Pub Date : 2023-05-01DOI: 10.32598/ijt.17.2.1080.1
Ganiu Jimoh Akorede, Suleiman Folorunsho Ambali, Aisha Omobolanle Olatunji, A. Aremu, Akeem Olayiwola Ahmed, A. Basiru, Mistura Oyebisi Azeez, F. Sanusi, Rafiu Adebisi Kadir, Isiaku Abdulmajeed
Background: Drugs are the mainstay of the clinical management of epilepsy. Carbamazepine (CBZ) is commonly used for treating epilepsy and neuropathic pain. This drug has been reported to have toxic effects on the hematological system due to its induction of oxidative stress. This study aimed to investigate the protective effects of vitamin C against hematological and thyroid toxicities caused by the chronic use of carbamazepine in male Wistar rats. Methods: Thirty-two adult Wistar rats were categorized randomly into four groups of eight rats each and treated as follows: Group 1 received distilled water (2 mL/kg); group 2 was treated with vitamin C (100 mg/kg); group 3 received carbamazepine (20 mg/kg), and group 4 was pre-treated with vitamin C (100 mg/kg) and given carbamazepine (20 mg/kg) 30 min later. All treatments were administered via gavage once per day over fifteen consecutive weeks. The rats’ blood samples were tested for changes in hematological parameters while the sera were evaluated for liver biochemical enzymes and thyroid hormone levels. Results: The results revealed that pre-treatment with vitamin C protected against alterations in parameters associated with hematological and thyroid toxicities. Conclusion: Based on the study results, it was concluded that: a) The chronic use of CBZ caused hematological and thyroid toxicities, and b) Vitamin C protected against these toxicities. Therefore, it is highly likely that vitamin C has the potential to protect experimental animals against injuries induced by CBZ to the liver, blood cells, and hypothalamic-pituitary-thyroid axis in a Wistar rat model.
{"title":"Vitamin C Protects Against Blood and Thyroid Toxicities Induced by the Chronic Use of Carbamazepine in Rats","authors":"Ganiu Jimoh Akorede, Suleiman Folorunsho Ambali, Aisha Omobolanle Olatunji, A. Aremu, Akeem Olayiwola Ahmed, A. Basiru, Mistura Oyebisi Azeez, F. Sanusi, Rafiu Adebisi Kadir, Isiaku Abdulmajeed","doi":"10.32598/ijt.17.2.1080.1","DOIUrl":"https://doi.org/10.32598/ijt.17.2.1080.1","url":null,"abstract":"Background: Drugs are the mainstay of the clinical management of epilepsy. Carbamazepine (CBZ) is commonly used for treating epilepsy and neuropathic pain. This drug has been reported to have toxic effects on the hematological system due to its induction of oxidative stress. This study aimed to investigate the protective effects of vitamin C against hematological and thyroid toxicities caused by the chronic use of carbamazepine in male Wistar rats. Methods: Thirty-two adult Wistar rats were categorized randomly into four groups of eight rats each and treated as follows: Group 1 received distilled water (2 mL/kg); group 2 was treated with vitamin C (100 mg/kg); group 3 received carbamazepine (20 mg/kg), and group 4 was pre-treated with vitamin C (100 mg/kg) and given carbamazepine (20 mg/kg) 30 min later. All treatments were administered via gavage once per day over fifteen consecutive weeks. The rats’ blood samples were tested for changes in hematological parameters while the sera were evaluated for liver biochemical enzymes and thyroid hormone levels. Results: The results revealed that pre-treatment with vitamin C protected against alterations in parameters associated with hematological and thyroid toxicities. Conclusion: Based on the study results, it was concluded that: a) The chronic use of CBZ caused hematological and thyroid toxicities, and b) Vitamin C protected against these toxicities. Therefore, it is highly likely that vitamin C has the potential to protect experimental animals against injuries induced by CBZ to the liver, blood cells, and hypothalamic-pituitary-thyroid axis in a Wistar rat model.","PeriodicalId":14637,"journal":{"name":"Iranian Journal of Toxicology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48605756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Background: Isoproterenol, a β-adrenergic agonist, may induce myocardial infarction when used in high dosage in rats. This study was conducted to evaluate the effect of the ethanol extract of Kleinhovia hospita leaves on cardiac biomarkers and myocardial structures of rats induced by isoproterenol. Methods: Male rats (n=30) were assigned as a normal controls or treatment groups. The treatment groups received pretreatments, either placebo or the extract at doses of 250, 500, or 750 mg/kg for 14 days, followed by two isoproterenol injections at 100 mg/kg. After 24 hours, blood samples were taken and the hearts dissected. The tested cardiac biomarkers were creatinine kinase myocardial band (CKMB) and lactate dehydrogenase (LDH). Heart histopathology analysis was performed followed by staining of samples with hematoxylin and eosin. Results: The isoproterenol injections significantly increased CKMB and LDH levels in the placebo group compared to those in normal controls. Pretreatment with the extract at doses of 500 and 750 mg/kg significantly reduced the serum CKMB and LDH levels compared to those of the placebo. The histopathological examinations showed the presence of diffused necrosis and severe inflammation in the placebo group. Pretreatment with the extract at 500 or 750 mg/kg significantly reduced the myocardial tissue damages in rats. Conclusion: The K. hospita extract at doses of 500 or 750 mg/kg significantly reduced the infarctions in the rats’ heart tissue, shown by significantly low levels of CKMB and LDH, and reduced necrotic lesions and inflammation in the rat heart tissue samples induced by isoproterenol pretreatment.
