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1.
Med Mycol ; 53(5): 462-9, 2015 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-25841053

RESUMEN

Utilizing matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) mass spectra for Candida glabrata typing would be a cost-effective and easy-to-use alternative to classical DNA-based typing methods. This study aimed to use MALDI-TOF for the typing of C. glabrata clinical isolates from various geographical origins and test its capacity to differentiate between fluconazole-sensitive and -resistant strains.Both microsatellite length polymorphism (MLP) and MALDI-TOF mass spectra of 58 C. glabrata isolates originating from Marseilles (France) and Tunis (Tunisia) as well as collection strains from diverse geographic origins were analyzed. The same analysis was conducted on a subset of C. glabrata isolates that were either susceptible (MIC ≤ 8 mg/l) or resistant (MIC ≥ 64 mg/l) to fluconazole.According to the seminal results, both MALDI-TOF and MLP classifications could highlight C. glabrata population structures associated with either geographical dispersal barriers (p < 10(-5)) or the selection of antifungal drug resistance traits (<10(-5)).In conclusion, MALDI-TOF geographical clustering was congruent with MPL genotyping and highlighted a significant population genetic structure according to fluconazole susceptibility in C. glabrata. Furthermore, although MALDI-TOF and MLP resulted in distinct classifications, MALDI-TOF also classified the isolates with respect to their fluconazole susceptibility profile. Further prospective studies are required to evaluate the capacity of MALDI-TOF typing to investigate C. glabrata infection outbreaks and predict the antifungal susceptibility profile of clinical laboratory isolates.


Asunto(s)
Antifúngicos/farmacología , Candida glabrata/aislamiento & purificación , Candidiasis/epidemiología , Farmacorresistencia Fúngica , Fluconazol/farmacología , Técnicas de Tipificación Micológica , Espectrometría de Masa por Láser de Matriz Asistida de Ionización Desorción , Candida glabrata/química , Candida glabrata/clasificación , Candida glabrata/efectos de los fármacos , Candidiasis/microbiología , Análisis por Conglomerados , Francia/epidemiología , Genotipo , Humanos , Pruebas de Sensibilidad Microbiana , Repeticiones de Microsatélite , Tipificación Molecular , Fenotipo , Topografía Médica , Túnez/epidemiología
2.
Tunis Med ; 93(8-9): 543-7, 2015.
Artículo en Francés | MEDLINE | ID: mdl-26815521

RESUMEN

BACKGROUND: Malaria has been eliminated in Tunisia since 1979, but the country remains, like all other countries harboring the vector, exposed to the potential risk of resurgence. OBJECTIVES: Describe the clinical and epidemiological investigation of 4 cases of autochthonous malaria in July 2013 and report the main actions of regional and national response. METHODS: Retrospective descriptive survey of the 4 clinical observations as well as the study of the regional report data of basic health care for the region of Tunis in 2013. RESULTS: Febrile table concomitant for 4 Tunisian male patients, aged from 21 to 27 years old ; fortuitous discovery of Plasmodium falciparum when checking thrombocytopenia of patient 1 ; diagnosis in cascade of other cases following the epidemiological investigation and field consultation with clinicians ; 3 simple forms and a neuromalaria of favorable evolution ; negative entomological survey for anopheles ; elimination of imported malaria and blood-borne ; airport malaria highly probable. The response included the establishment of a regional and national monitoring unit, an information program aimed at health professionals concerned and public opinion, the involvement of health and entomology teams for the detection and census of potential larval habitats and the implementation of local mosquito eradication measures. CONCLUSION: The clinical vigilance and competent biologist's eye is necessary to prevent the resurgence of this disease. The epidemiological surveillance system should be maintained and kept as well as the food safety standards monitoring at the borders.


Asunto(s)
Enfermedades Endémicas , Malaria Falciparum/epidemiología , Adulto , Humanos , Masculino , Estudios Retrospectivos , Túnez/epidemiología , Adulto Joven
3.
Parasitol Res ; 113(7): 2435-43, 2014 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-24825311

RESUMEN

The results of entomological studies carried out in the governate of Monastir (Tunisia) in 2009-2010 (captures and emergences from muds) focusing on Culicoides species are presented in the present study. Identification of Culicoides at the species level is based on morphological characters, and a molecular study has been carried out based on mitochondrial DNA cytochrome C oxidase I gene (COI) and D1 and D2 domains of the 28S rDNA. The DNA sequences reported here are related to 10 species (on 25 known) of Culicoides described in Tunisia: Culicoides cataneii-gejgelensis, Culicoides circumscriptus, Culicoides imicola, Culicoides jumineri, Culicoides kingi, Culicoides langeroni, Culicoides newsteadi, Culicoides paolae, Culicoides puncticollis and Culicoides sahariensis. DNA sequencing of the COI gene and D1D2 domains discriminated all morphologically determined species. The choice of D1D2 domains considered as a conserved region is informative for Culicoides species identification. The molecular analyses of COI has grouped both C. circumscriptus, C. puncticollis within two clusters and C. newsteadi within five subclusters. However, C. newsteadi shows relatively deep intraspecific divergence using COI sequences.


