The aim of this study was to investigate the molecular mechanisms underlying drought acclimation in coffee plants by the identification of candidate genes (CGs) using different approaches. The first approach used the data generated during the Brazilian Coffee expressed sequence tag (EST) project to select 13 CGs by an in silico analysis (electronic northern). The second approach was based on screening macroarrays spotted with plasmid DNA (coffee ESTs) with separate hybridizations using leaf cDNA probes from drought-tolerant and susceptible clones of Coffea canephora var.
View Article and Find Full Text PDFDengue is the major arthropod-borne human viral disease, for which no vaccine or specific treatment is available. We used NMR, zeta potential measurements and atomic force microscopy to study the structural features of the interaction between dengue virus C (capsid) protein and LDs (lipid droplets), organelles crucial for infectious particle formation. C protein-binding sites to LD were mapped, revealing a new function for a conserved segment in the N-terminal disordered region and indicating that conformational selection is involved in recognition.
View Article and Find Full Text PDFFolliculosebaceous cystic hamartoma (FSCH) is a cutaneous hamartoma of pilosebaceous origin that usually occurs on the face. We present what we believe is only the second reported case of FSCH of the external auditory canal, and the first in an adult. The patient was a 59-year-old woman who presented with a 4-year history of a firm nodule on the left external auditory canal that had caused hearing loss, pruritus, and pain.
View Article and Find Full Text PDFAims: To characterize the variation in virulence of Helicobacter pylori associated with CagA Glu-Pro-Ile-Tyr-Ala (EPIYA) motifs, and to explore its relationship with the histopathological features of chronic gastritis and with the development of gastric carcinoma.
Methods And Results: A total of 169 H. pylori-infected patients with chronic gastritis and gastric carcinoma were studied.
Background: Lynch syndrome (LS) is the most common form of inherited predisposition to colorectal cancer (CRC), accounting for 2-5% of all CRC. LS is an autosomal dominant disease characterized by mutations in the mismatch repair genes mutL homolog 1 (MLH1), mutS homolog 2 (MSH2), postmeiotic segregation increased 1 (PMS1), post-meiotic segregation increased 2 (PMS2) and mutS homolog 6 (MSH6). Mutation risk prediction models can be incorporated into clinical practice, facilitating the decision-making process and identifying individuals for molecular investigation.
View Article and Find Full Text PDFObjective: To evaluate the effects of bromopride on the formation of adhesions and anastomotic healing in the left colon of rats.
Methods: We divided 40 rats into two groups of 20 animals, administration of bromopride (study group-E) or saline (control group-C). Each group was divided into subgroups containing 10 animals each for euthanasia in the third (C3 and E3) or the seventh (E7 and C7) postoperative days.
Background And Objectives: The efficacy of posterior brachial plexus block for shoulder surgeries is demonstrated by different authors. However, there is no consensus on the ideal mass and volume of local anesthetic to be employed. The objetive of this study was to compare different volumes and masses of ropivacaine in posterior brachial plexus block in arthroscopic surgeries of the shoulder.
View Article and Find Full Text PDFFabry disease (FD) is a rare X-linked lysosomal storage disorder of glycosphingolipids, mostly globotriaosylceramide (Gb3). Proteinuric chronic kidney disease develops frequently, and recognition of Fabry nephropathy on a kidney biopsy may be the first clue to the underlying diagnosis. Since the accumulated glycosphingolipids are largely extracted by the paraffin-embedding procedure, the most characteristic feature of Fabry nephropathy on routine light microscopy (LM) is nonspecific cell vacuolization.
View Article and Find Full Text PDFAtrophic gastritis, intestinal metaplasia, and epithelial dysplasia of the stomach are common and are associated with an increased risk for gastric cancer. In the absence of guidelines, there is wide disparity in the management of patients with these premalignant conditions. The European Society of Gastrointestinal Endoscopy (ESGE), the European Helicobacter Study Group (EHSG), the European Society of Pathology (ESP) and the Sociedade Portuguesa de Endoscopia Digestiva (SPED) have therefore combined efforts to develop evidence-based guidelines on the management of patients with precancerous conditions and lesions of the stomach (termed MAPS).
View Article and Find Full Text PDFAtrophic gastritis, intestinal metaplasia, and epithelial dysplasia of the stomach are common and are associated with an increased risk for gastric cancer. In the absence of guidelines, there is wide disparity in the management of patients with these premalignant conditions. The European Society of Gastrointestinal Endoscopy, the European Helicobacter Study Group, the European Society of Pathology, and the Sociedade Portuguesa de Endoscopia Digestiva have therefore combined efforts to develop evidence-based guidelines on the management of patients with precancerous conditions and lesions of the stomach.
View Article and Find Full Text PDFActa Cir Bras
January 2012
Purpose: To evaluate the influence of carbon dioxide pneumoperitoneum on abdominal wall wound healing in rats.
Methods: Eighty rats underwent laparotomy, segmental left colon resection, and anastomosis. The animals were divided into three experimental groups and one control group: EI = pneumoperitoneum for 30 minutes before laparotomy (n=20); EII = pneumoperitoneum for 30 minutes after abdominal closure (n=20); EIII = pneumoperitoneum for 30 minutes before laparotomy and 30 minutes after abdominal closure (n=20); C = control group, without pneumoperitoneum (n=20).
