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Woman smiling at the camera, working out on a blue yoga mat.
Keeping Older Muscles Strong
From stem cell-recruiting gels to hormone cycle restoration, Tracy Criswell has big ideas about how to combat age-related decline in muscle regeneration.
Keeping Older Muscles Strong
Keeping Older Muscles Strong

From stem cell-recruiting gels to hormone cycle restoration, Tracy Criswell has big ideas about how to combat age-related decline in muscle regeneration.

From stem cell-recruiting gels to hormone cycle restoration, Tracy Criswell has big ideas about how to combat age-related decline in muscle regeneration.

hormones

Two pink-colored, rod-shaped bacteria interacting with a blue-colored human cell
Gut Bacterium Linked to Depression in Premenopause
Alejandra Manjarrez, PhD | Mar 17, 2023 | 2 min read
The opportunistic pathogen Klebsiella aerogenes degrades estradiol and induces depressive-like behavior in mice, a study finds.
Fluorescent image of breast tissue
Hormone Therapy Triggers Male Gene Patterns in Transgender Men’s Cells
Holly Barker, PhD | Mar 15, 2023 | 3 min read
A study deepens the scientific understanding of how androgens influence breast tissue, which may offer clues to treating breast cancer. 
Learn how recombinant proteins move the diagnostic industry forward
Emergent Recombinant Proteins in Clinical Diagnostics
Scripps Laboratories | 1 min read
A new era of reliable recombinant proteins makes it possible for researchers to replace tissue-derived biomarkers in a variety of diagnostic assays.
A cross-section of mouse brain showing the locus coeruleus in fluorescent green
Hormone Sobers Up Drunken Mice: Study
Alejandra Manjarrez, PhD | Mar 8, 2023 | 3 min read
A hormone naturally induced by alcohol consumption accelerates the recovery of mice after binge drinking by activating neurons involved in arousal and alertness.
A pair of prairie voles (Microtus ochrogaster)
Monogamous Rodents Don’t Need “Love Molecule” To Pair Up
Natalia Mesa, PhD | Jan 27, 2023 | 4 min read
Prairie voles lacking functional receptors for oxytocin form normal social bonds, a finding that could explain the hormone’s clinical failures.
Maintaining Hormone Balance Through RNA Decay
The Scientist Speaks - What Comes Up Must Go Down: Maintaining Hormone Balance Through RNA Decay
The Scientist’s Creative Services Team | 1 min read
Neelanjan Mukherjee discusses how RNA decay is essential for regulating a blood pressure-controlling hormone.
a centrifuge from a birds-eye view, spinning quickly with a colored blur 
Scientists Use Centrifuge to Discover a Hormone
Katherine Irving | Jan 23, 2023 | 3 min read
A new method for isolating extracellular fluid aims to discover molecules with therapeutic potential that were previously obscured by highly abundant proteins.
blue-gloved hands injecting mouse with syringe
Sex of Researcher Influences Ketamine’s Effects in Mice: Study
Shawna Williams | Sep 8, 2022 | 3 min read
The findings likely have implications for animal research far beyond the study of antidepressants.
A black dog with tearful eyes looks at the camera
Dogs Cry Tears of Joy: Study
Christie Wilcox, PhD | Aug 22, 2022 | 6 min read
Pet dogs produce a larger volume of tears when they are reunited with their owners than with acquaintances, possibly because of surging oxytocin levels—findings that could be the first evidence of emotional crying in nonhuman animals.
brown spotted octopus blending in with its background
Steroids May Explain Octopuses’ Self-Starvation
Andy Carstens | May 16, 2022 | 2 min read
Two glands increase steroid production after female California two-spot octopuses mate, a study finds. Those hormones may be responsible for the animals’ self-destructive behavior.
Book cover of Why We Love: The New Science Behind Our Closest Relationships
Opinion: Can Science Capture Love?
Anna Machin | Mar 14, 2022 | 4 min read
Researchers who study the phenomenon in humans should incorporate subjective experiences into data on love.
Book cover of Why We Love: The New Science Behind Our Closest Relationships
Book Excerpt from Why We Love
Anna Machin | Mar 14, 2022 | 5 min read
In Chapter 1, “Survival,” author Anna Machin describes the health benefits of strong human bonds.
A black and brown ant stands over various sizes of whitish purple, oval shaped larvae and yellow, oblong eggs
A Single Transcription Factor Changes Ants to Queens
Abby Olena, PhD | Nov 5, 2021 | 3 min read
The transcription factor can also drive the opposite transition depending on which hormone activates it, according to a new study.
Illustration of a rat with red, white and blue sections
Hormones May Contribute to Asymmetrical Effects of Brain Injury
Catherine Offord | Sep 2, 2021 | 4 min read
Researchers studying rats claim to have found a novel connection between damage on one side of the brain and problems with the posture or movement of limbs on the opposite side of the body.
A woman in a colorful blouse smiles in front of a blurred background of books on shelves
Darby Saxbe Digs into Relationships’ Effects on Human Biology
Shawna Williams | Aug 1, 2021 | 3 min read
In her current work, the University of Southern California psychologist is examining how the transition to fatherhood affects men’s brains.
Black and white image of Jean Wilson in an office, wearing a lab coat.
Endocrinologist Jean Wilson Dies at 88
Lisa Winter | Jun 24, 2021 | 2 min read
The University of Texas Southwestern professor’s research focused on the androgen hormones that cause male sexual differentiation and may also lead to prostate disease.
Hippocampal neurons are labeled in blue and purple on a black background
New Role for Leptin: Promoting Synapse Formation in Rat Neurons
Abby Olena, PhD | May 20, 2021 | 3 min read
The hormone, which is well known for regulating appetite, appears to influence neuronal development—a finding that could shed light on disorders such as autism that involve dysfunctional synapse formation.
High Stress Hormone Levels Halt Mouse Fur Growth
Jef Akst | Apr 1, 2021 | 4 min read
Corticosterone interferes with signaling in the skin that normally activates hair follicle stem cells, possibly explaining the link between stress and hair loss.
Infographic: Measurements that Predict People’s Behavior
Paul J. Zak | Oct 1, 2020 | 1 min read
Changes in blood levels of oxytocin and adrenocorticotropic hormone and patterns of neural activity predict how much money people will donate to a cause with high accuracy.
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