共查询到19条相似文献,搜索用时 93 毫秒
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目的探讨SARS病原学的冠状病毒复合组织胞浆菌感染的问题。方法对象为SARS患者尸检1例和南猴(某猴场病死猴)尸检1例,采用病理组织学和免疫组化荧光检测的方法作检查,观察和比较两者尸检材料肺、脾、淋巴结和肝的病理变化和组织内组织胞浆菌的存在。结果1.人SARS和南猴的病理组织学改变极为相似。2.免疫组化结果表明,用人SARS恢复期血清和兔抗组织胞浆菌血清与组织胞浆菌抗原均呈阳性反应,显示此例SARS患者曾感染组织胞浆菌,其次用此两种抗血清分别与人SARS和南猴肺、脾、淋巴结尸检材料反应,均有组织胞浆菌阳性菌体的存在,说明人SARS和南猴脏器均有组织胞浆菌的感染。结论人SARS病原除冠状病毒外,还有组织胞浆菌的合并感染。 相似文献
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镰刀菌是一种腐生菌,与免疫力正常宿主的软组织感染、角膜炎、甲真菌病有关。由于应用细胞毒性药物治疗白血病以及器官移植增多,侵袭性和播散性镰刀菌感染病例近20年内逐年增多。镰刀菌可以通过皮肤黏膜、呼吸道等部位引起感染,感染可局限也可播散。播散性镰刀菌病几乎仅发生于免疫受损患者。急性髓性白血病较之急性淋巴细胞白血病更易发生镰刀菌感染。镰刀菌病的诊断主要根据宿主因素、临床表现(75%的镰刀菌病会有皮肤表现)、真菌培养、组织病理学检查。分子生物学技术的应用可以将形态学难以区分的镰刀菌鉴定到种。镰刀菌病很难治疗,尤其是播散性镰刀菌病的病死率很高。体外药敏试验结果表明氟康唑、伊曲康唑、氟胞嘧啶对镰刀菌无抗菌活性,目前主要治疗方法是联合应用伏立康唑和两性霉素B,尤其是单独应用抗真菌药无效的病例。 相似文献
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目的从临床诊断的SARS病人血清中分离病原微生物。方法采用SARS患者血清通过NIH小鼠腹腔、脑和鸡胚卵黄囊和尿囊接种、人胚肺细胞呼吸道病毒培养和系列细菌培养分离病原体,所获微生物经形态学、血清学、生化学和法国梅里埃(Vitek)全自动微生物系统鉴定,复制动物模型和病理学检查。结果从SARS病人血清分离的微生物,检定结果为一种双相型深部嗜肺性真菌,属流行性肺组织胞浆菌(球状酵母菌)。结论分离的肺组织胞浆菌(球状酵母菌)是呼吸系统深部真菌。 相似文献
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目的探讨皮肤播散型孢子丝菌病发生的病因、临床特点、诊断及鉴别诊断,以提高对该病的认识,避免误诊、误治。方法对1例以声嘶为首发表现的皮肤播散型孢子丝菌病的临床资料、组织病理、真菌培养结果进行分析,并进行相关文献复习。结果患者以声嘶为首发表现,3个月后出现全身散在皮下结节。结节逐渐增多,部分破溃伴脓血。咽部组织病理示鳞状上皮黏膜急慢性炎伴上皮乳头状增生,可见多核巨细胞,抗酸染色未查出阳性菌。皮损处脓液真菌镜检及培养阴性。病理符合感染性肉芽肿。组织真菌培养见孢子丝菌生长。诊断为皮肤播散型孢子丝菌病。结论皮肤播散型孢子丝菌病在免疫正常人群发病时容易导致误诊误治;皮损表面脓液真菌镜检及培养阳性率低。病变组织真菌培养有利于得到阳性结果,早日明确诊断和治疗。 相似文献
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刘玲莉王瑶段思蒙窦红涛徐英春 《中国真菌学杂志》2022,(5):402-404
患者,男,55岁,因反复高热,多发淋巴结及脾肿大入院。骨髓穿刺培养出荚膜组织胞浆菌,经rDNA ITS序列测定证实。予两性霉素B序贯伊曲康唑抗真菌治疗有效,一般情况好转,病情稳定出院。 相似文献
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《中国真菌学杂志》2021,(3)
目的提高对造血干细胞移植患者合并镰刀菌感染,尤其是播散性镰刀菌病的认识,以做到早期诊断、及时治疗,从而改善其预后。方法对本院从2015年4月至2020年9月诊治的4例造血干细胞移植患者合并播散性镰刀菌病的诊断、治疗及预后进行回顾性分析。结果 4例患者均为确诊病例,均发生于造血干细胞植活前或粒缺期,给予两性霉素B脂质体/两性霉素B联合伏立康唑抗真菌治疗。3例患者的播散性镰刀菌病得到控制(其中1例死于铜绿假单胞菌败血症),1例抗真菌治疗后无效死亡。结论造血干细胞移植后播散性镰刀菌病预后差,死亡率高,早期给予有效抗真菌治疗及快速免疫重建是改善其生存率的有效手段。 相似文献
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镰刀菌主要为植物致病菌,但也可引起严重人类感染。镰刀菌病临床表现形式多样,本文主要综述相关的皮肤感染,分为局限性皮肤感染及播散性感染,诊断多较困难。由于该属真菌对抗真菌药物存在天然耐药,播散性镰刀菌病死亡率可达80%-90%。本文对Medline和中文文献数据库中的相关文献进行了系统查阅和分析,综合归纳了镰刀菌所致皮肤感染的致病种、地域分布、危险因子、临床表现形式、药物敏感性及其诊疗方案等,该综述对全面了解镰刀菌病的特征及对临床医师对本病的诊断具有重要的意义。 相似文献
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Motta AC Galo R Lourenço AG Komesu MC Arruda D Velasco FG Garcia BC Foss NT 《Mycopathologia》2006,161(3):161-165
Histoplasmosis is a fungal infection caused by the Histoplasma capsulatum. Mucosal manifestations are uncommon, but, when present, they are usually associated with pulmonary or chronic disseminated
infection. The course of the disease is often related to the host immune response. The purpose of this article is to describe
the clinical and microscopic findings of unusual involvement of nasal cartilage and septal destruction, and oral lesions of
histoplasmosis in an immunosuppressed patient who presented an unusual form of the disease. 相似文献
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Leimann BC Pizzini CV Muniz MM Albuquerque PC Monteiro PC Reis RS Almeida-Paes R Lazera MS Wanke B Pérez MA Zancopé-Oliveira RM 《Revista iberoamericana de micología》2005,22(3):141-146
Histoplasmosis, caused by the dimorphic fungus Histoplasma capsulatum, is endemic in many regions of the Americas, Asia and Africa. It has a wide spectrum of clinical manifestations, from asymptomatic infection to severe disseminated disease. A retrospective study was carried out to describe the clinical forms and assess the clinical significance of the laboratory diagnostic tests of patients with histoplasmosis during the period of July 1987 to December 2003 at Instituto de Pesquisa Clínica Evandro Chagas/ FIOCRUZ, RJ, Brazil. Seventy-four patients were included. Forty-nine