Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: UMLS:C0348321 (Haemophilus)
 15,372 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Intravenous administration of sulbactam/ampicillin (SBT/ABPC) was evaluated in pediatric patients. The serum half-lives of both ABPC and SBT were approximately 1 hour following the intravenous injection or intravenous drip infusion of 20-35 mg/kg, and 30-50% of ABPC and 30-70% of SBT were recovered in the urine 6 hours. Cerebrospinal fluid concentrations of ABPC and SBT were 0.76 and 0.68 micrograms/ml, respectively, at 1 hour after intravenous drip infusion of the 58 mg/kg, and concentration ratios of the drugs in cerebrospinal fluid/serum were 6.39 and 5.71%, respectively. Thirty-four pediatric patients were treated with intravenous drip infusion of SBT/ABPC in doses ranging from 54 to 150 mg/kg divided into 3 times a day. The rate of clinical efficacy was 93.5% and the bacterial elimination rate was 92.3%. The synergistic activity of sulbactam with ampicillin was demonstrated against beta-lactamase-producing Staphylococcus aureus and Haemophilus influenzae isolated from patients in the present study. The side effects of SBT/ABPC were observed in 6 patients (5 diarrheas; 1 diarrhea with vomiting) out of 34 patients administered. Eosinophilia (2 patients) and a slight elevation of GOT (1 patient), GPT and LDH (1 patient) were observed. The tolerance to the therapy, however, was good.
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PMID:[Clinical and pharmacokinetic studies on intravenous administration of sulbactam/ampicillin in pediatrics]. 274 46

Treatment of bacterial meningitis depends on its severity. The signs, symptoms, and laboratory values of 51 patients with bacterial meningitis admitting to the Department of Pediatrics at Sendai City Hospital from January 1985 to December 1994 were analyzed in order to evaluate their prognostic value. The overall mortality rate was 3.9%. The incidence of neurological deficit on discharge was 31.4%. According to their prognoses, patients were divided into two groups: those who recovered with no detectable disabilities (good prognosis) and those who died or were left with neurological deficits (poor prognosis). An analysis of these groups using Fisher's exact probability test revealed that the following risk factors were associated with poor prognosis: 1) duration of fever (including the periods of relapse) for more than 10 days ; 2) abnormal findings on brain imaging, such as cerebral infarction, cerebral hemorrhage, cerebral abscess and subdural effusion: 3 initial serum CRP value above 16 mg/dl; 4) initial CSF glucose value below 12 mg/dl; and 5) initial CSF LDH value above 220 IU/l. Streptococcus pneumoniae infection carried the worst prognosis: the causal organism of both the two fetal cases was S. pneumoniae. The incidence of poor prognosis was also high in S. pneumoniae meningitis (60.0%), compared to those by Hemophilus influenzae (46.7%) and group B streptococcus (25.0%). In the cases in which causal agents were not detected, this incidence was as low as 10 percent, showing significant difference from cases in which causal agents were identified. In order to improve the prognosis of bacterial meningitis, factors associated with poor prognosis should be recognized at early stages of the illness.
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PMID:[Factors associated with the prognosis of bacterial meningitis in children]. 924 88

We studied retrospectively 132 episodes of infectious pneumonias in 89 patients examined from 1990 to 1995. Pneumocystis carinii was found to be the most common cause of pneumonia (33 patients). The other causes were: Streptococcus pneumoniae (15), Mycobacterium tuberculosis (14), Pseudomonas aeruginosa (8), Staphylococcus aureus (5), Cytomegalovirus (4), Haemophilus influentiae (4), Mycobacterium avium intracellulare (2), Klebsiella pneumoniae (2), E. coli (2), Serratia marcescens (1). No etiologic agent was found in 40 cases. We stress the need of a more frequent use of invasive diagnostic procedures in the study of focal lung consolidations because this radiologic sign is highly aspecific and may be caused by too many different pathogenic agents, needing different therapies-i.e., Streptococcus pneumoniae (15 cases), Pseudomonas aeruginosa (8), Staphylococcus aureus (5), Klebsiella pneumoniae (2), Escherichia coli (2), Pneumocystis carinii, Serratia marcescens and Haemophilus influentiae (1). Since there is an increase in mortality among patients treated with empiric antibiotic therapy, we stress the need of the routinary use of bronchoalveolar lavage in HIV+ patients with lung consolidation to perform specific therapy. Moreover, Pneumocystis carinii is by far the most frequent cause of diffuse interstitial infiltrates, and PCP has very suggestive clinical (dyspnea), radiologic (diffuse perihilar interstitial infiltrates; ground glass opacities; pneumatoceles) and laboratory (CD3+CD4 < 200/mcl; LDH > 600 UI/dl; PO2 < 70 mmHg) patterns, always related to the discovery of Pneumocystis carinii in escreatum. Thus, we decided to treat 15 patients with specific therapy for Pneumocystis carinii pneumonia with the above diagnostic algorithm, obtaining in all of them complete clinical and radiologic recovery. To conclude, in critical patients, invasive procedures should be performed only in the cases in which PCP is clinically improbable.
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PMID:[Diagnostic imaging and therapeutic implications in lung infections in patients with HIV-1 infection]. 928 Sep 34

