Results 101 to 110 of about 40,879 (288)

Trade‐offs in avian parental care: a review of theory and meta‐analysis of brood size manipulations

Biological Reviews, EarlyView.
ABSTRACT The selective forces shaping parental care have been studied for over 50 years. While theoretical and experimental work has yielded qualitative progress, the large body of empirical work testing predictions about parental investment based on life‐history trade‐offs has yet to be synthesized.
Rebekah A. McKinnon, Malgorzata Lagisz, Sheeraja Sridharan, David F. Westneat, Kimberley J. Mathot   +4 more
wiley   +1 more source

Men with testosterone deficiency and a history of cardiovascular diseases benefit from long-term testosterone therapy: observational, real-life data from a registry study [PDF]

, 2016
Ahmad Haider,1 Aksam Yassin,2-4 Karim Sultan Haider,1 Gheorghe Doros,5 Farid Saad,4,6 Giuseppe MC Rosano7 1Private Urology Practice, Bremerhaven, 2Institute for Urology and Andrology, Segeberger Kliniken, Norderstedt, 3Department of Preventive Medicine ...
Haider KS, Saad F, Yassin A, Rosano GM, Haider A, Doros G   +5 more
core  

On the importance of including both sexes in animal studies – insights from home‐cage monitoring

Biological Reviews, EarlyView.
ABSTRACT A review of behavioural studies using home‐cage monitoring (HCM) systems revealed that over 61% of studies used only male subjects, with only 24% including both sexes, despite evidence of substantial behavioural differences between male and female animals. This bias could influence the outcomes of biomedical research.
Maša Čater, Adam Dušek, Aleksandra Bartelik, Silvia Mandillo, Elisabetta Golini, Mara Rigamonti, Rasneer Sonia Bains, Hamish Forrest, Marion Rivalan, Melissa Long, Anna Kiryk, Lars Lewejohann, Nuno Henrique Franco   +12 more
wiley   +1 more source

Deficient testosterone levels in men above 45 years with major depressive disorder - an age-matched case control study

South African Journal of Psychiatry, 2007
Background. Symptoms of partial androgen deficiency in ageing men (PADAM) overlap considerably with those of major depressive disorder. The relationship between these conditions is complicated by the usual age-related decline in serum testosterone ...
A M Dikobe, C W van Staden, S Reif, M Bornman   +3 more
doaj   +1 more source

Evidence for adaptive explanations of semelparity in animals

Biological Reviews, EarlyView.
ABSTRACT Semelparity, the reproductive strategy of reproducing once, is widespread but uncommon in animals. Classes of models to explain the evolution of semelparity are based either on age structure and mortality schedules – demographic models in which high post‐reproductive mortality risk favours high reproductive effort and semelparity results from ...
Diana O. Fisher, Roberto Salguero‐Gómez   +1 more
wiley   +1 more source

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

Testosterone deficiency and dietary therapeutic interventions in the rat model of diet-induced metabolic syndrome [PDF]

, 2014
Male Wistar rats fed with high carbohydrate (68%) and high fat (24%) diet (H) mimicking 'Western diets' showed enhanced visceral obesity and its associated risk factors of metabolic syndrome such as impaired glucose utilisation, insulin resistance ...
Kumar, Senthil Arun
core  

Reproducibility of Serum Androgen Concentrations by Liquid Chromatography Mass Spectrometry in Healthy Male and Female Athletes

Drug Testing and Analysis, EarlyView.
Box and whiskers plots show the distributions of serum testosterone (T), dihydrotestosterone (DHT), androstenedione (A4), and the ratios of T/FDHT and T/A4. ABSTRACT Detection of androgen doping relies on mass spectrometry‐based methods to detect natural endogenous and exogenous androgens in urine and serum. To distinguish exogenous administration from
D. J. Handelsman, S. Bermon
wiley   +1 more source

Status epilepticus: Updates on mechanisms and treatments

Epilepsia Open, EarlyView.
Abstract Status epilepticus (SE) consists of prolonged, self‐sustaining seizures and is a common neurological emergency that causes respiratory compromise and neuronal injury. Without prompt treatment, the seizures can become resistant to benzodiazepines, leading to the progressive evolution of established, refractory, and super‐refractory SE.
Suchitra Joshi, Jaideep Kapur
wiley   +1 more source

Prevalence of insulin dysregulation in a sport horse population as determined by traditional and stall‐side testing

Equine Veterinary Journal, EarlyView.
Abstract Background The prevalence of insulin dysregulation (ID) has not been investigated in sport horses. Stall‐side insulin assays offer convenience but need further validation. Objectives To determine the prevalence of and risk factors for ID in a sport horse population using an oral sugar test (OST) and assess agreement between stall‐side and ...
Kimberly L. Hallowell, Caitlyn R. Horne, Cary S. Miller, Sara R. Tufts, Katarzyna Dembek, Kim R. Love, Andrew W. van Eps, Lauren V. Schnabel   +7 more
wiley   +1 more source