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文献分享 | J. Am. Chem. Soc. | 用于协助冷冻电镜成像膜囊泡的独立DNA折纸超晶格
文献分享 | J. Am. Chem. Soc. | 用于协助冷冻电镜成像膜囊泡的独立DNA折纸超晶格
今天分享一篇2024年2月份发表在 J. Am. Chem. Soc. 上的文章,该文的通讯作者是埃默里大学Wallace H.Coulte生物医学工程系的Yonggang Ke教授。Yonggang
李平课题组公众号 09-12
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文献分享 | Angew. Chem. Int. Ed. | 酶的协同作用:用于尿路感染  局部区域成像的细菌特异性分子探针
文献分享 | Angew. Chem. Int. Ed. | 酶的协同作用:用于尿路感染 局部区域成像的细菌特异性分子探针
今天分享一篇2024年6月发表在 Angew. Chem. Int. Ed.上的文章,该文的第一位通讯作者是南洋理工大学的邢本刚教授,邢本刚教授主要从事化学生物学、生物医学荧光成像和纳米医学等方面的研
李平课题组公众号 09-12
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【Adv.Mater】拓展我们的视野:细菌研究中的聚集诱导释放(AIE)材料
【Adv.Mater】拓展我们的视野:细菌研究中的聚集诱导释放(AIE)材料
Expanding Our Horizons: AIE Materials in Bacterial ResearchAdvanced Materials ( IF 27.4 ) Pub Date :
纳米材料催化公众号 09-12
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北京林业大学博士生一作在一区Top期刊(IF=7.7)发表研究成果!
北京林业大学博士生一作在一区Top期刊(IF=7.7)发表研究成果!
芳香是植物的重要观赏性状,由许多挥发性次生代谢产物组合形成,包括萜类化合物、苯环/苯丙素类化合物和脂肪酸类衍生物等。神农香菊是菊科菊属的一个狭布野生种,分布在湖北神农架林区的高海拔地带(约2000米以
溪远讲植物科学公众号 09-12
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中国现代农业联合研究生院有了新进展
中国现代农业联合研究生院有了新进展
9月6日,河南农业大学发布《李成伟一行赴郑东新区沟通对接工作》,指出:校党委书记李成伟一行前往郑东新区管委会,就中国现代农业联合研究生院象湖校区建设、乡村振兴校地合作等事宜进行沟通。这意味着中国现代农
溪远讲植物科学公众号 09-12
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西北农林科技大学博士生共同一作在植物科学一区Top期刊(IF=8.3)发表研究成果!
西北农林科技大学博士生共同一作在植物科学一区Top期刊(IF=8.3)发表研究成果!
植物衰老受到内源信号和外界环境因素的共同调控。光照缺乏等非生物胁迫诱导叶片早衰,影响作物产量与品质形成。然而,胁迫诱导衰老的分子机制尚不完全明确。近日,西北农林科技大学郁飞/刘夏燕团队在New Phy
溪远讲植物科学公众号 09-12
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创造历史!SpaceX开启人类首次商业太空行走,自研宇航服EVA迎接首次“实战”测试
创造历史!SpaceX开启人类首次商业太空行走,自研宇航服EVA迎接首次“实战”测试
贾里德·艾萨克曼 (Jared Isaacman) 成功出舱 来源:SpaceX直播莎拉·吉利斯(Sarah Gillis)成功出舱 来源:SpaceX直播报道 科研圈北京时间 9 月 12 日,人类
环球科学科研圈公众号 09-12
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24小时热门|两项《自然》研究:年轻时吃高脂饮食,后果比你想的更可怕|隆基绿能公司第一单位发Nature,PCE高达33.89%
24小时热门|两项《自然》研究:年轻时吃高脂饮食,后果比你想的更可怕|隆基绿能公司第一单位发Nature,PCE高达33.89%
「领研网」今日热词:高脂饮食、血脂、胆固醇、动脉粥样硬化、太阳能电池、钙钛矿-硅串联电池、Scaling Law、规划搜索、全眼移植、视网膜、非美国公民投票、美国选举、Self-Play、强化学习、T
环球科学科研圈公众号 09-12
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技能提升 | 2025年国自然基金标书一对一指导课程
技能提升 | 2025年国自然基金标书一对一指导课程
★ 课程目标 ★机会总是留给有准备的人。本次一对一的主要特色就是着重教会学员如何进行标书的准备工作以及进行标书撰写全程的跟进,包括:如何从你已有基础中“抽丝剥茧”,提炼出足够说服评审专家的的核心创新点
brainnew神内神外公众号 09-12
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【浙二神外周刊】儿童第四脑室髓母细胞瘤一例
【浙二神外周刊】儿童第四脑室髓母细胞瘤一例
来源:浙二神外周刊前言小儿神经外科泛指18岁以下需外科治疗的神经系统疾病的亚专科。主要疾病范围包括:儿童脑肿瘤(颅咽管瘤、生殖细胞瘤、胶质瘤等)、儿童脑血管病(脑动静脉畸形、烟雾病、海绵状血管瘤等)、
brainnew神内神外公众号 09-12
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Neuron:叶克强/武胜昔/项捷团队构建帕金森病“肠脑轴”小鼠新模型
Neuron:叶克强/武胜昔/项捷团队构建帕金森病“肠脑轴”小鼠新模型
