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Evaluation of geothermal energy resources in parts of southeastern sedimentary basin, Nigeria 尼日利亚东南部沉积盆地部分地区地热能资源评价
Pub Date : 2021-05-03 DOI: 10.4314/IJS.V23I1.17
I. Okiyi, S. Ibeneme, E. Obiora, S. Onyekuru, A. I. Selemo, M. Olorunfemi
Depth (CPD)), and estimate geothermal gradient and heat flow required for the evaluation of the geothermal resources of the study area. Results from spectral analysis showed depths to the top of the magnetic source ranging between 0.45 km and 1.90 km; centroid depths of 4 km 7.87 km and CPD of between 6.15 km and 14.19 km. The CPD were used to estimate geothermal gradients which ranged from 20.3°C/km to 50.0°C/km
深度(CPD)),估算研究区地热资源评价所需的地温梯度和热流。光谱分析结果表明,磁源顶部深度在0.45 ~ 1.90 km之间;质心深度为4公里,7.87公里,CPD在6.15至14.19公里之间。利用CPD估算了20.3 ~ 50.0℃/km的地温梯度
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引用次数: 2
Biological synthesis of copper nanoparticles and its antimicrobial potential on selected bacteria food-borne pathogens 纳米铜的生物合成及其对食源性致病菌的抑菌作用
Pub Date : 2021-05-03 DOI: 10.4314/IJS.V23I1.2
H. A. Aderolu, O. Aboaba, A. Aderolu, K. Abdulwahab, A. Suliman, U. Emmanuel
In this study, copper nanoparticle (CuNPs) was synthesized using green technology and the CuNPs was characterized with Energy Dispersive X-ray (EDX) which confirmed the presence of copper. Scanning Electron Microscopy (SEM) showed the morphology and the average size was calculated to be 2.47 ± 1 nm. The functional groups were identified by Fourier transform infrared spectroscopy (FTIR) and this revealed that OH functional group was anchored on the surface of the nanoparticles. Antimicrobial activity of the synthesizedCuNPs was investigated at varying concentrations (0.25, 0.5, 1, 2, 3, 4, 5, 6 and 7 mg/ml) dissolved in 100% dimethyl sulfoxide (DMSO). It was tested against five food borne pathogenic organisms: Salmonella typhimurium, Methicillin resistant Staphylococcus aureus  (MRSA), Enterococcus faecalis, Shigella flexneri, and Acinetobacter baumannii using the Kirby Bauer disc diffusion and agar well   method. The results showed that the antimicrobial zone of inhibition increased with an increase in concentration of the CuNPs, an  average diameter of 25 mm at 7 mg/ml, 22 mm at 5 mg/ml and an average diameter of 13 mm at 2 mg/ml of 100% DMSO.  Nanoparticles at 0.25 mg/ml and 0.5 mg/ml concentration failed to produce any clear zone across all the test organisms while only Enterococcus faecalis was sensitive with a clear zone diameter of 10 mm at 1 mg/ml CuNPs. MRSA has the least susceptibility: 9 mm clear zone diameter at 2 mg/ml and at 7 mg/ml clear zone diameter of 20 mm, relative to other tested organisms. The test organisms were not sensitive to the following conventional antibiotics: Cefuroxime, Ceftazidime, Erythromycin, Amoxicillin/Clavulanic acid and Cloxacillin, but only sensitive to Gentamicin, Ceftriaxone and Ofloxacin. MRSA on the other hand was not sensitive to all the eight antibiotics tested but susceptible to the CuNPs. The results obtained from this study indicated that copper nanoparticles can be used in the food industry to control both Gram positive and negative bacteria tested. Keywords: Synthesis, Copper nanoparticles, Antimicrobial activities, Bacteria.
