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1.
Med Princ Pract ; 24(5): 470-6, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-26111863

RESUMEN

OBJECTIVE: This study was designed to identify the effect of rivaroxaban, a direct factor Xa inhibitor, on trinitrobenzene sulfonic acid (TNBS)-induced colitis in rats. MATERIALS AND METHODS: Twenty-four female Wistar rats were divided into 4 groups of 6 each. Group 1 received TNBS + rivaroxaban, group 2 received TNBS + methylprednisolone, group 3 received TNBS and group 4 received a saline enema. Colitis was induced in the rats by the intracolonic administration of TNBS. Rivaroxaban and methylprednisolone were given by oral gavage daily for 7 days. The rats were killed 7 days after the induction of colitis. RESULTS: Rivaroxaban and methylprednisolone significantly reduced gross damage and histopathological scores. Rivaroxaban was more effective than methylprednisolone in terms of microscopic mucosal healing. Rivaroxaban attenuated the accumulation of malonyldialdehyde (MDA) and transforming growth-factor ß1 (TGF-ß1) and the activities of myeloperoxidase (MPO), matrix metalloproteinase-3 and tissue inhibitor of metalloproteinases-1. Methylprednisolone reduced only the activity of MPO and the accumulation of MDA and TGF-ß1. Superoxide dismutase activity showed a restoration to normal levels after rivaroxaban and methylprednisolone administration. CONCLUSIONS: Rivaroxaban showed a therapeutic effect in the TNBS model of experimental colitis, and it seemed to be at least as effective as methylprednisolone. This effect may be brought about by the inhibition of oxidative stress and metalloproteinase activity associated with tissue injury and remodeling.


Asunto(s)
Colitis/tratamiento farmacológico , Inhibidores del Factor Xa/farmacología , Mucosa Intestinal/efectos de los fármacos , Rivaroxabán/farmacología , Cicatrización de Heridas/efectos de los fármacos , Animales , Colitis/inducido químicamente , Colitis/patología , Modelos Animales de Enfermedad , Femenino , Inmunosupresores/farmacología , Malondialdehído/metabolismo , Metilprednisolona/farmacología , Ratas , Ratas Wistar , Factor de Crecimiento Transformador beta1/metabolismo , Ácido Trinitrobencenosulfónico/efectos adversos
2.
Toxicol Ind Health ; 26(2): 67-79, 2010 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-20056743

RESUMEN

Determination of the genetic alterations, which play a role in the etiology of Barrett's esophagus (BE), could help identify high-risk individuals for esophageal adenocarcinoma (EA). The aim of the present study was to investigate the role of oxidative DNA damage, glutathione (GSH) concentration as oxidative stress parameters and DNA repair capacity, GSTM1, SOD1 Ala16Val and OGG1 Ser326Cys genetic polymorphisms as individual susceptibility parameters in the etiology of BE. The study groups comprised BE patients who were clinically diagnosed (n = 40) and a healthy control group (n = 40). Basal DNA damage, pyrimidine and purine base damage after H(2)O(2) induction, H( 2)O(2) sensitivity, DNA repair capacity, oxidized pyrimidine and purine base damage repair were evaluated in peripheral blood lymphocytes with a modified comet assay using specific endonucleases (Endo III and Fpg). Polymerase chain reaction-restriction length polymorphism (PCR-RFLP)-based assays were used for genotyping. The patient group showed elevated levels of basal DNA damage, pyrimidine base damage and H(2)O(2) sensitivity as compared to controls (p < .05). DNA repair capacity, oxidized pyrimidine and purine base damage repair capacity, were not statistically different between patients and controls. GSH concentration was found to be significantly lower in smoking patients than in the controls (p < .05). None of the genetic variations changed the risk of having BE disease. However, patients carrying the variant OGG1 Cys allele showed elevated levels of pyrimidine base damage as compared to patients carrying the wild-type OGG1 Ser (p < .05). The results of this study point to a role of oxidative DNA damage in BE. However, DNA repair capacity, GSTM1, SOD1 Ala16Val and OGG1 Ser326Cys genetic polymorphisms appeared to play no role in the individual susceptibility to this disease.


