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Small bowel capsule endoscopy (SBCE) is a convenient and minimally invasive method widely used to evaluate the small intestine. However, especially in the distal ileum, visualization of the intestinal mucosa is frequently hampered by the remaining intestinal contents, making it difficult to detect critical lesions. Although several studies have reported on the efficacy of bowel preparation before SBCE, no standardized protocol has been established. Herein, we determined the optimal preparation method for better visualization of the distal ileum using SBCE. We retrospectively analyzed 259 consecutive patients who had undergone SBCE between July 2009 and December 2019, divided into three groups: Group A (no preparation except overnight fasting), Group B (ingestion of 1-2 L polyethylene glycol 4 h before colonoscopy after overnight fasting and performing SBCE immediately after colonoscopy), and Group C (ingestion of 0.9 L magnesium citrate [MC] before SBCE after overnight fasting). The visibility of the intestinal mucosa in the first 10 min and at the last 10 min during the period of observation of the distal ileum was examined using a scoring system and compared. The visibility of the images captured by SBCE was assessed based on the scoring of the degree of bile/chyme staining, residual fluid and debris, brightness, bubble reduction, and visualized mucosa. The status of intestinal collapse was also assessed. In the first 10 min of observation of the distal ileum, no significant differences were detected among the groups. In the last 10 min, significantly better images were acquired in Group C in terms of bile/chyme staining, brightness, bubble reduction, and visualized mucosa. Bowel preparation using a low-dose MC solution 2 h before SBCE provided significantly higher-quality images of the distal ileum. Further optimization, such as the timing of initiating the preparation, is necessary to determine the optimal regimen for bowel preparation prior to SBCE.
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INTRODUCTION: Smoking is the leading cause of chronic obstructive pulmonary disease (COPD), and smoking cessation is the most effective treatment for patients with COPD. However, few studies have investigated the continuation/cessation of smoking and heated tobacco products (HTP) in patients with COPD. The objective of this study was to examine the characteristics of patients with COPD, those who are current smokers and those who switched from cigarettes to HTP, and to examine the reason for the continuation or cessation of smoking. METHODS: This multicenter, cross-sectional study included 411 outpatients with COPD. Data for this study were part of a study conducted for a comprehensive evaluation of the smoking status and clinical factors in patients with COPD and their families. RESULTS: Logistic regression analysis revealed that a younger age, longer duration of smoking, fewer daily cigarettes, and lower modified Medical Research Council (mMRC) dyspnea score, and a lower Simplified Nutritional Appetite Questionnaire (SNAQ) score for appetite, were characteristics of current smokers (age OR=0.94; duration of smoking OR=1.07; number of cigarettes per day OR=0.94; mMRC OR=0.68; SNAQ OR=0.83; p<0.05). The logistic regression analysis model showed that a younger age and higher education level were associated with the use of HTP (age OR=0.83; higher education level OR=4.63; p<0.05). Many of the current smokers displayed smoking behaviors that are not guaranteed to be safe, such as reducing smoking or switching to lighter cigarettes or HTP. CONCLUSIONS: Patients with COPD who continue smoking tended to have low appetite as well as smoking behaviors that are not guaranteed to be safe. Physicians should provide appropriate guidance to these patients on smoking cessation.
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Background: Although there are papers reporting on the accuracy of colon capsule endoscopy (CCE) compared with colonoscopy (CS), there are few reports on the detection rates of significant lesions by endoscopy nurses. We previously reported no significant difference in the detection rates for small bowel capsule endoscopy (SBCE) images among two well-trained physicians and one expert nurse. Objective: To evaluate the reading time and detection rate of the significant lesions of CCE images among novice and trained expert endoscopy nurses and novice physicians. Methods: CCE videos of 20 consecutive patients who performed both CCE and CS with clinically significant localized lesions were selected. Two trained expert endoscopy nurses, untrained two novice physicians, and novice three endoscopy nurses reviewed CCE videos. The detection rate of the lesions and reading time were compared among the three groups and were evaluated by comparison between the first and the second 10 videos. Results: The median reading time was the shortest (19 min) in the trained expert endoscopy nurses and the longest (45 min) in the novice nurses. The number of thumbnails tended to be more in the trained expert endoscopy nurses in the first 10-video reading. Although the detection rates of small polyps (<5 mm) were significantly lower (46.5%, p=0.025) in the novice nurses compared to the others, they were improved (35.2% to 63.5%, p=0.015) in the second 10 videos. The detection rates of tumor lesions by either one of two trained expert endoscopy nurses were higher compared to those by each novice physician. Conclusions: The trained expert endoscopy nurses for CCE reading can reduce physician's time and improve the diagnostic yield.
