Liz Parrish

Liz Parrish

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BioViva founder; posts gene therapy and regenerative medicine topics.

Gut “Species” Are Actually Multiple Strains Tied to Disease
SocialMay 15, 2026

Gut “Species” Are Actually Multiple Strains Tied to Disease

Researchers found that many gut bacteria thought to be single species actually contain distinct populations that have evolved to thrive under different conditions in the human gut. Some of these bacterial groups are linked to aging, inflammatory bowel disease, colorectal...

By Liz Parrish
Gene Therapy Restores Six-Year-Old's Sight Like Magic
SocialMay 8, 2026

Gene Therapy Restores Six-Year-Old's Sight Like Magic

The mother of a six-year-old girl who had life-changing eye gene therapy says it is "like someone waved a magic wand and restored her sight https://t.co/IU3YRMtJSG

By Liz Parrish
ART Reverses HIV‑Induced Aging, Cutting Years Off Biological Clock
SocialMay 7, 2026

ART Reverses HIV‑Induced Aging, Cutting Years Off Biological Clock

Great news for HIV positive patients. A study presented at ESCMID Global 2026 found that untreated HIV can accelerate biological aging by up to a decade, but antiretroviral therapy can reverse this effect by nearly four years within about 18...

By Liz Parrish
SIRT6 Shields Aorta by Cutting Inflammation and Aging
SocialMay 6, 2026

SIRT6 Shields Aorta by Cutting Inflammation and Aging

SIRT6 appears protective in aortic disease, as higher levels reduce vascular inflammation and smooth muscle cell aging, thereby helping prevent both aortic aneurysm and dissection progression. https://t.co/eXuKrR7oNF

By Liz Parrish
Anemia Raises Alzheimer Biomarkers and Dementia Risk in Seniors
SocialMay 5, 2026

Anemia Raises Alzheimer Biomarkers and Dementia Risk in Seniors

In a large study of older adults, anemia was linked to higher levels of blood biomarkers associated with Alzheimer’s disease, neurodegeneration, and brain inflammation, as well as a significantly increased risk of developing dementia over time. https://t.co/cnUbvkidIO

By Liz Parrish
Gene Therapy Targets Childhood Blindness by Fixing Retinal Gene
SocialMay 4, 2026

Gene Therapy Targets Childhood Blindness by Fixing Retinal Gene

Jean Bennett and Albert Maguire developed a gene therapy approach to correct a gene in the retina to treat childhood blindness. https://t.co/WJ99qvcUT1

By Liz Parrish
Blood Factors Drive Aging or Rejuvenation; Therapies Emerging
SocialMay 2, 2026

Blood Factors Drive Aging or Rejuvenation; Therapies Emerging

Aging is increasingly understood as a system-wide process shaped by factors in the blood, which can actively drive either decline or rejuvenation rather than just reflect it. Emerging therapies that modify the circulatory environment show promise in reversing aspects of...

By Liz Parrish
Start Strength Training in Your 30s to Preserve Muscle Quality
SocialMay 1, 2026

Start Strength Training in Your 30s to Preserve Muscle Quality

Muscle loss can begin as early as your 30s, with measurable declines in muscle mass and function occurring well before old age. The study also found that women may lose strength and fitness faster than muscle mass itself, highlighting the...

By Liz Parrish
Organelles Drive Aging: Metabolic Engines and Signaling Hubs
SocialApr 30, 2026

Organelles Drive Aging: Metabolic Engines and Signaling Hubs

Cellular organelles play a central role in aging by acting as both metabolic engines and signaling hubs that coordinate processes within and between cells. Their dynamic interactions influence lifespan, health, and even inheritance, making them key targets for interventions aimed...

By Liz Parrish
Small Stem Cell Edit Generates Persistent Antibody Protection
SocialApr 29, 2026

Small Stem Cell Edit Generates Persistent Antibody Protection

Researchers showed that editing a small number of blood stem cells can reprogram the immune system to continuously produce therapeutic proteins, including powerful antibodies that are normally hard to generate. In mice, this approach created long-lasting, boostable protection against infections...

