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Expression of heat shock and apoptosis genes in riverine buffalo (Bubalus bubalis) cumulus–oocyte complexes during in-vitro maturation under thermal stress conditions 热应激条件下体外成熟过程中河水牛(Bubalus bubalis)积液-卵母细胞复合体中热休克和凋亡基因的表达
Q2 Pharmacology, Toxicology and Pharmaceutics Pub Date : 2023-07-01 DOI: 10.4103/epj.epj_16_23
B. Khalil, Salah El-Assal, Nasser Ghanem
Background and objectives Thermal stress arising from climate change is a crucial issue that threatens the livestock worldwide. It has various and wide range of effects on livestock’s reproductive performance. Buffalo is a main livestock in the Egyptian agricultural sector, and its’ susceptibility to the ambient temperature negatively affects its reproductive performance. Thus, it is important to study how the thermal stress affects the bubaline oocytes at both cytological and molecular levels. The current study aimed to investigate the effects of thermal stress for two different periods on the maturation of bubaline oocytes under in vitro conditions and screen the expression of various genes responsible for some mechanisms related to thermal stress alleviation, cumulus expansion, and apoptosis. Materials and methods Cumulus–oocyte complexes (COCs) were retrieved from buffalo ovaries and divided into three groups (C, T1, and T2) and underwent in-vitro maturation after being examined for quality. During the first 2/6 h of in-vitro maturation, good-quality COCs were exposed to 40.5°C and thereafter continued their maturation at 38.5°C. The COCs were denuded from the surrounding cumulus cells 22–24 h after maturation and were either preserved for RNA isolation in −80°C freezer or fixed for molecular maturation evaluation using Hoechst staining. The total RNA was isolated from three biological replicates of the three COC groups (C, T1, and T2) using Pico-pure RNA isolation kit, followed by cDNA synthesis for the genes of interest using real-time PCR (qPCR). Statistical analysis was performed for the obtained results for discussion and conclusion. Results The nuclear maturation declined more in the oocytes exposed to longer period of thermal stress than those exposed to short period of thermal stress. The longer the oocytes exposed to thermal stress, the higher was the expression of heat shock genes. The expression of heat shock genes was more expressed in cumulus cells in different groups than their corresponding oocytes. Moreover, expression of apoptosis-inducing gene (BAX) increased more in COCs exposed to long period of thermal stress than those in short period and control groups. This effect was also visible more in cumulus cells than in their corresponding oocytes. Although the cumulus expansion showed no significant change in pattern, the cumulus marker genes showed reverse relation with the period of the thermal stress, suggesting alteration in extracellular matrix proteins. Conclusion Heat stress affected negatively the nuclear maturation of buffalo oocytes by downregulation of cumulus expansion (PTX3, TNFAIP6, and HAS2) genes and upregulation of proapoptotic (BAX) gene under in vitro conditions. In response to this harmful situation, the cumulus cells surrounding oocytes undergo complex molecular mechanisms to adapt to the thermal shock by upregulation of heat shock transcripts (HSF1, HSF2, HSP90, and HSP70) and antiapoptotsis gene (BCL2) to
背景和目标 气候变化引起的热应激是威胁全球牲畜的一个关键问题。它对牲畜的繁殖性能有各种广泛的影响。水牛是埃及农业部门的主要牲畜,它对环境温度的敏感性对其繁殖性能产生了负面影响。因此,研究热应激如何在细胞学和分子水平上影响水牛卵母细胞非常重要。本研究旨在研究两个不同时期的热应激对体外条件下泡卵母细胞成熟的影响,并筛选与热应激缓解、积层扩展和细胞凋亡相关机制的各种基因的表达情况。材料和方法 从水牛卵巢中提取囊胚-卵母细胞复合体(COCs),将其分为三组(C、T1 和 T2),在检查质量后进行体外成熟。在体外成熟的前 2/6 小时,质量好的 COC 暴露在 40.5°C 的温度下,之后在 38.5°C 的温度下继续成熟。成熟 22-24 小时后,COC 从周围的积层细胞中剥离出来,保存在 -80°C 冰箱中进行 RNA 分离,或用 Hoechst 染色进行固定,以评估分子成熟度。使用 Pico-pure RNA 分离试剂盒从三个 COC 组(C、T1 和 T2)的三个生物重复序列中分离出总 RNA,然后使用实时 PCR(qPCR)合成相关基因的 cDNA。对所得结果进行统计分析,以进行讨论并得出结论。结果 与暴露于短时间热应激的卵母细胞相比,暴露于较长时间热应激的卵母细胞的核成熟度下降幅度更大。暴露于热应激时间越长的卵母细胞,热休克基因的表达量越高。与相应的卵母细胞相比,热休克基因在不同组别积层细胞中的表达量更高。此外,与短时间组和对照组相比,长时间暴露于热应激的 COC 中凋亡诱导基因(BAX)的表达量增加得更多。与相应的卵母细胞相比,这种影响在积层细胞中也更为明显。虽然积层细胞的扩增模式没有明显变化,但积层细胞标记基因与热应激时间呈反向关系,表明细胞外基质蛋白发生了改变。结论 热胁迫对水牛卵母细胞的核成熟产生了负面影响,在体外条件下,水牛卵母细胞的积聚膨胀(PTX3、TNFAIP6 和 HAS2)基因下调,促凋亡(BAX)基因上调。为了应对这种有害情况,卵母细胞周围的积层细胞经历了复杂的分子机制,通过上调热休克转录本(HSF1、HSF2、HSP90 和 HSP70)和抗凋亡基因(BCL2)来适应热休克,从而提供抗热应激保护,维持卵母细胞的活力。
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引用次数: 0
Growth, yield and volatile oil of Pelargonium graveolens as affected by spraying of moringa leaves extract under different irrigation intervals 不同灌溉间隔下喷洒辣木叶提取物对天竺葵生长、产量和挥发油的影响
Q2 Pharmacology, Toxicology and Pharmaceutics Pub Date : 2023-07-01 DOI: 10.4103/epj.epj_40_23
Shaimaa I. M. Elsayed, Samah El-Sayed, M. Mohamed, A. Abdalla
Background Essential oil of Pelargonium graveolens plant (Geraniaceae family) is one of the most significant essential oils produced in Egypt for the domestic market and abroad. Plant extracts have been demonstrated to promote plant development by increasing the efficiency with which nutrients are used and by reducing the impact of different biotic or abiotic stresses on plants. Water regime is one of the great important factors that affect plant growth, oil production and the availability and supply of soil moisture not only governed the rate and type of growth but also commanded the availability of plant nutrients. Objective The aim of this work was to choose the most suitable irrigation intervals with the best concentration of moringa leaf extract to obtain strong growth characteristics and a high oil yield and quality of Pelargonium graveolens under drip irrigation system. Materials and methods This study was carried out in the Experimental Research Station of National Research Centre with a factorial experiment in complete block design contains 9 treatments which are the interaction of three irrigation treatments (every 2 days, 3 days and every 4 days) with three levels of moringa leaf extracts (MLE) as foliar application (0, 0.6 and 0.9%) for two cuts during the two successive seasons of 2020 and 2021. Results and conclusion The plants were irrigated every 4 days and sprayed with MLE at concentration 0.9% illustrated positive effect on growth parameters, chemical composition, herb yield per plant (g) and per ha. (ton) as well as essential oil yield. Regarding the effect on essential oil composition the GC-MS analysis revealed that MLE treatment improved the volatile oil constituents and showed that citronellol, α-eudesmol and cis-geraniol are the main components for essential oil of Pelargonium graveolens herb for two cuts.