{"title":"Kleinhovia Hospita Leaf Extract Protects the Heart Against Infarction by Isoproterenol","authors":"Fitriani W. Alani, Y. Djabir, M. Aryadi Arsyad","doi":"10.32598/ijt.17.2.854.4","DOIUrl":"https://doi.org/10.32598/ijt.17.2.854.4","url":null,"abstract":"Background: Isoproterenol, a β-adrenergic agonist, may induce myocardial infarction when used in high dosage in rats. This study was conducted to evaluate the effect of the ethanol extract of Kleinhovia hospita leaves on cardiac biomarkers and myocardial structures of rats induced by isoproterenol. Methods: Male rats (n=30) were assigned as a normal controls or treatment groups. The treatment groups received pretreatments, either placebo or the extract at doses of 250, 500, or 750 mg/kg for 14 days, followed by two isoproterenol injections at 100 mg/kg. After 24 hours, blood samples were taken and the hearts dissected. The tested cardiac biomarkers were creatinine kinase myocardial band (CKMB) and lactate dehydrogenase (LDH). Heart histopathology analysis was performed followed by staining of samples with hematoxylin and eosin. Results: The isoproterenol injections significantly increased CKMB and LDH levels in the placebo group compared to those in normal controls. Pretreatment with the extract at doses of 500 and 750 mg/kg significantly reduced the serum CKMB and LDH levels compared to those of the placebo. The histopathological examinations showed the presence of diffused necrosis and severe inflammation in the placebo group. Pretreatment with the extract at 500 or 750 mg/kg significantly reduced the myocardial tissue damages in rats. Conclusion: The K. hospita extract at doses of 500 or 750 mg/kg significantly reduced the infarctions in the rats’ heart tissue, shown by significantly low levels of CKMB and LDH, and reduced necrotic lesions and inflammation in the rat heart tissue samples induced by isoproterenol pretreatment.","PeriodicalId":14637,"journal":{"name":"Iranian Journal of Toxicology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49286543","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Background: Colitis is an inflammatory bowel disease, which is treated effectively with antioxidant and anti-inflammatory drugs. This study evaluated the anti-inflammatory effects of the extracts of Viola odorata and Cassia fistula on the acetic acid-induced colitis in rats. Methods: We determined the total contents of phenols, alkaloids, saponins, and tannins in the plants’ extracts. Further, we used 28 male Wistar rats in four groups of seven each. Colitis was induced in the experimental groups by the intra-rectal administration of 1% acetic acid. Distilled water was used in the sham group. After induction of colitis, the control group received distilled water, the sham group received normal saline, the standard group received 360 mg/kg oral sulfasalazine, and the experimental group received the combined extracts at 200 mg/kg orally. The severity of colitis was assessed in all animal groups. Results: The phytochemical assays showed that both extracts contained alkaloid and saponin. Also, the V. odorata extract contained tannin while C. fistula had anthraquinone. Acetic acid increased the thickness of the colonic epithelial layer and caused edema, cell necrosis, and increased myeloperoxidase enzyme in the colon tissues. The inflammation, colon weight per unit area, and macroscopic scores in the group treated with the combined extracts were reduced more than that in the standard group. The extracts reduced the activity in the experimental group. However, sulfasalazine resulted in a better healing of the colitis. Conclusion: The combined extracts at 200 mg/kg effectively reduced the colitis induced by acetic acid in the rats.
