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Preventive Effects of Traditional Plant Concoction “Combo” on the Cyclophosphamide-Induced Ovarian Toxicity in Wistar Rats 传统植物复方“复方”对环磷酰胺致Wistar大鼠卵巢毒性的预防作用
Pub Date : 2023-05-06 DOI: 10.9734/ajrimps/2023/v12i2213
D. Okoroafor, Joshua Charles Isirima
Exposure to chemotherapeutic agents like cyclophosphamide (a drug for cancer treatment), leads to infertility due to its toxic effect on the ovaries.  Combo, “a commonly used plant concoction in traditional medicine for the treatment of infertility” is composed of Clove (dried flower), garlic (bulb), ginger (rhizome), and turmeric (rhizome). The aim of this study was to evaluate the possible prophylactic effects of Combo therapy in cyclophosphamide-induced ovarian toxicity in female Wistar rats. Female Wistar rats were divided into 6 groups (A-F) of 6 animals each. Group A (normal control) received distilled water only. Group B (negative control) received 200mg/kg of cyclophosphamide only, while group C (positive control) received only 29mg/kg of Combo. On the other hand, groups D, E and F were pretreated with Combo doses of (15, 29, and 290 mg/kg) and were later treated with 200mg/kg of cyclophosphamide after 7 days. All administrations were done orally. The reproductive hormones assayed were oestrogen and progesterone, while the oxidative stress biomarkers evaluated include glutathione, malondialdehyde, and nitric oxide. Their levels were used as diagnostic markers for assessing the reproductive functions of the ovaries. Combo pre-treatment significantly (p<0.05) decreased the levels of malondialdehyde and nitric oxide, and significantly (p<0.05) increased glutathione, oestrogen and progesterone levels when compared with cyclophosphamide group. Histopathological investigation showed that Combo mitigated degenerative cells in follicles, stromal oedema, and atresia of the follicles when compared with cyclophosphamide group. In conclusion, Combo has fertility potentials and can protect against ovarian degeneration in cyclophosphamide-induced toxicity.
暴露于化疗药物,如环磷酰胺(一种治疗癌症的药物),由于其对卵巢的毒性作用而导致不孕。复方是“传统医学中治疗不孕症的常用植物混合物”,由丁香(干花)、大蒜(球茎)、姜(根茎)和姜黄(根茎)组成。本研究的目的是评估联合治疗对环磷酰胺诱导的雌性Wistar大鼠卵巢毒性的可能预防作用。雌性Wistar大鼠分为6组(A-F),每组6只。A组(正常对照组)仅饮用蒸馏水。B组(阴性对照)仅给予200mg/kg环磷酰胺,C组(阳性对照)仅给予29mg/kg Combo。D、E、F组分别给予15、29、290 mg/kg的组合剂量预处理,7 D后给予200mg/kg环磷酰胺。所有给药均为口服。检测的生殖激素是雌激素和黄体酮,而氧化应激生物标志物评估包括谷胱甘肽、丙二醛和一氧化氮。它们的水平被用作评估卵巢生殖功能的诊断标记。与环磷酰胺组相比,联合预处理显著(p<0.05)降低了丙二醛和一氧化氮水平,显著(p<0.05)提高了谷胱甘肽、雌激素和孕酮水平。组织病理学调查显示,与环磷酰胺组相比,复方可减轻卵泡退行性细胞、间质水肿和卵泡闭锁。综上所述,Combo具有生育潜力,对环磷酰胺毒性卵巢变性具有保护作用。
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引用次数: 0
Depression and Alcohol Use Disorder Co-Morbidity among Undergraduate Students in University of Port Harcourt, Nigeria 尼日利亚哈科特港大学大学生抑郁和酒精使用障碍共发病
Pub Date : 2023-04-30 DOI: 10.9734/ajrimps/2023/v12i2212
C. Okeafor, R. Obi, I. Ojule
Background: Vulnerable developmental stage is encountered by university undergraduate students, where substantial changes happen in their body, brain, environment and socialization. This may result to increased vulnerability to develop addiction, alcohol use disorder and mental health disorders. Alcohol use disorderand Depression both pose problems in public health. Objectives: To determine the prevalence and the socio-demographic correlates of alcohol use disorder and depression co-morbidity among undergraduate. Methods: A cross-sectional study was conducted in the Lulu Briggs Health Centre of the University of Port Harcourt. Systematic sampling technique was used to recruit 420 respondents.Validated tools of Alcohol Use disorder Identification Inventory (AUDIT) and Patient Health Questionnaire (PHQ-9)were used to obtain information on depression and alcohol use disorder respectively from each of the respondent. Results: The mean age of the respondents was 23.59 (±5.2) years. A total of128 (30.5%) had alcohol use disorder, 205 (48.8%) had depression, and 22.4% (n=94) had co-morbid depression and alcohol use disorder. There was no significant relationship between socio-demographic findings and co-morbidity of depression and alcohol use disorder. Conclusion: About 2 in10 undergraduates experience co-morbidity of depression and alcohol use disorder. Multi-strategy interventions comprising ofpolicyand educationaltactics to address these problems are advocated.
