Biology

Biology
  • 文章类型: Journal Article
    暂无摘要。
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

    求助全文

  • 文章类型: Journal Article
    暂无摘要。
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

    求助全文

  • 文章类型: Journal Article
    深度学习方法的应用,特别是大型语言模型(LLM)的利用,在植物生物学领域,对于产生关于植物细胞系统的新知识具有重要的前景。LLM框架表现出非凡的潜力,特别是随着蛋白质语言模型(PLM)的发展,允许对核酸和蛋白质序列进行深入分析。这种分析能力有助于辨别生物数据中复杂的模式和关系,包含DNA或蛋白质序列中的多尺度信息。PLM的贡献不仅限于序列模式和结构功能识别;它还支持农业遗传改进的进步。将深度学习方法整合到植物科学领域,为跨多尺度植物性状的基础研究提供了重大突破的机会。因此,深度学习方法的战略应用,特别是利用LLM的潜力,无疑将在推进植物科学方面发挥关键作用,工厂生产,植物用途和推动可持续农业生态和农业食品转型的轨迹。
    The application of deep learning methods, specifically the utilization of Large Language Models (LLMs), in the field of plant biology holds significant promise for generating novel knowledge on plant cell systems. The LLM framework exhibits exceptional potential, particularly with the development of Protein Language Models (PLMs), allowing for in-depth analyses of nucleic acid and protein sequences. This analytical capacity facilitates the discernment of intricate patterns and relationships within biological data, encompassing multi-scale information within DNA or protein sequences. The contribution of PLMs extends beyond mere sequence patterns and structure--function recognition; it also supports advancements in genetic improvements for agriculture. The integration of deep learning approaches into the domain of plant sciences offers opportunities for major breakthroughs in basic research across multi-scale plant traits. Consequently, the strategic application of deep learning methodologies, particularly leveraging the potential of LLMs, will undoubtedly play a pivotal role in advancing plant sciences, plant production, plant uses and propelling the trajectory toward sustainable agroecological and agro-food transitions.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

