1.Expert Consensus on Neurocritical Care Monitoring and Management in Beijing and Tibet(2025)
Drolma PHURBU ; Wenjin CHEN ; Heng ZHANG ; Jian ZHANG ; Xiaomeng WANG ; Guoying LIN ; Wenjun PAN ; Xiying GUI ; Xin CAI ; Chodron TENZIN ; Jianlei FU ; Qianwei LI ; TSEYANG ; Yijun LIU ; Bo LIU ; Tsering DROLMA ; Yudron SONAM ; KYILV ; Samdrup TSERING ; Wa DA ; Juan GUO ; Cheng QIU ; Huan CHEN ; Xiaoting WANG ; Yangong CHAO ; Dawei LIU ; Wenzhao CHAI ; Chenggong HU ; Wanhong YIN ; Shihong ZHU
Medical Journal of Peking Union Medical College Hospital 2026;17(1):59-72
Neurocritical care involves complex pathophysiological mechanisms, and its incidence is higher, injuries are more severe, and treatment is more challenging in high-altitude environments. This consensus, based on the latest domestic and international evidence-based medical data, establishes a standardized, goal-oriented framework for neurocritical care management applicable in high-altitude regions and nationwide. The consensus was developed following international standards for evidence quality assessment and underwent two rounds of Delphi expert consultation, resulting in 32 recommendation statements covering three parts: management systems, monitoring and assessment, and core strategies. Key updates include: advocating for the establishment of independent neurocritical care units and implementing precise tiered diagnosis and treatment based on the "Five Differences in Critical Care" concept; constructing a "trinity" multimodal brain monitoring system centered on cerebral blood flow, cerebral oxygenation, and brain function, emphasizing routine bedside transcranial Doppler ultrasound, cerebral oximetry, and continuous electroencephalography monitoring; shifting management strategies from mild hypothermia therapy to targeted temperature management, and defining the "446" target management pathway for the supercritical stage; emphasizing the assessment of static and dynamic cerebrovascular autoregulation functions through multimodal methods to achieve individualized optimal mean arterial pressure management; elevating cerebrospinal fluid management goals to the level of "glymphatic system" function maintenance; implementing a multidisciplinary collaborative, whole-process management model focusing on patients' long-term neurological functional outcomes; de-escalation criteria include multidimensional indicators such as recovery of brain structure, restoration of cerebrovascular autoregulation, improvement in cerebrospinal fluid dynamics, and reduction in biomarker levels; and integrating cutting-edge technologies like artificial intelligence into post-critical care management and rehabilitation planning. This consensus systematically integrates the entire process of neurocritical care management, reflecting the modern connotation of goal-oriented, dynamic, and multimodal integration in neurocritical care medicine. It aims to adapt to new trends such as deepening understanding of pathophysiological mechanisms, the integration of medicine and engineering, and the empowerment of artificial intelligence, thereby further advancing the discipline of critical care medicine.
2.Evaluation of the public health governance capacity in Jiangsu Province
Peiyu FENG ; Anning MA ; Peiwu SHI ; Qunhong SHEN ; Chaoyang ZHANG ; Zheng CHEN ; Chuan PU ; Lingzhong XU ; Zhaohui GONG ; Tianqiang XU ; Panshi WANG ; Chao HAO ; Zhi HU ; Mo HAO ; Hua WANG ; Chengyue LI
Shanghai Journal of Preventive Medicine 2026;38(2):146-152
ObjectiveTo evaluate the public health governance capacity in Jiangsu Province and provide an optimized pathway for the construction of a “strong, rich, beautiful, and high-quality” new Jiangsu. MethodsA total of 806 policy documents, 658 public information reports, and 148 research literatures related to public health governance capacity in Jiangsu Province from January 1995 to December 2023 were collected. The status of current public health goverance was assessed based on the evaluation criteria suitable for public health systems, and the strengths and the weaknesses of the system were identified. ResultsThe public health governance capability of Jiangsu Province was scored at 738.3 points, ranking 3rd nationally. Maternal health care and emergency response capacities achieved leading positions nationwide, both ranking 2nd. Jiangsu had exhibited a standardized guidance in the strategic level, a well-established management mechanism, an extensive coverage in information collection, and a scientifically established health targets setting. However, bottlenecks remained, including an unclear division of responsibilities across organizational departments, an insufficient public-health workforce, the absence of a stable growth mechanism for government funding investment, and difficulties in promptly identifying public needs. ConclusionJiangsu’s public-health system demonstrates leading nationally, yet several components remain underdeveloped. Future efforts should consolidate advantages while addressing weaknesses, further diversify content and forms, establish a stable funding increase mechanism, and clarify departmental functions, thereby providing solid health support for realizing the developmental goals of a “strong, rich, beautiful and high-quality” new Jiangsu.
