2´-fucosyllactose (2´-FL) is an abundant human milk oligosaccharide (HMO) in human milk with diverse biological effects. We recently reported ingested 2´-FL stimulates central nervous system (CNS) function, such as hippocampal long term potentiation (LTP) and learning and memory in rats. Conceivably the effect of 2´-FL on CNS function may be via the gut-brain axis (GBA), specifically the vagus nerve, and L-fucose (Fuc) may play a role. This study had two aims: (1) determine if the effect of ingested 2´-FL on the modulation of CNS function is dependent on the integrity of the molecule; and (2) confirm if oral 2´-FL modified hippocampal LTP and associative learning related skills in rats submitted to bilateral subdiaphragmatic vagotomy. Results showed that 2´-FL but not Fuc enhanced LTP, and vagotomy inhibited the effects of oral 2´-FL on LTP and associative learning related paradigms. Taken together, the data show that dietary 2´-FL but not its Fuc moiety affects cognitive domains and improves learning and memory in rats. This effect is dependent on vagus nerve integrity, suggesting GBA plays a role in 2´-FL-mediated cognitive benefits.
Currently, there are mounting data suggesting that HIV-1 acquisition in women can be affected by the use of certain hormonal contraceptives. However, in non-human primate models, endogenous or exogenous progestin-dominant states are shown to increase acquisition. To gain mechanistic insights into this increased acquisition, we studied how mucosal barrier function and CD4+ T-cell and CD68+ macrophage density and localization changed in the presence of natural progestins or after injection with high-dose DMPA. The presence of natural or injected progestins increased virus penetration of the columnar epithelium and the infiltration of susceptible cells into a thinned squamous epithelium of the vaginal vault, increasing the likelihood of potential virus interactions with target cells. These data suggest that increasing either endogenous or exogenous progestin can alter female reproductive tract barrier properties and provide plausible mechanisms for increased HIV-1 acquisition risk in the presence of increased progestin levels.
Objetivo: comunicar los datos de nutrición parenteral domiciliaria (NPD) obtenidos del registro del grupo NADYA-SENPE (www.nadya-senpe. com) del año 2017.Material y métodos: análisis descriptivo de los datos recogidos de pacientes adultos y pediátricos con NPD en el registro NADYA-SENPE desde el 1 de enero al 31 de diciembre de 2017.Resultados: se registraron 308 pacientes (54,5% mujeres), 38 niños y 270 adultos, procedentes de 45 hospitales españoles, en total 312 episodios, lo que representa una tasa de prevalencia de 6,61 pacientes/millón de habitantes/año 2017. El diagnóstico más frecuente en adultos fue “oncológico paliativo” (25,6%), seguido de “otros”. En niños fue la enfermedad de Hirschsprung, con seis casos (15,8%). El primer motivo de indicación fue síndrome de intestino corto tanto en niños (55,3%) como en adultos (33,7%). El tipo de catéter más utilizado fue el tunelizado tanto en niños (74,3%) como en adultos (38,2%). Finalizaron 81 episodios; la causa más frecuente fue el fallecimiento (62,9%) y que pasaron a vía oral (34,7%).Conclusiones: se mantiene el incremento progresivo de centros y profesionales colaboradores en el registro de pacientes que reciben NPD. Las principales indicaciones de NPD y de motivo de finalización se mantienen estables.
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