Asunto(s)
Ceratopogonidae/clasificación , ADN Mitocondrial/genética , Complejo IV de Transporte de Electrones/genética , ARN Ribosómico 28S/genética , Animales , Ceratopogonidae/genética , Filogenia , Filogeografía , ARN Ribosómico 28S/efectos de los fármacos , Análisis de Secuencia de ADN , Túnez
4.
Pathol Biol (Paris) ; 59(6): e119-23, 2011 Dec.
Artículo en Francés | MEDLINE | ID: mdl-19896289

RESUMEN

The cutaneous leishmaniasis (CL) is a parasitic disease which represents a serious problem for the public health not only in Tunisia but also all over the world. Its diagnosis is based on the techniques which are usually used, direct examination and in vitro culture. Because of several factors, these techniques lack sensitivity. The molecular biology, which is indeed more rapid and more sensitive, has proved its effectiveness in diagnosis of the CL. There are two main aims for our research work. First, to show the contribution of the Polymerase Chain Reaction (PCR) during the diagnosis of CL (of course by comparing the results obtained when using this technique with those found through the direct examination); second, to compare the two pairs of primers which amplify the leishmanien gene coding for the 18s ribosomal sub-unit: the pair R221/R332 (PCR1) and the pair Lei70L/Lei70R (PCR2). Our work was carried out upon 299 samples. One hundred and eighty-eight of them were positive using the direct examination and/or the PCR and 111 were negative. Only two samples were positive using of course the direct examination in comparison with 74 which were positive when using only the PCR (PCR1 and/or PCR2). Among these 74 samples, 64 where positive using only PCR2 in comparison with two samples which were positive using only PCR1. The eight remaining samples were at once positive for the PCR1 and the PCR2. The PCR (notably the PCR2) has proved a more significant percentage of positivity in comparison with direct examination: 98.98% for the PCR and 60.6% for direct examination.


Asunto(s)
Cartilla de ADN , Leishmaniasis Cutánea/diagnóstico , Técnicas de Diagnóstico Molecular/métodos , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Niño , Preescolar , Conducta de Elección , Cartilla de ADN/química , Cartilla de ADN/farmacología , ADN Protozoario/análisis , ADN Protozoario/genética , ADN Protozoario/aislamiento & purificación , Femenino , Humanos , Lactante , Leishmaniasis Cutánea/parasitología , Masculino , Persona de Mediana Edad , Técnicas de Diagnóstico Molecular/normas , Reacción en Cadena de la Polimerasa/métodos , Reacción en Cadena de la Polimerasa/normas , Sensibilidad y Especificidad , Túnez , Adulto Joven
5.
Pathol Biol (Paris) ; 59(4): 234-9, 2011 Aug.
Artículo en Francés | MEDLINE | ID: mdl-19481368

RESUMEN

INTRODUCTION: Intestinal microsporidiosis is recognised as an important cause of opportunistic parasitosis in immunocompromised patients, especially HIV-infected patients. Enterocytozoon bieneusi is the common causal agent. The diagnosis of intestinal microsporidiosis has usually based on microscopic detection of the spores of microsporidia species in stool samples, requires additional staining techniques as Modified Weber's trichrome stain. However, the detection of the spores can be difficult and species determination, which is important for defining the appropriate treatment, is impossible. Polymerase chain reaction (PCR)-based methods have been successfully used for detection of microsporidian infections. They are more sensitive and are able to identify microsporidia species. The purpose of this study is to identify E. bieneusi to adapt treatment and assess the true prevalence of the intestinal microsporidiosis due to this species in compromised patients in Tunisia. PATIENTS AND METHODS: One hundred and eighteen stools from immunocompromised patients, with a symptomatology in favour of the intestinal microsporidiosis, were analysed using light microscopy after staining with Modified Weber's trichrome stain and PCR. RESULTS: Only four were positive by Modified Weber's trichrome stain whereas eleven stools were positive by PCR, giving a prevalence of 20% in HIV-infected patients and 5,35% in human immunodeficiency virus-negative patients. CONCLUSION: This study confirms the usefulness of PCR in the diagnosis of the intestinal microsporidiosis due to E. bieneusi. Indeed, PCR has greater sensitivity than Modified Weber's trichrome stain and can identify the species of microsporidia in order to adapt the treatment.


