24 results match your criteria: "Reproductive Health Research Institute[Affiliation]"

Introduction: Hormones produced by the hypothalamic-pituitary-adrenal-gonadal (HPAG) axis are crucial for modulating central nervous system (CNS) function and development throughout a person's life. Disruptions in HPAG function can impact psychological development, particularly during adolescence-a period marked by psychological growth and the maturation of the HPAG axis. An early indicator of HPAG alterations is ovulatory dysfunction (OD), a common condition among adolescents.

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Two adrenalectomies py -45erformed fourteen years apart notoriously alleviated insulin resistance in a female teenager with Congenital Generalized Lipoatrophy (CGL, 1988) and in a murine model of CGL (2002). Following a successful therapeutic trial with anti-glucocorticoids, we performed the first surgical procedure on an 18-year-old girl. Before surgery, the anti-glucocorticoid therapy produced a rapid and striking drop in fasting serum insulin levels (from over 400 to 7.

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Increased delivery and cytotoxicity of doxorubicin in HeLa cells using the synthetic cationic peptide pEM-2 functionalized liposomes.

Colloids Surf B Biointerfaces

August 2023

Escuela de Química y Farmacia, Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile. Electronic address:

Hypothesis: Due to the inability of nano-carriers to passively cross the cell membrane, cell penetration enhancers are used to accelerate cytoplasmic delivery of antineoplastic drugs. In this regard, snake venom phospholipase A2 peptides are known for their ability to destabilize natural and artificial membranes. In this context, functionalized liposomes with peptide pEM-2 should favor the incorporation of doxorubicin and increase its cytotoxicity in HeLa cells compared to free doxorubicin, and doxorubicin encapsulated in non-functionalized liposomes.

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The importance of estradiol for body weight regulation in women.

Front Endocrinol (Lausanne)

November 2022

Unidad de Psiquiatría Infantil y del Adolescente, Clínica Psiquiátrica Universitaria, Universidad de Chile, Santiago, Chile.

Obesity in women of reproductive age has a number of adverse metabolic effects, including Type II Diabetes (T2D), dyslipidemia, and cardiovascular disease. It is associated with increased menstrual irregularity, ovulatory dysfunction, development of insulin resistance and infertility. In women, estradiol is not only critical for reproductive function, but they also control food intake and energy expenditure.

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Background: Fertility awareness-based methods (FABMs) educate about reproductive health and enable tracking and interpretation of physical signs, such as cervical fluid secretions and basal body temperature, which reflect the hormonal changes women experience on a cyclical basis during the years of ovarian activity. Some methods measure relevant hormone levels directly. Most FABMs allow women to identify ovulation and track this "vital sign" of the menstrual or female reproductive cycle, through daily observations recorded on cycle charts (paper or electronic).

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Stress is known to be associated with adverse health outcomes. The COVID-19 pandemic and its associated lockdowns are examples of chronic stressors. Lockdown measures inadvertently caused significant psychological distress and became a powerful source of anxiety/stress, sleep disturbances, nutritional changes and weight gain.

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A growing body of evidence indicates that dietary polyphenols could be used as an early intervention to treat glucose-insulin (G-I) dysregulation. However, studies report heterogeneous information, and the targets of the intervention remain largely elusive. In this work, we provide a general methodology to quantify the effects of any given polyphenol-rich food or formulae over glycemic regulation in a patient-wise manner using an Oral Glucose Tolerance Test (OGTT).

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Tibolone as Hormonal Therapy and Neuroprotective Agent.

Trends Endocrinol Metab

October 2020

Department of Biological Sciences, School of Natural Sciences, University of Limerick, Limerick, Ireland; Health Research Institute, University of Limerick, Limerick, Ireland. Electronic address:

Tibolone (TIB), a selective tissue estrogenic activity regulator (STEAR) in clinical use by postmenopausal women, activates hormonal receptors in a tissue-specific manner. Estrogenic activity is present mostly in the brain, vagina, and bone, while the inactive forms predominate in the endometrium and breast. Conflicting literature on TIB's actions has been observed.

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To investigate the age-related nomograms and change trends of reproductive hormones, and prevalence of androgen deficiency (AD) in middle-aged and aging men from 2 studies.Two cross-sectional studies were conducted at 5-year intervals in Chinese community-dwelling men living in the same area. A total of 434 (Study 1, S1) and 944 (Study 2, S2) men aged 40 to 69 years were recruited as subjects and 59 (S1) and 98 (S2) men aged 20 to 39 years as controls to measure serum reproductive hormone levels.

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Objective: To evaluate the diagnostic performance of several biochemical predictors of insulin resistance (IR).

Design: A total of 90 nondiabetic subjects were tested with both the pancreatic suppression test (PST) and the oral glucose tolerance test (OGTT). Of them, 53 were non-insulin-resistant (NIR) subjects and the remaining 37 were insulin resistant subjects.

