Amusan Abi̇odun, A. Olugbenga, A. Kazeem, Gbotosho Grace Olusola
Objectives: The invasive nature of the current malaria diagnostic techniques impairs compliance to diagnosis, especially for on-field detection. Adapting non-invasive methods of biological sample collection for rapid diagnosis of malaria infections may provide a more efficient approach to case management and epidemiological studies of malaria. This study was designed to evaluate the detection of Plasmodium falciparum Histidine-rich Protein II (PfHRP-2) in urine samples and optimization as diagnostic markers for P. falciparum infection. Methods: One hundred (100) microscopically confirmed patients with Plasmodium falciparum infection and 25 P. falciparum negative controls were recruited for the study. Blood samples of all participants were tested for the presence of PfHRP-2 using Rapid Diagnostic Test (RDT) kits. In addition, urine samples of the confirmed malaria-infected patients were analyzed for PfHRP-2 using the CareStartTM and Global Devices (USA) Malaria kits. The diagnostic performances of the RDT kits were evaluated. Results: Overall, the two brands of malaria rapid diagnostics demonstrated 71% sensitivity (95%CI=62.1-79.9%) and 96% specificity (95%CI=88.3-103.7%) for PfHRP-2 detection in urine. The sensitivities of the tests in urine at asexual parasitemia ≤ 2000 μL-1 and asexual parasitemia > 2000 μL-1 were 69.6% (95%CI=56.3-82.9%) and 72.2% (95%CI=60.3-84.2%) respectively. Global Devices and CareStartTM kits had individual sensitivities of 80% (95%CI= 65.7-94.3%) and 67.1% (95%CI= 56.1-78.1%) respectively for PfHRP-2 detection in urine (P= 0.072). Conclusion: Findings revealed that urine-based RDTs have limited capacities for malaria diagnosis due to their low sensitivity and require more optimizations to meet required diagnostic standards. J Microbiol Infect Dis 2022; 12(3):97-107.
{"title":"Detection of Malaria Parasite Protein in Urine of Patients with Acute Uncomplicated Malaria Using Rapid Diagnostic Test Kits","authors":"Amusan Abi̇odun, A. Olugbenga, A. Kazeem, Gbotosho Grace Olusola","doi":"10.5799/jmid.1176524","DOIUrl":"https://doi.org/10.5799/jmid.1176524","url":null,"abstract":"Objectives: The invasive nature of the current malaria diagnostic techniques impairs compliance to diagnosis, especially for on-field detection. Adapting non-invasive methods of biological sample collection for rapid diagnosis of malaria infections may provide a more efficient approach to case management and epidemiological studies of malaria. This study was designed to evaluate the detection of Plasmodium falciparum Histidine-rich Protein II (PfHRP-2) in urine samples and optimization as diagnostic markers for P. falciparum infection. \u0000Methods: One hundred (100) microscopically confirmed patients with Plasmodium falciparum infection and 25 P. falciparum negative controls were recruited for the study. Blood samples of all participants were tested for the presence of PfHRP-2 using Rapid Diagnostic Test (RDT) kits. In addition, urine samples of the confirmed malaria-infected patients were analyzed for PfHRP-2 using the CareStartTM and Global Devices (USA) Malaria kits. The diagnostic performances of the RDT kits were evaluated. \u0000Results: Overall, the two brands of malaria rapid diagnostics demonstrated 71% sensitivity (95%CI=62.1-79.9%) and 96% specificity (95%CI=88.3-103.7%) for PfHRP-2 detection in urine. \u0000The sensitivities of the tests in urine at asexual parasitemia ≤ 2000 μL-1 and asexual parasitemia > 2000 μL-1 were 69.6% (95%CI=56.3-82.9%) and 72.2% (95%CI=60.3-84.2%) respectively. Global Devices and CareStartTM kits had individual sensitivities of 80% (95%CI= 65.7-94.3%) and 67.1% (95%CI= 56.1-78.1%) respectively for PfHRP-2 detection in urine (P= 0.072). \u0000Conclusion: Findings revealed that urine-based RDTs have limited capacities for malaria diagnosis due to their low sensitivity and require more optimizations to meet required diagnostic standards. J Microbiol Infect Dis 2022; 12(3):97-107.","PeriodicalId":16603,"journal":{"name":"Journal of Microbiology and Infectious Diseases","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83676729","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}
Here we present four clinical cases of immunocompromised patients experiencing bacteremia caused by Leptotrichia species in a few months with no common epidemiological link. Leptotrichia species are thin anaerobic gram-negative rods that inhabit multiple areas in the human body, including the oral microbiota. Many infections with Leptotrichia species occur in immunocompromised individuals classifying Leptotrichia species as opportunistic pathogens. Utilization of standard microbial identification methods of matrix-assisted laser-desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS) initially yielded the same identification for all four Leptotrichia isolates as Leptotrichia buccalis. However, 16S ribosomal RNA sequencing confirmed the identification of only one of the four isolates as L. buccalis, while two of the four isolates were identified as Leptotrichia trevisanii. These four cases highlight the clinical importance of considering opportunistic infection in immunocompromised patients with unusual organisms considered members of the normal oral flora. J Microbiol Infect Dis 2022; 12(3):130-135.