Asunto(s)
Enterocytozoon/genética , Enterocytozoon/aislamiento & purificación , Heces/microbiología , Huésped Inmunocomprometido , Microsporidiosis/microbiología , Reacción en Cadena de la Polimerasa , Infecciones Oportunistas Relacionadas con el SIDA/microbiología , Adolescente , Adulto , Femenino , Infecciones por VIH/complicaciones , Infecciones por VIH/microbiología , Humanos , Enfermedades Intestinales/microbiología , Masculino , Microsporidiosis/complicaciones , Microsporidiosis/epidemiología , Túnez/epidemiología
6.
Med Trop (Mars) ; 70(2): 135-6, 2010 Apr.
Artículo en Francés | MEDLINE | ID: mdl-20486346

RESUMEN

Human cutaneous myiasis is a common dermatosis in tropical zones. The purpose of this report is to describe the first imported case of furuncular myiasis caused by Dermatobia hominis (human botfly) in Tunisia. The patient was a man returning from Bolivia. Furuncular myiasis was suspected based on epidemiological data and clinical examination showing pruriginous elevated lesions. Diagnosis was confirmed by identification of Dermatobia hominis larvae. Treatment was based mainly on manual removal of larvae. Since furuncular myiasis is unknown in Tunisia, it is important to remember this parasitic disease in differential diagnosis in patients presenting boil-like inflammatory papules following travel to Latin America.


Asunto(s)
Dípteros/patogenicidad , Miasis/diagnóstico , Adulto , Animales , Bolivia , Diagnóstico Diferencial , Dípteros/fisiología , Femenino , Humanos , América Latina , Masculino , Oviposición , Viaje , Túnez
7.
Med Trop (Mars) ; 70(3): 269-73, 2010 Jun.
Artículo en Francés | MEDLINE | ID: mdl-20734597

RESUMEN

BACKGROUND: Mycetoma is a chronic infection of cutaneous and subcutaneous tissue that can be caused by fungi or bacteria. It is endemic in tropical and subtropical areas but rare in Tunisia. PURPOSE: The purpose of this report is to describe epidemioclinical features, treatment and outcomes in patients presenting mycetoma in Tunisia. PATIENTS AND METHODS: The files of all patients treated for mycetoma in the Dermatology Department of La Rabta Hospital in Tunisia from 1982 to 2006 were retrospectively reviewed. RESULTS: A total of 15 cases of mycetoma were recorded during the study period. There were 6 men and 9 women with a mean age of 53.2 years. The most common clinical presentation was infiltrated erythematous plaques with sinus tracts (fistulas). Lesions were located on the foot in 12 cases. Thirteen patients reported the presence of grains in fluid discharging from fistulas. The cause of mycetoma was actinomycetes, i.e., Actinomadura madurae, in 9 cases and fungus in 6 cases including 3 due to Madurella mycetomi and 2 to Pseudallesheria boydii. Treatment was based on oral antibiotics for actinomycetoma and oral antifungals for eumycetoma. CONCLUSIONS: Mycetoma in Tunisia is still uncommon with a slight female predominance. The foot is the most frequent location. Diagnosis can be accomplished by direct mycologic examination, culture, and histololgy. There is no consensus on treatment that is often prolonged with numerous relapses.


Asunto(s)
Actinobacteria/aislamiento & purificación , Micetoma/diagnóstico , Micetoma/epidemiología , Adulto , Anciano , Antibacterianos/uso terapéutico , Antifúngicos/uso terapéutico , Quimioterapia Combinada , Femenino , Humanos , Masculino , Persona de Mediana Edad , Micetoma/tratamiento farmacológico , Micetoma/microbiología , Prevalencia , Estudios Retrospectivos , Factores de Riesgo , Enfermedades Cutáneas Bacterianas/diagnóstico , Enfermedades Cutáneas Bacterianas/epidemiología , Resultado del Tratamiento , Túnez/epidemiología
8.
Sante ; 20(1): 21-9, 2010.
Artículo en Francés | MEDLINE | ID: mdl-20483704

