Intra-islet glucagon signalling regulates beta-cell connectivity, first-phase insulin secretion and glucose homoeostasis.

Objective: Type 2 diabetes (T2D) is characterised by the loss of first-phase insulin secretion. We studied mice with β-cell selective loss of the glucagon receptor (Gcgr X Ins-1), to investigate the role of intra-islet glucagon receptor (GCGR) signalling on pan-islet [Ca] activity and insulin secretion.

Methods: Metabolic profiling was conducted on Gcgr and littermate controls.

Acute urinary retention.

Acute urinary retention is a common clinical presentation in emergency departments in the UK and is responsible for over 30 000 hospital admissions annually. Awareness of the latest advice and guidelines regarding its presentation, investigation and management is paramount to improve patient outcomes and reduce morbidity. Immediate management of acute urinary retention relies on timely bladder decompression by catheterisation.