3.Evaluation of public health governance capacity in Zhejiang Province
Haiyan LI ; Ting CHEN ; Chengyue LI ; Huihui HUANGFU ; Wei WANG ; Qunhong SHEN ; Chaoyang ZHANG ; Zheng CHEN ; Chuan PU ; Lingzhong XU ; Anning MA ; Zhaohui GONG ; Tianqiang XU ; Panshi WANG ; Hua WANG ; Chao HAO ; Zhi HU ; Peiwu SHI ; Mo HAO
Shanghai Journal of Preventive Medicine 2026;38(2):153-158
ObjectiveTo systematically assess the public health governance capacity in Zhejiang Province, to conduct an in-depth analysis of its strengths and weaknesses, so as to provide scientific basis and strategic recommendations for further enhancement. MethodsA systematic collection of policy documents, public information reports, and research literature related to public health governance capacity in Zhejiang Province from 2002 to 2023 was conducted (encompassing a total of 1 263 policy documents, 138 pieces of information reports and 631 research articles). Based on the evaluation criteria suitable for public health systems previously developed by the research team, the basic status and magnitude of change in public health governance capacity in Zhejiang Province was evaluated. Additionally, normative gap analyses were employed to identify the strengths and weaknesses. ResultsZhejiang Province ranked 4th nationwide in terms of public health governance capacity with a score of 733.4 points (1 000.0-point maximum). The province has effectively implemented the principle of health first (scoring 698.5 points in the assessment of health-first strategy implementation) and attached sufficient importance to health-related goals (scoring 658.2 points in the scientific rationality of goal setting). However, the implementation of inter-departmental coordination and incentive mechanisms only scored 178.7 points, the feasibility of management and monitoring mechanisms scored even lower at only 144.0 points, and the coverage of incentive mechanisms scored 286.0 points. ConclusionZhejiang Province has effectively implemented its health first strategy and attached great importance to health targets, but still needs to strengthen cross-departmental coordination mechanisms and health-oriented incentives.
4.Exploring Mechanism of Chaihu Jia Longgu Mulitang in Depressive-like Rats via AMPK/SIRT1/NF-κB/NLRP3 Signaling Pathway
Guang WANG ; Xinhua SONG ; Jie YANG ; Jinyao XU ; Junhua MEI ; Chao CHEN ; Guohua CHEN
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(11):144-152
ObjectiveTo investigate the effects of Chaihu Jia Longgu Mulitang(CJLM) on depression-like behaviors and neuroinflammation in rats subjected to social isolation combined with chronic unpredictable mild stress(CUMS), and to explore the potential underlying mechanisms. MethodsSixty male SD rats were randomly divided into a normal group, a model group, and low-, medium-, and high-dose CJLM groups(2.89, 5.78, 11.56 g·kg-1), as well as a fluoxetine group(10 mg·kg-1). Except for the normal group, all other groups were subjected to social isolation combined with CUMS for 63 d. During the first 35 d, depression models were established only, and from day 36 onward, modeling and drug administration were conducted simultaneously for a total intervention period of 28 d. Depression-like behaviors were evaluated using the sucrose preference test, open-field test, and forced swimming test. Hematoxylin-eosin(HE) staining was performed to observe hippocampal histomorphology. Immunohistochemistry(IHC) was used to detect the expression levels of ionized calcium-binding adapter molecule 1(Iba1) and gasdermin D(GSDMD) proteins in the hippocampus. Western blot analysis was employed to determine the protein expression levels of adenosine 5′-monophosphate(AMP)-activated protein kinase(AMPK) and phosphorylated(p)-AMPK, silent information regulator 1(SIRT1), nuclear factor-κB(NF-κB) and p-NF-κB, NOD-like receptor protein 3(NLRP3), and Caspase-1 in the hippocampus. Real-time quantitative polymerase chain reaction(Real-time PCR) was used to detect the mRNA expression levels of tumor necrosis factor-α(TNF-α), interleukin(IL)-6, and IL-1β in the hippocampus. ResultsCompared with the normal group, the model group showed a decreased sucrose preference rate(P<0.01), reduced total movement distance(P<0.01), prolonged immobility time(P<0.01), and decreased central zone residence time(P<0.01) in the open-field test, and increased immobility time in the forced swimming test(P<0.01). Hippocampal neuronal structure was damaged. The contents of Iba1 and GSDMD in the hippocampus were significantly increased(P<0.01). The protein expression levels of p-AMPK and SIRT1 in the hippocampus were