← all papers · animal study (62) Science journalism, not medical advice.
- Gene Defect Leaves Sperm Trapped in Cytoplasm2026-07-15
A single gene defect leaves mouse and human sperm wrapped in leftover cytoplasm, misshapen, and infertile
SPEM2 deficiency disrupts spermiation leading to oligoasthenoteratozoospermia and male infertility male infertility genetics spermatogenesis animal study semen quality
- Nanoparticle Packaging Makes an Antioxidant More Testicle-Protective2026-07-06
Chitosan-wrapped naringin protected rat testes from pesticide damage better than the plain compound did
Molecular insights into the protective role of nano-naringin in mancozeb-induced testicular damage and infertility animal study nanomedicine oxidative stress male infertility
- Meet the Immune Cells Guarding Your Sperm Supply2026-06-23
A review of mouse studies argues rogue immune cells in the testis may drive some male infertility
Testicular macrophages: core immune regulators and emerging therapeutic targets in spermatogenic dysfunction male infertility spermatogenesis immunology testicular disease animal study narrative review
- Pesticide Wrecks Rat Sperm; Nanoparticles Help2026-06-22
Niosome-encapsulated l-carnitine and quercetin partially reversed atrazine-induced sperm damage in rats — in groups of 5 animals each
Niosomal l-carnitine and quercetin improve sperm quality and testicular function in atrazine-induced reproductive toxicity in rats animal study oxidative stress male infertility environmental exposure nanomedicine semen quality
- Melatonin Reverses Shift-Work-Like Erectile Dysfunction — In Rats2026-06-11
Melatonin partly restored erectile function in rats with disrupted light cycles by blocking a cell-death pathway
Melatonin ameliorates circadian rhythm disruption induced erectile dysfunction by inhibiting oxidative stress mediated pyroptosis via Nrf2/HO‑1 axis erectile dysfunction animal study oxidative stress circadian rhythm
- The Gene That Kills Erections in Hypertensive Rats2026-06-05
In hypertensive rats, Ephx2 overexpression in penile endothelium suppresses the AKT/eNOS pathway; silencing it or giving icariin restored measurable erectile function
Suppression of Ephx2 in Endothelial Cells of Penile Cavernous Tissue Improves SHR Erectile Function animal study erectile dysfunction hypertension vascular health traditional chinese medicine genetics
- Chinese Herb Mix Repairs Cadmium-Damaged Sperm — In Mice2026-06-04
A 7-herb TCM formula reversed cadmium-induced testicular damage in mice, improving sperm DNA fragmentation and hormone levels — no human data exists
A mechanistic study on the repair of cadmium-induced male infertility using Yishen Tongluo formula based on network toxicology and experimental validation male infertility animal study oxidative stress traditional chinese medicine DNA fragmentation environmental exposure
- Two Cheap Drugs Beat One for Diabetic Testis Damage — In Mice2026-06-02
Combination metformin + vitamin C outperformed either drug alone on sperm viability and Johnsen scores in streptozotocin-diabetic mice (n=6/group)
Protective Effects of Metformin and Vitamin C on Diabetes-Induced Testicular Dysfunction animal study diabetes male infertility oxidative stress spermatogenesis
- Radiation Snaps the Hinge That Makes Sperm Swim2026-05-27
Synchrotron imaging in irradiated mice reveals the sperm annulus — a structural ring — as the primary fracture point after ionizing radiation exposure
Annulus Fracture Underlies Radiation-Induced Sperm Dysfunction Revealed by Multimodal Nano-Imaging animal study male infertility spermatogenesis environmental exposure semen quality
- Their Own Herbal Formula Fixed Sperm — in Mice2026-05-22
Mouse study: a team's proprietary herbal decoction improved sperm count and motility after drug-induced damage, via PI3K/Akt and MAPK pathways
Chinese Medicine Sheng Jing Decoction Alleviates Oligoasthenospermia by Modulating PI3K/Akt and MAPK Signaling Pathways animal study male infertility traditional chinese medicine spermatogenesis oxidative stress
- Two Supplements Blunt Chemo's Testicular Damage — In Rats2026-05-21
Melatonin and apigenin each partially reversed paclitaxel-induced testicular damage in rats, raising Johnsen scores from 5 back to ~8 out of 9
Comparative Protective Effects of Melatonin and Apigenin Against Paclitaxel-Induced Testicular Injury in Rats: Oxidative Stress, DNA Damage, Apoptosis, and NF-κB Signaling animal study oxidative stress spermatogenesis testicular disease male infertility
- Brain Immune Cells Gatekeep Fertility Hormones2026-05-21
Brain immune cells (microglia) use RANK signaling to control GnRH neurons — and rare RANK variants show up in 564 hypogonadism patients
Microglia Rank Signaling Regulates GnRH Neuronal Function and the Hypothalamic-Pituitary-Gonadal Axis hypogonadism infertility genetics animal study
- Nerve-Repair Bubbles Restore Erections in Rats2026-05-20
Rat study: injecting lipid-packed cellular vesicles near injured cavernous nerves boosted ATP, cut apoptosis, and raised intracavernous pressure.
