Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: UMLS:C0043167 (pertussis)
 19,595 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Emerging respiratory disease agents, increased antibiotic resistance, and the loss of effective vaccines threaten to increase the incidence of respiratory disease in military personnel. We examine six respiratory pathogens (adenoviruses, influenza viruses, Streptococcus pneumoniae, Streptococcus pyogenes, Mycoplasma pneumoniae, and Bordetella pertussis) and review the impact of the diseases they cause, past efforts to control these diseases in U.S. military personnel, as well as current treatment and surveillance strategies, limitations in diagnostic testing, and vaccine needs.
 ...
PMID:Respiratory diseases among U.S. military personnel: countering emerging threats. 1034 Nov 74

Material collected during a prospective pertussis vaccine trial in 1992-95 was examined for Bordetella pertussis (culture and serology), Bordetella parapertussis (culture), Mycoplasma pneumoniae and Chlamydia pneumoniae (PCR). From 64% (99/155) of episodes with cough for less than 100 d, 115 aetiological agents were identified in one southern and one northern subset of DT-recipients. The most common single agent was B. pertussis, representing 56%(64/115), with a median cough period of 51 d, followed by M. pneumoniae 26%(30/115), 23 d, C. pneumoniae 17% (19/115), 26 d, and B. parapertussis 2% (2/115). For co-infections, the median duration of cough was about 60 d. Spasmodic cough for 21 d or more (clinical WHO criteria for pertussis) was present in 82% (41/50) of infections with B. pertussis as single agent, 38% (17/45) with B. parapertussis, 38% (5/13) with C. pneumoniae, 26% (5/19) with M. pneumoniae and 30%(17/56) in cases where no aetiology was found. In children with cough for more than 100 d (n = 78) using all vaccine arms, B. pertussis was responsible in 83% (65/78), in 21%(16/78) together with other agents. Acellular vaccines were more efficient against serious disease than whole cell vaccine. Antibiotic treatment was more common at the southern (34%) study site than at the northern one (12%). The findings indicate that diagnosis should rely on laboratory confirmation, both for rational treatment of an individual case and for monitoring outbreaks.
 ...
PMID:Bordetella pertussis, Bordetella parapertussis, Mycoplasma pneumoniae, Chlamydia pneumoniae and persistent cough in children. 1048 58

A serological study was undertaken to investigate infections in active-duty United States soldiers with illnesses characterized by prolonged, afebrile, nonproductive coughs. Fifty-four soldiers were enrolled with such illness of >/=2 weeks' duration (case patients) along with 55 well soldiers (control subjects). Serum samples were tested for IgG and IgA antibody to 3 Bordetella pertussis antigens, pertussis agglutinins, IgM antibodies to Mycoplasma pneumoniae, IgM and IgG antibodies to Chlamydia pneumoniae, and IgM antibody to adenoviruses. Forty-six case patients (85%) had evidence of recent infection with Bordetella species, M. pneumoniae, or C. pneumoniae, and many had evidence of mixed infections; there were 27 Bordetella species, 20 C. pneumoniae, and 33 M. pneumoniae recent infections. Fifteen case patients had high titers of IgG or IgA to B. pertussis filamentous hemagglutinin without high titers of antibodies to other B. pertussis antigens, which suggested the presence of cross-reacting antibodies to M. pneumoniae and perhaps C. pneumoniae or unidentified infectious agent or agents. Since illnesses due to Bordetella species, M. pneumoniae, and C. pneumoniae can all be treated with macrolide antibiotics and B. pertussis illness can be prevented by immunization, and since military readiness was affected in 63% of the cases, it seems important to conduct further studies in military populations.
 ...
PMID:Prolonged afebrile nonproductive cough illnesses in American soldiers in Korea: a serological search for causation. 1072 40