significantly decreased(P<0.01), whereas the protein expression levels of p-NF-κB, NLRP3, and Caspase-1 were significantly increased(P<0.01). The mRNA expression levels of IL-1β, IL-6, and TNF-α in the hippocampus were significantly upregulated(P<0.01). Compared with the model group, the low-, medium-, and high-dose CJLM groups and the fluoxetine group all were able to reverse depression-like behavioral changes, as evidenced by increased sucrose preference rate, increased total movement distance with shortened immobility time in the open-field test, prolonged central zone residence time, and reduced immobility time in the forced swimming test(P<0.05, P<0.01). Meanwhile, hippocampal neuronal structural damage was alleviated. In the hippocampus, the expression levels of Iba1 and GSDMD were downregulated, the expression levels of p-AMPK and SIRT1 were upregulated, and the abnormal elevations of p-NF-κB, NLRP3, Caspase-1, as well as IL-1β, IL-6, and TNF-α mRNA were suppressed(P<0.05, P<0.01). ConclusionCJLM can ameliorate depression-like behaviors in rats subjected to social isolation combined with CUMS and attenuate hippocampal neuroinflammation and pyroptosis, suggesting that its effects may be associated with the regulation of AMPK/SIRT1/NF-κB/NLRP3 signaling pathway.
5.Effect Analysis of Different Interventions to Improve Neuroinflammation in The Treatment of Alzheimer’s Disease
Jiang-Hui SHAN ; Chao-Yang CHU ; Shi-Yu CHEN ; Zhi-Cheng LIN ; Yu-Yu ZHOU ; Tian-Yuan FANG ; Chu-Xia ZHANG ; Biao XIAO ; Kai XIE ; Qing-Juan WANG ; Zhi-Tao LIU ; Li-Ping LI
Progress in Biochemistry and Biophysics 2025;52(2):310-333
Alzheimer’s disease (AD) is a central neurodegenerative disease characterized by progressive cognitive decline and memory impairment in clinical. Currently, there are no effective treatments for AD. In recent years, a variety of therapeutic approaches from different perspectives have been explored to treat AD. Although the drug therapies targeted at the clearance of amyloid β-protein (Aβ) had made a breakthrough in clinical trials, there were associated with adverse events. Neuroinflammation plays a crucial role in the onset and progression of AD. Continuous neuroinflammatory was considered to be the third major pathological feature of AD, which could promote the formation of extracellular amyloid plaques and intracellular neurofibrillary tangles. At the same time, these toxic substances could accelerate the development of neuroinflammation, form a vicious cycle, and exacerbate disease progression. Reducing neuroinflammation could break the feedback loop pattern between neuroinflammation, Aβ plaque deposition and Tau tangles, which might be an effective therapeutic strategy for treating AD. Traditional Chinese herbs such as Polygonum multiflorum and Curcuma were utilized in the treatment of AD due to their ability to mitigate neuroinflammation. Non-steroidal anti-inflammatory drugs such as ibuprofen and indomethacin had been shown to reduce the level of inflammasomes in the body, and taking these drugs was associated with a low incidence of AD. Biosynthetic nanomaterials loaded with oxytocin were demonstrated to have the capability to anti-inflammatory and penetrate the blood-brain barrier effectively, and they played an anti-inflammatory role via sustained-releasing oxytocin in the brain. Transplantation of mesenchymal stem cells could reduce neuroinflammation and inhibit the activation of microglia. The secretion of mesenchymal stem cells could not only improve neuroinflammation, but also exert a multi-target comprehensive therapeutic effect, making it potentially more suitable for the treatment of AD. Enhancing the level of TREM2 in microglial cells using gene editing technologies, or application of TREM2 antibodies such as Ab-T1, hT2AB could improve microglial cell function and reduce the level of neuroinflammation, which might be a potential treatment for AD. Probiotic therapy, fecal flora transplantation, antibiotic therapy, and dietary intervention could reshape the composition of the gut microbiota and alleviate neuroinflammation through the gut-brain axis. However, the drugs of sodium oligomannose remain controversial. Both exercise intervention and electromagnetic intervention had the potential to attenuate neuroinflammation, thereby delaying AD process. This article focuses on the role of drug therapy, gene therapy, stem cell therapy, gut microbiota therapy, exercise intervention, and brain stimulation in improving neuroinflammation in recent years, aiming to provide a novel insight for the treatment of AD by intervening neuroinflammation in the future.
