Journal of Clinical Endocrinology and Metabolism
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Link Between Increased Satiety Gut Hormones and Reduced Food Reward After Gastric Bypass Surgery for Obesity
Journal of Clinical Endocrinology and Metabolism - Tập 101 Số 2 - Trang 599-609 - 2016
Weight Regain after a Diet-Induced Loss Is Predicted by Higher Baseline Leptin and Lower Ghrelin Plasma Levels Context: Appetite-related hormones may play an important role in weight regain after obesity therapy. Objective: Our objective was to investigate the potential involvement of ghrelin, leptin, and insulin plasma levels in weight regain after a therapeutic hypocaloric diet. Design: A group of obese/overweight volunteers (49 women and 55 men; 35 ± 7 yr; 30.7 ± 2.4 kg/m2) followed an 8-wk hypocaloric diet (−30% energy expenditure) and were evaluated again 32 wk after treatment. Body weight as well as plasma fasting ghrelin, leptin, and insulin concentrations were measured at three points (wk 0, 8, and 32). Results: After the 8-wk hypocaloric diet, the average weight loss was −5.0 ± 2.2% (P < 0.001). Plasma leptin and insulin concentrations decreased significantly, whereas ghrelin levels did not markedly change. In the group regaining more than 10% of the weight loss, leptin levels were higher (P < 0.01), whereas ghrelin levels were lower (P < 0.05). No differences were observed in insulin levels. Weight regain at wk 32 was negatively correlated with ghrelin and positively associated with leptin levels at baseline (wk 0) and endpoint (wk 8). These outcomes showed a gender-specific influence, being statistically significant among men for ghrelin and between women for leptin. Moreover, a decrease in ghrelin after an 8-wk hypocaloric diet was related to an increased risk for weight regain (odds ratio = 3.109; P = 0.008) whereas a greater reduction in leptin (odds ratio = 0.141; P = 0.001) was related to weight-loss maintenance. Conclusions: Subjects with higher plasma leptin and lower ghrelin levels at baseline could be more prone to regain lost weight, and hormones levels could be proposed as biomarkers for predicting obesity-treatment outcomes.
Journal of Clinical Endocrinology and Metabolism - Tập 95 Số 11 - Trang 5037-5044 - 2010
Differential Acylated Ghrelin, Peptide YY3–36, Appetite, and Food Intake Responses to Equivalent Energy Deficits Created by Exercise and Food Restriction
Journal of Clinical Endocrinology and Metabolism - Tập 96 Số 4 - Trang 1114-1121 - 2011
The Water Permeability Channels Aquaporins 1–4 Are Differentially Expressed in Granulosa and Theca Cells of the Preovulatory Follicle during Precise Stages of Human Ovulation Abstract Context: Changes in vascular permeability and expansion of the fluid-filled antrum are major events in the LH-induced ovulatory process. Objectives: Our objective was to investigate the presence and expression levels of aquaporins (AQPs) in the granulosa and theca cell compartments of the follicle during defined phases of human ovulation. Design and Setting: We conducted a prospective experimental study at the Department of Obstetrics and Gynaecology at a university hospital. Participants: Twenty-eight women underwent laparoscopic sterilization and at the same time follicle retrieval at four periovulatory phases. Main Outcome Measures: mRNA levels of AQP1-4 were measured in separated granulosa and theca cells from preovulatory phase, early ovulatory (EO) phase, late ovulatory phase, and postovulatory phase. Immunohistochemistry was done for AQP1-4 in intact human follicles. Results: All four AQPs were expressed in both the theca and granulosa cells during ovulation. In granulosa cells, AQP1 levels increased in the late ovulatory and postovulatory phases. Expression of AQP2-3 followed a similar pattern with a marked increase in the EO phase, whereas AQP4 levels decreased from preovulatory to the EO phase. The presence of AQP1-4 in the human follicle was verified by immunohistochemistry. Conclusions: The results show for the first time the presence of AQP1-4 in human follicles during ovulation. The marked early rise in expression of AQP2 and AQP3 suggests a role during the process leading to follicular rupture, and the late rise of AQP1 suggests a role in corpus luteum formation.
Journal of Clinical Endocrinology and Metabolism - Tập 96 Số 4 - Trang 1021-1028 - 2011
Molecular Biomarkers for Weight Control in Obese Individuals Subjected to a Multiphase Dietary Intervention Abstract Context Although calorie restriction has proven beneficial for weight loss, long-term weight control is variable between individuals. Objective To identify biomarkers of successful weight control during a dietary intervention (DI). Design, Setting, and Participants Adipose tissue (AT) transcriptomes were compared between 21 obese individuals who either maintained weight loss or regained weight during the DI. Results were validated on 310 individuals from the same study using quantitative reverse transcription polymerase chain reaction and protein levels of potential circulating biomarkers measured by enzyme-linked immunosorbent assay. Intervention Individuals underwent 8 weeks of low-calorie diet, then 6 months of ad libitum diet. Outcome Measure Weight changes at the end of the DI. Results We evaluated six genes that had altered expression during DI, encode secreted proteins, and have not previously been implicated in weight control (EGFL6, FSTL3, CRYAB, TNMD, SPARC, IGFBP3), as well as genes for which baseline expression differed between those with good and poor weight control (ASPN, USP53). Changes in plasma concentrations of EGFL6, FSTL3, and CRYAB mirrored AT messenger RNA expression; all decreased during DI in individuals with good weight control. ASPN and USP53 had higher baseline expression in individuals who went on to have good weight control. Expression quantitative trait loci analysis found polymorphisms associated with expression levels of USP53 in AT. A regulatory network was identified in which transforming growth factor β1 (TGF-β1) was responsible for downregulation of certain genes during DI in good controllers. Interestingly, ASPN is a TGF-β1 inhibitor. Conclusions We found circulating biomarkers associated with weight control that could influence weight management strategies and genes that may be prognostic for successful weight control.
Journal of Clinical Endocrinology and Metabolism - Tập 102 Số 8 - Trang 2751-2761 - 2017
Increased Basement Membrane Components in Adipose Tissue During Obesity: Links With TGFβ and Metabolic Phenotypes
Journal of Clinical Endocrinology and Metabolism - Tập 101 Số 6 - Trang 2578-2587 - 2016
25-Hydroxyvitamin D Response to Graded Vitamin D<sub>3</sub>Supplementation Among Obese Adults
Journal of Clinical Endocrinology and Metabolism - Tập 98 Số 12 - Trang 4845-4851 - 2013
<i>N</i>-Acetyl-Cysteine Inhibits Phospholipid Metabolism, Proinflammatory Cytokine Release, Protease Activity, and Nuclear Factor-κB Deoxyribonucleic Acid-Binding Activity in Human Fetal Membranes<i>in Vitro</i>
Journal of Clinical Endocrinology and Metabolism - Tập 88 Số 4 - Trang 1723-1729 - 2003
Loss of Expression of the Ubiquitous Transcription Factor cAMP Response Element-Binding Protein (CREB) and Compensatory Overexpression of the Activator CREM in the Human Adrenocortical Cancer Cell Line H295R
Journal of Clinical Endocrinology and Metabolism - Tập 85 Số 1 - Trang 345-354 - 2000
Progestins in Hormone Replacement Therapies Reactivate Cancer Stem Cells in Women with Preexisting Breast Cancers: A Hypothesis
Journal of Clinical Endocrinology and Metabolism - Tập 93 Số 9 - Trang 3295-3298 - 2008
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