1 (增补印刷)神经科学实用图书推荐——《鼠脑应用解剖学》【科学出版社】2 科研工具书《精神疾病啮齿类动物模型及行为学实验》 崔东红/徐林著 3 重磅新书推荐 |《奈特神经病学》(第3版)帕金森病是最
brainnew神内神外公众号 09-12
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文献分享 | 转录因子REPLUMLESS的自然变异有助于拟南芥生长和抗性增强
文献分享 | 转录因子REPLUMLESS的自然变异有助于拟南芥生长和抗性增强
本期分享的文献是2022年9月发表在《Plant Communications》期刊上的一篇研究性论文。在自然界中,植物经常受到例如病原菌、昆虫和动物的侵袭,因植物从外界吸收的能量是有限的,因此当植物
林木多组学研究公众号 09-12
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文献分享丨ACS Nano :具有高胰岛素负荷能力的葡萄糖反应微针贴片对小鼠和小型猪实现长期血糖控制
文献分享丨ACS Nano :具有高胰岛素负荷能力的葡萄糖反应微针贴片对小鼠和小型猪实现长期血糖控制
引言糖尿病作为一种慢性糖代谢紊乱影响着全球超过5.37亿人,它会对血管产生不利影响,并导致严重并发症,包括心血管疾病、肾衰竭和神经损伤。目前1型和晚期2型糖尿病的标准治疗是在频繁监测血糖的基础上多次皮
YaolabHNU公众号 09-12
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【科技前沿】Cell Discov|李虎/张勇/朱大海团队揭示亚精胺抗衰老新机制,激活肌肉干细胞,改善衰老的肌肉功能
【科技前沿】Cell Discov|李虎/张勇/朱大海团队揭示亚精胺抗衰老新机制,激活肌肉干细胞,改善衰老的肌肉功能
成年干细胞通常处于静息状态,只有在需要维持组织稳态或应对组织损伤时才重新进入细胞周期。骨骼肌稳态在肌肉再生和生理老化过程中依赖于驻留肌肉干细胞,也被称为卫星细胞(Satellite Cell,SC)。
中国生物物理学会公众号 09-12
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FSHW | 养殖大鲵骨肽改善高尿酸血症引起的肾脏损伤
FSHW | 养殖大鲵骨肽改善高尿酸血症引起的肾脏损伤
点击上方蓝字关注我们!本文系Food Science and Human Wellness原创编译,欢迎分享,转载请授权。01Introduction高尿酸血症(HUA)是一种由嘌呤代谢紊乱引起的代谢
食品科学杂志公众号 09-12
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敬匠心·师者风采 | 孙大文院士:勇攀食品工程领域“世界之巅”
敬匠心·师者风采 | 孙大文院士:勇攀食品工程领域“世界之巅”
“立德树人,共筑师魂!亦师亦友伴花开 一束微光渐斑斓” 何为"大先生"? “心有大我、至诚报国的理想信念,言为士则、行为世范的道德情操,启智润心、因材施教的育人智慧,勤学笃行、求是创新的躬耕态度,乐
食品科学杂志公众号 09-12
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FSAP | 成都大学王金秋副教授:高压均质诱导低密度脂蛋白重构及其在负载辣椒红中的应用
FSAP | 成都大学王金秋副教授:高压均质诱导低密度脂蛋白重构及其在负载辣椒红中的应用
成都大学食品生物与工程学院系统食品学创新团队肖迪、胡敢特聘研究员(共同一作)等通过高压均质(high pressurehomogenization,HPH)诱导低密度脂蛋白(low-density
食品科学杂志公众号 09-12
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《食品科学》:东北农业大学李柏良教授、郭增旺副教授等:乳脂肪球膜的结构特性及其体内代谢研究进展
《食品科学》:东北农业大学李柏良教授、郭增旺副教授等:乳脂肪球膜的结构特性及其体内代谢研究进展
母乳是婴儿最理想的食物,母乳中的脂肪能够为婴儿提供生长发育所需能量的40%~55%。乳脂肪以脂肪球(MFG)的形式稳定存在乳清相中,表面包裹着具有乳化作用的乳脂肪球膜(MFGM),防止MFG的絮凝和聚
食品科学杂志公众号 09-12
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《食品科学》:大连海洋大学周慧博士等:用于分离单糖与寡糖的亲水色谱材料制备及应用进展
《食品科学》:大连海洋大学周慧博士等:用于分离单糖与寡糖的亲水色谱材料制备及应用进展
在食品科学、医药科学、生命科学等领域中,糖类化合物起着不可或缺的作用。按组成糖类化合物可分为3 类:单糖、寡糖和多糖。自然界中存在的天然寡糖很少,仅有极少数的植物含有天然的功能性寡糖。更多的单糖、寡糖
食品科学杂志公众号 09-12
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武大邓红兵教授Nano Letters:可持续发展时代中甲壳素/壳聚糖纳米纤维研究进展:从结构调控到功能应用
武大邓红兵教授Nano Letters:可持续发展时代中甲壳素/壳聚糖纳米纤维研究进展:从结构调控到功能应用
随着全球对气候变化和环境问题的关注日益增强,低碳材料在可持续未来中的重要性日趋凸显。甲壳素作为一种可再生的天然高分子材料,有望成为下一代功能材料的绿色基石。受生物体内纤维在多尺度下构建层级结构并由此决
BioMed科技公众号 09-12
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Medical student non-modifiable risk factors and USMLE Step 1 exam score.
IF 4.6 2区 医学 Q1 Social Sciences Pub Date : 2024-12-31 DOI: 10.1080/10872981.2024.2327818