{"title":"Leptotrichia species Bacteremia in Hematological Malignancies","authors":"E. Hilt, P. Ferrieri","doi":"10.5799/jmid.1176551","DOIUrl":"https://doi.org/10.5799/jmid.1176551","url":null,"abstract":"Here we present four clinical cases of immunocompromised patients experiencing bacteremia caused by Leptotrichia species in a few months with no common epidemiological link. Leptotrichia species are thin anaerobic gram-negative rods that inhabit multiple areas in the human body, including the oral microbiota. Many infections with Leptotrichia species occur in immunocompromised individuals classifying Leptotrichia species as opportunistic pathogens. Utilization of standard microbial identification methods of matrix-assisted laser-desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS) initially yielded the same identification for all four Leptotrichia isolates as Leptotrichia buccalis. However, 16S ribosomal RNA sequencing confirmed the identification of only one of the four isolates as L. buccalis, while two of the four isolates were identified as Leptotrichia trevisanii. These four cases highlight the clinical importance of considering opportunistic infection in immunocompromised patients with unusual organisms considered members of the normal oral flora. J Microbiol Infect Dis 2022; 12(3):130-135.","PeriodicalId":16603,"journal":{"name":"Journal of Microbiology and Infectious Diseases","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89804254","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}
Actinomycosis is an infectious disease that rarely settles in the jaw. It is most commonly located in the cervicofacial, thoracic, abdominopelvic, and cerebral regions. Actinomycosis is mainly caused by Actinomyces israelii, a gram-positive facultative anaerobic bacterium. Surgical excision and antibiotic therapy are also required in the treatment approach. We present a rare case of surgical and medical treatment of Actinomycosis, which is rarely seen in the maxillary intraoral region. Actinomyces may be associated with a radicular cyst. The intraoral lesion of a 70-year-old diabetic female patient who applied to our clinic with long-term bleeding in the maxillary anterior region was surgically removed. The excised tissue was evaluated microscopically. Actinomyces associated with radicular cysts were seen. Short-term antibiotic therapy was then administered. An uneventful recovery was observed in the controls. J Microbiol Infect Dis 2022; 12(3):127-129.
