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Therapeutic Activity of Phyto Ligands from Honey and Standard Drugs against Staphylococcus aureus PBP2a (5M19) 蜂蜜和标准药物植物配体对金黄色葡萄球菌PBP2a (5M19)的治疗活性
Pub Date : 2023-06-03 DOI: 10.9734/ajrb/2023/v12i3239
E. David, H. O. Uzoeto, C. Nelson, C. Samuel
Staphylococcus aureus is the most dangerous of all of the many common staphylococcal bacteria. These gram-positive, sphere-shaped (coccal) bacteria often cause skin infections but can cause pneumonia, heart valve infections, and bone infections and may be resistant to treatment with some antibiotics. Phenols were the most abundant phytochemical compounds and accounted for 25.8% of the phytochemical composition of the honey. The presence of these phytochemicals implied that the honey could have therapeutic properties like antimicrobial, anticancer, antioxidant, diuretic, and anti-inflammatory activities. two out of the six tested compounds faulted the Lipinski rule of 5 which states that Hydrogen Bond Donor (HBD) < 5 Hydrogen –Bond Acceptor  (HBA) < , 10 Molecular Weight  < 500 < 500 Molecular weight, < 5 H-bond donors, <10 H-bond acceptors.< 10 number of rotatable bonds, and  < 140 Å2 PSA value In this study. favourable overall docking score was observed in the range of -3.085 to -8.724. Chlorogenic acid had the best docked score (lowest binding energy)when compared to the synthetic inhibitors and other phytoligands. The binding manners and geometrical orientation of the studied phyto ligand from Honey and standard drugs against Staphylococcus aureus PBP2a (5M19). The results revealed that, Chlorogenic acid  showed pivotal binding interactions with PBP2a, as it exhibited the best binding energy (-8.724 kcal/mol) compared with to standard drugs (Cefoxitin; -5.985 kcal/mol, Oxacillin; -5.222 kcal/mol and methiclin -3.08 kcal/mol) and other phytoligands (protocatechuic acid -4.473 kcal/mol and Hesperetin -4.191 kcal/mol) tested. Hence, Chlorogenic acid could be studied as promising lead candidates acting as allosteric effectors of PBP2a that might be subjecte d to further structural optimization to enhance their biological activity and hence been synthesized and tested to evaluate their actual biological activity.
金黄色葡萄球菌是所有常见葡萄球菌中最危险的。这些革兰氏阳性球形(球菌)细菌通常引起皮肤感染,但也可引起肺炎、心脏瓣膜感染和骨骼感染,并可能对某些抗生素治疗具有耐药性。酚类是蜂蜜中含量最多的植物化学成分,占蜂蜜植物化学成分的25.8%。这些植物化学物质的存在意味着蜂蜜可能具有抗菌、抗癌、抗氧化、利尿和抗炎等治疗特性。6个被测化合物中有2个不符合Lipinski规则5,即氢键供体(HBD) < 5氢键受体(HBA) <10分子量< 500 < 500分子量,< 5氢键供体,<10氢键受体。< 10个可旋转键数,且< 140 Å2 PSA值。总体对接得分在-3.085至-8.724之间,较为有利。绿原酸与合成抑制剂和其他植物配体相比,具有最好的对接分数(最低的结合能)。研究了蜂蜜植物配体与标准药物对金黄色葡萄球菌PBP2a (5M19)的结合方式和几何取向。结果表明,绿原酸与PBP2a具有关键的结合作用,其结合能(-8.724 kcal/mol)优于标准药物(头孢西丁;-5.985千卡/摩尔,奥西林;-5.222千卡/mol和甲基林-3.08千卡/mol)和其他植物配体(原儿茶酸-4.473千卡/mol和橙皮素-4.191千卡/mol)进行了测试。因此,绿原酸可以作为PBP2a的变构效应物进行研究,进一步优化其结构以增强其生物活性,从而合成并测试其实际生物活性。
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引用次数: 0
Modulation of the Expression of Lipogenic Activity by Malted Hungry Rice Flour (Digitaria exilis.) on Rats Induced with Obesity 麦麸米粉对肥胖大鼠脂肪生成活性表达的调节作用
Pub Date : 2023-05-23 DOI: 10.9734/ajrb/2023/v12i3238
Umerah, Nkemjika Nnedinso, Asouzu, Ann Ifeoma
Lipolysis and lipogenesis causes obesity and these can be mediated by hormones. The                         study was aimed at determining the effect of malted hungry rice flour on lipogenic activity on diet-induced obese rats. The study was conducted between September to January 2021                              and 2022.  Twenty male adult albino rats were divided into four groups and obesity was induced which resemble mild obesity condition in human. The groups for the experiment were normal control (AIN-93), obese control, and two test diets were used to evaluate lipid profile                      parameter using a standard assay technique. There is an increase in BMI (from 0.37-0.41 to 0.58- 0.72). There are also an increase in other lipid profile with a decrease in HDL (p<0.05) after consumption of a palatable diet.  Consumption of the test diet led to a significant reduction                             in the lipid profile parameter, and a significant increase in HDL cholesterol compared to the             (group) obese control (p<0.05). The result suggests that malted hungry rice flour has an anti-obesity effect.
