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Housing Temperature Influences Metabolic Phenotype of Heart Failure with Preserved Ejection Fraction in J vs N Strain C57BL/6 Mice.

Mol Cell Endocrinol

January 2025

Division of Cardiology, Department of Internal Medicine, Frankel Cardiovascular Center, University of Michigan, Ann Arbor, MI 48105, USA; Ann Arbor VA Healthcare System, 2215 Fuller Rd, Ann Arbor, MI 48105, USA. Electronic address:

Preclinical heart failure studies rely heavily on mouse models despite their higher metabolic and heart rates compared to humans. This study examines how mouse strain (C57BL/6J vs. C57BL/6N) and housing temperature (23°C vs.

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Obstructive sleep apnea (OSA) is increasingly recognized for its link to idiopathic pulmonary fibrosis (IPF), though the underlying mechanisms remain poorly understood. Histone lysine demethylase 6B (KDM6B) may either prevent or promote organ fibrosis, but its specific role in IPF is yet to be clarified. This study aimed to investigate the function and mechanisms of KDM6B in IPF and the exacerbating effects of OSA.

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Heart failure with preserved ejection fraction (HFpEF) has recently emerged as an insidiously and increasingly prevalent heart failure phenotype. HFpEF often occurs in the context of hypertension and obesity and presents with diastolic dysfunction, ventricular hypertrophy, and myocardial fibrosis. Despite growing study of HFpEF, the causal links between early metabolic changes, bioenergetic perturbations, and cardiac structural remodeling remain unclear.

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A New Three-Hit Mouse Model of Neurodevelopmental Disorder with Cognitive Impairments and Persistent Sociability Deficits.

Brain Sci

December 2024

Department of Health, Normandie Université, UNICAEN (Université de Caen Normandie), INSERM (Institut National de la Santé et de la Recherche Médicale), UMR (Unité Mixte de Recherche) 1075 COMETE, Campus 5, CYCERON, FHU (Fédération Hospitalo-Universitaire) A2M2P, CHU (Centre Hospitalo-Universitaire) Caen, 14000 Caen, France.

Background/objectives: Cognitive deficits and negative symptoms associated with schizophrenia are poorly managed by current antipsychotics. In order to develop effective treatments, refining animal models of neurodevelopmental disorders is essential.

Methods: To address their multifactorial etiology, we developed a new three-hit mouse model based on the hypoglutamatergic hypothesis of the pathology combined with early stress, offering strong construct validity.

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Roles for Prlhr/GPR10 and Npffr2/GPR74 in Feeding Responses to PrRP.

Mol Metab

January 2025

Department of Internal Medicine, University of Michigan, Ann Arbor, MI USA; Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, MI, USA. Electronic address:

Several groups of neurons in the NTS suppress food intake, including Prlh-expressing neurons (NTS cells). Not only does the artificial activation of NTS cells decrease feeding, but also the expression of Prlh (which encodes the neuropeptide PrRP) and neurotransmission by NTS neurons contributes to the restraint of food intake and body weight, especially in animals fed a high fat diet (HFD). We used animals lacking PrRP receptors GPR10 and/or GRP74 (encoded by Prlhr and Npffr2, respectively) to determine roles for each in the restraint of food intake and body weight by the increased expression of Prlh in NTS neurons (NTS mice) and in response to the anorectic PrRP analog, p52.

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