1.Perioperative safety of thymectomy in myasthenia gravis patients with oral high-dose glucocorticoids
Jinjin YAN ; Dazhi PANG ; Jitian ZHANG ; Guangqiang SHAO ; Zhihai LIU ; Rutaiyang LIU
Chinese Journal of Clinical Thoracic and Cardiovascular Surgery 2026;33(04):565-569
Objective To investigate the perioperative safety of patients with myasthenia gravis who take high doses of oral glucocorticoids. Methods A retrospective analysis was conducted on the clinical data of patients with myasthenia gravis who received oral glucocorticoids and underwent thoracoscopic thymectomy at the Department of Thoracic Surgery, the University of Hong Kong-Shenzhen Hospital from April 2013 to October 2019. Patients were divided into a high-dose steroid group and a medium-to-low dose steroid group based on the dosage of oral steroids, and the clinical data of the two groups were compared. Results A total of 102 patients were included, including 19 (18.62%) males and 83 (81.37%) females, with an average age of (32.25±9.83) years. There were 75 patients in the medium-to-low dose steroid group and 27 patients in the high-dose steroid group. All patients in both groups successfully completed the surgery without major intraoperative bleeding, conversion to open chest surgery, delayed extubation, severe infection, or perioperative death. The daily oral steroid dose for the high-dose steroid group was (35.81±4.29) mg, and for the medium-to-low dose steroid group it was (15.29±2.17) mg. There was no statistical difference in the operation time [(124.69±23.51) min vs. (117.89±21.46) min, P=0.172] and intraoperative blood loss [(21.19±3.48) mL vs. (20.56±3.41) mL, P=0.419] between the two groups. Postoperatively, 12 (11.76%) patients developed complications: one patient of myasthenic crisis (the medium-to-low dose steroid group), which was improved after short-term respiratory support and intravenous immunoglobulin treatment; 11 patients of respiratory/swallowing difficulties (9 in the medium-to-low dose steroid group and 2 in the high-dose steroid group), which were improved after anticholinergic treatment to reduce oral secretions and sputum suction, and the patients were discharged smoothly. There was no statistical difference in the incidence of postoperative complications between the two groups (P=0.637). Conclusion On the basis of good perioperative management, it is safe and feasible for patients with myasthenia gravis who take high dose of oral steroids to undergo thymectomy, and they have the same perioperative safety as patients with medium-to-low dose steroids.
2.Study of medication characteristics of cancer-related fatigue in colorectal cancer based on data mining
Chong LIU ; Dazhi XU ; Caiqiong XIANG ; Guangjun YAN ; Dongxiu LAI
China Modern Doctor 2025;63(17):52-55
Objective To explore the medication characteristics of Yan Guangjun in treating cancer-related fatigue in colorectal cancer through data mining.Methods The cases of intestinal cancer-related fatigue treated by Yan Guangjun in outpatient clinics were collected,and the frequency and properties of drugs were summarized;the correlation rules,complex networks and cluster analysis were carried out on the Chinese medicine in the prescription.Results A total of 61 prescriptions were included in the study,covering 146 types of traditional Chinese medicines.The most frequently used category of drugs was tonics,with the most commonly used drugs being Baizhu,Fuling,Gancao,Huangqi,and Dangshen,etc.The dominant properties and flavors of the drugs were warm,cold,neutral,sweet,bitter,and pungent.The drugs meridians were attributed mainly the liver,spleen,and kidney meridians.Six different combinations of traditional Chinese medicine formulas were identified.Conclusion Yan Guangjun's treatment of cancer-related fatigue in colorectal cancer is fundamentally based on strengthening the spleen and replenishing Qi,warming Yang and nourishing the kidneys,while also nourishing Yin and enriching blood to counteract the dryness of warming yang.During the process of tonifying the body's vital energy,detoxification and anticancer effects are also achieved,combining both attack and tonification.