6.Construction of glioma microfluidic chip model and its application research on evaluation the medicinal efficacy of the Chinese medicine Scutellaria barbata
Piaoxue YOU ; Lan CHEN ; Yiwei SHI ; Hui WANG ; Liang CHAO ; Zhanying HONG
Journal of Pharmaceutical Practice and Service 2025;43(2):59-66
Objective To construct a glioma microfluidic chip model to simulate tumor microenvironment for evaluating the medicinal efficacy of anti-glioma traditional Chinese medicines. Methods Glioblastoma cells U251 were seeded into microfluidic chips with different culture modes, and the cell viability and tumour microenvironment within the constructed model were characterized. Fluorescence staining was used to evaluate the effects of the positive drugs temozolomide (TMZ) and docetaxel (DOC) on the cell activity and apoptosis within the model, which was applied to evaluate the medicinal efficacy of the extracts of the herb Scutellaria barbata on gliomas. Results The cells in the constructed U251 microfluidic chip model displayed high viability and were able to mimic the hypoxic microenvironment of tumor to a certain extent. The viability of the U251 cells in the microfluidic chips decreased with the increasing of the concentration of the positive drug, and the viability of the 3D cultured U251 cells was higher than that in the 2D condition (P<0.05). The intracellular mitochondrial membrane potential decreased with the increasing of the concentration of the positive drug. And the 2 mg/ml Scutellaria barbata extract killed U251 cells to a certain extent and reduced the mitochondrial membrane potential of the cells in the model. Conclusion This study successfully constructed a microfluidic chip model of glioma that could effectively simulate the tumor microenvironment and rapidly evaluate the anti-tumor medicinal efficacy, which provided a new strategy for the medicinal efficacy evaluation and active components screening of anti-glioma traditional Chinese medicines.
7.Connotation and Prevention Strategies of Traditional Chinese Medicine for Panvascular Diseases
Jie WANG ; Jun LI ; Yan DONG ; Cong CHEN ; Yongmei LIU ; Chao LIU ; Lanchun LIU ; Xuan SUN
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(7):1-14
Panvascular disease, with vascular diseases as the common pathological feature, is mainly manifested as atherosclerosis. Panvascular disease mainly affects the important organs of the heart, brain, kidney, and limbs. It is one of the leading causes of death for Chinese residents at present. Previously, due to the narrow branches of disciplines, too much attention was paid to local lesions, resulting in the neglect of panvascular disease as a systemic one. The fact that panvascular disease has overall pathology and comprehensive and individualized treatment strategies, makes the disease highly compatible with the principles of holism concept and syndrome differentiation and treatment in traditional Chinese medicine (TCM). It is believed that blood stasis is the core pathogenesis of atherosclerosis and is involved in the whole process of atherosclerosis. The theories of ''blood vessel'', ''meridians'', ''visceral manifestation'', and ''organs-meridians'' in TCM are helpful to comprehensively understand the complexity of panvascular diseases. Moreover, those theories can provide systematic treatment strategies. The TCM syndromes of panvascular diseases evolve from ''phlegm, stasis, stagnation, and deficiency''. Panvascular arteriosclerosis is related to the syndrome of ''stasis and phlegm'', and the treatment mainly promotes blood circulation and removes phlegm. There are different specific drugs and mechanisms of action for coronary atherosclerosis, cerebral atherosclerosis, and renal artery atherosclerotic stenosis. Panvascular venous lesions are related to the syndrome of ''deficiency and stasis'' in TCM, and the TCM treatment mainly invigorates Qi and promotes blood circulation, which can inhibit venous thrombosis, improve venous ulcers, and resist venous endothelial damage. Panvascular microcirculatory lesions are inseparable from the ''stagnation and stasis'' in TCM, and the treatment mainly promotes Qi and dredges collaterals, which has a good effect on coronary microvascular lesions, diabetic microvascular lesions, pulmonary microvascular lesions, and pancreatic microvascular lesions. Panvascular lymphatic lesions are related to the syndrome of ''water and stasis'' in TCM. The treatment method focuses on promoting blood circulation and water excretion, which can promote lymphangiogenesis and enhance lymphatic reflux. In addition, the combination of TCM and modern technology, especially the application of artificial intelligence, can improve the efficiency of early identification and personalized treatment, resulting in early screening and comprehensive management of panvascular diseases. Therefore, TCM will play a vital role in the prevention and treatment of panvascular diseases.
