Brook I
Naval Medical Center, Bethesda, Md.
Arch Dermatol. 1989 Dec;125(12):1658-61.
Specimens from 231 epidermal cyst abscesses were inoculated on media supportive for growth of aerobic and anaerobic bacteria. Of these, 192 yielded bacterial growth. Aerobic or facultative bacteria only were recovered in 84 specimens (44%), anaerobic bacteria only in 57 specimens (30%), and mixed aerobic and anaerobic bacteria in 51 specimens (26%). A total of 315 isolates (162 anaerobes and 153 aerobes) were recovered. An average of 0.8 aerobic or facultative isolates per infected cyst were recovered, and this number was unrelated to the cysts' anatomic sites. However, the number of anaerobic bacteria varied; they were isolated more frequently in perirectal (1.5 isolates per specimen), vulvovaginal (1.4), and head (1.1) infections, and less frequently in trunk (0.7) and extremities (0.4) infections. The predominant aerobic or facultative bacteria were Staphylococcus aureus (81 isolates), group A streptococcus (9 isolates), and Escherichia coli (7 isolates). The predominant anaerobic organisms were Peptostreptococcus species (85 isolates) and Bacteroides species (55 isolates, including 12 Bacteroides melaninogenicus and 9 Bacteroides fragilis groups). The study highlights the polymicrobial nature and predominance of anaerobes in cyst abscesses in the perirectal, vulvovaginal, and head areas.
从231例表皮囊肿脓肿标本中接种于支持需氧菌和厌氧菌生长的培养基上。其中，192例有细菌生长。仅培养出需氧菌或兼性菌的标本有84例（44%），仅培养出厌氧菌的标本有57例（30%），需氧菌和厌氧菌混合培养的标本有51例（26%）。共分离出315株菌株（162株厌氧菌和153株需氧菌）。每个感染囊肿平均分离出0.8株需氧菌或兼性菌，这一数量与囊肿的解剖部位无关。然而，厌氧菌的数量有所不同；在直肠周围（每个标本分离出1.5株）、外阴阴道（1.4株）和头部（1.1株）感染中分离频率较高，而在躯干（0.7株）和四肢（0.4株）感染中分离频率较低。主要的需氧菌或兼性菌是金黄色葡萄球菌（81株）、A组链球菌（9株）和大肠杆菌（7株）。主要的厌氧菌是消化链球菌属（85株）和拟杆菌属（55株，包括12株产黑素拟杆菌和9株脆弱拟杆菌群）。该研究强调了直肠周围、外阴阴道和头部区域囊肿脓肿中微生物的多样性以及厌氧菌的优势地位。
