Menu

Blog

Archive for the ‘biotech/medical’ category: Page 218

Mar 21, 2024

Scientists Find ‘Switch’ That Stops Immune System Attacking Healthy Cells

Posted by in categories: biotech/medical, chemistry

Our immune system is talented at telling the difference between the chemistry of our own body and that of an invading pathogen. When it malfunctions, our body can become host to an intense civil war.

Scientists are keen to understand this in more detail, and a newly identified ‘switch’ that deactivates a sensor of foreign DNA may provide important insight.

A key part of this discovery, made by a team from the Swiss Federal Institute of Technology Lausanne, is an enzyme called cyclic GMP-AMP synthase (cGAS).

Mar 21, 2024

Liquid metal may point way to wearable ultrasound devices

Posted by in categories: biotech/medical, wearables

The best-known byproduct of ultrasound—so named because its frequencies exceed the range of the human ear—is, in fact, not audio but visual: 2D imagery, often of a fetus maturing in the womb. But ultrasound has also found a place in other corners of the medical realm, from assessing blood flow to examining suspicious lumps and diagnosing disease.

Mar 21, 2024

Breakthrough: Scientists remove AIDS-causing virus from infected cells

Posted by in categories: biotech/medical, genetics

CRISPR-Cas technology sparks hope for curing HIV in cell culture:


Thanks to Nobel-awarded genetic scissors the scientists cut out HIV from cells and gave hope for the future.

Mar 21, 2024

Your Blood Could Be Aging Your Brain, Increasing Risk of Dementia

Posted by in categories: biotech/medical, life extension, neuroscience

Our brains change more rapidly at various times of our lives, as though life’s clock was ticking faster than usual. Childhood, adolescence and very old age are good examples of this.

Yet for much of adulthood, the same clock seems to tick fairly regularly. One lap around the Sun; one year older.

However, there may be a stage of life when the brain’s clock starts speeding up. The brain starts changing without you necessarily noticing it. It may even be caused (partly) by what’s in your blood.

Mar 21, 2024

Common antibiotics can regenerate heart cells in animals

Posted by in category: biotech/medical

A combination of widely available antibiotics may be able to treat heart failure after researchers found that the therapy regenerates heart cells in animals.

By Grace Wade

Mar 20, 2024

Medics design AI tool to predict side-effects in breast cancer patients

Posted by in categories: biotech/medical, robotics/AI

Trials in UK, France and the Netherlands indicate tool can predict if patient will experience problems from surgery and radiotherapy.

Mar 20, 2024

Surgical Management and Predictors of Postoperative Complications of Retrosternal Goiters: A Retrospective Study

Posted by in category: biotech/medical

Delve into insights from a captivating retrospective study on Surgical Management and Predictors of Postoperative Complications of Retrosternal Goiters!

Tap the link to know more 🔗


Background: The preferred standard treatment for retrosternal goiter (RSG), a slow-growing, often benign tumor, remains thyroidectomy. An alternative strategy may be required when the goiter is intrathoracic. Data on the results of RSG procedures are rarely reported. Careful patient selection and assessment are critical to avoiding an unexpected sternotomy during surgery and postoperative complications. This study aims to examine the clinical findings and treatment outcomes of RSG and to identify the variables affecting postoperative complications in a resource-limited setting.

Continue reading “Surgical Management and Predictors of Postoperative Complications of Retrosternal Goiters: A Retrospective Study” »

Mar 20, 2024

Philosophical Transactions of the Royal Society B: Biological Sciences: Vol 379, No 1901

Posted by in categories: bioengineering, biotech/medical

The advent of CRISPR gene editing, along with nanopore genome sequencing and single-cell RNA sequencing, has allowed the study of host-microbe interactions with newfound accuracy and power. The studies taking advantage of these tools have provided insights with never-before seen precision and, excitingly, have revealed surprising findings on principles of host-microbe interactions. This special issue reviews and interprets host immunological and developmental interactions with the resident microbiome. The articles reflect on evolutionary principles guiding how hosts interact with their commensal microbiota and offer new techniques and directions for research that we hope will advance the field in the years to come.

This issue is available to buy in print. Visit our information for readers page for purchasing options.

Mar 20, 2024

Astrocytes Remember: A New Layer of Immune Memory Uncovered

Posted by in categories: biotech/medical, genetics, neuroscience

Researchers have made a pioneering discovery that astrocytes, cells within the central nervous system traditionally not associated with immune functions, are capable of developing what’s being called an “immune memory.” This capability…


Summary: Astrocytes, traditionally non-immune cells within the central nervous system, possess the ability to develop an immune memory, responding more vigorously to subsequent immune challenges. This groundbreaking study reveals that through an epigenetic mechanism involving the enzymes p300 and ATP-citrate lyase (ACLY), astrocytes enhance their pro-inflammatory responses, a trait similar to the immune memory seen in adaptive immunity.

The findings, which have been observed in both mouse models of multiple sclerosis (MS) and human cell samples, suggest that astrocyte immune memory may play a significant role in chronic neurological disorders, offering new insights into disease pathology and potential therapeutic targets to mitigate CNS inflammation.

Mar 20, 2024

Behavioral and neural correlates to multisensory detection of sick humans

Posted by in categories: biotech/medical, robotics/AI

Importantly, the superior temporal sulcus (STS), and superior temporal gyrus (STG) are considered core areas for multisensory integration (, ), including for olfactory–visual integration (). The STS was significantly connected to the IPS during multisensory integration, as indicated by the PPI analysis ( Fig. 3 ) focusing on functional connectivity of IPS and whole-brain activation. Likewise, the anterior and middle cingulate cortex, precuneus, and hippocampus/amygdala were activated when testing sickness-cue integration-related whole-brain functional connectivity with the IPS but were not activated when previously testing for unisensory odor or face sickness perception. In this context, hippocampus/amygdala activation may represent the involvement of an associative neural network responding to threat () represented by a multisensory sickness signal. This notion supports the earlier assumption of olfactory-sickness–driven OFC and MDT activation, suggested to be part of a neural circuitry serving disease avoidance. Last, the middle cingulate cortex has recently been found to exhibit enhanced connectivity with the anterior insula during a first-hand experience of LPS-induced inflammation (), and this enhancement has been interpreted as a potential neurophysiological mechanism involved in the brain’s sickness response. Applied to the current data, the middle cingulate cortex, in the context of multisensory-sickness–driven associations between IPS and whole-brain activations, may indicate a shared representation of an inflammatory state and associated discomfort.

In conclusion, the present study shows how subtle and early olfactory and visual sickness cues interact through cortical activation and may influence humans’ approach–avoidance tendencies. The study provides support for sensory integration of information from cues of visual and olfactory sickness in cortical multisensory convergences zones as being essential for the detection and evaluation of sick individuals. Both olfaction and vision, separately and following sensory integration, may thus be important parts of circuits handling imminent threats of contagion, motivating the avoidance of sick conspecifics (, ).

Page 218 of 2,739First215216217218219220221222Last