Intracranial actinomycosis in juvenile patients Case report and review of the literature

A case of actinomycotic brain infection in a juvenile patient is described. Cases of actinomycosis affecting the head and neck are rare, particularly in juvenile patients. In this case complete resolution of the infection was achieved by means of surgical treatment and prolonged antibiotic therapy. The authors emphasize the importance of a combined approach for treatment of this unusual brain infection and stress the difficulties involved in the diagnosis of this pathology. Received: 3 November 1997     

Endobronchial aspergillosis and actinomycosis associated with broncholithiasis

Endobronchial aspergillosis or actinomycosis associated with broncholithiasis is extremely rare. Here, we describe two cases of endobronchial aspergillosis and actinomycosis associated with broncholithiasis. The patients underwent pulmonary resection due to massive hemoptysis. These cases reveal that a bronchiolith can potentially induce endobronchial fungal or bacterial infection, even in immunocompetent patients.     

Actinomyces graevenitzii pulmonary abscess mimicking tuberculosis in a healthy young man

Pulmonary actinomycosis is a rare disease that is often misdiag-nosed as tuberculosis or lung cancer. Actinomyces graevenitzii is a relatively new recognized Actinomyces species isolated from various clinical samples. The authors report a case of pulmonary actinomycosis caused by A graevenitzii. A computed tomography examination revealed an excavated consolidation in the middle right lobe of a previously healthy young man who presented with a long history of moderate cough. Cultures of the bronchoalveolar lavage fluid confirmed the diagnosis of pulmonary abscess caused by A gravenitzii. At the three-month follow-up consultation and, after six weeks of high-dose amoxicillin, the pulmonary lesion had completely disappeared.     

放线菌性脑脓肿一例

思者女,57岁,务农.主诉:头痛、恶心伴呕吐半个月.患者半个月前头痛伴恶心发作,开始误认为感冒,进行治疗后效果不佳,随后出现喷射状呕吐,在当地农村卫生所给予甘露醇治疗后症状略有减轻.因高颅压症状持续加重到当地县医院就诊,头颅CT示左颞肿瘤.为进一步治疗,患者于2006年11月12日入住我院.入院后进行抽血、心电图、胸片检查,术前诊断:颅内占位性病变,考虑为脑肿瘤.3d后在气管插管全麻下行开颅手术,左颞入路,术中发现左侧颞中回至颞极之间脑组织呈黄绿色质变,有包膜,质地略硬,即考虑脑脓肿可能,先行穿刺,抽出黄绿色脓液约30 mL,初步诊断为铜绿假单胞菌感染、脑脓肿.     

Cutaneous actinomycosis: a rare case

Cutaneous actinomycosis is a rare presentation. Here we present a case of cutaneous actinomycosis with no history of trauma or systemic dissemination. The isolate was identified as Actinomyces viscosus by standard methods. The isolate was found to be penicillin resistant by Kirby Bauer disc diffusion method. Therefore, the patient was treated with cotrimoxazole and improved. Thus, this case highlights the importance of isolation and susceptibility testing in actinomycotic infection. The sinuses have healed, and the patient has recovered.     

唾液中放线菌与儿童龋病相关性的定量检测研究

目的建立检测内氏放线菌（Actinomyces naeslundii,An）与龋齿放线菌（Actinomyces odontolyticus,Ao）的实时荧光定量PCR（RT-PCR）。方法探讨An和Ao在唾液中的定植数量与乳牙龋失补牙面指数（dmfs）的关系。方法分别采集59名不同患龋状况儿童唾液样本,其中无龋组（dmfs=0）19名、中龋组（dmfs=4～6）21名和高龋组（dmfs﹥8）19名。提取细菌总基因组DNA,应用SYBR GreenⅡ模式的实时荧光定量PCR技术,对唾液中的内氏放线菌及龋齿放线菌进行定量检测,所得数据应用SAS9.2统计软件进行统计学分析。结果内氏放线菌占总菌的比例在三组中有显著差异（P〈0.05）,在高龋组中显著高于中龋组（P〈0.0001）,在中龋组与无龋组间无显著差异（P〉0.05）;龋齿放线菌占总菌的比例在三组中无显著差异（P〉0.05）。结论儿童唾液中内氏放线菌的数量与龋病的发生发展过程有明显相关性;龋齿放线菌与儿童龋病的发生发展无明显相关性。     

Effects of pH on the glucose and lactate metabolisms by the washed cells of Actinomyces naeslundii under anaerobic and aerobic conditions

Effects of pH on the glucose and lactate metabolism by the washed cells of Actinomyces naeslundii genospecies 1 and 2 under anaerobic and aerobic conditions were studied. The rate of acid production from glucose was the highest at pH 7.0 and decreased as the pH lowered to 4.5, irrespective of atmospheric conditions. The anaerobic end-product in the absence of bicarbonate was mainly lactate, while in the presence of bicarbonate the rate of acid production increased 1.8-2.5 times with the production of formate, acetate and succinate in addition to lactate. Under aerobic conditions, the cells produced acids from glucose along with oxygen consumption and the end-product was mainly acetate. In contrast to the glucose metabilism, the cells produced base from lactate along with oxygen consumption. The rates of base production and oxygen consumption were the highest at pH 5.5. The end-products from lactate were acetate and pyruvate. These results indicate that oral actinomyces has a various activity of glucose and lactate metabolism at a wide range of environmental pH and suggest its flexibility in surviving in dental plaque, where the environmental factors fluctuate.     

消毒措施对控制学校室内空气中微生物效果观察

为了观察三氯异氰尿酸对室内空气微生物的杀灭效果 ,采用平板沉降法进行了检测。结果 ,消毒前不同地点室内空气中细菌总数平均为 4 0 0 0cfu/m3 。用有效氯含量 10 0 0mg/L的三氯异氰尿酸水溶液喷雾消毒 ,4 5min后室内空气中细菌总数明显减少 ,平均控制在 2 0 0 0cfu/m3 以内。对空气中细菌平均消除率为 5 8.33% ,其中使放线菌下降 5 1.5 9% ,真菌下降 33.6 0 %。结果显示 ,三氯异氰尿酸喷雾消毒对空气中细菌有一定杀灭作用     

耳廓苏黎世放线菌病首例报告及文献复习

本文对某院收治的一例放线菌化脓性耳廓软膜炎的诊治进行了回顾性分析。患者因右耳廓急性红肿、疼痛2 d入院,入院当天即行耳廓脓肿切开引流,脓液送细菌培养。4 d后脓液培养结果回报为苏黎世放线菌,诊断为右耳廓苏黎世放线菌病。随后相继使用大剂量青霉素G静脉滴注、阿莫西林口服,共治疗3个半月,耳廓红肿消退、未变形或遗留瘢痕,停药后继续随访3个月无复发。提示苏黎世放线菌感染需早诊断,大剂量、足疗程的抗菌药物治疗,脓肿形成时及时切开引流,可避免因漏诊而未得到及时治疗导致的外耳廓瘢痕、畸形以及功能的损伤。