本研究采用绿色技术合成了铜纳米粒子,并用能量色散x射线(EDX)对其进行了表征,证实了铜的存在。扫描电镜(SEM)显示其形貌,计算出其平均尺寸为2.47±1 nm。傅里叶变换红外光谱(FTIR)鉴定了羟基官能团锚定在纳米颗粒表面。在不同浓度(0.25、0.5、1、2、3、4、5、6和7 mg/ml)的100%二甲亚砜(DMSO)中,研究了合成的cunps的抑菌活性。采用Kirby Bauer盘扩散法和琼脂孔法对鼠伤寒沙门菌、耐甲氧西林金黄色葡萄球菌(MRSA)、粪肠球菌、福氏志贺氏菌和鲍曼不动杆菌5种食源性致病菌进行了检测。结果表明,CuNPs的抑菌区随着浓度的增加而增大,在7 mg/ml浓度下平均直径为25 mm,在5 mg/ml浓度下平均直径为22 mm,在2 mg/ml浓度下平均直径为13 mm。0.25 mg/ml和0.5 mg/ml浓度的纳米颗粒在所有受试生物中均未产生任何透明带,而只有粪肠球菌在1 mg/ml浓度的纳米颗粒中敏感,其透明带直径为10 mm。MRSA的易感性最低:在2mg /ml时,透明区直径为9mm,在7mg /ml时,透明区直径为20mm。试验菌对头孢呋辛、头孢他啶、红霉素、阿莫西林/克拉维酸、氯西林等常规抗生素不敏感,仅对庆大霉素、头孢曲松、氧氟沙星敏感。另一方面,MRSA对所有8种抗生素均不敏感,但对CuNPs敏感。研究结果表明,铜纳米颗粒可用于食品工业中革兰氏阳性和阴性细菌的控制。关键词:合成,纳米铜,抗菌活性,细菌
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引用次数: 3
Influence of smoking and natural preservatives on shelf – life and microbial quality of Clarias gariepinus during storage 烟熏和天然防腐剂对鸡尾Clarias储存期和微生物品质的影响
Pub Date : 2021-05-03 DOI: 10.4314/IJS.V23I1.14
S. Olusola
This study investigated the shelf – life and microbial quality of smoked Clarias gariepinus using Onion Bulb (OB), Holy Basil (HB) and Turmeric Rhizome (TR) as preservatives during 56 days storage. Sixteen C. gariepinus (1- 1.5kg) were distributed to four experimental containers: Control, TR2, OB3, and HB4 and the experiment were carried out in triplicates. Clarias gariepinus were smoked in a smoking kiln at 40o C- 60o C and 120-150 C for 6 and 18 hours respectively. Biochemical parameters, organoleptic assessment, and microbial analysis were carried out. Data were analyzed using ANOVA at P= 0.05. The result showed that the crude protein of C. gariepinus washigher in the treated groups compared to the control. Also, the result shows that the biochemical parameters, organoleptic assessment and the microbial loads in smoked C. gariepinus were reduced in the OB, HB, and TR than the control at 1 day, 28 days and 56 days storage respectively. It can be concluded that the natural plants may enhance the shelf life, consumer acceptability, and inhibit the growth of the microbial pathogen in smoked fish. Keywords: Catfish, Onion bulb, Holy basil, Microbial loads, Turmeric, Preservatives
以洋葱球茎(OB)、圣罗勒(HB)和姜黄根茎(TR)为保鲜剂,研究了熏制Clarias gariepinus的保鲜期和微生物品质。将16尾1 ~ 1.5kg的加里宾鳗鲡分配到对照、TR2、OB3和HB4 4个试验容器中,每3个重复进行试验。在烟窑中分别于400℃~ 600℃和120℃~ 150℃熏制6 h和18 h。进行生化参数、感官评价和微生物分析。数据分析采用方差分析,P= 0.05。结果表明,处理组加里滨鸡粗蛋白含量高于对照组。结果表明,在贮藏1 d、28 d和56 d时,熏熏后的肉鸡在OB、HB和TR中的生化指标、感官评价和微生物负荷均低于对照。由此可见,天然植物可以提高熏鱼的保质期,提高消费者的接受度,并抑制熏鱼中微生物病原体的生长。关键词:鲶鱼,洋葱球茎,圣罗勒,微生物负荷,姜黄,防腐剂
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引用次数: 2
Potential medicinal plant remedies and their possible mechanisms against COVID-19: A review 潜在的药用植物疗法及其抗COVID-19的可能机制综述
Pub Date : 2021-05-03 DOI: 10.4314/IJS.V23I1.16
C. Ugwah-Oguejiofor, I. Adebisi
Severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) outbreak was first reported in Wuhan, a city in Hubei Province of China in December, 2019 and is known to be responsible for the novel coronavirus disease (COVID-19). COVID-19 was declared a pandemic in March, 2020 and since then, it has caused a number of deaths in over 200 countries around the world. Extensive researches have continued in the search of effective vaccines or drug compounds against SARS-CoV-2 and a total of 64 vaccines are currently in clinical trials with 12 currently