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Medical Mycology Case Reports Dec 2019Mycetoma is a chronic-granulomatous disease characterized by the inflammation, swollen organ, draining sinuses containing blood, pus, and grains. We present a case of...
Mycetoma is a chronic-granulomatous disease characterized by the inflammation, swollen organ, draining sinuses containing blood, pus, and grains. We present a case of madura foot with novel etiologic agent Diagnosis was based on morphologic, physiologic, histipathologic and molecular methods. antifungal susceptibility tests revealed that MIC values for itraconazole, amphotericin B, and posaconazole were 0.0313 μg/ml, 0.0313 μg/ml, and 0.004 μg/ml, respectively. The patient was treated and recovered by itraconazole(400 mg/day) after prolonged course.
PubMed: 31667052
DOI: 10.1016/j.mmcr.2019.09.005 -
Epidemiology and Infection Oct 2019Mycetoma is a chronic granulomatous, suppurative and progressive inflammatory disease that usually involves the subcutaneous tissue and bones after traumatic inoculation...
Mycetoma is a chronic granulomatous, suppurative and progressive inflammatory disease that usually involves the subcutaneous tissue and bones after traumatic inoculation of the causative organism. In India, actinomycotic mycetoma is prevalent in south India, south-east Rajasthan and Chandigarh, while eumycetoma, which constitutes one third of the total cases, is mainly reported from north India and central Rajasthan. The objective was to determine the epidemiological profile and spectrum of eumycetoma from a tertiary care hospital in Delhi, North India. Thirty cases of eumycetoma were diagnosed by conventional methods of direct microscopy, culture and species-specific sequencing as per standard protocol. The spectrum of fungal pathogens included Exophiala jeanselmei, Madurella mycetomatis, Fusarium solani, Sarocladium kiliense, Acremonium blochii, Aspergillus nidulans, Fusarium incarnatum, Scedosporium apiospermum complex, Curvularia lunata and Medicopsis romeroi. Eumycetoma can be treated with antifungal therapy and needs to be combined with surgery. It has good prognosis if it is timely diagnosed and the correct species identified by culture for targeted therapy of these patients. Black moulds required prolonged therapy. Its low reporting and lack of familiarity may predispose patients to misdiagnosis and consequently delayed treatment. Hence health education and awareness campaign on the national and international level in the mycetoma belt is crucial.
Topics: Adolescent; Adult; Female; Humans; India; Male; Middle Aged; Mycetoma; Neglected Diseases; Prognosis; Retrospective Studies; Young Adult
PubMed: 31637988
DOI: 10.1017/S0950268819001766 -
Antimicrobial Agents and Chemotherapy Dec 2019The use of the Sensititre YeastOne YO10 alamarBlue assay for the susceptibility testing of was evaluated in isolates with and without pyomelanin secretion. Pyomelanin...
Pyomelanin Secretion in Madurella mycetomatis Interferes with Spectrophotometric Endpoint Reading Using the Sensititre YeastOne alamarBlue Assay but Not with Visual Endpoint Reading.
The use of the Sensititre YeastOne YO10 alamarBlue assay for the susceptibility testing of was evaluated in isolates with and without pyomelanin secretion. Pyomelanin secretion did not influence visual endpoint reading; however, it caused a shift in peak absorbance from 570 nm to 620 nm when read spectrophotometrically. Therefore, when choosing the method for endpoint reading, the presence of pyomelanin should be considered.
Topics: Azoles; Madurella; Melanins; Mycetoma
PubMed: 31611353
DOI: 10.1128/AAC.01532-19 -
Journal de Mycologie Medicale Dec 2019Eumycetomas are chronic subcutaneous pseudo-tumoral infections, endemic in arid tropical areas, which are caused by exogenous fungi that produce grains in vivo. The...
