41 results match your criteria: "University of Sao Paulo School of Medicine (FMUSP)[Affiliation]"

Background: Arteriovenous Malformations (AVMs) pose a risk of neurologic deterioration, particularly when located in eloquent areas. While awake surgery is well-established for treating low-grade gliomas near eloquent areas, its efficacy for AVMs is less conclusively reported.

Methods: This study conducted a systematic review and individual patient data (IPD) meta-analysis following Cochrane Collaboration and PRISMA guidelines.

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Nutrients, Physical Activity, and Mitochondrial Dysfunction in the Setting of Metabolic Syndrome.

Nutrients

February 2023

Laboratory of Nutrition and Metabolic Surgery of the Digestive Tract (LIM 35), Department of Gastroenterology, University of São Paulo School of Medicine-FMUSP, Av. Dr. Arnaldo, 455, 2° andar, sala 2208, Cerqueira César, São Paulo 01246-903, SP, Brazil.

Metabolic syndrome (MetS) is a cluster of metabolic risk factors for diabetes, coronary heart disease, non-alcoholic fatty liver disease, and some tumors. It includes insulin resistance, visceral adiposity, hypertension, and dyslipidemia. MetS is primarily linked to lipotoxicity, with ectopic fat deposition from fat storage exhaustion, more than obesity per se.

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Hepatitis B virus (HBV) is intrinsically oncogenic and related to hepatocellular carcinoma (HCC). Predictive scores of HCC have been developed but have been poorly studied in admixed populations. Therefore, we aimed to evaluate the performance of PAGE-B and mPAGE-B scores for HCC prediction in HBV Brazilian patients and factors related to HCC occurrence.

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Prevalence of Hepatocellular Carcinoma and Its Characteristics in 10 Years of Transplantation in a University Hospital in Brazil.

Transplant Proc

June 2022

Division of Gastroenterology (Gastrocentro), Department of Internal Medicine, School of Medical Sciences of University of Campinas (Unicamp), Campinas, Brazil; Unit of Liver Transplantation, Hospital de Clinicas, University of Campinas (Unicamp), Campinas, Brazil.

Article Synopsis
  • - Hepatocellular carcinoma (HCC) is the leading type of liver cancer, making up 90% of liver tumors, and treatment relies on factors like tumor size and liver function, with liver transplants being the best option for cure according to strict criteria.
  • - In Brazil, the Brazilian Criteria for liver transplants considers HCC tumors starting from 2 cm, contrasting with the original Milan Criteria, which allows for tumors of a different size and number.
  • - A study in a university hospital over 10 years found that out of 485 liver transplants, 243 had HCC, mainly affecting men with hepatitis C, and patients with tumors meeting the Milan Criteria had better survival rates compared to those that did
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Fibroblast growth factor 21 (FGF21) signaling and genetic factors are involved in non-alcoholic fatty liver disease (NAFLD) pathogenesis. However, these factors have rarely been studied in type 2 diabetes mellitus (T2D) patients from admixed populations such as in those of Brazil. Therefore, we aimed to evaluate rs738409 patanin-like phospholipase domain-containing protein () and rs499765 polymorphisms in T2D, and their association with NAFLD, liver fibrosis, and serum biomarkers (FGF21 and cytokeratin 18 levels).

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Impact of parathyroidectomy on quality of life in multiple endocrine neoplasia type 1.

Endocr Connect

June 2022

Endocrine Genetics Unit (LIM-25), Endocrinology Division, University of São Paulo School of Medicine (FMUSP), Faculdade de Medicina da Universidade de São Paulo (FMUSP), Hospital das Clinicas (HCFMUSP), São Paulo, São Paulo, Brazil.

Background: Potential influences of parathyroidectomy (PTx) on the quality of life (QoL) in multiple endocrine neoplasia type 1-related primary hyperparathyroidism (HPT/MEN1) are unknown.

Method: Short Form 36 Health Survey Questionnaire was prospectively applied to 30 HPT/MEN1 patients submitted to PTx (20, subtotal; 10, total with autograft) before, 6 and 12 months after surgery. Parameters that were analyzed included QoL, age, HPT-related symptoms, general pain, comorbidities, biochemical/hormonal response, PTx type and parathyroid volume.

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Article Synopsis
  • The study focuses on the reasons for performing percutaneous liver biopsies (PLB) and the associated complications in an outpatient setting over five years.
  • It analyzed 532 biopsies from 524 patients, finding that MAFLD has become a more common reason for biopsies compared to HCV infection, while pain during the procedure was more frequently reported by females.
  • The overall complication rate was low, with only 2.1% experiencing serious complications and no deaths, highlighting the safety of PLB but emphasizing the need for better pain management strategies, especially for women.
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EncephalApp Stroop Test validation for the screening of minimal hepatic encephalopathy in Brazil.