Asunto(s)
Esófago de Barrett/enzimología , Esófago de Barrett/genética , Daño del ADN/fisiología , ADN Glicosilasas/genética , Glutatión Transferasa/genética , Superóxido Dismutasa/genética , Adolescente , Adulto , Anciano , Análisis de Varianza , Biomarcadores/metabolismo , Estudios de Casos y Controles , Ensayo Cometa , Reparación del ADN , Femenino , Predisposición Genética a la Enfermedad , Glutatión/metabolismo , Humanos , Peróxido de Hidrógeno , Masculino , Persona de Mediana Edad , Estadísticas no Paramétricas
3.
Gastrointest Endosc ; 69(2): 244-52, 2009 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-19019364

RESUMEN

BACKGROUND: Factors affecting diagnostic accuracy and comparison of patients in the follow-up period for negative outcomes are not thoroughly investigated in a randomized trial. OBJECTIVE: Our purpose was to compare diagnostic accuracy, complications, and number of interventions. DESIGN: Prospective, unicentric, single-blind, randomized study. SETTING: Single tertiary referral university hospital. PATIENTS: One hundred twenty patients with intermediate risk for common bile duct (CBD) stones were randomized to either an EUS-first, endoscopic retrograde cholangiography (ERC)-second (n = 60) versus an ERC-only (n = 60) procedure. INTERVENTIONS: EUS, ERC, sphincterotomy, and balloon sweeping of CBD when needed. MAIN OUTCOME MEASUREMENTS: Sensitivity of EUS versus ERC, factors affecting diagnostic capability, complications, total number of endoscopic procedures. RESULTS: The sensitivity and specificity of ERC were 75% (95% CI, 42%-93%) and 100% (95% CI, 95%-100%), respectively. The sensitivity and specificity of EUS were 91% (95% CI, 59%-99%) and 100% (95% CI, 95%-100%), respectively. EUS is more sensitive than ERC in detecting stones smaller than 4 mm (90% vs 23%, P < .01). Although not significant, there was a trend for an increased number of endoscopic procedures in the ERC group compared with the EUS group (98 vs 83). The post-ERC pancreatitis rate was 6 in 120 (5%) in all study patients, and the post-ERC pancreatitis rate in patients with an undilated CBD was 5 of 53 (9.43%). The independent factors for post-ERC pancreatitis are undilated CBD (risk ratio [RR] 6.320; 95% CI, 1.703-11.524, P = .009), allocation into the ERC group (RR 2.107; 95% CI, 1.330-3.339, P = .02), female sex (RR 1.803; 95% CI, 1.155-2.813, P = .03), and age less than 40 years (RR 1.888; 95% CI, 1.245-2.863, P = .01). Kaplan-Meier analysis revealed higher rate of negative outcome in the ERC group than in the EUS group (P = .049, log-rank test). CONCLUSION: The EUS-first approach is not associated with further risk for subsequent endoscopic procedures. Patients with an undilated CBD should be investigated by the EUS-first approach to prevent post-ERC pancreatitis.


Asunto(s)
Colangiopancreatografia Retrógrada Endoscópica , Endosonografía , Cálculos Biliares/diagnóstico , Femenino , Humanos , Masculino , Persona de Mediana Edad , Pancreatitis/prevención & control , Complicaciones Posoperatorias/prevención & control , Estudios Prospectivos , Sensibilidad y Especificidad
4.
Neurol India ; 57(2): 188-90, 2009.
Artículo en Inglés | MEDLINE | ID: mdl-19439852

RESUMEN

Inflammatory bowel diseases are associated with increased risk for thrombotic complications, In patients with ulcerative colitis (UC) cerebral sinus venous thrombosis (CSVT) is an extremely rare complication. We report a patient with active UC and CSVT. The patient was heterozygous for Factor V Leiden and G20210A prothrombin gene mutations without other identifiable precipitating factors. This patient highlights the need for investigating the patients with UC with thrombotic complications for other thrombophilic states.


Asunto(s)
Colitis Ulcerosa/complicaciones , Colitis Ulcerosa/genética , Factor V/genética , Mutación/genética , Protrombina/genética , Trombosis de los Senos Intracraneales/etiología , Antiinflamatorios/uso terapéutico , Femenino , Humanos , Angiografía por Resonancia Magnética/métodos , Prednisona/uso terapéutico , Trombosis de los Senos Intracraneales/tratamiento farmacológico , Adulto Joven
5.
Eur J Gastroenterol Hepatol ; 20(1): 33-6, 2008 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-18090988

