Eficacia del tinidazol en la profilaxis terapéutica de la colitis amebiana en pacientes con leucemia aguda de novo que reciben quimioterapia intensiva / Efficacy of tinidazole in the therapeutic prophylaxis of amoebic colitis in patients with de novo acute leukemia receiving intensive chemotherapy

Resumen Introducción: En México la seroprevalencia de la Entamoeba histolytica es del 8.4%. La amebiasis intestinal en pacientes con leucemia aguda de novo posterior al inicio de quimioterapia (QT), en el Servicio de Hematología del CMN 20 de Noviembre, es del 12%, aún si muestran test coprológico negativo basal. Objetivo: Averiguar si la administración de tinidazol, en pacientes con leucemia aguda y coprológico negativo, al principio de la QT, disminuye la incidencia de colitis amebiana durante la inducción a la remisión. Método: Prospectivo y no comparativo. Enfermos con diagnóstico de leucemia aguda de novo que inician QT de inducción y coprológico inicial. Se indicó tinidazol, 2 g/día durante 5 días en la primera semana de comenzada QT. Se vigilaron hasta que la inducción concluyó y se inició la recuperación hematopoyética. Resultados: 38 pacientes, 15 mujeres y 23 hombres con edad media de 44 años (16-72). Con leucemia aguda linfoblástica 19, con mieloblástica 16 y con promielocítica 3. Casos sin y con amebiasis intestinal, 35 y 3, respectivamente. Los pacientes con amebiasis solo recibieron tinidazol durante 3 días y se dio después de 2 días de empezada la QT. Conclusión: El tinidazol, en pacientes con leucemia aguda de novo que inician QT de inducción, es efectivo en la prevención de la amebiasis intestinal, durante la etapa de inducción, si se administra a 2 g/día, durante cinco días, a partir del día 1 de la QT.

Abstract Introduction: In Mexico, seroprevalence of Entamoeba histolytica is 8.4%. The intestinal amebiasis in patients with acute leukemia of novo, after the start of chemotherapy (CT) in the Hematology Service of the CMN 20 de Noviembre is 12%, even if patients show a negative baseline coprological test. Objective: To find out if the administration of tinidazole, in patients with acute leukemia and negative coprological test, at the beginning of the CT, decreases the incidence of amoebic colitis during the induction to remission. Method: Prospective and not comparative study. Patients with de novo diagnosis of acute leukemia who initiate induction and initial coprological CT. Tinidazole was indicated, 2 g/day for 5 days in the first week of CT started. They were monitored until the induction was concluded and hematopoietic recovery started. Results: 38 patients, 15 women and 23 men with a mean age of 44 years (16-72), with acute lymphoblastic leukemia 19, myeloblastic 16 and promyelocytic 3. Cases without and with intestinal amebiasis were 35 and 3, respectively. Patients with amebiasis only received tinidazole for 3 days and it was given 2 days after the CT started. Conclusion: Tinidazole, in patients with acute de novo leukemia who initiate induction CT, is effective in the prevention of intestinal amebiasis, during the induction stage, if administered at 2 g/day, for five days, starting on day 1 of the CT.

Tinidazol versus cefazolina na antibioticoprofilaxia de histerectomia vaginal e abdominal / Tinidazole versus cefazolin in antibiotic prophylaxis of vaginal and abdominal hysterectomy

OBJETIVO: comparar a eficácia do tinidazol e da cefazolina na antibioticoprofilaxia da morbidade febril e infecciosa pós-histerectomia vaginal e abdominal. MÉTODOS: estudo clínico randomizado, no qual as mulheres internadas para histerectomia foram aleatorizadas para um dos seguintes grupos de antibioticoprofilaxia: Grupo C (2 g de cefazolina EV na indução anestésica); Grupo T (2 g de tinidazol VO 12 horas antes da cirurgia); ou Grupo C+T (2 g de tinidazol VO 12 horas antes da cirurgia e 2 g de cefazolina EV na indução anestésica). Amostras cervicovaginais foram coletadas para culturas específicas e o diagnóstico de vaginose bacteriana (VB) foi baseado nos critérios de Amsel e Nugent. As pacientes foram reavaliadas sete e 30 dias após a cirurgia para sinais de morbidade febril e/ou infecciosa. Para avaliar as diferenças entre os três grupos, realizaram-se os testes do χ2 ou exato de Fisher com nível de significância de 5%. Calulou-se o poder da amostra (1-β) através do programa SAS. RESULTADOS: morbidade infecciosa sete dias após a histerectomia foi diagnosticada em 6,6% das mulheres, mas não houve diferença significativa na distribuição entre os três grupos estudados (p=0,12). Não diagnosticou-se morbidade febril ou infecciosa no pós-operatório imediato ou após 30 dias da cirurgia. A freqüência de VB no pré-operatório foi significativamente maior entre as mulheres submetidas à histerectomia vaginal do que naquelas submetidas à histerectomia abdominal (27 versus 7%, p=0,02). Também se observou freqüência maior de VB após 30 dias entre as mulheres submetidas à histerectomia vaginal (20 versus 8%), porém sem significância estatística (p=0,19). CONCLUSÕES: o uso do tinizadol, isoladamente ou em associação com cefazolina, não apresentou maior eficácia que o uso de apenas cefazolina na prevenção de morbidade febril ou infecciosa pós-histerectomia...