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Endoscopia por Cápsula , Enfermeiras e Enfermeiros , Colo , Colonoscopia , Humanos , Intestino DelgadoRESUMO
BACKGROUND AND AIM: Although oral mesalamine is the first-choice drug for treating mild-to-moderate ulcerative colitis (UC), some patients show symptoms of intolerance, including exacerbation of diarrhea and abdominal pain. The present study clarified the current state and clinical courses of patients with mesalamine intolerance. METHODS: Patients who were diagnosed with UC and administered oral mesalamine at eight hospitals in Japan with a follow-up period exceeding 1 year were analyzed. RESULTS: Sixty-seven (11%) of 633 patients showed intolerance to at least one formulation of oral mesalamine. The frequency of mesalamine intolerance has increased in recent years, rising from 5.3% in 2007-2010 to 9.1% in 2011-2013 and 16.2% in 2014-2016. The most common complications were the exacerbation of diarrhea (n = 29), a fever (n = 25), and abdominal pain (n = 22). Readministration of mesalamine/sulfasalazine was attempted in 43 patients, mostly with other types of formulation of mesalamine, and more than half of these patients proved to be tolerant. The risk factors for mesalamine intolerance were female gender (odds ratio [OR] = 1.83; 95% confidence interval [CI], 1.08-3.12), age < 60 years old (OR = 2.82; CI, 1.19-8.33), and pancolitis (OR = 2.09; 95% CI, 1.23-3.60). There were no significant differences in the use of anti-tumor necrosis factor-α agents, colectomy, or steroid-free remission at the last visit between patients with and without mesalamine intolerance. CONCLUSIONS: Mesalamine intolerance is not rare, and its frequency has been increasing recently. The prognosis of patients with mesalamine intolerance did not differ significantly from that of those without intolerance.
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Colite Ulcerativa/tratamento farmacológico , Mesalamina/administração & dosagem , Mesalamina/efeitos adversos , Dor Abdominal/etiologia , Administração Oral , Adulto , Diarreia/etiologia , Progressão da Doença , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Prognóstico , Estudos Retrospectivos , Fatores de Risco , Índice de Gravidade de Doença , Fatores Sexuais , Sulfassalazina/administração & dosagem , Sulfassalazina/efeitos adversos , Fatores de TempoRESUMO
BACKGROUND: Viral infection is the main cause of asthma and COPD (chronic obstructive pulmonary disease) exacerbation and accumulate inflammatory cells to airway tissue. We have reported poly I:C, a mimic product of the virus and ligand of toll-like receptor 3 (TLR3), induced inflammatory chemokines from airway epithelial cells and found prior incubation with corticosteroids diminishes the effect of TLR3 activation. In clinical practice, mild asthma is recommended as-needed budesonide (BUD) when symptoms occur following a viral infection, etc. However, many questions still surround BUD's usefulness if taken after a virus has already infected airway tissue. OBJECTIVE: The aim of this study was to investigate the inhibitory effects of BUD on inflammatory cytokines induced by viral infection. Methods: Normal human bronchial epithelial (NHBE) cells were stimulated with poly I:C or infected with human rhinovirus-16 (HRV16) and BUD was added after the initial stimulation. Expression of both thymic stromal lymphopoietin (TSLP) and CCL26/eotaxin-3 was quantified by real-time RT-PCR and enzyme-linked immunosorbent assay (ELISA), respectively. Knockdown study was performed. Results: Pre-or post-incubation with BUD inhibited both poly I:C- and HRV16-induced mRNAs and proteins of both thymic stromal lymphopoietin (TSLP) and CCL26 with significance. Knockdown of the glucocorticoid receptor diminished these effects of BUD. Under the same conditions of BUD's experiment, post-incubation with neither fluticasone propionate nor dexamethasone suppressed expression of both TSLP and CCL26, which induced by poly I:C. CONCLUSION: Post-addition of BUD inhibited the virus-induced TSLP and CCL26 from the airway epithelial cells. These results suggest that inhalation of BUD after viral infection has beneficial effects on asthma. CONCLUSION: Late addition of BUD may benefit among patient with viral infection and type 2 allergic airway disease such as asthma.