By Liz Parrish
Low Post‑Surgery Klotho Predicts Inflammation and Cognitive Decline
SocialApr 27, 2026

Low Post‑Surgery Klotho Predicts Inflammation and Cognitive Decline

Lower levels of the anti-aging protein Klotho after surgery were strongly linked to higher inflammation and worse cognitive function in patients with postoperative cognitive dysfunction (POCD). This suggests Klotho could be a useful early biomarker—and possibly a treatment target—for predicting...

By Liz Parrish
FGF21 Shows Dual Action: Reduces Drinking, Shields Liver
SocialApr 24, 2026

FGF21 Shows Dual Action: Reduces Drinking, Shields Liver

The study validated FGF21-a liver-derived hormone currently in clinical trials for fatty liver disease “as a dual-action therapeutic that both curbs harmful drinking behaviors and protects against alcohol-related liver injury https://t.co/VdPZvQQ9qp

By Liz Parrish
25% Beta‑Cell Loss and Aging Drive Type 2 Diabetes
SocialApr 22, 2026

25% Beta‑Cell Loss and Aging Drive Type 2 Diabetes

Researchers analyzed ~250,000 pancreatic islet cells and found that in type 2 diabetes, about 25% of insulin-producing beta cells are lost and many of the remaining ones become aged and dysfunctional. They identified dozens of genes—along with pathways like vitamin...

By Liz Parrish
Blocking PGAM‑Chk1 Kills Senescent Cells, Eases Lung Fibrosis
SocialApr 22, 2026

Blocking PGAM‑Chk1 Kills Senescent Cells, Eases Lung Fibrosis

Researchers found that senescent cells depend on a PGAM–Chk1 interaction to boost glycolysis and survive, and blocking this interaction selectively kills these cells and reduces disease effects like lung fibrosis. https://t.co/VTsHTkBcad

By Liz Parrish
FDA Approves Breakthrough Therapy for Critically Ill Children
SocialApr 20, 2026

FDA Approves Breakthrough Therapy for Critically Ill Children

FDA says ‘yes’ to transformative therapy for sick children — and more media coverage of UCLA https://t.co/N6AJsRwCyX

By Liz Parrish
Sex Differences Crucial for Glucagon Obesity Drug Efficacy
SocialApr 17, 2026

Sex Differences Crucial for Glucagon Obesity Drug Efficacy

Male and female bodies respond differently to glucagon-based obesity drugs, and FGF21 plays an important role—especially in females. This means future treatments need to account for sex differences to be effective and safe. https://t.co/Z9gllk02Dj

By Liz Parrish
Stress‑induced Mitochondrial Condensate Fusion Drives Aging
SocialApr 16, 2026

Stress‑induced Mitochondrial Condensate Fusion Drives Aging

It works by phase separation, where mitochondrial DNA and proteins cluster into droplet-like biomolecular condensates that organize gene activity, but under stress these droplets fuse and grow abnormally, disrupting function and contributing to aging. https://t.co/dRzhFVzxQQ

By Liz Parrish
Four Candidates Target Ultra‑Rare Polish PUS3 Syndrome
SocialApr 16, 2026

Four Candidates Target Ultra‑Rare Polish PUS3 Syndrome

“We have four drug candidates for patients with an ultra-rare disease with Polish origins, the PUS3 syndrome; one of these candidates will be used in practice,” Lisowski said. https://t.co/GTJbPQSdXQ

By Liz Parrish
Glioblastoma's Immune Microenvironment Blocks Checkpoint Therapy
SocialApr 16, 2026

Glioblastoma's Immune Microenvironment Blocks Checkpoint Therapy

The glioblastoma tumor immune microenvironment (TIME) is an immunosuppressive barrier to therapy that encumbers glioblastoma responses to immune checkpoint inhibition (ICI). https://t.co/rgIKZ8N0Q4