背景:大学生的脆弱发展期是大学生在身体、大脑、环境和社会化等方面发生重大变化的阶段。这可能导致成瘾、酒精使用障碍和精神健康障碍的脆弱性增加。酒精使用障碍和抑郁症都对公众健康构成问题。目的:确定大学生酒精使用障碍和抑郁症共发病的患病率和社会人口学相关性。方法:在哈科特港大学Lulu Briggs健康中心进行横断面研究。采用系统抽样方法,共调查420人。使用经过验证的酒精使用障碍识别量表(AUDIT)和患者健康问卷(PHQ-9)分别从每个被调查者那里获得抑郁和酒精使用障碍的信息。结果:调查对象平均年龄23.59(±5.2)岁。共有128人(30.5%)患有酒精使用障碍,205人(48.8%)患有抑郁症,22.4% (n=94)患有抑郁症和酒精使用障碍。社会人口学调查结果与抑郁症和酒精使用障碍的合并症之间没有显著的关系。结论:约2 / 10的大学生存在抑郁和酒精使用障碍的合并症。建议采取包括政策和教育策略在内的多策略干预措施来解决这些问题。
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引用次数: 0
Auricular Anthropometry of Indigenes of Uturu, Abia State, Nigeria 尼日利亚阿比亚州Uturu土著人的耳廓人体测量学
Pub Date : 2023-04-22 DOI: 10.9734/ajrimps/2023/v12i2211
I. Bob-Manuel, Tunwemi Samson Roland, N. Nwosu
Background: The auricle is an important cephalofacial part of the human body that is of forensic importance that portrays information about one’s age, sex, race and ethnic group. Aim: This study was therefore conducted to establish auricular anthropometric data and sexual dimorphic parameters of Uturu indigenes in Southeastern Nigeria. Materials and Methods: A total of 370 subjects (185 males and 185 females) of Uturu indigenes who met the inclusion criteria were enrolled in the study. Auricular measurements which include auricular length and width and lobular length and width, as well as lobular attachments were obtained in inches. Data obtained was analyzed using SPSS version 23.0. Results: Total mean auricular length, auricular width, lobular length and lobular width in males was 2.11, 1.35, 0.66 and 0.46 respectively while same parameters in females were 2.06, 1.22, 0.66 and 0.44 respectively. No significant sexual dimorphism was observed in the measured parameters except for auricular width (P=0.01). Free earlobe was prevalent (68.92%: n=255) in the study population especially among the female subjects. Conclusion: The mean values for all auricular measurements were higher in males than in females except for lobular length which was the same in both sexes. Results The findings from this study provide useful evaluation of the auricular morphological characteristics among the study population will be useful in the documentation of auricular morphometric data, especially within Nigerian population.