脂肪分解和脂肪生成导致肥胖,这些可以由激素介导。该研究旨在确定麦芽饥饿米粉对饮食诱导的肥胖大鼠的脂肪生成活性的影响。9月到2021年1月之间的研究                               和2022年。将20只成年雄性白化大鼠分为4组,诱导与人类轻度肥胖相似的肥胖状态。试验分为正常对照组(AIN-93)、肥胖对照组和两种试验饲粮,采用标准测定技术评价血脂参数。BMI也有所增加(从0.37-0.41增加到0.58- 0.72)。食用美味饮食后,其他脂质谱也增加,HDL降低(p<0.05)。与肥胖对照组相比,食用试验饮食导致血脂参数显著降低,高密度脂蛋白胆固醇显著升高(p<0.05)。结果表明,麦芽饥饿米粉具有抗肥胖作用。
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引用次数: 0
Comparative Impact of Solvent Extracts of Spondias mombin Leaves on In-vitro Antioxidant and Acetylcholinesterase Inhibitory Activities 海棘叶溶剂提取物对体外抗氧化和抑制乙酰胆碱酯酶活性的影响
Pub Date : 2023-05-15 DOI: 10.9734/ajrb/2023/v12i3236
U. Evuen, E. D. Kpomah
The underlying cause of a number of neurological disorders is oxidative stress. Given the dearth of medications now available to treat such disorders and their accompanying detrimental impacts, an urgent need exists for the global identification of brand-new antioxidants and acetylcholinesterase (AChE) inhibitors. This study evaluated the comparative impacts of the antioxidant and acetylcholinesterase activities of n-hexane, ethyl acetate, and methanol extracts of S. mombin leaves. The dried leaf samples of the plant were triturated. Following maceration of the powdered plant materials in each of the three extraction solvents (methanol, n-hexane, and ethyl acetate), the resulting solutions were separately subjected to lyophilization. The in-vitro antioxidant analysis was determined by employing the 2,2-diphenyl-1-picrylhydrazyl (DPPH) and lipid peroxidation (LPO) assays. Acetylcholinesterase (AChE) inhibitory abilities of the various extracts were also evaluated using a standard protocol. The methanol extract showed the greatest DPPH scavenging (75.91%) and AChE inhibitory (40.17%) properties in the DPPH and AChE inhibitory assays, respectively. The DPPH and lipid peroxidation assays also demonstrated that all extracts had dose-dependent antioxidant properties. In addition, evaluations of each extract's ability to inhibit lipid peroxidation revealed that, at initial concentrations of 0.05 mg/L and 0.1 mg/L, the methanol extract displayed stronger LPO inhibitory effects (5.90%, 6.15%) than the n-hexane (4.00%, 5.4%) and ethyl acetate (3.26%, 3.99%) extracts. Nonetheless, the n-hexane extract showed a greater LPO inhibitory effect (10.00%, 10.34%) at higher dosages of 0.2 mg/L and 0.5 mg/L respectively. The results of this study have shown that methanol is the best solvent for exploiting the pharmacological benefits of S. mombin leaves thereby reasserting the numerous applications of the plant in traditional medicine. It has also paved the way for the development of novel therapeutic alternatives for a range of neurodegenerative disorders and other health concerns.
