PRESS-NEWS.org - Press Release Distribution
PRESS RELEASES DISTRIBUTION

Women’s blood lipids metabolism better in countering effects of sleep apnea

Women’s blood lipids metabolism better in countering effects of sleep apnea
2024-02-05
(Press-News.org) Sleep apnea, which involves recurring, temporary interruptions of breathing during sleep, can disturb regulation of blood lipid levels, a key factor in the development of cardiovascular disease. A University of Ottawa research team has shown that the impact of sleep apnea on the metabolism of blood lipids differs by sex, with women regulating their blood lipids better than men.

The study was conducted by Nicholas Goulet, Caroline Marcoux, Renée Morin, Jean-François Mauger and Vincent Bourgon, under the supervision of Pascal Imbeault, full professor in the School of Human Kinetics of uOttawa’s Faculty of Health Sciences and a member of the Institut du savoir Montfort, in collaboration with Dr. Ruwan Amaratunga, a pneumologist with the Montfort institute.

In a randomized cross-over trial including subjects of both sexes, the research team measured the impact of consuming high-fat meals and intermittent exposure to oxygen-deficient air, leading to low blood oxygen levels (hypoxemia), a key characteristic of sleep apnea. Various physiological measurements were taken during the study, including triglyceride levels, blood pressure and oxygen saturation.

“We achieved our findings by measuring lipids in the bloodstream after a lipid-rich meal, with men and women in good health exposed to ambient air (normal oxygen levels) or oxygen-deficient air intermittently (the latter simulating sleep apnea),” says Imbeault.

The results suggest that there are significant differences between men and women in triglyceride response after a meal under conditions of intermittent hypoxemia. The study provides detailed information on the interaction among biological sex, intermittent hypoxemia and triglyceride response after a meal, with potential implications for future research and clinical applications in the area of physiology.

“Our work shows that women present a metabolic advantage in managing blood lipids, protecting them from the disruptive effects of sleep apnea. This could potentially explain why women living with sleep apnea present a lower prevalence of co-morbidities (Type II diabetes, cardiovascular disease) than men,” says Imbeault.

The study took place from 2018 to 2023 at the University of Ottawa. “To our knowledge, no study to date has investigated the contribution of biological sex to blood lipids during exposure to intermittent hypoxemia, a condition that simulates sleep apnea,” Imbeault says.

The findings therefore add a new dimension to our understanding of the way blood lipids are managed and highlight the importance of considering the difference between the sexes in future research and clinical interventions.

The study, “Biological sex-related differences in the postprandial triglyceride response to intermittent hypoxaemia in young adults: a randomized crossover trial,” was recently published in the Journal of Physiology.

END

[Attachments] See images for this press release:
Women’s blood lipids metabolism better in countering effects of sleep apnea

ELSE PRESS RELEASES FROM THIS DATE:

Healthy lifestyle and cognition in older adults with common neuropathologies of dementia

2024-02-05
About The Study: This study found that in older adults, a healthy lifestyle may provide a cognitive reserve to maintain cognitive abilities independently of common neuropathologies of dementia. Authors: Klodian Dhana, M.D., Ph.D., of Rush University Medical Center in Chicago, is the corresponding author. To access the embargoed study: Visit our For The Media website at this link https://media.jamanetwork.com/ (doi:10.1001/jamaneurol.2023.5491) Editor’s Note: Please see the article for additional information, including other authors, ...

Officer-involved killings of unarmed black people and racial disparities in sleep health

2024-02-05
About The Study: Sleep duration among Black survey respondents worsened after exposure to officer-involved killings of unarmed Black individuals in their area of residence. The findings were specific to officer involved killings of unarmed Black people, and no adverse outcomes on sleep health were found for white respondents. These findings underscore the role of structural racism in shaping racial disparities in sleep health.  Authors: Atheendar S. Venkataramani, M.D., Ph.D., of the University ...

Injuries from legal interventions involving conducted energy devices

2024-02-05
About The Study: This study of emergency department visits for physical injuries from use of conducted energy devices, such as TASERs, by police departments found that most visits involved young Black and white males from low-income areas. Black individuals were overrepresented in the sample versus the U.S. population, consistent with research demonstrating increased risk of police violence in Black populations.  Authors: Kevin N. Griffith, Ph.D., of the Vanderbilt University Medical Center ...

Losing sleep over killings of unarmed Black individuals by police

2024-02-05
PHILADELPHIA – Black adults across the United States suffer from sleep problems following exposure to news about unarmed Black individuals killed by police during police encounters, according to new findings published today in JAMA Internal Medicine from researchers at the University of Pennsylvania Perelman School of Medicine. The issue, researchers said, may compound the risk factors that poor sleep already poses for many chronic and mental health conditions, from depression to post traumatic stress disorder. Researchers conducted two separate analyses examining changes in sleep duration in the U.S. non-Hispanic Black population before and after exposure to such deaths ...

New technology unscrambles the chatter of microbes

2024-02-05
Researchers from University of California San Diego, as part of a large collaboration with scientists around the world, have developed a new search tool to help researchers better understand the metabolism of microorganisms. Microbes are key players in virtually all biological and environmental systems, yet limitations in current techniques used to study microbial metabolism make it difficult to decode their interactions and activities. The new research, published February 5, 2023 in Nature Microbiology, directly addresses these limitations, which could ultimately transform our understanding of both human health and the environment. “Humans are walking ecosystems in which microbes vastly ...