approved for use by different regulatory bodies, depending on the country. Since the outbreak of SARS-CoV-2, many countries have utilised traditional herbal medicines alongside conventional drugs for the treatment of infected patients. In this review, traditional medicines used to prevent or treat SARS-CoV-2 infection are listed along with the plant parts as used by the traditional healers. Additionally, the possible mechanisms responsible for this preventive or therapeutic outcome are also identified and listed. Our literature search was conducted using Google Scholar, PubMed, Scopus and WHO website. Unpublished reports such asdissertations and theses are not included. Plant parts including roots, leaves, flowers, seeds and so on have been used in the treatment of COVID-19. These traditional medicinal herbs may exert their anti-COVID-19 activity by direct inhibition of the virus replication or entry. Some may act by blocking the ACE-2 receptor, SARS-CoV helicase, Type II Transmembrane Serine Protease (TMPRSS2) and which are required by SARS-CoV-2 in order to infect human cells. Others act by inhibiting the SARSCoV-2 life-cycle related proteins, namely chymotrypsin-like cysteine protease (3CL-pro) and Papain-like protease (PL-pro). Medicinal plants are promising alternative medicines for the treatment or prevention of SARS-CoV-2 infection. Further researches, are needed to decipher their active components and structures which may suggest clues for the development of drugs against this novel coronavirus. Keywords: Severe Acute Respiratory Syndrome (SARS-CoV-2), COVID-19, medicinal plants, plant parts, mechanism of action, pandemic,
2019年12月,中国湖北省武汉市首次报告了严重急性呼吸综合征冠状病毒-2 (SARS-CoV-2)疫情,并被认为是新型冠状病毒病(COVID-19)的罪魁祸首。2019冠状病毒病于2020年3月被宣布为大流行,自那时以来,它已在全球200多个国家造成多人死亡。为寻找针对SARS-CoV-2的有效疫苗或药物化合物而进行的广泛研究仍在继续,目前共有64种疫苗处于临床试验阶段,其中12种目前已获不同监管机构批准使用,具体取决于国家。自SARS-CoV-2爆发以来,许多国家在使用常规药物的同时使用传统草药治疗受感染患者。在这篇综述中,列出了用于预防或治疗SARS-CoV-2感染的传统药物以及传统治疗师使用的植物部位。此外,还确定并列出了导致这种预防或治疗结果的可能机制。我们的文献检索是通过Google Scholar、PubMed、Scopus和WHO网站进行的。未发表的报告,如论文和论文不包括在内。包括根、叶、花、种子等植物部位已被用于治疗COVID-19。这些传统药材可能通过直接抑制病毒复制或进入来发挥抗covid -19活性。有些可能通过阻断ACE-2受体、SARS-CoV解旋酶、II型跨膜丝氨酸蛋白酶(TMPRSS2)起作用,这些是SARS-CoV-2感染人类细胞所必需的。其他通过抑制SARSCoV-2生命周期相关蛋白,即凝乳胰蛋白酶样半胱氨酸蛋白酶(3CL-pro)和木瓜蛋白酶样蛋白酶(PL-pro)起作用。药用植物是治疗或预防SARS-CoV-2感染的有希望的替代药物。需要进一步的研究来破译它们的活性成分和结构,这可能为开发针对这种新型冠状病毒的药物提供线索。关键词:严重急性呼吸综合征(SARS-CoV-2), COVID-19,药用植物,植物部位,作用机制,大流行
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引用次数: 4
Synthesis, characterization and antibacterial activity of mixed ligand complexes of Nicotinamide and 2,2′-Bipyridine 烟酰胺与2,2′-联吡啶混合配体配合物的合成、表征及抗菌活性研究
Pub Date : 2021-05-03 DOI: 10.4314/IJS.V23I1.18
O. Akinyele, E. Fakola, R. George, L. M. Durosinmi
solubility studies, magnetic susceptibility, percentage metal analysis, UV-Vis spectroscopy, IR spectroscopy and conductivity measurements. The observed metal analysis were in agreement with the theoretical values. The magnetic susceptibility data showed that all the complexes were paramagnetic with values ranging from 1.50 to 4.92 B.M, except [Zn(NA)(Bipy)Cl H O] which is diamagnetic. The conductivity values of 96.20, 123.20 and 2 2 -1 2 -1 130.80 Ω cm mol Cu(II), Co(II) and Mn(II) complexes respectively reveal their 1:1 electrolytic nature, while
