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L-Carnitine Improves Cytoprotection during Cryopreservation: A case study on Nili-Ravi Buffalo Sperm 左旋肉碱在低温保存过程中增强细胞保护作用:以Nili-Ravi水牛精子为例
Pub Date : 2021-09-11 DOI: 10.34091/ajls.3.4.10
S. Qadeer, R. Ejaz, A. Husna, A. Azam, S. Rubab, G. Nabi, S. Ullah, S. Akhter
The current study was aimed to evaluate the antioxidative effect of L-Carnitine at post thawing following cryopreservation of Nili-Ravi buffalo sperm. For this purpose, semen from three buffalo bulls were collected for 3 weeks using an artificial vagina (N=18; replicates). The qualified ejaculates were diluted employing tris-citric acid extender i.e., control did not receive any L-Carnitine and experimental groups having 0.5, 1.0, and 1.5 ng/mL of L-carnitine at 37 C with approximately 50 x 106 sperm/mL. The semen was cooled at 4 C and then equilibrated (4 hours), filled in straws (0.5 mL) at4 C, placed on LN2 vapours for 10 min, and kept into an LN2 container. The thawed semen was evaluated for post-thaw quality. The integrity of the sperm plasma membrane and motility (P?0.05) was highest in the extenders having 1.0 ng/mL of L-carnitine as compared to the control(received no L-Carnitine). However, sperm chromatin integrity and viability(live sperm with intact acrosome) remained similar. It was concluded that supplementing 1.0 ng/mL L-Carnitine of extender can improve the post-thaw quality of cryopreserved sperm. Based on the results of the current experiments it is recommended to include L-carnitine extender to improve post-thaw quality of buffalo sperm in terms of its motility and integrity ofits plasma membrane.Keywords: Buffalo, Sperm, Cryopreservation, Extender, L-Carnitine, Artificial insemination.
本研究旨在评价l -肉碱在Nili-Ravi水牛精子冷冻后解冻后的抗氧化作用。为此,使用人工阴道(N=18;复制)。合格的射精用三柠檬酸扩展剂稀释,即对照组不接受任何左旋肉碱,实验组在37℃下含有0.5、1.0和1.5 ng/mL的左旋肉碱,约50 × 106个精子/mL。精子在4℃下冷却,然后平衡(4小时),在4℃下填入吸管(0.5 mL),置于LN2蒸气上10分钟,保存在LN2容器中。对解冻后精液进行解冻后质量评价。与未添加左旋肉碱的对照组相比,添加1.0 ng/mL左旋肉碱组精子质膜完整性和活力最高(P?0.05)。然而,精子染色质完整性和活力(顶体完好的活精子)保持相似。由此可见,添加1.0 ng/mL l -肉碱扩展剂可提高冷冻精子解冻后的质量。根据目前的实验结果,建议在解冻后的水牛精子中添加左旋肉碱扩展剂,以提高其活力和质膜的完整性。关键词:水牛,精子,冷冻保存,填充剂,左旋肉碱,人工授精
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引用次数: 0
Unveiling the genetic divergence and phenotypic association in elite Pakistani wheat (Triticum aestivum L.) genotypes 揭示优质巴基斯坦小麦(Triticum aestivum L.)基因型的遗传分化和表型关联
Pub Date : 2021-09-11 DOI: 10.34091/ajls.4.1.14
N. Gandahi, A. W. Baloch, Mir Yar Mohammad Talpur, N. Fatima, T. F. Abro, G. H. Jatoi, Asadullah Mari, Liaquat Ali Bhutto, Rongshu Zhang
The present study was designed to assess genetic divergence between commercial bread wheat genotypes based on yield and its related traits and to carry out phenotypic correlation. Twenty bread hexaploid wheat varieties were assessed for mean performance, correlation analysis and genetic distance. Randomized complete block design was used with three replications during growing season, 2018-2019 at Wheat and Barley Research Institute, Tandojam. The mean squares depicted significant differences (P<0.01) for all the investigated traits among the tested genotypes, proving that used genetic resources possess a great potential for further breeding experiments. Regarding mean performance, the genotypes Sassui and TD-1 displayed desirable performance for