Does pregnancy in adolescence increase the chances of osteoporosis among aged women? Findings from the ELSI study.

Objective: Bone mineral density changes during the life span, rising rapidly during adolescence, plateauing around 30 years of age and decreasing in later years. Life events such as pregnancy and lactation temporarily reduce bone density, and their long-term effects on osteoporosis development are still unclear. This study aimed to analyse the association between pregnancy in adolescence and osteoporosis in aged women.

Role of the Molecular Mass on the Elastic Properties of Hybrid Carrageenan Hydrogels.

A set of carrageenans produced in the potassium form and with chemical structures varying from pure iota-carrageenans to nearly pure kappa-carrageenans is submitted to ultrasonication to reduce their molecular masses Mw while maintaining a constant chemical structure and a polydispersity index around 2. The kinetics of ultrasound-induced chain scission are found to be slower for polysaccharides richer in kappa-carrageenan disaccharide units. From the elasticity of samples directly gelled in a rheometer at 1 /% in 0.

Sclerosing bone dysplasias: a pictorial essay.

Sclerosing bone dysplasias encompass abnormalities in bone density, divided into hereditary and nonhereditary forms. Primarily diagnosed through radiography, they are often incidental findings. Among the hereditary forms, the following stand out: osteopetrosis, osteopoikilosis, multiple diaphyseal sclerosis (ribbing disease), osteopathia striata, and Camurati-Engelmann disease.

The association between cardiovascular risk and physical performance in individuals with obesity: A cross-sectional study focusing on the 5× sit-to-stand test.

Introduction: Although it is established that individuals with obesity are at increased risk of cardiovascular events, the relationship between cardiovascular risk and physical function in this population is still a topic of discussion. The objectives of the present study were: to check the association between cardiovascular risk and physical performance through physical-functional tests and to identify cutoff points for functional tests to be used for the definition of high cardiovascular risk.

Methods: A cross-sectional study included adults, both sexes, with obesity.

Conservation challenges for Brazilian primates and the role of protected areas in a changing climate.

The negative effects of land-use changes on biodiversity significantly contribute to climate change. Primates are among the animals most affected by these changes, because of their high dependence on forest cover where a lack of forest connectivity can limit their dispersal and segregate their populations. In this sense, protected areas (PAs) are crucial for conserving endangered primates, especially endemic species.