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1.
Genes Immun ; 16(8): 514-8, 2015 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-26378651

RESUMO

Although most hepatitis C virus (HCV)-infected individuals develop chronic infection, about 25% of them are able to clear the virus spontaneously without any therapeutic intervention. The aim of the present study was to identify genes associated with spontaneous HCV clearance in a population of Iranian patients. We genotyped 110 single-nucleotide polymorphisms (SNPs) in 59 selected--candidate--genes in a cohort of 107 HCV-infected participants who spontaneously cleared the infection and 176 participants whose infection persisted. Three out of the 110 SNPs were found to be associated with HCV outcome (P-values<0.03). rs11506105 in EGFR (epidermal growth factor receptor gene), and rs11881222 and rs12979860 in IL28B (interferon-λ3 gene). Multivariate logistic regression of the three markers showed that the A/A genotypes in both rs11506105 (EFGR) and rs11881222 (IL28B), and the C/C genotype in rs12979860 (IL28B) are associated with HCV clearance (recessive model: odds ratio (OR)=2.06, 95% confidence interval (95% CI)=1.09-3.88, P=0.025; OR=2.09, 95% CI=1.23-3.60, P=0.007; and OR=1.95, 95% CI=1.15-3.35, P=0.014 for rs11506105, rs12979860 and rs11881222, respectively). In conclusion, EGFR and IL28B SNPs are strong independent predictive markers of spontaneous viral clearance.


Assuntos
Receptores ErbB/genética , Hepacivirus/fisiologia , Hepatite C/genética , Interleucinas/genética , Polimorfismo de Nucleotídeo Único , Marcadores Genéticos , Hepatite C/imunologia , Humanos , Interferons , Irã (Geográfico) , Análise Multivariada , Remissão Espontânea
2.
Br J Cancer ; 111(12): 2235-41, 2014 Dec 09.
Artigo em Inglês | MEDLINE | ID: mdl-25247319

RESUMO

BACKGROUND: Oesophageal squamous cell carcinoma (ESCC) is a fatal disease with 5-year survival rates of <5% in Northern Iran. Oesophageal squamous dysplasia (ESD) is the precursor histologic lesion of ESCC. This pilot study was conducted to assess the feasibility, safety, and acceptability of non-endoscopic cytological examination of the oesophagus and to provide initial data on the accuracy of cytological atypia for identifying patients with ESD in this very-high-risk area. METHODS: Randomly selected asymptomatic participants of the Golestan Cohort Study were recruited. A cytological specimen was taken using a capsule sponge device and evaluated for atypical cells. Sections of the cytological specimen were also stained for p53 protein. Patient acceptability was assessed using a visual analogue scale. The cytological diagnosis was compared with a chromoendoscopic examination using Lugol's solution. RESULTS: Three hundred and forty-four subjects (43% male, mean (s.d.) age 55.6 (7.9) years) were referred to the study clinic. Three hundred and twelve met eligibility criteria and consented, of which 301 subjects (96.5%) completed both cytological and endoscopic examinations. There were no complications. Most of the participants (279; 92.7%) were satisfied with the examination. The sensitivity and specificity of the cytological examination for identifying subjects with high-grade ESD were 100 and 97%, respectively. We found an accuracy of 100% (95% CI=99-100%) for a combination of cytological examination and p53 staining to detect high-grade ESD. CONCLUSIONS: The capsule sponge methodology seems to be a feasible, safe, and acceptable method for diagnosing precancerous lesions of the oesophagus in this population, with promising initial accuracy data for the detection of high-grade ESD.


Assuntos
Carcinoma de Células Escamosas/diagnóstico , Neoplasias Esofágicas/diagnóstico , Lesões Pré-Cancerosas/diagnóstico , Carcinoma in Situ/diagnóstico , Carcinoma in Situ/patologia , Carcinoma de Células Escamosas/patologia , Estudos de Coortes , Neoplasias Esofágicas/patologia , Carcinoma de Células Escamosas do Esôfago , Feminino , Humanos , Irã (Geográfico) , Masculino , Pessoa de Meia-Idade , Projetos Piloto , Lesões Pré-Cancerosas/patologia , Fatores de Risco
3.
Br J Cancer ; 107(5): 888-94, 2012 Aug 21.
Artigo em Inglês | MEDLINE | ID: mdl-22814581