许多神经系统疾病的潜在原因是氧化应激。鉴于目前可用于治疗此类疾病及其伴随的有害影响的药物的缺乏,迫切需要在全球范围内识别新的抗氧化剂和乙酰胆碱酯酶(AChE)抑制剂。本研究比较了山楂叶正己烷、乙酸乙酯和甲醇提取物对抗氧化活性和乙酰胆碱酯酶活性的影响。这种植物的干叶样品经过了发酵。在三种提取溶剂(甲醇,正己烷和乙酸乙酯)中浸泡粉末状植物材料后,将所得溶液分别进行冻干。体外抗氧化分析采用2,2-二苯基-1-苦味酰肼(DPPH)和脂质过氧化(LPO)测定。各种提取物的乙酰胆碱酯酶(AChE)抑制能力也使用标准方案进行了评估。在DPPH和AChE抑制实验中,甲醇提取物对DPPH和AChE的清除率分别为75.91%和40.17%。DPPH和脂质过氧化实验也表明,所有提取物都具有剂量依赖性的抗氧化特性。此外,对各提取物抑制脂质过氧化的能力进行了评价,结果表明,在初始浓度为0.05 mg/L和0.1 mg/L时,甲醇提取物的LPO抑制作用(5.90%、6.15%)强于正己烷提取物(4.00%、5.4%)和乙酸乙酯提取物(3.26%、3.99%)。而正己烷提取物在0.2 mg/L和0.5 mg/L的剂量下对LPO的抑制作用为10.00%,10.34%。本研究结果表明,甲醇是开发山楂叶药理作用的最佳溶剂,从而重申了该植物在传统医学中的众多应用。它还为一系列神经退行性疾病和其他健康问题的新型治疗方案的发展铺平了道路。
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引用次数: 1
Comparative Study of Remnant Cholesterol, Some Lipid Fractions and FBS Level in Overweight and Obese Participants in South East Nigeria 尼日利亚东南部超重和肥胖人群中残余胆固醇、部分脂质组分和FBS水平的比较研究
Pub Date : 2023-05-05 DOI: 10.9734/ajrb/2023/v12i3235
N. J. Chinonso, U. K. Amah, Onuegbu J. Anaelechi, Okeke C. Stellarmaris, Oti D. Chukwudi, Iwuagwu G. Obioma, I. S. Nwaisaac, Ahams E. Chika
Background: Obesity is one of the characteristics of metabolic disorders, it has been linked to cardiovascular diseases. Remnant cholesterol has been proposed to be a link between obesity and coronary heart disease, thus a risk factor for the development of cardiovascular disease in obese people.  We compared the level of calculated non-fasting remnant cholesterol, fasting and non-fasting lipid profile and fasting blood sugar in overweight, obese and normal weight participants in Nnewi, a town in South East Nigeria. Methods: In this cross-sectional study, a total of 90 apparently healthy obese, overweight and normal weight participants who met the inclusion criteria were randomly enrolled. They were grouped using their body mass index of 18.5 to 24.9 kg/m2 (normal weight), 25 to 29.9 kg/m2 (overweight) and ≥30 kg/m2 (obese). The parameters were analyzed using standard methods. Results: Our results shows that there was progressive increase of remnant cholesterol among the group, this increase has no statistical difference (p>0.05) in the mean calculated remnant cholesterol (mmol/l) between the obese (0.72±0.4), overweight (0.68±0.46), and normal weight (0.50±0.28) participants. The mean fasting Very Low Density Lipoprotein (VLDL) and Triglyceride (TG) (mmol/l) were significantly higher (p<0.05) in overweight compared to normal weight participants (0.76±0.31 vs. 0.47±0.22) and (1.72±0.60 vs. 1.09±0.51) and obese participants (0.82±0.23 vs. 0.47±0.22) and (1.85±0.59 vs. 1.09±0.51) when compared to normal weight participants respectively. FBS levels (mmol/l) were significantly lower in normal weight participants when compared to overweight participants (3.45±0.79 vs. 4.46±1.82) and obese participants (3.46± 0.79 vs. 4.94±1.26). Conclusion: The results obtained from this study demonstrated a progressive increase in the level of remnant cholesterol which was not statistically significant among apparently healthy individuals across the group. Furthermore we did not observed Remnant cholesterol as a sole predictor to obesity which will lead to cardiovascular diseases, with the rising prevalence of obesity in developing country as well as its associated complications and risks.