For diversity to exist in the medical graduate workforce, students from all backgrounds should have equitable opportunities of employment. Specialties have utilized a minimal threshold for USMLE Step 1 score when screening applicants for residency interviews. The OHSU SOM class of 2021 completed a 14-question voluntary survey on their Step 1 score and the following non-modifiable risk factors: Adverse Childhood Experience score (ACEs), sex, gender, Underrepresented in Medicine status (URiM), family income during adolescence, highest degree held by a guardian, discrimination experience during medical school, federal/state assistance use, and rural versus urban primary home. Descriptive statistics and unadjusted risk ratios were applied to study the relation between Step 1 score and non-modifiable risk factors as well as certain non-modifiable risk factors and ACEs ≥ 3. The mean Step 1 score was 230 (213, 247). Of the students, 28.2% identified ACEs ≥ 3, 13.6% were considered URiM, and 65.4% were female. URiM were 2.34 (1.30, 4.23),females were 2.77 (1.06-7.29), and those who experienced discrimination in medical school were 4.25 (1.85, 9.77) times more likely to have ACEs ≥ 3. Students who had ACEs ≥ 3 were 3.58 (1.75, 7.29) times less likely to meet a minimal threshold for residency interviews of 220. These are the first results to demonstrate a relationship between Step 1 score and ACEs. Those who identified as URiM, females, and those who experienced discrimination in medical school were at a higher risk of ACEs of ≥ 3. Step 1 transitioned to pass/fail in January 2022. However, the first application cycle that residencies will see pass/fail scoring is 2023-2024, and fellowships will continue to see scored Step 1 until, at the earliest, the 2026-2027 application cycle. These data contribute to a foundation of research that could apply to Step 2CK testing scores, and help to inform decisions about the diversity and equity of the residency interview process.

