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1.
Acta cir. bras ; 24(2): 98-106, Mar.-Apr. 2009. ilus, graf, tab
Article in English | LILACS | ID: lil-511322

ABSTRACT

BACKGROUND: Bacterial translocation occurs in preseptic conditions such as intestinal obstruction through unclear mechanism. The C-reactive protein is an acute phase reactant and a marker of ischemia. METHODS: 45 albino male rats were divided into 3 groups each 15 rats. GI control, GII simple intestinal-obstruction and GIII strangulated obstruction. Outcome measures were: (1) Bacteriologic count and typing for intestinal contents, intestinal wall, liver, mesenteric lymph nodes and blood (cardiac and portal) (2) Histopathologic: mucosal injury score, inflammatory cell infiltrate in the wall, MLN, liver, (3) Biochemical: serum CRP, IL-10, mucosal stress pattern (glutathione peroxidase-malonyldialdhyde tissue levels). RESULTS: (1) Intestinal obstruction associates with BT precursors (Bact-overgrowth, mucosal-acidosis, immuno-incomptence), (2) Bacterial translocation (frequency and density) was found higher in strangulated I.O, that was mainly enteric (aerobic and anaerobic) and mostly E.coli, (3) The pathogen commonality supports the gut origin hypothesis but the systemic inflammatory response goes with the cytokine generating one. (4) The CRP median values for GI, II, III were 0.5, 6.9, 8.5 mg/L, for BT +ve 8 mg/L and 0.75 mg/L for BT -ve rats. CONCLUSION: Bacterial translocation occurs bi-directional (systemic-portal) in intestinal obstruction and the resultant inflammatory response pathogenesis is mostly 3 hit model. The CRP is a non selective marker of suspected I.O cases. However, it is a reliable marker of BT, BT density and vascular compromise during I.O.


OBJETIVO: Translocação bacteriana ocorre em condições pré-sépticas como na obstrução intestinal por mecanismo não esclarecido. A proteína C-reativa é um marcador de ischemia em fase aguda. A proposição é investigar os possíveis efeitos da obstrução intestinal no equilíbrio ecológico microbiano. MÉTODOS: 45 ratos machos albinos foram distribuídos em três grupos de 15 ratos. GI controle, GII obstrução intestinal simples e GIII obstrução estrangulada. As medidas adotadas foram: (1) Contagem bacteriológica do conteúdo intestinal, parede intestinal, fígado, linfonodos mesentéricos e sangue (coração e portal) (2) Avaliação histopatológica da lesão da mucosa, infiltrado celular inflamatório da parede, linfonodos mesentéricos, fígado, (3) Avaliação bioquímica. RESULTADOS: (1) Obstrução intestinal está associada a precursora translocação bacteriana (crescimento bacteriano, acidose da mucosa, imuno-incompetência), (2) Translocação bacteriana (freqüência e densidade) foi maior na obstrução intestinal estrangulada, principalmente entérica (aeróbios e anaeróbios), sobretudo E.coli, (3) A ocorrência comum é de origem intestinal. CONCLUSÃO: A translocação bacteriana na obstrução intestinal é bi-direcional (sistêmica e portal) A proteina C-reativa não é um marcador seletivo na suspeita de obstrução intestinal. Contudo é marcador confiável da translocação bacteriana, na densidade e comprometimento durante a obstrução intestinal.


Subject(s)
Animals , Male , Rats , Bacterial Translocation , C-Reactive Protein/analysis , Intestinal Obstruction/microbiology , Intestines/blood supply , Ischemia/microbiology , Biomarkers/analysis , Disease Models, Animal , Inflammation/pathology , Intestinal Mucosa/blood supply , Intestinal Mucosa/microbiology , Intestinal Obstruction/pathology , Intestines/microbiology , Ischemia/pathology
2.
Rev. med. nucl. Alasbimn j ; 8(33)julio 2006. ilus
Article in English | LILACS | ID: lil-444101

ABSTRACT

Patient 28 years old has continued to have a persistent fever (39.2°C), despite ten days treatment by specific antibiotics for bacterial endocarditis associated to a recent claudication of the right lower leg. The persistent fever has motivated a 99mTc-labelled monoclonal anti granulocyte scan which has showed an important uptake in the myocardial septum, and other infection locations in temporal bone and in right tibial arteries. Two days after, a nanocolloids-99mTc WBS showed no uptake in the heart area, a total absence of uptake of the nanocolloids in the bone marrow of right tibia b and cranial SPECT views confirmed the infectious site in the right temporal bone. New antibiotic strategy was adopted successfully associated with surgical amputation of the right lower leg.


Subject(s)
Male , Adult , Humans , Heart , Skull , Endocarditis, Bacterial , Endocarditis, Bacterial/complications , Leg Bones , Ischemia/microbiology , Radioimmunodetection , Antibodies, Monoclonal , Technetium Compounds , Heart/microbiology , Skull/microbiology , Granulocytes , Leg Bones/microbiology
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