Results 181 to 190 of about 99,069 (259)

The Pathology and Blood Biochemistry of Juvenile Lates calcarifer on Diets Contaminated With Mycotoxins, Histamines and Rancid Fats—A Case Study

Journal of Fish Diseases, EarlyView.
ABSTRACT Mycotoxins, originating from contaminated raw materials or suboptimal feed storage, are a growing concern in tropical aquaculture. Common fungi such as Aspergillus spp. and Fusarium spp. produce mycotoxins including aflatoxin, fumonisin, deoxynivalenol and zearalenone. High doses or prolonged exposure (weeks) to low doses of these mycotoxins (<
Aidan Kwok, Jose A. Domingos, Joseph Oh, Piero Chan, Joyce J. L. Ong, Leo Nankervis, Jeffrey Ling, Robert Nichol, Susan Gibson‐Kueh   +8 more
wiley   +1 more source

Sex differences in intestinal morphology and increase in diencephalic neuropeptide Y gene expression in female but not male Pekin ducks exposed to chronic heat stress

Journal of Neuroendocrinology, EarlyView.
Abstract The impact of heat stress (HS) on production is intricately linked with feed intake. We investigated the effects of HS on intestines and diencephalic genes in Pekin ducks. One hundred and sixty adult ducks were allocated to two treatment rooms.
E. M. Oluwagbenga, M. Bergman, K. M. Ajuwon, G. S. Fraley   +3 more
wiley   +1 more source

Hypotheses in light detection by vertebrate ancient opsin in the bird brain

Journal of Neuroendocrinology, EarlyView.
Abstract Extra‐retinal photoreception is common across fish and avian species. In birds, the hypothalamus contains non‐visual photoreceptors that detect light and regulate multiple endocrine systems. To date, light‐dependent control of seasonal reproduction is one of the most well‐studied systems that require deep brain photoreception.
Tyler J. Stevenson, Timothy A. Liddle, Simone L. Meddle, Jonathan H. Pérez, Stuart N. Peirson, Russell G. Foster, Gaurav Majumdar   +6 more
wiley   +1 more source

Effects of wintering under methylmercury exposure on spring reproductive onset in song sparrows (Melospiza melodia)

Journal of Neuroendocrinology, EarlyView.
Abstract Exposure to methylmercury (MeHg) on breeding grounds may have numerous deleterious effects on birds, including neurotoxicity, disruption of hormones, and impaired reproduction. But it is unknown if MeHg exposure on wintering grounds can carry over and produce negative effects on the following spring breeding seasonal transition.
Claire L. J. Bottini, Calista J. Henry, Scott A. MacDougall‐Shackleton   +2 more
wiley   +1 more source

Neuroendocrine mechanisms responsible for elevated gonadotrophin‐releasing hormone and luteinising hormone pulses in polycystic ovary syndrome

Journal of Neuroendocrinology, EarlyView.
Abstract Polycystic ovary syndrome (PCOS) is the leading cause of anovulatory infertility in premenopausal individuals with ovaries worldwide. Despite the diagnostic features of anovulation, ovarian cysts, and hyperandrogenemia, which indicate that ovary dysfunction is the cause of the syndrome, changes in central neuroendocrine circuits are a ...
Aleisha M. Moore
wiley   +1 more source

Timing mismatches, carryover effects, and the role of neuroendocrine mechanisms in determining birds' responses to environmental change

Journal of Neuroendocrinology, EarlyView.
Neuroendocrine mechanisms that synchronize annual cycle stages influence the likelihood of (1) timing mismatches between stages and environmental conditions, and (2) carryover effects among stages. We suggest that there is a trade‐off such that neuroendocrine mechanisms that reduce timing mismatches may inherently increase the likelihood of carryover ...
Thomas P. Hahn, Jamie M. Cornelius, Heather E. Watts   +2 more
wiley   +1 more source

Photostimulation increases food intake, agouti‐related protein (AGRP) and type II iodothyronine deiodinase (DIO2) gene expression in the medio‐basal hypothalamus of Gambel's White‐crowned Sparrow

Journal of Neuroendocrinology, EarlyView.
Abstract Before migration, birds express hyperphagia leading to deposition of fuel in support of long‐distance flight. Long days in spring stimulate a photoperiodic neuroendocrine cascade leading to heightened food intake. A major component of the response of the reproductive system to increased daylength in birds is the local conversion of thyroxine ...
Timothy Boswell, Sarena K. Olson, George E. Bentley, Nicole Perfito, Marilyn Ramenofsky   +4 more
wiley   +1 more source

Overexpression of the short isoform of the dopamine D2 receptor causes diet‐induced obesity and hyperglycemia in mice

Journal of Neuroendocrinology, EarlyView.
Alterations in the expression levels of D2S and D2L resulted in obesity and metabolic syndrome such as abdominal fat accumulation and hyperglycemia in D2L KO mice fed with a high‐fat diet, compared to WT mice. This may be partly due to increased food intake.
Hanna Gonzalez, Lei Cheng, Qing Chang, Paul E. Gold, Diego Perez‐Tilve, YanYan Wang   +5 more
wiley   +1 more source

Evaluation of the endocranial anatomy of the early Paleogene north African gavialoid crocodylian Argochampsa krebsi and evolutionary implications for adaptation to salinity tolerance in marine crocodyliforms

Journal of Anatomy, EarlyView.
Abstract Argochampsa krebsi is a gavialoid crocodylian from the early Paleogene of North Africa. Based on its recovered phylogenetic relationship with South American species, it has been inferred to have been capable of transoceanic dispersal, but potential anatomical correlates for a marine lifestyle have yet to be identified.
Carly C. Pligersdorffer, Paul M. J. Burke, Philip D. Mannion   +2 more
wiley   +1 more source

Should positive airway pressure be continued uninterrupted after endoscopic skull base surgery? A review of current literature

Journal of Sleep Research, EarlyView.
Summary Obstructive sleep apnea (OSA) poses unique challenges to the perioperative management of endoscopic skull base surgery (ESBS). Currently, no consensus or guidelines exist on the reintroduction of positive airway pressure (PAP) in these patients.
Ross Rosen, Jayanth Rajan, John Richter Jr., Daniel Karasik, Claudia I. Cabrera, John Gerka Stuyt, Kenneth Rodriguez, Brian D'Anza, Thomaz Fleury Curado, Sanjeet V. Rangarajan   +9 more
wiley   +1 more source