背景:肥胖是代谢性疾病的特征之一,它与心血管疾病有关。残余胆固醇被认为是肥胖和冠心病之间的联系,因此是肥胖人群发生心血管疾病的危险因素。我们比较了尼日利亚东南部Nnewi镇超重、肥胖和正常体重参与者的计算非空腹残余胆固醇水平、空腹和非空腹血脂和空腹血糖。方法:采用横断面研究方法,随机选取符合纳入标准的90例明显健康的肥胖、超重和正常体重的受试者。按体重指数18.5 ~ 24.9 kg/m2(正常体重)、25 ~ 29.9 kg/m2(超重)和≥30 kg/m2(肥胖)分组。采用标准方法对各参数进行分析。结果:我们的研究结果显示,组内残余胆固醇呈进行性增加,肥胖组(0.72±0.4)、超重组(0.68±0.46)和正常体重组(0.50±0.28)的平均计算残余胆固醇(mmol/l)的增加无统计学差异(p>0.05)。与正常体重组相比,超重组空腹极低密度脂蛋白(VLDL)和甘油三酯(TG) (mmol/l)的平均值(0.76±0.31 vs. 0.47±0.22)和肥胖组(0.82±0.23 vs. 0.47±0.22)和肥胖组(1.85±0.59 vs. 1.09±0.51)分别显著高于正常体重组(p<0.05)。体重正常受试者的FBS水平(mmol/l)明显低于超重受试者(3.45±0.79 vs. 4.46±1.82)和肥胖受试者(3.46±0.79 vs. 4.94±1.26)。结论:本研究结果表明,残余胆固醇水平逐渐升高,但在整个组中,在表面健康的个体中没有统计学意义。此外,我们没有观察到残余胆固醇是肥胖导致心血管疾病的唯一预测因素,而肥胖在发展中国家的患病率及其相关并发症和风险正在上升。
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引用次数: 0
An Investigation on Synthesis of Silver Nanoparticles 纳米银的合成研究
Pub Date : 2023-05-04 DOI: 10.9734/ajrb/2023/v12i3234
Md. Ashraful Alam, Salma Akter Munni, Sabrina Mostafa, Raton Kumar Bishwas, S. Jahan
Introduction: Nano science and nano biotechnology provided enormous opportunities for exploring the bactericidal and fungicidal activities. Since ancient times, silver was known for its anti-bacterial effects and for centuries it has been used for prevention and control of disparate infections. On the effective use silver nanomaterials synthesized and characterized play a vital role of the modern science. Aims: Our goal is to prepare silver nanomaterials since studies have shown that silver nanoparticles have efficient activity against bacterial biofilms. Methodology: The silver nanoparticles were generally synthesized by non-aqueous sol-gel technique in the presence of different precursor by chelating agent. Results: Here found a cubic unit cell with miller indices (111) (200) (220) (311) (222) and crystallite size around 50.00nm by XRD. The morphology of the prepared nano particles has been revealed by SEM below 10.00 nm and TEM is below 5.00nm in size of graphical presentation such as size, shape, surface etc. of the nanoparticles. DLS is a unique technique to discern particle size around 65.00nm and size distributions in aqueous or physiological solutions of the nanoparticles. Conclusion: The studies on the combined synthesized and use of AgNPs with other antimicrobial agents generally help reduce the problem of toxicity and to avoid the potential for development of resistance and strongly enhance the microbicidal effect. This paper describes a short and very precise description about the chemical synthesis process of silver nanoparticles like no aqueous SGM. Also, this paper contains a brief description about different characterization technique of nanoparticles like X-ray Diffraction review the shape of crystal a cubic unit cell with miller indices (111) (200) (220) (311) (222) where crystallite size around 50.00nm, the morphology of the prepared nanoparticles has been revealed with size 10.00nm by SEM, Dynamic Light Scattering discern particle size around 65.00nm and Transmission Electron Microscope review the spherical shape of the nanomaterials.  Further investigation will be continuing the antimicrobial activity test of AgNPs with ceramic coating.
