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Evaluation of the Influence of Some Abiotic Factors on the Microbiological Quality of Groundwater in Soa Sub-division, Cameroon, Africa 非洲喀麦隆索阿地区几种非生物因素对地下水微生物质量影响评价
Pub Date : 2021-12-22 DOI: 10.9734/arrb/2021/v36i1230470
G. Mafany, Edith Brunelle Mouafo Tamnou, A. Z. Ekoa Bessa, J. Ndjama, Gisèle Liliane Machuetum, Frank Aristide Tchouape Noubouossie, M. Nola
Groundwater samples were collected during April and August 2016 from five hand-dug wells in Soa subdivision, Cameroon, Africa, with the aim to assess the microbiological quality of them and the health risk they (it) posed to the population in the study area. The low piezometric levels (9 – 20 m) and the little variation in curb-stone heights (0.58 – 1.05 m) suggest that the wells are vulnerable to pollution. The physicochemical parameters show that the groundwater of Soa is acidic and poorly mineralized. The residents (population that is) dominated by students are not connected to the supply of water, making them to take recourse to groundwater for potable and general domestic use. Bacteriological analysis of the water samples focused on the search and listing of heterotrophic mesophilic aerobic bacteria (HAMB). Also, bacteria of the Enterobacteriaceae family were isolated, identified and listed (Escherichia, Klebsiella, Shigella, Citrobacter, Providencia). The analyses were carried out through standard, selective and conventional gallery culture media, using surface spreading, streaking and sub-culturing techniques. Different ions were also measured for the physicochemical component according to the usual analytical techniques. The low values of oxidability recorded clearly indicated the organic pollution of the study area. The organic matter was found largely influencing the increase in bacterial load (which is high and varied). The presence of these germs degrades the quality of the water, which varies from one site to the other, with the important factors being the proximity of the sources of pollution to the well and its poor maintenance. As local populations are using these ground waters without any prior treatment, they are prone to health risks over the period time.
2016年4月至8月,在非洲喀麦隆Soa地区的5口手挖井中采集了地下水样本,目的是评估其微生物质量及其对研究区人口构成的健康风险。较低的压力水平(9 - 20米)和较小的石块高度变化(0.58 - 1.05米)表明这些井容易受到污染。理化参数表明,Soa地下水呈酸性,矿化程度较差。以学生为主的居民(人口)与供水没有联系,使他们依靠地下水作为饮用水和一般家庭用水。水样的细菌学分析侧重于寻找和列出异养中嗜氧好氧细菌(HAMB)。分离鉴定出肠杆菌科细菌(埃希氏菌、克雷伯氏菌、志贺氏菌、Citrobacter、普罗维登西亚菌)。通过标准、选择性和常规的画廊培养基,采用表面扩散、条纹和亚培养技术进行分析。根据常用的分析方法,测定了不同离子的理化成分。较低的氧化性表明研究区存在有机污染。发现有机物在很大程度上影响了细菌负荷的增加(这是高的和变化的)。这些细菌的存在降低了水的质量,水的质量因地点而异,重要的因素是污染源离水井很近,而且维护不善。由于当地居民在未经任何事先处理的情况下使用这些地下水,他们在一段时间内很容易面临健康风险。
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引用次数: 3
Occupational and Environmental Health Concerns on Unsafe Acts and Conditions in Poultry Production Sites in Ido-Osi, Ekiti State, Nigeria 尼日利亚埃基蒂州伊多奥西家禽生产场所不安全行为和条件的职业和环境健康问题
Pub Date : 2021-12-20 DOI: 10.9734/arrb/2021/v36i1230468
A. Oluyege, K. Ojo
Aim: Many food animal production facilities are sited close to human residence. This research work seeks to establish the occupational and environmental burdens of unsafe acts and conditions in backyard poultry production sites in the area of study in order to validate the compliance level of poultry farmers to common safety regulations. Place and Duration of Study: Microbiology Department, Ekiti State University, Ado-Ekiti, from February 2017 to December 2019. Methodology: A well-structured questionnaire was administered to farm managers and residents within the area of study. Data on poultry management attitudes and history of water use were collected. The coordinates of the poultry sites, natural water bodies, source area and their relative distances were determined using the Geographical System Information Software, Mapit GIS. Fecal droppings from poultry birds were randomly sampled with a sterile swab stick and transferred into a factory-packed polythene bag. The suspension of the fecal droppings was streaked on Eosin Methylene Blue agar plates and incubated at 37°C for 18-24 hours. Waste-water, soil from disposal sites, and poultry