3.Clinical features and prognosis of different primary sites in early-stage follicular lymphoma: an analysis of the SEER database
Qiuzi ZHONG ; Yunpeng WU ; Mingyuan ZHU ; Wenhui CAI ; Cui GAO ; Ting ZHAO ; Dazhi CHEN ; Gaofeng LI ; Yonggang XU ; Lipin LIU ; Xin LIU ; Siye CHEN ; Shunan QI ; Ye-Xiong LI ; Ye LIU
Chinese Journal of Radiation Oncology 2025;34(6):560-568
Objective:To investigate the clinical characteristics and prognosis of follicular lymphoma (FL) patients with different primary sites using the Surveillance, Epidemiology, and End Results (SEER) database.Methods:Clinical data of 7167 patients with early-stage FL (stage I-II) from the SEER database between 2000 and 2015 were respectively analyzed. Primary sites were divided into intranodal and extranodal types. Intranodal primary sites included supradiaphragmatic lymph nodes (LN), subphrenic lymph nodes and Waldeyer's ring. Extranodal primary sites consisted of skin, gastrointestinal tract, duodenum, head and neck, other sites. Prognostic factors and overall survival (OS) in patients with different primary sites were analyzed. OS rate was evaluated using Kaplan-Meier method and survival difference between primary sites was compared with log-rank test. Inverse probability treatment weighting (IPTW) and multi-variable analysis were applied to adjust for confounding factors. Multivariate Cox regression analysis of influencing factors of OS was performed.Results:The median age was 63 years old, with the median follow-up time of 63 months. There was no difference in prognosis among the intranodal groups or between the intranodal and extranodal groups. The 10-year OS rates of the supradiaphragmatic lymph LN ( n=2146), subdiaphragmatic LN ( n=2811), and the Waldeyer's ring ( n=151) groups were 70.7%, 69.9% and 73.4%, respectively ( P=0.422 for infradiaphragmatic LN vs. supradiaphragmatic LN, P=1.000 for Waldeyer's ring vs. supradiaphragmatic LN), and 70.3% and 68.9% for intranodal ( n=5108) and extranodal ( n=2059), respectively. There was no significant difference in OS between the groups ( P=0.581) after IPTW adjustment. The most common primary sites in extranodal disease were skin, gastrointestinal tract, head and neck, and duodenum. The 10-year OS for skin, gastrointestinal tract, and cutaneous was 74.2%, 74.7%, and 87.3%, respectively, significantly higher than 55.6% for other sites (duodenum vs. others sites, gastrointestinal vs. others sites, skin vs. others sites: all P<0.001). Multivariate Cox regression analysis revealed that difference in OS was not significant among the intranodal groups or between the intranodal and extranodal groups. However, different extranodal primary site was an independent prognostic factor for OS. Conclusions:Early FL patients with supradiaphragmatic LN, subdiaphragmatic LN and Waldeyer's ring, and between the intranodal and extranodal primary sites obtain similar prognosis. However, early-stage FL patients with different extranodal primary sites have prognostic differences. The prognosis of primary skin, gastrointestinal tract and duodenum is significantly better than that of other extranodal primary sites.
4.Comparison of the efficacy and adverse events of radiotherapy timing and field extent after radical prostatectomy for prostate cancer
Mingyuan ZHU ; Ming LIU ; Lipin LIU ; Wenhui CAI ; Hui ZHU ; Gaofeng LI ; Qinhong WU ; Hailei LIN ; Dazhi CHEN ; Jingyi JIN ; Cui GAO ; Yonggang XU ; Qiuzi ZHONG
Chinese Journal of Radiation Oncology 2025;34(5):437-445
Objective:To compare the clinical efficacy and adverse events of different postoperative radiotherapy strategies (adjuvant radiotherapy versus salvage radiotherapy) and different irradiation fields (prostate bed versus prostate bed + pelvic radiation) in patients after radical prostatectomy for prostate cancer.Methods:This retrospective analysis included clinical data from 115 patients with localized or locally advanced prostate cancer who received intensity-modulated radiotherapy (IMRT) after radical prostatectomy at Beijing Hospital between March 2014 and September 2023. Among them, 40 patients received adjuvant radiotherapy, and 75 received salvage radiotherapy. And 74 patients received irradiation to both the prostate bed and pelvic (prostate bed + pelvic radiation group), while 41 patients received irradiation to the prostate bed alone (prostate bed irradiation group). Comparison was made between the adjuvant radiotherapy group and salvage radiotherapy group, as well as between prostate bed + pelvic radiation group and prostate bed irradiation group, in terms of overall survival (OS), progression-free survival (PFS), locoregional recurrence-free survival (LRRFS), and the incidence of adverse events. Clinical characteristics were compared using the chi-square test. Survival rates were calculated using the Kaplan-Meier method and compared using the log-rank test. Prognostic factors affecting survival were analyzed using Cox multivariate regression.Results:The median follow-up duration was 73.1 months. The 5-year OS, PFS and LRRFS rates for the entire cohort were 96.4%, 86.4%, and 93.2%, respectively. A total of 59 patients (51.3%) experienced grade 1-2 acute radiotherapy-related adverse events, while 43 patients (37.4%) experienced grade 1-2 late radiotherapy-related adverse events. No grade ≥ 3 late adverse events were observed. There were no statistically significant differences in OS, PFS, or LRRFS between the adjuvant and salvage radiotherapy groups ( P = 0.807, 0.996, and 0.976, respectively), or in the incidence of grade 1-2 acute or late adverse events ( P > 0.05). The OS rate in the prostate bed + pelvic radiation group was significantly lower than that in the prostate bed irradiation group ( P = 0.036), while no significant differences were found in PFS or LRRFS ( P = 0.109 and 0.190, respectively), or in the incidence of grade 1-2 acute or late adverse events ( P > 0.05). Multivariable analysis showed no statistically significant differences in OS, PFS, or LRRFS between the adjuvant and salvage radiotherapy groups, or between the prostate bed and prostate bed + pelvic irradiation groups ( P = 0.756, 0.341, 0.605; 0.938, 0.987, 0.605, respectively). Conclusions:In the era of modern IMRT, both adjuvant and salvage radiotherapy, as well as prostate bed and prostate bed + pelvic irradiation, demonstrate similar efficacy and safety profiles after radical prostatectomy for prostate cancer. Treatment outcomes were favorable, and adverse events were minimal.