Intestinal differentiation, mediated by CDX2, may occur both in intestinal and in diffuse gastric carcinomas. In an attempt to ascertain the environmental determinants of the intestinal differentiation pathway, we aimed to compare the exposure to environmental factors in gastric cancer cases according to the CDX2 expression status. We evaluated 270 patients undergoing gastrectomy due to gastric adenocarcinoma.
View Article and Find Full Text PDFDengue virus (DENV) affects millions of people, causing more than 20,000 deaths annually. No effective treatment for the disease caused by DENV infection is currently available, partially due to the lack of knowledge on the basic aspects of the viral life cycle, including the molecular basis of the interaction between viral components and cellular compartments. Here, we characterized the properties of the interaction between the DENV capsid (C) protein and hepatic lipid droplets (LDs), which was recently shown to be essential for the virus replication cycle.
View Article and Find Full Text PDFA high intake of dietary antioxidant compounds has been hypothesized to be an appropriate strategy to reduce gastric cancer (GC) development. We investigated the effect of dietary total antioxidant capacity (TAC) in relation to GC in the European Prospective Investigation into Cancer (EPIC) study including 23 centers in 10 European countries. A total of 521,457 subjects (153,447 men) aged mostly 35-70 years old, were recruited largely between 1992 and 1998.
View Article and Find Full Text PDFGastric carcinogenesis is a multifactorial process involving host gene and environmental interactions. Diverse case-control studies using different types of controls addressed the familial aggregation role for gastric cancer development. Our aim is to discuss the advantages and expected bias according to the different type of eligible controls.
View Article and Find Full Text PDFPurpose: Evaluate the effects of bromopride on abdominal wall healing of rats with induced peritoneal sepsis after segmental colectomy and colonic anastomosis.
Methods: Forty rats underwent sectioning of the left colon and end-to-end anastomosis and were divided into two groups of 20 animals for the administration of bromopride (bromopride group - B) or saline solution (control group - C). Each group was divided into subgroups of 10 animals each to be killed on the third (GB3 and GC3) or seventh postoperative day (GB7 and GC7).
Purpose: To evaluate the effects of abdominal sepsis on adhesion formation and colon anastomosis healing in rats.
Methods: Forty rats were distributed in two groups containing 20 rats each for left colon anastomosis in the presence (Group S) or absence (Group N) of induced sepsis by cecal ligation and puncture. Each group was divided into subgroups for euthanasia on the third (N3 and S3) or seventh (N7 or S7) post-operative day.
Purpose: To evaluate the effects of metoclopramide on abdominal wall healing in rats in the presence of sepsis.
Methods: 40 rats divided into two groups of twenty animals, subdivided into two subgroups of 10 animals each: group (E) - treated with metoclopramide, and saline-treated control group. The two groups were divided into subgroups of 10 to be killed on the 3rd day (n = 10) or day 7 (n = 10) after surgery.
Purpose: To evaluate the influence of sepsis in the process of wound healing in the abdominal wall.
Methods: 40 rats divided into two groups of twenty animals: group of study (E) - septic, and the control group (C) - not septic. The two groups were divided into subgroups of 10 to be killed on the third day (n = 10) or seventh (n = 10) postoperative.
Braz J Med Biol Res
November 2011
Highly efficient mechanisms regulate intracellular calcium (Ca2+) levels. The recent discovery of new components linking intracellular Ca2+ stores to plasma membrane Ca2+ entry channels has brought new insight into the understanding of Ca2+ homeostasis. Stromal interaction molecule 1 (STIM1) was identified as a Ca2+ sensor essential for Ca2+ store depletion-triggered Ca2+ influx.
View Article and Find Full Text PDFProtein-losing enteropathy is a rare manifestation of systemic lupus erythematosus. We report the case of an 18-year-old woman that presented initially with diarrhoea and anasarca. During evaluation, there was low serum albumin of 1.
View Article and Find Full Text PDFBackground: Epidemiologic data suggest that diet is a risk factor in the etiology of gastric cancer. However, the role of dietary fatty acids, a modifiable risk factor, remains relatively unexplored.
Objective: The objective of this study was to determine the association of plasma phospholipid fatty acid concentrations, as biomarkers of exogenous and endogenously derived fatty acids, with the risk of gastric adenocarcinoma in a case-control study nested within the European Prospective Investigation into Cancer and Nutrition-Europe Gastric Cancer (EPIC-EURGAST).
The purpose of this study was to compare repetition performance and rating of perceived exertion (RPE) with 1-, 3-, or 5-minute rest intervals between sets of multi and single-joint resistance exercises. Fifteen resistance trained men (23.6 ± 2.
View Article and Find Full Text PDFThe role of E-cadherin in tumorigenesis has been attributed to its ability to suppress invasion and metastization. However, E-cadherin impairment may have a wider impact on tumour development. We have previously shown that overexpression of mutant human E-cadherin in Drosophila produces a phenotype characteristic of downregulated Notch.
View Article and Find Full Text PDFBackground: Since the use of laminin-5 as a marker of invasiveness has been proposed by several authors, our objective was to compare the expression of this protein in pseudocarcinomatous hyperplasia and squamous cell carcinoma (SCC).
Methods: Sixty-four paraffin-embedded skin biopsy samples with diagnosis of epidermal hyperplasia (non-pseudocarcinomatous), pseudocarcinomatous hyperplasia, actinic keratosis/carcinoma in situ, microinvasive and frankly invasive SCC were obtained for immunohistochemical study.
Results: Adjacent normal epithelium and epidermal hyperplasia (non-pseudocarcinomatous) showed no staining.