Unpacking the perceptions and experiences of student facilitators in interprofessional education: a qualitative study.
IF 4.6 2区 医学 Q1 Social Sciences Pub Date : 2024-12-31 DOI: 10.1080/10872981.2024.2330257

Enhancing health professional students' effective learning and collaborative practice requires a deep understanding of strategies for facilitating interprofessional learning. While faculty members and clinical preceptors are recognized as facilitators in interprofessional education (IPE), there is limited knowledge about the impact of student facilitators' engagement in IPE. Accordingly, this study aims to explore the perceptions and experiences of student facilitators in IPE. Thirteen student facilitators were recruited to lead an interprofessional learning program, and they were subsequently invited to participate in one-on-one interviews. An interview guide was developed to explore their motivations, expectations, engagement, effectiveness, and achievements in IPE facilitation. Thematic analysis was conducted using MAXQDA software to analyze the student facilitators' experiences and perceptions. Eight interviewees from various disciplines, including Medicine, Nursing, Pharmacy, Speech and Hearing Sciences, and Social Work, took part in the study. The findings revealed that student facilitators highly valued their IPE facilitation experience, which aligned with their expectations and led to the creation of social networks, increased confidence, improved understanding of other professions, and the development of lifelong skills. Furthermore, the student facilitators demonstrated cognitive and social congruence by establishing a relaxed learning environment, displaying empathetic and supportive behaviors, and using inclusive language to engage IPE learners in group discussions. This study provides a comprehensive understanding of the role of student facilitators in IPE, contributing to the evolving literature on IPE. A conceptual framework was developed to explore the entire facilitation experience, encompassing the motivations and expectations of student facilitators, their engagement and effectiveness, and the observed achievements. These findings can inform the development of peer teaching training in IPE and stimulate further research in identifying relevant facilitator competencies for optimal delivery of IPE.

A phase 3, single-arm, open-label study to evaluate the safety, tolerability, and immunogenicity of a 15-valent pneumococcal conjugate vaccine, V114, in a 3+1 regimen in healthy infants in South Korea (PNEU-PED-KOR).
IF 4.8 4区 医学 Q2 Pharmacology, Toxicology and Pharmaceutics Pub Date : 2024-12-31 DOI: 10.1080/21645515.2024.2321035

There is an ongoing burden of pneumococcal disease in children despite the use of pneumococcal conjugate vaccines (PCVs). This phase 3, open-label, single-arm, multisite, descriptive study was designed to evaluate the safety and immunogenicity of a 3 + 1 regimen of V114 (VAXNEUVANCE™), a 15-valent PCV, in South Korean infants and toddlers. Adverse events (AEs) were reported for 14 d following any vaccination, and throughout the study period for serious AEs. Serotype-specific immunoglobulin G (IgG) response rates (proportion of participants meeting an IgG threshold value of ≥0.35 μg/mL) and geometric mean concentrations (GMCs) for the 15 serotypes at 30 d postdose 3 (PD3) and at 30 d postdose 4 (PD4) were evaluated as endpoints. Healthy infants enrolled at 42-90 d after birth were vaccinated with V114 (N = 57). The most commonly reported AEs were those solicited in the trial. The majority of reported AEs were transient and of mild or moderate intensity. Few serious AEs were reported; none were vaccine related. No participants died nor discontinued the study vaccine because of an AE. V114 was immunogenic for all 15 serotypes contained in the vaccine, as assessed by IgG response rates at 30 d PD3 and IgG GMCs at 30 d PD3 and at 30 d PD4. V114 was well tolerated and immunogenic when administered as a 3 + 1 regimen in healthy South Korean infants and toddlers.

