Results 101 to 110 of about 177,865 (310)

Ultrastructure of the spermatozoon of the Chinese water snake, Myrrophis (Enhydris) chinensis (Reptilia: Homalopsidae)

The European Zoological Journal, 2018
Identifying the polymorphism of the spermatozoon ultrastructure of squamates is vital for improving the accuracy of phylogenic analyses. Multiple studies have been conducted to distinguish the similarities and differences among the sperms of squamates ...
S.-L. Hao, Y.-P. Zhang
doaj   +1 more source

Effects of Shade Treatments on Photosynthetic Characteristics, Chloroplast Ultrastructure, and Physiology of Anoectochilus roxburghii

PLoS ONE, 2014
Anoectochilus roxburghii was grown under different shade treatments–50%, 30%, 20%, and 5% of natural irradiance–to evaluate its photosynthetic characteristics, chloroplast ultrastructure, and physiology.
Qingsong Shao, Hongzheng Wang, Haipeng Guo, Aicun Zhou, Yuqiu Huang, Yulu Sun, Ming-yan Li   +6 more
semanticscholar   +1 more source

Designer Dynamic DNA Nanoaggregate in Living Cell for Mitochondrial Energy Restriction

Advanced Science, EarlyView.
This study presents the Tech‐tetrahedron, a designer dynamic DNA nanoaggregate engineered for precise mitochondrial energy restriction. Its trinity‐functionalized design integrates navigable unit, telomerase‐activated latch, and self‐assembly module.
Ruijia Deng, Jing Sheng, Ben Niu, Wenjuan Fu, Yingjie Yang, Zuowei Xie, Shuang Xie, Yunxuan He, Meilin Gong, Jue Wang, Yan Pi, Ming Chen, Kai Chang   +12 more
wiley   +1 more source

Mechanical Activation of Piezo1 Drives Osteoarthritis Through Kdm5c‐Mediated Epigenetic Silencing

Advanced Science, EarlyView.
Excessive mechanical stress activates Piezo1, triggering Ca2+‐dependent cytoskeletal forces that deform the nucleus and reduce H3K4me3. Kdm5c demethylates H3K4me3 at Col2a1 and Runx3 promoters. Kdm5c knockout rescues degradation. Repurposed telmisartan directly inhibits Kdm5c, blocking this axis and showing disease‐modifying efficacy in mouse OA models
Tianyou Kan, Xuran Li, Han Wang, Lin Sun, Yao Wang, Jiangdong Wu, Junqi Cui, Yiqi Yang, Kai Yuan, Linyang Chu, Liao Wang, Hanjun Li, Mengning Yan, Zhifeng Yu   +13 more
wiley   +1 more source

Effect of lignin content on changes occurring in poplar cellulose ultrastructure during dilute acid pretreatment

Biotechnology for Biofuels, 2014
BackgroundObtaining a better understanding of the complex mechanisms occurring during lignocellulosic deconstruction is critical to the continued growth of renewable biofuel production.
Qining Sun, M. Foston, Xianzhi Meng, D. Sawada, S. Pingali, H. O’Neill, Hongjia Li, C. Wyman, P. Langan, A. Ragauskas, R. Kumar   +10 more
semanticscholar   +1 more source

Pericentrosomal Redistribution of the Endoplasmic Reticulum Ensures Organelle Symmetric Inheritance and Mitotic Progression

Advanced Science, EarlyView.
Upon mitotic entry, RTN4 relocalizes to the pericentrosomal region, forming a more tubular ER network around centrosomes. CDK1‐mediated phosphorylation of RTN4 increases its interaction with Rab11 GTPase, facilitating dynein‐dependent transport of RTN4 to the pericentrosomal region.
Xiangyu Xu, Yalin Liu, Rongyi Wang, Wenwen Xu, Hao Shi, Ning Huang, Junlin Teng, Jin Meng, Pengli Zheng, Jianguo Chen   +9 more
wiley   +1 more source

Desiccation stress and tolerance in green algae: consequences for ultrastructure, physiological and molecular mechanisms

Frontiers in Plant Science, 2013
Although most green algae typically occur in aquatic ecosystems, many species also live partly or permanently under aeroterrestrial conditions, where the cells are exposed to the atmosphere and hence regularly experience dehydration. The ability of algal
A. Holzinger, U. Karsten
semanticscholar   +1 more source

Targeting Lipopolysaccharide Transport Induces Membrane Lipid Remodeling and Sensitizes Acinetobacter baumannii to Colistin Treatment

Advanced Science, EarlyView.
This study identifies C4 as a lead inhibitor of the Lpt system. Notably, C4 potentiates colistin activity by disrupting LPS transport and remodeling phospholipid homeostasis, revealing a functional interplay between the Lpt and Mla systems. These findings establish a mechanistic link between Lpt inhibition and membrane lipid remodeling, positioning Lpt–
Jianya Luo, Hetianzi Zhang, Jinju Cai, Shuang Zhou, Haijie Zhang, Zhiqiang Wang, Yuan Liu   +6 more
wiley   +1 more source

Mapping residual organics and carbonate at grain boundaries and in the amorphous interphase in mouse incisor enamel

Frontiers in Physiology, 2015
Dental enamel has evolved to resist the most grueling conditions of mechanical stress, fatigue, and wear. Adding insult to injury, it is exposed to the frequently corrosive environment of the oral cavity.
Lyle M Gordon, Derk eJoester
doaj   +1 more source

Multi‐Component Functionalized Bifidobacterium Longum Hydrogel for Multi‐Target Integrated Therapy of Colitis‐Associated Anxiety and Depression

Advanced Science, EarlyView.
A pH/MMP dual‐responsive Bifidobacterium longum (BL) hydrogel (INPs@BL@Gel) functionalized with baicalin, tyrosine, and inulin is constructed. It enables gastric protection, inflammation‐targeted release, and prolonged intestinal colonization. By remodeling gut microbiota, elevating beneficial neuroactive metabolites (homovanillic acid, short‐chain ...
Shuo Zhang, Yujie Zhang, Jiansheng He, Shunlian Li, Qingyan Ma, Qiao Li, Yudan Zhang, Yiyang Wang, Shaobo Ma, Songyan Jin, Chune Li, Xueyong Xie, Hang Zhang, Junze Deng, Xueqin Song, Daocheng Wu, Xiancang Ma, Feng Zhu   +17 more
wiley   +1 more source