feed samples were also collected in sterile universal bottles, serially diluted and cultured. E. coli isolates were characterized using relevant biochemical tests. The modified paper disc-diffusion method was used to determine the isolates’ sensitivity to nine tested antibiotics. The results were interpreted based on the procedures of the clinical and laboratory standard institutes. Results: Majority of the poultry farms under survey, 83% adopted the intensive ranging system of farming while few adopted the free range system. Layers were the most reared, 50%. There was no documented health, safety and regulatory protocols used on all the farms leading to variations in poultry management practices. Accumulated poultry droppings were periodically disposed between 3-4 days into open fields, flowing water bodies and pits. Among the three adopted waste disposal options, disposal into open field was rampant, 67%. Also, some of the poultry farmers, 42% applied the collected poultry droppings as farm yard manure. Family members constitute the major labor force, 92% on the farm. There were contacts between few of the farmers and their clients during routine farm activities. Majority of the farmers, 83.3% were not kitted with commonly-used personal protective equipment while coverall was only used by few. The five natural water bodies found within the area of study were majorly used for agricultural, domestic, and, recreational purposes. There was history of diarrhea in respondents, 12% with exposure to the water bodies. Socio-demographic data show that young, married-males with tertiary education comprise the major farming population. The relative distance of poultry farms to residential site is ≤ 6 meters while the proximity of poultry farms to natural water sources is between 160 meters to 4,596 meters. Antibiotic se
目的:许多食用动物生产设施都设在离人类居住地很近的地方。本研究工作旨在确定研究地区后院家禽生产场所不安全行为和条件的职业和环境负担,以验证家禽养殖户对共同安全法规的遵守程度。学习地点和时间:2017年2月至2019年12月,埃基蒂州立大学微生物系,阿多埃基蒂。方法:对研究区域内的农场经理和居民进行了结构良好的问卷调查。收集了家禽管理态度和用水史的数据。利用地理系统信息软件Mapit GIS确定禽源地、天然水体、源区及其相对距离的坐标。用无菌棉签随机抽取家禽粪便,并将其转移到工厂包装的聚乙烯袋中。将粪便悬浮液涂布于伊红亚甲基蓝琼脂板上,37℃孵育18-24小时。处置场所的废水、土壤和家禽饲料样品也收集在无菌通用瓶中,经过连续稀释和培养。采用相关生化试验对分离的大肠杆菌进行鉴定。采用改良纸片扩散法测定菌株对9种抗生素的敏感性。结果根据临床和实验室标准机构的程序进行解释。结果:被调查的家禽养殖场中,83%采用集约放养方式,少数采用散养方式。蛋鸡饲养最多,占50%。所有农场都没有使用记录在案的健康、安全和监管协议,导致家禽管理实践存在差异。在3-4天内定期将积累的家禽粪便弃置到开阔的田野、流动的水体和坑中。采用的3种废弃物处置方式中,露天处置居多,占67%。此外,42%的家禽养殖户将收集的家禽粪便用作农场粪便。家庭成员构成了主要的劳动力,占农场劳动力的92%。在日常农业活动中,少数农民与其客户有接触。大多数农民(83.3%)没有配备常用的个人防护装备,少数农民使用工作服。在研究范围内发现的五个天然水体主要用于农业、家庭和娱乐用途。应答者有腹泻史,12%与接触水体有关。社会人口统计数据显示,受过高等教育的年轻已婚男性构成了主要的农业人口。家禽养殖场与居民点的相对距离≤6米,家禽养殖场与天然水源的距离在160米~ 4596米之间。抗生素敏感性试验显示,禽粪、禽粪处理场废水和土壤中存在多种耐药菌。细菌对氟喹诺酮类药物、磺胺类药物、四环素类药物、氨基糖苷类药物和青霉素的耐药性较高。结论:对家禽生产场所的不安全行为审计结果表明,公共健康安全取决于人类环境中的水和土壤质量。家禽生产场所固有职业危害的不安全行为和条件是由于健康、安全和环境管理体系不起作用。家禽粪便中的耐抗生素细菌对人类构成生物危害。暴露于这些生物危害使公众容易受到感染。通过审查国家环境污染控制准则和标准,可以改善人类和环境健康。
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引用次数: 0
In vitro effects of Sunset Yellow on Chromosomal Damage and Sister Chromatid Exchanges in Human Peripheral Lymphocytes 日落黄对人外周血淋巴细胞染色体损伤及姐妹染色单体交换的体外影响
Pub Date : 2021-12-16 DOI: 10.9734/arrb/2021/v36i1230466
A. Algarni
Sunset Yellow (SY) is an organic azo dye that is used extensively as a coloring agent in many industries, such as cosmetics, pharmaceuticals ,and foodstuffs. Many studies have conflicting results about the genotoxicity effect of SY. Thus, the purpose of this study was to provide additional data concerning SY genotoxicity in human lymphocytes by using chromosomal aberrations (CAs) and sister chromatid exchanges (SCEs) assay. Four concentrations of Sunset Yellow (1, 5, 20 ,and 50 mg/ml) were used on human lymphocyte cultures. Positive and negative controls were mitomycin C and distilled water, respectively. Compared to the control, SY caused a significant increase in CAs and SCEs frequencies at all concentrations. A total of five types of CAs were observed, such as gaps, fragments, RCF, stickiness,and polyploidy. According to the present results, high concentrations of SY are genotoxic in vitro to cultured human lymphocytes. To determine its full genotoxicity potential, SY should be tested in other test systems.