背景:耳廓是人体重要的头面部部位,在法医鉴定中具有重要意义,它能反映一个人的年龄、性别、种族和民族的信息。目的:本研究旨在建立尼日利亚东南部乌图鲁土著人的耳廓人体测量数据和两性二态参数。材料与方法:本研究共纳入符合纳入标准的370名Uturu土著人(男185名,女185名)。耳廓测量包括耳廓长度和宽度,小叶长度和宽度,以及小叶附着物,以英寸为单位。所得数据采用SPSS 23.0进行分析。结果:男性平均耳长、耳宽、小叶长、小叶宽分别为2.11、1.35、0.66、0.46,女性平均耳长、小叶宽分别为2.06、1.22、0.66、0.44。除耳廓宽度外,各测量参数均无显著性差异(P=0.01)。游离耳垂在研究人群中普遍存在(68.92%:n=255),尤其是在女性受试者中。结论:除小叶长度外,男性各耳廓测量值的平均值均高于女性。结果本研究结果对研究人群的耳廓形态特征提供了有用的评价,将有助于耳廓形态测量数据的记录,特别是在尼日利亚人群中。
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引用次数: 0
Evaluation of Proximate, Minerals, Vitamins and Antinutrient Composition of Combretum platypterum (Welw.) Hutch. & Dalziel. (Combretaceae) Leaves 鸭嘴兽(Welw)的近似值、矿物质、维生素和抗营养成分的评价厨。和新西兰。叶子(使君子科)
Pub Date : 2023-04-19 DOI: 10.9734/ajrimps/2023/v12i2210
C. M. Onyegbulam, Mbanaso Chidinma, Odoh Uchenna Estella, Christopher Obodoechi Ezugwu, Chukwube Vincent Obisike, C. Ugorji
Background: Combretum platypterum (Welw.) Hutch. & Dalziel. (Combretaceae) leaves are used in treatment of jaundice and hepatitis in South-Eastern Nigeria. Evaluations of the nutritional composition of medicinal plants can enhance their profile as sources of food and medicines. This research aims to determine the proximate composition, minerals, vitamins, and anti-nutrients contents of Combretum platypterum (Welw.) Hutch. & Dalziel (Combretaceae) leaves. Methods: Proximate, minerals, and vitamins analysis are done according to the standard methods described by AOAC. Spectrophotometric methods and AAS were used to determined minerals. For the ANFs, oxalate concentration was determined using the permanganate titration method, phytate determination was based on the analysis of phosphorus in a ferric phytate complex, assuming a constant 4Fe: 6P molecular ratio in the complex. Tannins, trypsin inhibitors, and hemagglutinins were evaluated using other standard methods.  Results: Mineral content: Cal 1.14 mg/100g, Mg1.58 mg/100g, Mn 0.268 mg/100g, Cu 0.176 mg/100g, Zn 5.9 mg/100g, Se 0.957 mg/100g, Fe 3.596 mg/100g, K 1.537 mg/100g, Na 0.6 mg/100g, phosphorus 0.58mg/100g. Proximate analysis: protein 3.327 %, moisture 4.45 %, ash 2.65%, fibre 4.3%, fat 2.20 %, carbohydrates 83.07 %. Anti-nutrients content: oxalate: 0.577mg/100g, phytate 0.567mg/100g, hemagglutinin 0.428HU/mg, tannins 123.53 mg/100g), trypsin inhibitor 0.647±.003HIU/mg. Vitamin analysis: Vitamin C 0.328 mg/100g, vitamin D 0.227 mg/100g, vitamin E 0.59 mg/100g, vitamin K 0.137 mg/100g, and vitamin A (retinol) 4.507 µg/g   Conclusion: Combretum platypterum (Welw.) Hutch. & Dalziel (Combretaceae) leaves are rich in proximate elements, vitamins and essential minerals and low levels of antinutrients.
