ABSTRACT
La poliposis adenomatosa familiar (PAF) es una enfermedad autosómatica dominante caracterizada por la presencia de más de cien pólipos a nivel colorrectal. Se presenta el caso clínico de una paciente colectomizada por PAF que en la evolución desarrolla complicaciones extracolónicas de la enfermedad (adenomas duodenales), cuyo control y tratamiento es objeto de discusión.
Subject(s)
Adenomatous Polyposis Coli , Adenomatous Polyps , Colonic PolypsABSTRACT
The hepatitis A and E virus (HAV and HEV) share the fecal-oral mechanism. Hepatitis A is an endemo-epidemic disease in Uruguay but no data on the epidemiologic pattern of the HEV is available. The aims of this study were to update the epidemiologic behavior of the HAV in Montevideo and demonstrate the circulation of the HEV in Uruguay. Two hundred fourteen patients who consulted in the Policlínica de Nutrición y Digestivo were studied, 185 (86%) of whom were anti HAV (HAVAB, Abbot) positive. 81.8% (117/143) of those residents in Montevideo and 95.7% (68/71) of those who were from the inland were anti-HAV positive. From the Montevideo population 55.8% cases under the age of 40 years were anti-HAV positive and occurred in 97.6% of those older (p < 0.001). Considering the health care conditions of the positive patients in Montevideo, 95.6% (43/45) had septic chambers and 75.5% (74/98) disposed of toilet facilities (p < 0.001). It is concluded that although the global prevalence has been maintained since 1982, there is a change in the epidemiologic pattern with greater risk of infection in patients under the age of 40 years proceeding from areas without toilet facilities. The prevalence of total antibodies for HEV (EIA, Abbot) was 2.8% in this population. An association was observed with HAV in 2.2% (4/185). Moreover, a sample of 252 blood donors from the National Blood Service was analyzed with 5 being found to be anti HEV positive, with only 3 (1.2%) being confirmed in the Center for Disease Control in the United States. Although no definitive conclusions may be drawn from the present study, from an epidemiologic point of view, it has been shown that there is evidence of the circulation of HEV in Uruguay, in both the out patient and in blood donor populations.
Subject(s)
Hepatitis A/epidemiology , Hepatitis E/epidemiology , Adolescent , Adult , Age Factors , Aged , Female , Hepatitis A Antibodies , Hepatitis Antibodies/analysis , Hepatitis E virus/immunology , Hepatovirus/immunology , Humans , Male , Middle Aged , Prevalence , Sex Factors , Uruguay/epidemiologyABSTRACT
We assessed the bond strength of a composite resin to dentin that had been in contact with different materials. Flat dentin surfaces in freshly extracted human teeth were covered for 15 min or 48 h with a 1-mm layer of a variety of materials. The products were mechanically removed and a composite resin cylindrical specimen bonded to the dentin surface using the Prisma universal bond system. After 7 days immersion at 37 degrees C in water, the tensile bond strength was tested. The results were compared with those on dentin surfaces not in contact with any endodontic material. Statistical analysis showed that some materials (Grossmans Cement, IRM, Maisto's slowly resorbable paste) reduced the strength of the bond or even precluded bonding. It is necessary to develop techniques that will eliminate this when restoring endodontically treated teeth.
Subject(s)
Composite Resins , Dental Bonding , Dentin-Bonding Agents/adverse effects , Dentin/drug effects , Resin Cements , Root Canal Filling Materials/adverse effects , Adhesiveness , Analysis of Variance , Calcium Hydroxide , Calcium Sulfate , Camphor/adverse effects , Dental Cements , Dental Restoration, Permanent , Dental Restoration, Temporary , Drug Combinations , Humans , Hydrocarbons, Iodinated/adverse effects , Methylmethacrylates/adverse effects , Minerals , Polyvinyls , Tensile Strength , Zinc Oxide , Zinc Oxide-Eugenol Cement/adverse effectsABSTRACT
Se presenta el caso de un ciclo ovulatorio en una paciente portadora de amenorrea hipotalámica secundaria, cuya inducción de ovulación se efectuó mediante la administración oral de un antagonista opiáceo específico: Naltrexona, en una dosis de 50 mg/día por 26 días. El desarrollo folicular fue monitorizado mediante ultrasonografía transabdominal y mediciones plasmáticas seriadas de hormona luteinizante (LH), folículo estimulante (FSH), estradiol (E2) y progesterona (P4). Tanto el perfil hormonal como el seguimiento ecográfico fueron compatibles con ciclo ovulatorio con folículo único. Después de la discontinuación del tratamiento, la paciente se hizo nuevamente amenorreica declinando los valores de gonadotrofinas y estradiol a los niveles observados antes del inicio del tratamiento. Estos datos demuestran que la naltrexona puede ser un agente útil en la inducción de ovulación de pacientes con amenorrea hipotalámica