日落黄(SY)是一种有机偶氮染料,广泛用作许多行业的着色剂,如化妆品,药品和食品。许多研究对SY的遗传毒性作用有相互矛盾的结果。因此,本研究的目的是通过染色体畸变(CAs)和姐妹染色单体交换(SCEs)试验,提供关于SY对人淋巴细胞遗传毒性的额外数据。四种浓度的日落黄(1、5、20和50 mg/ml)用于人淋巴细胞培养。阳性对照为丝裂霉素C,阴性对照为蒸馏水。与对照组相比,在所有浓度下,SY引起CAs和sce频率显著增加。共观察到间隙、片段、RCF、黏性、多倍体等5种类型的ca。根据目前的结果,高浓度的SY对体外培养的人淋巴细胞具有遗传毒性。为确定其全部遗传毒性潜力,应在其他测试系统中测试SY。
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引用次数: 2
Studies on the Nutritional, Mineral Composition, Mineral Ratio and Anti-nutritional Molar Ratio of Six Underutilized Wild Edible Vegetables in Ado-Ekiti, Ekiti State, Nigeria 尼日利亚埃基蒂州Ado-Ekiti六种未充分利用的野生食用蔬菜的营养、矿物质组成、矿物质比例和抗营养摩尔比的研究
Pub Date : 2021-12-16 DOI: 10.9734/arrb/2021/v36i1230467
M. Ayeni, S. Oyeyemi
Aim: Fruits and common vegetables are now becoming too expensive for the poor consumers in Nigeria. The search for cheap, readily available and (locally sourced for the people in need of) nutritious food prompted this research work. Study Design: Six underutilized wild vegetables (Solanum microcarpon, Strichium sparganophora, Crassocephalum crepidiodes, Solanum nigrum, Myrianthus arboreus and Sterculia tragacantha) from Ado- Ekiti, Ekiti State, Nigeria were evaluated for their nutritional, mineral and anti-nutritional potentials. Place and Duration of Study: The collection of the samples were done in the month of December, 2020 in Ado Ekiti, Ekiti State, Nigeria and air dried for three weeks. Methodology: Young shoots of five indigenous vegetables were collected, washed thoroughly, air dried, pulverized and analysed using standard methods of AOAC. Results: The proximate analyses of the vegetables indicated that the moisture content, ash, fat, crude fiber, crude protein and carbohydrates ranged as follows: 6.17-8.85%, 4.73-6.59 %, 2.00-3.13%, 3.89-7.27%, 7.77-12.23% and 63.84-70.61% respectively. The total energy ranged from 1,367.85 to 1,467.85KJ/100g with low Coefficient of Variation (CV%) of 2.22. Mineral contents are of the following order K>Mg>Ca> P>Na>Fe>Zn. The result of the mineral ratio showed that the calculated mineral ratio for Na/K, K/ Na, Ca/P, Ca/Mg, Ca/K, Zn/Cu and [K/(Ca+Mg)] were below the critical level. The calculated mineral safety indexes (MSI) were lower than the tabulated values. The anti-nutrient contents (Cyanide, Saponins, and Oxalate) were below the threshold levels, Conclusion: Low MSI means that the vegetables could not pose health risk when consumed. The low anti-nutrient contents of the samples is an indication that the consumer would not suffer from mineral overload. The nutrition and mineral potentials of these vegetables could suggest their uses as nutritional supplements and are highly promising for food security and sustainability for the populace. 