RESUMEN

INTRODUCTION: Intestinal microsporidiosis is an opportunistic parasitological infection affecting mainly immunocompromised patients, particularly those infected with HIV. PURPOSE: The purpose of this study was to analyse the epidemiological and clinical characteristics of intestinal microsporidiosis and the treatments available for it. MATERIAL AND METHODS: This retrospective study examined records collected over a 13-year period (from January 1995 through December 2007). It included 572 immunocompromised patients (279 HIV-infected patients and 293 without HIV infection) with symptoms suggesting intestinal microsporidiosis. All were tested systematically for microsporidia spores by modified (Weber's) Trichrome staining. RESULTS: Fourteen patients (10 men, 4 women) were diagnosed with intestinal microsporidiosis, for a prevalence of 2.4% overall, 3.6% in HIV-infected patients and 1.4% in those without HIV infection. Intestinal microsporidiosis affected 10 HIV-infected patients, 70% of whom had a CD4 count <100 cells/mm3. Their mean age was 30+/-15 years (range: 15 months to 48 years). The average age of HIV-infected patients (36 years) was significantly higher than of those without HIV infection (15 years). Thirteen patients had symptoms, most frequently diarrhea (11 cases), sometimes associated with dehydration (5 cases). Eight patients (57%) received only symptomatic treatment, and 4 (28.6%) received albendazole. No treatment was recommended in 2 cases (14.3%). Clinical course was marked by improvement in 6 cases, death in 5, and persistence of asymptomatic carriage in one. Two patients were lost to follow-up. CONCLUSION: Intestinal microsporidiosis is a parasitological disease that mainly affects AIDS patients with CD4 counts <100 cells/mm3. Its diagnosis requires special techniques. Its symptomatology is dominated by chronic diarrhea that can cause dehydration. Effective treatment requires identification of the species.


Asunto(s)
Enfermedades Intestinales/epidemiología , Microsporidiosis/epidemiología , Adolescente , Adulto , Niño , Femenino , Infecciones por VIH/complicaciones , Infecciones por VIH/microbiología , Humanos , Huésped Inmunocomprometido , Incidencia , Enfermedades Intestinales/microbiología , Masculino , Microsporum , Persona de Mediana Edad , Prevalencia , Estudios Retrospectivos , Factores de Riesgo , Estaciones del Año , Túnez/epidemiología
9.
Pathol Biol (Paris) ; 57(5): 373-7, 2009 Jul.
Artículo en Francés | MEDLINE | ID: mdl-19038508

RESUMEN

Diagnosis of pneumocystis pneumonia is usually based on clinical features and X-rays photography and confirmed in the laboratory by visualisation of Pneumocystis organisms in stained preparations of respiratory specimens using several techniques (Gomori-Grocott, May-Grünwald Giemsa, bleu de toluidine O). Actually, PCR has considerably increased sensitivity of detection of Pneumocystis. The aim of this study is to compare conventional PCR results to those of staining techniques (Gomori-Grocott, May-Grünwald Giemsa) in addition to the X-ray and clinical findings in order to evaluate the contribution of each method. Sixty-four respiratory specimens were collected from 54 immuno-compromised patients with clinical symptoms of pulmonary infection. We diagnosed pneumocystis pneumonia in 16 patients according to staining techniques and/or typical clinical and radiological findings and/or response to treatment. Of the 15 patients, 14 were positive by PCR and only five were positive by direct examination, yielding a sensitivity and specificity of 93.3 and 87.1% for PCR and 33.3 and 100% for staining techniques. Conventional PCR provides a sensitive and objective method for the detection Pneumocystis jiroveci from less invasive sample.


Asunto(s)
Pneumocystis carinii/aislamiento & purificación , Neumonía por Pneumocystis/diagnóstico , Reacción en Cadena de la Polimerasa , Coloración y Etiquetado/métodos , Infecciones Oportunistas Relacionadas con el SIDA/diagnóstico , Infecciones Oportunistas Relacionadas con el SIDA/diagnóstico por imagen , Infecciones Oportunistas Relacionadas con el SIDA/microbiología , Adolescente , Adulto , Líquido del Lavado Bronquioalveolar/microbiología , Colorantes , ADN de Hongos/análisis , Eosina Amarillenta-(YS) , Reacciones Falso Positivas , Femenino , Neoplasias Hematológicas/complicaciones , Humanos , Huésped Inmunocomprometido , Síndromes de Inmunodeficiencia/complicaciones , Lactante , Masculino , Metenamina , Azul de Metileno , Persona de Mediana Edad , Neumonía por Pneumocystis/diagnóstico por imagen , Neumonía por Pneumocystis/microbiología , Radiografía , Cloruro de Tolonio , Adulto Joven
10.
Ann Biol Clin (Paris) ; 67(3): 325-32, 2009.
Artículo en Francés | MEDLINE | ID: mdl-19411235