    求助全文

  • 文章类型: Journal Article
    软骨缺陷是活跃人群的常见病理,会影响生活质量。常见的治疗选择是用切碎的软骨(MC)治疗。由于保守治疗效果有限,手术治疗在程序和结果方面有所不同。本文介绍了一种改良的自体软骨修复技术。
    通过添加滑膜密封剂对MC进行改性。这提高了移植物的稳定性,允许软骨增殖.滑膜组织有可能刺激植入的软骨,促进愈合和再生。在回顾性病例系列中检查了改良技术的临床和功能结果。
    该技术已被证明对髌骨后软骨缺损具有可重复性,并且既有效又具有成本效益。对10例髌骨后软骨损伤患者进行了滑膜封闭MC。在严重的案件中,18±3个月后随访10例。患者在疼痛方面表现出良好的临床效果(VAS=1.9,KOOS疼痛=89.7),症状(KOOS症状=83.6),和日常活动(KOOS活动=96.6)。
    该程序将自体软骨修复的优点与一阶段手术方法相结合。它利用滑膜组织的再生潜力,同时提供改善的机械稳定性。这种技术提供了一种具有成本效益的,全层软骨缺损的自体溶液,并在中期显示出有希望的临床结果。
    UNASSIGNED: Cartilage defects are a common pathology in active people and affect quality of life. A common treatment option is treatment with minced cartilage (MC). As conservative therapy has a limited effect, surgical treatments vary in terms of procedure and results. A modified technique for autologous cartilage repair is presented here.
    UNASSIGNED: MC was modified by adding a synovial sealant. This improves the stability of the graft, allowing the cartilage to proliferate. The synovial tissue has the potential to stimulate the implanted cartilage, which promotes healing and regeneration. The clinical and functional results of the modified technique were examined in a retrospective case series.
    UNASSIGNED: The technique has proven to be reproducible for retropatellar cartilage defects and is both efficient and cost effective. MC with synovial sealing was performed in ten patients with retropatellar cartilage damage. In the conducted cases serious, 10 patients were available for follow-up after 18 ± 3 months. Patients showed good clinical results in terms of pain (VAS = 1.9, KOOS Pain = 89.7), symptoms (KOOS Symptoms = 83.6), and daily activity (KOOS Activity = 96.6).
    UNASSIGNED: The procedure combines the advantages of autologous cartilage repair with a one-stage surgical approach. It utilizes the regenerative potential of synovial tissue while providing improved mechanical stability. This technique offers a cost-effective, autologous solution for full-thickness cartilage defects, and shows promising clinical results in the medium term.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Journal Article
    背景:目前缺乏关于鼻咽小细胞神经内分泌癌(SCNEC-鼻咽)的信息。据信,这种类型的癌症与EB病毒(EBV)感染无关,并且与在其他器官中发生的经典SCNEC难以区分。
    方法:本文提供了我院3例鼻咽肿块,两名男性和一名女性。一入场,这些患者被认为是鼻咽癌伴淋巴结转移,其中一人有肝转移。对鼻咽粘膜组织进行活检以进行病理检查,包括免疫组织化学和原位杂交。在PubMed数据库中搜索了截至2024年4月以任何语言发表的有关SCNEC-鼻咽的文章。
    结果:3例患者在其他器官中具有相似的SCNEC组织学特征,但富含肿瘤浸润淋巴细胞(TIL)不同。所有这些都对全细胞角蛋白(panCK)和表皮生长因子受体(EGFR)进行了染色。病例1和病例2弥漫性表达胰岛素瘤相关蛋白1(INSM-1)和突触素(Syn),病例3对CD56和Syn强烈染色。3例p40、p63、TTF-1、CK20、S-100和NUT的免疫染色均为阴性。保留BRG-1、INI-1和Rb。p53均呈野生型表达。病例1、2和3的Ki-67标记为80%,90%,80%,分别。原位杂交显示3例肿瘤细胞中EBV编码的小RNA(EBER)的核阳性强且均匀。
    结论:EBV阳性的SCNEC鼻咽部非常罕见。这种肿瘤的起源仍然存在争议。它可能起源于EBV感染的粘膜上皮,如鼻咽癌。根据我们的案例和相关文献,我们发现EBV阳性的SCNEC鼻咽部可能是SCNEC的一个位点特异性亚型,具有不同的发病机制.该亚型不仅病毒阳性,而且与TIL相关,并且通过免疫组织化学未显示p53或Rb改变。它可能比经典的SCNEC对治疗更敏感,预后更好。我们将继续对这些患者进行随访,并收集更多病例,以进一步了解这种罕见实体瘤的独特生物学特性。
    BACKGROUND: There is currently scarcity of information on small cell neuroendocrine carcinoma of the nasopharynx (SCNEC-nasopharynx). It is believed that this type of cancer is not associated with Epstein-Barr virus (EBV) infection and is indistinguishable from classic SCNEC occurring in other organs.
    METHODS: Herein we provided 3 cases of nasopharyngeal mass in our hospital, two males and one female. On admission, these patients were considered nasopharyngeal carcinoma with lymph node metastasis, and one of them had liver metastasis. The nasopharyngeal mucosal tissues were biopsied for pathological examination including immunohistochemistry and in situ hybridization. PubMed database was searched for articles about SCNEC-nasopharynx published up to April 2024 in any language.
    RESULTS: The 3 cases had similar histological features of SCNEC in other organs but differed in rich- tumor-infiltrating lymphocytes (TILs). All of them stained for pancytokeratin (panCK) and epidermal growth factor receptor (EGFR). Case 1 and Case 2 diffusely expressed insulinoma-associated protein 1(INSM-1) and synaptophysin (Syn), Case 3 strongly stained for CD56 and Syn. Immunostaining of all 3 cases for p40, p63, TTF-1, CK20, S-100 and NUT showed negative. BRG-1, INI-1 and Rb were retained. And p53 all showed wild-type expression. The Ki-67 labeling indiced of case 1, 2, and 3 were 80%, 90%, and 80%, respectively. In situ hybridization showed strong and uniform nuclear positivity of EBV-encoded small RNAs (EBER) in the neoplastic cells of 3 cases.