目的:水果和普通蔬菜现在对尼日利亚贫穷的消费者来说变得太贵了。寻找便宜、容易获得和(为有需要的人在当地采购)有营养的食物促使了这项研究工作。研究设计:对来自尼日利亚埃基蒂州Ado- Ekiti的6种未被充分利用的野菜(微碳茄、sparganophora Strichium、Crassocephalum crepidiodes、Solanum nigrum、Myrianthus arboreus和Sterculia tragacantha)的营养、矿物质和抗营养潜力进行了评估。研究地点和时间:样本收集于2020年12月在尼日利亚埃基蒂州的Ado Ekiti进行,并风干三周。方法:收集5种本地蔬菜的幼芽,彻底清洗,风干,粉碎,并使用AOAC标准方法进行分析。结果:该蔬菜的水分、灰分、脂肪、粗纤维、粗蛋白质和碳水化合物含量分别为6.17 ~ 8.85%、4.73 ~ 6.59%、2.00 ~ 3.13%、3.89 ~ 7.27%、7.77 ~ 12.23%和63.84 ~ 70.61%。总能量范围为1,367.85 ~ 1,467.85KJ/100g,变异系数(CV%)为2.22。矿物含量为K>Mg>Ca> P>Na>Fe>Zn。矿物比计算结果表明,Na/K、K/ Na、Ca/P、Ca/Mg、Ca/K、Zn/Cu和[K/(Ca+Mg)]矿物比均低于临界水平。计算得到的矿质安全指数(MSI)低于表列值。抗营养成分(氰化物、皂苷和草酸盐)含量均低于阈值,结论:低MSI意味着食用蔬菜不会造成健康风险。样品的抗营养成分含量低,表明消费者不会遭受矿物质过量。这些蔬菜的营养和矿物质潜力可以表明它们作为营养补充剂的用途,对民众的粮食安全和可持续性非常有希望。
{"title":"Studies on the Nutritional, Mineral Composition, Mineral Ratio and Anti-nutritional Molar Ratio of Six Underutilized Wild Edible Vegetables in Ado-Ekiti, Ekiti State, Nigeria","authors":"M. Ayeni, S. Oyeyemi","doi":"10.9734/arrb/2021/v36i1230467","DOIUrl":"https://doi.org/10.9734/arrb/2021/v36i1230467","url":null,"abstract":"Aim: Fruits and common vegetables are now becoming too expensive for the poor consumers in Nigeria. The search for cheap, readily available and (locally sourced for the people in need of) nutritious food prompted this research work. \u0000Study Design: Six underutilized wild vegetables (Solanum microcarpon, Strichium sparganophora, Crassocephalum crepidiodes, Solanum nigrum, Myrianthus arboreus and Sterculia tragacantha) from Ado- Ekiti, Ekiti State, Nigeria were evaluated for their nutritional, mineral and anti-nutritional potentials. \u0000Place and Duration of Study: The collection of the samples were done in the month of December, 2020 in Ado Ekiti, Ekiti State, Nigeria and air dried for three weeks. \u0000Methodology: Young shoots of five indigenous vegetables were collected, washed thoroughly, air dried, pulverized and analysed using standard methods of AOAC. \u0000Results: The proximate analyses of the vegetables indicated that the moisture content, ash, fat, crude fiber, crude protein and carbohydrates ranged as follows: 6.17-8.85%, 4.73-6.59 %, 2.00-3.13%, 3.89-7.27%, 7.77-12.23% and 63.84-70.61% respectively. The total energy ranged from 1,367.85 to 1,467.85KJ/100g with low Coefficient of Variation (CV%) of 2.22. Mineral contents are of the following order K>Mg>Ca> P>Na>Fe>Zn. The result of the mineral ratio showed that the calculated mineral ratio for Na/K, K/ Na, Ca/P, Ca/Mg, Ca/K, Zn/Cu and [K/(Ca+Mg)] were below the critical level. The calculated mineral safety indexes (MSI) were lower than the tabulated values. The anti-nutrient contents (Cyanide, Saponins, and Oxalate) were below the threshold levels, \u0000Conclusion: Low MSI means that the vegetables could not pose health risk when consumed. The low anti-nutrient contents of the samples is an indication that the consumer would not suffer from mineral overload. The nutrition and mineral potentials of these vegetables could suggest their uses as nutritional supplements and are highly promising for food security and sustainability for the populace. ","PeriodicalId":8230,"journal":{"name":"Annual research & review in biology","volume":"59 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87488809","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}
引用次数: 0
Effect of Fermentation with Rumen Content on the Feeding Value of Boiled Iron Tree (Prosopis africana) Seedcoat on Haematology and Serum Biochemistry of Broiler Chickens 瘤胃含量发酵对煮铁树种皮饲用价值的影响对肉鸡血液学和血清生化的影响
Pub Date : 2021-12-15 DOI: 10.9734/arrb/2021/v36i1230464
B. Bishop, F. Abang, S. Attah
Aims: The study was conducted to evaluate the effect of inclusion of Prosopis seed coat fermented with rumen content at different levels as energy source on the  serum biochemical composition and heamatological indices of broiler chickens. Study Design:Data collected were subjected to analysis of variance in a completely randomized design. Place and Duration of Study: The study was conducted at the Livestock Teaching and Research Farm of the University of Agriculture Makurdi, Benue State, Nigeria. Between November 2016 and January 2017. Methodology: The study was in two phases; the starter and finisher phase, in each of the phases, there were five dietary groups and fermented Prosopis africana seed coat meal (FPASCM) was included at 0, 10, 15, 20 and 25% to replace maize. The total of two hundred and sixty (260), day- old Zartech broiler chicks were randomly distributed to five dietary treatments with four replicates of 52 chickens per treatment and each replicate had 13 birds. The birds were raised on deep litter and fed ad-libitum and drinking water provided daily and performance was monitored. At the end of the eight week, blood was collected via the wing web for serum and haematological assay. Results: The results of haematological parameters of broiler chickens fed varying levels of fermented Prosopis africana seed coat are presented in Table 3.There were no significant (P>0.05) differences between treatments for parameters measured except for PCV and haemogobin.  