背景天竺葵精油(天竺葵科)是埃及为国内市场和国外市场生产的最重要的精油之一。事实证明,植物提取物可以提高养分的利用效率,减少各种生物或非生物压力对植物的影响,从而促进植物的生长发育。水分制度是影响植物生长和产油量的重要因素之一,土壤水分的可用性和供应量不仅决定了植物的生长速度和类型,还决定了植物养分的可用性。本研究的目的是选择最合适的灌溉间隔,并配以最佳浓度的辣木叶提取物,以获得滴灌系统下天竺葵强劲的生长特性和较高的产油量及质量。材料和方法 本研究在国家研究中心的实验研究站进行,采用完全区组设计的因子实验,包含 9 个处理,即三种灌溉处理(每 2 天、每 3 天和每 4 天)与三种浓度的辣木叶提取物(MLE)叶面喷施(0%、0.6% 和 0.9%)的交互作用,在 2020 年和 2021 年连续两季中喷施两次。结果和结论 植物每 4 天灌溉一次,喷洒浓度为 0.9%的 MLE,对生长参数、化学成分、每株(克)和每公顷(吨)药草产量以及精油产量均有积极影响。关于对精油成分的影响,气相色谱-质谱分析表明,MLE 处理改善了挥发油成分,并表明香茅醇、α-桉叶油醇和顺式橙花二醇是两次喷洒的天竺葵精油的主要成分。
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引用次数: 0
Effect of algae and yeast on the production of essential oil and some active constituents in rosemary 藻类和酵母对迷迭香精油和一些活性成分生产的影响
Q2 Pharmacology, Toxicology and Pharmaceutics Pub Date : 2023-07-01 DOI: 10.4103/epj.epj_17_23
R. Fouad, H. Fouad, E. Aziz, Osama Nofal, A. Rezk, A. El-Nasharty, E. Omer
Background Rosemary is an important medicinal plant and one of the main aromatic spices in the world. Nowadays, it is very important to use natural substances such as algae and yeast in the green agriculture to increase quantity and quality of crops, in addition to preserving environment from the harms of using chemicals in the agriculture. Objective The study aimed to investigate growth, yield, and active constituents of rosemary under foliar spraying of different concentrations of both algae and yeast extracts. Materials and methods The experiment was performed during the two successive seasons 2019 and 2020 in completely randomized blocks design and consisted of seven treatments: two biostimulants with three levels of each factor, in addition to the control (tap water). Algae extract was sprayed with concentrations of 0.5, 1, and 2 g/l, whereas yeast concentrations were 5, 10, and 20 g/l. The growth parameters, total phenolics, antioxidant activity, essential oil percentage, yield, and its main constituents were studied. Results and conclusion The main components of essential oil were found to be endo-borneol followed by (+)-2-bornanone. The growth, yield, total phenolics, antioxidant activity, essential oil, and the main components of rosemary increased with all used concentrations of algae and yeast extracts compared with control. These increments reached their maximum with application of algae at 1 and 2 g/l and yeast extract at 10 and 20 g/l. In general, spraying yeast extract resulted in the highest average of growth, yield, and chemical constituents of rosemary, and the best parameters were obtained by spraying yeast at 20 g/l. It is recommended to spray rosemary with yeast extract at a dose of 20 g/l to obtain the best plant herbal yield, essential oil, total phenolic content, and antioxidant activity.