RESUMO

BACKGROUND: Gastric fundal atrophy has been hypothesised to increase the risk of oesophageal squamous cell carcinoma (OSCC), but studies have shown inconsistent results. METHODS: We measured serum pepsinogen I (PGI) and pepsinogen II (PGII) among 293 incident cases and 524 matched neighbourhood controls in a high-risk area of Northern Iran. Conditional logistic regression model was used to estimate odds ratios (ORs) and their 95% confidence intervals (CIs). RESULTS: After controlling for age, sex, residence area and other potential confounders, gastric atrophy (defined by a validated criterion, PGI <55 µg dl(-1)) was associated with a two-fold increased risk (OR=2.01, 95% CI: 1.18, 3.45) of OSCC in the absence of nonatrophic pangastritis (defined as PGII <11.8 µg dl(-1)). Stratification by PGII decreased the misclassification errors due to cancer-induced gastritis. Presence of both poor dental health, indicated by higher than median sum of decayed, missing, and filled teeth (DMFT score), and gastric atrophy further increased the risk of OSCC (OR=4.15, 95% CI: 2.04, 8.42) with relative excess risk due to interaction (RERI) of 1.47 (95% CI: -1.15, 4.1). Coexistence of poor oral hygiene habit with gastric atrophy elevated OSCC risk eight times (OR=8.65, 95% CI: 3.65, 20.46) and the additive interaction index was marginally statistically significant (RERI=4.34, 95% CI: -1.07, 9.76). CONCLUSION: Gastric atrophy is a risk factor for OSCC, and poor dental health and oral hygiene habit may act synergistically in increasing the risk.


Assuntos
Carcinoma de Células Escamosas/patologia , Neoplasias Esofágicas/patologia , Gastrite Atrófica/patologia , Higiene Bucal/métodos , Carcinoma de Células Escamosas/sangue , Estudos de Casos e Controles , Neoplasias Esofágicas/sangue , Feminino , Gastrite Atrófica/sangue , Humanos , Masculino , Pessoa de Meia-Idade , Pepsinogênio A/sangue , Pepsinogênio C/sangue , Fatores de Risco , Inquéritos e Questionários
4.
Anaesth Crit Care Pain Med ; 36(1): 43-51, 2017 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-27481690

RESUMO

Triage, a medical term derived from the French word "trier", is the practical process of sorting casualties to rationally allocate limited resources. In combat settings with limited medical resources and long transportation times, triage is challenging since the objectives are to avoid overcrowding medical treatment facilities while saving a maximum of soldiers and to get as many of them back into action as possible. The new face of modern warfare, asymmetric and non-conventional, has led to the integrative evolution of triage into the theatre of operations. This article defines different triage scores and algorithms currently implemented in military settings. The discrepancies associated with these military triage systems are highlighted. The assessment of combat casualty severity requires several scores and each nation adopts different systems for triage on the battlefield with the same aim of quickly identifying those combat casualties requiring lifesaving and damage control resuscitation procedures. Other areas of interest for triage in military settings are discussed, including predicting the need for massive transfusion, haemodynamic parameters and ultrasound exploration.


Assuntos
Medicina Militar/métodos , Triagem/métodos , Algoritmos , Transfusão de Sangue , Humanos , Militares , Guerra
5.
Am J Infect Control ; 45(10): 1160-1164, 2017 Oct 01.
Artigo em Inglês | MEDLINE | ID: mdl-28571981

RESUMO

An outbreak of extended-spectrum ß-lactamase-producing Enterobacter cloacae (ESBL-ECL) occurred in our intensive care unit (ICU) and involved 18 patients (8 infected and 10 colonized). The mean age of patients was 69 years, and all infected patients had underlying medical conditions. Within hours' recognition of the spread of ESBL-ECL, the infection control team requested for staff education, reinforcement of infection control measures, and environmental screening. New transmissions were observed in the institution after weeks of enhanced infection control measures. Microbial swabbing revealed bacterial contamination of some mattresses and syphons with epidemiologic links between environmental, screening, and clinical isolates. This outbreak resulted in the temporary closure of the ICU for complete biocleaning.


Assuntos
Infecção Hospitalar/epidemiologia , Surtos de Doenças , Enterobacter cloacae/enzimologia , Infecções por Enterobacteriaceae/epidemiologia , Microbiologia Ambiental , beta-Lactamases/análise , Adulto , Idoso , Idoso de 80 Anos ou mais , Infecção Hospitalar/microbiologia , Enterobacter cloacae/isolamento & purificação , Infecções por Enterobacteriaceae/microbiologia , Feminino , Humanos , Controle de Infecções/métodos , Unidades de Terapia Intensiva , Masculino , Pessoa de Meia-Idade
6.
Ann Fr Anesth Reanim ; 25(2): 152-7, 2006 Feb.
Artigo em Francês | MEDLINE | ID: mdl-16226861

