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Monte Carlo Analysis of Different Administration Regiments for Isavuconazole against <i>Candida spp.</i>and <i>Aspergillus spp.</i>
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作者 Jiuli Hu Chanchan Hu Xiaoqin Zhu 《Pharmacology & Pharmacy》 2021年第12期311-318,共8页
<span style="font-family:Verdana;">In our study, we aimed to optimize the dosage regimen of Isavuconazole </span><span style="font-family:""><span style="font-family:... <span style="font-family:Verdana;">In our study, we aimed to optimize the dosage regimen of Isavuconazole </span><span style="font-family:""><span style="font-family:Verdana;">against </span><i><span style="font-family:Verdana;">Candida spp. </span></i><span style="font-family:Verdana;">and </span><i><span style="font-family:Verdana;">Aspergillus spp. </span></i><span style="font-family:Verdana;">by Mo</span></span><span style="font-family:Verdana;">n</span><span style="font-family:Verdana;">te Carlo simulation (MSC). Pharmacokinetic parameters and microbiological data of Isavuconazole were collected. Then we used MSC to simulate 10,000 patients analyzed by Crystal Ball to calculate probability of target attainment (PTA) and cumulative fraction of response (CFR). With dosages of 100</span><span style="font-family:""> </span><span style="font-family:Verdana;">mg, 200</span><span style="font-family:""> </span><span style="font-family:Verdana;">mg, and 400</span><span style="font-family:""> </span><span style="font-family:Verdana;">mg in oral group and dosages of 100</span><span style="font-family:""> </span><span style="font-family:Verdana;">mg, and 200</span><span style="font-family:""> </span><span style="font-family:Verdana;">mg in intravenous administration, all have different degree</span><span style="font-family:Verdana;">s</span><span style="font-family:Verdana;"> of antifungal effect. But when the dosage regimen was 50</span><span style="font-family:""> </span><span style="font-family:""><span style="font-family:Verdana;">mg IV, the therapeutic effect of Isavuconazole against </span><i><span style="font-family:Verdana;">Aspergillus spp.</span></i><span style="font-family:Verdana;"> and </span><i><span style="font-family:Verdana;">Candida spp. </span></i><span style="font-family:Verdana;">were not good. 展开更多
关键词 Monte Carlo Simulation (MSC) Isavuconazole Candida spp. aspergillus spp.
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Isolation and Identification of Aspergillus spp. During One Year in the Hospitals
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作者 Iskender Karalti Gunay Tulay Colakoglu 《Journal of Life Sciences》 2012年第11期1220-1224,共5页
The aim of the present study was monitoring ofAspergillus spp. in six different hospitals in |stanbul. The authors know that disease like aspergillosis illness caused by Aspergillus spp. is very dangerous for people... The aim of the present study was monitoring ofAspergillus spp. in six different hospitals in |stanbul. The authors know that disease like aspergillosis illness caused by Aspergillus spp. is very dangerous for people's health. Therefore, the present work has been performed to evaluate the hospitals' environment. Petri-plate method has been performed for isolation. Samples were taken at six different hospitals and various locations of each. 13 different Aspergillus species and 141 Aspergillus colonies have been isolated in totally. Maximally isolated species are: Aspergillus niger (29.1%). A. nidulans (21.3%), A. candidus (12.8%), A. ochraceus (9.2%), and A. versicolor (7.8%). A. fumigates, A. flavus are the most pathogen species in human which have been isolated minimally. 展开更多
关键词 aspergillus hospital air Istanbul.
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基于改进YOLOv3-SPP算法的道路车辆检测 被引量:2
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作者 王涛 冯浩 +4 位作者 秘蓉新 李林 何振学 傅奕茗 吴姝 《通信学报》 EI CSCD 北大核心 2024年第2期68-78,共11页
针对在城市道路场景下视觉检测车辆时,车辆密集和远处车辆呈现小尺度,导致出现检测精度低或者漏检的问题,提出了一种基于改进的YOLOv3-SPP算法,对激活函数进行优化,以DIOU-NMS Loss作为边界框损失函数,增强网络的表达能力。为提高所提... 针对在城市道路场景下视觉检测车辆时,车辆密集和远处车辆呈现小尺度,导致出现检测精度低或者漏检的问题,提出了一种基于改进的YOLOv3-SPP算法,对激活函数进行优化,以DIOU-NMS Loss作为边界框损失函数,增强网络的表达能力。为提高所提算法对小目标和遮挡目标的特征提取能力,引入空洞卷积模块,增大目标的感受野。实验结果表明,所提算法在检测车辆目标时m AP提高了1.79%,也有效减少了在检测紧密车辆目标时出现的漏检现象。 展开更多
关键词 车辆检测 YOLOv3-spp算法 激活函数 空洞卷积 深度学习
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FOSB、SPP1基因表达对经肝动脉介入化疗栓塞术治疗的中晚期肝癌生存期预测价值