Microvesicles Rewire Nerve Energy to Restore Erections in Rats animal study erectile dysfunction nanomedicine oxidative stress
- New Gene Found Behind Structurally Broken Sperm2026-05-19
Knockout mice lacking DNAI4 are completely infertile with shattered sperm flagella, pointing to a candidate gene for the ~40% of human MMAF cases still unexplained.
DNAI4 is Required for Flagellum Assembly and Male Fertility in Mice animal study male infertility genetics spermatogenesis
- Lab Mice Can't Fake 30 Years of Kidney Stones2026-05-18
Most kidney stone animal models induce acute disease; human idiopathic CaOx stones develop over decades — a mismatch this review maps out.
Animal Models for Calcium Oxalate Kidney Stone Research kidney stones animal study narrative review evidence quality
- Birch Tree Compound Fights Post-Surgery ED — In Rats2026-05-12
Betulinic acid reduced penile smooth muscle apoptosis in nerve-injured rats, but this is a 5-rats-per-group rodent study with no funding disclosure
Betulinic Acid Ameliorates Cavernous Nerve Injury-Induced Erectile Dysfunction Through Nrf2/HO-1 Pathway Activation and Inhibition of Mitochondrial Damage-Dependent Corpus Cavernosum Smooth Muscle Cells Apoptosis animal study erectile dysfunction oxidative stress surgical outcomes
- Chemo Wrecks Testes — A Gut Molecule Probably Won't Fix It2026-04-19
Doxorubicin scrambles testicular metabolism in mice; a gut-derived molecule reduced cell-dish damage, but the human genetic signal didn't survive correction for multiple comparisons
Metabolomics and Exploratory Mendelian Randomization Identify Indole-3-Propionic Acid Associated with Doxorubicin-Induced Testicular Injury animal study male infertility oxidative stress biomarkers
- Testosterone-Tipped Nanoparticles Find the Testes in Mice2026-04-15
Nanoparticles carrying green tea extract (EGCG) and zinc reduced testicular inflammation and preserved sperm structure in a mouse orchitis model
Testosterone-Modified Liposomes Loaded with the Zn-Polyphenol Complex for Treatment of Male Infertility animal study male infertility inflammation oxidative stress spermatogenesis
- The Gene That Breaks Sperm—But Not Eggs2026-04-15
Mice lacking the RNA-binding protein LARP1 produce sperm with defective flagella, malformed heads, and poor motility — females are unaffected
Deficiency of LARP1 Impairs Spermatogenesis and Leads to Male Subfertility in Mice animal study male infertility spermatogenesis genetics
- AI Designs an Iron Nanoparticle to Treat Diabetic ED2026-04-14
An ML-guided iron nanozyme reduced oxidative stress in diabetic rat corpus cavernosum, restoring erectile function in an animal model
Design of Single-Atom Nanozymes for Precision Treatment of Erectile Dysfunction with Integrated Single-Cell RNA Sequencing and Machine Learning erectile dysfunction diabetes nanomedicine oxidative stress artificial intelligence animal study
- Anti-Aging Peptide Fights Post-Surgery ED — in Rats2026-04-08
A Klotho-derived peptide reduced penile fibrosis and preserved erectile function in rats after cavernous nerve injury — no human data yet
Klotho-Derived Peptide Preserves Erectile Function by Limiting Fibrosis, Oxidative Stress, and Apoptosis of Penile Smooth Muscle Cells in Cavernous Nerve Injured-Rats Through Suppression of the TGF-β1/TGF-β Type II Receptor Signaling animal study erectile dysfunction oxidative stress prostate cancer
- Fasting Hormone Reverses SSRI Sexual Side Effects — In Rats2026-04-05
Asprosin injected directly into rat brains reversed paroxetine-induced erectile dysfunction, sperm loss, and testicular damage across all 5 endpoints measured
Asprosin Infusion Modulates Central Circuits to Rescue Selective Serotonin Reuptake Inhibitor-Induced Male Dysfunction antidepressants sexual dysfunction animal study semen quality
- Robot Fixes Floppy Ureteroscope Tip by 70%2026-04
A foldable bedside robot corrected ureteroscope tip bending error by 69.64% using a Bouc-Wen hysteresis model, validated in kidney phantoms and live animals.