溶解度研究,磁化率,金属百分比分析,紫外可见光谱,红外光谱和电导率测量。观察到的金属分析与理论值一致。磁化率数据表明,除[Zn(NA)(Bipy)Cl h2o]为反磁性外,其余配合物均为顺磁性,其磁化率在1.50 ~ 4.92 B.M之间。Cu(II)、Co(II)和Mn(II)配合物的电导率分别为96.20、123.20和2 2 -1 2 -1 130.80 Ω cm mol
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引用次数: 2
Phytoavailablility and fractionation of cadmium and lead in vegetable farm soils in Ilorin, north-central, Nigeria 尼日利亚中北部伊洛林蔬菜农场土壤中镉和铅的植物有效性和分异
Pub Date : 2021-05-03 DOI: 10.4314/IJS.V23I1.4
P. O. Ben-Uwabor, G. Olawepo, Clement O Ogunkunle, O. Fatoba
Heavy metal dynamics, bioavailability and fractionation are of great importance to measure soil toxicity, in soil. However, reports showed that not much has been done to evaluate these parameters in vegetable farm soils in Ilorin metropolis. These parameters aid in assessing and extent of heavy metal viability in soil. Therefore, soils were collected from major vegetable farms in Ilorin metropolis, sorted, Thus, this study investigated the bioavailable Cd and Pb and their fractionation in vegetable farm soils in Ilorin metropolis. These experiments were conducted by , sequential extraction and Atomic Absorption Spectrophotometry, alongside analysis of some key soil properties. The results showed that the soil pH ranged from 6.62±0.04 to 7.18±0.03, organic matter 2.05 target heavy metals in the sampling areas were potentially bioavailable with phytoavailable concentration ranges of . The target heavy metals showed a high viability of the soluble and exchangeable form in most soils and in both seasons which would greatly contribute to their availability to plant uptake and soil toxicity. There is also a threat of oxidization of the potentially available Cd and Pb in other forms due to pH ranges of most of the studied soils. Therefore, vegetable farm soils in Ilorin metropolis are polluted with Cd and Pb and may have high risk of causing human health problems when vegetables grown on the soils are consumed; which calls for remediation of most of the soils. , 031 Ife Journal of Science vol. 23, no. 1 (2021) INTRODUCTION Heavy metals abound naturally in soil environment, as a result of processes of weathering of parent materials at levels that are regarded as trace and rarely toxic substance, and also from human anthropogenic activities (Herawati et al, 2010). Of the heavy metals that abound, cadmium (Cd) and lead (Pb) are common and widely studied contaminants because of their spectrum of use in production of lead-acid batteries, lead-based paints, automobiles, oil refineries, and antiknock in petrol (Ying et al., 2013). In terms of environmental concentration, Pb is the heavy metal closest to the level in which toxic signs manifest than any other substance (Iwegbue et al., 2013). Heavy metal distribution, dynamics and transport in soil depend significantly on their chemical forms (Debnárová and Doleţa, 2010). Once in the soil, heavy metals are adsorbed by initial fast reactions (minutes, hours), followed by slow adsorption reactions (days, years) and are, therefore, redistributed into different chemical forms with varying bioavailability, mobility and toxicity (Deng et al., 2012). Reports had shown that not all the heavy metals in the soil are readily available to plant but may become available under some environmental influences or changes such as pH, redox potential, cation exchange capacity, organic matter content and moisture content of the soil (Yadawe, 2011). The fraction of a total heavy metal content that is available for plant uptake in the