RESUMO

OBJECTIVE: To improve planning of our operational site by comparing the durations of intervention scheduled by the surgeons and the real durations of occupation of room of intervention, surgical procedure and surgical operation. STUDY DESIGN: Prospective study carried out of December 8, 2003 to February 27, 2004. PATIENTS AND METHODS: Anaesthetic and surgical times of the interventions of visceral and gynaecological surgery were raised. From these data several durations were calculated like the duration of occupation of the room of intervention, surgical procedure and surgical operation. These durations were compared with the durations envisaged by the surgeons to carry out the planning of the operational activity. RESULTS: Two hundred and ten interventions were studied. The analysis showed that there was a significant difference between the duration planned and the real duration of occupation of the room of intervention 45 minutes [5-125] (p<0.0001). The duration planned corresponded with duration of surgical operation, duration which did not take into account anaesthetic induction and surgical installation. CONCLUSIONS: The effectiveness of the planning of an operational site depends on the exactness of the durations scheduled, which are used for its realization. It is significant that all the actors of the operating theatre suite use the durations closest to reality.


Assuntos
Salas Cirúrgicas/organização & administração , Planejamento de Assistência ao Paciente , Procedimentos Cirúrgicos Operatórios , Agendamento de Consultas , Feminino , França , Procedimentos Cirúrgicos em Ginecologia , Humanos , Masculino , Estudos Prospectivos , Procedimentos Cirúrgicos Vasculares
7.
Aliment Pharmacol Ther ; 22(5): 381-5, 2005 Sep 01.
Artigo em Inglês | MEDLINE | ID: mdl-16128675

RESUMO

BACKGROUND: Irritable bowel syndrome has been treated with selective serotonin reuptake inhibitors but there is not enough evidence from controlled trials to prove their effectiveness. AIM: To compare the effects of fluoxetine and placebo in the treatment of pain and constipation-predominant irritable bowel syndrome in a double-blind randomized-controlled trial. METHODS: Forty-four cases meeting Rome II criteria for irritable bowel syndrome with predominance of pain and constipation were included in this study. Organic causes were ruled out by detailed history, physical examination, laboratory tests and colonoscopy. Participants were then randomly assigned to receive either fluoxetine or placebo for 12 weeks. Symptoms addressed by the Rome II criteria were recorded during treatment and 4 weeks after termination of treatment. RESULTS: Fluoxetine was significantly more effective than placebo in decreasing abdominal discomfort, relieving feeling and sense of bloating, increasing frequency of bowel movements and decreasing consistency of stool. Mean number of symptoms per patient decreased from 4.6 to 0.7 in the fluoxetine group vs. 4.5 to 2.9 in controls (P < 0.001). CONCLUSIONS: Fluoxetine is an effective and well-tolerated short-term treatment for pain and constipation-predominant irritable bowel syndrome.


Assuntos
Dor Abdominal/prevenção & controle , Constipação Intestinal/tratamento farmacológico , Fluoxetina/uso terapêutico , Síndrome do Intestino Irritável/tratamento farmacológico , Inibidores Seletivos de Recaptação de Serotonina/uso terapêutico , Adulto , Método Duplo-Cego , Feminino , Humanos , Masculino , Resultado do Tratamento
8.
Arterioscler Thromb Vasc Biol ; 21(6): 991-6, 2001 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-11397709

RESUMO

Transgenic and knockout mice are widely used as models for atherogenesis studies. While developing a Helicobacter infection model in LDL receptor-negative (LDLR(-/-)) mice, we noticed that mice fed a high-fat, high-cholesterol diet often contracted gastritis independent of infection. To further investigate this finding, we studied 27 male and 18 female LDLR(-/-) mice fed high-fat, 1% or 1.25% cholesterol diets for 3 to 4 months. The extent of atherosclerosis was morphometrically analyzed in the whole aorta, and the degree of gastric inflammation was scored histologically in hematoxylin-eosin-stained stomach sections. The autoantibody titers to epitopes of oxidized LDL were also measured. Mice fed high-fat, high-cholesterol diets had a significantly higher incidence of gastritis than mice fed normal chow, 62% versus 5%, respectively (P<0.0001). This effect was specific for LDLR(-/-) mice, because no difference in gastritis was found in wild-type mice fed either diet. Animals with gastritis showed slightly more atherosclerosis than animals without gastritis: 16.3+/-6.4% versus 12.8+/-3.4% in males and 9.4+/-3.5% versus 6.5+/-3.3% in females. Cholesterol-fed mice also had significantly higher IgG autoantibody titers against modified LDL than normal chow-fed animals, but no difference was seen between the gastritis and nongastritis groups. We conclude that the standard high-fat, high-cholesterol diet commonly used in many murine models to induce atherosclerosis increased the incidence of gastritis significantly in LDLR(-/-) mice.


