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61,005 resultsShowing papers similar to Oral Administration of Oyster Peptide Prevents Bone Loss in Ovariectomized Mice
ClearPharmacodynamic Material Basis and Potential Mechanism Study of Spatholobi Caulis in Reversing Osteoporosis
Researchers investigated the pharmacological mechanisms of Spatholobi Caulis (SC) in reversing osteoporosis, finding it operates through multi-component, multi-target pathways with the AGE-RAGE signaling pathway identified as the primary regulatory mechanism.
Mollusk shells as marine bioactive materials: Composition, bioactivities, and prospects for food and health applications
Researchers reviewed the bioactive properties of marine mollusk shells, which are generated in large quantities as seafood processing waste. They found that shell-derived compounds exhibit antioxidant, anti-inflammatory, antimicrobial, and bone-building properties, supporting potential uses as natural calcium sources and functional food ingredients. The study highlights an opportunity to turn an abundant waste material into valuable health and food science applications.
Bridging relevance between microplastics, human health and bone metabolism: Emerging threats and research directions
Researchers reviewed how microplastics — tiny plastic fragments that accumulate in tissues throughout the body — may disrupt bone metabolism by triggering inflammation, oxidative stress, and hormonal interference, raising concern that widespread microplastic exposure could contribute to bone diseases like osteoporosis.
Chronic exposure to polystyrene microplastics triggers osteoporosis by breaking the balance of osteoblast and osteoclast differentiation
Mice that drank water containing polystyrene microplastics for six months developed significant bone loss resembling osteoporosis, with weakened bone structure and reduced bone formation. The microplastics triggered inflammation in bone stem cells and disrupted the balance between bone-building and bone-breaking processes, suggesting that long-term microplastic exposure could contribute to bone disease.
Effects of Polystyrene Microplastics on Bone-related Protein Expression, Mineralization Capacity, and Mitochondrial Function in Osteoblast-like Cells (mg-63)
Osteoblast-like cells (MG-63) were exposed to polystyrene microplastics at 5–50 µg/mL, and bone-related protein expression, mineralisation capacity, and mitochondrial function were assessed. PS-MPs were internalised and reduced mineralisation and osteocalcin levels while impairing mitochondrial bioenergetics, suggesting microplastics may negatively affect bone cell function.
RANKL/OPG axis as a therapeutic target for microplastic-induced bone loss: Mechanistic insights from transcriptomic and functional validation
This study found microplastic deposits in human bone tissue and showed that MPs disrupt bone metabolism by altering the RANKL/OPG signaling axis, a key regulator of bone remodeling. Transcriptomic and functional analyses identified therapeutic target pathways that could potentially protect against microplastic-induced bone loss.
Antidiabetic Effect of Collagen Peptides from Harpadon nehereus Bones in Streptozotocin-Induced Diabetes Mice by Regulating Oxidative Stress and Glucose Metabolism
Researchers extracted collagen peptides from Bombay duck fish bones and tested their effects on diabetic mice. The peptides helped reduce blood sugar levels, improved liver function, and decreased oxidative stress by boosting antioxidant enzyme activity. The study suggests these marine-derived peptides could be a promising natural supplement for managing blood sugar and reducing diabetes-related complications.
Oridonin-induced ferroptosis and apoptosis: a dual approach to suppress the growth of osteosarcoma cells
Researchers found that oridonin, a natural plant compound, can trigger two different types of cell death simultaneously in bone cancer cells. This dual mechanism makes it effective at suppressing tumor growth in osteosarcoma. The study suggests oridonin could be a promising therapeutic agent for treating this type of bone cancer.
Microplastics extraction from oyster tissue v1
Researchers developed and validated a protocol for extracting microplastics from oyster tissue, addressing the challenges of isolating plastic particles from a complex biological matrix that includes lipids, proteins, and mineral content. The method enables reliable quantification of microplastic contamination in bivalves — a widely consumed seafood and established bioindicator of coastal pollution — supporting standardised monitoring of microplastic uptake in marine food species.
Quercetin alleviates cyclophosphamide-induced premature ovarian insufficiency in mice by reducing mitochondrial oxidative stress and pyroptosis in granulosa cells
Researchers found that quercetin, a natural plant compound, protected mouse ovaries from chemotherapy-induced damage by reducing harmful oxidative stress in mitochondria and suppressing a form of inflammatory cell death called pyroptosis, suggesting it could help preserve fertility in patients undergoing cancer treatment.
Potential threats of environmental microplastics to the skeletal system: current insights and future directions
This review summarizes emerging evidence that micro- and nanoplastics may reach the skeletal system through the bloodstream and accumulate in bone tissue. Researchers highlight potential effects on bone-forming and bone-resorbing cells, which could disrupt normal bone maintenance. The study calls attention to an underexplored area of microplastic health research and outlines directions for future investigation.
Effects of microplastics on the bones: a comprehensive review
This comprehensive review examines the growing evidence that micro- and nanoplastics can affect bone health, with researchers recently detecting plastic particles in human bone tissue for the first time. Lab studies show that microplastics can trigger inflammation, increase bone-resorbing cell activity, impair bone-forming cells, and weaken bone structure in animal models. While direct links to human bone conditions like osteoporosis have not yet been confirmed, the accumulating evidence suggests that microplastic exposure may represent a new risk factor for skeletal health.