RESUMEN

This is a retrospective study including 17 patients with rhino-orbito-cerebral mucormycosis diagnosed in a period of 16 years, between 1992 and 2007, in 8 men and 9 women. All patients were diabetic with ketoacidosis diabetes in 8 cases. Necrosis facial and ophthalmic symptoms were the most frequent presenting manifestations. The diagnosis was confirmed by mycological examination, with or without histopathology, identifying Rhizopus oryzae in 12 cases. Treatment consisted in systemic amphotericin B combined with surgical treatment in only 7 cases. The mortality rate was high (65%) due principally to the delay in diagnosis and absence of surgical treatment.


Asunto(s)
Anfotericina B/uso terapéutico , Complicaciones de la Diabetes/microbiología , Mucormicosis/complicaciones , Antifúngicos/uso terapéutico , Complicaciones de la Diabetes/tratamiento farmacológico , Complicaciones de la Diabetes/patología , Complicaciones de la Diabetes/cirugía , Cetoacidosis Diabética/tratamiento farmacológico , Cetoacidosis Diabética/patología , Femenino , Humanos , Masculino , Mucormicosis/tratamiento farmacológico , Mucormicosis/patología , Mucormicosis/cirugía , Enfermedades Nasales/tratamiento farmacológico , Enfermedades Nasales/microbiología , Enfermedades Nasales/patología , Enfermedades Nasales/cirugía , Enfermedades Orbitales/tratamiento farmacológico , Enfermedades Orbitales/microbiología , Enfermedades Orbitales/patología , Enfermedades Orbitales/cirugía , Enfermedades de los Senos Paranasales/tratamiento farmacológico , Enfermedades de los Senos Paranasales/microbiología , Enfermedades de los Senos Paranasales/patología , Enfermedades de los Senos Paranasales/cirugía , Estudios Retrospectivos , Rhizopus/aislamiento & purificación , Túnez/epidemiología
11.
Acta Trop ; 106(2): 132-6, 2008 May.
Artículo en Inglés | MEDLINE | ID: mdl-18402923

RESUMEN

The different clinical forms of leishmaniasis are the result of both the immunological status of individuals and the species of the parasite causing the infection. In Mediterranean countries, the Leishmania infantum complex groups zymodemes which are responsible for visceral, cutaneous and exceptionally cutaneomucosal or mucosal leishmaniasis. We report in this study a synthesis concerning 254 cases of L. infantum that have been characterized at the "Laboratoire de Parasitologie" of the Rabta Hospital. The strains were isolated from human cases of visceral leishmaniasis (VL) and cutaneous leishmaniasis (CL) by culture on NNN medium: 156 VL cases and 98 CL cases. The isoenzymatic characterization revealed three zymodemes of L. infantum. * L. infantum MON 1, a common zymodeme of VL,occurred in 154 cases (61%): 147 VL (95%) and 7 CL (5%). All CL cases were from the northern provinces, six of them occurring during an epidemic disease in 2001. * L. infantum MON 24, a common zymodeme of CL in the north, occurred in 98 cases (38.5%): 91 CL (93%) and 7 VL (7%). The seven VL cases were immunocompetent children aged from 8 months to 9 years and native of northern Tunisia. Two of the CL cases were from central regions of the country. This is the first time that cases from these regions are reported. * L. infantum MON 80, an uncommon zymodeme in Tunisia, occurred in two VL cases (0.5%): two children aged 7 and 5. The small number of strains of this zymodeme does not allow understanding of its epidemiological role. The results of this study indicate a low enzymatic variability of L. infantum in the country. However, our study includes only human strains and should be extended to animal ones (dogs, rodents and sand flies). This would lead to a better understanding of the epidemiology of leishmaniasis in Tunisia.


Asunto(s)
Isoenzimas/análisis , Leishmania infantum/clasificación , Leishmania infantum/enzimología , Leishmaniasis Cutánea/parasitología , Leishmaniasis Visceral/parasitología , Adolescente , Adulto , Anciano , Animales , Niño , Preescolar , Perros , Femenino , Humanos , Lactante , Focalización Isoeléctrica/métodos , Leishmania infantum/aislamiento & purificación , Leishmaniasis Cutánea/epidemiología , Leishmaniasis Visceral/epidemiología , Masculino , Persona de Mediana Edad , Proteínas Protozoarias/análisis , Túnez/epidemiología
12.
Parasite ; 15(2): 143-50, 2008 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-18642507

