Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 15 de 15
Filter
1.
Article in English | IMSEAR | ID: sea-39074

ABSTRACT

The aim of the study was to demonstrate the sensitivity, specificity and accuracy of gastric juice urease test and brushing-urease test compared to the biopsy-urease test for Helicobacter pylori (H. pylori) detection. For each patient, two milliliters of gastric juice was collected and one milliliter in the supernatant was tested for rapid urease reactions. One gastric mucus brushing and two biopsies were taken from the body and the antrum. The brushing specimens were tested for rapid urease reaction by shaking the brush into the urea broth. The gold standards for diagnosing of H. pylori are positive H. pylori upon specimen culture or positive identification of H. pylori from polymerase chain reaction (PCR) assay using primer for vac A gene. Forty patients were enrolled in the study including ten patients with gastric ulcer, six patients with duodenal ulcer and twenty four patients with non-ulcer dyspepsia. Brushing-urease test and biopsy-urease test were not different sensitivity (87.50% vs 93.20%), specificity (100% vs 100%) and accuracy (90.25% vs 95.50%). The gastric juice urease test had a sensitivity of 65.25 per cent, specificity of 100 per cent and accuracy of 75 per cent for detecting of H. pylori infection. In conclusion, gastric juice urease test had low sensitivity in the diagnosis of H. pylori infection. Brushing-urease test is as accurate as biopsy-urease test in detecting H. pylori infection. However, the brushing method had lower gastric tissue injury than the biopsy and so should be used for detecting H. pylori infection in patients with coagulopathy.


Subject(s)
Adult , Aged , Biopsy, Needle , Culture Media , Duodenal Ulcer/microbiology , Dyspepsia/microbiology , Female , Gastric Juice/microbiology , Gastric Mucosa/microbiology , Gastroscopy , Helicobacter Infections/diagnosis , Helicobacter pylori/isolation & purification , Humans , Male , Middle Aged , Polymerase Chain Reaction , Prospective Studies , Sensitivity and Specificity , Stomach Ulcer/microbiology , Urease/analysis
2.
Article in English | IMSEAR | ID: sea-45300

ABSTRACT

Helicobacter pylori plays a major role in chronic gastritis and peptic ulcer. In addition, it has been shown to be associated with gastric carcinoma. In this study, the authors compared the detection of IgG antibodies specific to H. pylori by enzyme-immunoassay with culture, histology and a CLO test as tools for diagnosis of H. pylori infection. If the criteria that patients will be considered as H. pylori infected only when their samples are positive by culture or CLO test and histology were used, the sensitivity and specificity of detecting IgG in sera were 96.84 and 72.04 per cent respectively. The use of serological test will be useful as a screening test for H. pylori infection without the need of endoscopy. The authors also performed the assay for detecting IgA antibodies in saliva and gastric juice. The sensitivity and specificity of IgA detection in saliva were 26.79 per oent and 75.00 per cent. As for the assay in gastric juice, although the specificity was as high as 91.67 per cent, the sensitivity is very low (22.22%).


Subject(s)
Adolescent , Adult , Aged , Aged, 80 and over , Antibodies, Anti-Idiotypic/analysis , Antibodies, Bacterial/blood , Cohort Studies , Female , Gastric Juice/microbiology , Helicobacter Infections/diagnosis , Helicobacter pylori/immunology , Humans , Immunoglobulin A/analysis , Immunoglobulin G/analysis , Male , Middle Aged , Peptic Ulcer/microbiology , Predictive Value of Tests , Retrospective Studies , Saliva/microbiology , Sensitivity and Specificity , Serologic Tests , Urease/analysis
3.
Rev. Fac. Med. UNAM ; 41(6): 236-40, nov.-dic. 1998. ilus
Article in Spanish | LILACS | ID: lil-234044

ABSTRACT

El objetivo del presente trabajo es indagar, si hay crecimiento bacteriano y qué bacterias se encuentran en el estómago, después de la administración de bloqueadores H2, a diferentes dosis. Se formaron cuatro grupos de 10 pacientes cada uno en forma aleatoria en un estudio prospectivo, experimental, transverasal, comparativo y abierto. Se incluyeron pacientes menores de 50 años, sin antecedentes de enfermedad úlcero-péptica, y que fueron sometidos a cirugía electiva (colecistectomía), el grupo IV se formó con pacientes de la Unidad de Cuidados Intensivos, a los cuales se les administró bloqueadores H2 como parte de su terapéutica, y con diagnóstico de sepsis severa. El grupo I se tomó como control, a los grupos II y III se les administró cimetidina a dosis de 200 mg y 40 mg respectivamente, por vía endovenosa, 8 y 2 horas previas a la cirugía. A todos los grupos se les tomó muestra de jugo gástrico. Para determinar pH, y realizar cultivo del mismo para gérmenes aerobios. El grupo I presentó desarrollo en el 20 por ciento de casos con pH medio de 2.1; los grupos II y III desarrollaron gérmenes en el 100 por ciento de casos y pH promedio de 7.1 y 7.2 respectivamente, el grupo IV desarrolló gérmenes en el 70 por ciento de casos y pH promedio 3.4. A partir de un pH de 4 se observa mayor crecimiento bacteriano. El análisis estadístico fue la t de Student la cual mostró r=0.4 y P=< 0.05. Se puede concluir que los bloqueadores H2, a dosis terapéuticas elevan el pH gástrico en el paciente sano, no así en el paciente séptico. Este incremento produce desarrollo bacteriano tanto de gérmenes aerobios como anaerobios. En este estudio, la administración de bloqueadores H2 en pacientes que se operaron en forma electiva, no produjo sepsis postoperatoria. La administración de antibióticos en el paciente grave no reduce el crecimiento bacteriano gástrico aerobio, sí el anaerobio