    CONCLUSIONS: EBV-positive SCNEC-nasopharynx was exactly rare. The origin of this tumor is still controversial. It may originate from EBV-infected mucosal epithelium like nasopharyngeal carcinoma. Based on our cases and relevant literature, we found EBV-positive SCNEC-nasopharynx as a probably site-specific subtype of SCNEC with differing pathogenetic mechanism. The subtype not only virus positivity but also that it was associated with TILs and did not show p53 or Rb alterations by immunohistochemistry. It may be more responsive to treatment and have a better prognosis than classic SCNEC. We will continue to follow-up these patients and collect additional cases to further understand the unique biology of this rare solid tumor.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Journal Article
    神经科学专业的学生通常似乎对涉及人类大脑的实验室练习更敏感。在这里,我们描述了一个实验室,它利用人脑MRI来评估关于人脑中性别差异存在的长期争论,特别是call体。Widener和UCLA的学生都测量了Witelson(1989)或Hofer和Frahm(2006)所描述的已经标记的call体子区域。统计分析显示,在校正中矢状皮层的大小后,使用两种方案均存在性别差异。Widener的学生,然而,比加州大学洛杉矶分校的学生发现更多的性别差异。加州大学洛杉矶分校学生的实验室指导发生在COVID-19大流行期间。所以,实验室会议完全在线。相比之下,Widener学生受益于亲自实验室教学。尽管如此,这两个机构从callossi语料库的图像中获得的数据以及对教学效率的测量是相似的,这表明远程学习可能是一个有价值和可行的选择。Further,当亲自学习不是一种选择时,比如在大流行期间,数字数据库是在线学习的宝贵资源。当这些数据库在假设驱动的研究环境中使用时,它们可以作为基于课程的本科研究经验(CURE)的基础,众所周知,这有利于学生提高科学领域的留存率。
    Neuroscience students often seem more responsive to laboratory exercises that involve human brains. Here we describe a lab that utilizes human brain MRIs to evaluate a long-standing debate over the presence of sex differences in the human brain, specifically the corpus callosum. Students at both Widener and UCLA measured corpus callosum subregions that were already marked-off as described by Witelson (1989) or by Hofer and Frahm (2006). Statistical analyses revealed sex differences using both schemes after correcting for the size of the midsagittal cortex. Widener students, however, uncovered more sex differences than the UCLA students. Lab instruction for UCLA students occurred during the COVID-19 pandemic. So, lab sessions were completely online. In contrast, Widener students had the benefit of in-person lab instruction. Nonetheless, both the data obtained from the images of the corpus callosi as well as measures of pedagogical efficacy were similar between the two institutions, suggesting that distance learning may be a valuable and viable option. Further, when in person learning is not an option, such as during a pandemic, digital databases serve as invaluable resources for online learning. When these databases are utilized in a hypothesis driven research setting, they can serve as the basis for course-based undergraduate research experiences (CUREs), which are known to benefit students-improving retention in science fields.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Journal Article
    Biodiversity losses along with the exponential growth of global human population and human-provoked over-exploitation of natural resources. Genetic factors played an important role in the conservation of endangered species. Conservation genetics is a cross-field disciplinary of genetics and conservation biology. The course of conservation genetics is not available in colleges and universities, and the course of genetics does not directly reflect the content of biological conservation. We have taught genetics with integrative thoughts of conservation biology. In the form of case studies, we have integrated recent advances of research and technology in the relevant fields into the genetics classroom. As a result, we improved the undergraduates\' motivation and interest in active learning, provoked the mutual promotion of \"basic knowledge of genetics, awareness of ecological protection, and cultivate interdisciplinary thinking\", and set up the groundwork for cultivating interdisciplinary talents who not only master solid basic knowledge, but also have the concept of ecological civilization.
    随着全球人口数量的急剧增长和人类对自然资源的过度开发,生物多样性不断丧失。遗传因子对濒危物种的保护具有重要影响。保护遗传学是遗传学和保护生物学的交叉学科。高等院校缺乏专门开设保护遗传学课程,当前的《遗传学》课本中也没有直接体现生物保护的内容。本文作者在《遗传学》课程教学过程中尝试渗透保护生物学思想,以案例的形式,结合相关领域内最新研究成果和技术进展,将保护生物学(尤其是保护遗传学)思想和知识渗透到《遗传学》课堂教学和讨论环节中。由此,提升本科生主动学习的动力和兴趣,实现“掌握遗传学基础知识-树立生态保护意识-培养学科交叉思维”三者之间的相互促进,为培养既掌握扎实基础遗传学知识又具备生态文明理念的复合型人才奠定基础。.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