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Broncodilatadores/farmacologia , Budesonida/farmacologia , Citocinas/efeitos dos fármacos , Infecções por Picornaviridae/tratamento farmacológico , Infecções Respiratórias/tratamento farmacológico , Rhinovirus , Técnicas de Cultura de Células , Quimiocina CCL26/efeitos dos fármacos , Células Epiteliais/efeitos dos fármacos , Células Epiteliais/virologia , Humanos , Infecções por Picornaviridae/virologia , Mucosa Respiratória/citologia , Mucosa Respiratória/virologia , Infecções Respiratórias/virologiaRESUMO
Rectal varices are ectopic varices that occur in patients with portal hypertension and cause abrupt gastrointestinal bleeding. Endoscopic variceal ligation is a minimally invasive treatment used for patients with bleeding from rectal varices. Endoscopic treatment of colorectal tumors accompanied by rectal varices has been rarely reported. It is very important to control bleeding during treatment. The patient was a 76-year-old man who had a chief complaint of bloody stools. A flat-elevated-type neoplastic lesion measuring about 20 mm was found above the rectal varices. After performing endoscopic variceal ligation for rectal varices around the lesion, the lesion was resected en bloc by endoscopic submucosal dissection. Bleeding was controlled during the procedure; the patient was discharged 7 days after the endoscopic treatment, and there was no postoperative bleeding. Colonoscopy performed 90 days after the procedure showed scar formation in the wound area and no remnant lesion. The implementation of preoperative endoscopic variceal ligation enabled us to control bleeding during endoscopic treatment in a case of early colorectal cancer accompanied by rectal varices.
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Ressecção Endoscópica de Mucosa/métodos , Hemorragia Gastrointestinal/cirurgia , Técnicas Hemostáticas , Neoplasias Retais/cirurgia , Reto/irrigação sanguínea , Varizes/cirurgia , Idoso , Hemorragia Gastrointestinal/etiologia , Humanos , Ligadura/métodos , Masculino , Neoplasias Retais/complicações , Neoplasias Retais/diagnóstico , Varizes/etiologiaRESUMO
BACKGROUND: The prognostic factors and the efficacy of first-line chemotherapy remain unclear in patients with advanced thymic carcinoma. MATERIALS AND METHODS: We conducted a multi-institutional retrospective study named NEJ023 for patients with advanced thymic carcinoma. All patients without any indication of curative treatment were treated with chemotherapy from 1995 to 2014 at 40 institutions of the North East Japan Study Group. RESULTS: A total of 286 patients with advanced thymic carcinoma were analyzed. First-line chemotherapy included platinum-based doublets in 62.2% of the patients, monotherapy in 3.5%, and other multidrug chemotherapy (e.g., cisplatin, doxorubicin, vincristine, and cyclophosphamide [ADOC]) in 34.3%. The median follow-up period was 55.5 months, and the median overall survival (OS) from the start of first-line chemotherapy was 30.7 months (95% confidence interval, 25.9-35.9 months). There was no significant difference in OS among different first-line chemotherapy regimens (e.g., between carboplatin/paclitaxel and ADOC, median OS: 27.8 vs. 29.9 months). Masaoka-Koga stage IVa and volume reduction surgery were favorable prognostic factors for OS in the multivariate analysis using the Cox proportional hazards model. CONCLUSION: The efficacy of each first-line chemotherapy regimen for advanced thymic carcinoma did not vary significantly. Our results might support the adequacy of the use of carboplatin/paclitaxel as first-line chemotherapy for these patients. IMPLICATIONS FOR PRACTICE: Because of its rarity, there is limited information about prognostic factors and efficacy of chemotherapy in patients with advanced thymic carcinoma. This is the largest data set for those patients treated with chemotherapy. This study suggests there is no significant difference in efficacy between carboplatin/paclitaxel and cisplatin/doxorubicin/vincristine/cyclophosphamide for advanced thymic carcinoma. This result can support the adequacy of the selection of platinum doublets as treatment for those patients, rather than anthracycline-based multidrug regimen.