Pulmonary rehabilitation is difficult for millions of Americans to access

2024-02-05
New Haven, Conn. — Pulmonary rehabilitation, an essential component of care for patients with chronic respiratory conditions, is difficult for millions of Americans to access, a new Yale-led study reveals. The findings, researchers say, reveal geographic regions where this type of care is most lacking and illustrate the potential for telemedicine in helping to bridge this gap. The study was published Feb. 5 in JAMA Network Open. Pulmonary rehabilitation is a multidisciplinary program that incorporates exercise and strategic techniques to improve quality of life and overall health for patients with respiratory conditions like chronic ...

Bacterial test for raw, organic milk may require more precision

2024-02-05
ITHACA, N.Y. -- Cornell food scientists show that a standard quality test used for raw, organic milk is insufficient for distinguishing between specific groups of bacteria, suggesting that the criteria for determining milk quality at processing plants needs to be updated. Their work was published Jan. 20 in the Journal of Dairy Science. “Testing milk should not be one size fits all,” as tests should be used appropriately to give the best feedback to dairy producers, said lead author Renee Lee ’21, ...

Brazilian researcher helps describe a novel species of jellyfish discovered in a remote location in Japan

Brazilian researcher helps describe a novel species of jellyfish discovered in a remote location in Japan
2024-02-05
A gelatinous animal with a diameter of about 10 cm and a red stomach resembling the Cross of St George when seen from above. This is Santjordia pagesi, a newly described species of medusa. Medusae are a type of free-swimming, umbrella-shaped jellyfish with a reduced stalk. The new species is described in an article published in the journal Zootaxa. The study was conducted by an international group of researchers that included a Brazilian scientist supported by FAPESP.  The scientist in question is André Morandini, last author ...

Small but mighty – study highlights the abundance and importance of the ocean’s tiniest inhabitants

2024-02-05
Tiny plankton – measuring less than 20µm (or 0.02mm) in diameter – make up the majority of plankton in the ocean and play a critical role in the planet’s health, according to new research. However, scientists say challenges in identifying them have led to them becoming a silent majority that is currently being overlooked when it comes to global ocean policy. The study is one of the first to explore the abundance and importance of these tiny ocean inhabitants around the UK coastline, with the technology capable of monitoring them only having been introduced in around 2010. However, ...

Bullied teens’ brains show chemical change associated with psychosis

Bullied teens’ brains show chemical change associated with psychosis
2024-02-05
Researchers have found that adolescents being bullied by their peers are at greater risk of the early stages of psychotic episodes and in turn experience lower levels of a key neurotransmitter in a part of the brain involved in regulating emotions. The finding suggests that this neurotransmitter — a chemical messenger that transmits nerve impulses for communication by a nerve cell — may be a potential target for pharmaceutical interventions aimed at reducing the risk of psychotic disorders. Psychosis is a mental state characterized by loss of contact with reality, incoherent speech and behavior, and typically hallucinations and delusions seen in psychiatric disorders ...

LAST 30 PRESS RELEASES:

Emory-led Lancet review highlights racial disparities in sudden cardiac arrest and death among athletes

A new approach to predicting malaria drug resistance

Coral adaptation unlikely to keep pace with global warming

Bioinspired droplet-based systems herald a new era in biocompatible devices

A fossil first: Scientists find 1.5-million-year-old footprints of two different species of human ancestors at same spot

The key to “climate smart” agriculture might be through its value chain

These hibernating squirrels could use a drink—but don’t feel the thirst

New footprints offer evidence of co-existing hominid species 1.5 million years ago

Moral outrage helps misinformation spread through social media

U-M, multinational team of scientists reveal structural link for initiation of protein synthesis in bacteria

New paper calls for harnessing agrifood value chains to help farmers be climate-smart

Preschool education: A key to supporting allophone children

CNIC scientists discover a key mechanism in fat cells that protects the body against energetic excess

Chemical replacement of TNT explosive more harmful to plants, study shows

Scientists reveal possible role of iron sulfides in creating life in terrestrial hot springs

Hormone therapy affects the metabolic health of transgender individuals

Survey of 12 European countries reveals the best and worst for smoke-free homes

First new treatment for asthma attacks in 50 years

Certain HRT tablets linked to increased heart disease and blood clot risk

Talking therapy and rehabilitation probably improve long covid symptoms, but effects modest

Ban medical research with links to the fossil fuel industry, say experts

Different menopausal hormone treatments pose different risks

Novel CAR T cell therapy obe-cel demonstrates high response rates in adult patients with advanced B-cell ALL

Clinical trial at Emory University reveals twice-yearly injection to be 96% effective in HIV prevention

Discovering the traits of extinct birds

Are health care disparities tied to worse outcomes for kids with MS?

For those with CTE, family history of mental illness tied to aggression in middle age

The sound of traffic increases stress and anxiety

Global food yields have grown steadily during last six decades

Children who grow up with pets or on farms may develop allergies at lower rates because their gut microbiome develops with more anaerobic commensals, per fecal analysis in small cohort study

[Press-News.org] Women’s blood lipids metabolism better in countering effects of sleep apnea