In the present study the effects of a 3-day inhalation exposure to model compounds for ambient particulate matter were investigated: ammonium bisulfate, ammonium ferrosulfate, and ammonium nitrate, all components of the secondary aerosol fraction of ambient particulate matter (PM), and carbon black (CB, model aerosol for primary PM). The objective of this study was to test the hypothesis that secondary model aerosols exert acute pulmonary adverse effects in rats, and that rats with pulmonary hypertension (PH), induced by monocrotaline (MCT), are more sensitive to these components than normal healthy animals. An additional aim was to test the hypothesis that fine particles exert more effects than ultrafines. Healthy and PH rats were exposed to ultrafine (mass median diameter [MMD] approximate, equals 0.07-0.10 microm; 4 x 10(5) particles/cm(3)) and fine (MMD approximate, equals 0.57-0.64 micro;m; 9 x 10(3) particles/cm(3)) ammonium aerosols during 4 h/day for 3 consecutive days. The mean mass concentrations ranged from 70 to 420 microg/m(3), respectively, for ultrafine ammonium bisulfate, nitrate, and ferrosulfate and from 275 to 410 microg/m(3) for fine-mode aerosols. In an additional experiment, simultaneous exposure to a fine CB aerosol (0.6 microm; 2-9 mg/m(3)) and ammonium nitrate (0.4-18 mg/m(3)) was performed. Bronchoalveolar lavage fluid (BALF) analysis and histopathological examination were performed on animals sacrificed 1 day after the last exposure. Histopathology of the lungs did not reveal test atmosphere-related abnormalities in either healthy or PH rats exposed to the ammonium salts, or to a combination of CB + nitrate. Alveolar macrophages in rats exposed to CB only revealed the presence of black material in their cytoplasm. There were no signs of cytotoxicity due to the aerosol exposures (as measured with lactate dehydrogenase [LDH], protein, and albumin contents in BALF). Macrophages were not activated after MCT treatment or the test atmospheres, since no changes were observed in N-acetyl glucosaminidase (NAG). Cell differentiation profiles were inconsistent, partly caused by an already present infection with Haemophilus sp. However, we believe that the test atmospheres did not affect cell differentiation or total cell counts. The results show that at exposure levels of ammonium salts at least one order of magnitude higher than ambient levels, marked adverse health effects were absent in both healthy and PH rats.
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PMID:Pulmonary effects of ultrafine and fine ammonium salts aerosols in healthy and monocrotaline-treated rats following short-term exposure. 1245 87

Microorganisms have an important role in tumorgenesis by the induction of inflammation and by a direct impact on tumor cells. Chronic obstructive pulmonary disease (COPD) is associated with an increased risk for lung cancer and microbial colonization. We asked whether bacterial pathogens act as tumor promoters during CS-induced pulmonary inflammation. In a metastatic lung cancer (LC) model, Lewis lung carcinoma (LLC) cells were injected in mice to initiate the growth of tumors in the lung. Exposure to the combination of cigarette smoke (CS) and nontypeable Haemophilus influenzae (NTHi) synergistically increased metastatic growth. Lung levels of albumin and LDH, translocation of bacterial factors into tumor tissue, tumor inflammation, and tumor proliferation were significantly increased in mice exposed to CS in combination with NTHi. Bacterial pathogens increased the proliferation of cultured LLC cells and human cancer cell lines. Metastatic growth induced by the exposure to CS in combination with NTHi was reduced in mice deficient for IL-17. Our data provide evidence that CS-induced loss of pulmonary barrier integrity allows bacterial factors to translocate into tumor tissue and to regulate tumor-associated inflammation and tumor proliferation. Translocation of bacterial factors in tumor tissue links CS-induced inflammation with tumor proliferation.
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PMID:Cigarette smoke-induced disruption of pulmonary barrier and bacterial translocation drive tumor-associated inflammation and growth. 2620 73