Assuntos
Colesterol/administração & dosagem , Dieta/efeitos adversos , Gorduras/administração & dosagem , Gastrite/etiologia , Receptores de LDL/genética , Animais , Arteriosclerose/patologia , Autoanticorpos/imunologia , Colesterol/sangue , Feminino , Gastrite/patologia , Incidência , Lipídeos/sangue , Lipoproteínas LDL/imunologia , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Camundongos Knockout , Estômago/patologia , Aumento de Peso
9.
Exp Gerontol ; 34(4): 527-37, 1999 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-10817808

RESUMO

The development of extensive atherosclerosis of major arteries of the heart, brain, and lower extremities is a particularly frequent problem in elderly individuals and is responsible for the majority of the cardiovascular morbidity and mortality in this population. Although the frequency and severity of this problem is well recognized, there has been relatively little investigation of the effects of aging on the development of atherosclerosis. Work by a number of investigators over the last 10-15 years has demonstrated that modifications of lipoproteins, resulting from oxidative stress, glycoxidation, formation of AGE, or other processes may play an important role in atherosclerosis. As described in this review, the aging process may enhance lipoprotein modification and atherosclerosis in several ways. Conditions such as hypertension, diabetes, and menopause all increase in frequency with advancing age and may contribute both directly and indirectly to lipoprotein modification and vascular injury.Additionally, in some studies of older animals and humans, there seems to be evidence for greater in vivo oxidative stress. Whether this is a specific consequence of aging and associated medical conditions, or related to differences in dietary fatty acid or antioxidant content or other lifestyle differences is currently unknown. One important consequence of this may be enhanced susceptibility of lipoproteins to oxidation. Additional study of lipoprotein modifications associated with aging is clearly needed, and may provide new insight and solutions to the common problem of atherosclerosis in the elderly.


Assuntos
Envelhecimento/metabolismo , Arteriosclerose/etiologia , Lipoproteínas/metabolismo , Animais , Humanos , Oxirredução , Estresse Oxidativo
10.
Aliment Pharmacol Ther ; 19(1): 89-93, 2004 Jan 01.
Artigo em Inglês | MEDLINE | ID: mdl-14687170

RESUMO

BACKGROUND: Furazolidone-based regimens for the eradication of Helicobacter pylori are low cost and effective. Unfortunately, the usual dose of furazolidone is not tolerable in many patients. Lower doses of furazolidone are expected to cause fewer adverse effects. AIM: To investigate the efficacy of low-dose furazolidone in the eradication of H. pylori. METHODS: One hundred and fifty patients with duodenal ulcer and H. pylori infection were randomly assigned to one of three treatment groups: omeprazole 20 mg b.d., amoxicillin 1000 mg b.d. and furazolidone 100 mg b.d. for 14 days (OAF); omeprazole 20 mg b.d., amoxicillin 1000 mg b.d., furazolidone 100 mg b.d. and bismuth subcitrate 240 mg b.d. for 14 days (OABF1); or omeprazole 20 mg b.d., amoxicillin 1000 mg b.d., furazolidone 200 mg b.d. and bismuth subcitrate 240 mg b.d. for 14 days (OABF2). RESULTS: Of the 150 patients, 145 completed treatment. The intention-to-treat and per protocol eradication rates were 54% (27/50), 72% (36/50) and 92% (46/50) for the OAF, OABF1 and OABF2 groups, respectively. The OAF and OABF1 groups showed significantly lower eradication rates than the OABF2 group (P<0.001 and P<0.01, respectively). CONCLUSIONS: Triple and quadruple furazolidone-based H. pylori eradication regimens do not yield acceptable success rates when a low dose of furazolidone (100 mg b.d.) is used.


Assuntos
Anti-Infecciosos/administração & dosagem , Furazolidona/administração & dosagem , Infecções por Helicobacter/tratamento farmacológico , Helicobacter pylori , Adulto , Amoxicilina/administração & dosagem , Antibacterianos/administração & dosagem , Antiulcerosos/administração & dosagem , Quimioterapia Combinada , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Omeprazol/administração & dosagem , Compostos Organometálicos/administração & dosagem , Resultado do Tratamento
11.
Aliment Pharmacol Ther ; 15(3): 411-6, 2001 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-11207517