背景 迷迭香是一种重要的药用植物,也是世界上主要的芳香香料之一。如今,在绿色农业中使用藻类和酵母等天然物质来提高农作物的数量和质量,以及保护环境免受农业中使用化学物质的危害是非常重要的。研究目的 研究在叶面喷洒不同浓度的藻类和酵母提取物的情况下迷迭香的生长、产量和活性成分。材料和方法 试验在 2019 年和 2020 年连续两季进行,采用完全随机区组设计,包括七个处理:除对照(自来水)外,还有两种生物刺激剂,每个因子有三个水平。藻提取物的喷洒浓度分别为 0.5、1 和 2 克/升,而酵母浓度分别为 5、10 和 20 克/升。研究了生长参数、总酚、抗氧化活性、精油百分比、产量及其主要成分。结果和结论 发现精油的主要成分是内龙脑,其次是 (+)-2 -龙脑酮。与对照组相比,迷迭香的生长、产量、总酚类物质、抗氧化活性、精油和主要成分都随着海藻和酵母提取物浓度的增加而增加。藻类提取物浓度为 1 和 2 克/升,酵母提取物浓度为 10 和 20 克/升时,这些增量达到最大值。总的来说,喷洒酵母提取物可使迷迭香的平均生长量、产量和化学成分达到最高水平,而喷洒 20 克/升酵母提取物可获得最佳参数。建议用 20 克/升剂量的酵母提取物喷洒迷迭香,以获得最佳的植物草本产量、精油、总酚含量和抗氧化活性。
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引用次数: 0
Multiple targets modulation of Bcl-2/CD1, caspase-3 and refinement of AKT/ERK signalling by sorafenib in hepatocellular carcinoma in rats; comprehensive outlook 索拉非尼在大鼠肝细胞癌中对 Bcl-2/CD1、caspase-3 和 AKT/ERK 信号的多靶点调节;全面展望
Q2 Pharmacology, Toxicology and Pharmaceutics Pub Date : 2023-07-01 DOI: 10.4103/epj.epj_37_23
M. Hamzawy, Laila A Rahsed, Sayed Mizar
Background Hepatocellular carcinoma (HCC) is the commonly diagnosed cancer among the three top ranked cancer induced mortality in cancer patients worldwide. A tyrosine kinase inhibitor sorafenib has been used as systemic therapy with a demonstrated survival benefit in HCC. Objectives The present work was conducted to investigate the multiple targets that may be involved in the action of sorafenib in treatment of HCC and development of drug resistance. Materials and methods Four groups of Swiss albino rats were assigned for 12 weeks treatment as the following: group (I) untreated control, group (II): rats received Diethyl Nitrosamine(DEN) (200 mg/kg, i.p)+Carbon Tetra Chloride (CCl4)(3 ml/kg, sc) every week for the first eight weeks, group (III): daily treatment with sorafenib (10 mg/kg, p.o.) for last 4 weeks, group (IV) sorafenib treatment after DEN + CCl4 treatment. Blood samples, and liver tissues were removed for collection to perform biochemical analysis (alanine aminotransferase (ALT), Aspartate aminotransferase (AST), alpha fetoprotein (AFP), B-cell lymphoma 2 (Bcl-2), cyclin D1 (CD1), nuclear factor kappa light chain enhancer of activated B cells (NF-kB), caspase-3, and gene expression of AKT, and ERK 1/2, as well as histological examinations. Results and conclusion Administration of diethyl nitrosamine and carbon tetra chloride showed severe changes in all measured parameters and histological photomicrographs. Daily treatment with sorafenib markedly decreased B-cell lymphoma 2 (Bcl-2), cyclin D1 (CD1), nuclear factor kappa light chain enhancer of activated B cells (NF-kB) accompanied by improvement of active caspase-3. Sorafenib succeeded in restoring the gene expression of ERK 1/2 and AKT level and refinement of histological patterns in animals induced with DEN and CCL4. Sorafenib interrupts various cell communication pathways that control cancer progression, angiogenesis, and cell survival. Sorafenib regulates the AKT/ERK signaling pathway in HCC. study highlights the importance of investigating other therapeutic targets that may help combat sorafenib resistance in relation to different DNA repair mechanisms.
背景 肝细胞癌(HCC)是一种常见的癌症,在全球癌症患者因癌症导致的死亡率中位居前三位。酪氨酸激酶抑制剂索拉非尼已被用作全身治疗,并已证明对 HCC 患者的生存有益。本研究旨在探讨索拉非尼治疗 HCC 时可能涉及的多个靶点以及耐药性的产生。材料和方法 将四组瑞士白化大鼠分配为以下几组,进行为期 12 周的治疗:组(I)为未治疗对照组;组(II):前八周每周接受亚硝胺二乙酯(DEN)(200 毫克/千克,静注)+四氯化 碳(CCl4)(3 毫升/千克, sc)治疗;组(III):最后四周每天接受索拉非尼(10 毫克/千克,p.o.)治疗;组(IV)在接受 DEN + CCl4 治疗后接受索拉非尼治疗。采集血样和肝组织进行生化分析(丙氨酸氨基转移酶(ALT)、天门冬氨酸氨基转移酶(AST)、甲胎蛋白(AFP)、B细胞淋巴瘤 2(Bcl-2)、细胞周期蛋白 D1(CD1)、活化 B 细胞的核因子卡巴轻链增强子(NF-kB)、Caspase-3、AKT 和 ERK 1/2的基因表达)以及组织学检查。结果和结论 施用亚硝胺二乙酯和四氯化碳会导致所有测量参数和组织学显微照片发生严重变化。索拉非尼的日常治疗显著降低了 B 细胞淋巴瘤 2(Bcl-2)、细胞周期蛋白 D1(CD1)、活化 B 细胞的核因子卡巴轻链增强子(NF-kB),同时改善了活性 caspase-3。索拉非尼成功地恢复了ERK 1/2和AKT的基因表达水平,并改善了用DEN和CCL4诱导的动物的组织学形态。索拉非尼能中断控制癌症进展、血管生成和细胞存活的各种细胞通讯途径。索拉非尼调节HCC中的AKT/ERK信号通路。该研究强调了研究其他治疗靶点的重要性,这些靶点可能有助于对抗与不同DNA修复机制有关的索拉非尼耐药性。
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引用次数: 0
Metallo β- lactamase producing pseudomonas aeruginosa: a worrisome situation to handle 金属β-内酰胺酶产生铜绿假单胞菌:一个令人担忧的情况处理
Q2 Pharmacology, Toxicology and Pharmaceutics Pub Date : 2023-07-01 DOI: 10.4103/epj.epj_12_23
Manisha Rajguru, S. Sande, Amit Khekade
Pseudomonas aeruginosa is ubiquitous and very commonly found in hospital settings. In individuals with weakened immune systems, it can cause a number of ailments, inclusive of lung pneumoniae, gastrointestinal infections, keratitis, otitis media, and bacteremia. It is multi drug–resistant organism which is a worrisome situation. Multi-drug resistance is due to various factors like enzyme production, target mutation, expression of aminoglycoside-modifying enzymes (acetyltransferases, phosphotransferases) mediating aminoglycoside resistance, biofilm formation, but, among all of these, carbapenemases being one of most clinically significant. The most clinically significant carbapenemases are the Metallo β-lactamases (IMP, VIM, SPM, NDM, AIM and GIM genes). Understanding the epidemiology, resistance mechanism, molecular features, and for infection management and to prevent a potential global health crisis, techniques for identifying Carbapenem-Resistant-Pseudomonas aeruginosa (CRPA) are essential. For this review article, initial peer-review of publications from the various search engines (‘Google search engine’, ‘Science direct’, ‘Pubmed’, ‘Google Scholar’, ‘Cross references’ and ‘Scopus’) yielded a total of 97 papers. After reviewing the abstracts of the papers, 37 were eliminated and 60 were retained. Full text reading was undertaken to assess the quality of the articles, which resulted in the exclusion of 39 publications. After final peer-review screening, 17 publications were included in the study.