纳米科学和纳米生物技术为探索杀菌和杀真菌活性提供了巨大的机会。自古以来,银就以其抗菌作用而闻名,几个世纪以来,它一直被用于预防和控制各种感染。对有效利用银纳米材料的合成和表征在现代科学中起着至关重要的作用。目的:我们的目标是制备银纳米材料,因为研究表明银纳米颗粒对细菌生物膜具有有效的活性。方法:一般采用溶胶-凝胶法在不同前驱体和螯合剂的存在下合成纳米银。结果:通过x射线衍射(XRD),得到米勒指数为(111)(200)(220)(311)(222)的立方晶胞,晶粒尺寸约为50.00nm。通过10.00 nm以下的扫描电镜和5.00nm以下的透射电镜对所制备的纳米颗粒的尺寸、形状、表面等进行了表征。DLS是一种独特的技术,可以识别约65.00nm的颗粒大小和纳米颗粒在水或生理溶液中的大小分布。结论:AgNPs与其他抗菌药物联合合成和使用的研究总体上有助于减少毒性问题,避免耐药性的产生,有力地增强了杀微生物效果。本文简要而精确地描述了无水SGM等纳米银的化学合成过程。此外,本文还简要介绍了纳米颗粒的不同表征技术,如x射线衍射,回顾了米勒指数(111)(200)(220)(311)(222)立方晶的晶体形状,其中晶粒尺寸约为50.00nm,制备的纳米颗粒的形貌通过扫描电镜显示为10.00nm。动态光散射表征了纳米材料在65.00nm左右的粒径,透射电镜表征了纳米材料的球形结构。进一步的研究将继续进行陶瓷涂层AgNPs的抗菌活性测试。
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引用次数: 1
Hematological and Cardiac Marker Values of Adult Male Wistar Rats Administered a Combination of Common Antimalarial Drugs and Ciprofloxacin 常用抗疟药联合环丙沙星对成年雄性Wistar大鼠血液学和心脏指标的影响
Pub Date : 2023-04-17 DOI: 10.9734/ajrb/2023/v12i2233
F. N. Okwakpam, O. Azuonwu, S. Omeodu, D. H. Atako
This work investigated the possible effects of the administration of artemether-lumefantrine Ciprofloxacin, and their combinations on haematological parameters and cardiac biomarkers of adult male Wistar rats. A total of 20 rats were used for this study, the rats were divided into four groups of five rats each. Animals in group 1 served as control (distilled water), and Group 2 rats received 20/120g/kg body weight of artemether-lumefantrine. Group 3 rats received 125mg/kg body weight of ciprofloxacin. Group 4 took a combination of 20/120g/kg body weight of artemether-lumefantrine and 125mg/kg body weight of ciprofloxacin. The drugs were administered orally for 14 days. At the end of the experimental period, the rats were sacrificed and blood samples and heart tissues were collected for biochemical analysis. The results of this study showed that there was no significant (p<0.05) alteration in relative heart weight in all the test groups when compared to the control (group 1). However, the serum level of troponin, myoglobin and creatinine-kinase MB were significantly (p<0.05) elevated in group 4 animals treated with a combination of artemether-lumefantrine plus ciprofloxacin (group 4 when compared to control (group 1). The haematological results also showed that there was a significant (p<0.05) decrease in the plasma level of PCV, HB, RBC and WBC in group 4 animals when compared to control (group 1). The histological heart examination showed no pathological changes. However, changes in haematological indices and serum activities of diagnostic proteins of cardiac origin should be taken into account.
本研究探讨了蒿甲醚-氨苯曲明-环丙沙星及其联合用药对成年雄性Wistar大鼠血液学参数和心脏生物标志物的可能影响。实验用大鼠20只,分为4组,每组5只。1组为对照(蒸馏水),2组大鼠给予20/120g/kg体重的蒿甲醚-甲苯胺。3组大鼠给予环丙沙星125mg/kg体重。第4组联合用药20/120g/kg体重的蒿甲醚-氨苯曲明和125mg/kg体重的环丙沙星。药物口服14天。实验结束时,处死大鼠,采集血液和心脏组织进行生化分析。本研究结果显示,与对照组(1组)相比,各试验组的相对心脏重量均无显著变化(p<0.05)。与对照组(1组)相比,第4组(蒿甲醚-氨苯曲明联合环丙沙星组)的肌红蛋白和肌酐激酶MB显著(p<0.05)升高。血液学结果也显示,第4组动物的血浆PCV、HB、RBC和WBC水平显著(p<0.05)降低。心脏组织学检查未见病理改变。然而,血液学指标的变化和心脏源性诊断蛋白的血清活性应考虑在内。
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引用次数: 0
The Use of Chemical Bleaching and Thin-layer Chromatographic Methods for the Detection and Identification of Sudan-III Dye in Adulterated Palm Oil 用化学漂白和薄层色谱法检测和鉴定掺假棕榈油中的苏丹ⅲ染料
Pub Date : 2023-04-13 DOI: 10.9734/ajrb/2023/v12i2232
E. Okogbenin, N. U. Asiriuwa, B. O. Imoisi, D. C. Onyia, T. Okunwaye, V. Ezoguan, I. Gold, J. U. Obibuzor, H. Anemene, O. I. Akpose, E. Osawaru
The deleterious effect of consuming azo dye adulterants in palm oil is well documented including cancer. The presence of Sudan-III dye in palm oil cannot be detected by mere visual inspection. This study was aimed at developing a simple, cheap and convenient protocol for detection and identification of Sudan-III and other azo dyes in adulterated palm oil. The results revealed that the refractive index could be used to screen for azo dye adulteration in palm oil samples as the parameter increases with increasing concentration of Sudan-III dye in palm oil and were statistically different ((p<0.05) from crude unadulterated palm oil samples. Analytical thin layer chromatography and chemical bleaching using 20% v/v each of concentrated sulphuric acid and 30% hydrogen peroxide in palm oil was effective in detecting Sudan III dye adulteration in concentrations of 10mg/L and above.
