Nonunion of osteoporotic vertebral fractures (OVF), predominantly affecting the elderly, can lead to intractable pain, vertebral collapse, progressive kyphotic deformity, and neurological impairment, significantly compromising patients′ quality of life. There exists considerable debate on diagnosis and management of OVF, encompassing key issues such as clinical diagnosis and staging criteria for nonunion, surgical indications and procedure selection, and postoperative rehabilitation planning. Currently, there lacks standardized clinical guideline and expert consensus on the diagnosis and management of OVF nonunion in China. To address this gap, Minimally Invasive Surgery Group of Chinese Orthopedic Association, Osteoporosis Committee of Chinese Association of Orthopedic Surgeons, Prevention and Rehabilitation Committee for Osteoporosis of Chinese Association of Rehabilitation Medicine and Minimally Invasive Orthopedic Surgery Branch of China Association for Geriatric Care jointly organized domestic experts in spinal surgery, endocrinology, and rehabilitation to formulate the Clinical guideline for the diagnosis and treatment for nonunion of osteoporotic vertebral fractures ( version 2025), based on existing literature and clinical experience and adhering to principles of scientific rigor and practicality. The guideline provided 13 evidence-based recommendations encompassing diagnosis and treatment of OVF nonunion, aiming to standardize its clinical management.

Objective:To analyze the mechanism of HOX transcript anti-sense RNA(HOTAIR)promoting invasion and metastasis of gastric cancer from the perspective of its structural domains.Methods:The clinical data of 60 patients with gastric cancer were collected at the Tianjin Medical University Cancer Institute&Hospital from December 2010 to December 2012.Mutants of HOTAIR 3'and 5'domains were constructed as HOT△P and HOT△L,respectively,and the invasion and metastasis of gastric cancer cells were detected using Transwell as-say.Western blot was used to detect epithelial-mesenchymal transition(EMT)-related protein expression;RNAseq was used to analyze the differential genes between the NC and the HOT△L group.RNA was extracted from the clinical tissues for analyzing the correlation between gene expression and clinical information.Results:HOT△L promoted the invasive and metastatic ability of gastric cancer cells more visibly than HOT△P.The mechanistic studies demonstrated that HOT△L more significantly promotes the EMT process in gastric cancer cells com-pared to HOT△P.HOT△L specifically up-regulated the expression of glycine amidinotransferase(GATM).Data analysis and clinical analysis suggested that the high expression of both HOTAIR and GATM group was associated with distal metastasis in gastric cancer patients(P=0.02),which further proved that the high expression of HOTAIR and GATM predicted the poor prognosis of gastric cancer.Molecular in-vestigations suggested that GATM could promote the invasion and metastasis of gastric cancer cells by advancing the progression of EMT.Regulation of EMT by GATM is the key mechanism by which HOT△L promotes the invasive and metastatic ability of gastric cancer,as de-termined by back-complementary experiments.Conclusions:HOTAIR 5'domain regulates the EMT process through specific up-regulation of GATM,thus,promoting the invasion and metastasis of gastric cancer.

Objective:To analyze the mechanism of HOX transcript anti-sense RNA(HOTAIR)promoting invasion and metastasis of gastric cancer from the perspective of its structural domains.Methods:The clinical data of 60 patients with gastric cancer were collected at the Tianjin Medical University Cancer Institute&Hospital from December 2010 to December 2012.Mutants of HOTAIR 3'and 5'domains were constructed as HOT△P and HOT△L,respectively,and the invasion and metastasis of gastric cancer cells were detected using Transwell as-say.Western blot was used to detect epithelial-mesenchymal transition(EMT)-related protein expression;RNAseq was used to analyze the differential genes between the NC and the HOT△L group.RNA was extracted from the clinical tissues for analyzing the correlation between gene expression and clinical information.Results:HOT△L promoted the invasive and metastatic ability of gastric cancer cells more visibly than HOT△P.The mechanistic studies demonstrated that HOT△L more significantly promotes the EMT process in gastric cancer cells com-pared to HOT△P.HOT△L specifically up-regulated the expression of glycine amidinotransferase(GATM).Data analysis and clinical analysis suggested that the high expression of both HOTAIR and GATM group was associated with distal metastasis in gastric cancer patients(P=0.02),which further proved that the high expression of HOTAIR and GATM predicted the poor prognosis of gastric cancer.Molecular in-vestigations suggested that GATM could promote the invasion and metastasis of gastric cancer cells by advancing the progression of EMT.Regulation of EMT by GATM is the key mechanism by which HOT△L promotes the invasive and metastatic ability of gastric cancer,as de-termined by back-complementary experiments.Conclusions:HOTAIR 5'domain regulates the EMT process through specific up-regulation of GATM,thus,promoting the invasion and metastasis of gastric cancer.

Nonunion of osteoporotic vertebral fractures (OVF), predominantly affecting the elderly, can lead to intractable pain, vertebral collapse, progressive kyphotic deformity, and neurological impairment, significantly compromising patients′ quality of life. There exists considerable debate on diagnosis and management of OVF, encompassing key issues such as clinical diagnosis and staging criteria for nonunion, surgical indications and procedure selection, and postoperative rehabilitation planning. Currently, there lacks standardized clinical guideline and expert consensus on the diagnosis and management of OVF nonunion in China. To address this gap, Minimally Invasive Surgery Group of Chinese Orthopedic Association, Osteoporosis Committee of Chinese Association of Orthopedic Surgeons, Prevention and Rehabilitation Committee for Osteoporosis of Chinese Association of Rehabilitation Medicine and Minimally Invasive Orthopedic Surgery Branch of China Association for Geriatric Care jointly organized domestic experts in spinal surgery, endocrinology, and rehabilitation to formulate the Clinical guideline for the diagnosis and treatment for nonunion of osteoporotic vertebral fractures ( version 2025), based on existing literature and clinical experience and adhering to principles of scientific rigor and practicality. The guideline provided 13 evidence-based recommendations encompassing diagnosis and treatment of OVF nonunion, aiming to standardize its clinical management.

