73 research outputs found

    The influence of diabetes mellitus on the spectrum of uropathogens and the antimicrobial resistance in elderly adult patients with urinary tract infection

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    BACKGROUND: The role of Diabetes mellitus (DM) in the etiology and in the antimicrobial resistance of uropathogens in patients with urinary tract infection has not been well clarified. For this reason we have evaluated the spectrum of uropathogens and the profile of antibiotic resistance in both diabetic and non diabetic patients with asymptomatic urinary tract infection (UTI). METHODS: Urinary isolates and their patterns of susceptibility to the antimicrobials were evaluated in 346 diabetics (229 females and 117 males) and 975 non diabetics (679 females and 296 males) who were screened for significant bacteriuria (≥10(5 )CFU/mL urine). The mean age of diabetic and non diabetic patients was respectively 73.7 yrs ± 15 S.D. and 72.7 ± 24 (p = NS). RESULTS: Most of our patients had asymptomatic UTI. The most frequent causative organisms of bacteriuria in females with and without DM were respectively : E. coli 54.1% vs 58.2% (p = NS), Enterococcus spp 8.3% vs 6.5% (p = NS), Pseudomonas spp 3.9 vs 4.7% (p = NS). The most frequent organisms in diabetic and non diabetic males were respectively E. coli 32.5% vs 31.4% (p = NS), Enterococcus spp 9.4% vs 14.5% (p = NS), Pseudomonas spp 8.5% vs 17.2% (p = <0.02). A similar isolation rate of E. coli, Enterococcus spp and Pseudomonas spp was also observed in patients with indwelling bladder catheter with and without DM. No significant differences in resistance rates to ampicillin, nitrofurantoin, cotrimoxazole and ciprofloxacin of E. coli and Enteroccus spp were observed between diabetic and non diabetic patients. CONCLUSION: In our series of patients with asymptomatic UTI (mostly hospital acquired), diabetes mellitus per se does not seem to influence the isolation rate of different uropathogens and their susceptibility patterns to antimicrobials

    Disseminated Histoplasmosis and Tuberculosis in a Patient with HIV Infection

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    Histoplasmosis is a very rare disease in Korea. Clinical manifestations are very similar to those of tuberculosis. This is the first case report of combined disseminated histoplasmosis and tuberculosis in a patient with HIV infection in Korea. A 42-year-old Korean with Acquired Immunodeficiency Syndrome (AIDS) was diagnosed with tuberculosis. He had lived in Guatemala for the past five years. Upon diagnosis of disseminated tuberculosis with HIV infection, he was treated with anti-tuberculosis medications and anti-retroviral agents. Fever, weakness, hepatosplenomegaly and pancytopenia were persistent despite treatment. The patient's history of living in Guatemala caused us to seek opportunistic infectious organisms other than tuberculosis. Bone marrow aspiration and biopsy were performed and the result revealed numerous intracellular organisms consistent with Histoplasma capsulatum; therefore, the diagnosis of disseminated histoplasmosis was made

    Le traitement des tuberculoses miliaires par les hormones cortico-surrénaliennes

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    Come il Ticino venne in potere degli Svizzeri

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    Eligio Pomett

    Dyslipidamie bei Diabetes mellitus : Bedeutung, Diagnostik und Behandlung

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    Dyslipidemias are frequent in diabetic subjects: they increase the risk for atherosclerosis, in addition to the risk of diabetes mellitus per se. The pathogenesis of dyslipidemias differs between type I and type II diabetes: untreated type I diabetic subjects demonstrate frequently increased triglyceride concentrations due to diminished removal of triglyceride-containing particles, as a result of diminished activity of lipoprotein lipase. In addition, more triglycerides are produced due to increased lipolysis and increased free fatty acid supply to the liver. Type II diabetic subjects demonstrate very low density lipoprotein (VLDL) over-production due to obesity, insulin resistance and caloric overconsumption. In addition, triglyceride removal may be diminished due to diminished lipoprotein lipase activity when diabetes mellitus is poorly controlled. In addition, high density lipoprotein (HDL) is frequently lowered. During decompensation low density lipoprotein (LDL) concentrations may also increase. LDL particle composition is frequently abnormal. A severe dyslipidemia in diabetes mellitus is frequently a combined effect of diabetes mellitus and a congenital lipoprotein abnormality. The evaluation and treatment of dyslipidemias in diabetic subjects should be performed similarly to non-diabetics according to the guidelines published recently by the Working Group `Lipids` of the Swiss Foundation of Cardiology. Additional accents in diabetic subjects are necessary. It is recommended that serum cholesterol, triglycerides and HDL are determined in every patient when diabetes mellitus is diagnosed. If serum cholesterol is greater than 6.5 mmol/l and the cholesterol/HDL-ratio is greater 6.5, dietary treatment should be reinforced; if its effect is insufficient, drug therapy should be considered.(ABSTRACT TRUNCATED AT 250 WORDS

    Response of monocyte iron regulatory protein activity to inflammation: abnormal behavior in genetic hemochromatosis

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    In genetic hemochromatosis (GH), iron overload affects mainly parenchymal cells, whereas little iron is found in reticuloendothelial (RE) cells. We previously found that RE cells from GH patients had an inappropriately high activity of iron regulatory protein (IRP), the key regulator of intracellular iron homeostasis. Elevated IRP should reflect a reduction of the iron pool, possibly because of a failure to retain iron. A defect in iron handling by RE cells that results in a lack of feedback regulation of intestinal absorption might be the basic abnormality in GH. To further investigate the capacity of iron retention in RE cells of GH patients, we used inflammation as a model system as it is characterized by a block of iron release from macrophages. We analyzed the iron status of RE cells by assaying IRP activity and ferritin content after 4, 8, and 24 hours of incubation with lipopolysaccharide (LPS) and interferon-\u3b3 (IFN-\u3b3). RNA- bandshift assays showed that in monocytes and macrophages from 16 control subjects, IRP activity was transiently elevated 4 hours after treatment with LPS and IFN-\u3b3 but remarkably downregulated thereafter. Treatment with NO donors produced the same effects whereas an inducible Nitric Oxide Synthase (iNOS) inhibitor prevented them, which suggests that the NO pathway was involved. Decreased IRP activity was also found in monocytes from eight patients with inflammation. Interestingly, no late decrease of IRP activity was detected in cytokine-treated RE cells from 12 GH patients. Ferritin content was increased 24 hours after treatment in monocytes from normal subjects but not in monocytes from GH patients. The lack of downregulation of IRP activity under inflammatory conditions seems to confirm that the control of iron release from RE cells is defective in GH
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