食用棕榈油中偶氮染料掺杂物的有害影响是有案可查的,包括致癌。棕榈油中苏丹ⅲ染料的存在不能仅仅通过目测检测出来。本研究旨在建立一种简单、廉价和方便的方法来检测和鉴定掺假棕榈油中的苏丹ⅲ和其他偶氮染料。结果表明,折射率随棕榈油中苏丹ⅲ染料浓度的增加而增大,可用于筛选棕榈油样品中偶氮染料的掺假,与未掺假的原始棕榈油样品有统计学差异(p<0.05)。分析薄层色谱法和在棕榈油中分别使用20% /v的浓硫酸和30%过氧化氢进行化学漂白,可有效检测浓度在10mg/L及以上的苏丹ⅲ染料掺假。
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引用次数: 0
Potentials of Pterocarpus erinaceus Poir: Aqueous Stem Bark Extract to Prevent Development of cardiomyopathy in Rats 龙柏树皮水提取物预防大鼠心肌病发展的潜力
Pub Date : 2023-04-06 DOI: 10.9734/ajrb/2023/v12i2231
I. Haruna, A. Ijeomah, S. O. Ajiboso, O. P. Nzute, M. Zaruwa
Cardiomyopathy is one of the significant complications of diabetes mellitus.  Hyperglycemia plays a central role in the pathogenesis of diabetic cardiomyopathy. The aqueous stem bark extract of Pterocarpus erinaceus was investigated for its phytochemical constituents, its effects on blood glucose level, lipid profile, antioxidants markers, and cardiac markers for heart tissue damage in alloxan induced diabetic wistar albino rats. Thirty five (35) rats were randomly divided into six groups. The animals in groups 2-6 were induced with a single dose of 150 mg/kg body weight of alloxan intraperitoneally. They were confirmed hyperglycemic after 72 hours of induction. Group 3 rats were treated with vitamin C as standard drug while group 4-6 were treated with P. erinaceus extract (100, 200 and 400 mg/kg body w. t) for 14 days. The results shows that P. erinaceus aqueous stem bark extract contains flavonoids as the most abundant constituent with concentration of (452.67±7.37 mg/100g). The aqueous stem bark extract given at dose of 100, 200 and 400 mg/kg decrease blood glucose concentration of rats by 44.26%, 47.16% and 74.41% respectively at 14th day of treatment. The rats treated with the plant extract shows significant decrease (p < 0.05) in triglyceride (TG), total cholesterol (TC), and low-density lipoprotein (LDL) levels as well as significant increase (p<0.05) in the levels of total protein (TP) and  high-density lipoprotein (HDL) compared to the diabetic untreated rats. Antioxidant markers such as catalase (CAT), superoxide dismutase (SOD), glutathione peroxidase (GPx), reduced glutathione (GSH) and glutathione transferase (GST) significantly increased (p<0.05) in rats treated with the extract, while malondialdehyde (MDA) level was significantly reduced (p<0.05) compared to the diabetic untreated rats. Serum cardiac markers for heart tissue damage such as cardiac Troponin I (cTnI), aspartate transferase (AST) and creatine kinase-myocardial band (CK-MB) significantly increased (p<0.05) in untreated diabetic rats compared to the diabetic rats treated with the extracts at all doses. Aqueous stem bark extract exhibited antihyperglycemic and antihyperlipidemic activities and mitigated damage to the heart from the alloxan-induced myocardial toxicity associated with type-1 diabetes.