土壤中重金属的动态、生物有效性和分异对土壤毒性的测定具有重要意义。然而,报告显示,在伊洛林大都市的蔬菜农场土壤中,对这些参数进行评估的工作并不多。这些参数有助于评估土壤中重金属活力及其程度。因此,本研究收集了伊洛林市主要蔬菜农场的土壤,并进行了分类,研究了伊洛林市蔬菜农场土壤中生物有效态Cd和Pb及其分异。这些实验是通过顺序萃取和原子吸收分光光度法进行的,同时分析了一些关键的土壤性质。结果表明:样区土壤pH值为6.62±0.04 ~ 7.18±0.03,有机质为2.05,靶重金属为潜在生物可利用性,植物可利用浓度为。目标重金属在大多数土壤和两个季节都表现出较高的可溶性和交换性活力,这将极大地促进它们对植物吸收的有效性和土壤毒性。由于所研究的大多数土壤的pH值范围,还存在其他形式的潜在可利用Cd和Pb被氧化的威胁。因此,伊洛林市蔬菜农场土壤受到Cd和Pb的污染,食用在土壤上种植的蔬菜可能会造成人体健康问题的高风险;这就需要对大部分土壤进行修复。《生命科学》vol. 23 no. 31重金属在土壤环境中自然存在,这是母质风化过程的结果,其水平被视为微量和很少有毒的物质,也来自人类的人为活动(Herawati etal ., 2010)。在大量存在的重金属中,镉(Cd)和铅(Pb)是常见且被广泛研究的污染物,因为它们在铅酸电池、含铅涂料、汽车、炼油厂和汽油抗爆剂的生产中广泛使用(Ying等人,2013)。就环境浓度而言,铅是最接近出现有毒迹象水平的重金属,比任何其他物质都要多(Iwegbue etal ., 2013)。重金属在土壤中的分布、动态和运输在很大程度上取决于它们的化学形态(Debnárová和Doleţa, 2010)。一旦进入土壤,重金属通过最初的快速反应(几分钟、几小时)被吸附,随后是缓慢的吸附反应(几天、几年),因此被重新分配为不同的化学形式,具有不同的生物利用度、流动性和毒性(Deng etal ., 2012)。有报告表明,并非土壤中的所有重金属都容易被植物利用,但在某些环境影响或变化下,如pH值、氧化还原电位、阳离子交换容量、有机质含量和土壤水分含量,重金属可能会被植物利用(Yadawe, 2011)。土壤中可供植物吸收的重金属总含量的比例在很大程度上取决于金属存在的化学形式(Lokeshwari和Chandrappa, 2012)。因此,了解土壤中不同形式的重金属是很重要的,这将有助于评估毒性程度或污染水平以及重金属的修复策略(Kabata-Pendias, 2004)。最大的https://dx.doi.org/10.4314/ijs.v23i1.4
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引用次数: 0
Adsorption of methylene blue on corncob charcoal: Thermodynamic studies 玉米芯炭吸附亚甲基蓝的热力学研究
Pub Date : 2021-05-03 DOI: 10.4314/IJS.V23I1.13
A. A. Fodeke, O. J. Ayejuyone
131 Ife Journal of Science vol. 23, no. 1 (2021) INTRODUCTION Dyes have found great use in several human activities such as textile, paper, paint, cosmetics, additives in food and many other uses. A large amount of these dyes find their way into water bodies where they cause harm for aquatic life and make the water unfit for human consumption. In the search of a cheap and sustainable means of removing dye pollutants, several researchers have embarked on experiments aimed at finding methods, optimum conditions and materials that can be used for efficient dye removal (Malik et al., 2007; Suteu et al., 2011; Garg et al., 2004; Adegoke et al., 2015; Amodu et al., 2015). Removal of dyes and metallic ions from wastewater has stimulated significant interest in the use of synthetic polymers. Materials such as polyphynylamine (Amodu et al . , 2015), p o l y ( c y c l o t r i p h o s p h a z e n e c o 4 , 4 sulfonyldiphenol) nano tubes (Ayad et al., 2012; Chen et al., 2014) and carbon based materials from agricultural wastes (banana peel, cassava peel, rice bran, periwinkle shell, corncob and palm kernel husk) have been employed in water purification (Kumur et al., 2008; Bello et al., 2008; Rajeshwarisivaraj et al., 2001). While much of the work in the past had been dedicated to finding the most suitable kinetic and adsorption model for fitting data from adsorption experiments (with the hope of ascertaining the mechanism of adsorption), the suitability of the equilibrium adsorption model had often been predicated on the goodness of the fit of a given adsorption isotherm model used in fitting the experimental data. Little data is available on the systematic studies of the