背景:鸭嘴兽(Combretum platypterum)厨。和新西兰。在尼日利亚东南部,叶子被用来治疗黄疸和肝炎。对药用植物的营养成分进行评价可以提高它们作为食品和药物来源的地位。本研究旨在测定鸭嘴兽(Combretum platypterum, Welw)的近似组成、矿物质、维生素和抗营养成分。厨。&达尔齐叶(菊科)。方法:比邻值、矿物质、维生素按AOAC标准方法进行分析。采用分光光度法和原子吸收光谱法测定矿物。对于ANFs,草酸盐浓度的测定采用高锰酸盐滴定法,植酸盐的测定基于对植酸铁络合物中磷的分析,假设络合物中4Fe: 6P的分子比恒定。单宁、胰蛋白酶抑制剂和血凝素用其他标准方法进行评价。结果:矿物质含量:Cal 1.14 mg/100g、mg 1.58 mg/100g、Mn 0.268 mg/100g、Cu 0.176 mg/100g、Zn 5.9 mg/100g、Se 0.957 mg/100g、Fe 3.596 mg/100g、K 1.537 mg/100g、Na 0.6 mg/100g、磷0.58mg/100g。近似分析:蛋白质3.327%,水分4.45%,灰分2.65%,纤维4.3%,脂肪2.20%,碳水化合物83.07%。抗营养素含量:草酸:0.577mg/100g,植酸:0.567mg/100g,血凝素:0.428HU/mg,单宁:123.53 mg/100g),胰蛋白酶抑制剂:0.647±0.003 hiu /mg。维生素分析:维生素C 0.328 mg/100g,维生素D 0.227 mg/100g,维生素E 0.59 mg/100g,维生素K 0.137 mg/100g,维生素A(视黄醇)4.507µg/g厨。&达尔齐叶(菊科)含有丰富的近元素、维生素和必需矿物质和低水平的抗营养素。
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引用次数: 0
Evaluation of the Efficacy of Herbal Antidotes of Viper Snakes through In-silico Docking Analysis of their Bioactive Components Targeting Phospholipase A2 以磷脂酶A2为靶点的蛇毒解毒中药的芯片对接分析
Pub Date : 2023-04-15 DOI: 10.9734/ajrimps/2023/v12i1209
R. Adithya, S. Kanimozhi
Introduction: Snake bite is common in Rural areas. Many toxic snakes produce neurotoxic, Myotoxic, and hemotoxic effects. Snake venom is rich in metalloproteinases and Phospholipases. PhospholipaseA2 accounts for most of the toxic effects of Viper snakes. Many herbal antidotes have been in practice in the Siddha system which lacks scientific evidence. Aim: This study aims to rule out the Binding pose and affinity of bioactive components derived from certain herbs with the target by forming hydrogen bonds so that the function of Phospholipases A2 with PDB – 2QOG would be hindered. Materials and Methods: From the listed plants 6 bioactive components were selected and In-Siico docking analysis was done with the target2QOG. Andrographolide (49 ASP, 52 TYR), Aristolochic acid(49 ASP, 52 TYR), Genistein(49 ASP, 52 TYR), and Nimbolide (49 ASP, 52 TYR) revealed a maximum of 2 interactions (50%) with the core active amino acid residues present on the target2QOG. Piperic acid (48 HIS) and Linoleic acid(48 HIS) reveal 1 interaction with the core active amino acid residues present on the target 2QOG. Conclusion: Based on the results it was concluded that the bio-active compounds Andrographolide, Aristolochic acid, and Genistein present in the herbal ingredients possess significant binding against the target enzyme phospholipases A2.