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作者 燕普 蔡瑜 曾建挺 《西部医学》 2024年第7期992-997,共6页
目的探讨骨肉瘤原癌基凶同源物B(FOSB)、分泌性磷蛋白1(SPP 1)基因表达对经肝动脉介入化疗栓塞术治疗的中晚期肝癌患者术后生存期的预测价值。方法回顾性分析2016年1月—2017年10月在西安医学院第一附属医院进行诊治的中晚期肝癌患者11... 目的探讨骨肉瘤原癌基凶同源物B(FOSB)、分泌性磷蛋白1(SPP 1)基因表达对经肝动脉介入化疗栓塞术治疗的中晚期肝癌患者术后生存期的预测价值。方法回顾性分析2016年1月—2017年10月在西安医学院第一附属医院进行诊治的中晚期肝癌患者115例作为研究对象,根据FOSB、SPP 1基因表达水平分为FOSB高表达组(n=52)、FOSB低表达组(n=63)及SPP 1高表达组(n=89)、SPP 1低表达组(n=26)。同时选取115例健康体检者为健康对照组。分析FOSB、SPP 1表达与中晚期肝癌患者临床病理特征的关系。对纳入研究的患者进行为期60个月的随访,Logistics风险回归模型分析影响患者生存期的危险因素。Kaplan-Meier生存曲线分析FOSB、SPP 1表达水平与患者生存预后的关系。结果肝癌患者外周血单个核细胞中FOSB mRNA表达水平明显低于健康对照组,SPP 1 mRNA表达水平明显高于健康对照组,差异具有统计学意义(P<0.05)。FOSB、SPP 1表达在中晚期肝癌患者肿瘤大小、Child-Pugh分级、淋巴转移、BCLC分期方面比较差异具有统计学意义(P<0.05)。单因素分析结果显示,存活组和死亡组在肿瘤大小、Child-Pugh分级、淋巴转移、BCLC分期、FOSB、SPP 1表达方面比较,差异均具有统计学意义(P<0.05)。肿瘤大小、Child-Pugh分级、淋巴转移、BCLC分期、FOSB低表达、SPP 1高表达均为中晚期肝癌患者生存期的独立危险因素(P<0.05)。随访时间60个月,患者生存率为17.39%(20/115),FOSB高表达组中位生存时间为39.7个月,明显高于FOSB低表达组的19.3个月(P<0.05);SPP 1低表达组中位生存时间为40个月,明显高于SPP 1高表达组的18个月(P<0.05)。结论FOSB在中晚期肝癌患者中表达明显下调,SPP 1表达上调,其对预测中晚期肝癌患者肝动脉介入化疗栓塞术治疗生存期具有一定的价值。FOSB、SPP 1有望成为评估介入术治疗患者预后的潜在指标,可协同肿瘤大小、Child-Pugh分级、淋巴转移、BCLC分期等临床指标预测或评估肝癌患者术后生存情况。 展开更多
关键词 FOSB spp 1 经肝动脉介入化疗栓塞术 中晚期肝癌 生存期 预测价值
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西沙马尾藻共附生真菌Aspergillus sp.SYPUF41304次级代谢产物的分离与鉴定
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作者 齐鑫 陈伟豪 +3 位作者 林秀萍 肖姣 王俊锋 刘永宏 《沈阳药科大学学报》 CAS CSCD 2024年第2期182-187,共6页
目的对西沙马尾藻共附生真菌Aspergillus sp.SYPUF41304的次级代谢产物进行分离与鉴定。方法利用硅胶柱色谱、凝胶柱色谱、中压反相柱色谱及半制备高效液相色谱等分离手段对马尾藻共附生真菌Aspergillus sp.SYPUF41304的液体发酵提取物... 目的对西沙马尾藻共附生真菌Aspergillus sp.SYPUF41304的次级代谢产物进行分离与鉴定。方法利用硅胶柱色谱、凝胶柱色谱、中压反相柱色谱及半制备高效液相色谱等分离手段对马尾藻共附生真菌Aspergillus sp.SYPUF41304的液体发酵提取物进行分离纯化,并利用核磁共振、质谱等波谱学方法,结合文献对照,确定化合物结构。结果最终从提取物中分离得到10个化合物,经鉴定为吲哚-3-甲醛(1H-indole-3-carboxaldehyde)(1)、吲哚-3-乙酸甲酯(methyl indole-3-acetate)(2)、环(L-脯氨酸-L-缬氨酸)(cyclo-L-prolyl-L-valine)(3)、brevianamide F(4)、asperterreusine A(5)、talaisocoumarin A(6)、3-甲基-6-羟基-8甲氧基-3,4-二氢异香豆素(3-methyl-6-hydroxy-8-methoxy-3,4-dihydroisocoumarin)(7)、3-甲氧基-6,8-二羟基-3-甲基-3,4-二氢异香豆素(3-methoxy-6,8-dihydroxy-3-methyl-3,4-dihydroisocoumarin)(8)、4-hydroxykigelin(9)和de-O-methyldiaporthin(10)。结论化合物按结构类型可分为生物碱和聚酮类等,化合物4~8均为首次从该属真菌中分离得到。所有化合物在4 mg·mL^(-1)浓度下,均未显示出抗细菌活性。 展开更多
关键词 马尾藻 共附生真菌 aspergillus sp. 次级代谢产物 结构鉴定
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华泽兰内生真菌Aspergillus puniceus次级代谢产物及其抗三阴性乳腺癌活性和作用机制
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作者 魏敏 陈莲 +6 位作者 陈剑锋 金桂兰 徐帮 王倩 邹坤 程凡 刘呈雄 《华中师范大学学报(自然科学版)》 CAS CSCD 北大核心 2024年第2期206-213,共8页
从华泽兰根部分离得到一株内生真菌Aspergillus puniceus.采用正相硅胶柱色谱、Sephadex LH-20凝胶柱色谱及半制备高效液相色谱等方法,从该菌株的发酵液中分离得到8个结构类似的口山酮类化合物,通过现代波谱技术分别鉴定为3′,4′-hydro... 从华泽兰根部分离得到一株内生真菌Aspergillus puniceus.采用正相硅胶柱色谱、Sephadex LH-20凝胶柱色谱及半制备高效液相色谱等方法,从该菌株的发酵液中分离得到8个结构类似的口山酮类化合物,通过现代波谱技术分别鉴定为3′,4′-hydrogenated austocystins A(1)、austocystin M(2)、austocystin F(3)、austocystin D(4)、austocystin B(5)、austocystin K(6)、austocystin A(7)、austocystin H(8).MTT结果显示化合物5对三阴性乳腺癌MDA-MB-231细胞具有较好的选择性细胞毒活性(IC_(50)为1.28μmol·L^(-1)).另外,流式细胞术检测化合物5作用于MDA-MB-231细胞后凋亡率的变化,相比于对照组,最高总凋亡率为69.7%.同时,AO/EB双荧光染色也证明化合物5能够诱导MDA-MB-231的细胞凋亡.JC-1线粒体膜电位检测进一步显示化合物5能够通过线粒体途径诱导三阴性乳腺癌MDA-MB-231的细胞凋亡. 展开更多
关键词 华泽兰 aspergillus puniceus 次级代谢产物 口山酮 三阴性乳腺癌 凋亡
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Effect of Aspergillus niger prolyl endopeptidase in patients with celiac disease on a long-term gluten-free diet 被引量:4
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作者 Juan Pablo Stefanolo Verónica Segura +13 位作者 Martina Grizzuti Abel Heredia Isabel Comino Ana Florencia Costa Roberto Puebla María Paz Temprano Sonia Isabel Niveloni Gabriel de Diego María E Oregui Edgardo Gustavo Smecuol Mauricio C de Marzi Elena F Verdú Carolina Sousa Julio César Bai 《World Journal of Gastroenterology》 SCIE CAS 2024年第11期1545-1555,共11页