percent of the cases (n = 36) occurred in HIV positive patients who presented with disseminated disease. The remaining 38 cases were classified in different clinical forms. Histoplasma capsulatum was isolated from 69.5% of the clinical specimens sent to culture. Immunodiffusion and immunoblot were positive in 72.6% and 100% of the performed tests, respectively. Histopathologic findings suggestive of H. capsulatum were found in 63.2% of the performed exams. Serology had a lower proportion of positivity amongst AIDS patients, when compared with HIV negative patients (X2 = 6.65; p lower than 0.008). Statistical differences between AIDS and non-AIDS patients were not observed with culture and histopathology. The specific role of each test varies according to the clinical form. Physicians need to know the value and limitations of the available diagnostic tests, but before that, they have to think about histoplasmosis and consider this clinical entity in their differential diagnosis. 相似文献
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Solari R Corti M Cangelosi D Escudero M Negroni R Saccheri C Schtirbu R 《Revista iberoamericana de micología》2007,24(2):164-166
Histoplasmosis is an endemic and systemic mycosis, caused by the dimorphic fungus Histoplasma capsulatum var capsulatum. Disseminated disease in immunocompromised patients generally results from the reactivation of latent foci after a prolonged period of asymptomatic infection. We report a case of laryngeal histoplasmosis as the unique clinical manifestation of a progressive form of the disease in a patient with advanced HIV/AIDS disease. Histopathological analysis of laryngeal biopsy smears revealed granulomas containing Histoplasma-like organisms. Treatment with amphotericin B followed by itraconazole resulted in complete remission of laryngeal lesions. To our knowledge, this is the third case report of laryngeal histoplasmosis in a patient with AIDS. 相似文献
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Phoompoung Pakpoom Chayakulkeeree Methee Ngamskulrungroj Popchai Pongpaibul Ananya 《Mycopathologia》2019,184(1):177-180
Mycopathologia - Histoplasma capsulatum is one of the most common pathogenic dimorphic fungi in Thailand. Its usual clinical syndrome is progressive disseminated histoplasmosis, whereas isolated... 相似文献
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Four main clinical types of disease result from infection by the fungus Histoplasma capsulatum: (1) the primary complex; (2) acute pulmonary histoplasmosis; (3) chronic cavitary pulmonary histoplasmosis; (4) disseminated systemic histoplasmosis.Chronic cavitary histoplasmosis of the lung is indistinguishable clinically and radiographically from pulmonary tuberculosis. In this disease, however, the histoplasmin skin test and the histoplasmin complement fixation test are positive in more than 80% of cases and sputum cultures are usually positive for Histoplasma capsulatum. The mortality rate of the chronic cavitary type is greater than 30%. The antibiotic, amphotericin B, is the most effective drug in treatment. If surgical resection of the cavitary lesion is feasible, under amphotericin coverage, this is the treatment of choice.During the past year, two patients with chronic cavitary histoplasmosis illustrating the aforementioned features were diagnosed at the Toronto Hospital for Tuberculosis. 相似文献
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A case of disseminated histoplasmosis diagnosed by percutaneous needle biopsy cytology is reported. The patient presented with fever and pancytopenia. Computed tomography (CT) revealed retroperitoneal lymphadenopathy. Cytology smears prepared from a CT-guided screw needle biopsy of one of the lymph nodes showed numerous histiocytes with intracytoplasmic yeast forms consistent with Histoplasma capsulatum. Fungal cultures prepared from additional needle biopsy material confirmed the diagnosis. This case illustrates the utility of needle biopsy in the evaluation of radiographically detected retroperitoneal lymphadenopathy and in the rapid diagnosis of infectious disease in certain clinical settings. 相似文献