PURPOSE: to compare the efficacy of tinidazole and cephazolin on the febrile and infectious morbidity of post vaginal and abdominal hysterectomy antibiotic prophylaxis. METHODS: randomized clinical study, where women admitted to hospital for hysterectomy were randomly allocated in one of the following antibiotic prophylaxis groups: Group C (2 g of IV cephazolin in the anesthetic induction); Group T (2 g of tinidazole orally, 12 hours before the surgery); or Group C+T (2 g of tinidazole orally 12 hours before the surgery and 2g of IV cephazolin in the anesthetic induction). Cervicovaginal smears were collected for specific cultures and the diagnosis of bacterial vaginosis (BV) was based in Amsel and Nugent's criteria. The patients were reevaluated 7 and 30 days after the surgery for signs of febrile and/or infectious morbidity. The χ2 or the Fisher's exact test was used to assess differences among the three groups, with a significance level of 5%. The sample power (1-β) was calculated through the SAS program. RESULTS: seven days after the hysterectomy, infectious morbidity was diagnosed in 6.6% of the women, but with no significant difference among the three groups studied (p=0.12). There was no febrile or infectious morbidity at the immediate post-surgical period or after 30 days from the surgery. BV ratio at the pre-surgical period was significantly higher among the women submitted to vaginal hysterectomy, rather than among the ones submitted to abdominal hysterectomy (27 versus 7%, p=0.02). BV ratio was also higher after 30 days, among the women submitted to vaginal hysterectomy (20 versus 8%), though without statistical significance (p=0.19). CONCLUSIONS: the use of tinidazole, isolated or associated with cephazolin has not presented higher efficacy, than the use of cephazolin, alone to prevent febrile or infectious morbidity post hysterectomy...

Chronic the curative effect analysis of chronic perapical periodonitis in two kinds of methods treatment / 中国基层医药

Objective To study treatment method that improve the cronic perapical periodonitis. Methods To fill the tooth channal of chronic perapical periodonitis with a paste of doxycycline and tinidazol, or gutta percha point. Results Among 206 cases of teeth those succeesful rates of two methods were 97.09 % and 98.06 % after 2 years clinical observe. Conclusion To fill the tooth channal of cronic perapical periodonitis with a paste of doxycycline and tinidazol to treat the chronic perapical periodonitis,it shortens the treatment,simplifies operation,makes application more extensive and its nearly period effect is the same as that of using gutta percha point to fill the tooth.

Utilidad de 2 métodos coproparasitológicos y su empleo en un ensayo terapéutico antigiardiásico

Se realizó un estudio a 456 niños con edades de 1 a 5 años, pertenecientes a 4 guarderías infantiles del municipio San Miguel del Padrón, en el mes de noviembre de 1998; para evaluar el diagnóstico de Giardia lamblia y otros protozoos intestinales, utilizando comparativamente los métodos de diagnóstico coproparasitológicos de examen directo y la técnica de concentración de Ritchie o formol-éter. Además, se desarrolló un ensayo terapéutico, utilizando tinidazol y albendazol, para el tratamiento de la infección por G. lamblia. La técnica de concentración de Ritchie fue más efectiva que el examen microscópico directo para el diagnóstico de Giardia lamblia, Entamoeba histolytica/ Entamoeba dispar y Cyclospora cayetanensis y se demostró la mayor sensibilidad del examen seriado sobre el análisis de una sola muestra (p< 0,01). Por otra parte, el tinidazol demostró mayor eficacia que el albendazol para el tratamiento de la infección por G. lamblia, con un mayor porcentaje de curación (72 % vs. 34,6 %) (p< 0,01).

A study of 456 children aged 1-5 from 4 day care centers of San Miguel del Padrón municipality was conducted in November, 1998, to evaluate the diagnosis of Giardia lamblia and other intestinal protozoa by using comparatively the coproparasitological diagnostic methods of direct examination and Ritchie's concentration technique or formol-ether. Besides, a therapeutical trial was developed with tinidazole and albendazole for treating the infection caused by G. lamblia. Ritchie's concentration technique was more effective than the microscopic direct examination for diagnosing Giardia lamblia, Entamoeba histolytical/Entamoeba dispar and Cyclospora cayetanensis. It was demonstratyed that the serial examination was more sensitive than the analysis of just one sample (p< 0.01). On the other hand, tinidazole proved to be more efficient than albendazole to treat the infection produced by G. lamblia, with a greater cure percentage (72 % vs. 334.6 %), (p < 0.01).