Subject(s)
Humans , Male , Female , Adult , Bacteria, Aerobic/drug effects , Bacteria, Aerobic/growth & development , Bacteria, Anaerobic/drug effects , Bacteria, Anaerobic/growth & development , Cimetidine/administration & dosage , Hydrogen-Ion Concentration , Injections, Intravenous , Gastric Juice , Gastric Juice/microbiology , Gastric Juice/chemistry , Gastric Mucosa , Gastric Mucosa/microbiology
4.
Acta gastroenterol. latinoam ; 28(5): 335-6, dic. 1998.
Article in Spanish | LILACS | ID: lil-226080

ABSTRACT

Mediante técnicas de biología molecular (PCR), hemos podido detectar la presencia de HP en el jugo gástrico en la tercera parte (10/31 pacientes - 32,3 por ciento) de los infectados con la bacteria, según determinación histológica. La demostración de la presencia de HP en jugo gástrico permitirá a traves de nuevos estudios mejorar los conocimientos acerca de los mecanismos de diseminación y complementar la metodología diagnóstica.


Subject(s)
Female , Humans , Aged , Middle Aged , Adult , Gastric Juice/microbiology , Gastric Mucosa/microbiology , Helicobacter pylori/isolation & purification , Polymerase Chain Reaction , Azure Stains , Electrophoresis, Agar Gel , Gastric Mucosa/pathology , Helicobacter pylori/genetics , Sensitivity and Specificity
6.
J. bras. med ; 72(5): 74, 76, 78, passim, maio 1997. tab
Article in Portuguese | LILACS | ID: lil-196728

ABSTRACT

Foram estudados 34 portadores de litíase vesicular. Verificou-se a prevalência do refluxo duodenogástrico e da colonizaçäo pelo Helicobacter pylori no antro gástrico, antes e após a colecistectomia. No somatório dos casos do pré e pós-operatório foi determinado se a presença de bile refluída para o estômago portador do Helicobacter pylori modificava a prevalência deste no antro gástrico. Concluiu-se que, quando havia bile no estômago, houve diminuiçäo significante na prevalência do Helicobacter pylori no antro gástrico (p<0,05).


Subject(s)
Humans , Male , Female , Adolescent , Middle Aged , Helicobacter pylori/isolation & purification , Gastric Mucosa/microbiology , Duodenogastric Reflux/microbiology , Gastric Juice/microbiology , Bilirubin/analysis , Urinary Bladder Calculi/surgery , Chi-Square Distribution , Cholecystectomy , Gastric Mucosa/chemistry
7.
Rev. Asoc. Med. Crit. Ter. Intensiva ; 10(3): 99-104, mayo-jun. 1996. tab
Article in Spanish | LILACS | ID: lil-180450

ABSTRACT

Introducción. La profilaxis de las úlceras de estrés con antiácidos y bloqueadores H2 produce colonización gástrica en los pacientes en estado crítico. Objetivo Comparar los efectos entre ranitidina y sucralfato sobre el pH gástrico y colonización intragástrica. Pacientes y métodos. Estudiamos prospectivamente 64 pacientes que ingresaron a una UCI. Se compararon los efectos entre el tratamiento con ranitidina (32 pacientes, grupo A) y sucralfato (32 pacientes, grupo B) durante 72 horas. Resultados. El pH gástrico fue a las 0, 24, 48 y 72 horas después del tratamiento 2.9 ñ 0.68; 4.3 ñ 0.73, 4.1 ñ 0.68, 4.5 ñ 0.86 y 2.75 ñ 0.61, 6.16 ñ 0.97, 6.5 ñ 0.87, 6.56 ñ 0.79, respectivamente entre los grupos A y B (p < 0.05). La colonización gástrica fue más alta en el grupo B, once pacientes, que en el grupo A, tres pacientes (p= 0.034). Conclusión. La ranitidina incrementa el riesgo de colonización bacteriana del estómago en el paciente crítico


Subject(s)
Humans , Male , Female , Middle Aged , Hydrogen-Ion Concentration , Gastric Juice , Gastric Juice/microbiology , Ranitidine/administration & dosage , Sucralfate/administration & dosage , Stomach Ulcer/microbiology , Stomach Ulcer/drug therapy
9.
Alexandria Journal of Pharmaceutical Sciences. 1991; 5 (1): 24-26
in English | IMEMR | ID: emr-18836