{"title":"Extracts of Viola odorata and Cassia fistula Protect Against Acetic Acid-induced Colitis","authors":"Rahele Zareshahi, Anoosheh Ahmadi, Zahra Ravaji, Mohsen Zabihi, Abolfazl Nasrollahi, Hamed Mahmoodian","doi":"10.32598/ijt.17.1.708.4","DOIUrl":"https://doi.org/10.32598/ijt.17.1.708.4","url":null,"abstract":"Background: Colitis is an inflammatory bowel disease, which is treated effectively with antioxidant and anti-inflammatory drugs. This study evaluated the anti-inflammatory effects of the extracts of Viola odorata and Cassia fistula on the acetic acid-induced colitis in rats. Methods: We determined the total contents of phenols, alkaloids, saponins, and tannins in the plants’ extracts. Further, we used 28 male Wistar rats in four groups of seven each. Colitis was induced in the experimental groups by the intra-rectal administration of 1% acetic acid. Distilled water was used in the sham group. After induction of colitis, the control group received distilled water, the sham group received normal saline, the standard group received 360 mg/kg oral sulfasalazine, and the experimental group received the combined extracts at 200 mg/kg orally. The severity of colitis was assessed in all animal groups. Results: The phytochemical assays showed that both extracts contained alkaloid and saponin. Also, the V. odorata extract contained tannin while C. fistula had anthraquinone. Acetic acid increased the thickness of the colonic epithelial layer and caused edema, cell necrosis, and increased myeloperoxidase enzyme in the colon tissues. The inflammation, colon weight per unit area, and macroscopic scores in the group treated with the combined extracts were reduced more than that in the standard group. The extracts reduced the activity in the experimental group. However, sulfasalazine resulted in a better healing of the colitis. Conclusion: The combined extracts at 200 mg/kg effectively reduced the colitis induced by acetic acid in the rats.","PeriodicalId":14637,"journal":{"name":"Iranian Journal of Toxicology","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135686616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.32598/ijt.17.1.1018.1
Ghafarali Mahmoudi, Mohammad Hojat Bazrafkan, Golnaz Mahmoudvand, Peiman Astaraki, Soudabeh Zare, Arian Karimi Rouzbahani
Background: Mushroom poisoning is a major health condition with a wide range of clinical and paraclinical features. This study aimed at evaluating the frequency of clinical and paraclinical manifestations of mushroom poisoning in patients referred to Shahid Rahimi Hospital in Khorramabad, Iran, over a one-year period (2018-2019). Methods: The data collected were associated with the clinical manifestations, age, sex, seasons, type of mushrooms, patients’ residence, latent phase, clinical and laboratory findings, length of hospital stay, interventions and the treatments. The underlying diseases were also recorded. After data collection, they were entered into SPSS software, version 18 and analyzed statistically. Results: 124 patients with a mean age of 36.65 years old were recruited into the study, 73 of whom were male and 51 female. The mean duration of the hospital stay was 2.19 days. The mean time elapsed between the consumption and the symptoms development was 4.42 hours. Similarly, the duration between the consumption and referral to the hospital was 4.72 hours. Most cases occurred in the spring (91.1%). The most common clinical signs in the poisoned subjects were nausea and vomiting (81.5%). The most therapeutic medications were Livergol (48.4%) and Atropin (33.1%), and most subjects had consumed mushrooms grown in the nature (79.8%). One person died because of the poisoning (0.8%). Conclusion: A large majority of the patients developed nausea and vomiting, whom were treated with drugs, but one patient died. People should be aware of, warned againt, and educated about the types of mushrooms before consumption.