    求助全文

  • 文章类型: Journal Article
    肠吸虫是最常见的寄生虫类型之一。已记录到感染人类的约76种,属于14个科。感染通常发生在人类食用生的或未煮熟的食物时,这些食物含有感染性的con虫。这些寄生虫在形态上是多样的,地理分布和生命周期,这使得研究它们引起的寄生虫病变得困难。过去,许多这些肠道吸虫被认为是地方性寄生虫。然而,地理界限和面临风险的人口目前正在随着国际市场增长等因素而扩大和变化,改善运输系统,发达国家的新饮食习惯和人口变化。这些因素使得有必要更好地了解肠道吸虫感染。本章描述了人类肠道吸虫的主要特征与其生物学有关,流行病学,宿主-寄生虫关系,致病性,临床方面,诊断,治疗和控制。
    Intestinal trematodes are among the most common types of parasitic worms. About 76 species belonging to 14 families have been recorded infecting humans. Infection commonly occurs when humans eat raw or undercooked foods that contain the infective metacercariae. These parasites are diverse in regard to their morphology, geographical distribution and life cycle, which make it difficult to study the parasitic diseases that they cause. Many of these intestinal trematodes have been considered as endemic parasites in the past. However, the geographical limits and the population at risk are currently expanding and changing in relation to factors such as growing international markets, improved transportation systems, new eating habits in developed countries and demographic changes. These factors make it necessary to better understand intestinal trematode infections. This chapter describes the main features of human intestinal trematodes in relation to their biology, epidemiology, host-parasite relationships, pathogenicity, clinical aspects, diagnosis, treatment and control.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

    求助全文

  • 文章类型: Journal Article
    日本低剂量辐射研究规划和代理网络(PLANET)成立于2017年,以应对全日本专家网络的需求。它作为一个学术平台,提出战略和促进合作,以改善低剂量和低剂量率电离辐射的健康风险的定量估计。PLANET成立了第1工作组(动物实验中的剂量率效应),以巩固动物实验对致癌作用中剂量率效应的发现。考虑到这一领域的国际趋势以及日本的情况,PLANET在2023年更新了日本低剂量辐射研究的优先研究领域,以包括(i)低剂量和低剂量率辐射风险的表征,(ii)辐射风险个体化应考虑的因素,(iii)低剂量和低剂量率辐射效应的生物学机制,以及(iv)流行病学和生物学的整合。在这种情况下,PLANET成立了第2工作组(辐射风险研究的剂量和剂量率图),以确定已报告的对不同终点的可观察影响的剂量和剂量率范围;第3工作组(物种和器官特定剂量率效应),以考虑干细胞动力学在不同物种和器官的辐射致癌作用中的相关性;第4工作组(辐射相关致癌作用的研究图),以整理相关研究,包括那些非诱变效应,并确定优先研究领域。这些PLANET活动将用于改进风险评估,并有助于修订国际辐射防护委员会的下一个主要建议。
    The Planning and Acting Network for Low Dose Radiation Research in Japan (PLANET) was established in 2017 in response to the need for an all-Japan network of experts. It serves as an academic platform to propose strategies and facilitate collaboration to improve quantitative estimation of health risks from ionizing radiation at low-doses and low-dose-rates. PLANET established Working Group 1 (Dose-Rate Effects in Animal Experiments) to consolidate findings from animal experiments on dose-rate effects in carcinogenesis. Considering international trends in this field as well as the situation in Japan, PLANET updated its priority research areas for Japanese low-dose radiation research in 2023 to include (i) characterization of low-dose and low-dose-rate radiation risk, (ii) factors to be considered for individualization of radiation risk, (iii) biological mechanisms of low-dose and low-dose-rate radiation effects and (iv) integration of epidemiology and biology. In this context, PLANET established Working Group 2 (Dose and Dose-Rate Mapping for Radiation Risk Studies) to identify the range of doses and dose rates at which observable effects on different endpoints have been reported; Working Group 3 (Species- and Organ-Specific Dose-Rate Effects) to consider the relevance of stem cell dynamics in radiation carcinogenesis of different species and organs; and Working Group 4 (Research Mapping for Radiation-Related Carcinogenesis) to sort out relevant studies, including those on non-mutagenic effects, and to identify priority research areas. These PLANET activities will be used to improve the risk assessment and to contribute to the revision of the next main recommendations of the International Commission on Radiological Protection.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