RESUMEN

BACKGROUND/AIMS: Several reports indicated an increased prevalence of the Helicobacter species in hepatocellular cancer tissue and in liver samples infected with hepatitis viruses. The frequency of Helicobacter spp. in benign liver diseases was, however, not thoroughly investigated. METHODS: Seventy-five consecutive patients with suspected liver disease were enrolled. The indications were hepatitis B virus (n=30), C virus (n=8), B and C dual infection (n=1), nonalcoholic steatohepatitis (n=27), autoimmune hepatitis (n=3), primary biliary cirrhosis (n=1) and idiopathic elevation of liver enzymes (n=5). PCR detection of 16S recombinant RNA gene of Helicobacter spp. was performed on liver samples. PCR products of positive samples were further identified by DNA sequencing. The patients also had upper gastrointestinal endoscopy and gastric biopsy for the detection of H. pylori using histopathology and PCR. RESULTS: Helicobacter spp. DNA was detected in two out of 75 liver biopsy samples (2.6%), which were typed as H. pylori by DNA sequencing. One of these patients had chronic hepatitis C infection (man, 51 years old) and the other had nonalcoholic steatohepatitis (woman, 44 years old). Fifty-two out of 75 of the patients (69.3%) had H. pylori infection in their stomachs. CONCLUSION: We have found that H. pylori infection is much less prevalent in benign liver diseases. The presence of H. pylori in nonalcoholic steatohepatitis (NASH) patients is a novel finding and this finding should be confirmed in a larger series.


Asunto(s)
ADN Bacteriano/análisis , ADN Ribosómico/análisis , Infecciones por Helicobacter/microbiología , Helicobacter pylori/genética , Hepatopatías/microbiología , Femenino , Helicobacter pylori/aislamiento & purificación , Humanos , Hígado/microbiología , Masculino , Persona de Mediana Edad , Reacción en Cadena de la Polimerasa/métodos , Análisis de Secuencia de ADN/métodos
6.
Ann Nucl Med ; 22(7): 611-6, 2008 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-18756364

RESUMEN

OBJECTIVE: The carbon-14 ((14)C) urea breath test (UBT) is a reliable and noninvasive technique for the diagnosis of Helicobacter pylori (HP) infection. The diagnostic performance of a new practical and low dose (14)C UBT system (Heliprobe, Stockholm, Sweden) was compared with those of other diagnostic tests, namely, rapid urease test (RUT), histopathology, and DNA detection using polymerase chain reaction (PCR). METHODS: Eighty-nine patients (mean age = 45 +/- 13, 30 men) with dyspeptic complaints who underwent an endoscopic procedure were studied. Biopsy specimens acquired during the procedure were subjected to RUT, histopathological examination using hematoxylin and eosin (HP-HE) and PCR. All patients underwent UBT using the Heliprobe system on a different day. The gold standard for HP positivity was defined as any two of the three tests being positive, excluding UBT, and the sensitivity and specificity of any single test alone were determined using this gold standard. Whenever only one test was positive, it was considered to be a false-positive one. RESULTS: With the gold standard used in this study, 59 (66%) patients were diagnosed HP positive. The Heliprobe method detected HP infection with 96.6% sensitivity and 100% specificity and had the best diagnostic performance when compared with all the other methods. The sensitivity and specificity of the other methods for the detection of HP positivity were 89.8% and 100% for RUT, 93.2% and 63.3% for PCR, and 93.2% and 76.6% for HP-HE, respectively. Areas under the receiver-operating characteristic were 0.977 for UBT, 0.947 for RUT, 0.84 for HP-HE, and 0.775 for PCR. CONCLUSIONS: Using a combination of invasive diagnostic tests as the gold standard, Heliprobe UBT was found to be highly sensitive and specific for the diagnosis of HP infection in patients with dyspeptic complaints.


Asunto(s)
Pruebas Respiratorias/métodos , Radioisótopos de Carbono , Infecciones por Helicobacter/diagnóstico por imagen , Urea , Adulto , Biopsia , Eosina Amarillenta-(YS) , Femenino , Hematoxilina , Técnicas Histológicas , Humanos , Masculino , Persona de Mediana Edad , Reacción en Cadena de la Polimerasa , Cintigrafía , Sensibilidad y Especificidad , Urea/análisis , Ureasa
7.
Ren Fail ; 30(2): 187-91, 2008.
Artículo en Inglés | MEDLINE | ID: mdl-18300119