a variety of traits, unveiling their importance in wheat breeding programs. The results also showed that tillers plant-1, grains spike-1 and seed index developed significantly positive (P<0.05) interrelationship with grain yield plant-1. This demonstrates that genotypes possessing higher extent of these traits may be chosen in selection for developing high yielding bread wheat genotypes. The larger genetic distance was witnessed between Johar-78 and TD-1, followed by SKD-1 and TJ-83, SKD-1 and Mehran-89, SKD-1 and Johar-78, TD-1 and Khirman, TJ-83 and Imdad-05, Mehran-89 and TD-1 and Johar-78 and TJ-83. These paired showed wide genetic distances, which may also be preferred in wheat hybridization program.Keywords: Genetic distance, hexaploid wheat, morphological traits, trait
本研究旨在基于产量及其相关性状评估商品面包小麦基因型间的遗传差异,并进行表型相关研究。对20个面包用六倍体小麦品种的平均生产性能、相关分析和遗传距离进行了评价。采用随机完全区组设计,于2018-2019年生长季节在坦多贾姆小麦大麦研究所进行3个重复试验。各基因型间各性状均方根差异均极显著(P<0.01),表明所利用遗传资源具有进一步育种试验的潜力。在平均性能方面,Sassui基因型和TD-1基因型在多种性状上表现出良好的性能,揭示了它们在小麦育种计划中的重要性。分蘖株-1、籽粒穗数-1和籽粒指数与籽粒产量呈显著正相关(P<0.05)。这说明在选择高产面包小麦基因型时,可以选择具有较高程度这些性状的基因型。其中,Johar-78与TD-1的遗传距离最大,其次是SKD-1与TJ-83、SKD-1与Mehran-89、SKD-1与Johar-78、TD-1与Khirman、TJ-83与Imdad-05、Mehran-89与TD-1、Johar-78与TJ-83。这些组合具有较宽的遗传距离,这也可能是小麦杂交计划的优先选择。关键词:遗传距离,六倍体小麦,形态性状,性状
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引用次数: 0
Effects of Staphylococcus aureus hemolysin toxins on blood cells and association with skin and soft tissue infections 金黄色葡萄球菌溶血素毒素对血细胞的影响及其与皮肤和软组织感染的关系
Pub Date : 2021-09-11 DOI: 10.34091/ajls.4.1.18
Adnan Shahid, Afsheen Rafiq
Staphylococcus aureus (S. aureus) is gram positive, catalase positive cocci which belongs to the family of Staphylococcaceae and is long known as clinical and foodborne pathogen. The emergence of multidrug resistance strain of S. aureus which is methicillin resistant S. aureus (MRSA) challenges the health care system because it can cause wide variety of hospital and community acquired skin and soft tissue infections which are difficult to treat. The virulence of S. aureus is because of different factors which includes toxins, enzymes and superantigens. S. aureus produce variety of exotoxins, enterotoxins and exfoliative toxins which contributes to the virulence of S. aureus. Hemolysin toxins produce by S. aureus strains are associated with different skin and soft tissue infections (SSTIs) and can cause the lysis of RBCs. Hemolysins are regulated by accessory gene regulator (agr) and is required for the enhanced expression of virulence factors secreted by S. aureus. Hemolysins have leucolytic activity and can help in iron scavenging from host. The most important toxin is alpha hemolysin which can induce the apoptosis and cause the lysis of epithelial cells, erythrocytes and keratinocytes. Human immune cells are affected by beta hemolysin and gamma hemolysin is a biocomponent toxin. Delta hemolysin is low molecular weight exotoxin which belongs to the class of phenol soluble modulins.Keywords: MRSA, Exotoxins, Hemolysins, SSTIs
金黄色葡萄球菌(S. aureus)是革兰氏阳性、过氧化氢酶阳性的球菌,属于葡萄球菌科,长期以来被认为是临床和食源性病原体。耐甲氧西林金黄色葡萄球菌(MRSA)多药耐药菌株的出现对卫生保健系统提出了挑战,因为它可以引起各种各样的医院和社区获得性皮肤和软组织感染,这些感染难以治疗。金黄色葡萄球菌的毒力是由多种因素引起的,包括毒素、酶和超级抗原。金黄色葡萄球菌产生多种外毒素、肠毒素和剥脱毒素,这些毒素有助于金黄色葡萄球菌的毒力。由金黄色葡萄球菌菌株产生的溶血素毒素与不同的皮肤和软组织感染(SSTIs)有关,并可导致红细胞溶解。溶血素受辅助基因调控因子(agr)调控,是金黄色葡萄球菌分泌毒力因子表达增强所必需的。溶血素具有溶血活性,可以帮助清除宿主体内的铁。其中最重要的毒素是α溶血素,它能诱导细胞凋亡,引起上皮细胞、红细胞和角质形成细胞的溶解。人类免疫细胞受到溶血素和溶血素的影响,溶血素是一种生物成分毒素。溶血素是低分子量外毒素,属于酚溶性调素类。关键词:MRSA,外毒素,溶血素,SSTIs