ABSTRACT

The viability of B. subtilis, E. coli, Ps. aeruginosa and C. albicans in 0.5% sterile solutions of diastase, pancreatin, papain, pepsin and trypsin during a period of 7 days was followed by the viable count technique. Marked growth of these organisms took place, though the extent of which varied according to the enzyme. At 4C, the enzymes suffered practically no alteration in their amylolytic or proteolytic activities. Storage at 25C resulted in significant reductions of amylolytic activity [0.3-89.7%] and proteolytic activity [0-77%], depending on the enzyme-organism system. B. subtilis and C. albicans exerted, in general, the highest inactivation of the enzymes. On the other h and, Ps. aeruginosa produced little effect


Subject(s)
Gastric Juice/microbiology
10.
ABCD (São Paulo, Impr.) ; 5(3): 63-6, jul.-set. 1990. tab
Article in English | LILACS | ID: lil-140057

ABSTRACT

O conteudo normal de bacterias no estomago e menor que 10ü/ml de suco gastrico. A ausencia de bacterias na cavidade gastrica, muito frequente, e principalmente devida a secrecao acida e a motilidade do orgao. Varias situacoes podem comprometer esses mecanismos de defesa e levar a colonizacao bacteriana, com alta incidencia de complicacoes infecciosas pos-operatorias. Para avaliar a alteracao da microflora gastrica, estudaram-se 25 pacientes, 19 com doenca gastroduodenal e seis controles, divididos em quatro grupos distintos, de acordo com a afeccao de base. Dos portadores de doenca gastroduodenal, 18 (94,73 por cento) apresentaram cultura positiva para aerobios e seis (3,57 por cento), para anaerobios. Cinco pacientes (26,31 por cento) tiveram cultura positiva para Candida sp e cinco outros para S. fecalis. A principal contagem bacteriologica foi de 1,2x10 elevado a seis CFU/ml de suco gastrico, e de 1,4x10 elevado a um CFU/ml de suco gastrico, para anaerobios. As bacterias mais comumente isoladas foram E. coli, Enterobacter sp e Staphylococcus epidermidis.


Subject(s)
Humans , Male , Female , Adult , Bacteria/analysis , Gastric Juice/microbiology , Staphylococcus epidermidis/isolation & purification , Bacteria/pathogenicity , Duodenal Diseases , Escherichia coli/isolation & purification , Gastrointestinal Diseases , Stomach
11.
Journal of the Egyptian Society of Parasitology. 1990; 20 (2): 559-63
in English | IMEMR | ID: emr-16548

ABSTRACT

Acid content and bacterial flora were studied in the gastric juice of 30 patients with endemic hepatosplenomegaly and 10 normal controls. The acid content in the gastric juice was significantly low in the group of patients. Also the bacterial flora were present in larger number of patients [80%] opposite to [30%] in normal control group


Subject(s)
Gastric Juice/microbiology , Gastric Acidity Determination , Splenomegaly
12.
Cienc. méd. (San Miguel de Tucumán) ; 4(1): 40-5, ene.-feb. 1989. tab
Article in Spanish | LILACS | ID: lil-78113

ABSTRACT

Estudio abierto y prospectivo donde se evalúa el efecto bactericida del tripotásico-diccitrato bismutato, administrado en pacientes críticamente enfermos, con bloqueo H2 protector gástrico y en los que se demostró contaminación bacteriana gástrica. Los resultados muestran una efectividad del 100% sobre bacterais y aparente resistencia por parte de cándida albicans. La muestra es aún pequeña para una evaluación definitiva, más los resultados iniciales señalan una llamativa efectiviadad bactericida


Subject(s)
Adolescent , Adult , Middle Aged , Humans , Male , Female , Bismuth/pharmacology , Cimetidine/adverse effects , Gastric Juice/microbiology , Ranitidine/adverse effects , Escherichia coli/drug effects , Prospective Studies
14.
Alexandria Journal of Pediatrics. 1987; 1 (2): 177-185
in English | IMEMR | ID: emr-8339

ABSTRACT

The jejunal mucosa of 90% of well nourished children with enteral diarrhea [30 patients] showed definite histopathological changes which varied from mild to severe. The severity of mucosal changes was neither related to the causative organism or degree of dehydration. The jejunal mucosa of 13 marasmic children with enteral diarrhea showed moderate to severe changes while all kwashiorkor patients [7] with diarrhea showed severe changes. Lactase activity as well as fat absorption were positively correlated with the severity of the mucosal changes. Recovery of histopathological changes was slower in malnourished patients


Subject(s)
Humans , Male , Female , Jejunum/pathology , Histology , Microscopy , beta-Galactosidase/deficiency , Feces/microbiology , Child , Gastric Juice/microbiology , Follow-Up Studies
SELECTION OF CITATIONS
SEARCH DETAIL