54 results match your criteria: "Laboratory of Oncoendocrinology; N.N.Petrov Research Institute of Oncology; St.Petersburg[Affiliation]"

International initiative for a curated variant database improving the diagnosis of hereditary paraganglioma and pheochromocytoma.

J Med Genet

August 2022

Genetics Department, Assistance Publique-Hôpitaux de Paris (AP-HP), Hôpital Européen Georges Pompidou, Paris, France

Background: is one of the major genes predisposing to paraganglioma/pheochromocytoma (PPGL). Identifying pathogenic variants in patients with PPGL is essential to the management of patients and relatives due to the increased risk of recurrences, metastases and the emergence of non-PPGL tumours. In this context, the 'NGS and PPGL (NGSnPPGL) Study Group' initiated an international effort to collect, annotate and classify variants and to provide an accurate, expert-curated and freely available variant database.

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An expert consensus panel convened by the Italian Association for Inherited and Familial Gastrointestinal Tumors (Associazione Italiana per lo Studio della Familiarità ed Ereditarietà dei Tumori Gastrointestinali, AIFEG) reviewed the literature and agreed on a number of position statements regarding the definition and management of polyposis coli without an identified pathogenic mutation on the APC or MUTYH genes, defined in the document as NAMP (non-APC/MUTYH polyposis).

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Background: Adequate levels of selenium (Se) have protective effects against several chronic diseases, such as obesity. The aim of this study was to assess the effect of Se supplementation in a selected group of patients with obesity.

Methods: This randomized prospective study included 37 overweight/obese individuals aged 18-65 years, who adopted a slightly hypocaloric diet for 3 months.

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In contrast to traditional 2D cell cultures, both 3D models and organ-on-a-chip devices allow the study of the physiological responses of human cells. These models reconstruct human tissues in conditions closely resembling the body. Translation of these techniques into practice is hindered by associated labor costs, a need which may be remedied by automation.

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Hormone-dependent tissues' cancers (mainly breast and endometrial and several others) are among the most frequent malignancies in adults and are often discussed in context of their correlation with other chronic noncommunicable diseases (NCDs), for example, cardiovascular and cerebrovascular conditions, and their risk factors, which may also be hormone metabolic. An idea that is often expressed delineates common factors leading to NCDs of malignant and nonmalignant nature. However, this idea is not always confirmed by study results.

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Article Synopsis
  • - The study aims to investigate the long-term outcomes of patients with bilateral pheochromocytomas who underwent either total or cortical-sparing adrenalectomies, focusing on mortality risks, adrenal insufficiency, and tumor recurrence.
  • - Data from 625 patients treated between 1950 and 2018 revealed a significant presence of genetic mutations related to pheochromocytomas, with almost half of the patients experiencing adrenal insufficiency after total adrenalectomy, while complications were notably less in those who had cortical-sparing procedures.
  • - Of the 849 surgeries conducted, 52% were planned as cortical-sparing, with a success rate of 76.5%. The findings highlight the risks of long-term complications for patients post
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To compare endocrine characteristics of  endometrial cancer (EC) patients based on recent molecular EC types classification.  A total of 234 treatment-naive EC patients as well their tumors were studied. Patients with mutations demonstrated tendency to lower body mass index (BMI) and higher serum estradiol.

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Metformin: not only per os.

Expert Rev Endocrinol Metab

March 2018

a Laboratory of Oncoendocrinology , N.N.Petrov National Medical Research Center of Oncology, St.Petersburg , Russia.

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Correction to: Paragangliomas arise through an autonomous vasculo-angio-neurogenic program inhibited by imatinib.

Acta Neuropathol

May 2018

Laboratory of General Pathology, Center of Aging Science and Translational Medicine (CeSI-MeT), Gabriele d'Annunzio University, Via Luigi Polacchi 11, 66100, Chieti, Italy.

The given and family names of two co-authors were incorrect in the published article. The correct spelling should read as: Sampath Chandra Prasad and Vinagolu K Rajasekhar.

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Paragangliomas arise through an autonomous vasculo-angio-neurogenic program inhibited by imatinib.

Acta Neuropathol

May 2018

Laboratory of General Pathology, Center of Aging Science and Translational Medicine (CeSI-MeT), Gabriele d'Annunzio University, Via Luigi Polacchi 11, 66100, Chieti, Italy.

Tumours can be viewed as aberrant tissues or organs sustained by tumorigenic stem-like cells that engage into dysregulated histo/organogenetic processes. Paragangliomas, prototypical organoid tumours constituted by dysmorphic variants of the vascular and neural tissues found in normal paraganglia, provide a model to test this hypothesis. To understand the origin of paragangliomas, we built a biobank comprising 77 cases, 18 primary cultures, 4 derived cell lines, 80 patient-derived xenografts and 11 cell-derived xenografts.