铜绿假单胞菌无处不在,在医院环境中很常见。在免疫系统较弱的个体中,它可以引起许多疾病,包括肺炎、胃肠道感染、角膜炎、中耳炎和菌血症。它是一种多重耐药菌,这是一个令人担忧的情况。多重耐药是由多种因素引起的,如酶的产生、靶点突变、介导氨基糖苷类修饰酶(乙酰转移酶、磷酸转移酶)的表达、生物膜的形成等,但其中碳青霉烯酶是临床上最重要的因素之一。临床意义最大的碳青霉烯酶是金属β-内酰胺酶(IMP、VIM、SPM、NDM、AIM和GIM基因)。了解流行病学,耐药机制,分子特征,感染管理和预防潜在的全球健康危机,鉴定碳青霉烯抗性铜绿假单胞菌(CRPA)的技术是必不可少的。在这篇综述文章中,对来自不同搜索引擎(“b谷歌搜索引擎”、“Science direct”、“Pubmed”、“谷歌Scholar”、“Cross references”和“Scopus”)的出版物进行初步同行评议,共产生97篇论文。在审查论文摘要后,37篇被淘汰,60篇被保留。全文阅读是为了评估文章的质量,结果排除了39份出版物。经过最终的同行评审筛选,17份出版物被纳入研究。
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引用次数: 0
Exopolysaccharide production from agro-industrial wastes by lactic acid bacteria isolated from silage 从青贮饲料中分离的乳酸菌从农工废弃物中生产胞外多糖
Q2 Pharmacology, Toxicology and Pharmaceutics Pub Date : 2023-07-01 DOI: 10.4103/epj.epj_63_23
Ahmed R Henawy, A. Abdelhadi, Asmaa Halema, Refae Refae, Olfat Barakat
Background and Objectives Lactic acid bacteria (L.A.B.) can produce exopolysaccharides (EPSs) using agricultural and industrial waste materials. This approach can prevent the harmful disposal and buildup of these wastes in the environment in addition to producing valuable products. Thirteen LAB-producing EPS isolates were selected, and the similarity and distance indices were determined between them through Rep-PCR DNA fingerprinting, and molecularly identified LAB from silage samples. Evaluation of the ability of the isolated strains to produce exopolysaccharides was carried out, in addition to the optimization of the polysaccharides from renewable resources. Materials and methods LAB-producing EPS isolates were molecularly identified by the 16S rRNA gene sequencing and deposited their DNA sequences to NCBI. EPS production using the examined 13 strains was carried out on MRS as a standard production medium and ranged between 1.53 and 7.53 g/l. Then, the highest significant EPS-producing strains i.e., Lacticaseibacillus paracasei strain LAB 64, Lacticaseibacillus rhamnosus strain LAB 160, and Lacticaseibacillus rhamnosus strain LAB 192 were further examined for EPS production from the agro-industrial wastes sugarcane molasses, salted cheese whey, and their mixture. Results and conclusion The maximum EPS production by the three strains was obtained in a mixture of molasses: whey (1/1 v/v). Calcium carbonate addition to the production mixture significantly improved EPS production in almost all cases and it is important to neutralize the media. Moreover, increasing the mixture sugar concentration of the fermentation mixture from 2% to 5% enhanced EPS production by all strains. In this regard, a 2-fold increment in EPS production was achieved by the Lactic. rhamnosus strain LAB 160 22.39 g/l. The extraction and analysis of the EPS product were carried out using both FT-IR and HPLC compared to an EPS standard. FTIR and HPLC analysis confirmed the polymer as an α-glucan, which was identified as dextran through a comparison between its retention time and the retention time of the dextran standard.
背景和目的乳酸菌(L.A.B.)可以利用农业和工业废料生产胞外多糖。这种方法除了可以生产有价值的产品外,还可以防止这些废物在环境中的有害处理和堆积。选择13株产乳酸菌的EPS分离株,通过Rep-PCR-DNA指纹图谱测定它们之间的相似性和距离指数,并从青贮饲料样品中对乳酸菌进行分子鉴定。除了优化来自可再生资源的多糖外,还对分离菌株产生胞外多糖的能力进行了评估。材料和方法通过16S rRNA基因测序对产生LAB的EPS分离株进行分子鉴定,并将其DNA序列保存到NCBI中。使用检测的13株菌株在MRS作为标准生产培养基上进行EPS生产,范围在1.53至7.53之间 g/l。然后,从农业工业废物甘蔗糖蜜、腌奶酪乳清及其混合物中进一步检测了产生EPS的最高显著菌株,即副干酪乳酸杆菌菌株LAB 64、鼠李糖乳酸杆菌菌株LAB 160和鼠李糖乳杆菌菌株LAB192。结果与结论三株菌株在糖蜜与乳清(1/1 v/v)。在几乎所有情况下,向生产混合物中添加碳酸钙都显著提高了EPS的产量,并且中和介质很重要。此外,将发酵混合物的混合糖浓度从2%提高到5%,提高了所有菌株的EPS产量。在这方面,乳酸菌的EPS产量增加了2倍。鼠李糖菌株LAB 160 22.39 g/l。与EPS标准品相比,使用FT-IR和HPLC对EPS产物进行提取和分析。FTIR和HPLC分析证实该聚合物为α-葡聚糖,通过将其保留时间与葡聚糖标准的保留时间进行比较,确定其为葡聚糖。
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引用次数: 0
Solid-state fermentation and optimization of cellulase production using local fungal isolate 利用本地分离真菌进行固态发酵并优化纤维素酶的生产
Q2 Pharmacology, Toxicology and Pharmaceutics Pub Date : 2023-07-01 DOI: 10.4103/epj.epj_30_23
Maha Basha, Y. Shetaia, Fathy Mehaya, Fatma Abdelzaher
Background Cellulase is the most employed industrial enzyme in biological conversion of many cellulosic wastes. In this work, economic cellulase production by fungi in solid-state fermentation (SSF) by using solid wastes of medicinal plants was studied. Optimization of growth conditions for production of cellulase was the main target of this study. Objective The current study aimed to isolate and screen fungal isolates that have the ability to produce enzymes to degrade solid wastes of medicinal plant process and optimization of growth factors that affect cellulase production. Materials and methods Thirty-five fungal isolates were isolated from different sources by plating and screened for their cellulase activities using Czapek–Dox broth medium amended with 1% cellulose. Cellulase production by tested fungal isolates was carried out through utilization of olive (Olea europaea), black seeds (Nigella sativa), and castor bean (Ricinus communis) cakes in SSF. Optimization of the cellulase productivity was performed by Plackett–Burman design (PBD) and Box–Behnken design. Results and conclusion Out of the isolated 35 fungi, only 12 (34%) produced cellulase in SSF using olive, black seeds (Nigella), and castor bean cakes. Out of these fungal isolates, only 4, that is, no. 1, 7, 10, and 17 were superior in reducing sugar production from olive cakes (13.04, 15.61, 17.03, and 12.85 