8.Connotation and Prevention Strategies of Traditional Chinese Medicine for Panvascular Diseases
Jie WANG ; Jun LI ; Yan DONG ; Cong CHEN ; Yongmei LIU ; Chao LIU ; Lanchun LIU ; Xuan SUN
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(7):1-14
Panvascular disease, with vascular diseases as the common pathological feature, is mainly manifested as atherosclerosis. Panvascular disease mainly affects the important organs of the heart, brain, kidney, and limbs. It is one of the leading causes of death for Chinese residents at present. Previously, due to the narrow branches of disciplines, too much attention was paid to local lesions, resulting in the neglect of panvascular disease as a systemic one. The fact that panvascular disease has overall pathology and comprehensive and individualized treatment strategies, makes the disease highly compatible with the principles of holism concept and syndrome differentiation and treatment in traditional Chinese medicine (TCM). It is believed that blood stasis is the core pathogenesis of atherosclerosis and is involved in the whole process of atherosclerosis. The theories of ''blood vessel'', ''meridians'', ''visceral manifestation'', and ''organs-meridians'' in TCM are helpful to comprehensively understand the complexity of panvascular diseases. Moreover, those theories can provide systematic treatment strategies. The TCM syndromes of panvascular diseases evolve from ''phlegm, stasis, stagnation, and deficiency''. Panvascular arteriosclerosis is related to the syndrome of ''stasis and phlegm'', and the treatment mainly promotes blood circulation and removes phlegm. There are different specific drugs and mechanisms of action for coronary atherosclerosis, cerebral atherosclerosis, and renal artery atherosclerotic stenosis. Panvascular venous lesions are related to the syndrome of ''deficiency and stasis'' in TCM, and the TCM treatment mainly invigorates Qi and promotes blood circulation, which can inhibit venous thrombosis, improve venous ulcers, and resist venous endothelial damage. Panvascular microcirculatory lesions are inseparable from the ''stagnation and stasis'' in TCM, and the treatment mainly promotes Qi and dredges collaterals, which has a good effect on coronary microvascular lesions, diabetic microvascular lesions, pulmonary microvascular lesions, and pancreatic microvascular lesions. Panvascular lymphatic lesions are related to the syndrome of ''water and stasis'' in TCM. The treatment method focuses on promoting blood circulation and water excretion, which can promote lymphangiogenesis and enhance lymphatic reflux. In addition, the combination of TCM and modern technology, especially the application of artificial intelligence, can improve the efficiency of early identification and personalized treatment, resulting in early screening and comprehensive management of panvascular diseases. Therefore, TCM will play a vital role in the prevention and treatment of panvascular diseases.
9.Two-dimensional black phosphorus materials for bone tissue engineering
Jiahan CHEN ; Chao FENG ; Xiaoxia HUANG ; Minghui NIU ; Xin WANG ; Yong TENG
Chinese Journal of Tissue Engineering Research 2025;29(10):2124-2131
BACKGROUND:Black phosphorus has a high degree of homology with human bone,so it has been extensively studied in the field of bone tissue engineering in recent years.Since 2014,two-dimensional black phosphorus materials have garned significant attention in the field of biomedicine due to their excellent exceptional physical,chemical,and biological properties. OBJECTIVE:To summarize the advancements made in black phosphorus-based nanomaterials for bone tissue engineering,focus on the synthesis methods,osteogenic characteristics,and applications in biomaterials pertaining to two-dimensional black phosphorus nanomaterials. METHODS:Chinese and English key words were"black phosphorus,bone tissue engineering,bone defect,bone regeneration,osteogenesis."Relevant articles in PubMed and CNKI databases from January 2014 to December 2023 were searched.After exclusion and screening,96 articles were analyzed. RESULTS AND CONCLUSION:Black phosphorus nanomaterials play an important role in bone tissue engineering due to their good biocompatibility,biodegradability,photothermal action,antibacterial ability,drug loading performance,and special osteogenic effect,and are ideal candidate materials for promoting bone regeneration.The preparation of black phosphorus nanomaterials is mainly a top-down top-layer stripping method.The main principle is to weaken the van der Waals force between the black phosphorus layers by physical or chemical means to obtain a single or less layer of phosphanse,that is,black phosphorus nanosheets or quantum dots.Black phosphate-based nanocomposites are mainly divided into hydrogels,3D printing scaffolds,composite scaffolds,electrospinning,bionic periosteum,microspheres,and bionic coatings.The research of nano-black phosphorus in bone tissue engineering is in its infancy,and still faces many challenges:the behavior of black phosphorus in vivo and the interaction mechanism with various biomolecules need to be further studied.The long-term potential toxicity of black phosphorus is unknown.The manufacturing process for black phosphorus is difficult to control.Therefore,how to develop uniform size,safe,reliable,and efficient nano black phosphorus and transform it into clinical application requires interdisciplinary research on modern biomedical technology,physicochemical technology,and precision manufacturing technology.