RESUMEN

Familial Mediterranean Fever (FMF) is an autosomal recessive disease characterized by periodic attacks of fever and polyserositis. The effects of the MEFV genotype differences on clinical picture and inflammatory activity have not been well documented. The aim of this study was to investigate levels of conventional inflammation markers, procalcitonin, interleukin levels, TNF-alpha, and C5a levels in patients with FMF who had different MEFV genotypes and compare them with those of healthy subjects. The study consisted of 41 patients with FMF (F/M: 23/18), and 31 healthy subjects (F/M: 18/13). Tests were performed during the attack-free period. White-blood cell count, CRP and IL-8 levels were higher in patients with FMF than in healthy subjects (p < 0.05) and also higher in M680I carriers than in the patients with M694V allele carriers. However, ESR, fibrinogen, procalcitonin, IL-6, C5a, TNF-alpha, and IgD levels were not significantly different between patients and healthy subjects (p > 0.05). Arthralgia or arthritis was significantly higher in M694V carriers than in non-M694V carriers (p < 0.05). It is concluded that the clinical features and inflammatory-cytokine activities were higher in patients with FMF during the attack-free period than in healthy subjects, and the different genotype might be related to different clinical pictures.


Asunto(s)
Proteínas del Citoesqueleto/genética , Fiebre Mediterránea Familiar/genética , Mediadores de Inflamación/análisis , Adulto , Sedimentación Sanguínea , Proteína C-Reactiva/análisis , Proteína C-Reactiva/metabolismo , Estudios de Casos y Controles , Progresión de la Enfermedad , Fiebre Mediterránea Familiar/fisiopatología , Femenino , Fibrinógeno/análisis , Fibrinógeno/metabolismo , Estudios de Seguimiento , Genotipo , Humanos , Masculino , Probabilidad , Pirina , ARN Mensajero/análisis , Valores de Referencia , Medición de Riesgo , Sensibilidad y Especificidad , Índice de Severidad de la Enfermedad , Estadísticas no Paramétricas
8.
Adv Ther ; 25(6): 552-66, 2008 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-18568450

RESUMEN

INTRODUCTION: The aim of this study was to assess the efficacy and safety of esomeprazole 40 mg once daily (q.d.) in healing reflux oesophagitis at 4 and 8 weeks, and the efficacy of esomeprazole 20 mg q.d. for 12 weeks in the maintenance of remission. METHODS: A total of 235 patients with endoscopically proven reflux oesophagitis were enrolled in this study, which consisted of two phases (healing and maintenance therapy). Patients who showed complete endoscopic and symptomatic healing at the end of 4 or 8 weeks were switched to maintenance treatment with esomeprazole 20 mg q.d. for 12 weeks. The primary efficacy endpoint was healing of reflux oesophagitis at week 8. Secondary assessments included the proportion of patients with symptomatic relapse in the maintenance phase. RESULTS: At the end of week 8, 88% (95% life-table confidence intervals [CI]: 84%, 92%) of patients were healed endoscopically and 90.6% of the patients were asymptomatic. Patient age, gender and Helicobacter pylori status had no effect on the efficacy of treatment. During the 12-week maintenance treatment phase, symptomatic relapse ratios were 0.5%, 2.2%, and 0%, for the first, second, and third 4-week periods, respectively. The proportions of patients satisfied with treatment were 95% and 99.4% at the end of acute and maintenance treatment, respectively. The most common adverse effects were headache, upper respiratory tract infection and abdominal pain. CONCLUSIONS: Esomeprazole is effective in the healing of reflux oesophagitis, the resolution of heartburn, and in maintaining symptomatic remission. The effectiveness of esomeprazole in patients with gastroesophageal reflux disease is not affected by the presence of H. pylori.


Asunto(s)
Antiulcerosos/uso terapéutico , Esomeprazol/uso terapéutico , Esofagitis Péptica/tratamiento farmacológico , Adolescente , Adulto , Anciano , Esquema de Medicación , Endoscopía del Sistema Digestivo , Femenino , Humanos , Masculino , Persona de Mediana Edad , Satisfacción del Paciente , Estudios Prospectivos , Adulto Joven
9.
BMC Gastroenterol ; 7: 44, 2007 Nov 28.
Artículo en Inglés | MEDLINE | ID: mdl-18045488