Exposure to microplastics leads to a defective ovarian function and change in cytoskeleton protein expression in rat
Researchers exposed female rats to polystyrene microplastics over multiple reproductive cycles and found, for the first time, that the particles accumulated in different parts of the ovarian tissue. The microplastics reduced ovarian weight, disrupted the normal development of egg follicles, altered the reproductive cycle, and lowered estrogen levels. The study suggests these effects are driven by oxidative stress and changes in key structural proteins within the ovary.
Bioaccumulation of microplastics and its in vivo interactions with trace metals in edible oysters
Scientists collected oysters from a Chinese coastal city and found microplastics in all samples, then investigated how microplastics interact with trace metals in vivo, finding that plastic particles and metals co-accumulated in tissues and that plastics may alter metal bioavailability.
Effects of polystyrene nanoplastics on the female reproductive system in mice: Implications for ovarian function and follicular development
Researchers exposed female mice to polystyrene nanoplastics orally for 29 days and examined the effects on their reproductive systems. They found that nanoplastic exposure disrupted estrous cycles, impaired follicle development, and altered hormone levels in a dose-dependent manner. The study suggests that nanoplastics, due to their extremely small size, may cross biological barriers and accumulate in reproductive tissues, raising concerns about potential effects on fertility.
Polystyrene microplastics arrest skeletal growth in puberty through accelerating osteoblast senescence
Researchers found that polystyrene microplastics accumulated in the bones of mice during puberty, leading to reduced body and bone length and impaired bone structure. The microplastics accelerated premature aging (senescence) of bone-building cells called osteoblasts, suppressing their ability to form new bone. The study suggests that microplastic exposure during critical growth periods may pose a risk to skeletal development.
Effects of Low Molecular Weight Peptides from Red Shrimp (Solenocera crassicornis) Head on Immune Response in Immunosuppressed Mice
This paper is not about microplastics; it investigates how peptides extracted from red shrimp heads can enhance immune function in immunosuppressed mice, relevant to functional food research.
Polystyrene microplastics induces senescence of osteocytes by activating the cyclooxygenase-2 signaling pathway
Researchers found that polystyrene microplastics can be taken up by osteocytes, the most abundant cells in bone tissue, and cause them to undergo premature aging through a process called senescence. The microplastics triggered oxidative stress and activated a specific inflammatory signaling pathway involving cyclooxygenase-2. The study suggests that microplastic exposure could potentially impair bone health by disrupting the normal function of the cells responsible for maintaining bone tissue.
Nanoplastic impact on bone microenvironment: A snapshot from murine bone cells.
Researchers investigated how nanoplastics affect the bone microenvironment using murine bone cell models, examining effects on osteoblast and osteoclast activity that regulate bone formation and resorption. Nanoplastic exposure disrupted bone cell function, raising concerns about skeletal health impacts from daily plastic particle exposure.
Bioinspired Mechanical Materials—Development of High-Toughness Ceramics through Complexation of Calcium Phosphate and Organic Polymers
This review describes how researchers are developing tough ceramic materials inspired by bone structure by combining calcium phosphate with organic polymers like cellulose and starch. The resulting bio-based composite materials mimic the nanoscale organic-inorganic structure of bone, which dissipates mechanical energy to prevent fracture.
Glycine alleviates ovarian granulosa cell ferroptosis induced by ERα-mediated internalization of polystyrene microplastics
Researchers found that polystyrene microplastic exposure in mice triggers ferroptosis (iron-mediated cell death) in ovarian granulosa cells via ERα-mediated internalization and YAP1-ACSL4 signaling, and demonstrated that the amino acid glycine can restore iron homeostasis and alleviate this reproductive toxicity.
Allantoin Derived From Dioscorea opposita Thunb Ameliorates Cyclophosphamide-Induced Premature Ovarian Failure in Female Rats by Attenuating Apoptosis, Autophagy and Pyroptosis
Researchers studied whether allantoin, a compound from a Chinese yam species, could protect female rats from ovarian damage caused by the chemotherapy drug cyclophosphamide. They found that allantoin treatment reduced ovarian cell death through multiple protective pathways and helped preserve ovarian function. While this study does not involve microplastics, it contributes to understanding how natural compounds may help protect reproductive health from toxic chemical exposures.
Short Depuration of Oysters Intended for Human Consumption Is Effective at Reducing Exposure to Nanoplastics
Researchers exposed oysters to palladium-doped polystyrene nanoplastics and tracked their uptake and clearance over time. They found that the digestive gland accumulated the most nanoplastics, but nearly complete clearance occurred after 30 days of depuration. The study suggests that a short post-harvest depuration period of 24 to 48 hours could potentially reduce nanoplastic content in oysters intended for human consumption by up to 75 percent.
Environmental and Sublethal Concentrations of Polystyrene Nanoplastics Induced Antioxidant System, Transcriptomic Responses, and Disturbed Gut Microbiota in Oyster Magallana Hongkongensis
Researchers exposed Hong Kong oysters to polystyrene nanoplastics at both environmentally realistic and higher concentrations. Even at the lower, real-world concentrations, the nanoplastics significantly altered the oysters' gut bacteria and gene expression patterns, while higher doses also triggered immune and antioxidant stress responses, raising concerns about food safety and ecosystem health.