[The correlation between the number of polymorphonuclear leukocytes in human oral cavity and the counts of some bacteria].
The aim of the study was to evaluate the relationship between the number of polymorphonuclear leukocytes (PMNL) and the number of selected bacteria in human oral cavity. Sixty one healthy people (periodontal index of Russel's did not exceed 0.2), aged 22-26 were investigated. PMNL were isolated by rinsing oral cavity with isotonic, buffered NaCl solution. Nonstimulated whole saliva was bacteriologically examined. The number of PMNL, which was obtained from mouth of examined people was between 100,000 and 4,200,000 in 100 mL of rinsings. Usually, i.e. in 34% of cases, the number was between 500,000-1,000,000. Streptococci were isolated from all tested people and their number was the biggest. Almost in all cases there were isolated cariogenic bacteria--Streptococcus mutans (95%) and lactobacilli (93%). Haemophili, staphylococci, including Staphylococcus aureus, were found relatively often (in 86%, 86% and 52% respectively). Gram-negative enteric rods were rarely isolated (33%) and were the least numerous group of all. It has been stated, that there is a comparatively strong negative correlation between the number of PMNL in oral cavity and the number of streptococci (r=-0.55; p<0.0001), haemophili (r=-0.564; p<0.0001), staphylococci (r=-0.538; p<0.0001), lactobacilli (r=-0.407; p=0.0017) and Streptococcus mutans (r=-0.483; p=0.0002). The results suggest that PMNL are one of the factors controlling the number of some bacteria in human oral cavity.
Zarzycka
Beata
B
Zakład Mikrobiologii Lekarskiej Uniwersytetu Medycznego w Lodzi.
Płuciennik
Małgorzata
M
Krzemiński
Zbigniew
Z
D000328:Adult; D005260:Female; D006090:Gram-Negative Bacteria / Q000302:isolation & purification*; D006094:Gram-Positive Bacteria / Q000302:isolation & purification*; D006801:Humans; D007958:Leukocyte Count; D008297:Male; D009055:Mouth / Q000382:microbiology*; D009504:Neutrophils; D012463:Saliva / Q000382:microbiology*