BACKGROUND The gluten-free diet(GFD)has limitations,and there is intense research in the development of adjuvant therapies.AIM To examine the effects of orally administered Aspergillus niger prolyl endopeptidase prote... BACKGROUND The gluten-free diet(GFD)has limitations,and there is intense research in the development of adjuvant therapies.AIM To examine the effects of orally administered Aspergillus niger prolyl endopeptidase protease(AN-PEP)on inadvertent gluten exposure and symptom prevention in adult celiac disease(CeD)patients following their usual GFD.METHODS This was an exploratory,double-blind,randomized,placebo-controlled trial that enrolled CeD patients on a long-term GFD.After a 4-wk run-in period,patients were randomized to 4 wk of two AN-PEP capsules(GliadinX;AVI Research,LLC,United States)at each of three meals per day or placebo.Outcome endpoints were:(1)Average weekly stool gluten immunogenic peptides(GIP)between the run-in and end of treatments and between AN-PEP and placebo;(2)celiac symptom index(CSI);(3)CeD-specific serology;and(4)quality of life.Stool samples were collected for GIP testing by ELISA every Tuesday and Friday during run-ins and treatments.RESULTS Forty patients were randomized for the intention-to-treat analysis,and three were excluded from the per-protocol assessment.Overall,628/640(98.1%)stool samples were collected.GIP was undetectable(<0.08μg/g)in 65.6%of samples,and no differences between treatment arms were detected.Only 0.5%of samples had GIP concentrations sufficiently high(>0.32μg/g)to potentially cause mucosal damage.Median GIP concentration in the AN-PEP arm was 44.7%lower than in the run-in period.One-third of patients exhibiting GIP>0.08μg/g during run-in had lower or undetectable GIP after AN-PEP treatment.Compared with the run-in period,the proportion of symptomatic patients(CSI>38)in the AN-PEP arm was significantly lower(P<0.03).AN-PEP did not result in changes in specific serologies.CONCLUSION This exploratory study conducted in a real-life setting revealed high adherence to the GFD.The AN-PEP treatment did not significantly reduce the overall GIP stool concentration.However,given the observation of a significantly lower prevalence of patients with severe symptoms in the AN-PEP arm,further clinical research is warranted. 展开更多
关键词 Celiac disease aspergillus niger prolyl endoprotease Gluten immunogenic peptides TRIAL SYMPTOMS Real-life trial
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SPP1和PD-L1在子宫内膜癌组织中的表达及其预后价值
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作者 胡帅 武霞 +2 位作者 晋雨楠 范裕裕 索玉平 《现代肿瘤医学》 CAS 2024年第21期4121-4126,共6页
目的:分析分泌型磷蛋白1(secreted phosphoprotein 1,SPP1)和程序性死亡蛋白配体1(programmed cell death-ligand 1,PD-L1)在子宫内膜癌(endometrial carcinoma,EC)组织中的表达水平及与预后的关系。方法:通过免疫组织化学方法分析SPP1... 目的:分析分泌型磷蛋白1(secreted phosphoprotein 1,SPP1)和程序性死亡蛋白配体1(programmed cell death-ligand 1,PD-L1)在子宫内膜癌(endometrial carcinoma,EC)组织中的表达水平及与预后的关系。方法:通过免疫组织化学方法分析SPP1和PD-L1在84例EC组织和61例正常子宫内膜组织中的表达情况,分析SPP1和PD-L1表达与临床病理特征及预后的关系,利用UALCAN分析工具(https://ualcan.path.uab.edu/)分析癌症基因组图谱(The Cancer Genome Atlas,TCGA)数据库中EC组织SPP1和PD-L1 mRNA的表达及与预后的关系。结果:EC组织SPP1阳性表达率高于正常子宫内膜组织(71.43%vs 36.07%,P=0.001),PD-L1阳性表达率低于正常子宫内膜组织(25.00%vs 42.62%,P=0.025);EC组织中,SPP1阳性表达率与组织学分级相关(P<0.05),PD-L1阳性表达率与淋巴结转移相关(P<0.05),SPP1与PD-L1表达呈正相关(列联系数r=0.237,P=0.026);EC组织中,不同SPP1和PD-L1表达患者总生存期无差异(均P>0.05)。TCGA数据库中生物信息学分析显示EC中SPP1 mRNA表达水平显著高于正常子宫内膜组织(P<0.01),PD-L1 mRNA表达水平与正常子宫内膜组织比较,差异无统计学意义(P=0.057);EC组织SPP1 mRNA和PD-L1 mRNA表达水平呈正相关(r=0.350,P<0.05);不同SPP1和PD-L1表达水平患者总生存期无差异(均P>0.05)。结论:SPP1在EC组织中的表达与PD-L1呈正相关,可能共同参与EC免疫微环境调控,SPP1和PD-L1均不是EC独立预后因子。 展开更多
关键词 spp1 PD-L1 子宫内膜癌 预后
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Aspergillus cristatus LJSC.2006的分离鉴定及对茯茶发花品质的影响
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作者 肖娟娟 程滢 +7 位作者 刘雁 刘巧芳 蒋阿婷 黄建安 王坤波 刘仲华 王贞红 禹利君 《茶叶科学》 CAS CSCD 北大核心 2024年第4期639-654,共16页
为探究自行分离纯化菌株LJSC.2006对湖南茯茶主要黑毛茶发花品质的影响,综合菌落平皿形态、孢子电镜扫描特征、菌丝体分子标记鉴定结果,确定菌株LJSC.2006为冠突曲霉菌(Aspergillus cristatus LJSC.2006,GenBank登录号:MZ147025)。运用... 为探究自行分离纯化菌株LJSC.2006对湖南茯茶主要黑毛茶发花品质的影响,综合菌落平皿形态、孢子电镜扫描特征、菌丝体分子标记鉴定结果,确定菌株LJSC.2006为冠突曲霉菌(Aspergillus cristatus LJSC.2006,GenBank登录号:MZ147025)。运用感官审评、生化成分分析、HS-SPME/GC-MS挥发性组分分析等方法比较黑毛茶及其发花茶样的滋味、香气品质,发现黑毛茶发花后干茶色泽加深,金花满披,菌香显露,滋味醇和;滋味成分黄酮、茶多酚、可溶性糖、游离氨基酸、酯型儿茶素、杨梅素、槲皮素含量总体呈下降趋势;香气成分增加,醛类、酯类相对含量增多,苯乙烯和雪松醇为黑毛茶共有香气成分,(E)-芳樟醇-3,7-氧化物和苯乙酮为发花茶样共有香气成分;黑毛茶发花后,水杨酸甲酯、(E,E)-2,4-庚二烯醛、(E)-芳樟醇-3,7-氧化物、(E)-呋喃氧化芳樟醇、(E)-2-壬醛、(E)-2-已烯醛、(E)-2-(Z)-6-壬二烯醛、苯乙酮、(E)-2-壬烯醛及香叶酸甲酯等10种特征性挥发成分相对含量明显上升,综合形成了金花散茶的菌花香。 展开更多
关键词 冠突曲霉菌 菌种鉴定 黑毛茶 金花散茶 发花品质
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海洋真菌Aspergillus sp.LW152抗细菌活性代谢产物研究
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作者 刘仟茜 王茹 +2 位作者 蔡磊 殷军 刘玲 《中国抗生素杂志》 CAS CSCD 北大核心 2024年第6期627-633,共7页
目的对海洋真菌Aspergillus sp.LW152发酵提取物的抗细菌成分进行研究。方法利用硅胶柱层析、葡聚糖凝胶Sephadex LH-20柱层析、半制备高效液相色谱等方法,对该菌株发酵提取物进行分离纯化;化合物结构通过核磁共振波谱(NMR)、质谱(MS)... 目的对海洋真菌Aspergillus sp.LW152发酵提取物的抗细菌成分进行研究。方法利用硅胶柱层析、葡聚糖凝胶Sephadex LH-20柱层析、半制备高效液相色谱等方法,对该菌株发酵提取物进行分离纯化;化合物结构通过核磁共振波谱(NMR)、质谱(MS)等数据并与文献数据对比进行确定;采用微量肉汤稀释法对化合物抗菌活性进行体外评价。结果从真菌LW152发酵的乙酸乙酯提取物中分离得到了7个化合物,其结构分别鉴定为7-脱氧-7,14-二脱氢水杨酸(1)、7-脱氧-7,8-二脱氢水杨酸(2)、pseudaboydin B(3)、(Z)-5-(羟甲基)-2-(6'-甲基庚-2'-烯-2'-基)苯酚(4)、aspergillusene A(5)、2,4-二羟基-6-甲基苯甲酸甲酯(6)和1-亚油酸单甘油酯(7)。结论海洋真菌Aspergillussp.LW152能产生具有抗细菌活性的次级代谢产物,其中化合物4和5对6种致病细菌的生长均具有一定的抑制作用,化合物7对青枯雷尔菌的生长具有抑制作用。 展开更多