{"title":"Actinomyces Associated with Radicular Cyst: Case Report","authors":"Şükrü Kolay, E. Mavi, Ömer Fahrettin Göze","doi":"10.5799/jmid.1176543","DOIUrl":"https://doi.org/10.5799/jmid.1176543","url":null,"abstract":"Actinomycosis is an infectious disease that rarely settles in the jaw. It is most commonly located in the cervicofacial, thoracic, abdominopelvic, and cerebral regions. Actinomycosis is mainly caused by Actinomyces israelii, a gram-positive facultative anaerobic bacterium. Surgical excision and antibiotic therapy are also required in the treatment approach. We present a rare case of surgical and medical treatment of Actinomycosis, which is rarely seen in the maxillary intraoral region. Actinomyces may be associated with a radicular cyst. The intraoral lesion of a 70-year-old diabetic female patient who applied to our clinic with long-term bleeding in the maxillary anterior region was surgically removed. The excised tissue was evaluated microscopically. Actinomyces associated with radicular cysts were seen. Short-term antibiotic therapy was then administered. An uneventful recovery was observed in the controls. J Microbiol Infect Dis 2022; 12(3):127-129.","PeriodicalId":16603,"journal":{"name":"Journal of Microbiology and Infectious Diseases","volume":"42 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77632919","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}
Nupur Gupta, M. Jais, P. Shrivastava, Aditi Sharma
Objectives: The objective of the current study was to compare the diagnostic methods of Oxacillin Disk Diffusion, Cefoxitin Disk Diffusion, Oxacillin Resistance Screening Agar Base, and CHROM Agar MRSA with the gold-standard method of Polymerase Chain Reaction for detection of Methicillin-resistant Staphylococcus aureus. Methods: Two hundred pus samples were included in the study from which Staphylococcus strains were evaluated. The isolates of Staphylococcus aureus were subjected to the Oxacillin Disk Diffusion test, Cefoxitin Disk Diffusion test, Oxacillin Resistance Screening Agar Base, and CHROM Agar MRSA to detect MRSA with PCR, the reference standard. The diagnostic techniques were compared to their sensitivity, specificity, positive predictive, and negative predictive values. Results: The sensitivity of the Cefoxitin Disk Diffusion test was 100%, followed by CHROM Agar MRSA at 96.7%, Oxacillin Disk Diffusion at 90%, and Oxacillin Resistance Screening Agar Base at 86.7%. Most specific was the Cefoxitin Disk Diffusion test (99.4%), followed by Oxacillin Resistance Screening Agar Base (98.8%), CHROM Agar MRSA (97.7%), and the least specific was the Oxacillin Disk Diffusion test (96.5%). Conclusion: The Cefoxitin Disk Diffusion test was the most sensitive and specific of all four methods, next to the Polymerase Chain Reaction. However, future multicentric studies are recommended to test this method across all prevalent centers of methicillin resistance. J Microbiol Infect Dis 2022; 12(3):116-126.
{"title":"Comparison of Different Phenotypic Methods of Detection of Methicillin-Resistant Staphylococcus aureus with Polymerase Chain Reaction","authors":"Nupur Gupta, M. Jais, P. Shrivastava, Aditi Sharma","doi":"10.5799/jmid.1176537","DOIUrl":"https://doi.org/10.5799/jmid.1176537","url":null,"abstract":"Objectives: The objective of the current study was to compare the diagnostic methods of Oxacillin Disk Diffusion, Cefoxitin Disk Diffusion, Oxacillin Resistance Screening Agar Base, and CHROM Agar MRSA with the gold-standard method of Polymerase Chain Reaction for detection of Methicillin-resistant Staphylococcus aureus. \u0000Methods: Two hundred pus samples were included in the study from which Staphylococcus strains were evaluated. The isolates of Staphylococcus aureus were subjected to the Oxacillin Disk Diffusion test, Cefoxitin Disk Diffusion test, Oxacillin Resistance Screening Agar Base, and CHROM Agar MRSA to detect MRSA with PCR, the reference standard. The diagnostic techniques were compared to their sensitivity, specificity, positive predictive, and negative predictive values. \u0000Results: The sensitivity of the Cefoxitin Disk Diffusion test was 100%, followed by CHROM Agar MRSA at 96.7%, Oxacillin Disk Diffusion at 90%, and Oxacillin Resistance Screening Agar Base at 86.7%. Most specific was the Cefoxitin Disk Diffusion test (99.4%), followed by Oxacillin Resistance Screening Agar Base (98.8%), CHROM Agar MRSA (97.7%), and the least specific was the Oxacillin Disk Diffusion test (96.5%). \u0000Conclusion: The Cefoxitin Disk Diffusion test was the most sensitive and specific of all four methods, next to the Polymerase Chain Reaction. However, future multicentric studies are recommended to test this method across all prevalent centers of methicillin resistance. J Microbiol Infect Dis 2022; 12(3):116-126.","PeriodicalId":16603,"journal":{"name":"Journal of Microbiology and Infectious Diseases","volume":"78 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89464358","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}