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Timoma/tratamento farmacológico , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Prognóstico , Estudos Retrospectivos , Timoma/patologia , Adulto JovemRESUMO
A 72-year-old man presented with anorexia and 15-kg weight loss over 3 years. Endoscopy revealed yellow, shaggy mucosa alternating with erythematous, eroded mucosa in the duodenum. Biopsy specimens showed massive infiltration of periodic acid-Schiff-positive macrophages in the lamina propria, consistent with Whipple's disease. The patient was treated with intravenous ceftriaxone for four weeks, followed by oral trimethoprim-sulfamethoxazole. His condition improved, and he gradually gained weight. Although the endoscopic findings improved with continuous trimethoprim-sulfamethoxazole administration, macrophage infiltration of the duodenal mucosa persisted. However, the patient has been symptom-free for eight years.
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Antibacterianos/uso terapêutico , Ceftriaxona/uso terapêutico , Endoscopia/métodos , Doença de Whipple/diagnóstico por imagem , Doença de Whipple/tratamento farmacológico , Idoso , Duodeno/patologia , Seguimentos , Humanos , Mucosa Intestinal/patologia , Macrófagos/metabolismo , Masculino , Combinação Trimetoprima e Sulfametoxazol/uso terapêutico , Doença de Whipple/diagnósticoRESUMO
Progress in double-balloon endoscopy (DBE) has allowed for the diagnosis and treatment of disease in the postoperative bowel. For example, a short DBE, which has a 2.8 mm working channel and 152 cm working length, is useful for endoscopic retrograde cholangiopancreatography in bowel disease patients. However, afferent loop and Roux-limb obstruction, though rare, is caused by postoperative recurrence of biliary tract cancer with intractable complications. Most of the clinical findings involving these complications are relatively nonspecific and include abdominal pain, nausea, vomiting, fever, and obstructive jaundice. Treatments by surgery, percutaneous transhepatic biliary drainage, percutaneous enteral stent insertion, and endoscopic therapy have been reported. The general conditions of patients with these complications are poor due to cancer progression; therefore, a less invasive treatment is better. We report on the usefulness of metallic stent insertion using an overtube for afferent loop and Roux-limb obstruction caused by postoperative recurrence of biliary tract cancer under short DBE in two patients with complexly reconstructed intestines.
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Micropapillary carcinoma (MPC) has been recently reported as a variant of invasive breast carcinoma. MPC is also known to be an aggressive variant of adenocarcinoma, and it is associated with poor prognosis and a high propensity for lymphovascular invasion and lymph node metastases. MPC of the breast, urinary bladder, and lung has been reported relatively frequently; however, there have been few reports on gastrointestinal MPC. Furthermore, MPC of the small bowel has not been reported yet. Here we report a case of MPC of the jejunum. A female septuagenarian was admitted because of anorexia and weight loss. We established a diagnosis of primary jejunal cancer and resected the duodenum and a part of the jejunum. Histologically, the tumor consisted of adenocarcinoma with moderate to poor differentiation. Among the carcinoma cells, approximately 10% formed small papillary neoplastic cell clusters surrounded by clear spaces, suggesting a diagnosis of MPC. We present the details of the case along with a review of relevant literature.
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Carcinoma Papilar/diagnóstico , Neoplasias do Jejuno/patologia , Idoso , Carcinoma Papilar/cirurgia , Feminino , Humanos , Neoplasias do Jejuno/cirurgia , Metástase Linfática , Estadiamento de Neoplasias , Tomografia Computadorizada por Raios XRESUMO
A man in his twenties had intermittent abdominal pain in the right lower quadrant for more than 4 years. The abdominal pain persisted after a meal, and he visited our hospital emergency department. We performed an emergency colonoscopy and found a 3-cm mobile polypoid lesion located on the antimesenteric side of the ileum 40 cm from the ileocecal valve and was 85×26×23 mm in size. On the basis of characteristic ultrasound and contrast-enhanced CT findings, our preoperative diagnosis was intussusception due to Meckel's diverticulum translation and performed a laparoscopic ileocecal resection. The pathological diagnosis was Meckel's diverticulum translation with ectopic pancreatic and gastric tissue. Furthermore, we aggregated the cases of adult intussusception due to Meckel's diverticulum translation reported in Japan, and investigated preoperative diagnoses and treatment plans.