By Liz Parrish
Mutated TP53 Turns Tumor Suppressor Into Cancer Promoter
SocialApr 15, 2026

Mutated TP53 Turns Tumor Suppressor Into Cancer Promoter

The TP53 gene makes the p53 protein, which normally helps prevent cancer by controlling cell growth and triggering damaged cells to die, but when it’s mutated it not only loses this protective role but can also help tumors grow. https://t.co/wPedodwV2U

By Liz Parrish
One Injection Restores Hearing via OTOF Gene Therapy
SocialApr 14, 2026

One Injection Restores Hearing via OTOF Gene Therapy

A single injection uses an engineered AAV virus to deliver a healthy OTOF gene into cochlear cells, enabling them to produce otoferlin and restore the ear’s ability to convert sound vibrations into signals the brain can interpret. https://t.co/Lk34jpnRBe

By Liz Parrish
Targeted mRNA Nanoparticles Halt Lung Tumors and Cachexia
SocialApr 12, 2026

Targeted mRNA Nanoparticles Halt Lung Tumors and Cachexia

Follistatin mRNA delivered via targeted lipid nanoparticles enables a dual therapeutic effect by simultaneously suppressing lung tumor growth and preventing cancer-associated muscle wasting (cachexia). https://t.co/56fCFZU0vk

By Liz Parrish
Aging Opens Chromatin, Altering Cell Behavior
SocialApr 12, 2026

Aging Opens Chromatin, Altering Cell Behavior

The researchers then looked into the changes in the old cells that might explain such pronounced differences in behavior compared with the young cells. Liao Says "It seems as though chromatin opens up with age, so to speak." https://t.co/1kdRDunTea

By Liz Parrish
FDA Approves First Gene Therapy for LAD‑I Children
SocialApr 10, 2026

FDA Approves First Gene Therapy for LAD‑I Children

FDA approves first gene therapy, Kresladi, offering a breakthrough treatment for children with the rare immune disorder LAD-I https://t.co/ezWPPEgtd0

By Liz Parrish
Follistatin: Dual Weapon Against Cancer and Muscle Loss
SocialApr 7, 2026

Follistatin: Dual Weapon Against Cancer and Muscle Loss

Follistatin protein, which plays a key role both in inhibiting tumors and promoting muscle tissue growth. https://t.co/OebCo6FSI7

By Liz Parrish
KLF5 Drives Pancreatic Cancer Spread via Gene Rewiring
SocialApr 7, 2026

KLF5 Drives Pancreatic Cancer Spread via Gene Rewiring

A gene called KLF5 may be a key force behind the spread of pancreatic cancer—but not in the way scientists expected. Rather than mutating DNA, it rewires how genes are turned on and off, helping tumors grow and invade new...

By Liz Parrish
Bacteria Harness Modified CRISPR to Activate Genes via RNA
SocialApr 3, 2026

Bacteria Harness Modified CRISPR to Activate Genes via RNA

Scientists discovered that some bacteria use a modified CRISPR system to turn genes on with RNA—confirming a decades-old idea and revealing a new, flexible way to control gene activity. https://t.co/fxLl5ph1ry

By Liz Parrish
IVNS1ABP Mutation Triggers Premature Aging and Neurodegeneration
SocialApr 1, 2026

IVNS1ABP Mutation Triggers Premature Aging and Neurodegeneration

A mutation in the IVNS1ABP gene causes a new disease combining premature aging and severe neurological decline by disrupting cell scaffolding, leading to DNA damage and “zombie-like” senescent cells. https://t.co/xtDrjy72h4

By Liz Parrish
Stroke Triggers Youthful Rewiring in Healthy Brain Regions
SocialMar 31, 2026

Stroke Triggers Youthful Rewiring in Healthy Brain Regions

Study finds stroke can make undamaged parts of the brain appear younger as it rewires to aid recovery https://t.co/r39ZMz5AGU

