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

In 75 patients with unexplained chronic purulent rhinosinusitis T cell mediated immunity to three micro-organisms frequently colonizing the human upper respiratory tract, viz. Haemophilus influenzae, streptococci and Candida albicans, was assessed. Delayed type hypersensitivity (DTH) skin test reactivity was measured in vivo, whereas the blastogenic responsiveness (lymphocyte transformation test; LTT) and lymphokine production (e.g. migration inhibition factor; MIF) of the lymphocytes upon antigen stimulation were measured in vitro. MIF was assayed with a recently developed test system using the human monocytoid cell-line U937 as indicator cells in agarose microdroplets. Two-thirds of the 75 patients tested showed a defective DTH response to one or more of the microbial antigens; this contrasted to the findings in 25 healthy subjects, of whom over 90% showed a positive DTH reaction to any of the three antigens. PHA skin tests were entirely normal in both patients and healthy controls. Microbial antigen-specific LTT responses fluctuated considerably in time from strongly positive to negative and vice versa in healthy individuals as well as in patients. In general however, blastogenic responses in patients were comparable to or even higher than those of healthy persons. In the MIF assay, lymphocytes of all healthy individuals tested showed production of MIF upon stimulation with all three antigens; this again contrasted to two-thirds of the patients, whose lymphocytes showed a defective MIF production. Fluctuations of MIF-production in time could not be established and a very good correlation existed between the data obtained in the MIF assay and those of the DTH skin tests. These results indicate that apart from skin testing, the MIF assay seems to be the most suitable parameter to assess defects in T cell reactivity towards microbial antigens. These defects exist in two-thirds of our patients suffering from chronic purulent rhinosinusitis.
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PMID:Parameters of T cell mediated immunity to commensal micro-organisms in patients with chronic purulent rhinosinusitis: a comparison between delayed type hypersensitivity skin test, lymphocyte transformation test and macrophage migration inhibition factor assay. 355 34

66 patients with predominantly community-acquired pneumonia were treated with cefotaxime. The group consisted of 45 males and 21 females, aged 56 to 90 years, 43 of the patients belonging to the age groups 65-80 years. Streptococcus pneumoniae was isolated in 21 of the 34 patients with gram-positive pneumonia, Staphylococcus aureus in six, Staphylococcus epidermidis in five and Streptococcus faecalis in two. Klebsiella pneumoniae was the predominant pathogen in gram-negative pneumonia (eight patients), followed by Enterobacter (n = 6), Pseudomonas aeruginosa (n = 5), Haemophilus influenzae (n = 4), Escherichia coli (n = 3), Serratia marcescens and Citrobacter (two cases each). The in vitro activity of cefotaxime against the isolates was compared to the activity of other beta-lactam antibiotics. Characteristically, the classical signs and symptoms of pneumonia were absent or discrete in some of the elderly patients. There was a delayed clearance of pulmonary infiltrates. 55 of 66 patients responded to cefotaxime within four weeks of treatment; the symptoms were aggravated or remained unchanged in seven patients. Patients with a delayed clinical response displayed decreased peripheral lymphocyte counts and T cell functions in PHA stimulation tests, as well as low immunoglobulin levels. A combination of cefotaxime and gamma-venin cleared the symptoms in some of these patients.
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PMID:Clinical evaluation of the effect of cefotaxime in senile pneumonia caused by gram-positive and gram-negative bacteria. 405 49

Delayed hypersensitivity (dh) skin test reactivity to a somatic antigen of Haemophilus influenzae was studied in 21 patients with unexplained, chronically relapsing, purulent upper respiratory tract infections. Only 2 showed a dh reactivity comparable to that of healthy controls. A majority--15 patients--had a defective dh response, whereas 4 showed exaggerated reactivity leading to necrosis of the test site and general feelings of malaise. Not only was the dh reactivity to somatic H. influenzae antigen affected, but also that to streptokinase/streptodornase and candidal antigen in most cases, though to a lesser extent. Skin test reactivity to the mitogen PHA was normal as were the dh skin test reactivities in 4 out of 5 control patients with mucous atopic rhinitis/sinusitis and 2 cases of nasal suppuration due to disturbed mucociliary transport. Delayed hypersensitivity skin test disorders were associated with elevated ratios of OKT4 + /OKT8 + peripheral lymphoid cells. In addition a high incidence of atopy and thyroid autoimmunity was evident in patients as well as in their first-degree relatives. A negative lymphocyte proliferative response to somatic H. influenzae antigen was found in 3 of our patients. These results suggest that unexplained, chronically relapsing upper respiratory tract infections might be based on restricted T-cell defects to H. influenzae, streptococcal, and candidal antigens. Such defects are reminiscent of the T-cell immune disorders to fungi playing a role in some cases of chronic mucocutaneous candidiasis.
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PMID:Abnormalities in cell-mediated immune functions to Haemophilus influenzae chronic purulent infections of the upper respiratory tract. 660 18

Young children and allogeneic hematopoietic cell transplantation (HCT) recipients respond poorly to polysaccharide antigens, rendering them susceptible to severe infections because of encapsulated bacteria. This study evaluated the responses of 127 HCT patients, median age 23.0 years, vaccinated with PNCRM7 and Haemophilus influenzae (HIB) conjugate, 2 conjugate vaccines highly immunogenic in healthy children. Median time to vaccination was 1.1 years after HCT. Sixty-two percent of patients responded to PNCRM7 (45 of 51 children, 34 of 76 adults, P < .001). Overall response to HIB was 86%, including 77% of PNCRM7 nonresponders. Although PNCRM7 response was adversely affected by older age (P < .001), individuals > or =50 years old responded significantly better if vaccinated following acquisition of specific minimal milestones of immune competence, CD4 >200/microL, IgG >500 mg/dL, PHA within 60% lower limit of normal (11 of 19 versus 0 of 8, P < .006). A similar trend was observed in patients with limited chronic graft-versus-host disease (cGVHD). In all patients, higher levels of circulating CD4(+)CD45RA cells correlated with improved PNCRM7 response. These data demonstrate that PNCRM7 is immunogenic in allogeneic HCT patients, including older adults, but suggest that vaccination at fixed intervals after HCT, irrespective of immune competence, may limit its effectiveness. Prospective, multicenter trials assessing the best strategy to administer this vaccine and its impact on pneumococcal infections following transplantation are warranted.
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PMID:Response to pneumococcal (PNCRM7) and haemophilus influenzae conjugate vaccines (HIB) in pediatric and adult recipients of an allogeneic hematopoietic cell transplantation (alloHCT). 1872 65