Publications by authors named "Zhi-dong Zhao"

This study aimed to investigate the impact of spatiotemporal changes in land use on ecosystem carbon storage. The study analyzed the spatiotemporal changes in carbon storage in the study area based on land use data from five periods (1985, 1995, 2005, 2015, and 2020) using the InVEST model. The PLUS model was used to predict land use changes in the study area under four different scenarios (natural development, farmland protection, ecological protection, and double protection of farmland and ecology) in 2035, and the ecosystem carbon storage under different scenarios was estimated.

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Skeletal stem cells (SSC) have gained attentions as candidates for the treatment of osteoarthritis due to their osteochondrogenic capacity. However, the immunomodulatory properties of SSC, especially under delivery operations, have been largely ignored. In the study, we found that Pdpn and Grem1 SSC subpopulations owned immunoregulatory potential, and the single-cell RNA sequencing (scRNA-seq) data suggested that the mechanical activation of microgel carriers on SSC induced the generation of PdpnGrem1Ptgs2 SSC subpopulation, which was potent at suppressing macrophage inflammation.

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Recent investigations have shown that the necroptosis of tissue cells in joints is important in the development of osteoarthritis (OA). This study aimed to investigate the potential effects of exogenous skeletal stem cells (SSCs) on the necroptosis of subchondral osteoblasts in OA. Human SSCs and subchondral osteoblasts isolated from human tibia plateaus were used for Western blotting, real-time PCR, RNA sequencing, gene editing, and necroptosis detection assays.

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Article Synopsis
  • - The study investigates the potential of articular cartilage stem cells (ACSCs) in treating osteoarthritis (OA) by isolating these cells from diseased joints and evaluating their effects on joint health in rat models.
  • - ACSCs demonstrated significant stem cell-like properties and improved joint conditions in OA rats, notably reducing abnormal bone remodeling after injection into the knee joints.
  • - The results indicate that ACSCs inhibit the formation of osteoclasts (bone-resorbing cells) in the osteoarthritis context, mediated by specific proteins which contribute to joint healing and improved bone structure.
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Premature delivery is one of the direct factors that affect the early development and safety of infants. Its direct clinical manifestation is the change of uterine contraction intensity and frequency. Uterine Electrohysterography(EHG) signal collected from the abdomen of pregnant women can accurately and effectively reflect the uterine contraction, which has higher clinical application value than invasive monitoring technology such as intrauterine pressure catheter.

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Background: Repairing radiation-induced bone injuries remains a significant challenge in the clinic, and few effective medicines are currently available. Psoralen is a principal bioactive component of Cullen corylifolium (L.) Medik and has been reported to have antitumor, anti-inflammatory, and pro-osteogenesis activities.

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  • The study looked at how melatonin can help heal bones after they’ve been damaged by radiation exposure, which can make healing difficult.* -
  • Researchers took special stem cells from mice and treated them with melatonin after they were exposed to radiation to see if it could help them grow and repair better.* -
  • The results showed that melatonin helped the stem cells stay healthy and reduced damage caused by radiation, making it easier for the bones to heal.*
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Background: Although increasing evidence has demonstrated that human dental pulp stem cells (hDPSCs) are efficacious for the clinical treatment of skeletal disorders, the underlying mechanisms remain incompletely understood. Osteoarthritis (OA) is one of the most common degenerative disorders in joints and is characterized by gradual and irreversible cartilaginous tissue damage. Notably, immune factors were newly identified to be closely related to OA development.

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The reconstruction of irradiated bone defects after settlement of skeletal tumors remains a significant challenge in clinical applications. In this study, we explored radiation-induced skeletal stem cell (SSC) stemness impairments and rescuing effects of ferulic acid (FA) on SSCs in vitro and in vivo. The immunophenotype, cell renewal, cell proliferation, and differentiation of SSCs in vitro after irradiation were investigated.

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Background: Although increasing studies have demonstrated that chondrogenic progenitor cells (CPCs) remain present in human osteoarthritic cartilage, the biological alterations of the CPCs from the less diseased lateral tibial condyle and the more diseased medial condyle of same patient remain to be investigated.

Methods: CPCs were isolated from paired grade 1-2 and grade 3-4 osteoarthritic cartilage by virtue of cell migratory capacities. The cell morphology, immunophenotype, self-renewal, multi-differentiation, and cell migration of these CPCs were evaluated.

