Results 81 to 90 of about 273,643 (354)

Leptin Suppresses Glutamate-Induced Apoptosis Through Regulation of ERK1/2 Signaling Pathways in Rat Primary Astrocytes

open access: yesCellular Physiology and Biochemistry, 2017
Background/Aims: Leptin is a hormone expressed by adipose tissue that regulates body energy homeostasis and weight loss by activating leptin receptors in the hypothalamus. Leptin receptors are also expressed in astrocytes.
Hyunju Park   +4 more
doaj   +1 more source

Mouse circadian plasma leptin and active ghrelin rhythms under ad libitum and scheduled feeding [PDF]

open access: yes, 2007
Thesis (M.S.) University of Alaska Fairbanks, 2007Light is the strongest timing cue for the circadian system, but non-photic cues can also entrain the master circadian clock, i.e., suprachiasmatic nuclei (SCN).
Wan, Haiting
core  

Acute leptin deficiency, leptin resistance, and the physiologic response to leptin withdrawal [PDF]

open access: yesProceedings of the National Academy of Sciences, 2005
Food restriction and weight loss result in reduced plasma leptin, which is associated with a pleiotropic biologic response. However, because weight loss itself is also associated with changes in numerous other humoral and metabolic signals, it can be difficult to determine the precise features of the biologic response to acute leptin deficiency.
Jason M, Montez   +5 more
openaire   +2 more sources

Parabiosis, Assembloids, Organoids (PAO)

open access: yesAdvanced Science, EarlyView.
This review evaluates parabiosis, organoids, and assembloids as complementary disease models spanning systemic, organ, and multi‐organ levels. It highlights their construction strategies, applications, and current limitations, while emphasizing their integration with frontier technologies such as artificial intelligence, organ‐on‐a‐chip, CRISPR, and ...
Yang Hong   +5 more
wiley   +1 more source

PTG‐Dependent Glycogen Metabolic Dysfunction Drives Impaired Adipose Browning: A Novel Mechanism Linking PM2.5 to Metabolic Disorders

open access: yesAdvanced Science, EarlyView.
This study provides the first evidence that PM2.5 impairs iWAT browning via PTG‐mediated glycogen metabolism disruption, which is initiated by ADRB3 inhibition and subsequently triggers VEGFB upregulation. It thereby delineates the ADRB3‐PTG‐VEGFB axis as central to PM2.5‐induced metabolic dysfunction and identifies adipose glycogen metabolism as a ...
Limin Wang   +12 more
wiley   +1 more source

Early postnatal caloric restriction protects adult male intrauterine growth-restricted offspring from obesity. [PDF]

open access: yes, 2012
Postnatal ad libitum caloric intake superimposed on intrauterine growth restriction (IUGR) is associated with adult-onset obesity, insulin resistance, and type 2 diabetes mellitus (T2DM).
Dai, Yun   +6 more
core   +1 more source

Leptin receptor signaling: pathways to leptin resistance

open access: yesFrontiers in Bioscience, 2011
The identification of spontaneous mutations in the leptin- and leptin receptor (ObR)-encoding ob and db gene, respectively, opened up a new field in obesity research. Leptin, an adipocyte-derived hormone, mirrors the body's fat stores and thereby informs the brain about the body's energy status.
Joris, Wauman, Jan, Tavernier
openaire   +2 more sources

Label‐Free Leukocyte Biophysical Profiling Using Impedance‐Deformability Cytometry for Rapid Cardiovascular Risk Stratification

open access: yesAdvanced Science, EarlyView.
This study presents an impedance‐based single‐cell profiling platform that quantifies the electrical and mechanical properties of neutrophils across in vitro, in vivo, and clinical samples. The approach reveals distinct biophysical alterations associated with type 2 diabetes (T2DM) and cardiovascular complications, suggesting its potential utility for ...
Linwei He   +13 more
wiley   +1 more source

The leptin system and its expression at different nutritional and pregnant stages in lined seahorse (Hippocampus erectus)

open access: yesBiology Open, 2016
Leptin is an essential hormone for the regulation of energy metabolism and food intake in vertebrate animals. To better understand the physiological roles of leptin in nutrient regulation in paternal ovoviviparous fish (family Syngnathidae), the present ...
Huixian Zhang   +4 more
doaj   +1 more source

Discovery of the elusive leptin in birds: identification of several 'missing links' in the evolution of leptin and its receptor. [PDF]

open access: yesPLoS ONE, 2014
Leptin is a pleiotropic protein best known for regulation of appetite and fat storage in mammals. While many leptin orthologs have been identified among vertebrates, an authentic leptin in birds has remained elusive and controversial.
Jeremy W Prokop   +10 more
doaj   +1 more source

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