关键词 海洋真菌 曲霉属 分离纯化 结构鉴定 次级代谢产物 抗菌活性
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北部湾海洋真菌Aspergillus fumigatus DL-p0m-g2的化学成分及药理活性研究
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作者 冯婷 孙建 +7 位作者 王玉妃 盘伟斌 覃旭灿 覃炳云 周丽曼 王聪 王佩 孔凡栋 《热带海洋学报》 CAS CSCD 北大核心 2024年第1期154-166,共13页
为获得具有生物活性的化合物,对一株分离于北部湾钉螺菌株Aspergillus fumigatus DL-p0m-g2的化学成分及药理活性进行研究。综合应用反相ODS(octadecylsilyl)柱色谱、半制备液相等多种色谱学方法进行分离纯化,根据化合物理化性质、质谱... 为获得具有生物活性的化合物,对一株分离于北部湾钉螺菌株Aspergillus fumigatus DL-p0m-g2的化学成分及药理活性进行研究。综合应用反相ODS(octadecylsilyl)柱色谱、半制备液相等多种色谱学方法进行分离纯化,根据化合物理化性质、质谱和核磁共振波谱学数据进行结构鉴定,并对分离得到的化合物进行细胞毒活性、抑菌活性和胆固醇转运蛋白NPC1L1(NPC1-like intracellular cholesterol transporter 1)蛋白结合等生物活性评价。实验共分离得到21个生物碱类化合物和1个甾体,分别鉴定为6-methoxyspirotryprostatin B(1)、spirotryprostatin A(2)、fumitremorgin C(3)、cyclotryprostatin A(4)、fumitremorgin B(5)、pseurotin A(6)、azaspirofuran A(7)、azaspirofuran B(8)、cephalimysin C(9)、cephalimysin B(10)、fumiquinazoline C(11)、fumiquinazoline B(12)、fumiquinazoline A(13)、fumiquinazoline D(14)、fumiquinazoline F(15)、tryprostatin B(16)、verruculogen(17)、chaetominine(18)、bisdethiobis(methylthio)glitoxin(19)、helvolic acid(20)、7-deacetylpyripyropene A(21)、terezine D(22)。其中化合物6对人肝癌细胞(Hep G2)、人肺癌细胞(A549)、人直肠癌细胞(HCT116)有一定的细胞毒活性;化合物1、3和20对金黄色葡萄球菌表现出抑菌活性;化合物14与NPC1L1蛋白具有较好的结合,显示其在降脂药物开发中的研究潜力。 展开更多
关键词 aspergillus fumigatus 化学成分 细胞毒活性 抑菌活性 NPC1L1蛋白结合
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Genetic Diversity of Jute Mallow (Corchorus spp.) Accessions Based on ISSR Markers
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作者 Munguatosha Ngomuo Tsvetelina Stoilova +1 位作者 Tileye Feyissa Patrick A. Ndakidemi 《American Journal of Plant Sciences》 CAS 2024年第5期316-328,共13页
Jute mallow is a nutritious leafy vegetable. The leaves are rich in proteins, vitamins and essential amino acids. Molecular characterization of Jute mallow with focus on improvement of leaf yield is scarcely reported.... Jute mallow is a nutritious leafy vegetable. The leaves are rich in proteins, vitamins and essential amino acids. Molecular characterization of Jute mallow with focus on improvement of leaf yield is scarcely reported. In the present study, inter sequence simple repeats (ISSR) molecular markers were employed to assess genetic diversity and relationships of 83 accessions of Jute mallow from different parts of Africa and Asia conserved at the World Vegetable Center East and Southern Africa. A total of 89 bands were amplified by 8 ISSR primers. Number of polymorphic bands per primer ranged from 2 to 6 with an average of 2.75 bands per primer. Polymorphic information content (PIC) values ranged from 0.390 to 0.760 with average of 0.53. Average Nei’s gene diversity (h) and Shannon’s information index (I) were 0.335 and 0.494 respectively. The highest pairwise genetic distance was 0.431 observed in a population from East Africa accessions. PC1 and PC2 axis explained 21.69% and 11.66% of the total variation respectively. UPGMA cluster analysis grouped the accessions into six main clusters at genetic similarity coefficient of 0.53 as standard value for classification. These results have important implications for jute mallow breeding and conservation. 展开更多
关键词 Corchorus spp. Genetic Diversity ISSRS Jute Mallow Leafy Vegetable
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Biocontrol of Aspergillus flavus Strains Isolated from Bambara Groundnut (Vigna subterranea (L.) Verdc.) Seeds Using Essential Oils of Lippia multiflora Moldenke, Ocimum americanum L. (Lamiaceae) and Eucalyptus cameldulensis Dehnh
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作者 Mahamadi Nikiema Amidou S. Ouili +3 位作者 Cheik Omar Tidiane Compaoré Assiètta Ouattara François Palenfo Aboubakar Sidiki Ouattara 《Advances in Microbiology》 CAS 2024年第10期555-565,共11页