RESUMEN

BACKGROUND: Peroxisome proliferators-activated receptor alpha (PPARalpha) activation modulates cholesterol metabolism and suppresses bile acid synthesis. This study aims to evaluate the effect of short-term administration of fenofibrate, a PPARalpha agonist, on proinflammatory cytokines, apoptosis, and hepatocellular damage in cholestasis. METHODS: Forty male Wistar rats were randomly divided into four groups: I = sham operated, II = bile duct ligation (BDL), III = BDL + vehicle (gum Arabic), IV = BDL + fenofibrate (100 mg/kg/day). All rats were sacrificed on 7th day after obtaining blood samples and liver tissue. Total bilirubin, aminotransferase (AST), alanine aminotransferase (ALT) and alkaline phosphatase (ALP), gamma-glutamyl transferase, (GGT), tumor necrosis factor alpha (TNF-alpha), interleukin 1 beta (IL-1 beta), and total bile acid (TBA) in serum, and liver damage scores; portal inflammation, necrosis, bile duct number, in liver tissue were evaluated. Apoptosis in liver was also assessed by immunohistochemical staining. RESULTS: Fenofibrate administration significantly reduced serum total bilirubin, AST, ALT, ALP, and GGT, TNF-alpha, IL-1 beta levels, and TBA (P < 0.01). Hepatic portal inflammation, hepatic necrosis, number of the bile ducts and apoptosis in rats with BDL were more prominent than the sham-operated animals (P < 0.01). PPARalpha induction improved all histopathologic parameters (P < 0.01), except for the number of the bile duct, which was markedly increased by fenofibrate therapy (P < 0.01). CONCLUSION: Short-term administration of fenofibrate to the BDL rats exerts beneficial effects on hepatocellular damage and apoptosis.


Asunto(s)
Fenofibrato/farmacología , Ictericia Obstructiva/patología , Ictericia Obstructiva/fisiopatología , Hígado/patología , Hígado/fisiopatología , PPAR alfa/agonistas , Animales , Apoptosis/efectos de los fármacos , Conductos Biliares , Bilirrubina/sangre , Colestasis/complicaciones , Citocinas/sangre , Hepatocitos , Mediadores de Inflamación/sangre , Ictericia Obstructiva/etiología , Ictericia Obstructiva/metabolismo , Ligadura , Hígado/metabolismo , Masculino , Malondialdehído/metabolismo , Ratas , Ratas Wistar
10.
World J Gastroenterol ; 13(19): 2733-7, 2007 May 21.
Artículo en Inglés | MEDLINE | ID: mdl-17569144

RESUMEN

AIM: To compare the beneficial effects of early enteral nutrition (EN) with prebiotic fiber supplementation in patients with severe acute pancreatitis (AP). METHODS: Thirty consecutive patients with severe AP, who required stoppage of oral feeding for 48 h, were randomly assigned to nasojejunal EN with or without prebiotics. APACHE II score, Balthazar's CT score and CRP were assessed daily during the study period. RESULTS: The median duration of hospital stay was shorter in the study group [10 +/- 4 (8-14) d vs 15 +/- 6 (7-26) d] (P < 0.05). The median value of days in intensive care unit was also similar in both groups [6 +/- 2 (5-8) d vs 6 +/- 2 (5-7) d]. The median duration of EN was 8 +/- 4 (6-12) d vs 10 +/- 4 (6-13) d in the study and control groups, respectively (P > 0.05). Deaths occurred in 6 patients (20%), 2 in the study group and 4 in the control group. The mean duration of APACHE II normalization (APACHE II score < 8) was shorter in the study group than in the control group (4 +/- 2 d vs 6.5 +/- 3 d, P < 0.05). The mean duration of CRP normalization was also shorter in the study group than in the control group (7 +/- 2 d vs 10 +/- 3 d, P < 0.05). CONCLUSION: Nasojejunal EN with prebiotic fiber supplementation in severe AP improves hospital stay, duration nutrition therapy, acute phase response and overall complications compared to standard EN therapy.


Asunto(s)
Fibras de la Dieta/uso terapéutico , Suplementos Dietéticos , Nutrición Enteral/métodos , Pancreatitis/dietoterapia , APACHE , Enfermedad Aguda , Reacción de Fase Aguda/fisiopatología , Adulto , Método Doble Ciego , Nutrición Enteral/efectos adversos , Femenino , Humanos , Tiempo de Internación , Masculino , Persona de Mediana Edad , Pancreatitis/fisiopatología , Estudios Prospectivos , Resultado del Tratamiento
11.
World J Gastroenterol ; 13(10): 1595-8, 2007 Mar 14.
Artículo en Inglés | MEDLINE | ID: mdl-17461454

