The main participation of the enterohormone GLP-1 after bariatric surgery.

BACKGROUND: Numerous hypotheses are called to explain the beneficial effect on glucose metabolism after bariatric surgery. Some authors advocate for the secretion and release of various substances with endocrine functions for the explanation on this event. One of the substances most marked as effector, with contrasting effects but controversial data, is GLP-1. METHODS: Our study was performed in healthy male Wistar rats, to avoid the absence of confounding factors such as T2DM and obesity. In order to know the adaptation of GLP-1 secretion after surgery 5 groups were designated: two control groups (fasting and surgical stress), and three surgical groups (gastric sleeve, 50% resection of the midgut and the Roux en Y gastric bypass). After three months the GLP-1 synthesis in the different portions of the small intestine and the expression of the membrane receptors in pancreatic islet cells were studied by immunohistochemical techniques. RESULTS: There was a significant increase in the number of secretory cells in ileum, duodenum and jejunum in mixed (RYGB) and malabsorptive (RI50) surgical groups. An elevation of pancreatic receptors signal was also observed in the same techniques versus controls. CONCLUSIONS: Our data indicate that intestinal secretion of GLP-1 and its sensitivity to the pancreatic changes were increased like a response of an adaptive effect to the mechanical aggression of the digestive tube and as alteration of nutrient flow after surgery.

[Postoperative gastritis due to alkaline reflux. Our results]. / Gastritis postquirúrgica por reflujo alcalino. Nuestros resultados.

We present the results of a retrospective study carried out on 23 patients with alkaline gastric reflux (AGR) verified through endoscopy, biopsies and Tc99m HIDA, which were operated on in our department with Y of Roux, Braun, Henley as the correction techniques of this pathology. The criteria of surgical indications were evaluated in these patients as also the results obtained in reference to residual symptoms and changes in the histologic and gammagraphic patterns.

[Duodenal adenocarcinoma in celiac disease with late diagnosis and treatment]. / Adenocarcinoma duodenal en enfermedad celíaca de diagnóstico y tratamiento tardíos.

It seems to be a link between small intestine cancer and celiac disease. We describe here a patient who developed a duodenal carcinoma fifteen years after the celiac disease diagnosis. Tumor endoscopic study and biopsy sampling are the more useful diagnostic approach. This is usually difficult because the lesion is very small or there are rests of food biding the lesion. Poor clinical layout and a later diagnosis favour the development of metastasis. A wide segmental resection including lymph nodes is the best therapy for tumors of the second and third duodenal segments.

[Effect of gastric bypass on the cardiovascular risk and quality of life in morbid obese patients]. / Efecto del bypass gástrico sobre el riesgo cardiovascular y la calidad de vida en pacientes con obesidad mórbida.

OBJECTIVES: To determine the prevalence of major comorbidities of morbidity obese patients and to evaluate the gastric bypass effect on the weight status, cardiovascular risk and quality of life in these patients. METHODS: The evolution of weight, comorbidity, 10- year follow-up of cardiovascular risk (estimated by the Framingham risk score) and quality of life using the test BAROS (Bariatric Analysis and Reporting Outcome System) was analyzed in 162 patients with morbid obesity before and 2 years after gastric bypass. RESULTS: Body mass index (BMI) was reduced from 51.12 ± 7.22 to 29.94 ± 4.86 kg/m2 (72.85% loss of excess weight). Hypertension (HT), dyslipidemia and type 2 diabetes mellitus (T2DM) were resolved in 71.93%, 91.38% and 82.93% respectively (p < 0.001). Cardiovascular risk greater than 10% was reduced from 25.91% to 4.32% (p < 0.001). According to BAROS scale, surgery was positive in 95% of cases. CONCLUSIONS: Gastric bypass is very effective in weight loss; benefits in comorbidities, cardiovascular risk and quality of life.

Objetivos: Determinar la prevalencia de las principales comorbilidades asociadas a la obesidad mórbida y evaluar el efecto del bypass gástrico sobre el estado ponderal, riesgo cardiovascular y calidad de vida en estos pacientes. Métodos: Estudio descriptivo con medidas del cambio intrasujeto (antes-después) en una muestra de 162 pacientes de los resultados del bypass gástrico sobre la evolución ponderal, comorbilidades asociadas, riesgo cardiovascular a 10 años (estimado mediante las tablas de Framingham) y calidad de vida mediante el test BAROS (Bariatric Analysis and Reporting Outcome System). Resultados: El índice de masa corporal (IMC) se reduce de 51,12 ± 7,22 kg/m2 a 29,94 ± 4,86 kg/m2 (72,85% de sobrepeso perdido) y se resuelven la hipertensión arterial (HTA), la dislipemia y la diabetes mellitus tipo 2 (DMT2) en el 71,93%, 91,38% y 82,93% respectivamente (p < 0,001). El riesgo cardiovascular mayor del 10% se reduce del 25,91% al 4,32% (p < 0,001). Según la escala BAROS, el resultado de la cirugía fue favorable en el 95% de los casos. Conclusiones: La cirugía bariátrica mediante bypass gástrico demuestra ser muy efectiva para la reducción ponderal y comorbilidades asociadas, mejorando notablemente la calidad de vida.