蛇咬伤在农村地区很常见。许多毒蛇产生神经毒性、肌毒性和血液毒性作用。蛇毒含有丰富的金属蛋白酶和磷脂酶。磷脂酶a2是蝰蛇中毒的主要原因。许多草药解毒剂已经在实践中,在悉达系统缺乏科学证据。目的:本研究旨在通过形成氢键来排除某些草药衍生的生物活性成分与靶标的结合姿态和亲和力,从而阻碍磷脂酶A2与PDB - 2QOG的功能。材料与方法:从所列植物中筛选出6种活性成分,与target2QOG进行In-Siico对接分析。Andrographolide (49 ASP, 52 TYR)、马兜铃酸(49 ASP, 52 TYR)、染料木黄酮(49 ASP, 52 TYR)和Nimbolide (49 ASP, 52 TYR)与target2QOG上的核心活性氨基酸残基存在最多2个相互作用(50%)。胡椒酸(48 HIS)和亚油酸(48 HIS)与目标2QOG上的核心活性氨基酸残基有1个相互作用。结论:中药成分中含有穿心莲内酯、马兜铃酸、染料木素等生物活性物质,对靶酶磷脂酶A2具有明显的结合作用。
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引用次数: 0
Phytochemical and Anti-ulcer Properties of Allophylus africanus P Beauv. (Sapindaceae) Leaf 非洲异叶草的植物化学和抗溃疡特性。(无患子科)叶
Pub Date : 2023-04-11 DOI: 10.9734/ajrimps/2023/v12i1208
C. Ikenna, C. Theodora, U. Odoh, C. Ugwuoke
Introduction: Ulcer has remained a persistent discomforting illness commonly causes by the bacteria Helicobacter pylori and prolonged or excessive use of anti-inflammatory pain killers like aspirin. While existing cases are difficult to treat and ,treat new cases are being diagnosed. Current treatments do not seem to be giving much hope to patients. Natural product and plant-based preparation are offering some measure of hope. Allophylus africanus has been reported to be effective in traditional medicine as an anti-ulcer agent. Objectives of the Study: This research aims to evaluate the antiulcer properties of the crude methanol extract of the leaf of the plant. Methodology: The plant material was extracted using the cold maceration. Methods: The acute toxicity was investigated according to Lorke’s method, while antiulcer activity was evaluated using stress and ethanol models, Omeprazole (200 mg/ml) was the reference drug. Phytochemical analysis of the crude extract was carried out using standard methods. Results: The crude extract is non-toxic at a below 5000 mg/kg dose. Preliminary phytochemical tests showed the presence of alkaloids. Saponins, tannins, flavonoids, carbohydrates, proteins, terpenoids etc. There was no significant between the activity of the standard drug (omeprazole 20mg/kg) and the crude extract (500 mg/kg) at (P ≤ 0.05). Conclusion: A. africanus has ulcer prevention activity and its use in the treatment of ulcer in ethnomedicine is justified.
简介:溃疡一直是一种持续的令人不适的疾病,通常由幽门螺杆菌和长期或过度使用抗炎止痛药如阿司匹林引起。虽然现有病例难以治疗,但正在诊断出新的病例。目前的治疗方法似乎并没有给病人带来多少希望。天然产品和植物制剂提供了一些希望。据报道,非洲异叶草在传统医学中作为抗溃疡剂是有效的。研究目的:本研究旨在评价该植物叶片粗甲醇提取物的抗溃疡性。方法:采用冷浸法提取。方法:以奥美拉唑(200 mg/ml)为对照药,采用Lorke 's法研究急性毒性,采用应激和乙醇模型评价其抗溃疡活性。采用标准方法对粗提物进行植物化学分析。结果:粗提物在5000mg /kg以下无毒。初步的植物化学测试显示其中含有生物碱。皂苷、单宁、黄酮类化合物、碳水化合物、蛋白质、萜类等。标准药(奥美拉唑20mg/kg)与粗提物(500 mg/kg)活性差异不显著(P≤0.05)。结论:非洲麻具有预防溃疡的作用,在民族医学中应用于溃疡治疗是合理的。
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引用次数: 0
Health Economic Evaluations for Alzheimer’s Disease: Pathophysiology, Diagnosis and Pharmacological Approaches 阿尔茨海默病的健康经济评估:病理生理学、诊断和药理学方法
Pub Date : 2023-03-28 DOI: 10.9734/ajrimps/2023/v12i1207
R. Raj, P. Paul, Yogesh Motwani, Aashutosh Sinwal, Ishu
