Retinal Microperimetry as a Novel Tool for Early Detection of Subclinical Cognitive Dysfunction and Brain Damage in Type 1 Diabetes: A Pilot Study.

Context: Retinal microperimetry (MPR) is a non-invasive method that measures retinal light sensitivity (RS) and gaze fixation stability (GFS). MPR has been described as a marker of cognitive impairment in people with Type 2 diabetes, but it has never been assessed in people with Type 1 diabetes (T1D). Our group described subclinical cognitive alterations, structural brain differences, and increased levels of light chain neurofilament (NfL) in people with T1D and impaired awareness of hypoglycaemia.

Association Between Insulin-Like Growth Factor-1 and Social Cognition in Huntington's Disease.

Background: Insulin-like growth factor 1 (IGF-1) seems to be involved in the neural circuits associated with social cognition and brain structure.

Objectives: To investigate the association of IGF-1 levels with social cognition and brain structure in Huntington's disease (HD).

Methods: We evaluated social cognition using the Ekman test in 22 HD patients and 19 matched controls.

Polymorphisms in the oxytocin receptor and their association with apathy and impaired social cognition in Huntington's disease.

Background: Huntington's disease (HD) is a neurodegenerative disorder characterized by cognitive, motor, and neuropsychiatric manifestations. Oxytocin is a neuropeptide studied for its role as a neuromodulator regulating multiple behaviors linked to social cognition. Genetic variation of oxytocin receptor (OXTR) might interact in the etiology and development of several impaired social behaviors.

Clinical manifestations of homozygote allele carriers in Huntington disease.

Objective: Because patients homozygous for Huntington disease (HD) receive the gain-of-function mutation in a double dose, one would expect a more toxic effect in homozygotes than in heterozygotes. Our aim was to investigate the phenotypic differences between homozygotes with both alleles ≥36 CAG repeats and heterozygotes with 1 allele ≥36 CAG repeats.

Methods: This was an international, longitudinal, case-control study (European Huntington's Disease Network Registry database).