By Liz Parrish
Gut Microbes May Shape Age‑Related Memory Loss
SocialMar 31, 2026

Gut Microbes May Shape Age‑Related Memory Loss

Memory loss with age varies widely and may be influenced not just by the brain but by gut microbes and body–brain signaling pathways that scientists are still working to understand and potentially treat. https://t.co/ybi9Kp1E90

By Liz Parrish
Aging Silences Brown Fat's Heat Genes via Epigenetics
SocialMar 27, 2026

Aging Silences Brown Fat's Heat Genes via Epigenetics

Brown fat loses its heat-producing function with age due to epigenetic changes that reduce activity of key genes like PGC1A, with specific enhancers playing a critical role in maintaining this function. https://t.co/Dnnawd5r41

By Liz Parrish
SREBP‑2 Links Stress to Cell Death via IRAK1
SocialMar 27, 2026

SREBP‑2 Links Stress to Cell Death via IRAK1

Researchers found that the cholesterol-related protein SREBP-2 can trigger apoptosis under stress by interacting with IRAK1, revealing a new mechanism for how cells self-destruct. This suggests that beyond telomeres, which signal aging through gradual shortening, cells can also initiate death...

By Liz Parrish
Regeneration, Not Just Slowing, Could Reverse Aging
SocialMar 26, 2026

Regeneration, Not Just Slowing, Could Reverse Aging

New Paper - Evidence suggests regeneration may be a natural and achievable biological process worth prioritizing over merely slowing aging—ideally beginning in midlife (around 40–60) to postpone decline, with the potential to reverse aging later in older individuals. Insights from...

By Liz Parrish
Fish Behavior Predicts Lifespan and Aging, Study Shows
SocialMar 23, 2026

Fish Behavior Predicts Lifespan and Aging, Study Shows

A study from Stanford University found that daily behavior patterns—like activity and sleep—can help predict lifespan and track aging in fish. 🧠🐟 Not humans... https://t.co/J89e7AcD7e

By Liz Parrish
Short Telomeres Reveal Accelerated Kidney Aging, Predict CKD
SocialMar 21, 2026

Short Telomeres Reveal Accelerated Kidney Aging, Predict CKD

Researchers found that shorter telomeres and DNA changes in kidney cells may signal faster biological aging of the kidneys and help predict risk for Chronic Kidney Disease earlier than current methods. 🧬 https://t.co/JKRM7xhOnh

By Liz Parrish
FGF21 Activates SLCO4C1 to Curb Liver Fat
SocialMar 20, 2026

FGF21 Activates SLCO4C1 to Curb Liver Fat

FGF21 turns on SLCO4C1, which boosts cAMP signaling and helps prevent fat buildup and inflammation in the liver. https://t.co/fi6RffZKVq

By Liz Parrish
One Short Telomere Triggers Senescence and Instability
SocialMar 17, 2026

One Short Telomere Triggers Senescence and Instability

Researchers using Saccharomyces cerevisiae showed that replicative senescence is triggered when a single shortest telomere falls below a critical length, which both initiates senescence and promotes genomic instability that can transiently enable cells to escape it. 🧬 https://t.co/TOUeXB4L3v

By Liz Parrish
Broken Chromosomes Repaired with Fragments Spark Cancer‑driving Mutations
SocialMar 16, 2026

Broken Chromosomes Repaired with Fragments Spark Cancer‑driving Mutations

Researchers at Cardiff University found that severe DNA mutations called chromoanasynthesis happen when broken chromosomes are repaired using small DNA fragments, causing chaotic duplications that can drive cancer and genetic diseases. 🧬https://t.co/Q9j2hRezTs

By Liz Parrish
Methionine Restriction Cuts Alzheimer Pathology via FGF21 Signaling
SocialMar 16, 2026

Methionine Restriction Cuts Alzheimer Pathology via FGF21 Signaling

A study in Alzheimer's & Dementia found that late-life methionine restriction reduces Alzheimer’s pathology and neuroinflammation in mice by activating the liver–brain FGF21–FGFR1 signaling pathway, independent of metabolic improvements. 🧠 https://t.co/A9kEqNv8pO

By Liz Parrish