mg/ml), respectively. While four fungal isolates no. (1, 7, 7, and 10) were active producers of reducing sugars from black seeds (15.45, 18.96, 20, and 18.08 mg/ml), respectively. Only a fungal isolate no. 7 gave high reducing sugars (15.34 mg/ml) in castor cake SSF. The most potent fungal isolate (no. 10) produced 20 mg/ml of reducing sugars using black seed cakes as substrate for SSF. The potential fungal isolate was identified as Aspergillus terreus (OQ085169) based on the extracted fungal DNA that was amplified by PCR using specific internal-transcribed spacer primer (ITS1/ITS4). The PCR products were sequenced and compared with the other related sequences in GenBank (NCBI). The screening of seven factors using PBD showed that only three variables: pH, incubation time, and aeration rate (rpm) affected significantly cellulase production. Box–Behnken design was used to estimate the optimal level of the selected variables based on the results of the PBD. All variables increased significantly cellulase using A. terreus (OQ085169). The P value was very low (0.0207) that indicated the significant, high correlation between the predicted and actual values (R2=0.98), this indicating 98% of the variation in the cellulase activity was owing to the selected independent variables.
背景 纤维素酶是许多纤维素废物生物转化过程中使用最多的工业酶。本研究利用药用植物固体废弃物,研究了真菌在固态发酵(SSF)中生产纤维素酶的经济性。本研究的主要目标是优化生产纤维素酶的生长条件。目的 本研究旨在分离和筛选有能力生产降解药用植物固体废弃物酶的真菌分离物,并优化影响纤维素酶生产的生长因子。材料和方法 从不同来源通过平板法分离出 35 种真菌,并使用添加了 1%纤维素的 Czapek-Dox 肉汤培养基对其纤维素酶活性进行筛选。通过在 SSF 中利用橄榄(Olea europaea)、黑籽(Nigella sativa)和蓖麻(Ricinus communis)饼,测试了真菌分离物生产纤维素酶的情况。通过普拉克特-伯曼设计(PBD)和方框-贝肯设计对纤维素酶生产率进行了优化。结果与结论 在分离出的 35 种真菌中,只有 12 种(34%)在使用橄榄、黑籽(Nigella)和蓖麻饼的 SSF 中产生了纤维素酶。在这些真菌分离物中,只有 4 个真菌分离物,即 1 号、7 号、10 号和 17 号,在从橄榄饼中产生还原糖方面具有优势(分别为 13.04、15.61、17.03 和 12.85 毫克/毫升)。而四种真菌分离物(1、7、7 和 10)则是黑籽还原糖的积极生产者(分别为 15.45、18.96、20 和 18.08 毫克/毫升)。只有一种真菌分离物 No.只有 7 号真菌分离物在蓖麻饼 SSF 中产生了较高的还原糖(15.34 毫克/毫升)。最有效的真菌分离物(10 号)使用黑籽饼作为 SSF 的底物,产生了 20 毫克/毫升的还原糖。根据提取的真菌 DNA,使用特异的内部转录间隔引物(ITS1/ITS4)进行 PCR 扩增,鉴定出潜在的真菌分离物为赤曲霉(OQ085169)。对 PCR 产物进行了测序,并与 GenBank(NCBI)中的其他相关序列进行了比较。利用 PBD 对七个因素进行筛选后发现,只有三个变量:pH 值、培养时间和通气速率(rpm)对纤维素酶的产量有显著影响。根据 PBD 的结果,采用盒-贝肯设计来估计所选变量的最佳水平。使用 A. terreus (OQ085169),所有变量都明显增加了纤维素酶的产量。P 值非常低(0.0207),表明预测值和实际值之间存在显著的高度相关性(R2=0.98),这表明纤维素酶活性的 98% 的变化是由所选的自变量造成的。
{"title":"Solid-state fermentation and optimization of cellulase production using local fungal isolate","authors":"Maha Basha, Y. Shetaia, Fathy Mehaya, Fatma Abdelzaher","doi":"10.4103/epj.epj_30_23","DOIUrl":"https://doi.org/10.4103/epj.epj_30_23","url":null,"abstract":"Background Cellulase is the most employed industrial enzyme in biological conversion of many cellulosic wastes. In this work, economic cellulase production by fungi in solid-state fermentation (SSF) by using solid wastes of medicinal plants was studied. Optimization of growth conditions for production of cellulase was the main target of this study. Objective The current study aimed to isolate and screen fungal isolates that have the ability to produce enzymes to degrade solid wastes of medicinal plant process and optimization of growth factors that affect cellulase production. Materials and methods Thirty-five fungal isolates were isolated from different sources by plating and screened for their cellulase activities using Czapek–Dox broth medium amended with 1% cellulose. Cellulase production by tested fungal isolates was carried out through utilization of olive (Olea europaea), black seeds (Nigella sativa), and castor bean (Ricinus communis) cakes in SSF. Optimization of the cellulase productivity was performed by Plackett–Burman design (PBD) and Box–Behnken design. Results and conclusion Out of the isolated 35 fungi, only 12 (34%) produced cellulase in SSF using olive, black seeds (Nigella), and castor bean cakes. Out of these fungal isolates, only 4, that is, no. 1, 7, 10, and 17 were superior in reducing sugar production from olive cakes (13.04, 15.61, 17.03, and 12.85 mg/ml), respectively. While four fungal isolates no. (1, 7, 7, and 10) were active producers of reducing sugars from black seeds (15.45, 18.96, 20, and 18.08 mg/ml), respectively. Only a fungal isolate no. 7 gave high reducing sugars (15.34 mg/ml) in castor cake SSF. The most potent fungal isolate (no. 10) produced 20 mg/ml of reducing sugars using black seed cakes as substrate for SSF. The potential fungal isolate was identified as Aspergillus terreus (OQ085169) based on the extracted fungal DNA that was amplified by PCR using specific internal-transcribed spacer primer (ITS1/ITS4). The PCR products were sequenced and compared with the other related sequences in GenBank (NCBI). The screening of seven factors using PBD showed that only three variables: pH, incubation time, and aeration rate (rpm) affected significantly cellulase production. Box–Behnken design was used to estimate the optimal level of the selected variables based on the results of the PBD. All variables increased significantly cellulase using A. terreus (OQ085169). The P value was very low (0.0207) that indicated the significant, high correlation between the predicted and actual values (R2=0.98), this indicating 98% of the variation in the cellulase activity was owing to the selected independent variables.","PeriodicalId":11568,"journal":{"name":"Egyptian Pharmaceutical Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139365377","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