Eumycetomas are chronic subcutaneous pseudo-tumoral infections, endemic in arid tropical areas, which are caused by exogenous fungi that produce grains in vivo. The objective of our work is to establish their epidemiological, clinical and mycological profile in our Moroccan context. Therefore, we conducted a retrospective study, extending from 1975 to 2019, compiling all cases of eumycetomas that were diagnosed in the parasitology-mycology laboratory of the Ibn Sina University Hospital of Rabat. The diagnosis, based on the swabbing of exudates and eventual grains or the study of biopsies, included the direct examination of 30% KOH mounts, the realization of appositions colored by May-Grünwald-Giemsa and the incubation on 3 Sabouraud media at 27° and 37°C. In 44 years, 12 cases of eumycetoma have been diagnosed, with a male to female ratio of 5:1 and a mean age of 44.8 years. The lesions, evolving from 1 to 30 years, were podal in 10 cases, popliteal and gluteal in one case each, with osteolysis in 3 patients. The collected grains were black in 9 cases, white in 2 others. Direct examination was unanimously positive, revealing entangled hyphae, whilst culture isolated Madurella sp. in 9 cases, Trichophyton rubrum, Acremonium sp. in one case each and remained sterile in the last case. The treatment was medical in 8 cases, medico-surgical in 3 others, with loss of sight of most patients.
Topics: Adult; Antifungal Agents; Clinical Laboratory Techniques; Female; Fungi; Humans; Madurella; Male; Middle Aged; Morocco; Mycetoma; Retrospective Studies; Trichophyton; Young Adult
PubMed: 31587988
DOI: 10.1016/j.mycmed.2019.100902 -
PLoS Neglected Tropical Diseases Aug 2019Mycetoma is a devastating neglected tropical disease, caused by various fungal and bacterial pathogens. Correct diagnosis to the species level is mandatory for proper...
Mycetoma is a devastating neglected tropical disease, caused by various fungal and bacterial pathogens. Correct diagnosis to the species level is mandatory for proper treatment. In endemic areas, various diagnostic tests and techniques are in use to achieve that, and that includes grain culture, surgical biopsy histopathological examination, fine needle aspiration cytological (FNAC) examination and in certain centres molecular diagnosis such as PCR. In this retrospective study, the sensitivity, specificity and diagnostic accuracy of grain culture, surgical biopsy histopathological examination and FNAC to identify the mycetoma causative organisms were determined. The histopathological examination appeared to have better sensitivity and specificity. The histological examination results were correct in 714 (97.5%) out of 750 patients infected with Madurella mycetomatis, in 133 (93.6%) out of 142 patients infected with Streptomyces somaliensis, in 53 (74.6%) out of 71 patients infected with Actinomadura madurae and in 12 (75%) out of 16 patients infected with Actinomadura pelletierii. FNAC results were correct in 604 (80.5%) out of 750 patients with Madurella mycetomatis eumycetoma, in 50 (37.5%) out of 133 Streptomyces somaliensis patients, 43 (60.5%) out of 71 Actinomadura madurae patients and 11 (68.7%) out of 16 Actinomadura pelletierii. The mean time required to obtain the FNAC result was one day, and for the histopathological examinations results it was 3.5 days, and for grain it was a mean of 16 days. In conclusion, histopathological examination and FNAC are more practical techniques for rapid species identification than grain culture in many endemic regions.
Topics: Actinobacteria; Actinomadura; Adolescent; Adult; Aged; Biopsy; Child; Child, Preschool; Diagnostic Tests, Routine; Female; Humans; Madurella; Male; Middle Aged; Mycetoma; Pathology, Molecular; Polymerase Chain Reaction; Retrospective Studies; Sensitivity and Specificity; Streptomyces; Young Adult
PubMed: 31465459
DOI: 10.1371/journal.pntd.0007056 -
PLoS Neglected Tropical Diseases Jul 2019Mycetoma is a persistent, progressive granulomatous inflammatory disease caused either by fungi or by bacteria. Characteristic of this disease is that the causative...