Ann Hepatol

March 2022

Division of Gastroenterology (Gastrocentro), University of Campinas (Unicamp), Campinas, Brazil; Division of Clinical Gastroenterology and Hepatology, Department of Gastroenterology, University of São Paulo School of Medicine (FMUSP), Sao Paulo, Brazil.

Introduction And Objectives: The EncephalApp Stroop Test was developed to more easily diagnose minimal hepatic encephalopathy (MHE). A cut-off of >274.9sec (ONtime+OFFtime) reached a 78% sensitivity and 90% specificity in the validation study, but it has been poorly studied in Brazil.

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Platinum resistance in gynecologic malignancies: Response, disease free and overall survival are predicted by biochemical signature: A metabolomic analysis.

Gynecol Oncol

October 2021

Nagourney Cancer Institute, 750 East 29th Street, 90806 Long Beach, CA, USA; Metabolomycs, Inc., 750 East 29th Street, 90806 Long Beach, CA, USA; Memorial Medical Center of Long Beach, Todd Cancer Institute, 2810 Long Beach Blvd, Long Beach 90806, CA, USA; Department of Obstetrics and Gynecology, University of California Irvine (UCI) School of Medicine, 101 The City Drive South, Orange 92868, CA, USA.

Objective: Platinum resistance, defined as the lack of response or relapse within six months of platinum-based chemotherapy, is an important determinant of survival in gynecologic cancer. We used quantitative Mass Spectrometry to identify metabolic signatures that predict platinum resistance in patients receiving chemotherapy for gynecologic cancers.

Methods: In this study 47 patients with adenocarcinoma of the ovary or uterus who were candidates for carboplatin plus paclitaxel submitted blood for quantitation of metabolites and surgical specimens for the isolation 3-dimensional organoids used to measure individual patient platinum resistance, ex vivo.

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Biomechanical Analysis of Cadaveric Thoracic Aorta Zones: The Isthmus is the Weakest Region.

Ann Vasc Surg

November 2021

Department of Surgery, Division of Vascular and Endovascular Surgery, Laboratory of Medical Investigation, University of Sao Paulo School of Medicine (FMUSP), Sao Paulo, Sao Paulo, Brazil.

Background: The thoracic aorta is a site of multiple pathological processes, such as aneurysms and dissections. When considering the development of endovascular devices, this vessel has been extensively manipulated because of aortic diseases, as well as to serve as a route for procedures involving the head and neck vessels. Therefore, the aim of the present study was to obtain biomechanical experimental information about the strength and deformability of this vessel.

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Background: This study aimed to identify novel plasma metabolic signatures with possible clinical relevance during the aging process. A biochemical quantitative phenotyping platform, based on targeted electrospray ionization tandem mass spectrometry technology, was used for the identification of any eventual perturbed biochemical pathway by the aging process in prospectively collected peripheral blood plasma from 166 individuals representing the population of São Paulo city, Brazil.

Results: Indoleamine 2,3-dioxygenase (IDO) activity (Kyn/Trp) was significantly elevated with age, and among metabolites most associated with elevations in IDO, one of the strongest correlations was with arginase (Orn/Arg), which could also facilitate the senescence process of the immune system.

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Biomechanical and histological data from abdominal aortas harvested in autopsy.

Data Brief

April 2021

Vascular and Endovascular Surgery Division, Department of Surgery, Laboratory for Medical Investigation #2, (LIM 02), University of São Paulo School of Medicine (FMUSP), Av. Dr. Arnaldo, 455 - Cerqueira César - Postal code: 01246903 - Room 1312, São Paulo, SP, Brazil.

This data article describes biomechanical and histological information of abdominal aortas harvested in autopsy. Eight abdominal aorta aneurysms (AAA) and 30 normal diameter abdominal aortas were collected and submitted to an inflation test up to their rupture. This inflation procedure was part of the research entitled "Experimental study of rupture pressure and elasticity of abdominal aortic aneurysms found at autopsy", submitted to Annals of Vascular Surgery.

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The role of PNPLA3 and TM6SF2 polymorphisms on liver fibrosis and metabolic abnormalities in Brazilian patients with chronic hepatitis C.

BMC Gastroenterol

February 2021

Division of Clinical Gastroenterology and Hepatology, LIM07, Department of Gastroenterology, University of São Paulo School of Medicine (FMUSP), Av. Dr. Enéas de Carvalho Aguiar no 255, Instituto Central, # 9159, São Paulo, 05403-900, Brazil.

Background: Despite the growing body of knowledge about TM6SF2 and PNPLA3 polymorphisms in non-alcoholic fatty liver disease, their influence in the spectrum of HCV liver disease is not yet fully defined. Besides that, admixed populations, such as Brazilians, were not included in most of the studies.