Bioassay and expression alterations of acetyl cholinesterase enzyme gene to spinosad (bio-insecticides) on nontarget silkworm, Bombyx mori (Lepidoptera: Bombycidae) 非靶家蚕(鳞翅目:家蚕科)乙酰胆碱酯酶基因的生物测定及对生物杀虫剂spinosad的表达变化
Q2 Pharmacology, Toxicology and Pharmaceutics Pub Date : 2023-07-01 DOI: 10.4103/epj.epj_27_23
Shereen Mohamed, Dina El-Ashram, Enas M. Y. Elyamani
Background Bombyx mori, the mulberry silkworm, feeds entirely on mulberry leaves and is extremely sensitive to agrochemicals, even in low doses. The mulberry plantations must be insecticide-free. However, contamination by pesticides from neighboring crops occurs indirectly and harms silkworm breeding. Spinosad, a neurotoxic insecticide that acts on the nervous system of insects through contact or feeding, is the most environmentally friendly suitable bioinsecticide. It has been used to control pests in field crops. Objective In this study, the insecticide, spinosad formulation was first tested for bioassay, utilizing three different concentrations of spinosad on B. mori larvae. Second, the total RNA was isolated (isolation of total RNA) from silkworm, B. mori larvae to study the spinosad effect on acetylcholinesterase (Ace) gene expression. Materials and methods The type of insecticide used in this study is the spinosad formulation. Spinosad is available under the commercial name, Biosad 22.8% SC; the recommended concentration is 0.1 ppm. Bioassay test was done with three different concentrations of spinosad (0.1, 0.05, and 0.025 ppm). Determination of the LC values of the toxicity of three concentrations of spinosad on the fifth instar larvae of B. mori was evaluated using the mulberry leaves dipping technique. The treated mulberry leaves were offered once on the first day of the fifth instar after morning feeds, then the fresh leaves were offered during the remaining days. After 24 h of treatment, the mortality counts were recorded. LC25, LC50, and LC90 values for spinosad were calculated by probit analysis using the Ldp line software. Total RNA was isolated from entire tissues of the fifth instar larvae of the silkworm, B. mori by the standard TRIzol reagent extraction method. The complete Poly (A)+RNA isolated from insect tissues was reverse transcribed into cDNA. The sequence of primers of apoptosis is used in real-time quantitative PCR reactions to determine the expression levels of Ace-related gene. Results and conclusion Spinosad is the most economically and ecologically recommended insecticide to be used to control the agricultural pests that attack different field crops in Egypt. The toxicological effects of spinosad and its effect on the Ace gene of mulberry silkworm, B. mori were studied in this study. The results showed that treatment with 0.1 ppm of spinosad caused the highest mortality (88.9%) to the fifth instar larvae of B. mori, followed by the spinosad concentrations 0.05 and 0.025 ppm. The results showed a significant difference in LC values of spinosad on the fifth instar of B. mori. LC25, LC50, LC75, and LC90 values were recorded to be 0.008, 0.0217, 0.0536, and 0.1969 ppm, respectively. The expression levels of Ace gene in the B. mori group treated with low (0.025 ppm) and medium doses (0.05 ppm) of spinosad were increased by 141 and 396%, respectively. However, the expression level of Ace gene was increased by 657% for the
背景家蚕是一种完全以桑叶为食的桑蚕,即使在低剂量下也对农用化学品极为敏感。桑园必须不含杀虫剂。然而,来自邻近作物的农药污染是间接发生的,并危害蚕种。Spinosad是一种神经毒性杀虫剂,通过接触或喂食作用于昆虫的神经系统,是最环保的合适生物杀虫剂。它已被用于控制大田作物中的害虫。目的利用三种不同浓度的多杀菌素对家蚕幼虫进行生物测定。其次,从家蚕幼虫中分离总RNA(总RNA的分离),研究刺突酸对乙酰胆碱酯酶(Ace)基因表达的影响。材料和方法本研究中使用的杀虫剂类型为多杀菌素制剂。Spinosad的商业名称为Biosad 22.8%SC;推荐浓度为0.1 ppm。用三种不同浓度的多杀菌素(0.1、0.05和0.025 ppm)。采用桑叶浸渍法测定了三种浓度的多杀菌素对家蚕五龄幼虫毒性的LC值。处理过的桑叶在5龄的第一天早上喂食后提供一次,然后在剩下的几天提供新鲜的桑叶。24小时后 治疗h,记录死亡率。使用Ldp线软件通过probit分析计算多杀菌素的LC25、LC50和LC90值。采用标准TRIzol试剂提取法从家蚕五龄幼虫的全组织中分离总RNA。将从昆虫组织中分离的完整的Poly(A)+RNA逆转录为cDNA。凋亡引物序列用于实时定量PCR反应,以确定Ace相关基因的表达水平。结果和结论Spinosad是埃及最经济、最生态的杀虫剂,可用于控制攻击不同农田作物的农业害虫。研究了多杀菌素的毒理学效应及其对桑蚕Ace基因的影响。结果表明,用0.1 ppm的多杀菌素对家蚕五龄幼虫的死亡率最高(88.9%),其次是0.05和0.025 ppm。结果表明,5龄家蚕多杀菌素的LC值存在显著差异。记录的LC25、LC50、LC75和LC90值分别为0.008、0.0217、0.0536和0.1969 ppm。用低浓度(0.025 ppm)和中等剂量(0.05 ppm)分别增加了141和396%。然而,高剂量组的Ace基因表达水平增加了657%(0.1 ppm)与对照组相比有非常显著的差异(P<0.01)。本研究证实,使用浓度最低且对蚕造成伤害的多杀菌素,在喂入含有最少多杀菌素化合物的桑叶时,最好不要在桑树和任何邻近的田地喷洒多杀菌素。
{"title":"Bioassay and expression alterations of acetyl cholinesterase enzyme gene to spinosad (bio-insecticides) on nontarget silkworm, Bombyx mori (Lepidoptera: Bombycidae)","authors":"Shereen Mohamed, Dina El-Ashram, Enas M. Y. Elyamani","doi":"10.4103/epj.epj_27_23","DOIUrl":"https://doi.org/10.4103/epj.epj_27_23","url":null,"abstract":"Background Bombyx mori, the mulberry silkworm, feeds entirely on mulberry leaves and is extremely sensitive to agrochemicals, even in low doses. The mulberry plantations must be insecticide-free. However, contamination by pesticides from neighboring crops occurs indirectly and harms silkworm breeding. Spinosad, a neurotoxic insecticide that acts on the nervous system of insects through contact or feeding, is the most environmentally friendly suitable bioinsecticide. It has been used to control pests in field crops. Objective In this study, the