Formulation development of a stable influenza recombinant neuraminidase vaccine candidate.
IF 4.8 4区 医学 Q2 Pharmacology, Toxicology and Pharmaceutics Pub Date : 2024-12-31 DOI: 10.1080/21645515.2024.2304393

Current influenza vaccines could be augmented by including recombinant neuraminidase (rNA) protein antigen to broaden protective immunity and improve efficacy. Toward this goal, we investigated formulation conditions to optimize rNA physicochemical stability. When rNA in sodium phosphate saline buffer (NaPBS) was frozen and thawed (F/T), the tetrameric structure transitioned from a "closed" to an "open" conformation, negatively impacting functional activity. Hydrogen deuterium exchange experiments identified differences in anchorage binding sites at the base of the open tetramer, offering a structural mechanistic explanation for the change in conformation and decreased functional activity. Change to the open configuration was triggered by the combined stresses of acidic pH and F/T. The desired closed conformation was preserved in a potassium phosphate buffer (KP), minimizing pH drop upon freezing and including 10% sucrose to control F/T stress. Stability was further evaluated in thermal stress studies where changes in conformation were readily detected by ELISA and size exclusion chromatography (SEC). Both tests were suitable indicators of stability and antigenicity and considered potential critical quality attributes (pCQAs). To understand longer-term stability, the pCQA profiles from thermally stressed rNA at 6 months were modeled to predict stability of at least 24-months at 5°C storage. In summary, a desired rNA closed tetramer was maintained by formulation selection and monitoring of pCQAs to produce a stable rNA vaccine candidate. The study highlights the importance of understanding and controlling vaccine protein structural and functional integrity.

Chicoric acid advanced PAQR3 ubiquitination to ameliorate ferroptosis in diabetes nephropathy through the relieving of the interaction between PAQR3 and P110α pathway.
IF 12.3 4区 医学 Q3 Medicine Pub Date : 2024-12-31 DOI: 10.1080/10641963.2024.2326021

Purpose: This study aimed to examine the impact of CA on DN and elucidate its underlying molecular mechanisms of inflammation.

Methods: We fed C57BL/6 mice injected with streptozotocin to induce diabetes. In addition, we stimulated NRK-52E cells with 20 mmol/L d-glucose to mimic the diabetic condition.

Results: Our findings demonstrated that CA effectively reduced blood glucose levels, and improved DN in mice models. Additionally, CA reduced kidney injury and inflammation in both mice models and in vitro models. CA decreased high glucose-induced ferroptosis of NRK-52E cells by inducing GSH/GPX4 axis. Conversely, the ferroptosis activator or the PI3K inhibitor reversed positive effects of CA on DN in both mice and in vitro models. CA suppressed PAQR3 expression in DN models to promote PI3K/AKT activity. The PAQR3 activator reduced the positive effects of CA on DN in vitro models. Moreover, CA directly targeted the PAQR3 protein to enhance the ubiquitination of the PAQR3 protein.

Conclusion: Overall, our study has uncovered that CA promotes the ubiquitination of PAQR3, leading to the attenuation of ferroptosis in DN. This effect is achieved through the activation of the PI3K/AKT signaling pathways by disrupting the interaction between PAQR3 and the P110α pathway. These findings highlight the potential of CA as a viable therapeutic option for the prevention of DN and other forms of diabetes.