{"title":"Evaluation of Clinical and Paraclinical Manifestations of Mushroom Poisoning: A Cross-sectional Study","authors":"Ghafarali Mahmoudi, Mohammad Hojat Bazrafkan, Golnaz Mahmoudvand, Peiman Astaraki, Soudabeh Zare, Arian Karimi Rouzbahani","doi":"10.32598/ijt.17.1.1018.1","DOIUrl":"https://doi.org/10.32598/ijt.17.1.1018.1","url":null,"abstract":"Background: Mushroom poisoning is a major health condition with a wide range of clinical and paraclinical features. This study aimed at evaluating the frequency of clinical and paraclinical manifestations of mushroom poisoning in patients referred to Shahid Rahimi Hospital in Khorramabad, Iran, over a one-year period (2018-2019). Methods: The data collected were associated with the clinical manifestations, age, sex, seasons, type of mushrooms, patients’ residence, latent phase, clinical and laboratory findings, length of hospital stay, interventions and the treatments. The underlying diseases were also recorded. After data collection, they were entered into SPSS software, version 18 and analyzed statistically. Results: 124 patients with a mean age of 36.65 years old were recruited into the study, 73 of whom were male and 51 female. The mean duration of the hospital stay was 2.19 days. The mean time elapsed between the consumption and the symptoms development was 4.42 hours. Similarly, the duration between the consumption and referral to the hospital was 4.72 hours. Most cases occurred in the spring (91.1%). The most common clinical signs in the poisoned subjects were nausea and vomiting (81.5%). The most therapeutic medications were Livergol (48.4%) and Atropin (33.1%), and most subjects had consumed mushrooms grown in the nature (79.8%). One person died because of the poisoning (0.8%). Conclusion: A large majority of the patients developed nausea and vomiting, whom were treated with drugs, but one patient died. People should be aware of, warned againt, and educated about the types of mushrooms before consumption.","PeriodicalId":14637,"journal":{"name":"Iranian Journal of Toxicology","volume":"146 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135686615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Carlos Montalvo Romero, C. A. Ucán, Angel Sosa Peralta, Jesus Tagle Reyes, Y. López, A. V. Córdova Quiroz, Alejandro Ruíz Marín
Background: Metal pollution is a problem in many parts of the world. These metals can be harmful when they exceed the recommended limits. By analyzing metal concentrations in living organisms, it is possible to deduce the bioavailability and the level of environmental contamination for specific metals in an ecosystem. The aim of this study was to determine the heavy metals copper, cadmium, lead, nickel and mercury in edible tissues of fish, to establish the risk analysis for human health. There are currently no studies in this area indicating these factors. Methods: The edible tissue samples were treated under the techniques of the official mexican standards (NOM-117-SSA1) and analyzed using atomic absorption spectroscopy (flame and graphite). The heavy metal concentrations were used to calculate the estimated daily intakes, target hazard quotients, hazard indices, and target cancer risks for children and adults. Results: The highest concentrations of copper (138.82 μg/g), cadmium (1.28 μg/g) and lead (3.20 μg/g) in the edible tissue samples exceeded the permissible limits considered in this study while nickel and mercury levels did not. The target hazard quotient indices for copper, cadmium and nickel in specific sites were higher than the United States Environmental Protection Agency (US-EPA) criteria (>1), while the values for mercury and lead were below one. The hazard indices were higher than the US-EPA criteria (>1) in more than 50% of the sites analyzed. Conclusion: This study is an alert, indicating that inhabitants who consume the fish, particularly children, are at risk of cadmium, lead and nickel toxicity.
{"title":"Health Risk Assessment of Heavy Metals: Cu, Cd, Pb, Ni and Hg, in Catfish Ariopsis felis in Southern Mexico","authors":"Carlos Montalvo Romero, C. A. Ucán, Angel Sosa Peralta, Jesus Tagle Reyes, Y. López, A. V. Córdova Quiroz, Alejandro Ruíz Marín","doi":"10.32598/ijt.16.3.878.1","DOIUrl":"https://doi.org/10.32598/ijt.16.3.878.1","url":null,"abstract":"Background: Metal pollution is a problem in many parts of the world. These metals can be harmful when they exceed the recommended limits. By analyzing metal concentrations in living organisms, it is possible to deduce the bioavailability and the level of environmental contamination for specific metals in an ecosystem. The aim of this study was to determine the heavy metals copper, cadmium, lead, nickel and mercury in edible tissues of fish, to establish the risk analysis for human health. There are currently no studies in this area indicating these factors. Methods: The edible tissue samples were treated under the techniques of the official mexican standards (NOM-117-SSA1) and analyzed using atomic absorption spectroscopy (flame and graphite). The heavy metal concentrations were used to calculate the estimated daily intakes, target hazard quotients, hazard indices, and target cancer risks for children and adults. Results: The highest concentrations of copper (138.82 μg/g), cadmium (1.28 μg/g) and lead (3.20 μg/g) in the edible tissue samples exceeded the permissible limits considered in this study while nickel and mercury levels did not. The target hazard quotient indices for copper, cadmium and nickel in specific sites were higher than the United States Environmental Protection Agency (US-EPA) criteria (>1), while the values for mercury and lead were below one. The hazard indices were higher than the US-EPA criteria (>1) in more than 50% of the sites analyzed. Conclusion: This study is an alert, indicating that inhabitants who consume the fish, particularly children, are at risk of cadmium, lead and nickel toxicity.","PeriodicalId":14637,"journal":{"name":"Iranian Journal of Toxicology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47290757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zohreh Hesari, Khatereh Kafshdoozan, P. Kokhaei, B. Bagheri, Sahar Ghaffari Khaligh