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引用次数: 1
Transferring of Lactobacillus antibiotic resistant genes to Salmonella 乳酸杆菌耐药基因向沙门氏菌转移
Pub Date : 2021-09-11 DOI: 10.34091/ajls.4.1.17
Muhammad Ashraf, S. Rahman, Muhammad Jawad Bashir, R. Aslam, Sultan Ali, A. Jabbar
Antibiotic resistance is a worldwide issue and becoming more problematic due to extensive misuse of antibiotics. The present study was aimed to analyze role of Lactobacillus in transmission of antibiotic resistance genes (tetM, ermB, sul2) to Salmonella and verification of these genes by real time polymerase chain reaction. A total of thirty fecal samples (15 were indigenous and 15 were broilers) were collected and analyzed by real time polymerase chain reaction. The results indicated that there was high expression of antibiotic resistance genes in Lactobacillus in case of broiler chicken than indigenous ones indicating Lactobacillus as a reservoir of antibiotic resistance genes but found to be non-significant in transferring these genes to Salmonella. In conclusion, the excessive use of animal growth promoters in poultry assists in acquisition of antibiotic resistance genes by normal micro-biota.Keywords: Broiler, Non-significant, Antibiotic resistance, Real time polymerase chain
抗生素耐药性是一个世界性的问题,并且由于抗生素的广泛滥用而变得更加成问题。本研究旨在分析乳酸菌在沙门氏菌中传播抗生素耐药基因(tetM、ermB、sul2)的作用,并通过实时聚合酶链反应对这些基因进行验证。采用实时聚合酶链反应对30份粪便样本(本地15份,肉鸡15份)进行分析。结果表明,肉鸡乳酸菌中耐药基因的表达量高于本地乳酸菌,表明乳酸菌是耐药基因的储存库,但将这些基因转移到沙门氏菌中的作用不显著。综上所述,在家禽中过量使用动物生长促进剂有助于正常微生物群获得抗生素耐药基因。关键词:肉鸡,非显著性,抗生素耐药性,实时聚合酶链
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引用次数: 0
Trichogramma chilonis, an effective egg parasitoid for control of white stem borer Scirpophaga innotata (Walker), (Lepidoptera: Pyralidae) in rice 一种防治水稻白茎螟虫(鳞翅目:蚜科)的有效卵寄生蜂——黄颡鱼赤眼蜂
Pub Date : 2021-09-11 DOI: 10.34091/ajls.4.1.6
Muhammad Yousif Rahimoon, Abdul Ghani Lanja, A. Bukero, Babar Hussain Chang, Jamal-u-ddin Hajano, M. McNeill, Ammara Rajput, Zainab Lanjar
Rice an important staple food crop of the world, which is attacked by the various insect pests, among them the stem borers are the most destructive pests, distributed in all rice growing areas of the world and cause the severe losses. This research investigated the efficacy of the parasitoid Trichogramma chilonis (Ishii) to control the white stem borer (Scirpophaga innotata) in rice. In this respect the field studies were conducted in lower Sindh, Pakistan for the year, Kharif - 2017 and 2018. Trichogramma egg parasitoid over 230 species are reported to have been remained in biological control of insect pests of over 200 insect species belonging to 70 different families, mainly the order Lepidoptera, Hemiptera, Orthroptera and Thysnoptera, in order to manage the white stem borer of rice the Trichogramma chilonis (Ishii) was used as a bio-control agent. The Studies revealed that T. chilonis proved an effective biocontrol strategy against white stem borer of rice. The result of this study could be useful in an integrated pest management program for the management of white stem borer of rice the Trichogramma chilonis.Keywords: Stem borer, Biocontrol, Parasitoid, Population suppression.