心肌病是糖尿病的重要并发症之一。高血糖在糖尿病性心肌病的发病机制中起核心作用。研究了四氧嘧啶诱导的糖尿病大鼠的植物化学成分、血糖水平、血脂水平、抗氧化指标和心脏组织损伤指标的变化。35只大鼠随机分为6组。2 ~ 6组小鼠腹腔注射单剂量的四氧嘧啶150 mg/kg体重诱导。诱导72小时后确诊为高血糖。3组大鼠以维生素C为标准药,4-6组大鼠以蛇尾草提取物(100、200、400 mg/kg体w / t)治疗14 d。结果表明,蛇耳草茎皮水提物中黄酮类化合物含量最高,含量为(452.67±7.37 mg/100g)。给药第14天,茎皮水提物100、200、400 mg/kg组大鼠血糖浓度分别降低44.26%、47.16%和74.41%。与未处理的糖尿病大鼠相比,植物提取物处理大鼠的甘油三酯(TG)、总胆固醇(TC)和低密度脂蛋白(LDL)水平显著降低(p<0.05),总蛋白(TP)和高密度脂蛋白(HDL)水平显著升高(p<0.05)。过氧化氢酶(CAT)、超氧化物歧化酶(SOD)、谷胱甘肽过氧化物酶(GPx)、还原性谷胱甘肽(GSH)和谷胱甘肽转移酶(GST)等抗氧化指标显著升高(p<0.05),丙二醛(MDA)水平显著降低(p<0.05)。糖尿病大鼠血清心肌组织损伤标志物心肌肌钙蛋白I (cTnI)、天冬氨酸转移酶(AST)和肌酸激酶-心肌带(CK-MB)均显著高于各剂量组(p<0.05)。茎皮水提取物显示出降糖和降血脂的活性,减轻了四氧嘧啶引起的与1型糖尿病相关的心肌毒性对心脏的损害。
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引用次数: 0
Potential of Pterocarpus erinaceus Aqueous Stem Bark Extract to Prevent Oxidative Kidney Damage in Diabetic Rats 狐尾树茎皮水提取物对糖尿病大鼠氧化性肾损伤的预防作用
Pub Date : 2023-03-29 DOI: 10.9734/ajrb/2023/v12i2230
O. P. Nzute, A. Ijeomah, S. O. Ajiboso, B. Muhammad, I. Haruna
Diabetes is a chronic, metabolic disease characterized by elevated levels of blood glucose, which over time leads to serious damage to the heart, blood vessels, eyes, kidneys and nerves. This present study investigated the potential of Pterocarpus erinaceus aqueous stem bark extract to prevent oxidative kidney damage in diabetic rats. Thirty six (36) male wistar rats of 100 to 200g were used. The rats were divided into six groups (A-F). Diabetes mellitus was induced in groups B-F by injecting alloxan at the dose of 150 mg/kg body weight. After 72hours, diabetes was confirmed. Vitamin C 25 mg/kg b.wt was used as standard treatment for group C and aqueous extract of Pterocarpus erinaceus stem bark at doses of 100, 200 and 400 mg/kg b.wt were administered to groups  D, E and F respectively. All treatments were given orally, daily for 14 days. Phytochemical screening of the extract, Blood glucose level and oral glucose tolerance test were determined. At the end of the experiment, the serum, kidney tissue and kidney homogenate were obtained for the determination of kidney function parameters, histology, lipid peroxidation, antioxidant and inflammation markers. Phytochemical results shows the presence of phenols, tannins, saponins, alkaloids, glycosides, cardiac glycosides and flavonoides. Diabetic rats administered with Pterocarpus erinaceus aqueous stem bark extract showed significant (P<0.05) decrease in, blood glucose, creatinine, blood urea nitrogen (BUN), potassium, MDA, TNF-alpha, IL-6 and TGF-β when compared with diabetic control rats. Also a non significant (P>0.05) decrease in uric acid, albumin, and an increase in sodium, GSH when compared with the diabetic control group. A significant (P<0.05) increase was observed in SOD, CAT, GPx, and GST when compared with diabetic control rats. The kidney histology shows well protected kidney. These results obtained shows that aqueous extract of Pterocarpus erinaceus stem bark exhibited significant antihyperglycemic, improvement in kidney function, antioxidant and anti inflammatory markers and prevented kidney tissue damage in alloxan-induced diabetic rats. This might be useful in the management diabetes mellitus patients.