Background: Heart Failure (HF) has become one of the most prevalent cardiovascular problems worldwide. Considering the beneficial effects of probiotics on human health, we aimed to investigate the anti-inflammatory effect of oral administration of Lactobacillus paracasei in HF induced by isoproterenol. Methods: Forty Wistar male rats weighing 80g on average were randomly assigned to five groups of eight each: control, probiotic, HF model, prophylaxis including probiotic + HF, and treatment (HF + probiotic). The rats were treated and examined over 30 days. Heart failure was induced by the subcutaneous injection of isoproterenol (5 mg/kg) once daily for 10 days. At the completion of the study, the ratios of Body, Heart, and Left Ventricle Weights (BW, HW & LVW), serum TNF-α levels, measured by ELISA, myocardial histopathological lesions were determined and compared among the groups. Cardiac hypertrophy was defined by comparing the LVW to total body weight for each animal. Results: The LVW and LVW/HW ratio were significantly increased in the rats with HF (P<0.05). In the treatment group, the LVW/HW and serum TNF-α level were lower compared to those in the HF group. Also, the infiltration of inflammatory cells, necrosis, and myocardial hypertrophy were remarkably lower than those in the HF group. Conclusion: The study findings indicate that the oral administration of Lactobacillus paracasei subsp. paracasei-8700:2 can reduce the cardiac hypertrophy, failure and inflammation induced by the administration of isoproterenol in rats. Therefore, the study results suggest a novel approach for the management and potential prevention of heart failure.
{"title":"Lactobacillus paracasei Has Anti-Inflammatory Effect on the Heart Failure Induced by Isoproterenol in Rats","authors":"Zohreh Hesari, Khatereh Kafshdoozan, P. Kokhaei, B. Bagheri, Sahar Ghaffari Khaligh","doi":"10.32598/ijt.16.3.922.1","DOIUrl":"https://doi.org/10.32598/ijt.16.3.922.1","url":null,"abstract":"Background: Heart Failure (HF) has become one of the most prevalent cardiovascular problems worldwide. Considering the beneficial effects of probiotics on human health, we aimed to investigate the anti-inflammatory effect of oral administration of Lactobacillus paracasei in HF induced by isoproterenol. Methods: Forty Wistar male rats weighing 80g on average were randomly assigned to five groups of eight each: control, probiotic, HF model, prophylaxis including probiotic + HF, and treatment (HF + probiotic). The rats were treated and examined over 30 days. Heart failure was induced by the subcutaneous injection of isoproterenol (5 mg/kg) once daily for 10 days. At the completion of the study, the ratios of Body, Heart, and Left Ventricle Weights (BW, HW & LVW), serum TNF-α levels, measured by ELISA, myocardial histopathological lesions were determined and compared among the groups. Cardiac hypertrophy was defined by comparing the LVW to total body weight for each animal. Results: The LVW and LVW/HW ratio were significantly increased in the rats with HF (P<0.05). In the treatment group, the LVW/HW and serum TNF-α level were lower compared to those in the HF group. Also, the infiltration of inflammatory cells, necrosis, and myocardial hypertrophy were remarkably lower than those in the HF group. Conclusion: The study findings indicate that the oral administration of Lactobacillus paracasei subsp. paracasei-8700:2 can reduce the cardiac hypertrophy, failure and inflammation induced by the administration of isoproterenol in rats. Therefore, the study results suggest a novel approach for the management and potential prevention of heart failure.","PeriodicalId":14637,"journal":{"name":"Iranian Journal of Toxicology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44440227","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mitra Rahimi, G. Mahmoudi, S. Shadnia, N. Zamani, Rebecca McDonald, H. Hassanian‐Moghaddam, Peyman Erfantalab Evini
Background: Tracheal intubation is a life-saving measure in patients poisoned acutely with opioid, and when naloxone treatment is inadequate. This study determined the risk factors for early unplanned extubation in these patients and evaluated the effects on the clinical outcomes. Methods: At a poisoning center in Tehran, Iran, 165 opioid overdose patients who were admitted to the intensive care unit and intubated between September 2019 and March 2020 were enrolled into this study. Patients were categorized in two groups: a) those extubated based on the physicians’ decision, and b) those who were extubated by self or were accidentally. The two groups were compared regarding their clinical outcomes and complications during hospitalization. In addition, the re-intubated patients in both groups were compared to those with successful intubation regarding the predisposing factors and mortality. Results: Of these patients, 36 (21.8%) died before extubation, and planned extubation was performed in 109 of them (84.5%). Unplanned extubation occurred in 20 patients (15.5%). Agitation, elevated temperature (>38.5ºC), and insufficient nursing care were the independent risk factors for the unplanned extubation. 6(5.5%) and 3(15%) patients died following the planned and unplanned extubation, respectively, and 24 patients required reintubation. Patient transfer, succinylcholine use, aspiration pneumonia, presence of brain injury, and insufficient nursing care were independent risk factors for re-intubation. Conclusion: Among the patients with high drug dependency, higher doses of sedatives were needed to avoid self-extubation. Infection control and sufficient nursing care were factors that led to better clinical outcomes for extubation in these patients.