Optimization Design and Bending Hysteresis Compensation of a Flexible Ureteroscopy Robot kidney stones surgical outcomes animal study robotics
- A Chinese Herbal Formula Targets Iron Cell Death — in Rats2026-04
TCM formula SFZYD reduced ferroptosis markers and improved erectile function in diabetic rats via the Nrf2/HO-1/GPX4 pathway — no human data
Mechanism of Shaofu Zhuyu Decoction in Improving Diabetes Mellitus Erectile Dysfunction Inhibition of Ferroptosis Based on Network Pharmacology and Experimental Validation diabetes erectile dysfunction traditional chinese medicine oxidative stress animal study
- Three Mouse Studies Don't Make a Therapy2026-03-31
A systematic review of exactly 3 mouse studies concludes fat-cell secretions partially regenerate chemotherapy-damaged testes — in rodents
Adipose-Derived Mesenchymal Stem Cell Secretome Promotes Testicular Regeneration Following Chemically Induced Injury: A Review of Preclinical Studies male infertility stem cells animal study spermatogenesis
- Dog Tumor Marker Study Oversells Its Findings2026-03-31
87% of canine testicular seminomas expressed ezrin; higher expression correlated with the more invasive diffuse subtype (n=23)
Histomorphological Features and Ezrin Expression in Testicular Seminomas in Dogs: An Association with Potential Prognostic Value animal study testicular cancer pathology biomarkers
- A Mouse "Space Sperm" Study Finds a Fertility Protein2026-03-31
Mouse and cell study ties a mitochondrial peptide to sperm cell survival under simulated microgravity stress
Mitochondrial-Derived Peptide MOTS-c Targets SLC7A11 to Preserve Spermatogenesis by Suppressing Ferroptosis male infertility spermatogenesis oxidative stress animal study biomarkers
- Too Many Gene Copies Wreck Yak Hybrid Sperm2026-03-21
Yak Y chromosomes carry 2–4× more active sperm-related gene copies than cattle; researchers propose this mismatch explains complete hybrid male sterility
Divergent Amplification of Y-Linked Dosage-Sensitive Genes Triggers Regulatory Mismatch Underlying Cattle-Yak Male Sterility male infertility spermatogenesis genomics animal study
- New Drug Saves Mice From Fatal Kidney Disease2026-03-20
In mice bred to die of kidney failure by 15 weeks, a daily pill restored normal survival and stopped stone formation entirely
N-propargylglycine restores survival by preventing calcium oxalate stone formation, tubular injury, and kidney dysfunction in a lethal mouse model of primary hyperoxaluria type 2 kidney stones animal study genetics chronic kidney disease
- Heat Kills Sperm. Can L-Citrulline Help? Ask a Pig2026-03-20
A narrative review of mostly animal data argues L-citrulline may protect sperm from heat damage via nitric oxide pathways — human evidence is thin
Heat Stress-Mediated Oxidative Damage in Male Germ Cells: Potential Protective Effects of L-Citrulline oxidative stress male infertility spermatogenesis animal study
- One Gene Deletion Kills All Sperm Maturation in Mice2026-03-20
