Patient-related factors related to prolonged preparation-to-colonoscopy interval and insufficient purgative intake before colonoscopy: A post-hoc observational study.

Objectives: Prolonged preparation-to-colonoscopy (PC) interval and insufficient purgative intake (PI) are two important indicators for quality of bowel preparation for colonoscopy. We aimed to investigate patient-related factors associated with increased PC interval or insufficient PI.

Methods: The post-hoc regression analyses were performed using the data from two prospective studies (NCT04434625 and NCT04101097).

Smarcd1 antagonizes the apoptosis of injured MES23.5 DA cells by enhancing the effect of Six2 on GDNF expression.

Glial cell line-derived neurotrophic factor (GDNF) played critical roles in the survival and repair of dopaminergic (DA) neurons. Transcription factor Six2 could repair injured DA cells by promoting the expression of GDNF, however, the underlying molecular mechanisms remain largely unknown. In this study, we screened forty-three proteins that interacted with Six2 in MES23.

MES23.5 DA Immortalized Neuroblastoma Cells Self-protect Against Early Injury by Overexpressing Glial Cell-derived Neurotrophic Factor via Akt1/Eya1/Six2 Signaling.

Injured neurons can initiate their own neurotoxin-induced repair mechanisms by expressing protective genes and activating specific intracellular signal transduction pathways. Although glial cell-derived neurotrophic factor (GDNF) plays a key role in the repair of dopaminergic (DA) neurons, whether there is high expression of GDNF in DA neurons at an early stage of injury has not yet been reported. In this study, neurotoxin-induced GDNF overexpression was detected for the first time in MES23.

Impact of gene knockdown on glial cell line-derived neurotrophic factor transcriptional activity in dopaminergic neurons.

Pitx3 is strongly associated with the phenotype, differentiation, and survival of dopaminergic neurons. The relationship between Pitx3 and glial cell line-derived neurotrophic factor (GDNF) in dopaminergic neurons remains poorly understood. The present investigation sought to construct and screen a lentivirus expression plasmid carrying a rat Pitx3 short hairpin (sh)RNA and to assess the impact of gene knockdown on GDNF transcriptional activity in MES23.