{"title":"Planned Versus Unplanned Extubation in Opioid Overdose Patients: Does it Have any Effect on the Prognosis? A Cohort Study","authors":"Mitra Rahimi, G. Mahmoudi, S. Shadnia, N. Zamani, Rebecca McDonald, H. Hassanian‐Moghaddam, Peyman Erfantalab Evini","doi":"10.32598/ijt.16.3.917.1","DOIUrl":"https://doi.org/10.32598/ijt.16.3.917.1","url":null,"abstract":"Background: Tracheal intubation is a life-saving measure in patients poisoned acutely with opioid, and when naloxone treatment is inadequate. This study determined the risk factors for early unplanned extubation in these patients and evaluated the effects on the clinical outcomes. Methods: At a poisoning center in Tehran, Iran, 165 opioid overdose patients who were admitted to the intensive care unit and intubated between September 2019 and March 2020 were enrolled into this study. Patients were categorized in two groups: a) those extubated based on the physicians’ decision, and b) those who were extubated by self or were accidentally. The two groups were compared regarding their clinical outcomes and complications during hospitalization. In addition, the re-intubated patients in both groups were compared to those with successful intubation regarding the predisposing factors and mortality. Results: Of these patients, 36 (21.8%) died before extubation, and planned extubation was performed in 109 of them (84.5%). Unplanned extubation occurred in 20 patients (15.5%). Agitation, elevated temperature (>38.5ºC), and insufficient nursing care were the independent risk factors for the unplanned extubation. 6(5.5%) and 3(15%) patients died following the planned and unplanned extubation, respectively, and 24 patients required reintubation. Patient transfer, succinylcholine use, aspiration pneumonia, presence of brain injury, and insufficient nursing care were independent risk factors for re-intubation. Conclusion: Among the patients with high drug dependency, higher doses of sedatives were needed to avoid self-extubation. Infection control and sufficient nursing care were factors that led to better clinical outcomes for extubation in these patients.","PeriodicalId":14637,"journal":{"name":"Iranian Journal of Toxicology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45913345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Niloufar Sinaei, E. Jafari, A. Najafi, S. Karami-Mohajeri
Background: Environmental pollutants including organophosphate insecticides impair glucose metabolism by altering hepatic oxidation and play an important role in the development of diabetes and its complications. The aim of this study was to assess the impacts of repeated oral doses of Diazinon, an organophosphate insecticide, which is known to impair the glucose metabolism and its tolerance through oxidative stress in the rat liver. Methods: Diabetes was induced in rats by a single dose of freshly prepared Streptozotocin at 60 mg/kg. Both normal and diabetic rats were exposed to daily oral Diazinon at 20 mg/kg for 21 days. Subsequently, the effects on the rats’ liver were assessed by glucose tolerance test, histopathology examinations and antioxidant capacity measurement. Results: The glucose tolerance tests showed impairment in the non-diabetic rats exposed to Diazinon, while the difference in glucose tolerance between the diabetic rats treated with or without Diazinon was not significant. Diazinon in diabetic rats caused greater histopathological changes along with significant elevations in the lipid peroxidation and antioxidant enzymes, including superoxide dismutase and catalase in the liver tissue. Conclusion: Subacute exposure to Diazinon exacerbated hepatotoxicity by inducing oxidative stress in diabetic rats. The superoxide dismutase and catalase activities increased due to the oxidative damages in rats’ liver caused by Diazinon.