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Colonoscopia , Intussuscepção/etiologia , Intussuscepção/patologia , Divertículo Ileal/patologia , Humanos , Masculino , Adulto JovemRESUMO
Follicular cholangitis is a sclerosing cholangitis with hilar biliary stricture that must be differentiated from both immunoglobulin G4-related sclerosing cholangitis and primary sclerosing cholangitis. This disorder is extremely rare and difficult to distinguish from hilar biliary cholangiocarcinoma. We report here a case of a Japanese female patient in her 60s with this disease. The patient visited a family doctor for itching and general fatigue. Blood examination showed elevated hepatobiliary enzyme levels. Various imaging studies showed dilation of the bilateral intrahepatic bile duct and wide stenosis from the proximal bile duct to the right and left hepatic duct. They also showed the enlargement of multiple lymph nodes in the hepatoduodenal ligament, periaorta, and mesocolon. Based on endoscopic retrograde cholangiopancreatography-directed brush cytology, we diagnosed this patient with hilar cholangiocarcinoma and performed left trisegmentectomy of the liver. The pathology results showed that the wall from the bilateral hepatic duct to the proximal bile duct had thickened irregularly with dense fibrosis and a marked formation of lymph follicles. The mucosal epithelia did not have malignant findings. The diagnosis was follicular cholangitis. This case indicates that follicular cholangitis should be considered as a differential diagnosis of hilar biliary stricture.
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Neoplasias dos Ductos Biliares/diagnóstico , Colangite Esclerosante/diagnóstico , Tumor de Klatskin/diagnóstico , Diagnóstico Diferencial , Feminino , Humanos , Pessoa de Meia-IdadeRESUMO
A woman in her 50s was found to have a pancreatic mass on abdominal ultrasound. The tumor measured 40 mm in diameter and included a cystic lesion and calcification. In this case, we suspected a diagnosis of solid pseudopapillary neoplasm (SPN) due to the findings observed on various images. However, we were unable to exclude the possibility that the lesion was a neuroendocrine tumor. Therefore, we performed endoscopic ultrasound (EUS)-guided fine-needle aspiration (EUS-FNA). In addition, in order to confirm the diagnosis of SPN, we performed minimized resection (segmental pancreatectomy). Obtaining a definitive preoperative diagnosis of SPN using EUS-FNA can guide the surgical approach.
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Carcinoma Papilar/diagnóstico , Aspiração por Agulha Fina Guiada por Ultrassom Endoscópico , Neoplasias Pancreáticas/diagnóstico , Carcinoma Papilar/patologia , Carcinoma Papilar/cirurgia , Feminino , Humanos , Imageamento por Ressonância Magnética , Pessoa de Meia-Idade , Pâncreas/diagnóstico por imagem , Pâncreas/patologia , Pâncreas/cirurgia , Pancreatectomia , Neoplasias Pancreáticas/patologia , Neoplasias Pancreáticas/cirurgia , Resultado do TratamentoRESUMO
AIM: To investigate the predictors of success in step-down of proton pump inhibitor and to assess the quality of life (QOL). METHODS: Patients who had heartburn twice a week or more were treated with 20 mg omeprazole (OPZ) once daily for 8 wk as an initial therapy (study 1). Patients whose heartburn decreased to once a week or less at the end of the initial therapy were enrolled in study 2 and treated with 10 mg OPZ as maintenance therapy for an additional 6 mo (study 2). QOL was investigated using the gastrointestinal symptom rating scale (GSRS) before initial therapy, after both 4 and 8 wk of initial therapy, and at 1, 2, 3, and 6 mo after starting maintenance therapy. RESULTS: In study 1, 108 patients were analyzed. Their characteristics were as follows; median age: 63 (range: 20-88) years, sex: 46 women and 62 men. The success rate of the initial therapy was 76%. In the patients with successful initial therapy, abdominal pain, indigestion and reflux GSRS scores were improved. In study 2, 83 patients were analyzed. Seventy of 83 patients completed the study 2 protocol. In the per-protocol analysis, 80% of 70 patients were successful for step-down. On multivariate analysis of baseline demographic data and clinical information, no previous treatment for gastroesophageal reflux disease (GERD) [odds ratio (OR) 0.255, 95% CI: 0.06-0.98] and a lower indigestion score in GSRS at the beginning of step-down therapy (OR 0.214, 95% CI: 0.06-0.73) were found to be the predictors of successful step-down therapy. The improved GSRS scores by initial therapy were maintained through the step-down therapy. CONCLUSION: OPZ was effective for most GERD patients. However, those who have had previous treatment for GERD and experience dyspepsia before step-down require particular monitoring for relapse.