Impact of COVID-19 vaccination status on hospitalization and disease severity: A descriptive study in Nagasaki Prefecture, Japan.
IF 4.8 4区 医学 Q2 Pharmacology, Toxicology and Pharmaceutics Pub Date : 2024-12-31 DOI: 10.1080/21645515.2024.2322795

Coronavirus disease 2019 (COVID-19) was extraordinarily harmful, with high rates of infection and hospitalization. This study aimed to evaluate the impact of COVID-19 vaccination status and other factors on hospitalization and disease severity, using data from Nagasaki Prefecture, Japan. Confirmed cases of COVID-19 infection with vaccination status were included and the differences in characteristics between different vaccination statuses, hospitalization or not, and patients with varying levels of disease severity were analyzed. Furthermore, logistic regression was used to calculate odds ratio (ORs) and 95% confidence intervals (CI) to evaluate the association of various factors with hospitalization and disease severity. From March 14, 2020 to August 31, 2022, 23,139 patients were unvaccinated 13,668 vaccinated the primary program with one or two doses, and 4,575 completed the booster. Vaccination reduced the risk of hospitalization with an odd ratio of 0.759 (95% CI: 0.654-0.881) and the protective effect of completed booster vaccination was more pronounced (OR: 0.261, 95% CI: 0.207-0.328). Similarly, vaccination significantly reduced the risk of disease severity (vaccinated primary program: OR: 0.191, 95% CI: 0.160-0.228; completed booster vaccination: OR: 0.129, 95% CI: 0.099-0.169). Overall, unvaccinated, male, elderly, immunocompromised, obese, and patients with other severe illness factors were all risk factors for COVID-19-related hospitalization and disease severity. Vaccination was associated with a decreased risk of hospitalization and disease severity, and highlighted the benefits of completing booster.

Opportunities for HPV vaccine education in school-based immunization programs in British Columbia, Canada: A qualitative study.
IF 4.8 4区 医学 Q2 Pharmacology, Toxicology and Pharmaceutics Pub Date : 2024-12-31 DOI: 10.1080/21645515.2024.2326779

Despite the availability of school-based immunization programs (SBIPs) in Canada, human papillomavirus (HPV) vaccine uptake remains suboptimal. Vaccine education may improve vaccine uptake among adolescents. The objective of this qualitative study was to identify opportunities for HPV vaccine education in British Columbia, Canada, by exploring the perspectives of students, parents, school staff, and public health nurses on the current SBIP. Individual semi-structured interviews were conducted with adult participants and focus groups were conducted with grade 6 students between November 2019 and May 2020. The interviews and focus groups were transcribed and then analyzed using reflexive thematic analysis. Opportunities for HPV vaccine education were identified in three themes: 1) making SBIPs student-centered; 2) adopting a collaborative and interdisciplinary approach to vaccine education; and 3) actualizing parent education opportunities. Broad support existed for a formal, collaborative HPV grade 6 vaccine curriculum delivered by teachers and public health nurses to provide evidence-based health information. Participants voiced that the curriculum should integrate students' perspectives on topics of interest and address needle associated pain and anxiety. Parents were identified as the primary vaccine decisionmakers, therefore, participants stated it was crucial to also provide parent-directed vaccine education as part of SBIP. Our findings support the development of a collaborative HPV vaccine curriculum directed to and informed by students and parents to buttress current SBIPs in British Columbia.

COVID-19 vaccination perspectives among patients with Long COVID: A qualitative study.
IF 4.8 4区 医学 Q2 Pharmacology, Toxicology and Pharmaceutics Pub Date : 2024-12-31 DOI: 10.1080/21645515.2024.2327663

Individuals who have Long COVID may have unique perspectives about COVID-19 vaccination due to the significant impact that COVID-19 has had on their lives. However, little is known about the specific vaccination perspectives among this patient population. The goal of our study was to improve our understanding of perspectives about COVID-19 vaccines among individuals with Long COVID. Interviews were conducted with patients receiving care at a post-COVID recovery clinic. Deductive thematic analysis was used to characterize participant perspectives according to the vaccine acceptance continuum framework, which recognizes a spectrum from vaccine acceptance to refusal. From interviews with 21 patients, we identified perspectives across the continuum of vaccine acceptance. These perspectives included acceptance of vaccines to prevent future illness, concerns about vaccine side effects on Long COVID symptoms, and refusal of vaccines due to perceived natural immunity. A limitation of our study is that these perspectives are specific to individuals receiving care at one post-COVID recovery clinic. In conclusion, our study demonstrates that some patients with Long COVID are uncertain about COVID-19 vaccines and boosters but may also be amenable to conversations that impact future vaccination acceptance. Patient perspectives should be considered when communicating recommendations for COVID-19 vaccinations to this population.