The PCV values ranged from 25.00 -28.25% and haemoglobin values ranged from 8.35 -9.40g/dl. It was observed that most of the haematological indices measured fell within the normal reference range values. The results of serum biochemical assay revealed that serum glucose 45.85-107.22 mg/dl varied significantly (P<0.05) among the dietary treatments. Birds served 25% FPSCM had the highest value while those served 15% FPASCM recorded  least value. Conclusion: Based on the observations from this study, it was concluded that FPASCM could be included in the diets of broiler chickens up to 25% without compromising the health of the birds.
目的:本试验旨在评价以不同水平瘤胃内容物发酵的拟豆种皮作为能量源对肉鸡血清生化组成和血液学指标的影响。研究设计:收集的数据采用完全随机设计进行方差分析。研究地点和时间:研究在尼日利亚贝努埃州马库尔迪农业大学畜牧教学和研究农场进行。2016年11月至2017年1月。研究方法:研究分为两个阶段;在发育期和育成期,每期设5个饲粮组,分别用发酵非洲豆种皮粕(FPASCM)替代玉米,添加比例分别为0、10、15、20和25%。选取260只日龄Zartech肉鸡260只,随机分为5个饲粮处理,每个处理设4个重复,每个重复52只鸡,每个重复13只鸡。雏鸟在深窝上饲养,自由饲喂,每日提供饮水,并监测其生产性能。8周结束时,通过翅网采集血液进行血清和血液学检测。结果:饲喂不同水平发酵非洲豆种皮的肉鸡血液学参数结果见表3。除PCV和血红素外,各组间各项指标均无显著差异(P < 0.05)。PCV值为25.00 -28.25%,血红蛋白值为8.35 -9.40g/dl。结果显示,大部分血液学指标均在正常参考值范围内。血清生化分析结果显示,不同饲粮处理的血清葡萄糖45.85 ~ 107.22 mg/dl差异显著(P<0.05)。食用量为25%的FPASCM值最高,而食用量为15%的FPASCM值最低。结论:在不影响肉鸡健康的前提下,FPASCM可在肉鸡日粮中添加25%。
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引用次数: 0
Ethanolic Extract of Whole Unripe Plantain Musa paradisiaca Ameliorates Carbon Tetrachloride-Induced Hepatotoxicity and Nephrotoxicity in Wistar Rat 生车前草乙醇提取物改善四氯化碳诱导的Wistar大鼠肝和肾毒性
Pub Date : 2021-12-15 DOI: 10.9734/arrb/2021/v36i1230465
T. Ogunmoyole, O. D. Johnson, Adewale Akeem Yusuff
Aim: Globally, burden of liver and kidney diseases has been on the increase in recent times. The present study therefore investigates the hepatoprotective and nephroprotective potentials of unripe plantain Musa paradisiaca on CCl4-induced oxidative damage in albino rat. This was with the aim of providing a locally available and potent therapeutic alternative to the conventional drugs used in the management of liver and kidney diseases. Place and Duration of Study: The study was conducted at the Department of Medical Biochemistry, College of Medicine, Ekiti State University, Ado Ekiti between July 2018 and January, 2019.  Methodology: Twenty-five adult male albino rats were placed into seven groups of 5 animals each. Group I animals received distilled water throughout the duration of the experiment, while group II were exposed to CCl4 only. Groups III, IV, V and VI received 3 ml/kg b.w of CCl4 intraperitoneally but were post treated with 50 mg/kg and 100 mg/kg of unripe plantain extract respectively while group seven were post-treated with silymarin by oral gavage. Animals were sacrificed for the excision of the liver and kidney. Activities of creatinine kinase (CK), aspartate aminotransferase (AST), alanine aminotransferase (ALT), alkaline phosphatase (ALP), as well as levels of urea, uric acid, bilirubin and lipid profile were assessed. Tissue antioxidant level of reduced glutathione (GSH) and activities of antioxidant enzymes such as superoxide dismutase (SOD) and catalase (CAT) were also determined. Results: Exposure to CCl4 caused a significant derangement in lipid profile, resulting in the increase in serum triglyceride, total cholesterol and low density lipoprotein (LDL) while high density lipoprotein (HDL) level was diminished. Liver and kidney biomarkers (ALT, AST, ALP, CK, urea, uric acid and bilirubin were also significantly elevated in the serum relative to the control animals following exposure to CCl4.  Activities of antioxidant enzymes in the serum were markedly inhibited by CCl4 exposure.  Treatment with Musa paradisiaca extract caused a dose-dependent restoration of all biochemical parameters determined, while histopathological observation was in agreement with biochemical results. Conclusion: These findings showed that Musa paradisiaca extract exhibited positive modulatory effects on the liver and kidney subjected to oxidative attack, hence, its potential usefulness in the management diseases associated with these organs.