Alzheimer's disease (AD) was first described by Alois Alzheimer in 1907 as a slowly progressing form of dementia that affects cognition, behavior, and functional status. It may be identified by the extracellular amyloid b (Ab) plaques as well as neurofibrillary tangle (NFT) deposits that are seen inside the neurons. Early-onset Alzheimer's disease (EOAD) and late-onset Alzheimer's disease (LOAD) are the two main categories that form the base of AD presentation. EOAD is a condition that develops before the age of 65 and is linked to Mendelian inheritance, which results in a mutation in the genes APP, PSEN1, or PSEN2. So it is familial AD. While LOAD occur after age 65 years of age and, it is not  related to a genetic cause. So it is sporadic AD. To assess and monitor the rate and pattern of cognitive loss, screening measures like the MMSE and the Montreal Cognitive Examination are utilized. Clinical biomarker testing is now available to assist physicians in determining the the presence and severity of AD pathologic alterations, as well as their lasting effects. Fibrillar (plaque) amyloid is detectable on PET. Despite the fact that AD is a public health issue, only two pharmaceutical classes—antagonists of N-methyl d-aspartate (NMDA) and inhibitors of the cholinesterase enzyme (naturally occurring, synthetic, and hybrid variants)—are allowed to be practiced to treat AD. AD is brought on by a decrease in the synthesis of acetylcholine (Ach) Increasing acetylcholine levels by decreasing acetylcholinesterase is one of the therapeutic interventions that enhances neuronal cells and cognitive function. Tacrine was the first cholinesterase inhibitor drug authorized by the FDA to be used for the treatment of AD.
阿尔茨海默病(AD)于1907年由Alois Alzheimer首次描述为一种缓慢进展的痴呆症,影响认知、行为和功能状态。可以通过细胞外淀粉样蛋白b (Ab)斑块以及神经元内可见的神经原纤维缠结(NFT)沉积来鉴别。早发性阿尔茨海默病(EOAD)和晚发性阿尔茨海默病(LOAD)是构成阿尔茨海默病表现基础的两个主要类别。EOAD是一种发生在65岁之前的疾病,与孟德尔遗传有关,它会导致APP、PSEN1或PSEN2基因突变。这是家族性阿尔茨海默病。虽然LOAD发生在65岁以后,但它与遗传原因无关。这是散发性阿尔茨海默病。为了评估和监测认知丧失的速度和模式,使用了MMSE和蒙特利尔认知检查等筛查措施。临床生物标志物测试现在可以帮助医生确定阿尔茨海默病病理改变的存在和严重程度,以及它们的持久影响。PET可检测到纤维状(斑块)淀粉样蛋白。尽管阿尔茨海默病是一个公共健康问题,但只有两类药物——n -甲基d-天冬氨酸拮抗剂(NMDA)和胆碱酯酶抑制剂(天然存在的、合成的和混合变体)——被允许用于治疗阿尔茨海默病。通过降低乙酰胆碱酯酶来提高乙酰胆碱水平是增强神经细胞和认知功能的治疗干预措施之一。他克林是第一个被FDA批准用于治疗AD的胆碱酯酶抑制剂药物。
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引用次数: 0
A Review on Benzothiazole Derivatives and Their Biological Significances 苯并噻唑衍生物及其生物学意义的研究进展
Pub Date : 2023-02-24 DOI: 10.9734/ajrimps/2023/v12i1206
Rima Mahapatra, K. Hazra
Benzothiazole is a molecule that has a wide range of pharmacological activities. The addition of a fluorine atom into the structure of benzothiazole enhances the various activities of the drug as the alteration of hydrogen or oxygen atom from a carbon bond by a fluorine atom improves desirable pharmacological properties such as greater biological half-life, higher ability to bind with the targeted receptor, and also enhances the lipophilic character of the drug. The special property that makes fluorine a very important molecule in the drug discovery includes a very small radius of the fluorine atom, a higher attacking power towards electrons, and a very low polarizability of the fluorine atom. Literature reveals that strong electron-attacking groups like fluorine in the structure of benzothiazole can exhibit anticancer activity of the drug, benzothiazole with Sulphonamide or with beta-lactam ring enhances the anti-inflammatory and antioxidant activity. Benzothiazole with oxadiazole shows potent anthelmintic activity [1-5].