In nature, plant extracts play a crucial role in defending plants against biotic and abiotic stressors. Moreover, the use of plant-based products, such as plant extracts, represents a promising alternative to syntheti... In nature, plant extracts play a crucial role in defending plants against biotic and abiotic stressors. Moreover, the use of plant-based products, such as plant extracts, represents a promising alternative to synthetic fungicides, which pose potential health risks to consumers. In this study, the antifungal activity of the essential oils (EOs) of Lippia multiflora, Eucalyptus camaldulensis and Ocimum americanum was evaluated against two strains of Aspergillus flavus via the agar dilution method. These two Aspergillus flavus fungi was isolated from Bamabra groundnut seeds. Lippia multiflora essential oil (EO) showed the best results compared with the other oils, with a minimum inhibitory concentration (MIC) of 9000 μg∙mL−1. The MIC for Eucalyptus camaldulensis and Ocimum americanum EOs was 10,800 μg∙mL−1. In view of their antifungal properties, these EOs could be used to develop a new, safe antifungal agent for food preservation. 展开更多
关键词 aspergillus flavus Essential Oil ANTIFUNGAL Bambara Groundnut
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Enzymatic Characterization of Pectinex XXL,a Pectinase Produced by Aspergillus niger,and Its Application in Fruit Juice Production
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作者 ZHU Furong LIANG Xiaomei +3 位作者 WEI Zhifu LI Li HE Fengyuan CHENG Zhong 《现代食品科技》 CAS 北大核心 2024年第7期81-88,共8页
Pectinex XXL,a commercially prepared pectinase,was investigated for its potential application in the fruit juice industry.Polygalacturonic acid was used as the substrate for determining the enzymatic properties of Pec... Pectinex XXL,a commercially prepared pectinase,was investigated for its potential application in the fruit juice industry.Polygalacturonic acid was used as the substrate for determining the enzymatic properties of Pectinex XXL using the DNS method.According to the results,the optimal pH for Pectinex XXL activity was 4.5,and the enzyme was stable in the pH range of 3.0~4.5.The optimal pH and pH stability range are consistent with those of some tropical and subtropical fruits.The optimal temperature for Pectinex XXL activity was 60℃,and the enzyme remained stable after one hour in a water bath set at 40℃.Additionally,the enzymatic activity was not inhibited in the presence of 1 mmol/L of Na^(+),Mg^(2+),Ba^(2+),Co^(2+),Zn^(2+),and Fe^(2+),whereas it was slightly inhibited in the presence of 2 mmol/L of K^(+)and Fe^(2+)and partially inhibited in the presence of 1 and 2 mmol/L of Ca^(2+)and Mn^(2+),demonstrating its good stability in acids and excellent thermal catalytic performance.Based on the above experimental results,depectinization experiments were performed on plantain and cherry tomato juices using different amounts of Pectinex XXL.After one hour reaction with 16 U/mL of the enzyme,the yields of the plantain and cherry tomato juices were substantially increased by 119.03%and 15.97%,respectively,while their light transmittance was remarkably enhanced by 37.65%and 12.35%,respectively.Furthermore,the enzyme reduced the viscosity of the plantain and cherry tomato juices by 88.29%and 29.50%,respectively.The juice production experiments confirmed that this enzyme can significantly improve the yield and light transmittance of plantain juice,while effectively reducing its viscosity.These findings indicate the potential of Pectinex XXL in the industrial production of plantain juice. 展开更多
关键词 PLANTAIN cherry tomato fruit juice aspergillus niger PECTINASE
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Polysaccharides of Aspergillus cristatus attenuate obesity by regulating gut microbiota and gut microbiota-related metabolites
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作者 Mingzhi Zhu Bohao Shang +8 位作者 Fang Zhou Yong Yuan Feiyan Yin Jin Cao Jianan Huang Kunbo Wang Xin Zeng Maiquan Li Zhonghua Liu 《Food Science and Human Wellness》 SCIE CSCD 2024年第3期1513-1530,共18页
Golden-flower fungus,the only dominant microorganism determining the Fu-brick tea quality through fermentation and the important microbe in Liupao tea,is considered a potential probiotic fungus based on its anti-obesi... Golden-flower fungus,the only dominant microorganism determining the Fu-brick tea quality through fermentation and the important microbe in Liupao tea,is considered a potential probiotic fungus based on its anti-obesity effect.However,the classification of golden-flower fungi is still controversial;the anti-obesity effect of golden-flower fungus polysaccharides remains unknown.In this study,we identify a golden-flower strain as Aspergillus cristatus based on morphological characteristics and multigene phylogeny analysis,which resolves the controversy of classification.Moreover,we find A.cristatus polysaccharides(ACPS)attenuate obesity in rats.ACPS modulate gut bacterial composition.in which Akkermansia,Akkermansia muciniphila,Bacteroides,Romboutsia,Blautia,and Desulfovibrio are considered the core microbes regulated by ACPS.ACPS increase fecal total short-chain fatty acid content and serum,hepatic,and fecal total bile acid content.Furthermore,ACPS-induced gut microbiota alteration plays a causal role in the protection from obesity,according to a fecal transplantation experiment.Thus,ACPS ameliorate obesity by regulating gut microbiota and gut microbiota-related metabolites. 展开更多