Financial barriers and inequity in medical education in India: challenges to training a diverse and representative healthcare workforce.
IF 4.6 2区 医学 Q1 Social Sciences Pub Date : 2024-12-31 DOI: 10.1080/10872981.2024.2302232

India has been historically challenged by an insufficient and heterogeneously clustered distribution of healthcare infrastructure. While resource-limited healthcare settings, such as major parts of India, require multidisciplinary approaches for improvement, one key approach is the recruitment and training of a healthcare workforce representative of its population. This requires overcoming barriers to equity and representation in Indian medical education that are multi-faceted, historical, and rooted in inequality. However, literature is lacking regarding the financial or economic barriers, and their implications on equity and representation in the Indian allopathic physician workforce, which this review sought to describe. Keyword-based searches were carried out in PubMed, Google Scholar, and Scopus in order to identify relevant literature published till November 2023. This state-of-the-art narrative review describes the existing multi-pronged economic barriers, recent and forthcoming changes deepening these barriers, and how these may limit opportunities for having a diverse workforce. Three sets of major economic barriers exist to becoming a specialized medical practitioner in India - resources required to get selected into an Indian medical school, resources required to pursue medical school, and resources required to get a residency position. The resources in this endeavor have historically included substantial efforts, finances, and privilege, but rising barriers in the medical education system have worsened the state of inequity. Preparation costs for medical school and residency entrance tests have risen steadily, which may be further exacerbated by recent major policy changes regarding licensing and residency selection. Additionally, considerable increases in direct and indirect costs of medical education have recently occurred. Urgent action in these areas may help the Indian population get access to a diverse and representative healthcare workforce and also help alleviate the shortage of primary care physicians in the country. Discussed are the reasons for rural healthcare disparities in India and potential solutions related to medical education.

Enhanced immunity against SARS-CoV-2 in returning Chinese individuals.
IF 4.8 4区 医学 Q2 Pharmacology, Toxicology and Pharmaceutics Pub Date : 2024-12-31 DOI: 10.1080/21645515.2023.2300208

Global COVID-19 vaccination programs effectively contained the fast spread of SARS-CoV-2. Characterizing the immunity status of returned populations will favor understanding the achievement of herd immunity and long-term management of COVID-19 in China. Individuals were recruited from 7 quarantine stations in Guangzhou, China. Blood and throat swab specimens were collected from participants, and their immunity status was determined through competitive ELISA, microneutralization assay and enzyme-linked FluoroSpot assay. A total of 272 subjects were involved in the questionnaire survey, of whom 235 (86.4%) were returning Chinese individuals and 37 (13.6%) were foreigners. Blood and throat swab specimens were collected from 108 returning Chinese individuals. Neutralizing antibodies against SARS-CoV-2 were detected in ~90% of returning Chinese individuals, either in the primary or the homologous and heterologous booster vaccination group. The serum NAb titers were significantly decreased against SARS-CoV-2 Omicron BA.5, BF.7, BQ.1 and XBB.1 compared with the prototype virus. However, memory T-cell responses, including specific IFN-γ and IL-2 responses, were not different in either group. Smoking, alcohol consumption, SARS-CoV-2 infection, COVID-19 vaccination, and the time interval between last vaccination and sampling were independent influencing factors for NAb titers against prototype SARS-CoV-2 and variants of concern. The vaccine dose was the unique common influencing factor for Omicron subvariants. Enhanced immunity against SARS-CoV-2 was established in returning Chinese individuals who were exposed to reinfection and vaccination. Domestic residents will benefit from booster homologous or heterologous COVID-19 vaccination after reopening of China, which is also useful against breakthrough infection.

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