目的:在全球范围内,肝脏和肾脏疾病的负担近年来一直在增加。因此,本研究探讨了生车前草对ccl4诱导的白化大鼠氧化损伤的肝和肾保护作用。这样做的目的是在当地提供一种有效的治疗方法,以替代用于治疗肝脏和肾脏疾病的传统药物。研究地点和时间:该研究于2018年7月至2019年1月在Ado Ekiti Ekiti州立大学医学院医学生物化学系进行。方法:将25只成年雄性白化大鼠分为7组,每组5只。第一组动物在整个实验期间都饮用蒸馏水,而第二组动物只暴露于CCl4。III、IV、V、VI组大鼠腹腔注射CCl4 3 ml/kg b.w,后分别给予50 mg/kg和100 mg/kg生车前草提取物,7组大鼠灌胃水飞蓟素。动物被用来切除肝脏和肾脏。测定各组肌酐激酶(CK)、天冬氨酸转氨酶(AST)、丙氨酸转氨酶(ALT)、碱性磷酸酶(ALP)活性,以及尿素、尿酸、胆红素和血脂水平。测定组织中还原型谷胱甘肽(GSH)的抗氧化水平和抗氧化酶如超氧化物歧化酶(SOD)和过氧化氢酶(CAT)的活性。结果:暴露于CCl4导致血脂谱明显紊乱,导致血清甘油三酯、总胆固醇和低密度脂蛋白(LDL)升高,而高密度脂蛋白(HDL)水平降低。暴露于CCl4后,肝脏和肾脏生物标志物(ALT、AST、ALP、CK、尿素、尿酸和胆红素)在血清中也显著高于对照动物。CCl4暴露显著抑制血清抗氧化酶活性。天竺葵提取物处理后,小鼠各项生化指标均呈剂量依赖性恢复,组织病理学观察与生化结果一致。结论:天麻提取物对氧化损伤的肝脏和肾脏具有积极的调节作用,具有治疗肝脏和肾脏相关疾病的潜力。
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引用次数: 0
Intra-Specific Variability in Whorl Growth-Rate among Land Gastropods with Conispirally-Coiled Shells 具有螺旋盘绕壳的陆生腹足类动物的螺体生长速率的种内变异
Pub Date : 2021-12-14 DOI: 10.9734/arrb/2021/v36i1230463
J. Béguinot
For most conispirally-coiled Gastropods with determinate growth, the geometry of spirally-winding whorls is usually constrained by a strong negative correlation between whorl growth rate and the number of whorls reached at adulthood, as originally reported by the late S.J. Gould. Yet, beyond the tight control of shell-shape at the species level – resulting from this constraint – what about the amplitude of the intra-specific variability of whorl growth-rate, partly contributing to the variability of the overall shell-size at the species level? I address the issue by designing and implementing a new, indirect method for routinely evaluating whorl growth-rate, thereby aiming at considerably saving measurement time, and making it possible to easily achieve repeated measurements across samples large enough to reach statistical significance. This approach was applied to a series of eight common land snail species. The amplitude of intra-specific variability in whorl growth, evaluated this way, proves: (i) being markedly different among the eight investigated species (by a factor that can exceed 2x); (ii) being, yet, high enough, in all cases, to require compensating variations in the adult number of whorls, so as to limit the resulting consequences on the amplitude of the intra-specific variability of adult shell-size. Despite those marked differences in the amplitudes of intra-specific variability of whorl growth-rate among species, no significant relationship was observed between intraspecific variability of whorl growth rate and species-specific shell-shape types (discoidal/globular/elongate) and only weak positive relationship was observed with species-specific typical shell sizes. However, a rather strong positive correlation was found, as expected, between the degree of intra-specific variability of the whorl growth-rate and the degree of intra-specific variability of the number of whorls reached at adulthood (with the yet unexplained exception of one among the eight investigated species).