关键词 Golden-flower fungus aspergillus cristatus POLYSACCHARIDES OBESITY Gut microbiota
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Prevalence and Antibiotic Resistance of Urinary Tract Pathogens, with Molecular Identification of Klebsiella pneumoniae, Klebsiella oxytoca, and Acinetobacter spp., Using Multiplex Real-Time PCR
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作者 Hawa Tarnagda Djénéba Ouermi +12 位作者 Tani Sagna Wendyam Marie Christelle Nadembega Abdoul Karim Ouattara Lassina Traoré Rogomenoma Alice Ouedraogo Prosper Bado Bapio Valérie Elvira Jean Télesphore Bazie Nicole Bouda/Zongo Luc Zongo Albert Théophane Yonli Théodora Mahoukèdè Zohoncon Florencia Wendkuuni Djigma Jacques Simpore 《American Journal of Molecular Biology》 CAS 2024年第4期245-260,共16页
Urinary tract infections (UTIs) caused by uropathogens are a significant public health problem, and their treatment primarily relies on antibiotic therapy. However, the increasing global development of antibiotic resi... Urinary tract infections (UTIs) caused by uropathogens are a significant public health problem, and their treatment primarily relies on antibiotic therapy. However, the increasing global development of antibiotic resistance necessitates updating diagnostic techniques to ensure higher sensitivity and specificity, especially with advancements in science and medicine. This study aimed to evaluate the prevalence of UTIs and antibiotic resistance profiles through urine culture, as well as to identify Klebsiella pneumoniae, Klebsiella oxytoca, and Acinetobacter spp. in urine samples using a molecular approach with multiplex real-time PCR. From May 3 to July 25, 2023, at the Pietro Annigoni Biomolecular Research Center (CERBA) and Saint Camille Hospital of Ouagadougou (HOSCO), 209 urine samples collected from patients with suspected UTIs were analyzed using both urine culture and multiplex real-time PCR. Among the 209 patients, 52.15% were male and 47.85% female, with an average age of 46.87 ± 21.33 years. Urine cultures revealed an overall UTI prevalence of 23.44%, with a prevalence of 8.13% in men versus 15.31% in women (P = 0.023). The bacterial prevalence rates were as follows: Escherichia coli (12.92%), Klebsiella spp. (7.18%), Enterobacter cloacae (1.44%), Staphylococcus aureus (0.96%), and other bacteria. Klebsiella spp. demonstrated 100% resistance to Amoxicillin and Amoxicillin/Clavulanic Acid, while Escherichia coli showed 96.2% and 65.4% resistance to Amoxicillin and Amoxicillin/Clavulanic Acid, respectively. PCR analysis of the target bacteria revealed mono-infection prevalence rates of Klebsiella pneumoniae (10.39%), Klebsiella oxytoca (7.79%), and Acinetobacter spp. (7.79%), along with a co-infection prevalence rate of Klebsiella pneumoniae/Acinetobacter spp. (1.30%). This study demonstrated that PCR, with its high sensitivity and specificity, could effectively distinguish Klebsiella pneumoniae from Klebsiella oxytoca and detect Acinetobacter spp. in less than 24 hours—something urine culture alone could not achieve. The relative ease of automating urine PCR testing, combined with its diagnostic accuracy and rapid turnaround time, makes it a valuable addition to modern medical practice for the laboratory diagnosis of UTIs. 展开更多
关键词 Urinary Tract Infections Klebsiella pneumoniae Klebsiella oxytoca Acinetobacter spp. Urine Culture Real-Time PCR
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Effect of dissolved organic nitrogen on the bloom of Prorocentrum donghaiense and Karenia spp. in the East China Sea coastal waters
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作者 Xiaoru Cui Guangming Zhen +2 位作者 Jing Zhao Keqiang Li Xiulin Wang 《Acta Oceanologica Sinica》 SCIE CAS CSCD 2024年第6期71-85,共15页