RESUMEN

AIM: To determine the association between H pylori infection and serum ghrelin levels in patients without atrophic gastritis. METHODS: Fifty consecutive patients (24 males and 26 females) with either H pylori-positive gastritis (n = 34) or H pylori-negative gastritis (n = 16) with normal gastric acid secretion determined by 24-h pHmetry and without atrophic gastritis in histopathology were enrolled in this study. Thirty-four H pylori-infected patients were treated with triple therapy consisting of a daily regimen of 30 mg lansoprazole bid, 1 g amoxicillin bid and 500 mg clarithromycin bid for 14 d, followed by an additional 4 wk of 30 mg lansoprazol treatment. H pylori infection was eradicated in 23 of 34 (67.6%) patients. H pylori-positive patients were given eradication therapy. Gastric acidity was determined via intragastric pH catheters. Serum ghrelin was measured by radioimmunoassay (RIA). RESULTS: There was no significant difference in plasma ghrelin levels between H pylori-positive and H pylori-negative groups (81.10 +/- 162.66 ng/L vs 76.51 +/- 122.94 ng/L). In addition, there was no significant difference in plasma ghrelin levels and gastric acidity levels measured before and 3 mo after the eradication therapy. CONCLUSION: H pylori infection does not influence ghrelin secretion in patients with chronic gastritis without atrophic gastritis.


Asunto(s)
Gastritis/sangre , Infecciones por Helicobacter/sangre , Helicobacter pylori/fisiología , Hormonas Peptídicas/sangre , 2-Piridinilmetilsulfinilbencimidazoles/uso terapéutico , Adulto , Amoxicilina/uso terapéutico , Antibacterianos/uso terapéutico , Claritromicina/uso terapéutico , Quimioterapia Combinada , Femenino , Gastritis/microbiología , Ghrelina , Infecciones por Helicobacter/tratamiento farmacológico , Helicobacter pylori/patogenicidad , Humanos , Concentración de Iones de Hidrógeno , Lansoprazol , Masculino , Persona de Mediana Edad , Turquía
12.
Clin Drug Investig ; 26(5): 297-302, 2006.
Artículo en Inglés | MEDLINE | ID: mdl-17163263

RESUMEN

Hypertriglyceridaemia is a well known risk factor for acute pancreatitis. Hypertriglyceridaemia may be primary in origin or secondary to alcohol abuse, diabetes mellitus, pregnancy or use of drugs. In this case report, the cause of acute pancreatitis was tamoxifen. We report on a patient with tamoxifen-induced acute pancreatitis and hypertriglyceridaemia who was successfully treated with insulin infusion and long-term gemfibrozil.


Asunto(s)
Hipertrigliceridemia/inducido químicamente , Pancreatitis/inducido químicamente , Tamoxifeno/efectos adversos , Enfermedad Aguda , Antagonistas de Estrógenos/efectos adversos , Antagonistas de Estrógenos/uso terapéutico , Femenino , Gemfibrozilo/uso terapéutico , Humanos , Hipertrigliceridemia/diagnóstico , Hipertrigliceridemia/tratamiento farmacológico , Hipolipemiantes , Insulina/uso terapéutico , Persona de Mediana Edad , Dolor/inducido químicamente , Dolor/tratamiento farmacológico , Pancreatitis/diagnóstico , Pancreatitis/tratamiento farmacológico , Tamoxifeno/uso terapéutico , Resultado del Tratamiento , Vómitos/inducido químicamente , Vómitos/tratamiento farmacológico
13.
Clin Drug Investig ; 26(8): 481-4, 2006.
Artículo en Inglés | MEDLINE | ID: mdl-17163280

RESUMEN

Cefoperazone is a third-generation cefalosporin that contains the N-methyl- thio-tetrazole (NMTT) side chain, which inhibits vitamin K-dependent carboxylation. Administration of NMTT-containing cefalosporins can cause alterations in the hepatic glutathione redox state, resulting in a dose-related increase in oxidised glutathione, which is responsible for the inhibition of microsomal reduction of vitamin K epoxide. In addition, cefoperazone is not metabolised and is excreted predominantly through the bile. In patients with hepatic impairment, the clearance of cefoperazone has been shown to be significantly reduced and the half-life prolonged. We report a case of choledocholithiasis related to a prolonged prothrombin time and INR secondary to cefoperazone therapy.