relationship between fitting model and the thermodynamics of adsorption of adsorbates on adsorbents. Where such studies were carried out, adsorption properties of the adsorbates and adsorbents are often not related quantitatively or semi-quantitatively to the thermodynamic quantities obtained. To remove ambiguity that may arise from the shortcomings described above, we undertake to: (i) determine how adsorption of MB on corncob charcoal are affected by pH at the point of zero charge of the adsorbent and also above and below it; (ii) estimate the effect which acid treatment of corncob charcoal had on its adsorption properties compared to the untreated corncob; (iii) https://dx.doi.org/10.4314/ijs.v23i1.13
131《生命科学》第23卷第1期。染料在纺织、造纸、油漆、化妆品、食品添加剂和许多其他用途等人类活动中都有很大的用途。大量的这些染料进入水体,对水生生物造成危害,使水不适合人类饮用。为了寻找一种廉价和可持续的去除染料污染物的方法,一些研究人员已经开始进行旨在寻找方法、最佳条件和材料的实验,这些方法、条件和材料可用于有效去除染料(Malik et al., 2007;Suteu et al., 2011;Garg et al., 2004;Adegoke et al., 2015;Amodu et al., 2015)。从废水中去除染料和金属离子引起了人们对合成聚合物使用的极大兴趣。材料如多苯胺(阿莫度等)。, 2015), p / o / o / o / o / o / o / o / o / o / o / o / o / o / o / o / o / o / o / o / o / o / o / o / o / o / o / o / o纳米管(Ayad等,2012;Chen et al., 2014)和来自农业废弃物(香蕉皮、木薯皮、米糠、长春花壳、玉米芯和棕榈仁壳)的碳基材料已被用于水净化(Kumur et al., 2008;Bello et al., 2008;Rajeshwarisivaraj et al., 2001)。虽然过去的大部分工作都致力于寻找最合适的动力学和吸附模型来拟合吸附实验数据(希望确定吸附机制),但平衡吸附模型的适用性通常是基于用于拟合实验数据的给定吸附等温线模型的拟合程度。关于拟合模型与吸附剂对吸附剂的吸附热力学关系的系统研究资料很少。在进行此类研究时,吸附剂和吸附剂的吸附特性通常与所获得的热力学量没有定量或半定量的关系。为了消除上述缺点可能引起的歧义,我们承诺:(i)确定在吸附剂零电荷点以及上面和下面的pH值如何影响玉米芯木炭对MB的吸附;(ii)与未经处理的玉米芯相比,评估酸处理玉米芯木炭对其吸附性能的影响;(3) https://dx.doi.org/10.4314/ijs.v23i1.13
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引用次数: 0
Prevalence of otitis media in children attending a Primary Health Care Center in Samaru, Zaria, Nigeria 在尼日利亚扎里亚萨马鲁初级卫生保健中心就诊的儿童中耳炎患病率
Pub Date : 2021-05-03 DOI: 10.4314/IJS.V23I1.12
H. Atta, F. Umar
Otitis media is an inflammatory disease of the mucosal lining of the middle ear. It occurs more frequently in children due to the shorter and more horizontal eustachian tube in their ears. The focus of this study is determining the prevalence of otitis media in children aged 6 months – 10 years attending a primary health care facility in Samaru, Zaria, Nigeria. Fifty swabs from ear discharge and imparted wax were obtained from the study subjects regardless of whether they were presenting with symptoms of otitis media or not. Information on certain symptoms, as well as demographic and risk factors was obtained through the use of questionnaires. A prevalence of 54% of otitis media was obtained in this study. The following bacterial species were isolated: Pseudomonas aeruginosa (25.7%), Escherichia coli (25.7%), Klebsiella pneumoniae (14.3%), Staphylococcus aureus (14.3%), Proteus mirabilis (8.6%), Coagulase negative Staphylococci (8.6%) and Proteus vulgaris (3.7%). The infection was observed to be higher in children in the age range, six months to two years. Risk factors such as the use of cotton buds in cleaning the ear, posture of the child during breast-feeding and not being exclusively breast-fed were shown to be very prominent among the children studied. Antibiotic susceptibility tests revealed that among the Gram negative bacteria isolated, Pseudomonas aeruginosa and Klebsiella pneumoniae