{"title":"Hepatic Oxidative Damages and Glucose Tolerance in Diabetic Rats Exposed to Repeated Oral Doses of Diazinon","authors":"Niloufar Sinaei, E. Jafari, A. Najafi, S. Karami-Mohajeri","doi":"10.32598/ijt.16.3.950.1","DOIUrl":"https://doi.org/10.32598/ijt.16.3.950.1","url":null,"abstract":"Background: Environmental pollutants including organophosphate insecticides impair glucose metabolism by altering hepatic oxidation and play an important role in the development of diabetes and its complications. The aim of this study was to assess the impacts of repeated oral doses of Diazinon, an organophosphate insecticide, which is known to impair the glucose metabolism and its tolerance through oxidative stress in the rat liver. Methods: Diabetes was induced in rats by a single dose of freshly prepared Streptozotocin at 60 mg/kg. Both normal and diabetic rats were exposed to daily oral Diazinon at 20 mg/kg for 21 days. Subsequently, the effects on the rats’ liver were assessed by glucose tolerance test, histopathology examinations and antioxidant capacity measurement. Results: The glucose tolerance tests showed impairment in the non-diabetic rats exposed to Diazinon, while the difference in glucose tolerance between the diabetic rats treated with or without Diazinon was not significant. Diazinon in diabetic rats caused greater histopathological changes along with significant elevations in the lipid peroxidation and antioxidant enzymes, including superoxide dismutase and catalase in the liver tissue. Conclusion: Subacute exposure to Diazinon exacerbated hepatotoxicity by inducing oxidative stress in diabetic rats. The superoxide dismutase and catalase activities increased due to the oxidative damages in rats’ liver caused by Diazinon.","PeriodicalId":14637,"journal":{"name":"Iranian Journal of Toxicology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48329918","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Background: Monosodium Glutamate (MSG), used widely in the food industry, is a threat to the public health. We investigated whether the MSG administration depletes non-enzymatic antioxidants, i.e., vitamins C and E in the liver of Wistar albino rats. We also examined the restorative effect of the ethanolic extract of Phyllanthus emblica (P. emblica). Methods: Wistar albino rats (n=42) were adapted and then randomly divided into seven groups of: 1) control, 2, 3, 4) MSG treatment, and 5, 6, 7) combined MSG and P. emblica extract treatment. All rat groups were treated daily for 120 days. They were orally administered either MSG alone or MSG plus the extract combined. The rats were then sacrificed and the liver was harvested from each group, and homogenized to examine the levels of vitamins C and E in the liver, using RP-HPLC method. Results: The vitamins C and E levels significantly declined (P<0.05) in the liver of MSG treated groups compared to those of the control rats. The combined treatment (extract + MSG) at low and moderate doses restored the vitamin C levels but it restored vitamin E only at the low dose (P<0.05). Conclusion: This study clearly demonstrated the deterioration of non-enzymatic antioxidants, i.e., vitamins C and E in the rats’ liver after chronic exposure to MSG. The findings support the toxic effect and oxidative stress due to MSG exposure to the liver and the beneficial effect of the extract of P. emblica that inhibits the MSG’s harmful effect on the liver.
{"title":"Phyllanthus Emblica Extract Protects the Rat Liver Cells Against the Toxicity of Monosodium Glutamate: Experimental Evidence","authors":"Surendra Babu Thangachi, Varsha Sriram Mokhasi, Y. Sathyamoorthy, Venkata Bharat Kumar Pinnelli, Sreekanth Chiruthanur","doi":"10.32598/ijt.16.3.923.1","DOIUrl":"https://doi.org/10.32598/ijt.16.3.923.1","url":null,"abstract":"Background: Monosodium Glutamate (MSG), used widely in the food industry, is a threat to the public health. We investigated whether the MSG administration depletes non-enzymatic antioxidants, i.e., vitamins C and E in the liver of Wistar albino rats. We also examined the restorative effect of the ethanolic extract of Phyllanthus emblica (P. emblica). Methods: Wistar albino rats (n=42) were adapted and then randomly divided into seven groups of: 1) control, 2, 3, 4) MSG treatment, and 5, 6, 7) combined MSG and P. emblica extract treatment. All rat groups were treated daily for 120 days. They were orally administered either MSG alone or MSG plus the extract combined. The rats were then sacrificed and the liver was harvested from each group, and homogenized to examine the levels of vitamins C and E in the liver, using RP-HPLC method. Results: The vitamins C and E levels significantly declined (P<0.05) in the liver of MSG treated groups compared to those of the control rats. The combined treatment (extract + MSG) at low and moderate doses restored the vitamin C levels but it restored vitamin E only at the low dose (P<0.05). Conclusion: This study clearly demonstrated the