Melpomeni Peppa

Prof. Dr. Melpomeni Peppa

Endocrine Unit, 2nd Department of Internal Medicine-Propaedeutic, Attikon University Hospital, National and Kapodistrian Athens University Medical School, 12462 Athens, Greece
orcid

Research Focus & Metrics

Academic Career Length

19Years (2008-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

View All Publications
1 May 2008 in Current Diabetes Reviews
Verified
Journal Article
Closed access
PDF file
Melpomeni PeppaMelpomeni Peppa
Melpomeni Peppa
SRSotirios A. Raptis
Sotirios A. Raptis
Cardiovascular disease (CVD) is the leading cause of mortality worldwide. Advanced glycation end products [AGEs] seem to play an important role for the development and/or progression of CVD mainly through induction of oxidative stress and inflammation. AGEs are a heterogenous group of molecules formed by the nonenzymatic reaction of reducing sugars with amino acids of proteins, lipids and nucleic acids. Recent studies suggest that in addition to those endogenously formed, diet constitutes an important exogenous source of AGEs. Diet-derived AGEs contribute to the whole body AGE pool and the AGE-related pathology. Recent in vitro and in vivo studies revealed significant correlations between diet-derived AGEs and several risk factors and/or markers of CVD, suggesting the dietary AGEs restriction as a promising therapeutic intervention.

12 December 2012 in Obesity
Verified
Journal Article
Open access
PDF file
Melpomeni PeppaMelpomeni Peppa
Melpomeni Peppa
CKChrysi Koliaki
Chrysi Koliaki
APAthanasios Papaefstathiou
Athanasios Papaefstathiou
EGEfstathios Garoflos
Efstathios Garoflos
NKNicholas Katsilambros
Nicholas Katsilambros
GDGeorge D. Dimitriadis
George D. Dimitriadis
Objective: Although obesity is typically associated with increased cardiovascular risk, a subset of obese individuals display a normal metabolic profile (“metabolically healthy obese,” MHO) and conversely, a subset of nonobese subjects present with obesity‐associated cardiometabolic abnormalities (“metabolically obese nonobese,” MONO). The aim of this cross‐sectional study was to identify the most important body composition determinants of metabolic phenotypes of obesity in nonobese and obese healthy postmenopausal women.Design and Methods: We studied a total of 150 postmenopausal women (age 54 ± 7 years, mean ± 1 SD). Based on a cardiometabolic risk score, nonobese (body mass index [BMI] ≤ 27) and obese women (BMI > 27) were classified into “metabolically healthy” and “unhealthy” phenotypes. Total and regional body composition was assessed with dual‐energy X‐ray absorptiometry (DXA).Results: In both obese and nonobese groups, the “unhealthy” phenotypes were characterized by frequent bodyweight fluctuations, higher biochemical markers of insulin resistance, hepatic steatosis and inflammation, and higher anthropometric and DXA‐derived indices of central adiposity, compared with “healthy” phenotypes. Indices of total adiposity, peripheral fat distribution and lean body mass were not significantly different between “healthy” and “unhealthy” phenotypes. Despite having increased fat mass, MHO women exhibited comparable cardiometabolic parameters with healthy nonobese, and better glucose and lipid levels than MONO. Two DXA‐derived indices, trunk‐to‐legs and abdominal‐to‐gluteofemoral fat ratio were the major independent determinants of the “unhealthy” phenotypes in our cohort.Conclusions: The “metabolically obese phenotype” is associated with bodyweight variability, multiple cardiometabolic abnormalities and an excess of central relative to peripheral fat in postmenopausal women. DXA‐derived centrality ratios can discriminate effectively between metabolic subtypes of obesity in menopause.

10 October 2024 in Medicina
Verified
Journal Article
Open access
PDF file
SPSOTIRIOS PILILIS
SOTIRIOS PILILIS
Stamatios LampsasStamatios Lampsas
Stamatios Lampsas
AKAIKATERINI KOUNTOURI
AIKATERINI KOUNTOURI
LPLoukia Pliouta
Loukia Pliouta
EMMANOUIL KORAKASEMMANOUIL KORAKAS
EMMANOUIL KORAKAS
VLVaia Lambadiari
Vaia Lambadiari
Polycystic Ovarian Syndrome (PCOS) is a prevalent endocrine disorder affecting women of reproductive age, with significant variations in presentation characterized by hyperandrogenism, ovulatory dysfunction, and polycystic ovarian morphology. Beyond reproductive health, it may also pose crucial long-term cardiometabolic risks, especially for women with specific types of PCOS, contributing to early subclinical cardiovascular atherosclerotic alterations such as endothelial dysfunction, increased arterial stiffness, and coronary artery calcium levels, respectively. Moreover, the precise relationship between clinical cardiovascular disease (CVD) and PCOS remains debated, with studies demonstrating an elevated risk while others report no significant association. This review investigates the pathophysiology of PCOS, focusing on insulin resistance and its link to subclinical and clinical cardiovascular disease. Diagnostic challenges and novel management strategies, including lifestyle interventions, medications like metformin and glucagon-like peptide-1 receptor agonists (GLP-1RAs), hormonal contraceptives, and bariatric surgery, are further discussed. Recognizing the cardiometabolic risks associated with PCOS, a comprehensive approach and early intervention should address both the reproductive and cardiometabolic dimensions of the syndrome.

