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A biomarker is a biological molecule found in blood, other body fluids, or tissues that is a sign of a normal or abnormal process, or of a condition or disease. A biomarker may be used to see how well the body responds to a treatment for a disease or condition. Also called molecular marker and signature molecule.

Study reveals altered gut microbiota profiles in elderly patients with acute hepatitis E

Gut dysbiosis has been reported in severe liver diseases. However, information on the impact of hepatitis E virus infection on the gut microbiota, and the association between enteric microbiota disturbances and acute hepatitis E (AHE), is limited, particularly in elderly patients with AHE (AHE-elderly).

8 Jul 2025

New RNA-based liquid biopsy detects early colorectal cancer with high accuracy

Liquid biopsies are tests that detect signs of cancer through a simple blood draw. Unlike traditional biopsies, which require removing a piece of tissue, a liquid biopsy typically looks for mutations or modification changes in fragments of DNA from cancer cells circulating in the blood.

8 Jul 2025

Salivary enzyme levels rise with gene variation in diabetics

This research highlights the association between AMY1 gene copy number and salivary enzyme activity, with implications for glucose homeostasis in diabetes.

8 Jul 2025

Metabolic enzyme PHGDH found to play a surprising role in breast cancer immunity

Macrophages are immune cells with a split personality: some fight tumors, while others help them grow. In breast cancer, most macrophages fall into the latter camp—dubbed M2-like—fueling tumor progression and dampening immune responses.

7 Jul 2025

ADA2 regulates inflammation through lysosomal and extracellular mechanisms

Adenosine deaminase 2 (ADA2) plays a critical role in immune regulation, particularly in monocyte differentiation and activation.

7 Jul 2025

Amino acid metabolism in breast cancer as a driver of disease and therapeutic target

The review introduces the molecular subtypes of breast cancer and outlines how altered amino acid metabolism supports tumor growth.

7 Jul 2025

AI assistance improves accuracy and consistency in skin cancer tissue analysis

Pathologists' examinations of tissue samples from skin cancer tumors improved when they were assisted by an AI tool. The assessments became more consistent and patients' prognoses were described more accurately.

4 Jul 2025

Early childhood weight and illness linked to future health risks in men

New research has shown how boys being overweight in early childhood or having chickenpox or another infectious disease in infancy may increase their risk of having chronic disease in later life.

3 Jul 2025

PPP2R1A mutations linked to improved survival in ovarian clear cell carcinoma

Patients with ovarian clear cell carcinoma (OCCC) whose tumors have specific mutations in the PPP2R1A gene were found to have improved survival following immunotherapy compared to patients without these mutations, according to researchers from The University of Texas MD Anderson Cancer Center.

3 Jul 2025

Timepoint at which B cells transform into leukemic cells impacts treatment outcomes

New findings show that the stage of normal cell development at which B cells transform into leukemic cells impacts treatment outcomes for pediatric patients with B-cell acute lymphoblastic leukemia (B-ALL).

2 Jul 2025

Spaceflight exposes astronauts to hidden threats in their gut

This review highlights how the unique stressors of space travel, radiation, microgravity, and circadian disruption impact astronauts’ gut microbiomes, with potential consequences for their mood, cognition, and immunity. The authors call for targeted microbiome monitoring and dietary interventions to protect astronaut mental health on future missions.

1 Jul 2025

Gut microbiota signatures predict gestational diabetes in first trimester

A new study has identified early-pregnancy gut microbiota signatures associated with the development of gestational diabetes mellitus, a metabolic disorder that carries substantial risks to both maternal and fetal health.

1 Jul 2025

Macrophage-derived lipocalin 2 drives severe pneumonia in SARS-CoV-2 infection

Since the emergence of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2), understanding the mechanisms underlying severe pneumonia has remained a major research challenge.

1 Jul 2025

Cannabis smoking changes your DNA, leaving epigenetic scars

Long-term, persistent weekly or more frequent cannabis smoking leaves a distinct and partially reversible epigenetic footprint on blood DNA. These methylation changes strongly overlap with those from tobacco and may serve as biomarkers of smoke exposure.

30 Jun 2025

Study finds no link between omega 6 and increased inflammation

A new study published in Nutrients offers new insight into omega-6 and whether it is truly the proinflammatory fatty acid many claim it to be.

30 Jun 2025

FAM111B identified as a key driver of glioma progression and therapeutic target

Gliomas are among the deadliest brain tumors, with limited treatment options and poor survival rates. Scientists from China identified FAM111B, a DNA-repair-associated protein, as a key driver of glioma progression.

27 Jun 2025

Investigating the role of ultra-processed foods in the inheritance of autism and ADHD

In a recent publication released by PubMed, American scientist Dr. Renee Dufault at the Food Ingredient and Health Research Institute, provides a peer-reviewed protocol for determining the role ultra-processed foods play in prenatal heavy metal exposures and changes in the expression of the zinc dependent MT-1 (metallothionein) gene that impact child neurodevelopment.

27 Jun 2025

New protein discovery may contribute to improving the diagnosis of Dementia with Lewy Bodies

A research team led by Associate Professor Ayako Okado-Matsumoto from the Department of Biology at Toho University has made a significant finding that sheds new light on Dementia with Lewy Bodies (DLB).

27 Jun 2025

New brain imaging benchmark may improve Alzheimer's detection in diverse populations

A team of researchers from the Keck School of Medicine of USC's Mark and Mary Stevens Neuroimaging and Informatics Institute (Stevens INI) has identified a new brain imaging benchmark that may improve how researchers classify biologically meaningful changes associated with Alzheimer's disease, especially in Hispanic and non-Hispanic white populations.

26 Jun 2025

Can saffron treat Alzheimer’s and depression?

Saffron shows promise as a natural treatment for depression and cognitive decline, performing as well as standard drugs in clinical trials. However, more rigorous studies are needed before saffron can be recommended in mainstream psychiatric and dementia care.

26 Jun 2025