Results 61 to 70 of about 914,664 (294)

Sexual size dimorphism in mammals is associated with changes in the size of gene families related to brain development

Nature Communications
In mammals, sexual size dimorphism often reflects the intensity of sexual selection, yet its connection to genomic evolution remains unexplored. Gene family size evolution can reflect shifts in the relative importance of different molecular functions ...
Benjamin Padilla-Morales, Alin P. Acuña-Alonzo, Huseyin Kilili, Atahualpa Castillo-Morales, Karina Díaz-Barba, Kathryn H. Maher, Laurie Fabian, Evangelos Mourkas, Tamás Székely, Martin-Alejandro Serrano-Meneses, Diego Cortez, Sergio Ancona, Araxi O. Urrutia   +12 more
doaj   +1 more source

Sexual dimorphism in the Arachnid orders

PeerJ, 2018
Sexual differences in size and shape are common across the animal kingdom. The study of sexual dimorphism (SD) can provide insight into the sexual- and natural-selection pressures experienced by males and females in different species. Arachnids are diverse, comprising over 100,000 species, and exhibit some of the more extreme forms of SD in the animal ...
Callum J. McLean, Russell J. Garwood, Charlotte A. Brassey   +2 more
openaire   +5 more sources

Bone Marrow Macrophage STING Signaling is a Direct Nexus Linking Marrow Adipose Expansion to NAD+ Depletion and Osteogenic Decline in Skeletal Aging

Advanced Science, EarlyView.
This study reveals that during skeletal aging, bone marrow adipocyte‐derived sDPP4 primes STING signaling in macrophages. In combination with mitochondrial DNA, this signaling activates CD38 and depletes local NAD+/NMN, thereby impairing osteogenesis.
Zhichao Li, Kuanhui Gao, Mengjie Wang, Songlin Liang, Dandan Li, Guoqing Tan, Haipeng Xue, Yujie Liu, Peng Zhang, Zhanwang Xu, Wenxiang Cheng, Yongjun Wang, Nianhu Li   +12 more
wiley   +1 more source

Habitat‐Driven Sexual Dimorphism in Triplophysa strauchii Between Oxbow Lake and Stream: A Geometric Morphometric Analysis

Ecology and Evolution
Sexual dimorphism is widespread among fish species, yet the ecological factors shaping this phenomenon remain poorly understood. Using traditional morphometric analyses of 319 specimens together with geometric morphometrics, this study examined sexual ...
Yan Li, Ya‐Han Meng, Wei‐Zhen Gao, Lei Shi   +3 more
doaj   +1 more source

Sexual Dimorphism in the Fly Brain

Current Biology, 2010
Sex-specific behavior may originate from differences in brain structure or function. In Drosophila, the action of the male-specific isoform of fruitless in about 2000 neurons appears to be necessary and sufficient for many aspects of male courtship behavior.
Sebastian Cachero, Aaron D. Ostrovsky, Jai Y. Yu, Barry J. Dickson, Gregory S.X.E. Jefferis   +4 more
openaire   +4 more sources

A Gut‐Brain Axis Underlying Succinate‐Associated Compulsive‐Like Behavior

Advanced Science, EarlyView.
Gut‐derived succinate is associated with an excitatory‐inhibitory imbalance in dmPFC glutamatergic neurons, involving microglial SUCNR1 activation and vagal afferent signaling via upregulated gut 5‐HT4 receptors along the DVC‐CeA‐dmPFC circuit, changes that are linked to excessive compulsive‐like behavior.
Yi Li, Ying‐Dan Zhang, Wei Wang, Xin‐Yi Wu, Di Li, Xin Gong, Fei Tian, Meng‐Yu Dai, Jian Gao, Zi‐Feng Zheng, Zi‐Yang Bi, Dong‐Dong Shi, Zhen Wang   +12 more
wiley   +1 more source

Sexual dimorphism in the incidence of human cancers

BMC Cancer, 2019
Background Sex differences in the incidences of cancers become a critical issue in both cancer research and the development of precision medicine. However, details in these differences have not been well reported.
Daoshan Zheng, Justyna Trynda, Cecilia Williams, Jeremy A. Vold, Justin H. Nguyen, Denise M. Harnois, Sanjay P. Bagaria, Sarah A. McLaughlin, Zhaoyu Li   +8 more
doaj   +1 more source

A Hepatocyte‐to‐Stellate Cell Axis Couples Alternate‐Day Fasting to Liver Fibrosis Resolution via ATG7 S‐Nitrosylation

Advanced Science, EarlyView.
Alternate‐day fasting suppresses mitochondrial complex II assembly via SDHAF4 to upregulate hepatocyte eNOS. The resulting nitric oxide S‐nitrosylates ATG7 at C184 in hepatic stellate cells, restraining autophagic flux and preventing their profibrotic activation.
Xueqiang Wang, Mengqi Zeng, Cunxiao Sun, Yuhan Gou, Zhaode Feng, Weiqiang Lv, Chaoying Yan, Hansen Wu, Pengfei Zhang, Jie Xu, Ke Cao, Hao Li, Mingge Ding, Zhongbo Liu, Xing Zhang, Jiankang Liu, Xuan Zou, Zhihui Feng   +17 more
wiley   +1 more source

Sexual dimorphism of head, teeth, flipper and body size in northern elephant seals (Mirounga angustirostris) throughout ontogeny [PDF]

Royal Society Open Science
Sexual dimorphism, the difference in appearance between males and females of the same species, can shape physiology, behaviour and fitness. Yet, few species have age- and sex-specific data to characterize its development.
Madeleine R. Stewart, Stephanie K. Adamczak, Salma T. Abdel-Raheem, Daniel P. Costa, Roxanne S. Beltran   +4 more
doaj   +1 more source

A genetic test of sexual size dimorphism in pre-emergent chinook salmon. [PDF]

PLoS ONE, 2013
Sex differences in early development may play an important role in the expression of sexual size dimorphism at the adult stage. To test whether sexual size dimorphism is present in pre-emergent chinook salmon (Oncorhynchus tshawytscha), alevins were ...
Tosh W Mizzau, Shawn R Garner, Stephen A C Marklevitz, Graham J Thompson, Yolanda E Morbey   +4 more
doaj   +1 more source