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Refluxo Gastroesofágico/tratamento farmacológico , Omeprazol/administração & dosagem , Inibidores da Bomba de Prótons/administração & dosagem , Dor Abdominal/tratamento farmacológico , Dor Abdominal/etiologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Distribuição de Qui-Quadrado , Esquema de Medicação , Dispepsia/tratamento farmacológico , Dispepsia/etiologia , Endoscopia Gastrointestinal , Feminino , Refluxo Gastroesofágico/complicações , Refluxo Gastroesofágico/diagnóstico , Azia/tratamento farmacológico , Azia/etiologia , Humanos , Japão , Estimativa de Kaplan-Meier , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Razão de Chances , Qualidade de Vida , Recidiva , Medição de Risco , Fatores de Risco , Fatores de Tempo , Resultado do Tratamento , Adulto JovemRESUMO
In order to evaluate the biochemical characteristics of 14 substrains of Mycobacterium bovis bacillus Calmette Guérin (BCG) - Russia, Moreau, Japan, Sweden, Birkhaug, Danish, Glaxo, Mexico, Tice, Connaught, Montreal, Phipps, Australia and Pasteur - we performed eight different biochemical tests, including those for nitrate reduction, catalase, niacin accumulation, urease, Tween 80 hydrolysis, pyrazinamidase, p-amino salicylate degradation and resistance to thiophene 2-carboxylic acid hydrazide. Catalase activities of the substrains were all low. Data for nitrate reduction, niacin accumulation, Tween 80 hydrolysis, susceptibility to hydrogen peroxide and nitrate, and optimal pH for growth were all variable among these substrains. These findings suggest that the heterogeneities of biochemical characteristics are relevant to the differences in resistance of BCG substrains to environmental stress. The study also contributes to the re-evaluation of BCG substrains for use as vaccines.
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Variação Genética , Mycobacterium bovis/classificação , Mycobacterium bovis/fisiologia , Animais , Técnicas de Tipagem Bacteriana , Linhagem Celular , Feminino , Humanos , Macrófagos/microbiologia , Camundongos , Camundongos Endogâmicos C57BL , Viabilidade Microbiana , Monócitos/microbiologia , Mycobacterium bovis/crescimento & desenvolvimento , Mycobacterium bovis/metabolismoRESUMO
During the serial passage of Mycobacterium bovis bacillus Calmette-Guérin (BCG) in different countries after initial seed distribution from the Pasteur Institute, specific insertions and deletions in the genome among BCG substrains were observed and speculated to result in differences in immunological activities. 'Early-shared strains' of BCG (Russia, Moreau, Japan, Sweden, Birkhaug), distributed by the Pasteur Institute, which conserve three types of mycolate (alpha, methoxy, keto) in cell wall, exhibited stronger activities of induction of nitric oxide, interleukin-1beta (IL-1beta), IL-6, IL-8, IL-12 and tumor necrosis factor (TNF)-alpha, from human epithelial cell line A549, human myelomonocytic cell line THP-1 and mouse bone marrow cells in the presence of interferon-gamma (IFN-gamma) than did 'late-shared strains' of BCG (Danish, Glaxo, Mexico, Tice, Connaught, Montreal, Phipps, Australia, Pasteur). The stronger induction of IL-12 and TNF-alpha in the presence of IFN-gamma was also observed by trehalose 6,6'-dimycolate (TDM) extracted from BCG-Japan than by TDM from BCG-Connaught, which lacks the methoxymycolate residue. These results suggest that 'early-shared strains' are more potent immunostimulating agents than 'late-shared strains', which could be attributed partially to methoxymycolate. Our study provides the basic information for immunological characterization of various BCG strains and may contribute to a re-evaluation of them as a reference strain for vaccination against tuberculosis.