RESUMO

BACKGROUND: The eradication of Helicobacter pylori plays a pivotal role in the treatment of peptic ulcer disease. Metronidazole resistance, common in Iran, is claimed to be a major reason for the failure of metronidazole-containing regimens. Both clarithromycin and furazolidone are potential alternatives for metronidazole. AIM: To assess and compare the effectiveness of clarithromycin- and furazolidone-based regimens in eradicating H. pylori in a population with a high metronidazole resistance rate. METHODS: Patients with proven duodenal ulcer and H. pylori infection were randomly assigned to one of two groups. The patients received 2 weeks of omeprazole 20 mg b.d., amoxicillin 1000 mg b.d, bismuth subcitrate 240 mg b.d. and either clarithromycin 500 mg b.d. (the OABC group) or furazolidone 200 mg b.d. (the OABF group). RESULTS: A total of 118 patients were randomized, 55 in the OABC group and 63 in the OABF group. The intention-to-treat eradication rate was 84% and 85% for the OABF and OABC groups, respectively. The per protocol eradication rates were 90% for both groups. CONCLUSIONS: OABC and OABF are both effective in eradicating H. pylori in areas where metronidazole resistance is a problem. OABF is a good alternative in the face of growing resistance to clarithromycin in developed countries, and is attractive for developing countries where clarithromycin is not readily available.


Assuntos
Amoxicilina/farmacologia , Antibacterianos/farmacologia , Anti-Infecciosos Locais/farmacologia , Antiulcerosos/farmacologia , Claritromicina/farmacologia , Úlcera Duodenal/microbiologia , Furazolidona/farmacologia , Infecções por Helicobacter/tratamento farmacológico , Metronidazol/farmacologia , Omeprazol/farmacologia , Compostos Organometálicos/farmacologia , Penicilinas/farmacologia , Adulto , Amoxicilina/uso terapêutico , Anti-Infecciosos Locais/uso terapêutico , Antiulcerosos/uso terapêutico , Claritromicina/uso terapêutico , Resistência a Medicamentos , Quimioterapia Combinada , Dispepsia , Feminino , Furazolidona/uso terapêutico , Infecções por Helicobacter/patologia , Helicobacter pylori/efeitos dos fármacos , Helicobacter pylori/patogenicidade , Humanos , Incidência , Irã (Geográfico)/epidemiologia , Masculino , Pessoa de Meia-Idade , Omeprazol/uso terapêutico , Compostos Organometálicos/uso terapêutico , Penicilinas/uso terapêutico , Resultado do Tratamento
12.
Aliment Pharmacol Ther ; 18(2): 231-5, 2003 Jul 15.
Artigo em Inglês | MEDLINE | ID: mdl-12869084

RESUMO

BACKGROUND: Coeliac disease may easily mimic symptoms which are parts of the criteria used for diagnosing irritable bowel syndrome. AIM: To find the frequency of coeliac disease among patients diagnosed as irritable bowel syndrome. METHODS: During a period of one year, irritable bowel syndrome patients referred to a university clinic in Tehran were studied. For each patient, an asymptomatic sibling was enrolled as control. Serological tests for coeliac disease were performed in all patients and controls. If positive, duodenal biopsy was performed to confirm the diagnosis. Patients subsequently diagnosed as coeliac disease were placed on a gluten free diet and re-evaluated after 6 months. RESULTS: One hundred and five cases of irritable bowel syndrome and 105 controls were enrolled. Coeliac disease was diagnosed in 12 of the irritable bowel syndrome patients and none of the controls. Eleven coeliac disease patients adhered to a gluten free diet. After 6 months, all 11 patients had significant improvement in symptoms and three were totally asymptomatic. Six allowed repeated endoscopy after 6 months of gluten free diet, of which five showed improvement in histological findings. CONCLUSIONS: Coeliac disease is a common finding among patients labelled as irritable bowel syndrome. In this sub-group, a gluten free diet may lead to a significant improvement in symptoms. Routine testing for coeliac disease may be indicated in all patients being evaluated for irritable bowel syndrome.


Assuntos
Doença Celíaca/complicações , Doenças Funcionais do Colo/etiologia , Adulto , Constipação Intestinal/etiologia , Diarreia/etiologia , Feminino , Humanos , Masculino
13.
Aliment Pharmacol Ther ; 17(2): 211-6, 2003 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-12534405

