Results 41 to 50 of about 1,377 (227)

Investigations Into the Metabolism and Elimination of Tesofensine in Human Urine

Drug Testing and Analysis, EarlyView.
This study investigated tesofensine metabolism and urinary elimination after a single 483 μg intake via a dietary supplement. In six volunteers, urine was collected up to 659 h. LC‐HRMS/MS identified four tentative metabolites; maximum urinary concentrations reached 4 ng/mL within 4–48 h.
O. Krug, A. Thomas, M. Thevis
wiley   +1 more source

Identification of Synthetic Urine by Analysis of Stable Carbon and Nitrogen Isotope Ratios and Comparison to Established GC‐MS/MS and LC‐MS/MS Analysis

Drug Testing and Analysis, EarlyView.
This study compared GC‐MS/MS, EA‐IRMS, and LC‐MS/MS for detecting synthetic and manipulated urine samples in doping control and forensic analysis. EA‐IRMS proved particularly effective for identifying mixtures of synthetic and authentic urine, providing a reliable complement to established authenticity testing methods.
Frank Hülsemann, Laura Franke, Dirk K. Wissenbach, Gregor Fußhöller, Mario Thevis   +4 more
wiley   +1 more source

In utero and childhood DDT, DDE, PBDE and PCBs exposure and sex hormones in adolescent boys: The CHAMACOS study [PDF]

, 2017
Dichlorodiphenyltrichloroethane (DDT), polybrominated diphenyl ether (PBDE) flame retardants, and polychlorinated biphenyls (PCBs) are believed to be endocrine-disrupting chemicals (EDCs) in humans and animals. The purpose of this study is to examine the
Eskenazi, Brenda, Lustig, Robert H, Harley, Kim G, Kogut, Katherine, Bradman, Asa, Rauch, Stephen A, Sjödin, Andreas, Tenerelli, Rachel, Huen, Karen, Holland, Nina T   +9 more
core   +1 more source

Detection of Testosterone Esters in Urine: Evidence of Trace‐Level Detectability in Doping Control Samples

Drug Testing and Analysis, EarlyView.
An ultrasensitive LC‐MS/MS method for detecting testosterone esters (T‐esters) in urine at sub–pg/mL levels is presented. This approach, employing Girard P derivatization, provides the first evidence of T‐esters' trace‐level detectability in human urine.
Daniel Pecher, Guro Forsdahl, Biljana Stojanovic, Günter Gmeiner   +3 more
wiley   +1 more source

Protective Effects of Fenugreek and Stevia Extracts on Dexamethasone‐Induced Testicular Damage in a Rat Model

Food Safety and Health, EarlyView.
Fenugreek and stevia extracts protect against dexamethasone‐induced testicular damage in male rats by enhancing antioxidant defenses, improving sperm quality, and restoring hormonal balance, highlighting their potential as natural therapeutics for preventing corticosteroid‐induced reproductive toxicity.
Mosab Gad, Medhat Ibrahim A. Omar, Mohammed I. Elkhateeb, Ahmed A. Zaky   +3 more
wiley   +1 more source

Sexual dimorphism in hormone–gut microbiome associations across reproductive states in wild giant pandas

iMetaOmics, EarlyView.
Gut microbiota–host endocrine interactions in wild mammals remain poorly understood. Giant pandas experience seasonal dietary shifts and constrained annual reproduction, offering an ideal model to investigate microbiome–endocrine coupling. We integrated fecal hormone profiling, microsatellite‐based individual identification, and gut microbiome ...
Qinlong Dai, Xinyuan Cui, Chenyi Gao, Xiaoxiao Tang, Kaizhi Wen, Minhui Shi, Chen Zhang, Yue Liu, Xinru Yang, Qiuyu Huang, Lifeng Zhu   +10 more
wiley   +1 more source

Complement C3 mediates adolescent social isolation‐induced hippocampal synaptic deficits and sex‐specific emotional dysfunction

Interdisciplinary Medicine, EarlyView.
Adolescent social isolation disrupts hippocampal function and exacerbates emotional symptoms, with sex‐specific patterns, as shown by human studies. In mice, social isolation decreased hippocampal synaptic density and calcium signaling, upregulated complement proteins, and activated complement‐mediated microglial synaptic phagocytosis.
Yuwan Qi, Siying Weng, Qiao Yin, Mengqi Li, Liang Shen, Enyou Qiao, Lu Gao, Yihan Wang, Yuxuan Li, Weifeng Luo, Qilin Zhang, Jing Wang, Jianfeng Feng, Qifei Cong   +13 more
wiley   +1 more source

Environ Health Perspect [PDF]

BackgroundPersistent pollutants, such as polychlorinated biphenyls (PCBs), affect endocrine function. Human exposure to polybrominated diphenyl ethers (PBDEs), which are similar in structure to PCBs, has increased recently, but health effects have not ...

core  

Effects of acute postnatal exposure to 3,3′,4,4′-tetrachlorobiphenyl on sperm function and hormone levels in adult rats

, 2014
[[abstract]]Polychlorinated biphenyls (PCBs) are considered potential endocrine disruptors due to their ability to act as estrogens, antiestrogens and goitrogens.
Hsu, Ping-Chi;Guo, Yueliang Leon;Li, Mei-Hui
core   +1 more source

Implantable drug delivery system: Frontiers of medicine‐engineering interdisciplinary

Interdisciplinary Medicine, EarlyView.
This review systematically summarizes the driving mechanisms of implantable on‐demand drug delivery systems (IDDS), including endogenous, exogenous, and closed‐loop strategies. It highlights the pivotal roles of flexible electronics and miniaturization in enhancing the tissue conformity and spatial adaptability.
Yu Zeng, Rongtai Su, Manyu Zhao, Xin Song, Ran Liu, Yuhao Zhou, Chaojuan Yang, Yanli Jiao, Xiao‐Wei Xiang, Lingqian Chang   +9 more
wiley   +1 more source