Mycetoma is a persistent, progressive granulomatous inflammatory disease caused either by fungi or by bacteria. Characteristic of this disease is that the causative agents organise themselves in macroscopic structures called grains. These grains are surrounded by a massive inflammatory reaction. The processes leading to this host tissue reaction and the immunophenotypic characteristics of the mycetoma granuloma are not known. Due to the massive immune reaction and the tissue remodeling involved, we hypothesised that the expression levels of interleukin-17 (IL-17) and matrix metalloprotease-9 (MMP-9) in the mycetoma granuloma formation were correlated to the severity of the disease and that this correlation was independent of the causative agent responsible for the granuloma reaction. To determine the expression of IL-17 and MMP-9 in mycetoma lesions, the present study was conducted at the Mycetoma Research Centre, Sudan. Surgical biopsies from 100 patients with confirmed mycetoma were obtained, and IL-17 and MMP-9 expression in the mycetoma granuloma were evaluated immunohistochemically. IL-17 was mainly expressed in Zones I and II, and far less in Zone III. MMP-9 was detected mainly in Zones II and III, and the least expression was in Zone I. MMP-9 was more highly expressed in Actinomadura pelletierii and Streptomyces somaliensis biopsies compared to Madurella mycetomatis biopsies. MMP-9 levels were directly proportional to the levels of IL-17 (p = 0.001). The only significant association between MMP9 and the patients' characteristics was the disease duration (p<0.001). There was an insignificant correlation between the IL-17 levels and the patients' demographic characteristics.
Topics: Actinobacteria; Actinomadura; Adolescent; Adult; Biopsy; Child; Collagen; Female; Gene Expression; Granuloma; Humans; Immunohistochemistry; Interleukin-17; Madurella; Male; Matrix Metalloproteinase 9; Middle Aged; Mycetoma; Qualitative Research; Severity of Illness Index; Streptomyces; Sudan; Young Adult
PubMed: 31295246
DOI: 10.1371/journal.pntd.0007351 -
PLoS Neglected Tropical Diseases Apr 2019Mycetoma is a neglected tropical disease, endemic in many tropical and subtropical regions, characterised by massive deformity and disability and can be fatal if...
Mycetoma is a neglected tropical disease, endemic in many tropical and subtropical regions, characterised by massive deformity and disability and can be fatal if untreated early and appropriately. Interleukins (IL) -35 and IL-37 are newly discovered cytokines that play an important role in suppressing the immune system. However, the expression of these interleukins in patients with Madurella mycetomatis (M. mycetomatis) induced eumycetoma has not yet been explored. The aim of this study is to determine the levels of IL-1 family (IL-1β, IL-37) and IL-12 family (IL-12, IL-35) in a group of these patients and the association between these cytokines levels and the patients' demographic characteristics. The present, case-control study was conducted at the Mycetoma Research Centre, Soba University Hospital, University of Khartoum, Sudan and it included 140 individuals. They were divided into two groups; group I: healthy controls [n = 70; median age 25 years (range 12 to 70 years)]. Group II: mycetoma patients [n = 70 patients; median age 25 (range 13 to 70 years)]. Cytokines levels were measured in sera using enzyme linked immunosorbent assay (ELISA). There was a significant negative correlation between IL-1β and IL-12 levels and lesion size and disease duration, while IL-37 and IL-35 levels were significantly positively correlated with both lesion size and disease duration. The analysis of the risk factors of higher circulatory levels of IL-37 in patients of mycetoma showed a negative significant association with IL-1β cytokine, where a unit increment in IL-1β will decrease the levels of IL-37 by 35.28 pg/ml. The levels of IL-37 among the patients with a duration of mycetoma infection ≤ 1 year were significantly low by an average of 18.45 pg/ml compared to patients with a mycetoma infection's duration of ≥ 5years (reference group). Furthermore, the risk factors of higher levels of IL-35 in mycetoma patients revealed a negative significant association with IL-12, as a unit increment in IL-12 decreases the levels of IL-35 by 8.99 pg/ml (p < 0.001). Levels of IL-35 among the patients with duration of mycetoma infection ≤ one year were significantly low on average by 41.82 pg/ml (p value = 0.002) compared to patients with a duration of mycetoma infection ≥ 5 years (reference group). In conclusion, this study indicates that both IL-35 and IL-37 are negatively associated with the levels of IL-1β and IL-12 in eumycetoma mycetoma infection; and high levels of IL-37 and IL-35 may have a negative impact on disease progression.