Objective To investigate the role and mechanism of SR8278,a synthetic antagonist of nuclear receptor subfamily 1 group D member 1(NR1D1),in alleviating the structural and functional impairment of the extraorbital lacrimal glands induced by jet lag in mice.Methods Totally 36 healthy wild C57BL/6J mice aged 8-10 weeks were randomly divid-ed into 3 groups(normal group,jet-lag group,and jet-lag+SR8278 group)after adapting to a circadian rhythm chamber under the 12 h light/12 h dark(12 h/12 h LD)cycle for 2 weeks,with 12 mice in each group.Mice in the normal group were fed in a circadian rhythm chamber in a 12 h LD cycle,mice in the jet-lag group were fed in a 12 h/12 h LD cycle with an 8-hour advanced LD schedule,and mice in the jet lag+SR8278 group were fed in a 12 h/12 h LD cycle with an 8-hour advanced LD schedule and received 25 mg·kg-1 SR8278.At the end of 5 days of intervention,locomotor activity,core body temperature and tear secretion of mice in each group were collected,and the weight of lacrimal gland tissues and size of lacrimal gland cells were measured.Immunohistochemical methods were used for histological evaluation of the extraor-bital lacrimal glands in mice.Lacrimal ribonucleic acid(RNA)was extracted for high-throughput RNA-sequencing analysis containing NR1D1,and the obtained transcriptomic data were used for KEGG and GO functional enrichment analysis.Re-sults Compared with the normal group,the jet-lag group had higher daytime activity,lower nighttime activity,higher daytime core body temperature,and lower nighttime core body temperature,with statistically significant differences(all P＜0.05).Compared with the jet-lag group,the jet-lag+SR8278 group had lower daytime activity,higher nighttime activi-ty,lower daytime core body temperature,and higher nighttime core body temperature,with statistically significant differ-ences(all P＜0.05).Compared with the normal group,the jet-lag group showed a decrease in lacrimal gland weight and tear secretion and an increase in size of lacrimal gland cells,with statistical significance(all P＜0.05);compared with the jet-lag group,the jet-lag+SR8278 group had an increase in lacrimal gland weight and tear secretion and a decrease in size of lacrimal gland cells,with statistical significance(all P＜0.05).Compared with the normal group,the jet-lag group showed a higher expression of NR1D1 in the lacrimal gland at night;compared with the jet-lag group,the jet-lag+SR8278 group showed a lower expression of NR1 D1 in the lacrimal gland at night(both P＜0.05).Bioinformatics analysis showed 947 significantly different genes in the jet-lag group and the jet-lag+SR8278 group,of which 43 are significantly upregulated genes,and 904 are significantly downregulated genes.The Notch signaling pathway has the most significant difference.Conclusion SR8278 effectively enhances the tear secretion function of jet-lagged mice by targeting NR1D1 inhibition.This process may be completed through the Notch signaling pathway.

Spinal surgical site infection (SSI), especially deep SSI after internal fixation is difficult in treatment, with long course of disease and poor prognosis. At present, there are many controversies in the diagnosis and treatment of spinal SSI, with unsatisfactory overall efficacy of its diagnosis and treatment. Besides, no diagnosis and treatment guideline based on evidence-based medicine has been in existence. To this end, the Spinal Infection Group of the Orthopedic Branch of the Chinese Medical Doctor Association and the Spinal Infection Group of the Spinal Surgery Branch of the Chinese Rehabilitation Medicine Association jointly organized relevant experts to formulate Evidence-based clinical guideline for the diagnosis and treatment of surgical site infection in spinal trauma ( version 2024) based on an evidence-based approach. A total of 10 recommendations were proposed on the diagnosis and treatment of spinal SSI, so as to provide a clinical reference for the diagnosis and treatment of spinal SSI.

Stress damages the function and structure of the brain and then becomes one of the risk factors for many psychiatric disorders. Nectins were recently discovered as cell adhesion molecules mediating many types of intercellular connections, especially synaptic connections between neurons, and thus involved in various physiological and pathological processes. Based on preclinical studies, the paper reviews the role of nectins in stress-induced functional and structural disorders of the central nervous system and the possible mechanisms involved.

Spinal surgical site infection (SSI), especially deep SSI after internal fixation is difficult in treatment, with long course of disease and poor prognosis. At present, there are many controversies in the diagnosis and treatment of spinal SSI, with unsatisfactory overall efficacy of its diagnosis and treatment. Besides, no diagnosis and treatment guideline based on evidence-based medicine has been in existence. To this end, the Spinal Infection Group of the Orthopedic Branch of the Chinese Medical Doctor Association and the Spinal Infection Group of the Spinal Surgery Branch of the Chinese Rehabilitation Medicine Association jointly organized relevant experts to formulate Evidence-based clinical guideline for the diagnosis and treatment of surgical site infection in spinal trauma ( version 2024) based on an evidence-based approach. A total of 10 recommendations were proposed on the diagnosis and treatment of spinal SSI, so as to provide a clinical reference for the diagnosis and treatment of spinal SSI.

Stress damages the function and structure of the brain and then becomes one of the risk factors for many psychiatric disorders. Nectins were recently discovered as cell adhesion molecules mediating many types of intercellular connections, especially synaptic connections between neurons, and thus involved in various physiological and pathological processes. Based on preclinical studies, the paper reviews the role of nectins in stress-induced functional and structural disorders of the central nervous system and the possible mechanisms involved.