Asunto(s)
Cefoperazona/efectos adversos , Coledocolitiasis/inducido químicamente , Relación Normalizada Internacional , Anciano , Antibacterianos/efectos adversos , Antibacterianos/uso terapéutico , Cefoperazona/uso terapéutico , Coledocolitiasis/sangre , Coledocolitiasis/diagnóstico , Femenino , Humanos , Hipoprotrombinemias/sangre , Hipoprotrombinemias/inducido químicamente , Hipoprotrombinemias/diagnóstico , Tiempo de Protrombina
14.
Turk J Gastroenterol ; 16(2): 93-7, 2005 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-16252200

RESUMEN

Chronic intestinal pseudoobstruction is a rare disorder of intestinal motility, characterized by recurrence of continuous symptoms and signs of intestinal obstruction in the absence of true mechanical obstruction. Congenital or systemic disorders are the causes of chronic intestinal pseudoobstruction. The term idiopathic is applied when there is no congenital or secondary cause. Early diagnosis of intestinal pseudoobstruction is important to avoid repeated laparotomies. Treatment of chronic intestinal pseudoobstruction is usually supportive. Besides the supportive therapy, prokinetic agents such as erythromycin and octreotide are used in the therapy. In this article, four pediatric patients diagnosed as chronic intestinal pseudoobstruction are discussed with their clinical findings and laboratory abnormalities. The etiology of chronic intestinal pseudoobstruction was visceral myopathy in one patient. Two had idiopathic chronic intestinal pseudoobstruction and the other patient developed chronic intestinal pseudoobstruction after cardiac surgery. Erythromycin was administered to all four patients, one of whom did not respond to this therapy. Octreotide was effective in this case.


Asunto(s)
Seudoobstrucción Intestinal , Adolescente , Niño , Enfermedad Crónica , Diagnóstico Diferencial , Eritromicina/uso terapéutico , Femenino , Estudios de Seguimiento , Fármacos Gastrointestinales/uso terapéutico , Humanos , Seudoobstrucción Intestinal/diagnóstico , Seudoobstrucción Intestinal/tratamiento farmacológico , Seudoobstrucción Intestinal/etiología , Masculino , Octreótido/uso terapéutico , Radiografía Abdominal , Tomografía Computarizada por Rayos X
15.
Curr Ther Res Clin Exp ; 66(5): 451-62, 2005 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-24790245

RESUMEN

BACKGROUND: The most effective current therapy for hepatitis C virus (HCV) infection is the combination of pegylated interferon (peg-IFN) plus ribavirin (RBV). OBJECTIVE: The aim of this retrospective analysis was to determine the rateof response to this therapy, and the factors affecting outcome, in patients with treatment-refractory chronic HCV genotype l b. METHODS: The records of patients with chronic HCV infection and HCV geno-type1b who failed (nonresponse or relapse) previous treatment with standard interferon (IFN) + RSV were retrospectively analyzed for demographic data, virologic load, liver histology, biochemistry, treatment-related adverse effects (AEs), and the effects of dose reduction during treatment with peg-IFN + RBV for 48 weeks. Early virologic response (EVR) was defined as ≥2-log (copies/mL) decrease from baseline in serum HCV RNA concentration or the absence of detectable serum HCV RNA at treatment week 12. End-of-treatment response (ETR) was defined as the absence of detectable serum HCV RNA at treatment week 48. Sustained virologic response (SVR) was defined as the absence of detectable serum HCV RNA 24 weeks after treatment was discontinued. Factors affecting treatment outcome were determined using correlation analyses. RESULTS: Data from the files of 17 patients (12 men, 5 women; mean [SD] age, 48 [2] years) were analyzed. EVR was achieved in 7 patients; however, viral breakthrough occurred in 2 of these patients during the treatment period, and 5 of these patients discontinued treatment because of severe treatment-related AEs (depression [1 patient] and neutropenia [4]). Seven patients achieved ETR, but HCV infection relapsed during the follow-up period. Three (18%) patients achieved SVR. Data concerning previous patterns of response to IFN + RBV therapy were available in 10 patients. Of these, 3 of 6 patients who had experienced relapse with the previous treatment achieved SVR with peg-IFN + RBV; neither of the 2 patients with nonresponse to the previous treatment achieved SVR. Major determinants of failure to reach SVR in these patients included previous nonresponder pattern, noncompliance with the therapy, and advanced-stage liver fibrosis. Tolerability was similar to that with the previous treatment. CONCLUSIONS: In this study in patients with chronic HCV genotype lb infectionand a history of relapse or nonresponse to standard IFN + RSV treatment, treatment with peg-IFN + RBV achieved an SVR rate of 18%. Further research is needed to determine the role of peg-IFN + RBV in the re-treatment of HCV infection.