Understan ding the mechanism of harmful algal bloom formation is vital for effectively preventing algal bloom outbreaks in coastal environments.Karenia spp.blooms in the East China Sea show a significant correlation w... Understan ding the mechanism of harmful algal bloom formation is vital for effectively preventing algal bloom outbreaks in coastal environments.Karenia spp.blooms in the East China Sea show a significant correlation with nutrient regimes.However,the impact of key components of nutrients,especially dissolved organic nitrogen(DON),on the blooms of Karenia spp.is not clear.Quantitative research is still lacking.In this study,the cruise observations,field mesocosm-flask culture experiments,and a multinitrogen-tri-phytoplankton-detritus model(NTPD) are combined to reveal the quantitative influence of nutrient regimes on the shift of Prorocentrum donghaiense and Karenia spp.in the East China Sea.It has a synchronism rhythm of diatom-P.donghaienseKarenia spp.-diatom loop in the field culture experiment,which is consistent with the results of the cruise observation.The results showed that the processes of terrigenous DON(TeDON) and dissolved inorganic nitrogen(DIN:NO_(3)^(-)-N,NH_(4)^(+)-N) absorption promoted P.donghaiense to become the dominant algae in the community;whereas the processes of DON from P.donghaiense absorption promoted Karenia spp.to become the dominant algae in ambient DIN exhaustion.In addition,the three-dimensional fluorescence components of humus C,tyrosine and fulvic acid can indicate the processes of growth and extinction of P.donghaiense and Karenia spp.,respectively.This study infers that P.donghaiense and Karenia spp.regime shift mechanism associated with the nutrient regime in coastal waters,which provides a scientific basis for the environmental management of coastal eco system health. 展开更多
关键词 Karenia spp. Prorocentrum donghaiense NUTRIENTS multinitrogen-tri-phytoplankton-detritus model three-dimensional fluorescence
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CD3ε of a pan T cell marker involved in mouse Aspergillus fumigatus keratitis
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作者 Wen-Hao Shi Li-Mei Wang +4 位作者 Hai-Jing Yan Shi-Long Liu Xian Yang Xue-JiaoYang Cheng-Ye Che 《International Journal of Ophthalmology(English edition)》 SCIE CAS 2024年第4期616-624,共9页
AIM:To explore whether CD3ε is involved in the adaptive immunity of Aspergillus fumigatus(A.fumigatus)keratitis in mice and the role of innate and adaptive immunity in it.METHODS:Mice models of A.fumigatus keratitis ... AIM:To explore whether CD3ε is involved in the adaptive immunity of Aspergillus fumigatus(A.fumigatus)keratitis in mice and the role of innate and adaptive immunity in it.METHODS:Mice models of A.fumigatus keratitis were established by intra-stromal injection and corneal epithelial scratching.Subconjunctival injections of natamycin,wedelolactone,LOX-1 inhibitor(poly I)or Dectin-1 inhibitor(laminarin)were used to treat mice with A.fumigatus keratitis.Mice were pretreated by intraperitoneal injection of anti-mouse CD3ε.We observed the corneal infection of mice under the slit lamp microscope and made a clinical score.The protein expression of CD3ε and interleukin-10(IL-10)was determined by Western blotting.RESULTS:With the disease progresses,the degree of corneal opacity and edema augmented.In the intrastromal injection models,CD3εprotein expression began to increase significantly on the 2^(nd) day.However,in the scraping epithelial method models,CD3ε only began to increase on the 3^(rd) day.After natamycin treatment,the degree of corneal inflammation in mice was significantly attenuated on the 3^(rd) day.After wedelolactone treatment,the severity of keratitis worsened.And the amount of CD3ε protein was also reduced,compared with the control group.By inhibiting LOX-1 and Dectin-1,there was no significant difference in CD3ε production compared with the control group.After inhibiting CD3ε,corneal ulcer area and clinical score increased,and IL-10 expression was downregulated.CONCLUSION:As a pan T cell marker,CD3ε participate in the adaptive immunity of A.fumigatus keratitis in mice.In our mice models,the corneas will enter the adaptive immune stage faster.By regulating IL-10,CD3ε exerts antiinflammatory and repairs effects in the adaptive immune stage. 展开更多
关键词 CD3ε adaptive immunity aspergillus fumigatus keratitis INTERLEUKIN-10