L. Pérez, Y. Tejero, M. Aguado, O. Valdés, M. Álvarez, Guelsys González, V. Kourí, M. Guzmán
ABSTRACT Objectives: The first confirmed cases of COVID-19 in Cuba were reported on March 11, 2020, followed by multiple introductions of infected travelers from Europe, America, and Asia. This work aimed to characterize the SARS-CoV-2 strains circulating in Cuba from March to September 2020 by partial nucleotide sequencing of the S and N genes. Methods: Between March and September 2020, 38 nasopharyngeal exudates from 38 SARS-CoV-2 patients were received at the National Reference Laboratory for Influenza and Respiratory Viruses at the Institute of Tropical Medicine “Pedro Kourí” (IPK). The Sanger sequencing method was used to amplify and sequence a 2539 bp fragment of the spike gene (from position 22020 to 24550) and a 370 bp of the nucleoprotein gene (from position 28340 to 28710). The GISAID database was used to identify the mutation profile of both fragments, and phylogenetic analysis was used to confirm the clades. In addition, clinical and epidemiological data from patients were gathered. Results: There were 34 and 25 sequences from S and N genes, respectively. In 21 of them, both genes (S and N) were available, whereas, in the remaining 13 and 4, only S or N sequences could be obtained. Based on the presence of the D614G mutation, 32 samples (84.2%) were classified as clade G of SARS CoV-2, and two were classified as Wuhan. No classification was possible in the remaining four (where only the N sequence was available). In one sample each, five different mutations were detected in clade G samples: L517F, L517X, N603T, A846V, and E281V. The 26 N sequences obtained were 100.0% identical to those circulated in most countries. The G30R mutation was detected in an infected patient in Cuba. Fourteen of the 38 patients studied were imported cases. The first three cases detected with COVID-19 in Cuba were clade G and originated in Italy. Ten individuals were asymptomatic, four presented severe forms of the disease (two fatal), and the remaining presented mild symptoms. No relationship was observed among the clades or the mutational profile with the clinical features, country of origin, and Cuban provinces. Conclusion: The early establishment of SARS-CoV-2 genetic surveillance in Cuba was helpful for tracking the epidemic. It demonstrated that the SARS-CoV-2 clade G was introduced initially and was the variant that circulated in the country during 2020, although the Wuhan strain was also detected. J Microbiol Infect Dis 2022; 12(3):77-88.
{"title":"Sequencing of S and N genes of SARS-CoV-2 strains circulating in Cuba during March- September 2020","authors":"L. Pérez, Y. Tejero, M. Aguado, O. Valdés, M. Álvarez, Guelsys González, V. Kourí, M. Guzmán","doi":"10.5799/jmid.1175386","DOIUrl":"https://doi.org/10.5799/jmid.1175386","url":null,"abstract":"ABSTRACT \u0000Objectives: The first confirmed cases of COVID-19 in Cuba were reported on March 11, 2020, followed by multiple introductions of infected travelers from Europe, America, and Asia. This work aimed to characterize the SARS-CoV-2 strains circulating in Cuba from March to September 2020 by partial nucleotide sequencing of the S and N genes. \u0000Methods: Between March and September 2020, 38 nasopharyngeal exudates from 38 SARS-CoV-2 patients were received at the National Reference Laboratory for Influenza and Respiratory Viruses at the Institute of Tropical Medicine “Pedro Kourí” (IPK). The Sanger sequencing method was used to amplify and sequence a 2539 bp fragment of the spike gene (from position 22020 to 24550) and a 370 bp of the nucleoprotein gene (from position 28340 to 28710). The GISAID database was used to identify the mutation profile of both fragments, and phylogenetic analysis was used to confirm the clades. In addition, clinical and epidemiological data from patients were gathered. \u0000Results: There were 34 and 25 sequences from S and N genes, respectively. In 21 of them, both genes (S and N) were available, whereas, in the remaining 13 and 4, only S or N sequences could be obtained. Based on the presence of the D614G