RESUMEN

There has been a steady increase of visceral leishmaniasis during the past 20 years in Tunisia. In this study, we assess the value of two optimised PCR versus those of classical methods for the diagnosis of human visceral leishmaniasis. 106 samples were collected from 53 cases of pediatric visceral leishmaniasis. Peripheral blood and bone marrow samples were analysed both by parasitological methods (direct examination, leukocytoconcentration (LCC) and culture) and by PCR methods with two primer pair (R221/R332 and Lei 70L/Lei 70R). We diagnosed visceral leishmaniasis in all patients: 44 cases were diagnosed by culture (83%), 42 by direct examination of bone marrow (79%), 17 by LCC (32%), and 53 positive cases with both PCR assays (R221/R332 and/or Lei 70L/Lei 70R) (100 %). Regarding each PCR assay, for blood samples, the difference between the sensitivities of PCR Lei 70L/Lei 70R (86,8%) and PCR R221/R332 (17 %) is statistically significant with p-value 0.025. For bone marrow, the sensitivities of the two PCR methods were respectively 96,2% (Lei 70L/Lei 70R) and 75,5% (R221/R332). On the whole, PCR Lei 70L/Lei 70R was more effective than PCR R221/R332 and conventional methods for the two biological samples. Moreover, the requirement of less invasive sample using blood has the advantage of being repeatable for screening and for post therapeutic monitoring.


Asunto(s)
Médula Ósea/parasitología , Leishmania/aislamiento & purificación , Leishmaniasis Visceral/diagnóstico , Reacción en Cadena de la Polimerasa/normas , Pruebas Serológicas/normas , Animales , Niño , Humanos , Parasitemia/diagnóstico , Reacción en Cadena de la Polimerasa/métodos , Sensibilidad y Especificidad , Pruebas Serológicas/métodos , Túnez
13.
Bull Soc Pathol Exot ; 101(1): 29-31, 2008 Feb.
Artículo en Francés | MEDLINE | ID: mdl-18432004

RESUMEN

Three clinico-epidemiological forms of cutaneous leishmaniasis (CL) were described in Tunisia: the zoonotic CL (ZCL) epidemic which occurred in the centre of the country caused by Leishmania major MON-25, the chronic CL (CCL) In the south-east of the country caused by Leishmania killicki MON-8 and the sporadic CL In the North (SCL) caused by Leishmania infantum MON-24. The latter form, described in 1991, prevails in northern Tunisia with approximately thirty cases per year. Its vector, unknown for a long time could be according to the last publications, Phlebotomus perfiliewi or Phlebotomus langeroni; however, its reservoir remains unknown until now. The systematic isoenzymatic characterization permits to identify a great number of strains improving then knowledge on the eco-epidemiology of the disease. Indeed, changes were noted in the geographical distribution of these clinical forms: extension of the ZCL to the North and South, extension of the CCL to North and the SCL to the centre. We report in this note the first mention of L. infantum MON-24 in the two provinces of the centre of Tunisia: Kairouan and Sidi Bouzid, confirming the extension of the SCL to the Centre.


Asunto(s)
Leishmania infantum/clasificación , Leishmaniasis Cutánea/parasitología , Adolescente , Animales , Preescolar , Dermatosis Facial/parasitología , Femenino , Humanos , Focalización Isoeléctrica , Isoenzimas/análisis , Leishmania infantum/aislamiento & purificación , Úlcera Cutánea/parasitología , Túnez , Extremidad Superior/parasitología
14.
Ann Biol Clin (Paris) ; 65(1): 13-9, 2007.
Artículo en Francés | MEDLINE | ID: mdl-17264034

RESUMEN

Over the past decade, the incidence of opportunistic fungal infections continues to increase. Candida albicans remains the most important pathogenic yeast. Since 1995, a novel Candida specie has been identified and named Candida dubliniensis. This specie shares many phenotypic characteristics with Candida albicans, including the ability to produce germ tubes and chlamydospores. These similarities have caused significant problems in the identification of Candida dubliniensis. A large variety of methods have been developed for the discrimination of these two species. They included the sensitivity to different stress (temperature, salinity), growth on chromogenic and specific medium and carbohydrate assimilation. However, these methods can fail to assert the identification of Candida dubliniensis, but molecular typing methods are highly reliable and can confirm the identification. However, they are too complex for routine use. The identification of this specie in routine is essential in order to further understand the epidemiology, to better define the role of Candida dubliniensis as a potential pathogen and its susceptibility to develop a resistance to the antifungal agents. So, new methods have to be developed.