insecticide, spinosad formulation was first tested for bioassay, utilizing three different concentrations of spinosad on B. mori larvae. Second, the total RNA was isolated (isolation of total RNA) from silkworm, B. mori larvae to study the spinosad effect on acetylcholinesterase (Ace) gene expression. Materials and methods The type of insecticide used in this study is the spinosad formulation. Spinosad is available under the commercial name, Biosad 22.8% SC; the recommended concentration is 0.1 ppm. Bioassay test was done with three different concentrations of spinosad (0.1, 0.05, and 0.025 ppm). Determination of the LC values of the toxicity of three concentrations of spinosad on the fifth instar larvae of B. mori was evaluated using the mulberry leaves dipping technique. The treated mulberry leaves were offered once on the first day of the fifth instar after morning feeds, then the fresh leaves were offered during the remaining days. After 24 h of treatment, the mortality counts were recorded. LC25, LC50, and LC90 values for spinosad were calculated by probit analysis using the Ldp line software. Total RNA was isolated from entire tissues of the fifth instar larvae of the silkworm, B. mori by the standard TRIzol reagent extraction method. The complete Poly (A)+RNA isolated from insect tissues was reverse transcribed into cDNA. The sequence of primers of apoptosis is used in real-time quantitative PCR reactions to determine the expression levels of Ace-related gene. Results and conclusion Spinosad is the most economically and ecologically recommended insecticide to be used to control the agricultural pests that attack different field crops in Egypt. The toxicological effects of spinosad and its effect on the Ace gene of mulberry silkworm, B. mori were studied in this study. The results showed that treatment with 0.1 ppm of spinosad caused the highest mortality (88.9%) to the fifth instar larvae of B. mori, followed by the spinosad concentrations 0.05 and 0.025 ppm. The results showed a significant difference in LC values of spinosad on the fifth instar of B. mori. LC25, LC50, LC75, and LC90 values were recorded to be 0.008, 0.0217, 0.0536, and 0.1969 ppm, respectively. The expression levels of Ace gene in the B. mori group treated with low (0.025 ppm) and medium doses (0.05 ppm) of spinosad were increased by 141 and 396%, respectively. However, the expression level of Ace gene was increased by 657% for the","PeriodicalId":11568,"journal":{"name":"Egyptian Pharmaceutical Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46612270","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
Influence of date palm pollen grain extract on rabbit buck semen characteristics throughout chilled storage period of 72 h 枣椰花粉萃取物在 72 小时冷藏期间对家兔精液特征的影响
Q2 Pharmacology, Toxicology and Pharmaceutics Pub Date : 2023-07-01 DOI: 10.4103/epj.epj_15_23
I. El-Seadawy, Mohamed Kotp, Heba Hozyen, W. El-Nattat, M. El-Tohamy
Background The demand for using stored semen in artificial insemination programs of livestock animals is increasing. Therefore, developing and improving methods for semen preservation would provide adequate fertility rates that maintain the high production rates for rabbit industry. Several studies on preservation protocols and extender composition have been carried out. Objective The current study was designed to examine the effect of various concentrations of date palm pollen grain extract (DPPE) on postchilling quality of rabbit semen. Materials and methods Total phenolic and flavonoid substances and antioxidant activity were assessed in DPPE. High-performance liquid chromatography was used for identification and separation of goal metabolites. Semen was gathered from 10 male rabbits, grouped, and then split into five fractions (500 μl each). The first fraction represented as control, whereas DPPE was supplemented at concentrations of 1.6, 2.0, 2.4, and 2.8 mg/5 ml tris-citric extender. Extended semen specimens were cooled at 4°C for 72 h. Motile, life, abnormal, membrane, and acrosome integrity percentages of sperms were appraised in chilled semen all over the refrigeration period. Results and conclusion Total phenolic and total flavonoids contents in the DPPE were 4.15 mg GAE/g extract and 0.74 mg CE/g extract, respectively. The DPPE specimen showed various antiradical activity gauged toward 2,2-azino-bis/3-ethil-benothiazoline-6-sulfonic acid (12.37 mM TE/g) and 2,2-Diphenyl-1-picryl-hydrazyl (4.06 mM TE/g). However, the reducing capacity assessed by ferric reducing activity power method was 9.19 mM TE/g/g. The most effective compounds in the DPPE were pyrogallol (4150.92 μg/g extract), ferulic acid (2935.50 μg/g extract), and rutin (2163.99 μg/g extract). The enrichment of semen extenders with 2.4 mg DPPE/5 ml tris-citric extender had preserved the sperm forward motility, sperm livability, sperm acrosome integrities, and sperm membrane integrities in an upright state during cooling till 72 h related to control treating. No adverse effects were recorded on sperm abnormalities. It could be concluded that the enriching of rabbit bucks’ semen tris-basic extender by 2.4 mg DPPE/5 ml tris-extender (the perfect and harmless concentration) sustained the sperm features in decent conditions all over a cooling period of 72 h.