Knocking out a single gene in mice triggers complete male infertility by blocking the histone-to-protamine swap that compacts sperm DNA
PRAMEL12 orchestrates spermiogenesis to ensure male fertility in mice animal study male infertility spermatogenesis genetics epigenetics
- Ginger Improves Sperm in Obese Rats — Humans TBD2026-03-20
Ginger and fenofibrate each reversed obesity-induced sperm and hormone deficits in rats — no human data exists
Effect of Ginger Extract and/or Fenofibrate on the Associated Infertility of Experimentally Induced Obese Wistar Albino Male Rats animal study obesity male infertility oxidative stress spermatogenesis testosterone
- The Cilia Gene Running the Sperm Factory2026-03-15
Knocking out a cilia gene in fish collapses the testicular niche — sperm motility fails and Sertoli cells die off before sperm do
NPHP4 Deficiency Disrupts Testicular Homeostasis and Impairs Male Fertility in Medaka (*Oryzias latipes*) animal study male infertility spermatogenesis genetics
- In Cryptorchidism, the Support Cells Fail First2026-03-07
In a mouse cryptorchidism model, Sertoli and peritubular myoid cells show stress signals within 3 days — before germ cells begin dying
Somatic Cell Dysfunction Precedes Testicular Degeneration in a Surgical Model of Cryptorchidism cryptorchidism animal study pediatric urology spermatogenesis
- Lichen Extract Nearly Triples Sperm Motility — In Rats2026-03-05
Atranorin, a lichen-derived compound, restored sperm motility by 189% and testosterone by 90% in alloxan-diabetic rats at 170 mg/kg.
Extraction, Characterization, and Biological Evaluation of Atranorin Against Diabetes-Induced Reproductive Dysfunction Through Modulation of Oxidative Stress, Inflammatory Pathways and Key Reproductive Enzymes animal study male infertility oxidative stress semen quality testosterone
- Mom's Diet Shapes Her Son's Sperm, in Cattle2026-03
Genetics explains only ~15% of male infertility; a cattle review argues epigenetic marks fill the gap — and pass across generations
Bull Fertility and Epigenetics: Exploring Influences Beyond Genetics animal study male infertility genetics epigenetics biomarkers
- One Gene Knockout Tanks Sperm Count in Mice2026-02-28
Germ-cell deletion of TNXB in mice causes testicular atrophy, tubular degeneration, and near-total loss of spermatogenesis
TNXB Regulates Spermatogenesis by Maintaining Cytoskeleton and Cell Junction Stability male infertility genetics animal study semen quality
- Wheat Protein Tanks Rat Testosterone and Sperm2026-02-27
Wheat germ agglutinin at 250 mg/kg/day impaired sperm quality, cut testosterone, and damaged testicular tissue in prepubertal rats across 2–10 weeks
From Food to Infertility: Disruption of the Male Reproductive Axis by Wheat Lectin in Rats animal study male infertility oxidative stress spermatogenesis
- Lead Ages Immune Cells. Those Cells Tank Your Sperm.2026-02-27
A 170-man study linked urinary lead and cadmium to lower sperm motility; mouse work traced the mechanism to senescent immune cells in the epididymis.