RESUMO

BACKGROUND: Endoscopic therapies and continuous intravenous omeprazole can decrease the morbidity and duration of hospital stay of patients with high-risk peptic ulcer. AIM: To evaluate the role of oral omeprazole in high-risk bleeders. METHODS: After injection therapy of 160 patients with high-risk peptic ulcer, 80 received oral omeprazole and 80 received placebo, and all were followed up. RESULTS: One hundred and forty-nine patients (71 omeprazole and 78 placebo) completed the study. Eleven patients were excluded from the study. Thirty-seven (25%) patients had gastric ulcer and 112 (75%) had duodenal ulcer. Fifty-seven (38%) ulcers showed visible vessels, 80 (54%) showed oozing of blood and 12 (8%) showed a spurting artery. Only one patient died (placebo group). The mean hospital stays were 62.8 +/- 28.6 h and 75 +/- 39 h in the omeprazole and placebo groups, respectively (P = 0.032). The mean amounts of blood transfused were 1.13 +/- 1.36 and 1.68 +/- 1.68 bags in the omeprazole and placebo groups, respectively (P = 0.029). The re-bleeding rate was lower in the omeprazole group than in the placebo group (12 vs. 26, respectively; P = 0.022). CONCLUSION: Oral omeprazole is effective in decreasing the hospital stay, re-bleeding rate and the need for blood transfusion in high-risk ulcer bleeders treated with endoscopic injection therapy.


Assuntos
Antiulcerosos/administração & dosagem , Úlcera Duodenal/tratamento farmacológico , Omeprazol/administração & dosagem , Úlcera Péptica Hemorrágica/tratamento farmacológico , Úlcera Gástrica/tratamento farmacológico , Administração Oral , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Método Duplo-Cego , Endoscopia Gastrointestinal/métodos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Prevenção Secundária , Resultado do Tratamento
14.
J Clin Pathol ; 57(1): 37-42, 2004 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-14693833

RESUMO

BACKGROUND/AIMS: Ardabil Province, in northwestern Iran, has the highest rate of gastric (predominantly cardia) adenocarcinoma in Iran. This study aimed to investigate the feasibility of endoscopic screening and to look for associated Helicobacter pylori infection and gastric precancerous lesions. METHODS: One thousand one hundred and five adult volunteers, residents of Ardabil and Meshkinshahr, districts, 40 years old and above were selected and invited by a simple random household canvass in rural and urban locations. Informed consents were obtained and upper gastrointestinal video endoscopy was performed to biopsy all visible lesions and standard sites in the antrum, corpus, and cardia. RESULTS: One thousand and eleven of the invited individuals agreed to participate, including 494 men and 517 women, with a mean (SD) age of 53.32 (10.39) years. Endoscopy was well tolerated by all subjects; 96.7% of antral and 80.7% of cardia mucosal biopsies were satisfactory. The urease test or histology for H pylori was positive in at least 89.2% of subjects. Histological evidence of mucosal atrophy was seen in 39.3% of antral and 21.9% of cardia samples. Chronic gastritis with or without activity, reactive atypia of glandular epithelium, intestinal metaplasia, dysplasia, and cancer were found in 95.1%, 38.0%, 8.7%, 0.2%, and 0.3% of antral and 85.3%, 22.9%, 3.8%, 0.3%, and 0.1% of cardiac biopsies, respectively. CONCLUSION: Endoscopic screening for upper gastrointestinal diseases was feasible and well tolerated in Ardabil, Iran. Most subjects showed H pylori infection. Atrophic gastritis, reactive atypia, and intestinal metaplasia were common in antrum, corpus, and cardia subsites.


Assuntos
Adenocarcinoma/epidemiologia , Lesões Pré-Cancerosas/epidemiologia , Neoplasias Gástricas/epidemiologia , Adenocarcinoma/diagnóstico , Adulto , Idoso , Idoso de 80 Anos ou mais , Dieta/estatística & dados numéricos , Endoscopia Gastrointestinal , Estudos de Viabilidade , Feminino , Gastrite/diagnóstico , Gastrite/epidemiologia , Infecções por Helicobacter/diagnóstico , Infecções por Helicobacter/epidemiologia , Helicobacter pylori , Humanos , Incidência , Irã (Geográfico)/epidemiologia , Masculino , Pessoa de Meia-Idade , Lesões Pré-Cancerosas/diagnóstico , Prevalência , Neoplasias Gástricas/diagnóstico
15.
J Gerontol A Biol Sci Med Sci ; 55(2): B85-94, 2000 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-10737683

