Rationale: The antipsychotic drug, olanzapine, often induces weight gain and glucose metabolism disturbances, which may result from feeding pattern abnormalities.
Objectives: The objectives of the study were to examine the effects of a chronic olanzapine treatment on feeding patterns in the rat and to investigate a potential time-related association between feeding patterns and the appearance of glucose metabolism abnormalities and adiposity.
Methods: Male rats were treated with olanzapine (2 mg/kg/day), haloperidol (1 mg/kg/day) or a control solution (drugs mixed with the food). In experiment 1, treatments lasted 26 days and feeding patterns were measured on day 21. In experiment 2, treatments lasted for 46 days, and an oral glucose tolerance test (OGTT) was realised on day 31. At the end of both experiments, plasma parameters and body composition were analysed.
Results: In experiment 1, olanzapine-treated animals showed increased meal number, decreased ingestion rate, meal size and inter-meal interval, and no change in total food intake. Plasma glucose, OGTT and body composition were not altered. In experiment 2, after 31 days of treatment, fasting blood glucose was increased and OGTT indicated an insulin resistance. After 46 days of treatment, hyperglycaemia was aggravated (compared to 31 days), and adiposity was increased in olanzapine-treated animals. In both experiments, the haloperidol-treated rats did not differ from the control ones.
Conclusion: Chronic olanzapine treatment produces changes in feeding patterns, in a way consistent with an increased incentive drive to eat. As a whole, the results raise the hypothesis that long-term alteration of feeding pattern by olanzapine may predispose to disturbances in the regulation of energy metabolism.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1007/s00213-009-1593-5 | DOI Listing |
mSystems
January 2025
Key Laboratory of Pig Genetic Resources Evaluation and Utilization (Nanjing), Ministry of Agriculture and Rural Affairs, Institute of Swine Science, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China.
Unlabelled: Although metagenomic investigations into microbial fiber-degrading capabilities are currently prevalent, there is a notable gap in research concerning the regulatory mechanisms underpinning host-microbiota interactions that confer tolerance to high-fiber diets in pigs. In this study, 28 Meishan (MS) and 28 Large White (LW) pigs were subjected to feeding experiments involving various fiber levels. Subsequently, multi-omics was employed to investigate the influence of host-microbiota interactions on the fiber degradation of pigs.
View Article and Find Full Text PDFJ Res Adolesc
March 2025
Behavioural Science Institute, Radboud University, Nijmegen, The Netherlands.
Friends' influence may importantly contribute to the development of adolescent disordered eating behaviors. However, little is known about the influence of friends on loss of control eating. This study investigated whether friend-reported loss of control eating was associated with changes in adolescents' own loss of control eating 1 year later and tested whether adolescents with lower self-esteem, higher fear of negative evaluation, and higher body dissatisfaction were more susceptible to friends' influence.
View Article and Find Full Text PDFMed Vet Entomol
January 2025
Entomology Research Unit, Department of Zoology, The University of Burdwan, Burdwan, India.
Culicoides oxystoma Kieffer (Diptera: Ceratopogonidae) transmits many pathogens, including seven viruses, four protozoa and one nematode. This species has a wide distribution range across northern Afro-tropical, Palearctic, Australian, Indo-Malayan realms with a broad host spectrum, including cattle, buffaloes, sheep, pigs, dogs, horses and even humans. The heterogeneous nature of Culicoides' blood-feeding patterns is well documented, but the influence of various host blood meal sources on gut bacterial composition remains scant.
View Article and Find Full Text PDFJ Dent Sci
January 2025
Department of Oral Care for Systemic Health Support, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.
Background/purpose: Health literacy is thought to play a major role in implementing health behaviors, such as preventing coronavirus disease 2019 (COVID-19). In this study, we aimed to examine the relationship between oral health literacy (OHL), dietary literacy (DL), and changes in oral health and eating habits during the COVID-19 pandemic.
Materials And Methods: The self-assessment questionnaire, including questions on oral and dietary conditions for each period of the COVID-19 pandemic, sources of information, OHL, DL, and frequency of COVID-19 prevention measures, was administered using a web research company.
Int Breastfeed J
January 2025
University College Dublin, Dublin, Ireland.
Background: Most women can produce enough milk to exclusively breastfeed. However, a small cohort are prevented from doing so due to a condition known as primary low milk supply. The aim of the study was to provide new insights into how mothers with this condition experience help and support from professionals, volunteer support groups, and partners.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!