PMID- 17109094 OWN - NLM STAT- MEDLINE DCOM- 20070213 LR - 20180509 IS - 1341-321X (Print) IS - 1341-321X (Linking) VI - 12 IP - 5 DP - 2006 Oct TI - Study of nasopharyngeal bacterial flora. Second report. Variations in nasopharyngeal bacterial flora in children aged 6 years or younger when administered antimicrobial agents. Part 1. PG - 287-304 AB - In our first report, we investigated nasopharyngeal bacterial flora related to penicillin-resistant Streptococcus pneumoniae (PRSP) and beta-lactamase-negative ampicillin-resistant Haemophilus influenzae (BLNAR) and their relation to acute upper respiratory tract infection (AURTI). This report analyzes the results of a study of nasopharyngeal bacterial flora before the administration of antimicrobial agents in 172 AURTI patients aged 6 years or younger. In addition to Gram staining, microscopic observation, and culturing, a polymerase chain reaction (PCR) method was used to identify PRSP (gPRSP) and BLNAR (gBLNAR) drug-resistant genes. Of the patients analyzed, 90% had acute otitis media (AOM) and were aged 2 years or younger. The antimicrobial agents administered were amoxicillin (34%), clavulanic acid/amoxicillin (11%), cefditren pivoxil (CDTR-PI) (43%), and others (12%). This was particularly true for patients administered CDTR-PI, among whom there were many who had already suffered one or more episodes of AOM by the age of 1 year or younger, and many in which gPRSP were detected (P < 0.01). There was a significant relation between the degree of nasopharyngeal inflammation indicated by leukocyte infiltration images and the amount of S. pneumoniae and H. influenzae detected, which are the main pathogenic bacteria causing AOM (P < 0.01). In addition to leukocyte infiltration images, there were cases in which shedding of ciliated cells was observed and/or giant monocytic cells. Both nasopharyngeal leukocyte infiltration images and/or shed cell findings observed in infant AURTI cases are important indices for the prompt detection of gPRSP and/or gBLNAR and appropriate doses of antimicrobial agents. FAU - Konno, Masatoshi AU - Konno M AD - Teikyo University School of Medicine, Tokyo, Japan. mrsa@interlink.or.jp FAU - Baba, Shunkichi AU - Baba S FAU - Mikawa, Haruki AU - Mikawa H FAU - Hara, Kohei AU - Hara K FAU - Matsumoto, Fumio AU - Matsumoto F FAU - Kaga, Kimitaka AU - Kaga K FAU - Nishimura, Tadao AU - Nishimura T FAU - Kobayashi, Toshimitsu AU - Kobayashi T FAU - Furuya, Nobuhiko AU - Furuya N FAU - Moriyama, Hiroshi AU - Moriyama H FAU - Okamoto, Yoshitaka AU - Okamoto Y FAU - Furukawa, Mituru AU - Furukawa M FAU - Yamanaka, Noboru AU - Yamanaka N FAU - Matsushima, Toshiharu AU - Matsushima T FAU - Yoshizawa, Yasuyuki AU - Yoshizawa Y FAU - Kohno, Shigeru AU - Kohno S FAU - Kobayashi, Kunihiko AU - Kobayashi K FAU - Morikawa, Akihiro AU - Morikawa A FAU - Koizumi, Shoichi AU - Koizumi S FAU - Sunakawa, Keisuke AU - Sunakawa K FAU - Inoue, Matsuhisa AU - Inoue M FAU - Ubukata, Kimiko AU - Ubukata K LA - eng PT - Journal Article DEP - 20061106 PL - Netherlands TA - J Infect Chemother JT - Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy JID - 9608375 RN - 0 (Anti-Infective Agents) RN - EC 3.5.2.6 (beta-Lactamases) SB - IM MH - Age Factors MH - Ampicillin Resistance MH - Anti-Infective Agents/*therapeutic use MH - Child MH - Child, Preschool MH - Female MH - Haemophilus Infections/drug therapy/microbiology MH - Haemophilus influenzae/enzymology/genetics/*isolation & purification MH - Humans MH - Infant MH - Male MH - Nasopharynx/drug effects/*microbiology MH - Otitis Media/drug therapy/microbiology MH - Pneumococcal Infections/drug therapy/microbiology MH - Polymerase Chain Reaction/methods MH - Respiratory Tract Infections/drug therapy/microbiology MH - Streptococcus pneumoniae/genetics/*isolation & purification MH - beta-Lactamases/metabolism EDAT- 2006/11/17 09:00 MHDA- 2007/02/14 09:00 CRDT- 2006/11/17 09:00 PHST- 2006/05/15 00:00 [received] PHST- 2006/07/19 00:00 [accepted] PHST- 2006/11/17 09:00 [pubmed] PHST- 2007/02/14 09:00 [medline] PHST- 2006/11/17 09:00 [entrez] AID - S1341-321X(06)70914-X [pii] AID - 10.1007/s10156-006-0468-5 [doi] PST - ppublish SO - J Infect Chemother. 2006 Oct;12(5):287-304. doi: 10.1007/s10156-006-0468-5. Epub 2006 Nov 6.