Macrolide antibiotics (Mac) consist of a 12- to 16-membered lactone ring combined with a sugar moiety, and they inhibit protein synthesis via binding to 23S ribosomal RNA in bacteria. The 14- and 16-membered Mac are used for treating infectious diseases caused by Gram-positive and other bacteria; e.g., Haemophilus influenzae, Bordetella pertussis, Legionella pneumophila, Campylobacter, Treponema pallidum and Mycoplasma. Resistance to macrolide, lincosamide, and streptogramin-B (MLS) antibiotics in staphylococci is known to have the following mechanisms: 1) alteration of the target on ribosome due to dimethylation of a specific adenine residue in the 23S ribosomal RNA by the product of the erm gene, and consequently a decrease in binding of MLS antibiotics; 2) inactivation of streptogramin-B (STG-B) and lincosamide by the products of the sbh (encoding streptogramin B hydrolase) and linA' (encoding 3-lincomycin 4-clindamycin O-nucleotidyltransferase) genes, respectively; and 3) active efflux of Mac and STG-B antibiotics determined by the msrA and msrB genes in Staphylococcus epidermidis and Staphylococcus xylosus, respectively, both of which appear to act as an ATP-dependent efflux pump. I have shown that Staphylococcus aureus 8325(pEP2104) exhibits inducible resistance to PMS (partial macrolide and streptogramin B)-antibiotics [the 14-membered macrolides, erythromycin (EM), and oleandomycin (OL), and the 16-membered macrolide mycinamicin (MCM) and STG-B]. The sequence of the N-terminal amino acid residues of a 63 kDa protein (MsrSA) that appeared in the membrane of PMS-resistant strains was identical to that of an MsrA polypeptide related to enhanced efflux of [14C]EM. Ribosomes from PMS-resistant strains showed a similar affinity for EM to those from the PMS-sensitive host strain NCTC8325, and no inactivation of EM by 8325(pEP2104) was observed. In the present study, I showed the DNA sequence of the msrSA region on the constitutive PMS-resistant plasmid pMC38, PMS-inducible resistant plasmid pEP2104 and PMS-sensitive mutant plasmid pSP6, and the region that is essential for inducible expression in PMS resistance. In addition, I investigated the relationship between PMS resistance and intracellular accumulation of EM.
 ...
PMID:[Study of macrolide, lincosamide, and streptogramin B antibiotics resistance in Staphylococcus aureus]. 1077 59

Banked acute-phase and convalescent-phase serum samples from a previous study of respiratory illness in university students were examined for significant (>/=2-fold) increases in ELISA titers of IgA and IgG antibody to Bordetella pertussis filamentous hemagglutinin, pertactin, and fimbriae-2 and >/=4-fold titer increases to agglutinogens by agglutination. ELISA titers of antibody to pertussis toxin could not be determined because of technical problems. Chlamydia pneumoniae infections were diagnosed by culture or by a >/=4-fold increase in immunofluorescence assay titer or a single high titer (>/=512). Mycoplasma pneumoniae, influenza A and B, adenovirus, and respiratory syncytial virus infections were diagnosed by >/=4-fold increases in complement fixation titer or a single high titer (>/=64). There were 319 subjects with cough of >/=5 days' duration, and of these, 47 (15%) had significant increases in antibody to B. pertussis antigens; 26 (8%) had significant increases to fimbriae-2 or agglutinogens, indicative of B. pertussis infection, and 2 (1%) had evidence of non-B. pertussis bordetella infections. Seventeen (36%) had evidence of mixed infections or cross-reacting antibodies (influenza B infections, 5; adenovirus infections, 4; influenza A infections, 3; C. pneumoniae infections, 3; and M. pneumoniae infections, 2). Our findings suggest that bordetella infections are common in young adults with cough illnesses (incidence, 9%), and a surprising number of these are mixed infections with other respiratory pathogens.
 ...
PMID:Frequency of serological evidence of Bordetella infections and mixed infections with other respiratory pathogens in university students with cough illnesses. 1091 88

"Atypical pneumonia" is a term loosely applied to lower respiratory tract infections that are not characterized by signs and symptoms of lobar consolidation. This description can apply to disease caused by a variety of bacterial, viral and even protozoan organisms. In reality, differentiation as to etiology of pneumonia cannot be distinguished on the basis of clinical presentation. This review will discuss the epidemiology, clinical manifestations, and laboratory diagnosis of Mycoplasma pneumoniae, Chlamydia sp., Legionella sp., Bordetella pertussis, and Coxiella bumetii, the most common agents associated with atypical pneumonia. Unfortunately, because many of these pathogens are intracellular, culture systems are either not available or the techniques employed are costly, time-consuming or unsafe. Until molecular techniques are standardized and widely available, diagnosis will depend upon serologic confirmation. Given the relative importance of these organisms as causes of community acquired pneumonia, current practice guidelines recommend empiric therapy with a macrolide in patients well enough to be treated as an outpatient. However, diagnostic tests should be performed in any patient requiring hospitalization.
 ...
PMID:Laboratory diagnosis of atypical pneumonia. 1098 28

We present a comparison between serology and genetic detection of three bacterial pathogens causing lower respiratory tract infection (LRI). We evaluated serology and PCR for the detection of Mycoplasma pneumoniae, Bordetella pertussis and Chlamydia pneumoniae from 1712 nasopharyngeal and serum samples. For 856 nasopharyngeal samples, average PCR time was 7.2 days, the parallel serum samples was 13 days. Automated extraction of nucleic acids reduces average PCR time to 6.7 days.
 ...
PMID:Laboratory diagnosis of respiratory diseases: PCR versus serology. 1156 97