背景 在家畜人工授精计划中使用储存精液的需求日益增加。因此,开发和改进精液保存方法可提供足够的受精率,从而维持养兔业的高生产率。有关精液保存方案和延长剂成分的研究已经开展了多项。本研究旨在探讨不同浓度的枣椰花粉颗粒提取物(DPPE)对兔精液冷藏后质量的影响。材料和方法 评估 DPPE 中的总酚和类黄酮物质以及抗氧化活性。采用高效液相色谱法鉴定和分离目标代谢物。收集 10 只雄性兔子的精液,分组后分成 5 份(每份 500 μl)。第一个馏分为对照组,而 DPPE 的补充浓度分别为 1.6、2.0、2.4 和 2.8 mg/5 ml 三柠檬酸扩展剂。在整个冷藏期间,对冷藏精液中精子的活动率、寿命、畸形率、膜完整性和顶体完整性进行评估。结果与结论 DPPE 中的总酚和总黄酮含量分别为 4.15 毫克 GAE/克提取物和 0.74 毫克 CE/克提取物。DPPE 试样对 2,2-叠氮-双/3-乙二基-苯并噻唑啉-6-磺酸(12.37 mM TE/g)和 2,2-二苯基-1-苦基肼(4.06 mM TE/g)具有不同的抗自由基活性。然而,用铁还原活性力法评估的还原能力为 9.19 mM TE/g/g。DPPE 中最有效的化合物是焦棓醇(4150.92 μg/g 提取物)、阿魏酸(2935.50 μg/g 提取物)和芦丁(2163.99 μg/g 提取物)。与对照组相比,用 2.4 毫克 DPPE/5 毫升三柠檬酸扩展剂对精液扩展剂进行富集后,精子的前向运动能力、精子活率、精子顶体完整率和精子膜完整率在冷却至 72 小时后仍保持直立状态。未发现精子异常的不良影响。由此可以得出结论,用 2.4 毫克 DPPE/5 毫升三碱式扩展剂(最佳和无害浓度)对家兔精液三碱式扩展剂进行浓缩,可以在 72 小时的冷却期内保持精子的正常特征。
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引用次数: 0
The pharmacological impact of Astragalus membranaceus against coccidial and bacterial infection in vitro 黄芪体外抗球虫和细菌感染的药理作用
Q2 Pharmacology, Toxicology and Pharmaceutics Pub Date : 2023-04-01 DOI: 10.4103/epj.epj_3_23
Reem M. Ramadan, F. Youssef, E. Fouad, A. Orabi, M. Khalifa
Background Astragalus polysaccharides (APS) are a novel macromolecule extracted from the herbal plant Astragali radix with potential biological activity such as antioxidant, anti-inflammatory, antidiabetic, anticancer, and immunomodulatory properties. Objectives The present research emphasizes on some of the biological characteristics of this product including its phytochemical screening, its effective LD50, its antioxidant, anti-inflammatory, anticoccidial, and antimicrobial activities in vitro. Materials and methods Phytochemical screening of the tested extract proved that it contained alkaloids, flavonoids, and glycoside components. Testing its efficacy as bactericidal versus Escherichia coli, Salmonella typhimurium, Klebsiella pneumoniae, Pasteurella multocida and Staphylococcus aureus its value as a coccidiocidal drug against five chicken Eimeria species oocysts and its effect on the level of DNA genotoxic damage using comet assay proved high significant efficacy (P≤0.05) in the form of marked inhibition zone of bacteria, considerable sporulation inhibition percentage in oocysts as well as high genotoxic damages in the DNA. Result and conclusion The study proved the presence of a direct relationship between the increase in APS concentrations and exposure time and the rate of sporulation inhibition and DNA damage in oocysts subjected to various doses of APS. This DNA damage was determined by marked variations in tail’s length (µm), the percentage of DNA in the tail segment, and tail’s moment were used to demonstrate this relationship (µm). In conclusion, APS proved to be a potential herbal to have anticoccidial and antibacterial attributes in controlling both infections in chickens.
背景黄芪多糖(APS)是从黄芪中提取的一种新的大分子,具有抗氧化、抗炎、抗糖尿病、抗癌和免疫调节等潜在的生物活性。目的研究该产品的一些生物学特性,包括其植物化学筛选、有效LD50、抗氧化、抗炎、抗球虫和体外抗菌活性。材料与方法经植物化学筛选,该提取物含有生物碱、黄酮类和糖苷类成分。通过彗星试验测试其对大肠杆菌、鼠伤寒沙门氏菌、肺炎克雷伯菌、多杀性巴氏杆菌和金黄色葡萄球菌的杀菌效果,其作为对五种鸡艾美耳球虫卵囊的杀球虫药物的价值及其对DNA基因毒性损伤水平的影响,证明其具有显著的细菌抑制区形式的高效性(P≤0.05),卵囊中相当大的孢子形成抑制百分比以及DNA中的高遗传毒性损伤。结果和结论本研究证明,APS浓度的增加和暴露时间与不同剂量APS对卵囊孢子形成的抑制率和DNA损伤率之间存在直接关系。这种DNA损伤是通过尾巴长度(µm)、尾巴片段中DNA的百分比和尾巴力矩的显著变化来确定的。总之,APS被证明是一种具有抗球虫和抗菌特性的潜在草药,可以控制鸡的两种感染。
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引用次数: 2
期刊
Egyptian Pharmaceutical Journal
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