Activation of locus coeruleus noradrenergic neurons rapidly drives homeostatic sleep pressure.

Homeostatic sleep regulation is essential for optimizing the amount and timing of sleep for its revitalizing function, but the mechanism underlying sleep homeostasis remains poorly understood. Here, we show that optogenetic activation of locus coeruleus (LC) noradrenergic neurons immediately increased sleep propensity following a transient wakefulness, contrasting with many other arousal-promoting neurons whose activation induces sustained wakefulness. Fiber photometry showed that repeated optogenetic or sensory stimulation caused a rapid reduction of calcium activity in LC neurons and steep declines in noradrenaline/norepinephrine (NE) release in both the LC and medial prefrontal cortex (mPFC).

Planetary Health Diet Index Trends and Associations with Dietary Greenhouse Gas Emissions, Disease Biomarkers, Obesity, and Mortality in the United States (2005-2018).

Background: Diet plays a vital role in human health and environmental effects. Monitoring diet quality and its relationship to both health and environment are essential for policy making.

Objectives: This study aimed to analyze trends in the Planetary Health Diet Index (PHDI) and its associations with daily greenhouse gas emissions from food (GHG), disease-related biomarkers, anthropometric measurements, obesity, and all-cause mortality in the US population.

Factors influencing the quality of life among women with cancer in Vietnam.

Background: Cancer and its treatments significantly affect the quality of life (QoL) of patients. This remains understudied among Vietnamese women with cancer.

Objectives: This study explored the QoL of Vietnamese women with cancer and identified key influencing factors.

How Effective Are Secondary Interventions at Improving Health Outcomes In Children Exposed to Lead in Early Childhood?

Preventing childhood lead exposure has been at the forefront of environmental and public health policy in the United States for decades. When prevention fails and children are exposed to lead, secondary interventions are often used to mitigate the adverse effects. We review the literature on the effectiveness of secondary interventions used to treat children with elevated blood lead levels (BLL).

Extreme temperature increases the risk of COPD morbimortality: A systematic review and meta-analysis.

Introduction: This systematic review examines how extreme temperatures impact chronic obstructive pulmonary disease (COPD) morbidity and mortality, focusing on identifying vulnerable subpopulations.

Methods: We conducted a systematic literature search from January 1, 2000, to November 6, 2024, across databases like PubMed, MEDLINE and EMBASE, Web of Science, and Scopus, focusing on observational studies that quantitatively defined extreme temperatures and their impacts on COPD morbidity and mortality. Out of 3140 records, 25 studies met the inclusion criteria.