Methods: This cross-sectional study enrolled 365 treatment-naïve patients with HCV and 134 healthy individuals.

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Autopsy continues to play an essential role in monitoring opportunistic fungal infections. However, few studies have analysed the historical trends of fungal infections in autopsies. Here, we analyse available data on fungal infections obtained from autopsy reports during 85 years of autopsies performed by the largest autopsy service in Brazil.

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Biomechanical Properties of the Periaortic Abdominal Tissue: It is Not as Fragile as It Seems.

Ann Vasc Surg

April 2021

Vascular and Endovascular Surgery Division, Department of Surgery, Laboratory for Medical Investigation #2, (LIM 02), University of São Paulo School of Medicine (FMUSP), São Paulo, São Paulo, Brazil.

Background: The perivascular adipose tissue has been studied as a critical element that could influence physiological and disease processes of the vessel covered by it. In terms of anatomy, during the abdominal aorta's dissection, it is possible to identify the periaortic adipose tissue and the periaortic parietal peritoneum lying over it, sealing the retroperitoneal space. They seem to be fragile layers, with apparently no biomechanical role in the abdomen.

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Biomechanics data of human supra-aortic trunks and abdominal visceral arteries harvested during autopsy.

Data Brief

December 2020

Vascular and Endovascular Surgery Division, Department of Surgery, Laboratory for Medical Investigation #2, (LIM 02). University of São Paulo School of Medicine (FMUSP). Dr. Arnaldo, 455 - room 1312 - Cerqueira César, Postal code: 01246-903 - São Paulo - SP, Brasil.

The present dataset describes the biomechanical properties of the supra-aortic trunks (brachiocephalic trunk, left common carotid artery, and left subclavian artery) and some of the visceral branches of the abdominal aorta (celiac trunk, superior mesenteric artery, and renal arteries). The specimens have been harvested from 27 adult donors during the autopsy procedure. The vessels were submitted to uniaxial biomechanical tensile tests, and values of failure stress, failure tension, and failure strain were obtained.

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Background: Resistance and elasticity of normal and aneurysmal aorta walls are directly associated with this vessel's growth and rupture. This study aims to experimentally analyze the biomechanical behavior of aneurysmal specimens found at autopsy, comparing them with normal diameter aortas removed from age-matched donors.

Methods: Thirty-eight human aortas (30 normal aortas; 8 infrarenal abdominal aortic aneurysms) were harvested during autopsy.

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Chagas disease, caused by the protozoan , is endemic in Latin America. Thirty percent of infected individuals develop chronic Chagas cardiomyopathy (CCC), an inflammatory dilated cardiomyopathy that is the most important clinical consequence of infection, while the others remain asymptomatic (ASY). IFN-γ and IFN-γ-producing Th1-type T cells are increased in peripheral blood and CCC myocardium as compared to ASY patients, while the Th1-antagonizing cytokine IL-10 is more expressed in ASY patients.

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Background: Direct access endoscopy (DAE) is the procedure performed without the pre-evaluation of the patient by a specialist. It is widely available in many medical services around the world, but there is lack of data about this strategy in the setting of the public health system in Brazil. Therefore, the aim of this study is to compare the main endoscopic findings of upper gastrointestinal endoscopy requested through DAE and by specialists.

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Altered cell metabolism is a hallmark of cancer and critical for its development. Particularly, activation of one-carbon metabolism in tumor cells can sustain oncogenesis while contributing to epigenetic changes and metabolic adaptation during tumor progression. We assessed whether increased one-carbon metabolism activity is a metabolic feature of invasive ductal carcinoma (IDC).

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Lysosomal acid lipase deficiency is a poorly diagnosed genetic disorder, leading to accumulation of cholesterol esters and triglycerides in the liver, with progression to chronic liver disease, dyslipidemia, and cardiovascular complications. Lack of awareness on diagnosis of this condition may hamper specific treatment, which consists on enzymatic replacement. It may prevent the progression of liver disease and its complications.

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Introduction And Aim: Studies have shown that two polymorphisms were associated with steatosis and progression of non-alcoholic fatty liver disease (NAFLD) in different populations: the Patatin-like Phospholipase Domain Containing 3 (PNPLA3) and Transmembrane 6 Superfamily Member 2 (TM6SF2). However, the frequency and significance of these polymorphisms in an admixed population, i.e.

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Unlabelled: In this study, we tested whether the speech recognition, through radio communications, of cochlear implant (CI) users inside a noisy helicopter cockpit is adequate for safe flight.

Method: Speech recognition tests (sentences, numbers and disyllables) through a very-high-frequency radio were administered to 12 CI users in a soundproof booth, inside a helicopter with the engine turned off and turned on.

Results: In quiet environments, radio communications were impacted only for disyllable intelligibility, but in noisy situations, all tests were affected.

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