苯并噻唑是一种具有广泛药理活性的分子。在苯并噻唑的结构中加入一个氟原子增强了药物的各种活性,因为氟原子改变了碳键上的氢原子或氧原子,从而改善了理想的药理学性质,如更长的生物半衰期,与目标受体结合的能力更高,并且还增强了药物的亲脂性。使氟成为药物发现中非常重要的分子的特殊性质包括氟原子的半径非常小,对电子的攻击能力更高,氟原子的极化率非常低。文献表明,苯并噻唑结构中的氟等强电子攻击基团可表现出药物的抗癌活性,苯并噻唑与磺胺或与β -内酰胺环结合可增强抗炎和抗氧化活性。苯并噻唑与恶二唑具有很强的驱虫活性[1-5]。
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引用次数: 0
The Best Time to Dental Implant Placement in Patients with Head and Neck Cancers: An Ever-going Debate 头颈部癌症患者种植牙的最佳时间:一个持续的争论
Pub Date : 2023-01-02 DOI: 10.9734/ajrimps/2023/v12i1205
E. Somay, Büşra Yilmaz, E. Topkan
With 500,000 new cases diagnosed each year, head and neck cancers (HNC) are among the most prevalent cancers in the world. The most effective organ-sparing therapy for patients with locally advanced HNC is concurrent chemoradiotherapy (C-CRT). Many HNC patients lose multiple teeth and develop soft and hard tissue defects over the course of the disease and treatment, leading to functional limitations and cosmetic deformity. Such devastating effects harm the patient's ability to eat, chew, and swallow as well as their psychological, financial, and social well-being. Additionally, multiple tooth losses and subpar oral rehabilitation services can cause cachexia, rapid weight loss, and weakened immunity. The use of conventional prostheses to address tooth losses may not be permitted due to detrimental changes in the structure of the oral cavity. Conventional prostheses may aggravate the harmful side effects of radiotherapy, including xerostomia, mucositis, and a deterioration of bone healing processes. Dental implants may be a better choice for oral rehabilitation. However, because the area of bone involved in implant placement is frequently within the irradiation zone, dental implant planning and timing in HNC patients can be extremely difficult. Additionally, the placement of dental implants may precipitate some specific side effects of cancer treatments, such as osteoradionecrosis. Because the best time to use dental implants is one of the essential components of successful dental rehabilitation for HNC survivors and has not yet been clarified in the literature, this review article aims to gather and provide information in the head and neck region by reviewing the available literature.
头颈癌(HNC)是世界上最常见的癌症之一,每年新确诊病例达50万例。局部晚期HNC患者最有效的器官保留治疗是同步放化疗(C-CRT)。许多HNC患者在疾病和治疗过程中失去多颗牙齿,并出现软硬组织缺损,导致功能限制和美容畸形。这种毁灭性的影响损害了患者的进食、咀嚼和吞咽能力,也损害了他们的心理、经济和社会福祉。此外,多颗牙齿脱落和不合格的口腔康复服务会导致恶病质、体重迅速下降和免疫力下降。由于口腔结构的有害变化,使用传统的假体来解决牙齿脱落可能是不允许的。传统的假体可能加重放射治疗的有害副作用,包括口干、粘膜炎和骨愈合过程的恶化。种植牙可能是口腔康复的较好选择。然而,由于涉及种植体放置的骨区域经常在照射区域内,因此HNC患者的牙科种植计划和时间安排可能非常困难。此外,牙种植体的放置可能会沉淀一些癌症治疗的特定副作用,如骨放射性坏死。由于使用种植体的最佳时间是HNC幸存者牙齿康复成功的重要组成部分之一,文献中尚未明确,因此本文旨在通过回顾现有文献来收集和提供头颈部区域的信息。
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引用次数: 0
Mature Wistar Rats' Spleen and Liver Histomorphological Changes Related to the Duration of Atrazine Exposure 成熟Wistar大鼠脾脏和肝脏组织形态学变化与阿特拉津暴露时间的关系
Pub Date : 2022-12-21 DOI: 10.9734/ajrimps/2022/v11i4204
Praise Ajiri Odi, O. A. Udi, Lilia Ebeye Chris-Ozoko, M. Oyovwi