26 February 2025 in Molecular Medicine Reports
Verified
Journal Article
Open access
PDF file
AMAspasia Manta
Aspasia Manta
AGAnastasia Georganta
Anastasia Georganta
ARAfroditi Roumpou
Afroditi Roumpou
VZVassilis Zoumpourlis
Vassilis Zoumpourlis
DSDemetrios A. Spandidos
Demetrios A. Spandidos
Melpomeni PeppaMelpomeni Peppa
Melpomeni Peppa
Schizophrenia (SCZ) represents a considerable health concern, not only due to its impact on cognitive and psychiatric domains, but also because of its association with metabolic abnormalities. Individuals with SCZ face an increased risk of developing metabolic syndrome (MS), which contributes to the increased cardiovascular burden and reduced life expectancy observed in this population. Metabolic alterations are associated with both the SCZ condition itself and extrinsic factors, particularly the use of antipsychotic medications. Additionally, the link between SCZ and MS seems to be guided by distinct genetic parameters. The present narrative review summarizes the relationship between SCZ and MS and emphasizes the various therapeutic approaches for managing its components in patients with these conditions. Recommended therapeutic approaches include lifestyle modifications as the primary strategy, with a focus on behavioral lifestyle programs, addressing dietary patterns and physical activity. Pharmacological interventions include administering common antidiabetic medications and the selection of less metabolically harmful antipsychotics. Alternative interventions with limited clinical application are also discussed. Ultimately, a personalized therapeutic approach encompassing both the psychological and metabolic aspects is essential for the effective management of MS in patients with SCZ.

7 August 2023 in Nutrients
Verified
Journal Article
Open access
PDF file
AMAspasia Manta
Aspasia Manta
SPStavroula A. Paschou
Stavroula A. Paschou
GIGEORGIA ISARI
GEORGIA ISARI
IMIoanna Mavroeidi
Ioanna Mavroeidi
KSKalantaridou N Sophia
Kalantaridou N Sophia
Melpomeni PeppaMelpomeni Peppa
Melpomeni Peppa
Polycystic ovary syndrome is a common endocrine disorder characterized by hormonal imbalances and various metabolic abnormalities linked to insulin resistance via a vicious cycle. Genetic and environmental factors underlie its pathogenesis and evolution. Nutrition, in terms of nutrient composition, dietary patterns, endocrine-disrupting chemicals, and food processing and preparation, has gained significant attention in the pathogenesis and the therapeutic approach of polycystic ovary syndrome. Carbohydrate intake seems to be a critical point in the diet assignment. Glycemic index and glycemic load constitute indexes of the impacts of dietary carbohydrates on postprandial glucose levels. Numerous studies have indicated that a high glycemic index and glycemic load diet may exacerbate insulin resistance, a key feature of the syndrome, and offer a risk for its development and its complications. Conversely, low-glycemic index and low-glycemic load diets seem to improve insulin sensitivity, regulate menstrual cycles, and mitigate the risk of comorbidities associated with polycystic ovary syndrome, such as obesity, alterations in body composition, type 2 diabetes, cardiovascular disease, and quality of life. This comprehensive review aims to explore the relevance of nutrition and more specifically, the association of glycemic index and glycemic load with the various aspects of polycystic ovary syndrome, as well as to assess the potential benefits of manipulating those indexes in the dietary approach for the syndrome.

29 September 2021 in Nutrients
Verified
Journal Article
Open access
PDF file
Melpomeni PeppaMelpomeni Peppa
Melpomeni Peppa
IMIoanna Mavroeidi
Ioanna Mavroeidi
The increased incidence of obesity, diabetes mellitus, aging, and associated comorbidities indicates the interplay between genetic and environmental influences. Several dietary components have been identified to play a role in the pathogenesis of the so-called “modern diseases”, and their complications including advanced glycation end products (AGEs), which are generated during the food preparation and processing. Diet-derived advanced glycation end products (dAGEs) can be absorbed in the gastrointestinal system and contribute to the total body AGEs’ homeostasis, partially excreted in the urine, while a significant amount accumulates to various tissues. Various in vitro, in vivo, and clinical studies support that dAGEs play an important role in health and disease, in a similar way to those endogenously formed. Animal studies using wild type, as well as experimental, animal models have shown that dAGEs contribute significantly to the pathogenesis of various diseases and their complications, and are involved in the changes related to the aging process. In addition, they support that dAGEs’ restriction reduces insulin resistance, oxidative stress, and inflammation; restores immune alterations; and prevents or delays the progression of aging, obesity, diabetes mellitus, and their complications. These data can be extrapolated in humans and strongly support that dAGEs’ restriction should be considered as an alternative therapeutic intervention.