Epididymal Macrophage Senescence Contributes to Sperm Motility Decrease upon Environmental Stress male infertility environmental exposure immunology animal study cross-sectional semen quality
- Horny Goat Weed Gets a Mechanistic Review2026-02-26
A narrative review maps how icariin, horny goat weed's active compound, may improve sperm function — mostly in rodents
Icariin in Male Reproduction: Multi-Target Pharmacological Mechanisms and Therapeutic Potential traditional chinese medicine male infertility oxidative stress animal study spermatogenesis
- Diet Sweeteners Flag a Fertility Gene — In Mouse Cells2026-02-17
Computational screening flagged aspartame, neotame, and sucralose as reproductive toxins targeting FGFR1; validated only in mouse Leydig cells in a dish
Artificial sweeteners and male infertility: Network toxicology and experimental evidence reveal FGFR1 as the critical target. male infertility environmental exposure animal study spermatogenesis
- TCM for ED: Mostly Animal Data, Few Clinical Trials2026-02-13
A narrative review of TCM mechanisms for ED — heavy on preclinical theory, thin on human evidence
Mechanism of traditional Chinese medicine in treating erectile dysfunction: A review erectile dysfunction traditional chinese medicine animal study
- The Cleanup Crew Sperm Can't Live Without2026-02-13
Review surveys mouse knockout evidence linking ubiquitin-editing enzymes to spermatogenic failure; no human clinical data
The Potential Role of Deubiquitinating Enzymes (DUBs) in Male Fertility male infertility genetics animal study spermatogenesis
- Plant Compound Cuts Kidney Crystals—In Mice Only2026-02-09
Luteolin reduced calcium oxalate crystal deposition in mice and blocked PI3K/Akt signaling in kidney cells—no human data.
Luteolin Prevents Hyperoxaluria-Induced Renal Injury by Inhibiting Crystal Deposition and Renal Inflammation kidney stones animal study inflammation traditional chinese medicine
- Ginseng Compound Raises Testosterone — In Obese Mice2026-01-28
A ginseng-derived compound raised testicular testosterone in high-fat-diet mice by activating the cAMP/PKA/CREB pathway — no human data yet
Ginsenoside Rf Promotes Testosterone Synthesis Through the cAMP/PKA/CREB Signaling Pathway to Improve Obesity-Related Male Hypogonadism animal study hypogonadism testosterone obesity traditional chinese medicine
- X-Linked Gene Found in Sperm Failure, Monkeys Confirm It2026-01-27
A primate-exclusive X-linked gene, TFDP3, was defective in 8 infertile men with OAT — and silencing it in monkeys replicated the phenotype
Deficiency of Primate-Specific TFDP3 Causes Male Infertility with Oligoasthenoteratozoospermia in Humans and Cynomolgus Monkeys genetics male infertility spermatogenesis animal study
- Childhood Obesity Shrinks Testicles Before Puberty Starts2026-01-27
Obese prepubertal boys had smaller testicular volume, shorter penis length, and lower testosterone than normal-weight peers in a 60-boy study.
Obesity Impairs Male Reproductive Development in Prepubertal Boys via Local Adipose Tissue Inflammation and the STAT3/CYP19A1 Pathway obesity male infertility testosterone pediatric urology inflammation animal study
- New Lab Bench for a Rare Childhood Testicular Cancer2026-01-12
First PDX model for pediatric testicular yolk sac tumor, validated against a 109-patient retrospective series; 91.7% of patients presented at stage I
Establishment and Characterization of a Testicular Yolk Sac Tumor PDX Model testicular cancer pediatric urology animal study surgical outcomes
- Blocking One Protein Protects Penile Vessels in Diabetic Rats2025-12-16
Rat study identifies a molecular pathway linking high blood sugar to penile endothelial aging — no human data yet
Inhibition of c-Jun/Bak Signaling Alleviates Endothelial Cell Senescence and Inflammation Caused by Mitochondrial Dysfunction in DMED erectile dysfunction animal study oxidative stress vascular health inflammation
- Ancient TCM Formula Targets Copper-Mediated Sperm Death2025-12-13
A rat study found Zuogui Wan improved sperm quality partly by reducing testicular copper accumulation and suppressing cuproptosis
Research on the Mechanism of Zuogui Wan in Ameliorating Oligoasthenozoospermia in Rats via Modulating Cuproptosis-Related Pathways animal study male infertility spermatogenesis traditional chinese medicine oxidative stress