Asunto(s)
Candida/clasificación , Candida/aislamiento & purificación , Antifúngicos/farmacología , Técnicas de Tipificación Bacteriana , Candida/genética , Enfermedades Transmisibles Emergentes/tratamiento farmacológico , Enfermedades Transmisibles Emergentes/microbiología , Farmacorresistencia Fúngica , Ecosistema , Humanos , Fenotipo
15.
Bull Soc Pathol Exot ; 100(4): 282-6, 2007 Oct.
Artículo en Francés | MEDLINE | ID: mdl-17982860

RESUMEN

The purpose of this study was to evaluate in a retrospective analysis, cases of Mediterranean visceral leishmaniasis (VL) diagnosed in adults during a 20-year period in a department of infectious diseases. Demographic data, clinical and laboratory features and therapeutic findings were considered. During the study period, 22 cases of VL were diagnosed, and 6 (27%) were associated with HIV infection. Fever and splenomegaly were observed in all cases. Anaemia was constant. The anti-leishmanial IF titer was positive among 21 patients (95%). Smears from bone marrow aspiration were positive at microscopy in 95% of cases. Zymodeme analysis was carried out in nine isolates. L. infantum zymodeme MON-1 was characterized in all cases. Seventeen patients (77%) received meglumine antimoniate (MA) (20 mg SbV/kg per day) and 5 (23%) patients amphotericin B (AB) (0.5-1 mg/kg per day) for an average period of 25 days (10-49 days). Adverse events occurred in 7 patients (32%), among them 4 received AB. Clinical cure was achieved with success in 21 patients (95%). After a successful MA treatment of the initial episode, VL relapse was observed in one HIV-positive patient. Only one HIV-positive patient died from neurological disorders. VL is rare in adults. However, its incidence is increasing everywhere in the world, because of HIV-related cases. Its prognosis depends on the precocity of diagnosis and treatment.


Asunto(s)
Leishmaniasis Visceral/epidemiología , Adulto , Anfotericina B/uso terapéutico , Anemia/epidemiología , Animales , Antimonio/uso terapéutico , Antiprotozoarios/uso terapéutico , Fiebre/epidemiología , Infecciones por VIH/epidemiología , Humanos , Leishmania infantum/clasificación , Meglumina/uso terapéutico , Antimoniato de Meglumina , Compuestos Organometálicos/uso terapéutico , Recurrencia , Estudios Retrospectivos , Esplenomegalia/epidemiología , Resultado del Tratamiento , Túnez/epidemiología
16.
Ann Dermatol Venereol ; 134(10 Pt 1): 743-7, 2007 Oct.
Artículo en Francés | MEDLINE | ID: mdl-17978711

RESUMEN

BACKGROUND: Onychomycosis is more frequent in the elderly. The aim of this Tunisian study was to determine the prevalence and the epidemiological, clinical and mycological characteristics of onychomycosis in elderly subjects. PATIENTS AND METHODS: This was a prospective study performed over a 7-month period (October 2005 - April 2006). The fingernails and toenails of 290 new consecutive patients aged 65 years and over presenting at general practitioners' clinics were examined by certified dermatologists. Clinical signs of onychomycosis were observed in 120 patients. 137 nail samples and 103 skin scrapings were obtained from these subjects. RESULTS: The study population comprised 51 men and 69 women (sex ratio M/F: 0.74) of mean age 72.33 +/- 6.2 years. Fingernails were involved in 28 cases (20.4%), toenails in 109 cases (79.5%), and both fingernails and toenails in 17 cases (12.4%). On average, patients had 2.7 infected fingernails and 3.9 infected toenails. The big toenail and thumbnail were affected most often respectively on the feet and on the hands. Among the clinical presentations seen, distolateral subungual onychomycosis was the most common clinical presentation, on both the feet and the hands. Mycologically confirmed onychomycosis was detected in 110 of 137 nail samples. The rate of positivity was 80.3%. The prevalence of onychomycosis was confirmed in 34.1% of patients examined (99/290). Dermatophytes were the main agents causing onychomycosis in our population (79%). The most frequently detected fungus was Trichophyton rubrum (72.1%). In toenail infections, dermatophytes were most frequently isolated (97%), while in fingernail infections, yeasts were most often isolated (75%), with Candida albicans being dominant (60%). No moulds were isolated in either the hands or the feet. The same fungus was isolated in both skin scrapings and nail samples from 33 patients. Trichophyton rubrum was detected in 28 cases. CONCLUSION: This study confirms a higher prevalence of onychomycosis in the elderly. It shows dermatophytes, in particular Trichophyton rubrum, to be the most frequently isolated causative agents in onychomycosis in the elderly, followed by yeasts, with no moulds being detected.


