The immune system is a critical factor of host survival, allowing resistance to infections and maintaining tissue integrity. The activation of immune responses requires precise regulation to assure a balance between the benefits and costs of these responses. Moreover, the theory of antagonistic pleiotropy proposes that traits beneficial to early-life fitness may sustain costs that manifest later in life, after the period of strongest natural selection, where aging introduces further complexities for cooperative defenses. As a result of this, hosts of different ages may manifest distinct disease courses despite infection with the same pathogen.

Researchers from the Baylor College of Medicine have characterized 100 conserved Alzheimer’s disease (AD) risk orthologue genes in Drosophila and found several with unknown roles in brain structure, function and stress resilience. The implication of this finding is that new pathways of neurodegeneration have been revealed, offering new insights into the genetic complexity of AD.

Do men’s and women’s brains age equally? Women are more often diagnosed with Alzheimer’s disease (AD) than men. Age is the primary known risk factor for AD prevalence, and both aging and AD are associated with brain atrophy, but it is still not clear whether men and women differ regarding brain decline in aging.

Do men’s and women’s brains age equally? Women are more often diagnosed with Alzheimer’s disease (AD) than men. Age is the primary known risk factor for AD prevalence, and both aging and AD are associated with brain atrophy, but it is still not clear whether men and women differ regarding brain decline in aging. There is mixed evidence regarding this topic, since most of the larger studies have shown an abrupt decay of total gray matter and hippocampal volume in men, but other studies have found steeper total gray matter decline in women.

Tumors suffer metabolic stress, such as oxygen and nutrient deficiency; as a result, altered metabolism is a common feature of tumors. Cancer cells enhance the production of energy and the synthesis of macromolecules to grow at pathologically increased rates. It is crucial to identify genes that modulate cellular fitness under these stressful scenarios.

Is there a link between cellular senescence and multiple sclerosis (MS) progression? Several presentations at this year’s European Committee for Treatment and Research in Multiple Sclerosis 2025 (ECTRIMS 2025) conference, in Barcelona, which ended Sept. 26, addressed this question

Is there a link between cellular senescence and multiple sclerosis (MS) progression? Several presentations at this year’s European Committee for Treatment and Research in Multiple Sclerosis 2025 (ECTRIMS 2025) conference, which ends today in Barcelona, addressed this question.

Researchers from the CUNY Advanced Science Research Center and their collaborators recently published a paper in Science Advances on Aug. 27, 2025, about synthetic carbohydrate receptors (SCRs) and their potential as broad-spectrum antivirals by targeting the viral envelope N-glycans. They described the antiviral activity of a series of tetrapodal SCRs both in vitro and in vivo, showing their potential as broad-spectrum inhibitors of viral infection.

When injured, the human skin is repaired through a wound-healing process that forms fibrotic scar tissue. Scarring burdens patients at both the functional and esthetic levels, and scars in the craniofacial region in particular can be psychologically damaging for the individual. The principal limitation to developing effective scarring treatments is the limited understanding of the molecular mechanisms behind scar formation and the mechanisms that drive repair without scarring.