were resistant to more than two antibiotics. Coagulase negative Staphylococcus was resistant to all the antibiotics except Ceftriaxone, Streptomycin and Cefuroxime. On the other hand, Staphylococcus aureus was susceptible to all the antibiotics tested with the exception of Cefuroxime, Ceftriaxone and Ampiclox. Therefore, it is recommended that antibiotic susceptibility testing be conducted before treatment of otitis media in children. The importance of exclusive breast-feeding and good personal hygiene should be emphasized to nursing mothers. Key words: Otitis media, Children, Bacteria, Antibiotics, Zaria
中耳炎是中耳粘膜的一种炎症性疾病。由于儿童耳中的咽鼓管较短且较水平,故在儿童中更为常见。本研究的重点是确定在尼日利亚扎里亚萨马鲁一家初级卫生保健机构就诊的6个月至10岁儿童中耳炎的患病率。无论受试者是否出现中耳炎症状,均从其耳液和耳垢中提取50个拭子。通过使用调查问卷获得了关于某些症状以及人口统计学和风险因素的信息。在这项研究中,中耳炎的患病率为54%。检出铜绿假单胞菌(25.7%)、大肠杆菌(25.7%)、肺炎克雷伯菌(14.3%)、金黄色葡萄球菌(14.3%)、奇异变形杆菌(8.6%)、凝固酶阴性葡萄球菌(8.6%)和寻常变形杆菌(3.7%)。在6个月至2岁的儿童中,感染率较高。在被研究的孩子中,使用棉签清洁耳朵、母乳喂养时孩子的姿势以及不是纯母乳喂养等风险因素被证明是非常突出的。抗生素药敏试验显示,分离的革兰氏阴性菌中,铜绿假单胞菌和肺炎克雷伯菌对2种以上抗生素耐药。凝固酶阴性葡萄球菌对除头孢曲松、链霉素和头孢呋辛外的所有抗生素均耐药。另一方面,金黄色葡萄球菌对除头孢呋辛、头孢曲松和氨苄氯外的所有抗生素均敏感。因此,建议在儿童中耳炎治疗前进行抗生素药敏试验。应向哺乳期母亲强调纯母乳喂养和良好个人卫生的重要性。关键词:中耳炎,儿童,细菌,抗生素,Zaria
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引用次数: 1
Assessment of morpho-variability between bruchid tolerant AND SUSCEPTIBLE cowpea (Vigna unguiculata L. Walp.) accessions 豇豆(Vigna unguiculata L. Walp.)耐寒和易感品种间形态变异的评估
Pub Date : 2021-05-03 DOI: 10.4314/IJS.V23I1.10
O. Amusa, L. Ogunkanmi
Cowpea bruchid is a major constraint to cowpea production. Easy identification of resistant/tolerant accessions to bruchid infestation has been a major challenge in bruchid resistant breeding programmes. Hence, the study was aimed to evaluate variations in some morphological characters between some bruchid resistant/tolerant and susceptible cowpea accessions, correlating them with their bruchid tolerance status in the hope of identifying a pointer character(s) that can facilitate easy identification of bruchid tolerant among cowpea germplasm. Sixty accessions were collected and evaluated for bruchid tolerance. Accessions were then grouped into bruchid susceptible and bruchid tolerant. These accessions were planted in Randomized Complete Block Design with ten replicates. Morphological differences between groups were evaluated accordingly. Of the sixty accessions evaluated, fifty-two were susceptible while eight were bruchid tolerant. No qualitative differences were observed between bruchid susceptible and tolerant groups, however significant differences were observed in quantitative characters which include terminal leaflet length, terminal leaflet/width ratio, leaf petiole length, terminal leaflet petiole length (TLPL), leaf petiole length, pod length (PDL), pod width, total number of pods per plant, seed length (SDL), seed width (SDW), seed thickness (SDTK) and 100 seed weight (100SDW). Bruchid tolerance was significantly positively correlated with seed characters which include, SDL (r = 0.798, p < 0.01); SDW (r = 0.798, p < 0.01); SDTK (r = 0.758, p < 0.01); 100SDW (0.830, p < 0.01) and significantly negatively correlated with TLPL and PDL (p < 0.05). These characters can provide easy identification of bruchid tolerant among cowpea germplasm, hence requires further investigations.