mutation, 32 samples (84.2%) were classified as clade G of SARS CoV-2, and two were classified as Wuhan. No classification was possible in the remaining four (where only the N sequence was available). In one sample each, five different mutations were detected in clade G samples: L517F, L517X, N603T, A846V, and E281V. The 26 N sequences obtained were 100.0% identical to those circulated in most countries. \u0000The G30R mutation was detected in an infected patient in Cuba. Fourteen of the 38 patients studied were imported cases. The first three cases detected with COVID-19 in Cuba were clade G and originated in Italy. Ten individuals were asymptomatic, four presented severe forms of the disease (two fatal), and the remaining presented mild symptoms. No relationship was observed among the clades or the mutational profile with the clinical features, country of origin, and Cuban provinces. \u0000Conclusion: The early establishment of SARS-CoV-2 genetic surveillance in Cuba was helpful for tracking the epidemic. It demonstrated that the SARS-CoV-2 clade G was introduced initially and was the variant that circulated in the country during 2020, although the Wuhan strain was also detected. J Microbiol Infect Dis 2022; 12(3):77-88.","PeriodicalId":16603,"journal":{"name":"Journal of Microbiology and Infectious Diseases","volume":"117 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81221902","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}
D. Yalcin, S. Ignak, I. E. Uluisik, Olida Cecen, M. Sonkaya, Ozlem UNAY-DEMİREL
Objectives: The clinical course of COVID-19 ranges from mild to severe. The predictability of clinical outcomes gains importance in managing the disease. In this retrospective cohort study, we aimed to investigate the relationship between biomarker levels and the clinical severity of COVID-19. Methods: COVID-19 patients (n=618) admitted to a tertiary care hospital in Istanbul, Turkey were classified according to their clinical status using a scoring system designed by WHO. Laboratory parameters such as D-dimer, ferritin, and lymphocyte count levels were evaluated. In order to find out the relation between laboratory biomarkers and the severity of COVID-19, univariable and multivariable logistic regression analyses were used. Results: A positive correlation was found when WHO Score was compared with D-dimer levels (r=.508, p
{"title":"Evaluation of Biomarkers and Severity of COVID-19 in A Single Center","authors":"D. Yalcin, S. Ignak, I. E. Uluisik, Olida Cecen, M. Sonkaya, Ozlem UNAY-DEMİREL","doi":"10.5799/jmid.1175432","DOIUrl":"https://doi.org/10.5799/jmid.1175432","url":null,"abstract":"Objectives: The clinical course of COVID-19 ranges from mild to severe. The predictability of clinical outcomes gains importance in managing the disease. In this retrospective cohort study, we aimed to investigate the relationship between biomarker levels and the clinical severity of COVID-19. \u0000Methods: COVID-19 patients (n=618) admitted to a tertiary care hospital in Istanbul, Turkey were classified according to their clinical status using a scoring system designed by WHO. Laboratory parameters such as D-dimer, ferritin, and lymphocyte count levels were evaluated. In order to find out the relation between laboratory biomarkers and the severity of COVID-19, univariable and multivariable logistic regression analyses were used. \u0000Results: A positive correlation was found when WHO Score was compared with D-dimer levels (r=.508, p","PeriodicalId":16603,"journal":{"name":"Journal of Microbiology and Infectious Diseases","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90190028","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}
G. Nirmal, Guruprasad Chellappan Sojamani, M. Nair, S. Nath, Priyakumari Thankamony
We report here a 7-year girl with B-Acute Lymphoblastic Leukemia (ALL) on Berlin Frankfurt Munster (BFM) based induction chemotherapy who presented with fever, cough, and painful necrotic skin lesions simulating pseudomonas sepsis. The patient was eventually diagnosed with disseminated fusariosis. While on combination antifungal therapy, fever reappeared with pancytopenia and hepatosplenomegaly, and she was subsequently diagnosed with secondary Hemophagocytic lymphohistiocytosis (HLH) and was treated using the HLH 2004 protocol. The child responded to treatment well. This report highlights the high index of clinical suspicion, appropriate investigations needed to diagnose fusariosis and secondary HLH in pediatric oncology practice promptly, and the successful treatment outcome despite having them both.