- Mice Missing CFAP77 Are Subfertile, Not Sterile2025-11-29
Mice engineered to lack a sperm tail protein called CFAP77 had sluggish sperm and fewer pups, but weren't infertile
Microtubule Inner Protein CFAP77 Contributes to Sperm Motility and Male Fertility in Mice male infertility animal study spermatogenesis genetics
- Herbal Skin Patch Protects Rat Sperm from Plasticizer2025-11-28
In rats exposed to DEHP plasticizer, icariin microneedle patches reduced testicular damage and outperformed oral icariin — in rats
Transdermal Delivery of Icariin via Microneedle Patches Attenuates Phthalate-Induced Testicular Injury animal study male infertility traditional chinese medicine environmental exposure
- Gut Metabolite Cuts Kidney Stone Damage—in Mice2025-11-19
A pomegranate-derived gut metabolite reduced kidney crystal deposits in mice by reactivating a mitochondrial cleanup pathway via PCK1
Urolithin A Protects Against Calcium Oxalate-Induced Crystal Formation and Kidney Injury by Regulating PCK1 to Restore Mitophagy Function in Kidney Stone Disease kidney stones animal study
- Chinese Herbal Mix Reverses Rat Infertility2025-10-31
TCM formula QYYJF improved sperm motility and HPG axis hormones in chemotherapy-damaged rats, via 25 identified serum compounds
Qingyu Yangjing Formula Ameliorates Cyclophosphamide-Induced Oligoasthenospermia by Regulating the Hypothalamic-Pituitary-Gonadal Axis and Inhibiting Testicular Oxidative Stress and Apoptosis in Rats traditional chinese medicine male infertility animal study semen quality
- Swapping One Protein Rescues Infertile Mouse Sperm Cells2025-10-28
Deleting a common protein-recycling complex stops sperm cell development in mice — swapping in a related complex fixes it
The constitutive 20S proteasome is required for the maintenance and differentiation of spermatogonia in mice male infertility spermatogenesis animal study genetics
- TCM Formula Improves Sperm in Fat Mice2025-10-16
A traditional Chinese herbal formula reduced abnormal sperm and boosted concentration in obese mice — in mice only
Er-Chen decoction alleviates spermatogenic dysfunction in obese mice by tuning the SIRT1/p53 axis male infertility traditional chinese medicine animal study
- Nanoparticles Sneak ATP Past the Testicular Wall2025-10-13
ATP-loaded nanoparticles crossed the testicular barrier in mice and improved sperm motility — no human data yet
Blood-Testis Barrier-Crossing Extracellular Vesicles for Asthenozoospermia Therapy via Synergistic ATP Replenishment and Ferroptosis Suppression male infertility spermatogenesis stem cells oxidative stress animal study
- CoQ10 Cuts Varicocele Damage — In Rats2025-10-07
CoQ10 reduced oxidative stress and improved sperm parameters in rat varicocele and hypoxia models via the caspase1-IL1β-egr2 pathway
Ameliorative Effects of Coenzyme Q10 Against Hypoxia-Induced and Varicocele-Associated Spermatogenesis Dysfunction in Rat animal study male infertility semen quality testicular disease
- GLP-1 Drugs and Sperm: Mostly Rat Data So Far2025-09-26
Ozempic-class drugs may help sperm in obese men, but most of the evidence so far is from rats
Impact of GLP-1 Receptor Agonists on Male Fertility: Emerging Evidence and Future Directions obesity diabetes hypogonadism spermatogenesis animal study narrative review
- 18 'Male Fertility Genes' Turn Out Unnecessary2025-06-26
18 testis-enriched genes knocked out one by one in mice — none of them mattered for fertility
Mouse Genome Engineering Uncovers 18 Genes Dispensable for Male Reproduction animal study genetics male infertility semen quality
- A Boy's Rare Mutation, Recreated in Mice2025-06-03
One boy's gene mutation was knocked into mice, who developed undescended testes and poor sperm quality
Cryptorchidism: Novel genetic insights into CCDC149 mutations cryptorchidism genetics animal study case report
- Herbal Capsule Tackles BPH and ED Together in Rats2025-05-27
A Chinese herbal capsule eased both prostate enlargement and erectile dysfunction in rats—finasteride only fixed one
Intervention of Bazi Bushen Capsule on Benign Prostatic Hyperplasia Concomitant with Erectile Dysfunction Induced by Testosterone Supplementation in Spontaneously Hypertensive Rats BPH erectile dysfunction traditional chinese medicine animal study inflammation