RESUMO

Although age is a strong risk factor for atherosclerosis, it is unclear whether age may directly influence the process of atherogenesis. We, therefore, performed several studies in young (2-4 months old), mature (10-14 months old), and old (20-22 months old) mice to determine if the rate of aortic lesion formation increases with age, and whether this is related to increases in oxidative stress or vascular cell adhesion molecule (VCAM-1) expression in the aortic wall. In chow-fed low-density lipoprotein receptor-deficient (LDLR-/-) mice, plasma total cholesterol levels increased with age (250 +/- 52 mg/dl in young, 276 +/- 58 in mature, and 314 +/- 101 mg/dl in old mice). In contrast, the extent of atherosclerosis rose more rapidly, increasing from 3.6 +/- 2.7% of the aortic surface in mature mice to 18.2 +/- 8% in old mice. Plasma and tissue levels of antioxidant enzymes and molecules, as well as plasma thiobarbituric acid reactive substances and low-density lipoprotein susceptibility to oxidation, did not change with age. In a second study, VCAM-1 expression in the aortic arch and the extent of atherosclerosis in the aortic origin were significantly greater in old LDLR-/- mice than in young LDLR-/- mice. Additionally, after 1 month of a high-fat diet, which induced equally elevated plasma cholesterol levels in both young and old LDLR-/- mice, VCAM-1 expression and aortic lesion formation were still greater in old mice. The extent of atherosclerosis correlated well (r = .65,p <.01) with the expression of VCAM-1 in the aortic origin. In a final study, we measured VCAM-1 expression and atherosclerosis in young, mature, and old C57BL/6 mice, which have low plasma cholesterol levels (< or =100 mg/dl) when fed a standard chow diet. Although plasma cholesterol levels did not increase with age, old C57BL/6 mice had significantly more VCAM-1 expression in the aortic arch than did young mice. However, no lesions were observed in the aortic origin in either group. These data demonstrate that plasma cholesterol levels and VCAM-1 expression increase with age and suggest that this may contribute to the increased rate of atherosclerotic lesion formation in LDLR-/- mice. Importantly, the age-dependent increase in VCAM-1 expression does not appear to be related to plasma cholesterol levels. This study also suggests that in the absence of elevated plasma cholesterol, an increased expression of VCAM-1 alone is not sufficient for lesion formation.


Assuntos
Envelhecimento/metabolismo , Aorta/metabolismo , Doenças da Aorta/etiologia , Arteriosclerose/etiologia , Molécula 1 de Adesão de Célula Vascular/análise , Envelhecimento/genética , Análise de Variância , Animais , Catalase/análise , Catalase/sangue , Colesterol/sangue , Gorduras na Dieta/administração & dosagem , Modelos Animais de Doenças , Regulação da Expressão Gênica , Glutationa Peroxidase/análise , Glutationa Peroxidase/sangue , Lipoproteínas LDL/sangue , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Camundongos Endogâmicos , Oxirredução , Estresse Oxidativo/fisiologia , Receptores de LDL/genética , Fatores de Risco , Superóxido Dismutase/análise , Superóxido Dismutase/sangue , Tiobarbitúricos/sangue , Molécula 1 de Adesão de Célula Vascular/genética
16.
Carbohydr Res ; 193: 105-13, 1989 Oct 31.
Artigo em Inglês | MEDLINE | ID: mdl-2575452

RESUMO

The condensation of per(trimethyl)silylbarbital and -phenobarbital with 1,2,3,4,6-penta-O-acetyl-beta-D-glucopyranose in the presence of stannic chloride in dichloroethane gave moderate yields of the beta-coupled barbiturate N-D-glucopyranosyl derivatives. Reaction of metharbital and mephobarbital under the same conditions was unsuccessful. The homologous N-methylglucosides were prepared by reaction of the barbital and phenobarbital N-glucosyl derivatives with diazomethane. The diastereomers of the phenobarbital and mephobarbital derivatives were resolved by use of C-18 reverse-phase h.p.l.c. 1H- and 13C-n.m.r. spectroscopy, and thermospray 1.c.-m.s. proved to be the most useful methods for characterizing the barbiturate glucosides.


Assuntos
Barbitúricos/síntese química , Barbital/análogos & derivados , Barbital/síntese química , Barbitúricos/análogos & derivados , Cromatografia Líquida de Alta Pressão , Dissacarídeos/síntese química , Espectroscopia de Ressonância Magnética , Mefobarbital/análogos & derivados , Mefobarbital/síntese química , Fenobarbital/análogos & derivados , Fenobarbital/síntese química
17.
Ann Biol Clin (Paris) ; 61(3): 332-6, 2003.
Artigo em Francês | MEDLINE | ID: mdl-12805012

RESUMO

We report a case of blackwater fever with brown plasma due to the presence of methemalbumin. The discovery of plasma with this color is a rare event at the laboratory. This compound appears during intravascular hemolysis or hemorrhagic pancreatitis when the ability of haptoglobin and hemopexin to bind free hemoglobin has been exceeded. In these cases some of heme is oxidized to hematin and taken up by serum albumin to form an albumin-hematin complex called methemalbumin. The major clinical problem is to evoke the diagnosis of methemalbuminemia and not confuse with methemoglobinemia. In our case, methemalbumin was detected and quantified using a scanning spectrophotometer. Its diagnostic and clinicals consequences are discussed.