水稻是世界上重要的粮食作物,受到各种害虫的侵害,其中螟虫是最具破坏性的害虫,分布在世界所有水稻种植区,造成严重的损失。研究了拟寄生蜂赤眼蜂(Trichogramma chilonis, Ishii)防治水稻白茎螟虫(Scirpophaga innotata)的效果。在这方面,2017年和2018年在巴基斯坦信德省进行了实地研究。摘要为防治水稻白茎螟虫,利用赤眼蜂(Trichogramma chilonis, Ishii)作为生物防治剂,对鳞翅目、半翅目、直翅目、飞蛾目等70科200余种害虫进行了生物防治,目前已发现赤眼蜂卵寄生物230余种。结果表明,螟霉是一种有效的防治水稻白茎螟的生物防治策略。本研究结果可为水稻白茎螟赤眼蜂的综合防治提供参考。关键词:茎螟虫;生物防治;寄生蜂;
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引用次数: 1
Diagnostic approaches and prevalence of Rifampicin resistant Mycobacterium tuberculosis in District Mardan 马尔丹区耐利福平结核分枝杆菌的诊断方法及流行情况
Pub Date : 2021-09-11 DOI: 10.34091/ajls.4.1.8
Atif Kamil, Haseeb Ullah, Farooq Hussain, M. Jamal, Azmat Ali, M. Shah, Ayaz Ahmad, J. Khan, F. Anwar, Nabila
The disease tuberculosis (TB) caused by Mycobacterium Tuberculosis (MTB) is most common infectious disease in developing countries. The disease is fatal if not treated during the early stages of infection, thereby early and precise detection is a decisive step in curing the disease. The aim of this study was to analyze the prevalence of tuberculosis in patients reporting to Mardan Medical Complex (MMC), located in the district Mardan, KPK, Pakistan. The sputum of patients was analysed by Ziehl-Nilsen (ZN) staining technique followed by light microscopy called Acid-Fast Bacillus (AFB) staining. The sputum samples were collected from the patients and analysed by special PCR method called GeneXpert MTB/RIF assay, for genomic detection and resistance assay for rifampicin antibiotic were used, are the commonly used medicine for the treatment of MTB infection. Total 121 patients reported to MMC, represented 74 % patients from Mardan, 12% from Nowshera and 14% from Swabi. These patients were screened for the aim to evaluate the techniques for the detection of MTB. The light microscopy method confirmed 66 (55%) of the patients positive for MTB, whereas the same samples reported 78 (68%) patients positive for MTB through GeneXpert MTB/RIF assay, The Positive Predictive Value (PPV) and Negative Predictive Value (NPV) found for light microscopy were 99% and 78.1% respectively. The most used drug rifampicin was found ineffective in 9 patients (7%). Additionally, 83% of the patients when interviewed had a folk history of tuberculosis.Keywords: Microscopy, PCR, Mycobacterium tuberculosis, Rifampicin.