{"title":"Disseminated Fusariosis with Secondary Hemophagocytic Lymphohistiocytosis","authors":"G. Nirmal, Guruprasad Chellappan Sojamani, M. Nair, S. Nath, Priyakumari Thankamony","doi":"10.5799/jmid.1130139","DOIUrl":"https://doi.org/10.5799/jmid.1130139","url":null,"abstract":"We report here a 7-year girl with B-Acute Lymphoblastic Leukemia (ALL) on Berlin Frankfurt Munster (BFM) based induction chemotherapy who presented with fever, cough, and painful necrotic skin lesions simulating pseudomonas sepsis. The patient was eventually diagnosed with disseminated fusariosis. While on combination antifungal therapy, fever reappeared with pancytopenia and hepatosplenomegaly, and she was subsequently diagnosed with secondary Hemophagocytic lymphohistiocytosis (HLH) and was treated using the HLH 2004 protocol. The child responded to treatment well. This report highlights the high index of clinical suspicion, appropriate investigations needed to diagnose fusariosis and secondary HLH in pediatric oncology practice promptly, and the successful treatment outcome despite having them both.","PeriodicalId":16603,"journal":{"name":"Journal of Microbiology and Infectious Diseases","volume":"60 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84121597","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}
Hossain Ferdaus Mohd Altaf, Sumaiya Farzana, K. Parvez, Z. Eman, Atif Muhammad, U. Nazim, Zinnah Ali, Khan IMDAD ULLAH, Rahman Masudur
Objectives: The study was aimed to evaluate the roles of Lactobacillus acidophilus supplementation in maintaining intestinal epithelial integrities, tight junction proteins, and adhesion molecules in non-specific diarrhea. Methods: In this study, we used the pre-weaned BL/6 pups (3 weeks of age, same litters) as a model animal. We supplied the non-sterilized and poor-quality water to experimental pups (n=7) to develop non-specific diarrheic symptoms. Then diarrheic pups were supplemented with Lactobacillus acidophilus (LA) for three consecutive weeks. The control group (n=5) was supplied with sterilized water and no LA. The sampling and analysis were performed on day 0, day 7, day 14, and day 21. The expressions of pro-inflammatory cytokines (IL-6, TNF-a) and tight junction proteins (TJPs) of gut mucosa were determined using qRT-PCR. And the serum cytokines level was screened through sandwich ELISA. Results: The intestinal cytoskeletal integrity becomes disrupted and characterized by lower ZO-1, Occludin, Claudin-1, Claudin-5, and JAM mRNA expressions upon real-time qRT-PCR. However, Claudin-4 was found to be not affected and illustrated with a higher expression like control pups. Interestingly, supplementing Lactobacillus acidophilus was found to maintain gut integrity and effectively reduce diarrheic symptoms. Like the control pups, the Lactobacillus acidophilus supplemented pups exhibited a higher expression of gut epithelial TJPs and adhesion molecules. Moreover, the diseased pups produced significantly increased IL-6, and TNF-α production in blood serum, compared to control BL/6 pups. Conclusion: We concluded that L. acidophilus supplementation might orchestrate the equilibrium of gut health and immunity against non-specific diarrhea.
