Volga German surnames and Alzheimer's disease in Argentina: an epidemiological perspective.

The N141I variant (PSEN1 gene) is associated with familial forms of early-onset Alzheimer's disease (AD) in descendants of Volga Germans, whose migration to Argentina is well documented. As a proxy for geographic origin, surnames can be a valuable tool in population studies. The 2015 Argentine Electoral Registry provided geographic data for 30,530,194 individuals, including 326,922 with Volga German surnames.

Apolipoprotein E Polymorphisms in Andean Population of Jujuy, Argentina.

The pleiotropic nature of the apolipoprotein E () gene is associated with complex diseases in different populations. We analyzed polymorphisms in 76 individuals from Jujuy - Argentina using NGS technology. The observed genotypes align with the expected Hardy-Weinberg equilibrium.

Chilean reference of length at birth.

Background: To generate a reference of length at birth (LB) according to sex and gestational age (GA) of the Chilean population.

Methods: This cross-sectional observational study used public pooled Chilean newborn (NB) population data registered by the Civil Registry and Identification Service in Chile from 2000 to 2016. Multiple births, entries without information for LB, GA, and sex, and birth lengths <-4SD and > 4SD, were excluded.

Birth Size and Maternal, Social, and Environmental Factors in the Province of Jujuy, Argentina.

Introduction: birth size is affected by diverse maternal, environmental, social, and economic factors.

Aim: analyze the relationships between birth size-shown by the indicators small for gestational age (SGA) and large for gestational age (LGA)-and maternal, social, and environmental factors in the Argentine province of Jujuy, located in the Andean foothills.

Methods: data was obtained from 49,185 mother-newborn pairs recorded in the Jujuy Perinatal Information System (SIP) between 2009 and 2014, including the following: newborn and maternal weight, length/height, and body mass index (BMI); gestational age and maternal age; mother's educational level, nutritional status, marital status and birth interval; planned pregnancy; geographic-linguistic origin of surnames; altitudinal place of birth; and unsatisfied basic needs (UBN).