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Background: Sexual and physical abuse in childhood creates a great health burden including on mental and reproductive health. A possible link between child abuse and HIV infection has increasingly attracted attention. This paper investigated whether a history of child physical and sexual abuse is associated with HIV infection among adult women.

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A cohort of 141 males (18-80 yo, 42.9 ± 12.9) strongly suspected of being Insulin Resistant (IR) was prospectively studied by determining their insulin sensitivity (Pancreatic Suppression Test, PST) and testicular function (total testosterone and SHBG).

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Sex hormones significantly impact women's lives. Throughout the different stages of life, from menarche to menopause and all stages in between, women experience dramatic fluctuations in the levels of progesterone and estradiol, among other hormones. These fluctuations affect the body as a whole, including the central nervous system (CNS).

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Unlabelled: The concept of the ovarian continuum can be understood as a process that occurs during a woman's lifetime and begins during intrauterine life with fertilization. Women start their reproductive years with approximately five hundred thousand follicles containing oocytes, of which only around five hundred will be released during ovulation. Ovulation has been recognized as an event linked with reproduction; however, recent evidence supports the role of ovulation as a sign of health.

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Delphinidin anthocyanins have previously been associated with the inhibition of glucose absorption. Blood glucose lowering effects have been ascribed to maqui berry () extracts in humans after boiled rice consumption. In this study, we aimed to explore whether a standardized delphinidin-rich extract from maqui berry (Delphinol) affects glucose metabolism in prediabetic humans based on glycemia and insulinemia curves obtained from an oral glucose tolerance test (OGTT) after a challenge with pure glucose.

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Influence of sex steroid hormones on the adolescent brain and behavior: An update.

Linacre Q

August 2016

Biomedical Division, Reproductive Health Research Institute, Santiago, Chile; Universidad Bernardo O Higgins, Facultad de Salud, Departamento de Ciencias Químicas y Biológicas, Santiago, Chile.

This review explains the main effects exerted by sex steroids and other hormones on the adolescent brain. During the transition from puberty to adolescence, these hormones participate in the organizational phenomena that structurally shape some brain circuits. In adulthood, this will propitiate some specific behavior as responses to the hormones now activating those neural circuits.

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Background: Previous research has suggested that supplementation with delphinidin-rich maqui berry extract Delphinol® significantly alters postprandial carbohydrate metabolism and acutely lowers both insulin and glucose at fasting conditions. Additionally, the maqui berry extract affects absorption of glucose, which was attributed by other groups to SGLT1-inhibition.

Methods: Because this activity profile suggests promising potential for improving glucose metabolism in prediabetes, we investigated in a three months trial the effects of Delphinol® in 31 subjects, presenting just diagnose, moderate glucose intolerance, measuring HbA1c, glucose tolerance and lipid profile in monthly intervals.

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Background: This multicentre, randomised, double-blind, placebo-controlled trial was performed to determine whether the use of oral probiotic preparation (prOVag®) containing three Lactobacillus strains together with standard metronidazole treatment and also targeted antibiotic treatment (following the failure of metronidazole therapy) could reduce the recurrence rates of bacterial vaginosis (BV) and aerobic vaginitis (AV).

Methods: Patients at private gynaecological clinics in Poland with histories of recurrent BV/AV and current symptoms were randomly allocated to receive metronidazole and probiotic or placebo, and assessed monthly on visits II and III-V. The total number of study visits was 5-6 (I, II, II bis - if applicable, III, IV, V).

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In article experience of application of low-energy shock and wave therapy for men with a chronic pelvic pain syndrome is described.

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The Role of Kisspeptin in the Onset of Puberty and in the Ovulatory Mechanism: A Mini-review.

J Pediatr Adolesc Gynecol

October 2015

Reproductive Health Research Institute, Biomedical Division, Santiago, Chile; Pontificia Universidad Católica de Chile, Vicerrectoría de Comunicaciones y Educación Continua, Santiago, Chile.

The onset of puberty has been a fascinating topic for reproductive endocrinologists for decades; however, its underlying physiological mechanisms have remained elusive until recently. The discovery and understanding of the effects exerted by the peptide hormone kisspeptin have shed light on this research area. This review is aimed to discuss the functions of kisspeptin, with special focus on its role in the onset of puberty and in the ovulatory mechanism.

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Article Synopsis
  • - The study aimed to evaluate how well women can identify their fertile window using self-observations of cervical mucus and basal body temperature, while undergoing ovarian ultrasounds.
  • - Results showed that self-identifying any cervical mucus had 100% sensitivity (correctly identifying fertile days) but low specificity (many false positives), making the clinical fertile window 11 days long, while identifying peak mucus led to a sensitivity of 96% and better specificity.
  • - The findings suggest that recognizing peak mucus can enhance accurate self-detection of the fertile window, which may help couples trying to conceive to time intercourse more effectively.
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