deterioration of non-enzymatic antioxidants, i.e., vitamins C and E in the rats’ liver after chronic exposure to MSG. The findings support the toxic effect and oxidative stress due to MSG exposure to the liver and the beneficial effect of the extract of P. emblica that inhibits the MSG’s harmful effect on the liver.","PeriodicalId":14637,"journal":{"name":"Iranian Journal of Toxicology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49342457","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Background: Glutamate is essential to learning and memory as an excitatory neurotransmitter. This study evaluated the atrazine effect on the hippocampus and examined the mitigative role of avocado oil against the neuronal degeneration and behavioral deficits in Wistar rats. Methods: Fifty adult male Wistar rats were divided into four groups of ten. Group 1 (controls) received 0.5 ml distilled water; group 2 received atrazine (215 mg/kg/d); group 3 received avocado oil (1 ml/ 250 g/d); group 4 received avocado oil (1 ml/ 250 g/d) 60 minutes before atrazine. Treatments were given by oral gavage over 28 days. Barnes maze and Y-maze tests were performed to assess the learning and memory. Histological and Glial Fibrillary Acidic Protein (GFAP)-immuno-reaction in the hippocampus were assessed, using Hematoxylin and Eosin (H&E) stain and anti-GFAP antibody. The glutamate and acetylcholinesterase levels were subsequently assessed. Results: The learning and memory performance was significantly affected in group 2, but improved in group 4. In group 3, learning and memory performance was not different from group 1. In group 2, atrazine caused massive neurodegeneration and astrogliosis at Cornu Ammonis-1 (CA-1) and Dentate Gyrus (DG). Combined avocado and atrazine significantly reduced neuronal death and astrogliosis in CA-1 and DG areas. In group 2, glutamate level was high while acetylcholinesterase was low. In group 4, glutamate was low but acetylcholinesterase was high compared to those in group 2. Glutamate and acetylcholinesterase levels in group 3 was not significantly different from that of group 1. Conclusion: Atrazine inhibited acetylcholinesterase and induced glutamate release. These were associated with excitotoxicity and neuronal degeneration in CA-1 and DG areas as shown by poor learning and memory. Treatment with avocado oil protected against high glutamate release, thus, mitigating neuronal degeneration and maintaining normal learning and memory in rats.
{"title":"Atrazine-Induced Hippocampal Degeneration and Behavioral Deficits in Wistar Rats: Mitigative Role of Avocado Oil","authors":"Nathaniel Ohiemi Amedu, Michael Olim Obu","doi":"10.32598/ijt.16.3.949.2","DOIUrl":"https://doi.org/10.32598/ijt.16.3.949.2","url":null,"abstract":"Background: Glutamate is essential to learning and memory as an excitatory neurotransmitter. This study evaluated the atrazine effect on the hippocampus and examined the mitigative role of avocado oil against the neuronal degeneration and behavioral deficits in Wistar rats. Methods: Fifty adult male Wistar rats were divided into four groups of ten. Group 1 (controls) received 0.5 ml distilled water; group 2 received atrazine (215 mg/kg/d); group 3 received avocado oil (1 ml/ 250 g/d); group 4 received avocado oil (1 ml/ 250 g/d) 60 minutes before atrazine. Treatments were given by oral gavage over 28 days. Barnes maze and Y-maze tests were performed to assess the learning and memory. Histological and Glial Fibrillary Acidic Protein (GFAP)-immuno-reaction in the hippocampus were assessed, using Hematoxylin and Eosin (H&E) stain and anti-GFAP antibody. The glutamate and acetylcholinesterase levels were subsequently assessed. Results: The learning and memory performance was significantly affected in group 2, but improved in group 4. In group 3, learning and memory performance was not different from group 1. In group 2, atrazine caused massive neurodegeneration and astrogliosis at Cornu Ammonis-1 (CA-1) and Dentate Gyrus (DG). Combined avocado and atrazine significantly reduced neuronal death and astrogliosis in CA-1 and DG areas. In group 2, glutamate level was high while acetylcholinesterase was low. In group 4, glutamate was low but acetylcholinesterase was high compared to those in group 2. Glutamate and acetylcholinesterase levels in group 3 was not significantly different from that of group 1. Conclusion: Atrazine inhibited acetylcholinesterase and induced glutamate release. These were associated with excitotoxicity and neuronal degeneration in CA-1 and DG areas as shown by poor learning and memory. Treatment with avocado oil protected against high glutamate release, thus, mitigating neuronal degeneration and maintaining normal learning and memory in rats.","PeriodicalId":14637,"journal":{"name":"Iranian Journal of Toxicology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43117445","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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