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The question hidden in the title of this manuscript (whether the topic develops or remains constant) is important for all areas of science. It is also a serious problem for endometrial cancer (EC) study. In recent times the incidence of EC gradually increases in parallel with obesity epidemics.

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Background: As endometrial cancer (EC) prevalence increases with obesity, we aimed to determine whether EC characteristics depend upon obesity type: 'standard' (SO) or 'metabolically healthy obesity' (MHO).

Patients & Methods: 258 EC patients were included. Data on anthropometry, blood hormones, lipids and glucose, and tumor features were collected.

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The changes in the brain signaling systems play an important role in etiology and pathogenesis of Type 2 diabetes mellitus (T2DM) and metabolic syndrome (MS), being a possible cause of these diseases. Therefore, their restoration at the early stages of T2DM and MS can be regarded as a promising way to treat and prevent these diseases and their complications. The data on the functional state of the brain signaling systems regulated by insulin, IGF-1, leptin, dopamine, serotonin, melanocortins and glucagon-like peptide-1, in T2DM and MS, are analyzed.

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Purpose: Adipose tissue products may contribute to endometrial cancer (EC) initiation and further growth that encourages the analysis of this issue in patients with different obesity phenotypes.

Methods/patients: Omental fat depot characteristics were studied in EC patients (n = 57) with "standard" (SO) or "metabolically healthy" (MHO) obesity. Collected omental samples were evaluated by immunohistochemistry /IHC/ for brown fat marker UCP1, CYP19 (aromatase) and macrophage infiltration markers (CD68, CD163, crown-like structures/CLS) expression.

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Telomerase (TERT) is overexpressed in 80% to 90% of primary tumors and contributes to sustaining the transformed phenotype. The identification of several TERT epitopes in tumor cells has elevated the status of TERT as a potential universal target for selective and broad adoptive immunotherapy. TERT-specific cytotoxic T lymphocytes (CTL) have been detected in the peripheral blood of B-cell chronic lymphocytic leukemia (B-CLL) patients, but display low functional avidity, which limits their clinical utility in adoptive cell transfer approaches.

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ARMC5 mutations have recently been identified as a common genetic cause of primary bilateral macronodular adrenal hyperplasia (PBMAH). We aimed to assess the prevalence of ARMC5 germline mutations and correlate genotype with phenotype in a large cohort of PBMAH patients. A multicenter study was performed, collecting patients from different endocrinology units in Italy.

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Metformin, a biguanide antidiabetic drug, is used to decrease hyperglycemia in patients with type 2 diabetes. Recently, the epidemiological studies revealed the potential of metformin as an anti-tumor drug for several types of cancer, including breast cancer. Anti-tumor metformin action was found to be mediated, at least in part, via activation of adenosine monophosphate-activated protein kinase (AMPK)-intracellular energy sensor, which inhibits the mammalian target of rapamycin (mTOR) and some other signaling pathways.

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Insulinemia, heterogeneity of obesity and the risk of different types of endometrial cancer: existing evidence.

Expert Rev Endocrinol Metab

January 2016

a Laboratory of Oncoendocrinology, NN Petrov Research Institute of Oncology, St. Petersburg , Russian Federation.

Due to a number of reasons, endometrial cancer is a point of interest not only for oncologists, but also for a variety of specialists - especially endocrinologists. The endocrinology of endometrial cancer can be firmly divided into two categories - steroid and non-steroid. The steroid approach dominated during several decades due to hyperestrogenization signs observed in some patients.

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Background: Prostate cancer is the most common cancer in men. Prostate-specific antigen has, however, insufficient diagnostic specificity. Novel complementary diagnostic approaches are greatly needed.

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In the last years the treatment of type 2 diabetes mellitus (DM2) was carried out using regulators of the brain signaling systems. In DM2 the level of the brain serotonin is reduced. So far, the effect of the increase of the brain serotonin level on DM2-induced metabolic and hormonal abnormalities has been studied scarcely.

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Aim: The goal of this study was to determine if the single nucleotide polymorphisms marking potential sensitivity to metformin (MF) correlate with hormone-metabolic status as well as with actual response to MF in postmenopausal cancer patients with or without Type 2 diabetes mellitus and in diabetics without cancer.

Patients & Methods: The carriage of ten different SNPs was evaluated in all patients by PCR, and hormone-metabolic status was estimated by anthropometry, ELISA and enzyme colorimetric assays. The response to daily 1-1.

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The functions of hypothalamic-pituitary-thyroid axis are attenuated in type 1 diabetes mellitus due to insulin deficiency. The use of intranasally administered insulin is of considerable interest for treatment of diabetes and cognitive disorders, but its effect on the thyroid system has not been investigated yet. We studied the influence of long-term treatment with intranasal insulin on the hypothalamic-pituitary-thyroid axis of nondiabetic rats and diabetic animals with streptozotocin models of acute and mild type 1 diabetes mellitus.

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