    求助全文

  • 文章类型: Journal Article
    常见的臭虫,Cimexlectularius,和热带臭虫,Cimex半翅目是Cimicidae科中具有公共卫生重要性的主要物种。这项研究旨在确定伊朗东部臭虫的形态标准和流行种类。
    从2021年3月至2022年6月,从伊朗东部出没的住宅楼和公寓中收集了臭虫,包括北霍拉桑,KhorasanRazavi,以及锡斯坦和俾路支省。形态和形态计量学特征用于鉴定在种间和种内水平上收集的臭虫。
    从Bojnord收集了总共34个分离株,包括127个成年臭虫,马什哈德,Neishabur,Taibad,Sabzevar,Kashmer,Zahedan,Saravan,Rask,Pishin和Chabahar.其中,发现33个分离株(n=124)是热带臭虫,C.半翅目,一个种群(n=3)被鉴定为C.lectularius。对于C.lectularius和C.hemipterus,指数胸廓宽度/长度比从2.72到2.94和1.98到2.47计算,分别。后股骨的长宽比在C.hempterus为3.365,在C.lectularius为4.267。C.半翅目种群之间第三股骨的长/宽之比(F3l/w)不同,差异有统计学意义(P<0.05)。
    这项研究的结果表明,C.hemipterus是伊朗东部的优势臭虫物种,并为研究人员提供了更多的C.hemipterus形态标准,以鉴定该物种并确定当前和未来的种内变异。
    UNASSIGNED: The common bed bugs, Cimex lectularius, and tropical bed bugs, Cimex hemipterus are the primary species of public health importance in the family Cimicidae. This study aimed to determine the morphometric criteria and prevalent species of bed bugs in eastern Iran.
    UNASSIGNED: Bed bugs were collected from March 2021 to June 2022 from infested residential buildings and apartments in eastern Iran, including North Khorasan, Khorasan Razavi, and Sistan and Baluchistan Provinces. The morphological and morphometrical characteristics were used to identify collected bed bugs at inter- and intra-specific levels.
    UNASSIGNED: A total of 34 isolates comprising 127 adult bed bugs were collected from Bojnord, Mashhad, Neishabur, Taibad, Sabzevar, Kashmer, Zahedan, Saravan, Rask, Pishin and Chabahar. Of these, 33 isolates (n=124) were found to be tropical bed bugs, C. hemipterus, and one population (n=3) was identified as C. lectularius. The index pronotal width/length ratio was calculated from 2.72 to 2.94 and 1.98 to 2.47 for C. lectularius and C. hemipterus, respectively. The length/width ratio of the hind femur was 3.365 in C. hemipterus and 4.267 in C. lectularius. The ratio of length/width of the third femur (F3 l/w) between populations of C. hemipterus was different, and this difference was statistically significant (P< 0.05).
    UNASSIGNED: The results of this study indicated that C. hemipterus was the dominant bed bug species in the east of Iran and provided more morphometric criteria of C. hemipterus for researchers to identify the species and determine the intraspecific variations in the present and future.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

公众号