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Background: Knee osteoarthritis is the most prevalent form of osteoarthritis and is becoming the main reason for progressive pain in knee joints. Arthroscopy combined with unicondylar knee arthroplasty (UKA) is one of the effective methods for the treatment of severe unicompartmental knee arthritis. This surgical approach gives us the capacity to explore all the articular cavities and plays a vital role in UKA patient selection.

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Article Synopsis
  • The study explored how skeletal stem cells (SSCs) influence the formation of inflammatory osteoclasts and bone loss, revealing that certain proteins (ICAM-1, VCAM-1, and OPG) work together to suppress this process.
  • Using mouse models and human fluid samples, researchers found that SSCs significantly inhibited the development of osteoclasts both in living organisms and in lab settings.
  • The findings suggest that in inflammatory conditions, SSCs increase the expression of adhesion molecules and OPG, which helps prevent osteoclast formation and may protect against bone erosion during joint inflammation.
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Background: The potential benefit of arthroscopic surgery for osteoarthritic knee associated with medial meniscus tear is controversial. This study was conducted to determine the effect of pre-operative medial meniscus extrusion (MME) on arthroscopic surgery outcomes in the osteoarthritic knee associated with medial meniscus tear during a minimum 4-year follow-up.

Methods: This was a retrospective review of a total of 131 patients diagnosed with osteoarthritic knee associated with medial symptomatic degenerative meniscus tear who underwent arthroscopic surgery from January 2012 to December 2014 and were observed for more than 4 years.

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Background: To investigate the therapeutic effect of intercellular adhesion molecule (ICAM)-1-modified mesenchymal stem cells (MSCs) in a mouse model of inflammatory bowel disease (IBD) induced by dextran sulfate sodium.

Methods: Primary MSCs and ICAM-1-overexpressing MSCs (C3 cells) were generated in vitro. The IBD mouse model was induced with drinking water containing dextran sulfate sodium for 7 days.

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Article Synopsis
  • Surgical treatment options for recurrent lateral patellar dislocation include several techniques such as MPFL reconstruction, tibial tubercle osteotomy, and trochleoplasty.
  • Clinical reports indicate that both single and combined surgical methods can lead to successful short- to mid-term outcomes, though there is no standardized criteria for choosing the best approach for individual cases.
  • The article aims to review the current state of these surgical methods, highlight positive results, and provide guidance for tailoring patient-specific therapies to improve treatment effectiveness.
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This research was undertaken in order to characterize the chemical compositions and evaluate the antioxidant activities of essential oils obtained from different parts of the Origanum vulgare L. It is a medicinal plant used in traditional Chinese medicine for the treatment of heat stroke, fever, vomiting, acute gastroenteritis, and respiratory disorders. The chemical compositions of the three essential oils from different parts of the oregano (leaves-flowers, stems, and roots) were identified by gas chromatography-mass spectrometry (GC-MS).

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Bacterial drug resistance has been always the focus of the world. With the abuse of antibiotics and the emerging of "Superbug" in the world, the harm of drug resistance to human beings is more and more serious, with an uncontrollable trend. Today, with the relative lack of antibiotics, people pay more attention to Chinese herbal medicines with a wide range of sources, high security, less toxic side effects and mysterious anti-drug resistance mechanism, hoping to find new ways or new ideas to solve the problem of drug resistance.

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  • * ACSL1 plays a crucial role in fatty acid transport, degradation, and lipid synthesis and is highly expressed in bovine subcutaneous fat and muscle tissues.
  • * The study identified key transcription factors (E2F1, Sp1, KLF15, E2F4) that regulate ACSL1 expression by binding to its promoter region, highlighting its importance in determining beef's lipid composition.
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Osteopontin (OPN) is an integrin-binding protein, believed to be involved in a variety of physiological cellular functions. The physiology of OPN is best documented in the bone where this secreted adhesive glycoprotein appears to be involved in osteoblast differentiation and bone formation. In our study, we used semi-quantitative RT-PCR of osteopontin in calcification tissue of breast to detect breast cancer metastasis.

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The title compound, C(19)H(19)N(3)O(7)S·CH(3)OH, was synthesized from syringic acid and sulfamethoxazole. The benzene rings make a dihedral angle of 41.8 (1)° and the isoxazole ring is twisted by 74.

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Objective: To investigate the expression of cyclooxygenase-2(COX-2) and CEA in the tissues adjacent to the tumor within different distances.

Methods: A total of 42 colorectal cancer tissues were collected.The adjacent tissues within 3 cm to the tumor were procured every 1 cm.

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