This study involves 106 infants (neonatal period ruled out), victims of severe bacterial infections managed from 1st january 1998 to 30 April 2001 by the four paediatric Mobile Intensive Care Unit (P.M.I.C.U.) teams AP-HP in Ile-de-France area. 46.2% of the whole infants are primary interventions (home, medical room, airport) and primary-secondary interventions (hospital emergencies) whereas 53.8% are related to secondary transports of infants who have been hospitalized and suffered from severe bacterial disorders complicating their original disease. 51% are meningitidis infections, rather due to streptococcus pneumoniae and meningococcis, associated with severe infectious purpura. 20.75% are toxic shock syndromes in patients suffering from chronic affections (sickle cell anemia), acquired or congenital immunodeficiencies; 19.8% of the cases are severe bacterial pneumonia (staphylococcal pleuro-pneumopathies, bordetella pertussis cough) or surinfected viral infections (VRS bronchiolitis, pneumonia due to mycoplasma pneumoniae and para-influenzae III). Authors study various characteristics of the two patient's groups, their immediate management by local medical team and by the P.M.I.C.U. team, their early term outcome. 65% of children recovered apparently without sequelae, 19% died, and 16% healed but with significant sequelaes, notably neurological damage. Meningitidis due to Streptococcus pneumoniae are particularly severe, because of their prognostic (10 deaths, 8 severe sequelae among the 26 cases). These observations prompted us to recommend early immunization of infants at 2-3 months post natal age by the new vaccine conjugated up to 7 valences such as "Prevenar". If this vaccine have been available for this patient series, may be avoided 8 deaths, 7 severe sequelae, with 1 septic shock syndrome due to streptococcus pneumoniae and another serious infection in a homozygous sickle cell disease.
 ...
PMID:[Severe bacterial infections in children. Survey by the pediatric mobile intensive care unit AP/HP in the Ile-de-France area]. 1158 17

We investigated the effects of intact pathogenic Mycoplasma hyopneumoniae, nonpathogenic M. hyopneumoniae, and Mycoplasma flocculare on intracellular free Ca2+ concentrations ([Ca2+]i) in porcine ciliated tracheal epithelial cells. The ciliated epithelial cells had basal [Ca2+]i of 103 +/- 3 nM (n = 217 cells). The [Ca2+]i increased by 250 +/- 19 nM (n = 47 cells) from the basal level within 100 s of the addition of pathogenic M. hyopneumoniae strain 91-3 (300 microg/ml), and this increase lasted approximately 60 s. In contrast, nonpathogenic M. hyopneumoniae and M. flocculare at concentrations of 300 microg/ml failed to increase [Ca2+]i. In Ca2+-free medium, pathogenic M. hyopneumoniae still increased [Ca2+]i in tracheal cells. Pretreatment with thapsigargin (1 microM for 30 min), which depleted the Ca2+ store in the endoplasmic reticulum, abolished the effect of M. hyoneumoniae. Pretreatment with pertussis toxin (100 ng/ml for 3 h) or U-73122 (2 microM for 100 s), an inhibitor of phospholipase C, also abolished the effect of M. hyopneumoniae. The administration of mastoparan 7, an activator of pertussis toxin-sensitive proteins G(i) and G(o), increased [Ca2+]i in ciliated tracheal cells. These results suggest that pathogenic M. hyopneumoniae activates receptors that are coupled to G(i) or G(o), which in turn activates a phospholipase C pathway, thereby releasing Ca2+ from the endoplasmic reticulum. Thus, an increase in Ca2+ may serve as a signal for the pathogenesis of M. hyopneumoniae.
 ...
PMID:Mycoplasma hyopneumoniae increases intracellular calcium release in porcine ciliated tracheal cells. 1195 88

Recurrent respiratory tract infections are responsible for about 85% of all diseases in childhood. Early diagnosis helps to prevent infections and start the appropriate treatment, what in turn prevents lungs from irreversible damage. The aim of this study was the analysis of possible causes of recurrent respiratory tract infections in children in Lodz region. We analyzed cases of 6335 children with recurrent respiratory tract infections, age 3 months to 17 years, referred to the clinic in our hospital by family doctors from 2000 to 2002. Among all children, 41.5% were diagnosed with allergy, 26.9% of patients had persistent Mycoplasma pneumoniae and 1.4% Bordetella pertussis infection. Very disturbing was the fact of very late cystic fibrosis diagnose at the age of 7,11 and 16. Congenital immune disorders were diagnosed late in five children at the age of 6,7,8,9,11, what delayed appropriate therapy and early prevention of infections.
 ...
PMID:[Analysis of possible causes of recurrent respiratory tract infections in children from Lodz, Poland]. 1458 30


<< Previous 1 2 3 4 5 6 7 8 Next >>