结核分枝杆菌(MTB)引起的结核病(TB)是发展中国家最常见的传染病。如果在感染的早期阶段不进行治疗,这种疾病是致命的,因此早期和精确的检测是治愈这种疾病的决定性步骤。本研究的目的是分析在巴基斯坦KPK马尔丹区马尔丹医疗中心(MMC)就诊的患者中肺结核的患病率。采用Ziehl-Nilsen (ZN)染色法对患者的痰液进行分析,随后采用光镜法进行抗酸杆菌(AFB)染色。采集患者痰液样本,采用GeneXpert MTB/RIF法进行基因检测和耐药性测定,对治疗MTB感染的常用抗生素利福平进行耐药性测定。MMC共报告了121例患者,其中74%来自马尔丹,12%来自瑙谢拉,14%来自斯瓦比。对这些患者进行筛选,目的是评估结核分枝杆菌检测技术。光镜法确诊66例(55%)MTB阳性,而GeneXpert MTB/RIF法确诊78例(68%)MTB阳性,光镜法阳性预测值(PPV)和阴性预测值(NPV)分别为99%和78.1%。常用药物利福平在9例(7%)患者中无效。此外,接受采访的患者中有83%有结核病的民间病史。关键词:显微镜,PCR,结核分枝杆菌,利福平
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引用次数: 0
Cell Transplantation Therapies to Reverse Type 1 Diabetes: A review 细胞移植治疗逆转1型糖尿病:综述
Pub Date : 2021-09-11 DOI: 10.34091/ajls.4.1.12
Amrah Inam, Z. Alam, O. Shah, Misbah, F. Shi
Stem cell technology is demonstrating promising advancements in cure of diseases due its differentiation ability. Type 1 diabetes is mainly caused by autoimmune ? cells destruction. In this review, we focus on treatment procedures of Type 1 Diabetes (T1D) with numerous stem cells (SCs) i.e hPSCs, MSCs, hESCs, BMSCs, AFSCs, HSCs and islet cells (that are not stem cells but they are approved worldwide and are being successfully used to permanently reverse T1D). A brief overview of this disease along with the advancements in treatment of T1D with stem cells is discussed. Biomaterial encapsulation to avoid immune rejection and improved immunomodulation and immune tolerance via drugs /bioengineering techniques makes the outcomes of SC therapies more efficient and productive, hence, proving to be another future milestone of completely reversing type 1 diabetes especially in those patients who got clinically diagnosed at an early stage and then received prompt treatment of either restoration of already available ? cells functionality or transplantation of purified and functional SCs differentiated insulin producing cells to normalize the glycemic control and homeostasis.Keywords: Type 1 Diabetes, ?-cells, Stem cells, Biomaterial
干细胞技术由于其分化能力,在疾病治疗方面显示出有希望的进展。1型糖尿病主要是由自身免疫引起的?细胞的破坏。在这篇综述中,我们重点关注了使用多种干细胞(如hPSCs、MSCs、hESCs、BMSCs、AFSCs、hsc和胰岛细胞)治疗1型糖尿病(T1D)的方法(这些细胞不是干细胞,但它们在世界范围内被批准并成功用于永久逆转T1D)。简要概述了这种疾病以及干细胞治疗T1D的进展。生物材料包封避免免疫排斥,通过药物/生物工程技术改善免疫调节和免疫耐受,使SC治疗的结果更加有效和多产,因此,证明是完全逆转1型糖尿病的另一个未来里程碑,特别是那些在早期得到临床诊断并立即接受治疗的患者。细胞功能或移植纯化和功能性SCs分化胰岛素产生细胞,以使血糖控制和体内平衡正常化。关键词:1型糖尿病,β细胞,干细胞,生物材料
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引用次数: 1
Assessing Late Antique villa transformation at individual sites: towards a spatial approach 评估晚期古玩别墅在个别地点的改造:走向空间的方法
Pub Date : 2021-08-12 DOI: 10.16995/traj.4336
J.A.L.D. Dodd
This paper builds on the methodology for assessing the transformation of Roman villas in Late Antiquity. Previous studies have moved from simple identification towards a more holistic way of spatially visualizing transformation (for example, Chavarría 2007; Dodd 2019), however, none of these previous attempts have led to a spatially comparable approach to site transformation across different regions and individual settlements. This paper will lay out the problematic nature of spatially illustrating villa transformation and address the development processes of prior studies. It will lay out the conceptual framework for a new approach to addressing villa transformation based on three spatial layers and demonstrate their applicability on two important villa settlements in Northern Britain and the Saarland.