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Células Epiteliais/imunologia , Interleucinas/metabolismo , Monócitos/imunologia , Mycobacterium bovis/imunologia , Óxido Nítrico/biossíntese , Fator de Necrose Tumoral alfa/metabolismo , Animais , Linhagem Celular , Células Cultivadas , Fatores Corda/imunologia , Fatores Corda/isolamento & purificação , Células Epiteliais/microbiologia , Feminino , Humanos , Interferon gama/imunologia , Camundongos , Monócitos/microbiologiaRESUMO
BACKGROUND: We evaluated the annual rate of fibrosis progression in chronic hepatitis B and C patients with elevated alanine aminotransferase (ALT) levels. METHODS: Forty-nine chronic hepatitis B patients and 21 chronic hepatitis C patients, each of whom had undergone two or more liver biopsies at an interval of more than 1 year, were enrolled in this retrospective clinical research protocol. The annual rate of fibrosis progression was calculated by dividing the change in fibrosis stage between the first and second liver biopsies by the interval in years between them. RESULTS: The median interval in chronic hepatitis B and C was 3.4 (first and third quartiles, 1.8-4.7) and 3.2 (2.1-6.5) years, respectively. Overall, the mean fibrosis progression rate was 0.21 +/- 0.31 (mean +/- SD) fibrosis units (FU) per year in 49 patients with chronic hepatitis B, and 0.13 +/- 0.18 FU/year in 21 patients with chronic hepatitis C. The ALT level was an independent variable correlating with fibrosis progression. In patients whose median ALT level was 70 IU/l or more, the mean fibrosis progression rate was 0.28 +/- 0.32 FU/year in 36 patients with chronic hepatitis B, and 0.22 +/- 0.23 FU/year in eight patients with chronic hepatitis C. CONCLUSION: This paired-biopsy study of untreated chronic hepatitis B or C demonstrated that fibrosis progression occurred largely in patients with continuously elevated ALT levels even over a relatively short period, and that liver fibrosis might progress by one stage within an average of 4-5 years of follow-up in patients with elevated ALT of 70 IU/l or more.
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Alanina Transaminase/sangue , Hepatite B Crônica/patologia , Hepatite C Crônica/patologia , Cirrose Hepática/patologia , Adulto , Biomarcadores/sangue , Biópsia por Agulha , Progressão da Doença , Feminino , Hepatite B Crônica/sangue , Hepatite C Crônica/sangue , Humanos , Fígado/patologia , Cirrose Hepática/virologia , MasculinoRESUMO
PhiRSA1 is a wide-host-range bacteriophage isolated from Ralstonia solanacearum. In this study, the complete nucleotide sequence of the phiRSA1 genomic DNA was determined. The genome was 38,760 bp of double-stranded DNA (65.3% G+C) with 19-bp 5'-extruding cohesive ends (cos) and contained 51 open reading frames (ORFs). Two-thirds of the phiRSA1 genomic region encodes the phage structural modules, and they are very similar to those reported for coliphage P2 and P2-like phages. A phiRSA1 minireplicon with an 8.2-kbp early-expressing region was constructed. A late-expression promoter sequence motif was predicted for these phiRSA1 genes as 5' TGTTGT-(X)13-ACAACA. The genomic sequence similarity between phiRSA1 and related phages phi52237 and phiCTX was interrupted by three AT islands, one of which contained an insertion sequence element, suggesting that they were recombinational hot spots. phiRSA1 was found to be integrated into at least three different strains of R. solanacearum, and the chromosomal integration site (attB) was identified as the 3' portion of the arginine tRNA(CCG) gene. In the light of the phiRSA1 gene arrangement, one possible prophage sequence previously detected on the chromosome of R. solanacearum strain GMI1000 was characterized as a phiRSA1-related prophage (designated phiRSX). phiRSX was found to be integrated at the serine tRNA (GGA) gene as an att site, and its size was determined to be 40,713 bp. phiRSX ORFs shared very high amino acid identity with their phiRSA1 counterparts. The relationships and evolution of these P2-like phages are discussed.