Background: Spleen and liver is secondary lymphoid organ that is highly sensitive to different chemicals. Widespread use of pesticides in agriculture has always been a matter of concern.  And surprisingly, atrazine distinguishes out for being used more frequently among numerous harmful pesticides. As a result, long term exposure to atrazine and other pesticides is thought to produce metabolic abnormalities; however, little is known about how atrazine affects the spleen and liver and how this relates to its histo-achitectural structure. Aim: The histopathology of the spleen and liver from rats exposed to atrazine was the subject of our investigation. Materials and Methods: Twenty male wistar rats ranging from 150-200g were acclimated to laboratory conditions for 14 days, following which they were randomly assigned into 4 groups 1, 2, 3 and 4 of 5 animals each based on average body weight. Groups (2-4) were administered atrazine via oral route corresponding to 1237 mg/kg (20/5 LD50), 618 mg/kg (10/5 LD50) and 309 mg/Kg/body weight (1/10 LD50) for 7, 14 and 30 days, while group I (control) received distilled water orally using orogastric canula for 30 days . The liver and spleen from each group of rats were harvested, weighed, and fixed in 10% buffered formal saline fixative before being taken for histological examination 24 hours following the experimental periods of oral administration of the extract. Results: At the end of the experiment, the histological findings showed increased and numerous area of the white pulp of spleen from rats exposed to atrazine as compared to that from the control. The relative area of germinal centre in the structure of the splenic lymph follicles of rats exposed to atrazine also revealed increased. Also, Histo-pathologically, the liver showed necrotic hepatic cells and congested central vein, with the highest atrazine concentration causing the most adverse effects. Conclusion: Our data demonstrated that rats exposed to high-dose of atrazine led to hypertrophy of white pulp of the spleen and hepatic cell damage with liver. From this we concluded that both organ are highly sensitive to the debilitating effects of atrazine.
背景:脾脏和肝脏是对不同化学物质高度敏感的次级淋巴器官。农药在农业中的广泛使用一直是一个令人关注的问题。令人惊讶的是,阿特拉津在众多有害农药中使用频率更高。因此,长期接触阿特拉津和其他农药被认为会产生代谢异常;然而,关于阿特拉津如何影响脾脏和肝脏,以及这与脾脏和肝脏的组织结构之间的关系,人们知之甚少。目的:研究阿特拉津暴露大鼠脾脏和肝脏的组织病理学变化。材料与方法:将体重150 ~ 200g的雄性wistar大鼠20只,经实验室环境驯化14 d后,按平均体重随机分为1、2、3、4组,每组5只。各组(2 ~ 4)分别按1237 mg/kg (20/5 LD50)、618 mg/kg (10/5 LD50)和309 mg/kg (1/10 LD50)的剂量口服阿特拉津,连续7、14和30 d;ⅰ组(对照组)采用蒸馏水经口胃管灌胃,连续30 d。每组大鼠取肝脾,称重,于10%缓冲盐水固定液中固定,于口服提取物实验期24小时后取组织学检查。结果:实验结束时,与对照组相比,阿特拉津组大鼠脾脏白髓面积增加,数量增多。暴露于阿特拉津的大鼠脾淋巴滤泡结构中生发中心的相对面积也增加。肝组织病理表现为肝细胞坏死,中央静脉充血,以阿特拉津浓度最高引起的不良反应最多。结论:大鼠暴露于高剂量阿特拉津可导致脾白髓肥大和肝细胞损伤。由此我们得出结论,这两个器官对阿特拉津的衰弱作用高度敏感。
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引用次数: 1
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Asian Journal of Research in Medical and Pharmaceutical Sciences
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