16.
Curr Ther Res Clin Exp ; 66(3): 247-53, 2005 May.
Artículo en Inglés | MEDLINE | ID: mdl-24764593

RESUMEN

BACKGROUND: Isolated thrombocytopenia is a common manifestation of hepatitis C virus (HCV) infection. There is no established treatment modality for this condition. The efficacy of standard interferon (IFN) monotherapy has been reported in some studies. The major disadvantage of this treatment is the high rate of recurrence due to viral breakthrough during the first 12 weeks of treatment. Pegylated IFNs are now the standard regimen for chronic hepatic disease due to HCV infection. However, due to a lack of evidence, pegylated IFNs are not widely used for HCV-related isolated thrombocytopenia. OBJECTIVE: The aim of this report was to present the case of a male patientwith severe symptomatic thrombocytopenia due to HCV infection. METHODS: Thrombocytopenia was treated with pegylated IFN plus ribavirin. RESULTS: Although standard IFN monotherapy failed to achieve virologic and hematologic improvement, therapy with pegylated IFN alfa-2a plus ribavirin was associated with both virologic and hematologic improvement without any significant adverse effects. CONCLUSIONS: Pegylated IFN plus ribavirin was effective in this patient for thetreatment of HCV-related thrombocytopenia. However, further research is needed to define the response rate in different patient populations.

17.
Turk J Gastroenterol ; 26(2): 140-4, 2015 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-25835112

RESUMEN

BACKGROUND/AIMS: Dyssynergic defecation is a common health problem affecting the quality of life of patients adversely. We aimed to evaluate the impact of biofeedback therapy on the quality of life of constipated patients due to dyssynergic defecation. MATERIALS AND METHODS: Constipated patients due to dyssynergic defecation were enrolled to the study. Patients having secondary causes of constipation and who didn't fulfill the eligible criteria were excluded. All the patients underwent three to ten sessions each of which was thirty minutes biofeedback therapy under the supervision of a trained nurse. After one month the patients were assessed for the control. The impact of biofeedback therapy on the quality of life of patients having dyssynergic defecation was assessed using the validated Medical Outcomes Study Short Form-36 (SF-36) questionnaire before and one month after therapy. RESULTS: Thirty-two patients (20 female 62.5%, 12 male 37.5% and mean age 48 (18-72) underwent three to ten sessions biofeedback therapy. Post-therapy improvements of subscores of SF-36 consists of eight domains were all statistically significant when we compared with the pre-therapy values. CONCLUSION: This study showed not only the effectiveness of biofeedback as a therapy modality for constipation but also its impact on the improvement of QOL of constipated patients due to dyssynergic defecation. Patients with chronic constipation not improved by dietary fiber and laxatives should be referred to specialized centers that have facilities for further anorectal physiological assessments.


Asunto(s)
Biorretroalimentación Psicológica/métodos , Estreñimiento/psicología , Estreñimiento/terapia , Defecación , Calidad de Vida/psicología , Adolescente , Adulto , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , Resultado del Tratamiento , Adulto Joven
18.
Turk J Gastroenterol ; 26(1): 53-5, 2015 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-25698272

RESUMEN

Small-cell lung carcinoma represents a group of highly malignant tumors characterized by early and widespread metastais even at the time of diagnosis. However, the pancreas is a relatively infrequent site of metastasis by this neoplasm. A 57-year-old patient was admitted with an intense cough and complaints of abdominal discomfort. A chest X-Ray showed no evidence of lung mass but did show signs of lymphadenopathy. In addition, there was little evidence for malignancy based on a transbronchial needle aspiration. In contrast, there was a mass in the head portion of the pancreas. We diagnosed a case of small-cell lung carcinoma metastasis in the pancreas by using an endoscopic ultrasound-guided fine-needle aspiration biopsy. This case demonstrates that endoscopic ultrasound-guided fine-needle aspiration biopsy is an important tool in the diagnosis of metastatic pancreatic neoplasms.


Asunto(s)
Neoplasias Pulmonares/patología , Neoplasias Pancreáticas/secundario , Carcinoma Pulmonar de Células Pequeñas/secundario , Biopsia por Aspiración con Aguja Fina Guiada por Ultrasonido Endoscópico , Humanos , Masculino , Persona de Mediana Edad , Neoplasias Pancreáticas/diagnóstico por imagen , Carcinoma Pulmonar de Células Pequeñas/diagnóstico por imagen
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