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Bacteriófagos/genética , DNA Viral/genética , Genoma Viral , Prófagos/genética , Ralstonia solanacearum/virologia , Bacteriófagos/classificação , Bacteriófagos/patogenicidade , Primers do DNA , DNA Viral/isolamento & purificação , Genoma de Planta , Hibridização In Situ , Lisogenia , Dados de Sequência Molecular , Fases de Leitura Aberta , Ralstonia solanacearum/classificação , Ralstonia solanacearum/crescimento & desenvolvimento , Ralstonia solanacearum/patogenicidade , Nicotiana/microbiologia , VirulênciaRESUMO
BACKGROUND AND AIM: Bleeding from esophageal varices is one of the frequent severe complications arising in patients with liver cirrhosis. The management of esophageal varices is therefore important for patient survival. The purpose of this study was to clarify the predictive factors for mortality in patients with Child C cirrhosis presenting with variceal bleeding. METHODS: A retrospective analysis of 77 Child C cirrhotic patients with bleeding from esophageal varices was conducted. All patients received endoscopic therapy. Twenty-nine patients received endoscopic variceal ligation, and 48 patients received endoscopic injection sclerotherapy or endoscopic injection sclerotherapy with ligation. Univariate and multivariate analyses of clinical data were performed to identify the prognostic factors for survival for these 77 patients. RESULTS: Fifty-seven of 77 patients received endoscopic therapy within 24 h after variceal bleeding, and bleeding was controlled in 55 (96.5%). The remaining 20 patients received endoscopic therapy more than 24 h after bleeding. Higher bilirubin level and rebleeding were the predictive parameters for 6-week survival in the 77 patients, according to univariate and multivariate analysis. Higher bilirubin level, refractory ascites, and the presence of hepatocellular carcinoma were the predictive parameters for mortality in 77 patients as determined by multivariate analysis. CONCLUSIONS: Endoscopic therapy was effective in controlling acute variceal bleeding of Child C cirrhotic patients. The prognosis of Child C stage patients presenting with variceal bleeding depended on the severity of liver damage and the presence of hepatocellular carcinoma.
Assuntos
Varizes Esofágicas e Gástricas/terapia , Esofagoscopia , Hemorragia Gastrointestinal/terapia , Cirrose Hepática/complicações , Carcinoma Hepatocelular/complicações , Carcinoma Hepatocelular/mortalidade , Varizes Esofágicas e Gástricas/etiologia , Varizes Esofágicas e Gástricas/mortalidade , Feminino , Hemorragia Gastrointestinal/etiologia , Hemorragia Gastrointestinal/mortalidade , Humanos , Injeções Intralesionais , Ligadura , Cirrose Hepática/mortalidade , Neoplasias Hepáticas/complicações , Neoplasias Hepáticas/mortalidade , Masculino , Modelos de Riscos Proporcionais , Soluções Esclerosantes/administração & dosagem , Escleroterapia , Análise de Sobrevida , Resultado do TratamentoRESUMO
BACKGROUND: Platelet count has been shown to correlate with the hepatic fibrosis stage in chronic hepatitis C (CHC). The aim of the present study was to assess hepatic fibrosis progression or regression of CHC patients by long-term monitoring of the platelet count. METHODS: A total of 429 interferon (IFN)-treated CHC patients were studied. Follow-up data on the platelet count were collected every 6 months after IFN therapy. The IFN response was defined as follows: complete responders (CR, n = 121) demonstrating persistent clearance of serum hepatitis C virus (HCV) RNA; biochemical responders (BR, n = 94) demonstrating alanine aminotransferase (ALT) normalization for >/=6 months without eradication of HCV-RNA; and non-responder (NR, n = 214) demonstrating all other patterns. RESULTS: In comparison with the baseline level, mean platelet count increased in the CR group from 0.5 years after IFN therapy (for each point, P < 0.01), but significantly decreased in the NR group from 1 year after IFN therapy (for each point, P < 0.01). In the BR group, an increase in mean platelet count was observed from 0.5 to 3.5 years following IFN therapy (for each point, P < 0.01), followed by a gradual decrease. CONCLUSION: An increase from baseline values in platelet count was observed, regardless of the presence of HCV-RNA, in both the CR and BR groups, suggesting the importance of ALT normalization in preventing hepatic fibrosis progression in IFN-treated CHC patients.