豇豆糙皮是制约豇豆生产的主要因素。容易识别对野鼠侵害具有抗性/耐受性的品种一直是野鼠抗性育种计划的主要挑战。因此,本研究旨在评价一些抗/耐和敏感豇豆种质间某些形态性状的差异,并将这些性状与豇豆种质间的耐糙疮状况进行关联,以期找到一种能够便于豇豆种质间耐糙疮鉴定的指标性状。收集了60份材料,并对其进行了耐磨性评价。然后将品种分为易感和耐糙毛两组。采用随机完全区组设计,每组10个重复。据此评估各组间形态学差异。在60份评价材料中,52份易感,8份耐糙毛。野蓟敏感组和耐药组在顶小叶长、顶小叶/宽比、叶柄长、顶小叶长(TLPL)、叶柄长、荚果长(PDL)、荚果宽、单株荚果总数、种子长(SDL)、种子宽(SDW)、种子厚(SDTK)和百粒重(100SDW)等数量性状上差异显著。野蓟耐受性与种子性状呈极显著正相关(r = 0.798, p < 0.01);SDW (r = 0.798, p < 0.01);SDTK (r = 0.758, p < 0.01);100SDW (0.830, p < 0.01)与TLPL、PDL呈显著负相关(p < 0.05)。这些性状可为豇豆种质间的耐糙草性鉴定提供方便,有待进一步研究。
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引用次数: 2
Preservation of antioxidant defense system by Morin in bicalutamide-induced rat testicular toxicity 莫里素对比卡鲁胺致大鼠睾丸毒性的抗氧化防御系统的保护作用
Pub Date : 2021-05-03 DOI: 10.4314/IJS.V23I1.11
E. Olayinka, A. Ore, O. Olotu, V. U. Ogbuji, O. A. Adeyemo, Olaniyi Solomon Ola
Bicalutamide (BCT) is a potent anti-androgen chemotherapeutic drug indicated for prostate cancer. However, BCT is known to cause oxidative stress and impairment of male reproductive function. Whereas Morin (MOR), a flavonoid has been found to be a potent antioxidant, with free radical scavenging capacity. This study investigated the protective effect of MOR on BCT-induced testicular toxicity in Wistar rats. Twenty-four male albino rats were randomized into four groups (n=6/group). Group I which served as control received distilled water. Group II, received 3 mg/kg body weight (bwt) BCT orally (per os); group III received 3 mg/kg/day BCT p.o. plus 100 mg/kg/d MOR p.o. and group IV received 100 mg/kg/d MOR p.o. All treatments lasted for 14 days, thereafter, animals were sacrificed and epididymis and testis were collected for sperm and biochemical analyses. The result revealed that BCT treatment caused a significant increase in abnormal sperm morphology. Sperm production, sperm count, motility and viability were significantly reduced when compared with control (p<0.05). Similarly, testicular superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx),glutathione S-transferase (GST) and acid phosphatase (ACP) activities, as well as ascorbic acid and GSH levels were significantly reduced in the BCT- treated animals when compared to control (p<0.05). Conversely, testicular alkaline phosphatase (ALP), gamma glutamyl transferase (GGT) and lactate dehydrogenese (LDH) activities as well as malondialdehyde (MDA) levels of BCT-treated animals  increased significantly relative to control (p<0.05). However, co-treatment with Morin ameliorated BCT-induced alterations in sperm parameters, ascorbic acid, GSH and MDA levels, as well as LDH, SOD, CAT, GST, GPX, ACP, ALP and GGT activities. Data obtained from this study suggest that Morin protected against altered sperm parameters and testicular oxidative stress caused by BCT. Keywords: Bicalutamide, Anti-androgen, Testis, Oxidative stress, Morin, Antioxidant, Rat
比卡鲁胺(BCT)是一种有效的抗雄激素化疗药物,适用于前列腺癌。然而,已知BCT会引起氧化应激和男性生殖功能损害。而Morin (MOR),一种类黄酮已被发现是一种有效的抗氧化剂,具有清除自由基的能力。本研究探讨了MOR对bct致Wistar大鼠睾丸毒性的保护作用。24只雄性白化大鼠随机分为4组(n=6/组)。第一组作为对照组,接受蒸馏水。II组,口服3 mg/kg体重(bwt) BCT;III组给予BCT 3 mg/kg/d + MOR 100 mg/kg/d, IV组给予MOR 100 mg/kg/d,疗程14 d,处死动物,取附睾和睾丸进行精子和生化分析。结果显示,BCT治疗导致异常精子形态显著增加。与对照组相比,精子产量、精子数量、活力和活力显著降低(p<0.05)。BCT处理动物睾丸超氧化物歧化酶(SOD)、过氧化氢酶(CAT)、谷胱甘肽过氧化物酶(GPx)、谷胱甘肽s -转移酶(GST)和酸性磷酸酶(ACP)活性以及抗坏血酸和GSH水平均显著低于对照组(p<0.05)。相反,bct处理动物睾丸碱性磷酸酶(ALP)、谷氨酰转移酶(GGT)、乳酸脱氢酶(LDH)活性和丙二醛(MDA)水平显著高于对照组(p<0.05)。然而,与Morin共同处理可改善bct诱导的精子参数、抗坏血酸、GSH和MDA水平以及LDH、SOD、CAT、GST、GPX、ACP、ALP和GGT活性的改变。本研究获得的数据表明,桑葚胚素对BCT引起的精子参数改变和睾丸氧化应激有保护作用。关键词:比卡鲁胺,抗雄激素,睾丸,氧化应激,桑辣素,抗氧化剂,大鼠
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引用次数: 0
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Ife Journal of Science
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