正如已故的S.J.古尔德最初报道的那样,对于大多数具有确定生长的螺旋盘绕腹足类动物,螺旋盘绕轮的几何形状通常受到轮生长率与成年期达到的轮数之间的强烈负相关的限制。然而,除了在物种水平上对壳形状的严格控制之外——这一限制导致了这种限制——在一定程度上导致了物种水平上总体壳大小的变化的螺体生长速率的种内变异性的幅度又如何呢?为了解决这个问题,我设计并实现了一种新的间接方法,用于常规评估螺旋生长速率,从而大大节省了测量时间,并且可以轻松地在足够大的样本之间进行重复测量,从而达到统计显著性。该方法应用于8种常见的陆地蜗牛。以这种方式评估的种内生长变异性的幅度证明:(i)在8个被调查物种之间存在显著差异(可能超过2倍);(ii)在所有情况下,仍然足够高,需要在成虫的轮数上进行补偿变化,以限制对成虫壳大小的种内变异性幅度的影响。尽管种间螺轮生长速率的种内变异幅度存在显著差异,但螺轮生长速率的种内变异与种特有的壳型(盘状/球形/长形)之间无显著关系,与种特有的典型壳尺寸之间仅存在微弱的正相关关系。然而,正如预期的那样,在轮生长速率的种内变异性程度与成年期达到的轮数的种内变异性程度之间发现了相当强的正相关(在8个被调查物种中有一个尚未解释的例外)。
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引用次数: 1
Long-term Trend in Mean Density of Antarctic Krill (Euphausia superba) Uncertain 南极磷虾(Euphausia superba)平均密度长期趋势不确定
Pub Date : 2021-12-13 DOI: 10.9734/arrb/2021/v36i1230460
Steven G. Candy
Two recent attempts to model the long-term trend in mean density of Antarctic krill in the southwestern sector of the Atlantic using the KRILLBASE dataset using different statistical methods as well as inclusion versus exclusion of data from “non-scientific” nets have resulted in disparate conclusions. The approach that used a linear mixed model (LMM) fitted to the log of mean density, after standardisation was applied to individual net hauls and with means calculated for 12 spatial strata by years between 1976 and 2016, gave a highly statistically significant linear “regional” decline north of 60oS and, to a lesser degree, south of this latitude. The alternative approach that used a ”hurdle” model fitted to the individual net haul data, excluded regional stratification, and excluded non-scientific nets failed to detect an overall significant decline. The method of modelling log transformed means was reappraised and corrected by applying a meta-analytic LMM approach. Additionally, nonlinear smooths in year by region and a smooth in mean “climatological temperature” were included in the LMM. This model showed on average a mostly consistent decline north of 60oS, however, neither trend was significantly different from a no-trend prediction with the trend north of 60oS highly uncertain. Uncertainty of predictions resulted in only weak power to detect a substantial decline of the order of 70% between 1985 and 2005. These model-based inferences neither strongly support nor reject a general hypothesis that there has been a dramatic decline in density of Antarctic krill in the Southwest Atlantic over this period.
最近两次尝试利用KRILLBASE数据集模拟大西洋西南海域南极磷虾平均密度的长期趋势,使用不同的统计方法,以及从“非科学”网中纳入和排除数据,结果得出了不同的结论。该方法使用拟合平均密度对数的线性混合模型(LMM),在对单个净运输应用标准化后,并在1976年至2016年期间按年计算12个空间层的平均值,得出了60度以北的高度统计显着的线性“区域”下降,该纬度以南的下降程度较小。另一种方法是使用“障碍”模型来拟合单个净运输数据,排除区域分层,并排除非科学网,但未能发现总体显着下降。运用元分析LMM方法对对数变换均值建模方法进行了重新评价和修正。此外,LMM还包含了分区域的非线性平滑和平均“气候温度”的平滑。该模型显示60o以北的平均下降基本一致,然而,这两种趋势与无趋势预测都没有显著差异,60o以北的趋势高度不确定。由于预测的不确定性,在1985年至2005年期间,只有微弱的能力检测到70%的大幅下降。这些基于模型的推断既不强烈支持也不反对这一时期西南大西洋南极磷虾密度急剧下降的一般假设。
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引用次数: 1
Post-dipping in Milk Production, Composition, and Quality 浸后奶的生产、成分和质量
Pub Date : 2021-12-13 DOI: 10.9734/arrb/2021/v36i1230461
Elizabeth Simões do Amaral Alves, João Manoel Da Silva, Micheline Thais dos Santos, Y. Montaldo, Paula Cibelly Vilela Da Silva, T. M. D. Santos, E. S. de Medeiros
This study aimed to evaluate the influence of post-dipping on milk production, composition, and quality of cows with subclinical mastitis. Samples of mast milk from two different dairy farms were analyzed in two moments: before the post-dipping implantation and after 30 days, the samples were conditioned to the refrigeration temperature in an isothermal box and sent to the laboratory for the following analyzes: California Mastitis Test (CMT), Somatic Cell Count (SCC), Fat, Protein, Lactose, Total Solids (TS), Non-Fat Solids (NFS) and microbiological tests, as well as individual milk weighing. The experimental design was completely randomized and arranged in a split-plot scheme, submitted to analysis of variance (ANOVA) by the F test. The post-dipping practice during 30 days resulted in the means and standard deviation of the analyzes of the studied variables, where the values of SCC, CMT, and microbiological score profile were statistically significant. The highest etiological agent found was Staphylococcus spp. The fat and lactose profile increased in both farms, but there was no significant difference. Protein increased in both farms, but in farm I, there was no significant difference and in farm 2, there was a significant difference. Total Solids, Non-greasy solids, and weighing had a percentage increase, but the means of weight did not differ statistically. The post-dipping technique was an effective measure in the control of subclinical mastitis and brings health benefits to the mammary gland.
