Publications by authors named "George A Stamatiades"

Article Synopsis
  • The study aims to uncover genetic changes linked to prolactinomas, ultimately identifying a mutation (ESR1Y537S) in an aggressive case of this tumor type at Brigham and Women's Hospital.
  • A group of twenty patients was analyzed using advanced sequencing techniques, revealing the ESR1Y537S mutation in a post-menopausal woman, which is known to enhance estrogen receptor activity without needing a hormone trigger.
  • The discovery of this mutation allowed for targeted treatment with elacestrant, in combination with radiotherapy, effectively managing tumor growth and significantly lowering prolactin levels in the patient.
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Craniopharyngiomas are tumors originating from the infundibular stalk, extending to the parasellar and suprasellar region, thereby conferring multiple risks of this region. In particular, hypothalamic and pituitary damage related to its natural history as well as treatment effects of craniopharyngiomas substantially affect life expectancy and quality of life. Here, we describe an adult patient presenting with polyuria, memory, and visual field impairment secondary to concurrent craniopharyngioma and intraventricular glioma.

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Background/objective: Diabetic ketoacidosis (DKA) during pregnancy is an obstetric emergency associated with a higher rate of maternofetal morbidity and mortality. Pregnancy itself is a ketosis-prone state and several unique mechanisms predispose to the development of insulin resistance, which can be further exacerbated by acute stressors such as infection. Thus, pregnant patients who additionally contract COVID-19 may be at an even higher risk of development of DKA.

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Gonadotropin-releasing hormone (GnRH) regulates gonadal function via its stimulatory effects on gonadotropin production by pituitary gonadotrope cells. GnRH is released from the hypothalamus in pulses and GnRH pulse frequency differentially regulates follicle-stimulating hormone (FSH) and luteinizing hormone (LH) synthesis and secretion. The GnRH receptor (GnRHR) is a G protein-coupled receptor that canonically activates Gα q/11-dependent signaling on ligand binding.

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Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2), the causative agent of Coronavirus disease 19 (COVID-19), is a novel human Coronavirus that is responsible for about 300,000 deaths worldwide. To date, there is no confirmed treatment or vaccine prevention strategy against COVID-19. Due to the urgent need for effective treatment, drug repurposing is regarded as the immediate option.

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BACKGROUND Sodium glucose co-transporter 2 (SGLT2) inhibitors have become an appealing treatment for diabetes due to their favorable cardiac and renal outcomes. However, reports continue to emerge describing potentially life-threatening adverse events such as Fournier's gangrene and diabetic ketoacidosis associated with their use. Herein, we present a case of simultaneous Fournier's gangrene and diabetic ketoacidosis after initiation of treatment with canagliflozin.

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The hypothalamic decapeptide, GnRH, is the gatekeeper of mammalian reproductive development and function. Activation of specific, high-affinity cell surface receptors (GnRH receptors) on gonadotropes by GnRH triggers signal transduction cascades to stimulate the coordinated synthesis and secretion of the pituitary gonadotropins FSH and LH. These hormones direct gonadal steroidogenesis and gametogenesis, making their tightly regulated production and secretion essential for normal sexual maturation and reproductive health.

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Human pesticide exposure can occur both occupationally and environmentally during manufacture and after the application of indoor and outdoor pesticides, as well as through consumption via residues in food and water. There is evidence from experimental studies that numerous pesticides, either in isolation or in combination, act as endocrine disruptors, neurodevelopmental toxicants, immunotoxicants, and carcinogens. We reviewed the international literature on this subject for the years between 1990 and 2017.

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Background: Despite reports of fungal infections in patients with inflammatory bowel disease (IBD), their clinical and microbiological characteristics remain unknown.

Objectives: The aim of this systematic review was to examine all available evidence regarding fungal infections in patients with IBD.

Methods: Systematic search of PubMed (through 27 May 2017) for studies providing data on clinical, microbiological, treatment and outcome data of fungal infections in patients with IBD.

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The precise orchestration of hormonal regulation at all levels of the hypothalamic-pituitary-gonadal axis is essential for normal reproductive function and fertility. The pulsatile secretion of hypothalamic gonadotropin-releasing hormone (GnRH) stimulates the synthesis and release of follicle-stimulating hormone (FSH) and luteinizing hormone (LH) by pituitary gonadotropes. GnRH acts by binding to its high affinity seven-transmembrane receptor (GnRHR) on the cell surface of anterior pituitary gonadotropes.

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