10.Effects of erythropoietin on restorative dentin formation and expression of bone morphogenetic protein 2 after pulp injury
Ruiqing CHENG ; Honglei SUN ; Shuangshuang GENG ; Chao WANG ; Junke LI ; Yanfang CHEN
Chinese Journal of Tissue Engineering Research 2025;29(11):2231-2242
BACKGROUND:Erythropoietin has anti-inflammatory,anti-apoptotic,and pro-bone defect repair effects.To date,fewer studies have been conducted on its effects and molecular mechanism underlying restorative dentin formation after pulp injury. OBJECTIVE:To explore the effect of erythropoietin on restorative dentin formation after pulp injury. METHODS:(1)Animal experiment:Thirty-two rats were randomly divided into control group(n=16)and experimental group(n=16).In the experimental group,collagen sponges containing erythropoietin were used to directly cap the pulp at the pulp injury,and in the control group,collagen sponges containing PBS were used to directly cap the pulp at the exposed pulp injury.The cavity was then closed with glass ionomer adhesive.After 2 and 4 weeks of treatment,the maxillary bones of the two groups were collected,and the expression of nestin in dentin was detected by immunohistochemistry,and the reparative dentin production was observed by hematoxylin-eosin staining.The maxillae of four Sprague-Dawley rats were taken for immunohistochemical detection of erythropoietin expression in molar and incisor teeth.(2)Cell experiment:Human dental pulp cells,human periodontal ligament cells and human gingival fibroblasts were obtained from human dental tissue,periodontal ligament,and gingival tissue.Real-time reverse transcription PCR(RT-PCR)was used to detect the mRNA expression of erythropoietin.Erythropoietin,dentin sialophosphoprotein,dentin matrix protein 1,and nestin mRNA levels in human pulp cells were detected by RT-PCR under induced or uninduced odontoblastic differentiation.After down-regulation of erythropoietin expression or exogenous administration of erythropoietin intervention under induced or uninduced differentiation odontoblastic differentiation,the relative mRNA expression of dentin sialophosphoprotein and dentin matrix protein 1 in human pulp cells was detected by RT-PCR,and the formation of mineralized nodules was detected by alizarin red S staining,and mRNA and protein expressions of bone morphogenetic protein 2 were detected by RT-PCR and western blot,respectively. RESULTS AND CONCLUSION:(1)Animal experiment:Compared with the control group,the restorative dentin production and nestin expression were higher in the experimental group after 2 and 4 weeks of treatment.The expression of erythropoietin was weakly positive in pulp,odontoblastic cell layer and periodontal membrane of the rat's first maxillary molar,and strongly positive in odontoblasts.(2)Cell experiment:The mRNA expression of erythropoietin was higher in human dental pulp cells than in the other two types of cells.The mRNA expressions of dentin sialophosphorin,dentin matrix protein 1,nestin,erythropoietin and bone morphogenetic protein 2 in human pulp cells increased and the formation of mineralized nodules during odontoblastic differentiation under induction compared with non-induction conditions.The mRNA expression of dentin sialophosphoprotein,dentin matrix protein 1,nestin,bone morphogenetic protein 2 and the formation of mineralized nodules were decreased in human pulp cells after downregulation of erythropoietin under induced odontoblastic differentiation,and the protein expression of bone morphogenetic protein 2 was also decreased.After exogenous erythropoietin intervention,the expression of the above indexes in human dental pulp cells increased.To conclude,erythropoietin can promote the formation of dentin to some extent.

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