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Aspergillus niger prolyl endopeptidase in celiac disease
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作者 Marica Colella Concetta Cafiero Raffaele Palmirotta 《World Journal of Gastroenterology》 SCIE CAS 2024年第24期3044-3047,共4页
We comment here on the article by Stefanolo et al entitled“Effect of Aspergillus niger prolyl endopeptidase in patients with celiac disease on a long-term gluten-free diet”,published in the World Journal of Gastroen... We comment here on the article by Stefanolo et al entitled“Effect of Aspergillus niger prolyl endopeptidase in patients with celiac disease on a long-term gluten-free diet”,published in the World Journal of Gastroenterology.Celiac disease is a well-recognized systemic autoimmune disorder.In genetically susceptible people,the most evident damage is located in the small intestine,and is caused and worsened by the ingestion of gluten.For that reason,celiac patients adopt a gluten-free diet(GFD),but it has some limitations,and it does not prevent re-exposure to gluten.Research aims to develop adjuvant therapies,and one of the most studied alternatives is supplementation with Aspergillus niger prolyl endopeptidase protease(AN-PEP),which is able to degrade gluten in the stomach,reducing its concentration in the small intestine.The study found a high adherence to the GFD,but did not address AN-PEP as a gluten immunogenic peptide reducer,as it was only tested in patients following a GFD and not in gluten-exposing conditions.This study opens up new research perspectives in this area and shows that further study is needed to clarify the points that are still in doubt. 展开更多
关键词 Celiac disease aspergillus niger prolyl endoprotease Gluten immunogenic peptides TRIAL SYMPTOMS Real-life trial
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Strawberry (Fragaria spp.): Cultivation, Production, Consumption, and Marketing in Cameroon
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作者 Djeuani Astride Carole Moutamal Djem Rose Theophine Derricka +21 位作者 Mbouobda Hermann Désiré Abdoulaye Souaibou Meliga Essimi Célestine Bouopda Nono Joël Anafack Donasson Dioril Messouang Bernard Didier Ndongo III Boris Charlen Kaffo Emmanuel Kamga Fossouo Anselme Xavier Tiki Antoine Marie Kevin Nyimiebolo Bengono Audrey Maguy Manuela Diobe Motassy Adounga Samuel Brice Amama Amama Benjamin Nshanji Jones Panguepko Fendju Christophe Nzie Oussena Nguetrapouna Issofa Mpon Ikoyin Linda NKouéya Christelle Ladone Amang Amang A. Ziem Niemenak Nicolas 《Agricultural Sciences》 2024年第4期449-471,共23页
Strawberry (Fragaria spp.) is one of the most important fruits classified as exotic fruits imported into Cameroon. To have an inventory of its cultivation in Cameroon, a survey study was carried out among eight farms ... Strawberry (Fragaria spp.) is one of the most important fruits classified as exotic fruits imported into Cameroon. To have an inventory of its cultivation in Cameroon, a survey study was carried out among eight farms of Fragaria spp. from January 2021 to February 2022. The plant was introduced in Cameroon in 2018. There are 13 varieties of Fragaria spp. currently cultivated. Among these 13 varieties, eleven are hybrids of Fragaria x ananassa (“Amiga”, “Amine”, “Camarosa”, “Chandler”, “Charlotte”, “Elsanta”, “Gariguette”, “Madame Moutot”, “Ostara”, “Ruby gem” and “San Andreas”), and two of the hybrids of Fragaria vesca (“Maestro” and “Mara des bois”). The cropping system, irrigation system, and type of fertilizers applied differ from one strawberry farm to another. Biofertilizers (such as mycorrhizal), inorganic and organic fertilizers are actually used to improve production. The potential annual production of strawberries from January 2021 to February 2022, estimated based on the survey data, was 21.216 tons for all growers. Among these eight production farms, the Lolodorf BIO Farm presents 6000 kg (six tons) of strawberries and 100,000 stolons (seedlings) produced, from seven varieties of Fragaria spp. cultivated, with 6 varieties which are hybrids variety Fragaria x ananassa (“Amiga”, “Amine”, “Chandler”, “Gariguette”, “Madame Moutot”, and “Ruby gem”), and one which is a hybrid of Fragaria vesca (“Mara des bois”). Certain diseases were also observed and recorded depending on the growing areas. 展开更多
关键词 Fragaria spp. Cultivation Technique Attack of Pathogens Annual Production Cameroon
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