本研究旨在评价浸乳后对亚临床乳腺炎奶牛产奶量、成分和品质的影响。对两个不同奶牛场的乳乳样品分别在浸乳前和浸乳后30天内进行分析,将样品置于等温箱中冷藏,并送到实验室进行以下分析:加州乳腺炎测试(CMT)、体细胞计数(SCC)、脂肪、蛋白质、乳糖、总固体(TS)、非脂肪固体(NFS)和微生物测试,并对牛奶进行称重。试验设计完全随机化,采用裂图方案,采用F检验进行方差分析(ANOVA)。在30天的浸药后实践中,研究变量分析的平均值和标准差,其中SCC, CMT和微生物评分谱的值具有统计学意义。发现的最高病原是葡萄球菌,两个养殖场的脂肪和乳糖含量均有所增加,但差异不显著。两个农场的蛋白质含量都有所增加,但在农场1没有显著差异,在农场2有显著差异。总固体、非油腻固体和体重有百分比的增加,但体重的平均值没有统计学上的差异。后浸法是控制亚临床乳腺炎的有效措施,对乳腺健康有益。
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引用次数: 0
Molecular Characterization of Virus Infecting Momordica charantia Linn and the Application of Trichoderma viride as Biocontrol Agent in Baccocco Cross River State, Nigeria 尼日利亚克罗斯河州苦瓜感染病毒的分子特征及绿色木霉防治剂的应用
Pub Date : 2021-12-13 DOI: 10.9734/arrb/2021/v36i1230462
D. Etim, N. I. Okon
Momordica charantia Linn, commonly called bitter-melon or ampalaya, is a vigorous, tendril-bearing, frost tender, annual vine of the cucurbitacae family reported to play significant role in health and nutrition. Chlorotic spot symptoms were observed on this plant during a visit to some Gardens in Baccocco Cross River State, Nigeria in 2021. The aim of this study was to identify the virus infecting this plant and investigate the ability of Trichoderma viride to control the virus. Infected leaf samples of M. charantia were collected and maintained on young seedlings of cucumber through mechanical inoculation which was further used to test the ability of Trichoderma viride as biocontrol agent, the sample was further tested against RT-PCR. Result obtained from Gene sequence analysis revealed 87 % nucleotide sequence identity with Morroccan watermelon mosaic virus. This is the first report of MWMV infecting M. charantia in Nigeria. The result further showed that Trichoderma viride was very effective in the control of virus the pathogen.
苦瓜(Momordica charantia Linn),通常被称为苦瓜或ampalaya,是葫芦科的一种活力旺盛、卷须、霜冻嫩的一年生藤本植物,据报道对健康和营养有重要作用。在2021年访问尼日利亚Baccocco Cross River州的一些花园期间,在该植物上观察到褪绿斑点症状。本研究的目的是鉴定侵染该植物的病毒,并探讨绿色木霉对病毒的控制能力。采用机械接种的方法,采集白僵菌侵染后的叶片样品,保存在黄瓜幼苗上,进一步检测绿色木霉作为防菌剂的能力,并对样品进行RT-PCR检测。基因序列分析结果显示,摩洛哥西瓜花叶病毒与摩洛哥西瓜花叶病毒同源性达87%。这是尼日利亚首次报告MWMV感染charantia分枝杆菌。结果进一步表明,绿色木霉对病原菌病毒有很好的防治效果。
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引用次数: 0
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