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Ricardo M. La Hoz James E. Loyd L. Joseph Wheat John W. Baddley 《Current fungal infection reports》2013,7(1):36-43
Histoplasmosis is an endemic mycosis caused by the dimorphic fungus Histoplasma capsulatum. Some important manifestations of infection include acute or chronic pulmonary disease, histoplasmomas, progressive disseminated histoplasmosis, and central nervous system infection. Depending on the clinical presentation, site of infection and severity of disease, either amphotericin B preparations followed by itraconazole, or itraconazole alone have become the preferred treatments. Because prolonged therapy (6 weeks to 24 months) may be required, careful monitoring for nephrotoxicity in patients on amphotericin B preparations is necessary. In addition, in patients receiving itraconazole, vigilance for drug interactions and pharmacokinetic properties is warranted. Histoplasma antigen testing has improved rapidity of diagnosis and the ability of long-term monitoring for clinical response in patients with histoplasmosis. 相似文献
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An adult red baboon (Papio cynocephalus papio) had a severe disseminated case of African histoplasmosis (Histoplasma capsulatum var. duboisii) with skin lesions from small pustules to ulcerative granulomas. Osteolytic lesions were seen radiographically. Treatment with ketoconazole for 6 months was unsuccessful. 相似文献
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Laniado-Laborín R 《Revista iberoamericana de micología》2007,24(4):249-258
The endemic mycoses traditionally include coccidioidomycosis, histoplasmosis, blastomycosis and paracoccidioidomycosis. Although sporotrichosis and chromomycosis are technically not included among the endemic mycoses, they are frequently diagnosed in Mexico. Most systemic endemic mycoses are a consequence of inhaling the fungi, while subcutaneous mycoses are acquired through the inoculation of vegetable matter or soil containing the organism. Coccidioidomycosis is caused by Coccidioides spp., a dimorphic pathogenic fungus. Approximately 60% of exposures result in asymptomatic infection; in the rest there are protean manifestations that range from a benign syndrome also known as "Valley Fever" to progressive pulmonary or extrapulmonary disease. Histoplasmosis, caused by the dimorphic fungus Histoplasma capsulatum, is endemic to the Americas. Pulmonary histoplasmosis manifestations are protean, ranging from a brief period of malaise to a severe, prolonged illness. The spectrum of illness in disseminated histoplasmosis ranges from a chronic, intermittent course to an acute and rapidly fatal infection. Paracoccidioidomycosis is a chronic, granulomatous systemic disease caused by Paracoccidioides brasiliensis that characteristically produces a primary pulmonary infection, often asymptomatic, and then disseminates to form ulcerative granulomata of the oral, nasal and occasionally the gastrointestinal mucosa. Sporotrichosis, caused by Sporothrix schenckii, has diverse clinical manifestations; the most frequent is the lymphocutaneous form. Generally, infection results from inoculation of the fungus through thorns, splinters, scratches and small traumas. Chromomycosis (Chromoblastomycosis) is a slowly progressive cutaneous and subcutaneous mycosis attributed to various saprophyte Hypomycetes fungi. The primary lesion is also thought to develop as a result of percutaneous traumatic inoculation. 相似文献