Polymerase Chain Reaction News and Research

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Polymerase chain reaction (PCR) is a revolutionary laboratory technique that enables the replication of a specific DNA sequence. Using PCR, millions of copies of a target DNA can be easily synthesized within a short period of time.

Non-invasive swab test offers fast, accurate tuberculosis detection worldwide

A portable molecular test, MiniDock MTB, detected pulmonary tuberculosis rapidly and accurately across seven high-burden countries, using sputum or tongue swab samples. The study suggests the low-cost, battery-operated platform could expand near-point-of-care TB diagnosis in low-resource settings, although real-world implementation and drug-resistance integration still need evaluation.

10 May 2026

Do repeated football head hits disrupt the gut microbiome?

A small exploratory study of collegiate football players found that non-concussive head impacts are correlationally linked to acute and season-long shifts in gut microbiome composition, with changes most pronounced 48–72 hours after significant impacts. However, most associations weakened after correction for multiple testing, and the authors stress the findings are preliminary and hypothesis-generating.

10 May 2026

Infectious H5N1 virus detected in dairy farm air

Findings from California dairy farms show H5N1 in air and wastewater, indicating overlooked transmission routes and implications for outbreak management.

8 May 2026

Hantavirus scare on cruise ship prompts WHO response

Hantavirus infections among cruise ship passengers have sparked a global health response, highlighting the need for effective outbreak management strategies.

7 May 2026

Fucosylated IgG drives adipose tissue dysfunction during aging

A study published in Engineering has identified fucosylated immunoglobulin G (IgG) as a key mediator contributing to adipose tissue dysfunction during aging, offering insights into age-related metabolic disorders and potential therapeutic targets.

25 Apr 2026

Multimodal AI improves prediction of PIK3CA mutations in breast cancer

Breast cancer is one of the most common malignancies worldwide, and mutations in the PI3K/AKT/mTOR (PAM) signaling pathway are prevalent in its development.

21 Apr 2026

New biochip detects tiny genetic markers in 20 minutes

A team of scientists from Nanyang Technological University, Singapore (NTU Singapore) has developed a new biochip that, when paired with Artificial Intelligence (AI), can detect quickly and accurately extremely small amounts of microRNAs, which are tiny genetic markers linked to diseases such as heart disease.

15 Apr 2026

SARS-CoV-2 rarely reaches first-trimester placentas but still disrupts early pregnancy immunity

Researchers analyzing 761 first-trimester pregnancies found that SARS-CoV-2 was rarely detected in placental tissues, suggesting in utero transmission early in pregnancy is uncommon. However, maternal infection was linked to immune dysregulation at the maternal-fetal interface, altered trophoblast signaling, and inflammatory changes that could affect placental development.

14 Apr 2026

Lab study shows cigarette smoke damaged lung cells more than e-cigarette vapor

Researchers found that cigarette smoke extract disrupted the lung cell barrier, increased IL-6 inflammation, and caused DNA damage in Calu-3 cells, while e-cigarette vapor extract showed no significant adverse effects on these measures under the study conditions. The authors caution that these were in vitro findings using liquid extracts and unflavored e-liquid, so they do not directly predict long-term human health outcomes.

12 Apr 2026

Rat hepatitis E virus may be a hidden cause of hepatitis in humans

This Nature Communications review argues that rat hepatitis E virus is an emerging zoonotic cause of hepatitis that is likely underdiagnosed because current tests are limited and awareness remains low. It shows that ratHEV is widespread in urban rodent populations, can infect humans and some other animals, and may spread mainly through indirect environmental exposure rather than direct rodent contact.

12 Apr 2026

New PCR method enables full genome amplification of HPV16

Human papillomavirus (HPV) is a double-stranded circular DNA virus with a genome of approximately 7–8 kb. This study aimed to establish an overlapping extension polymerase chain reaction method for the amplification of the entire genome of HPV16.

10 Apr 2026

Flu vaccines protect children well across Europe, but H3N2 remains harder to stop

Influenza vaccination provided strong real-world protection for children in European primary care across two seasons, with overall vaccine effectiveness of 68% in 2022–2023 and 71% in 2023–2024. Protection was highest against influenza B and H1N1, while H3N2 showed lower and more variable effectiveness, supporting the need for higher uptake and continued monitoring.

8 Apr 2026

Flu vaccination may cut heart attack and stroke risk after infection

In Danish adults aged 40 years or older, laboratory-confirmed influenza was linked to a sharp short-term rise in first-time heart attack and stroke risk, especially in the first 7 days after infection. Prior same-season influenza vaccination was associated with about half the excess cardiovascular risk among infected individuals, suggesting possible protection even in breakthrough cases.

6 Apr 2026

How could bisphenol A raise depression risk? Study identifies six key molecular targets

An integrative Translational Psychiatry study linked BPA exposure to major depressive disorder by identifying 571 shared targets and six core genes, with genetic, transcriptomic, docking, and mouse-model data supporting plausible mechanistic pathways. The strongest signals pointed to AKT1, SRC, PLCG2, and JAK3 as potential contributors, while EGFR appeared protective.

31 Mar 2026

Artemin identified as marker and target in feline osteoarthritis

By comparing osteoarthritis pain pathways known to be active in dogs and humans to those in cats with degenerative joint disease (DJD), researchers found that elevation of a particular molecule, artemin, could serve as a marker of disease (and possibly pain) as well as a potential therapeutic target.

30 Mar 2026

Study explores if wastewater can track colorectal cancer at population level

A proof-of-concept study shows that cancer-linked RNA can be detected in wastewater, raising the possibility of tracking colorectal cancer patterns across communities without relying on individual screening.

19 Mar 2026

BCAT2 enzyme identified as a target for diabetic foot recovery

Diabetic macrovascular complications are the main cause of death and disability in diabetes patients, of which vascular calcification is one of the key pathological mechanisms. Calcification in atherosclerotic plaque can cause stiffness and decreased compliance of the vascular wall, and induce atherosclerotic plaque rupture, which increases the risk of acute cardiovascular events.

6 Mar 2026

Study explores how reversible RNA editing could transform future cardiovascular medicine

This mini-review synthesises evidence showing that adenosine-to-inosine RNA editing plays an important regulatory role in cardiovascular development, cellular homeostasis, and disease biology. It highlights emerging links between dysregulated RNA editing and cardiovascular conditions while outlining biomarker potential and reversible RNA-editing therapeutic strategies that remain under investigation.

15 Feb 2026

Engineered enzyme enables fast and accurate RNA synthesis

From vaccines and diagnostics to emerging gene-based therapies, RNA molecules are now central to modern medicine.

9 Feb 2026

Why did influenza fail to spread in a crowded indoor setting?

The EMIT-2 trial shows zero influenza transmission despite ideal conditions, suggesting a perfect storm is needed for the virus to spread effectively.

4 Feb 2026