Asunto(s)
Onicomicosis/epidemiología , Anciano , Anciano de 80 o más Años , Femenino , Humanos , Masculino , Prevalencia , Estudios Prospectivos
17.
Tunis Med ; 85(2): 150-4, 2007 Feb.
Artículo en Francés | MEDLINE | ID: mdl-17665664

RESUMEN

BACKGROUND: Schistosomia haematobium infection has been eradicated from Tunisia since 1980. Only some imported cases are noted each year. AIM: The authors report nine cases of Schistosomia haematobium infection diagnosed. METHODS: The diagnosis was carried out within the framework of a survey carried out by the service of Pediatry of the hospital Mongi Slim of Tunis concerning 20 students of African extraction. RESULTS: Hematuria was found in all cases. Schistosomia haematobium infection is diagnosed in all patients by urinary parasitologic examination. Radiological evaluation had revealed mild uroradiologic abnormalities in five patients. All patients were treated by praziquantel. Remission was confirmed by urinary sterilization. Radiologic abnormilities persisted in 3 patients. CONCLUSION: Radiological evaluation and regular follow-up after treatment of students with Schistosomia haematobium infection is required.


Asunto(s)
Esquistosomiasis Urinaria/diagnóstico , Adolescente , Adulto , Antihelmínticos/uso terapéutico , Niño , Hematuria/parasitología , Humanos , Masculino , Praziquantel/uso terapéutico , Esquistosomiasis Urinaria/tratamiento farmacológico
18.
Trans R Soc Trop Med Hyg ; 99(7): 499-501, 2005 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-15869775

RESUMEN

The first three documented cases of anthroponotic cutaneous leishmaniasis due to Leishmania killicki are reported from locations outside the original focus of Tataouine in southeast Tunisia. Three strains were isolated from three patients from Gafsa, Sidi Bouzid and Seliana indicating an extension of this parasite's range towards the centre and the north of Tunisia.


Asunto(s)
Leishmaniasis Cutánea/parasitología , Adolescente , Animales , Niño , Preescolar , Enfermedades Endémicas , Humanos , Isoenzimas/análisis , Leishmania/enzimología , Leishmania/aislamiento & purificación , Leishmaniasis Cutánea/enzimología , Leishmaniasis Cutánea/epidemiología , Masculino , Túnez/epidemiología
19.
Trans R Soc Trop Med Hyg ; 99(10): 762-8, 2005 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-16095641

RESUMEN

We assessed the efficiency of a PCR method in establishing the diagnosis of cutaneous leishmaniasis (CL) in Tunisian patients. Four hundred and thirty specimens collected passively from patients with cutaneous ulcers suggestive of leishmaniasis attending health centres for diagnosis were included in the study. Dermal scrapings were analysed both by parasitological (examination of Giemsa-stained smears and in vitro cultivation) methods and by a genus-specific PCR detecting a fragment of the 18S rRNA gene. Microscopy revealed amastigotes in 245 samples (57.0%) and in vitro cultivation gave positive results in 88 cases (20.5%), whereas PCR detected Leishmania in 301 samples (70%). The sensitivities inferred from our results were 99.3%, 80.8% and 29% for PCR, microscopic examination and in vitro cultivation, respectively. The different forms of CL in this country are caused by three species of Leishmania and are treated with the same protocol. Of 303 well-documented cases in our study, 99% were probably caused by Leishmania major and 1% by Leishmania infantum. The lack of species-specific diagnosis is not known to affect treatment or prognosis in Tunisia. These data support the incorporation of PCR into diagnostic strategies for CL, particularly in Tunisia.


Asunto(s)
Leishmaniasis Cutánea/diagnóstico , Reacción en Cadena de la Polimerasa/métodos , Animales , Femenino , Humanos , Leishmania/aislamiento & purificación , Leishmaniasis Cutánea/parasitología , Masculino , Sensibilidad y Especificidad , Túnez
20.
Parasite ; 12(4): 359-61, 2005 Dec.
Artículo en Francés | MEDLINE | ID: mdl-16402569

RESUMEN

Following the arrival of blue-tongue in Tunisia, the authors report the results of the first survey made in Monastir. They show the existence of nine species of Culicoides, three of which are new to the country IC. paolae, C. imicola, C. newsteadi), that now brings to 22 the number of the known species.


Asunto(s)
Ceratopogonidae/clasificación , Ceratopogonidae/parasitología , Animales , Femenino , Masculino , Filogenia , Túnez
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