本文建立在评估古代晚期罗马别墅转型的方法论基础上。以前的研究已经从简单的识别转向更全面的空间可视化转换方式(例如,Chavarría 2007;Dodd(2019)),然而,之前的这些尝试都没有在不同地区和个别定居点的场地改造中产生空间上可比较的方法。本文将阐述别墅空间改造的问题本质,并阐述先前研究的发展过程。它将为解决基于三个空间层的别墅改造的新方法提供概念框架,并展示其在英国北部和萨尔州两个重要别墅定居点的适用性。
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引用次数: 0
TRAC at 30: A Bibliometric Analysis of the TRAC Community TRAC 30年:TRAC社区的文献计量学分析
Pub Date : 2021-02-24 DOI: 10.16995/TRAJ.4344
Nicky Garland
As TRAC approaches another milestone anniversary there is much to celebrate - a successful conference, a large body of publications, and a thriving community. Part of this success stems from the unusually introspective and self-critical nature of the organisation. However, despite this tradition, there has been limited data-driven analysis of TRAC's successes and failures. This paper uses bibliometric data from the corpus of TRAC publications over the last 30 years to analyse whether the organisation has achieved its aims. Alongside data from comparable journals, this research will also determine whether TRAC is ahead or behind the wider academic world. This paper provides insights into how diverse TRAC has become and how me might move forward in future.
随着TRAC即将迎来又一个里程碑式的周年纪念,有很多事情值得庆祝——一次成功的会议、大量的出版物和一个蓬勃发展的社区。这种成功部分源于该组织不同寻常的内省和自我批评性质。然而,尽管有这样的传统,对TRAC的成功和失败的数据驱动分析仍然有限。本文使用来自TRAC出版物语料库的文献计量数据来分析该组织是否实现了其目标。除了来自同类期刊的数据外,这项研究还将确定TRAC是领先还是落后于更广泛的学术界。这篇文章提供了关于TRAC如何变得多样化以及我未来如何前进的见解。
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引用次数: 2
Finding the Social Life of Rural Non-Elites in Roman Italy 探寻罗马意大利乡村非精英阶层的社会生活
Pub Date : 2021-02-24 DOI: 10.16995/TRAJ.4345
Brian Theng
Scholarship generally places peasants on a spectrum of socio-economic independence and dependence. While opinions are shifting away from subsistence, self-sufficiency, and socio-political autarky as mainstays of the peasant condition, the conventional focus on hierarchical relations persists, leaving horizontal or ‘relational’ ones neglected. To address this imbalance, I first detail our need to deal with literary (self-) representations of rural non-elite life. I use Dio Chrysostom’s Euboean discourse to develop a non-exhaustive range of peer-level interactions including hospitality, reciprocity, and cooperative work. Archaeology can help unravel how these played out, but as site 9 from the Ager Lunensis shows, we need better evidence. Nevertheless, I offer tentative possibilities about veteran interactions and the dynamics between villa and small farm workers from site 154 from the Ager Capenas and Case Nuove from the Roman Peasant Project. I close by alluding to the potential of integrating horizontal social relations in broader historical narratives.
学术研究通常将农民置于社会经济独立和依赖的范围内。虽然人们的观点正在从维持生计、自给自足和社会政治上的自给自足转变为农民状况的主要支柱,但传统上对等级关系的关注仍然存在,而忽略了水平或“关系”的关系。为了解决这种不平衡,我首先详细说明我们需要处理农村非精英生活的文学(自我)表现。我使用Dio Chrysostom的Euboean话语来开发一个非详尽的对等层面的互动范围,包括好客,互惠和合作工作。考古学可以帮助解开这些是如何发生的,但正如阿格伦人的遗址所显示的那样,我们需要更好的证据。尽管如此,我还是提供了一些关于老兵互动和别墅和小农场工人之间的动态的可能性,这些工人来自agercapenas的site 154和来自罗马农民项目的Case Nuove。最后,我暗示了在更广泛的历史叙述中整合横向社会关系的潜力。
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引用次数: 0
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