Lion’s Mane for Joints, Immune Boost, and Plastic-Eating Fungi,

Hi Shroomers. This week’s scan moves from your immune system to outer space. We’re looking at enoki restoring immune balance, lion’s mane slowing joint damage, and reishi calming gut inflammation, alongside some wild ecological discoveries like landfill fungi that break down plastic and mushrooms that could help sustain long-term space missions. Plus, new psilocybin research examining how the compound shifts reward-seeking behavior and drug-seeking patterns.

Immune defense boost 🛡️ Enoki mushroom (Flammulina rossica) extract helped restore immune function when the immune system was weakened. In mice given 125–500 mg/kg daily, the extract increased helper immune cells to 31-33% vs. 28% in controls, improving the body’s key immune balance. Immune activity also surged, with spleen immune cell growth reaching 213% of normal levels and multiple immune signals rising.

Joint damage slowdown 🦵 Lion’s mane mushroom (Hericium erinaceus) mycelium combined with undenatured type II collagen helped slow osteoarthritis damage in rats with surgically induced knee arthritis. Animals given 100 mg/kg of lion’s mane mycelium, alone or with collagen, showed significantly less cartilage breakdown and improved bone structure compared with untreated osteoarthritis controls. The treatment also reduced inflammatory joint signals IL-1β and TNF-α and lowered cartilage-degrading enzymes such as MMP-3, MMP-13, and ADAMTS5, which are strongly linked to osteoarthritis progression.

Colitis inflammation relief 🌿 Reishi mushroom (Ganoderma lucidum) polysaccharides helped protect the gut from ulcerative colitis damage in mice. The treatment reduced disease activity scores and prevented DSS-induced weight loss, while boosting antioxidant defenses like superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) in the blood. Gut inflammation also dropped, with TNF-α and IL-6 levels significantly reduced, and the microbiome shifted toward healthier bacteria such as Muribaculum.

UV skin protection ☀️ Cloud ear mushroom (Auricularia polytricha) extract helped protect skin cells from UVB radiation damage. In human skin cells exposed to UVB, a water extract at 100 µg/mL significantly reduced oxidative stress and cell death, improving cell survival after radiation doses as high as 15–90 mJ/cm². The extract also lowered reactive oxygen species (ROS) and reduced apoptosis, key processes that drive sun damage and photoaging. https://www.thieme-connect.com/products/ejournals/html/10.1055/s-0045-1815110

Cocaine-seeking drop 📉 Psilocybin helped animals stop cocaine-seeking behavior faster during recovery training. In rats trained to self-administer cocaine (0.25–0.5 mg/kg per infusion), two psilocybin doses (1.25 mg/kg then 5 mg/kg) significantly reduced lever-pressing for cocaine one day after the second dose. However, when drug-associated cues returned, cocaine-seeking behavior came back, showing the treatment did not significantly prevent relapse.

Reward-seeking shift 🎯 Psilocybin changed how rats evaluated rewards during decision-making tasks. Rats given a single 1 mg/kg psilocybin dose chose the large delayed reward less often 48 hours later, showing a measurable drop in reward-seeking behavior compared with untreated animals. The effect appeared across multiple delay intervals (1, 10, and 20 seconds), indicating psilocybin altered how the animals weighed reward value rather than simply their tolerance for waiting.

New termite mushroom 🪲 A newly identified termite mushroom (Termitomyces pseudopakistanensis) from West Bengal contains several bioactive compounds linked to antioxidant and antimicrobial activity. Chemical analysis found lycopene, beta-carotene, flavonoids, and phenols, while extracts showed antioxidant activity with EC50 values ranging from 658.66 to 1845.08 µg/mL.

Plastic-eating fungi 🧃 Landfill fungi isolated from Indonesia were able to break down low-density polyethylene (LDPE), one of the most common plastics used in packaging. After 28 days, several strains reduced plastic mass by 15–22%, with Aspergillus and Cladosporium isolates showing the strongest activity at 22.11%, 21.91%, and 22.14% weight loss. Other fungi such as Penicillium, Trichoderma, and Fusarium also degraded plastic by 15.32–18.18%, showing that diverse landfill fungi can begin breaking down stubborn plastics under the right conditions.

Space survival fungi 🚀 Mushrooms (Basidiomycota species) could support long-term space missions by producing food, recycling waste, and helping regulate air inside closed life-support systems. Mushrooms contain 20–40% protein by dry weight and grow efficiently on organic waste, making them a compact way to generate edible biomass during extended missions. Their ability to tolerate microgravity and radiation-intensive environments also makes fungi promising candidates for bioregenerative life-support systems in future space habitats.

Protein porridge upgrade 🥣 Oyster mushroom (Pleurotus ostreatus) powder boosted the nutrition of sorghum–millet porridge while keeping its taste and texture acceptable. Adding mushroom powder increased protein, mineral, and fiber content, creating a more nutrient-dense food from the same grain base. Taste testing showed the fortified porridges still scored well for flavor, appearance, and texture, supporting mushrooms as an easy way to upgrade staple foods.

Better mushroom rehydration 💧 Hotter soaking water helps dried oyster mushrooms (Pleurotus ostreatus) regain their structure faster and more completely. Increasing the soaking temperature significantly improved water absorption and rehydration speed, restoring mushroom texture more effectively than lower temperatures. The kinetic model showed faster moisture uptake at higher temperatures, indicating that warm soaking conditions improve rehydration efficiency.

Cordyceps yield boost 🧬 Cordyceps mushroom (Cordyceps militaris) grew very differently depending on the grain substrate used during cultivation. Brown rice produced the highest fruiting body yield (~9.5 g per bottle) compared with wheat (~8.1 g) and millet (~7.4 g) under the same conditions. In liquid culture, optimized broth media also increased mycelial biomass production, showing that substrate choice can significantly improve cordyceps yield during cultivation.