نتایج جستجو برای: serum leptin

تعداد نتایج: 319768  

Journal: :Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association 2003
Abderrahmane Ghazali Franck Grados Roxana Oprisiu Delia Bunea Philippe Morinière Najeh El Esper Isabelle El Esper Michel Brazier Jean Claude Souberbielle Albert Fournier Thierry Thomas

BACKGROUND Experimentally, leptin has a positive effect on bone mass when infused intravenously, but a negative one after intracerebroventricular administration. Renal failure increases its serum level above the concentration beyond which its transport to the brain may be saturated. Thus, we tested, in a chronic haemodialysis population, the hypothesis of a positive relationship between serum l...

Journal: :Regulatory peptides 2005
Andreas Lindqvist Charlotta Dornonville de la Cour Anna Stegmark Rolf Håkanson Charlotte Erlanson-Albertsson

Palatable food is rich in fat and/or sucrose. In this study we examined the long-term effects of such diets on food intake, body weight, adiposity and circulating levels of the satiety peptide leptin and the hunger peptide ghrelin. The experiments involved rats and mice and lasted 5 weeks. In rats, we examined the effect of diets rich in fat and/or sucrose and in mice the effect of a high fat d...

2014
Saliha Ozsoy Aslı Besirli Ummuhan Abdulrezzak Mustafa Basturk

OBJECTIVE Ghrelin and leptin, appetite-regulating hormones, play a role in mood regulation. Current data about the relation between leptin/ghrelin and depression are still controversial. This study aimed to investigate serum leptin and ghrelin levels in patients with depression and the effects of treatment on these levels. METHODS Serum ghrelin and leptin levels were measured before and after...

Journal: :Reproduction 2005
Georgios Anifandis Eleni Koutselini Ioannis Stefanidis Vassijlios Liakopoulos Constantinos Leivaditis Themis Mantzavinos Nikolaos Vamvakopoulos

This prospective study was undertaken to reassess the prognostic value of leptin during critical stages of in vitro fertilization-embryo transfer (IVF-ET) and address its role in the functional staging of assisted reproductive technologies at the level of embryo quality. Serum and follicular fluid samples of 100 selected women undergoing the long IVF-ET protocol were collected for leptin and em...

2017
Gurkan Bozan Nesrin Dogruel

Aim: Complex correlations exist between leptin, obesity and bone formation. Leptin is thought to affect growth and bone formation as well as osteoblastic and osteoclastic activities. Additionally, leptin increases bone mineral content. The aim of this study was to evaluate the correlation between serum leptin levels and osteoblastic and osteoclastic parameters and Bone Mineral Density (BMD) in ...

2014
Marcelino Rodríguez Buenaventura Brito Díaz Itahisa Marcelino Rodríguez Delia Almeida González María del Cristo Rodríguez Pérez Antonio Cabrera de León

Adipocytes produce hormones and adipokines, among others leptin, with metabolic and inflammatory responses. The role of leptin involves different subsets of the immune system. Low levels of serum leptin concentrations are associated with bacterial infections and produce susceptibility to allergic diseases and type Th2 autoimmune diseases. High levels of leptin are associated with Th1 autoimmune...

Journal: :Psychoneuroendocrinology 2014
Milawaty Nurjono Sasi Neelamekam Jimmy Lee

Leptin plays an important role in the modulation of the dopaminergic system and has recently been implicated in schizophrenia. There have been conflicting reports on leptin levels in schizophrenia; as well as on the association between leptin levels and clinical symptoms. Therefore, this study aims to examine (i) leptin levels in schizophrenia relative to control, and (ii) the relationship betw...

Journal: :The Journal of clinical endocrinology and metabolism 1997
A Harigaya K Nagashima Y Nako A Morikawa

The serum leptin concentration reflects the amount of adipose tissue in the body. Although fat deposition in the fetus in the third trimester markedly increases, the role of leptin during pregnancy has not been clarified. In the present study, whether or not the serum leptin concentration correlates with growth in utero was investigated, in addition to how leptin levels change in the first few ...

Journal: :International journal of clinical and experimental medicine 2014
Craig Niederberger

BACKGROUND Asthenozoospermia is one kind cause of male infertility. Nevertheless, no specific etiology can be identified by routine tests in some cases. Recently, it has been shown that leptin plays a critical role in male fertility. However, the link between leptin and sperm motility is yet to be determined. The aim of this study was to explore association between seminal and serum leptin leve...

Journal: :European journal of endocrinology 2000
V Luukkaa J Rouru O Ahokoski H Scheinin K Irjala R Huupponen

OBJECTIVE Leptin plays an important role in the regulation of reproduction. To explore the contribution of oestradiol to serum leptin levels in men, we measured the concentrations of serum leptin and insulin after inhibition of oestrogen biosynthesis by selective blockade of the aromatase enzyme. DESIGN The study had a double-blind parallel group design. METHODS The aromatase inhibitor, MPV...

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