Topics: Adolescent; Adult; Aged; Case-Control Studies; Child; Enzyme-Linked Immunosorbent Assay; Female; Host-Pathogen Interactions; Humans; Interleukins; Madurella; Male; Middle Aged; Mycetoma; Risk Factors; Sudan; Young Adult
PubMed: 30946748
DOI: 10.1371/journal.pntd.0007098 -
Mycopathologia Apr 2019Mycetoma is a chronic granulomatous infectious disease that can affect the skin, subcutaneous tissue, fascia and bone. It can be caused by filamentous bacteria or fungi... (Review)
Review
Mycetoma is a chronic granulomatous infectious disease that can affect the skin, subcutaneous tissue, fascia and bone. It can be caused by filamentous bacteria or fungi and usually involves the legs and feet. Mycetoma is endemic in tropical and subtropical regions and is easily misdiagnosed in clinical practice because of its nonspecific clinical features and lack of awareness of the disease. Although mycetoma is very rare in mainland China, an increasing number of cases have been reported in recent years. Here, we report a case of mycetoma in a patient who was misdiagnosed many years before receiving the correct treatment, leading to disease progression and motion limitation. The grains that represent microorganismal colonies were important clues for diagnosis. We also reviewed reported cases of mycetoma in mainland China. The majority of cases were reported from southern regions. Actinomycetoma was more commonly reported than was eumycetoma. The causative agents of actinomycetoma included Nocardia brasiliensis, N. asteroides, N. otitidiscaviarum, N. ninae and Gordonia terrae, and the causative fungi of eumycetoma were identified as Madurella mycetomatis, Fonsecaea pedrosoi and Acremonium falciforme. Notably, the diagnosis of mycetoma was delayed from months to decades in all of the patients, likely due to a lack of clinical experience. Our literature review suggests the importance of increased awareness of mycetoma in clinical practice, especially in non-endemic regions. Further investigative studies are needed to determine the real incidence of the disease in China.
Topics: Adult; Aged; China; Female; Fungi; Histocytochemistry; Humans; Incidence; Male; Microscopy; Middle Aged; Mycetoma; Nocardia; Skin; Young Adult
PubMed: 30887177
DOI: 10.1007/s11046-019-00324-z -
Madurella mycetomatis infection of the buttock in an Eritrean refugee in Switzerland: a case report.Journal of Medical Case Reports Feb 2019Mycetoma is a neglected infectious disease caused by a fungus (eumycetoma) or bacteria (actinomycetoma); it is characterized by chronic local inflammation with sinus...
BACKGROUND
Mycetoma is a neglected infectious disease caused by a fungus (eumycetoma) or bacteria (actinomycetoma); it is characterized by chronic local inflammation with sinus formation and purulent discharge. Its course can be quite devastating because of the difficulty in diagnosing the infection and in eliminating the causative agent. Although endemic in many countries in the tropics and subtropics, the migration of Africans to Europe may increase the presence of this neglected disease in European countries. We present a case of an Eritrean patient living in a non-endemic country who was diagnosed as having an infection of Madurella mycetomatis in an atypical location in his body.
CASE PRESENTATION
We report the case of a 35-year-old African male refugee from Eritrea, living in Switzerland since 2015, who presented with a 1-year history of a painful soft tissue swelling associated with dark nodules in his right buttock. He mentioned having several previous surgeries after 2001 while he was in Eritrea due to recurrent abscess formation on this body area. In the previous months, the swelling had become more significant and nodules started draining a purulent fluid. An initial diagnostic hypothesis of buttock abscess was made and he was referred to a dermatologist for diagnostic confirmation and further specialist care due to the size and atypical presentation. After a punch biopsy, the diagnosis of eumycetoma was confirmed and cultures developed Madurella mycetomatis. The initial treatment approach consisted of oral treatment by itraconazole; however, a surgical resection of the lesions was finally needed.
CONCLUSIONS
Although rare, mycetoma should be diagnosed as early as possible to avoid long-lasting complications. Primary care physicians in European countries are frequently in the first line of care of migrant patients and therefore should be aware of the common and uncommon clinical presentations of mycetoma.
Topics: Adult; Antifungal Agents; Biopsy; Buttocks; Eritrea; Humans; Itraconazole; Madurella; Male; Mycetoma; Refugees; Switzerland
PubMed: 30755254
DOI: 10.1186/s13256-018-1962-y -
Cutis Nov 2018
Topics: Antifungal Agents; Diagnosis, Differential; Farmers; Fluconazole; Foot Dermatoses; Humans; Itraconazole; Madurella; Male; Middle Aged; Mycetoma
PubMed: 30566558
DOI: No ID Found