Assuntos
Anemia Hemolítica/sangue , Anemia Hemolítica/etiologia , Febre Hemoglobinúrica/sangue , Febre Hemoglobinúrica/complicações , Metemalbumina/metabolismo , Anti-Inflamatórios/uso terapêutico , Febre Hemoglobinúrica/diagnóstico , Febre Hemoglobinúrica/terapia , Diagnóstico Diferencial , Diuréticos/uso terapêutico , Furosemida/uso terapêutico , Hematócrito , Heme/metabolismo , Hemoglobinas/análise , Humanos , Masculino , Metemalbumina/análise , Metemalbumina/química , Pessoa de Meia-Idade , Plasma/química , Diálise Renal , Albumina Sérica/metabolismo , Espectrofotometria , Esteroides , Trombocitopenia/classificação , Trombocitopenia/etiologia
18.
Ann Fr Anesth Reanim ; 21(7): 596-9, 2002 Jul.
Artigo em Francês | MEDLINE | ID: mdl-12192693

RESUMO

The sitting position in neurosurgery may lead to complications such as air embolism and neurological complications. We report the case of a 16-year-old male who suffered from post-operation paraplegia after surgery for Arnold Chiari disease. This patient had several risk factors and serious morphological spinal abnormalities. We propose to include monitoring of somatosensory evoked potentials (SSEP) during this surgery in order to detect this type of devastating incident.


Assuntos
Procedimentos Neurocirúrgicos/efeitos adversos , Paraplegia/etiologia , Complicações Pós-Operatórias/etiologia , Postura/fisiologia , Adolescente , Malformação de Arnold-Chiari/cirurgia , Potenciais Somatossensoriais Evocados/fisiologia , Humanos , Masculino , Monitorização Intraoperatória , Coluna Vertebral/anormalidades
19.
Ann Fr Anesth Reanim ; 23(5): 517-21, 2004 May.
Artigo em Francês | MEDLINE | ID: mdl-15158246

RESUMO

Amiodarone can induce severe hyperthyroidism that justifies its withdrawal and initiation of antithyroid drugs. Impossibility to stop amiodarone, failure to control hyperthyroidism and unfavourable evolution can lead to thyroidectomy. Cardiac manifestations, persistence of hyperthyroidism and interactions between amiodarone and anaesthetic or haemodynamic drugs may contraindicate anaesthesia. We report nine consecutive cases of amiodarone-associated hyperthyroidism that prompted us to perform thyroidectomy under general anaesthesia. The features and anaesthetic data of patients were noted. The antithyroid medical treatment failed in all patients. After thyroidectomy, evolution was favourable in all nine cases, without any intra or postoperative complication, in spite of the extent of hyperthyroidism and the severity of the associated cardiac problems. Despite potential high risks, thyroidectomy for amiodarone-induced hyperthyroidism does not seem to increase morbidity or mortality and allows a quick return to euthyroidism and reintroduction of amiodarone.


Assuntos
Amiodarona/efeitos adversos , Anestesia Geral/efeitos adversos , Antiarrítmicos/efeitos adversos , Hipertireoidismo/induzido quimicamente , Hipertireoidismo/cirurgia , Tireoidectomia , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Complicações Pós-Operatórias/epidemiologia , Hormônios Tireóideos/sangue
20.
Ann Fr Anesth Reanim ; 21(4): 295-8, 2002 Apr.
Artigo em Francês | MEDLINE | ID: mdl-12033097

RESUMO

We report the case of a 51-year-old man with an allergy to amoxicillin/acid clavulanique who presented with Streptococcus pneumoniae meningitis. Initial treatment consisted of an association of antibiotics including ceftriaxone. Six days after treatment was initiated the patient developed skin reaction and the diagnosis of allergy to ceftriaxone was established by the dosage of specific IgE. Typically Streptococcus pneumoniae meningitis is treated with vancomycin and a third-generation cephalosporin. This association had to be modified because cross allergy to cephalosporins could have developed in this patient who had previously reacted to penicillins.


Assuntos
Ceftriaxona/efeitos adversos , Cefalosporinas/efeitos adversos , Meningites Bacterianas/tratamento farmacológico , Pneumonia Pneumocócica/tratamento farmacológico , Humanos , Masculino , Pessoa de Meia-Idade , Streptococcus pneumoniae
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