糖尿病是一种慢性代谢性疾病,其特征是血糖水平升高,随着时间的推移,会对心脏、血管、眼睛、肾脏和神经造成严重损害。本研究探讨了狐尾树茎皮水提物对糖尿病大鼠氧化性肾损伤的预防作用。选用100 ~ 200g雄性wistar大鼠36只。将大鼠分为6组(A-F)。B-F组大鼠以150 mg/kg体重剂量注射四氧嘧啶诱导糖尿病。72小时后确诊为糖尿病。C组以维生素C 25 mg/kg b.wt作为标准处理,D、E、F组分别以100、200、400 mg/kg b.wt的剂量给药。所有治疗均给予口服,每日,连用14天。测定提取物的植物化学筛选、血糖水平及口服糖耐量试验。实验结束时取大鼠血清、肾脏组织和肾脏匀浆,测定肾脏功能参数、组织学、脂质过氧化、抗氧化和炎症指标。植物化学结果显示,其中含有酚类、单宁类、皂苷类、生物碱类、苷类、心苷类和黄酮类化合物。与糖尿病对照组相比,给药后的糖尿病大鼠尿酸、白蛋白含量显著降低(P0.05),钠、谷胱甘肽含量显著升高(P0.05)。与糖尿病对照组相比,SOD、CAT、GPx、GST均显著升高(P<0.05)。肾脏组织学显示肾脏保护良好。上述结果表明,龙柏树皮水提物对四氧嘧啶诱导的糖尿病大鼠具有明显的降血糖、改善肾功能、抗氧化和抗炎作用,并能预防肾组织损伤。这对糖尿病患者的治疗有一定的指导意义。
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引用次数: 1
Evaluation of Selected Vitamins and Antioxidant Potential of Methanol Seed Extract of Persea americana 美洲洋槐甲醇籽提取物的部分维生素及抗氧化潜力评价
Pub Date : 2023-03-29 DOI: 10.9734/ajrb/2023/v12i2228
Omorevbarhia, Omorovbiye, Umerie, Sunday Chidozie, Aniefuna, Ejike Louis, Oguazu Chinenye Enoch
Introduction: Persea americana seeds have been used in ethnomedicine as a potent remedy for putative health conditions such as muscular and menstrual pains, hypertension, diabetes mellitus, anaemia, insomnia, hyperlipidaemia, diarrhoea, dysentery, gastric and peptic ulcers. Aim: This study investigated the antioxidant scavenging activities of the methanol extract of Persea americana seed. Methods: The seed samples were collected, dried, ground into powder and extracted in methanol by cold maceration. The antioxidant activity was determined using 2,2-diphenyl-1-picryhydrazyl, lipid peroxidation and reducing power assays. Antioxidant vitamins (A, E and C) and enzymes (superoxide dismutase, peroxidase and catalase) were assayed using absorption spectroscopic methods. Results: There was a significant increase (p≤0.05) in the DPPH scavenging effect and inhibition of lipid peroxidation activity with increasing extract concentration. There is an increase in spectroscopic absorbance value as the concentration of the sample extract, in the reaction mixture, increases indicating its reducing power ability. The EC50 values for DPPH, lipid peroxidation and reducing power assays were 610 µg/ml, 640.51 µg/ml and 580 µg/ml respectively. Vitamin E (267.73 ±             0.07 mg/ 100 g) content was the highest among the antioxidant vitamins investigated (Vitamin A (7.60 ± 0.01 mg/100 g) and C (3.88 ± 0.03 mg/100 g). Conclusion: The chemical compositions of the investigated samples might be responsible for their medicinal values in phytomedicine. This study shows that Persea americana seeds are adequate in maintaining healthy nutrition for preventing the accumulation of destructive free radicals. The radical scavenging abilities exhibited by the seed extract may be attributed to the high polyphenolic content and antioxidant enzymes present.
简介:美洲波斯种子已被用于民族医学,作为一种有效的治疗假定的健康状况,如肌肉和月经疼痛,高血压,糖尿病,贫血,失眠,高脂血症,腹泻,痢疾,胃溃疡和消化性溃疡。目的:研究美洲洋槐种子甲醇提取物的抗氧化清除活性。方法:采集种子样品,干燥,研磨成粉末,冷浸甲醇提取。采用2,2-二苯基-1-苦酰肼、脂质过氧化和还原力测定其抗氧化活性。采用吸收光谱法测定抗氧化维生素(A、E、C)和酶(超氧化物歧化酶、过氧化物酶、过氧化氢酶)含量。结果:随着提取物浓度的增加,其对DPPH的清除作用和对脂质过氧化活性的抑制作用显著增强(p≤0.05)。随着反应混合物中样品提取物浓度的增加,光谱吸光度值增加,表明其还原能力。DPPH、脂质过氧化和还原力的EC50值分别为610µg/ml、640.51µg/ml和580µg/ml。其中维生素E含量最高(267.73±0.07 mg/100 g),维生素A含量最高(7.60±0.01 mg/100 g),维生素C含量最高(3.88±0.03 mg/100 g)。结论:所调查样品的化学成分可能与植物药的药用价值有关。本研究表明,美洲洋槐种子具有足够的营养,可以防止破坏性自由基的积累。种子提取物所表现出的自由基清除能力可能归因于其高多酚含量和抗氧化酶的存在。
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引用次数: 0
期刊
Asian Journal of Research in Biochemistry
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