{"title":"Lactobacillus acidophilus Supplementation Restores Gut Epithelial Integrities and Barrier Functions in Non-specific Diarrhea","authors":"Hossain Ferdaus Mohd Altaf, Sumaiya Farzana, K. Parvez, Z. Eman, Atif Muhammad, U. Nazim, Zinnah Ali, Khan IMDAD ULLAH, Rahman Masudur","doi":"10.5799/jmid.1130109","DOIUrl":"https://doi.org/10.5799/jmid.1130109","url":null,"abstract":"Objectives: The study was aimed to evaluate the roles of Lactobacillus acidophilus supplementation in maintaining intestinal epithelial integrities, tight junction proteins, and adhesion molecules in non-specific diarrhea. \u0000Methods: In this study, we used the pre-weaned BL/6 pups (3 weeks of age, same litters) as a model animal. We supplied the non-sterilized and poor-quality water to experimental pups (n=7) to develop non-specific diarrheic symptoms. Then diarrheic pups were supplemented with Lactobacillus acidophilus (LA) for three consecutive weeks. The control group (n=5) was supplied with sterilized water and no LA. The sampling and analysis were performed on day 0, day 7, day 14, and day 21. The expressions of pro-inflammatory cytokines (IL-6, TNF-a) and tight junction proteins (TJPs) of gut mucosa were determined using qRT-PCR. And the serum cytokines level was screened through sandwich ELISA. \u0000Results: The intestinal cytoskeletal integrity becomes disrupted and characterized by lower ZO-1, Occludin, Claudin-1, Claudin-5, and JAM mRNA expressions upon real-time qRT-PCR. However, Claudin-4 was found to be not affected and illustrated with a higher expression like control pups. Interestingly, supplementing Lactobacillus acidophilus was found to maintain gut integrity and effectively reduce diarrheic symptoms. Like the control pups, the Lactobacillus acidophilus supplemented pups exhibited a higher expression of gut epithelial TJPs and adhesion molecules. Moreover, the diseased pups produced significantly increased IL-6, and TNF-α production in blood serum, compared to control BL/6 pups. \u0000Conclusion: We concluded that L. acidophilus supplementation might orchestrate the equilibrium of gut health and immunity against non-specific diarrhea.","PeriodicalId":16603,"journal":{"name":"Journal of Microbiology and Infectious Diseases","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84394544","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}
S. Raza, Bimal Das, R. Chaudhry, V. Goyal, R. Lodha, S. Sood, H. Gautam, A. Kapil
Objectives: Community-acquired bacterial meningitis (CABM) is a life-threatening condition and remains a public health concern despite various efforts to prevent it. This study aimed to detect the bacteria causing CABM in children by Real-Time PCR. Methods: In total, 178 Cerebrospinal fluid (CSF) samples from suspected meningitis cases were collected and subjected to cell count, biochemical, microbiological, and molecular analysis. Bacteria grown on blood and chocolate agar were identified by matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS). DNA from CSF was extracted and used to detect bacteria by Real-Time PCR using TaqMan Probe. Results: Fifty (28.09%) patients were diagnosed with confirmed meningitis. Of them, 46 (25.84%) were Real-Time PCR, and four (2.25%) were culture and Real-Time PCR positive. Out of 50 bacteria detected, S. pneumoniae (n=35, 19.7%) was the leading causative bacteria and was followed by H. influenzae (seven, 3.93%), E. coli (five, 2.80%), S. agalactiae (two, 1.12%), and N. meningitidis (one, 0.56%). Most of the S. pneumoniae (18 isolates, 51.4%) were isolated from 3-24 months of children, and in neonates, E. coli was the predominant bacteria. When CSF culture was the gold standard for diagnosis, the sensitivity and specificity of Real-Time PCR for S. pneumoniae were 100% (95%CI: 15.81-100%) and 81.25% (95%CI: 74.69-86.73%), respectively. Conclusion: Streptococcus pneumoniae remains the leading organism of CABM in children despite vaccination and advancement in diagnosis. Real-time PCR has emerged as a vibrant diagnostic molecular appliance. Hence, Regular surveillance is crucial to curb the burdens and trends of CABM in children.
{"title":"Efficiency of Real-Time PCR in the Diagnosis of Community-Acquired Bacterial Meningitis in Children","authors":"S. Raza, Bimal Das, R. Chaudhry, V. Goyal, R. Lodha, S. Sood, H. Gautam, A. Kapil","doi":"10.5799/jmid.1130082","DOIUrl":"https://doi.org/10.5799/jmid.1130082","url":null,"abstract":"Objectives: Community-acquired bacterial meningitis (CABM) is a life-threatening condition and remains a public health concern despite various efforts to prevent it. This study aimed to detect the bacteria causing CABM in children by Real-Time PCR. \u0000Methods: In total, 178 Cerebrospinal fluid (CSF) samples from suspected meningitis cases were collected and subjected to cell count, biochemical, microbiological, and molecular analysis. Bacteria grown on blood and chocolate agar were identified by matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS). DNA from CSF was extracted and used to detect bacteria by Real-Time PCR using TaqMan Probe. \u0000Results: Fifty (28.09%) patients were diagnosed with confirmed meningitis. Of them, 46 (25.84%) were Real-Time PCR, and four (2.25%) were culture and Real-Time PCR positive. Out of 50 bacteria detected, S. pneumoniae (n=35, 19.7%) was the leading causative bacteria and was followed by H. influenzae (seven, 3.93%), E. coli (five, 2.80%), S. agalactiae (two, 1.12%), and N. meningitidis (one, 0.56%). Most of the S. pneumoniae (18 isolates, 51.4%) were isolated from 3-24 months of children, and in neonates, E. coli was the predominant bacteria. When CSF culture was the gold standard for diagnosis, the sensitivity and specificity of Real-Time PCR for S. pneumoniae were 100% (95%CI: 15.81-100%) and 81.25% (95%CI: 74.69-86.73%), respectively. \u0000Conclusion: Streptococcus pneumoniae remains the leading organism of CABM in children despite vaccination and advancement in diagnosis. Real-time PCR has emerged as a vibrant diagnostic molecular appliance. Hence, Regular surveillance is crucial to curb the burdens and trends of CABM in children.","PeriodicalId":16603,"journal":{"name":"Journal of Microbiology and Infectious Diseases","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89490250","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}
Objectives: Along with the COVID-19 pandemic, pregnant women have experienced COVID-19 symptoms of varying severity. Therefore, we aimed to show the clinical, laboratory, and radiological findings for three different trimesters in pregnant women diagnosed with COVID-19. Methods: All hospitalized pregnant women with positive SARS-CoV-2 nucleic acid tests were included in this study. The severity of the disease was classified using the NIH Classification of Severity of Disease. Results: None of the 206 participants were vaccinated. The number of asymptomatic or presymptomatic patients, those with mild, moderate, and severe disease, was 73(35.4%), 59(28.6%), 68 (33.1%), and 6 (2.9%), respectively. The gestational age of symptomatic patients was lower than that of asymptomatic patients (29 vs. 37 weeks) (p= 0.001). The incidence of pneumonia increased with the trimester of pregnancy increased (p
{"title":"Clinical Manifestation and Characteristics of COVID-19 in Pregnants: A Retrospective, Single-Center Study","authors":"Esmeray Mutlu Yılmaz, Eda Koksal, Gökhan Unver, Sercan Seri̇n","doi":"10.5799/jmid.1130058","DOIUrl":"https://doi.org/10.5799/jmid.1130058","url":null,"abstract":"Objectives: Along with the COVID-19 pandemic, pregnant women have experienced COVID-19 symptoms of varying severity. Therefore, we aimed to show the clinical, laboratory, and radiological findings for three different trimesters in pregnant women diagnosed with COVID-19. \u0000Methods: All hospitalized pregnant women with positive SARS-CoV-2 nucleic acid tests were included in this study. The severity of the disease was classified using the NIH Classification of Severity of Disease. \u0000Results: None of the 206 participants were vaccinated. The number of asymptomatic or presymptomatic patients, those with mild, moderate, and severe disease, was 73(35.4%), 59(28.6%), 68 (33.1%), and 6 (2.9%), respectively. The gestational age of symptomatic patients was lower than that of asymptomatic patients (29 vs. 37 weeks) (p= 0.001). The incidence of pneumonia increased with the trimester of pregnancy increased (p","PeriodicalId":16603,"journal":{"name":"Journal of Microbiology and Infectious Diseases","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74537357","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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