5.The relationship between coronary artery measurements combined with C-reactive protein, erythrocyte sedimentation rate and coronary artery lesionsin with incomplete Kawasaki disease in children
Dazhi JIANG ; Jianchang ZHU ; Peng CHEN ; Shuang LIU
Chinese Journal of Postgraduates of Medicine 2025;48(6):564-569
Objective:To explore the relationship between coronary artery measurements combined with C-reactive protein(CRP), erythrocyte sedimentation rate(ESR) and coronary artery lesionsin(CAL) with incomplete Kawasaki disease (IKD) in children.Methods:Sixty-eight cases of pediatric IKD admitted to Huaibei Maternal and Child Health Care Hospital from January 2020 to April 2024 were selected as the IKD group, and 34 healthy children undergoing physical examination during the same period were selected as the control group according to the principle of 2∶1 pairing. Echocardiographic Z values including left coronary artery (LCA)-Z, right coronary artery (RCA)-Z, left anterior descending branch (LAD)-Z, left circumflex branch (LCX)-Z and CRP, ESR were compared between the two groups. General information of children with or without CAL were compared. The multivariate Logistic regression was used to screen the risk factors of IKD combined with CAL, and receiver operating characteristic (ROC) curve was used to analyze the predictive value of each index to IKD combined with CAL.Results:The LCA-Z, RCA-Z, LAD-Z, LCX-Z and the levels of CRP, ESR in the IKD group were higher than those in the control group: 3.26 ± 0.97 vs. 1.35 ± 0.28, 3.46 ± 0.92 vs. 1.01 ± 0.29, 3.18 ± 0.69 vs. 1.18 ± 0.34, 2.97 ± 0.68 vs.1.27 ± 0.34, (39.97 ± 9.03) mg/L vs. (4.21 ± 1.05) mg/L, (59.67 ± 16.34) mm/1 h vs. (12.85 ± 2.43) mm/1 h, there were statistical differences ( P<0.05). The duration of fever, intravenous immunoglobulin (IVIG) treatment response, IVIG start time, creatine kinase (CK), creatine kinase-MB(CK-MB), and N-terminal pro-B-type natriuretic peptide (NT-proBNP) between the children with IKD and CAL, IKD without CAL: (10.02 ± 2.45) d vs. (7.68 ± 1.43) d, 65.22%(15/23) vs. 88.89%(40/45), 60.87%(14/23) vs. 86.67%(39/45), (236.78 ± 59.74) U/L vs. (192.67 ± 35.41) U/L, (45.19 ± 9.85) U/L vs. (33.18 ± 9.87) U/L, (1.78 ± 0.32) μg/L vs. (0.92 ± 0.20) μg/L, there were statistical differences ( P<0.05). Logistic regression analysis showed that the duration of fever, IVIG treatment response, IVIG initiation time, CK, CK-MB, NT-proBNP, echocardiographic Z value, CRP and ESR levels were independent risk factors for IKD combined with CAL ( P<0.05). ROC curve analysis results showed that the area under the curve of IKD combined with CAL predicted by LCA-Z, RCA-Z, LADE-Z, LCX-Z, CRP and ESR was the largest, which was 0.917 (95% CI 0.824 - 0.970), which was higher than that diagnosed by each index alone ( P<0.05). Conclusions:There is a certain relationship between the echocardiographic Z values, CRP and ESR in children with IKD and CAL, which can be used to assist in the evaluation of IKD complicated with CAL.
6.The relationship between coronary artery measurements combined with C-reactive protein, erythrocyte sedimentation rate and coronary artery lesionsin with incomplete Kawasaki disease in children
Dazhi JIANG ; Jianchang ZHU ; Peng CHEN ; Shuang LIU
Chinese Journal of Postgraduates of Medicine 2025;48(6):564-569
Objective:To explore the relationship between coronary artery measurements combined with C-reactive protein(CRP), erythrocyte sedimentation rate(ESR) and coronary artery lesionsin(CAL) with incomplete Kawasaki disease (IKD) in children.Methods:Sixty-eight cases of pediatric IKD admitted to Huaibei Maternal and Child Health Care Hospital from January 2020 to April 2024 were selected as the IKD group, and 34 healthy children undergoing physical examination during the same period were selected as the control group according to the principle of 2∶1 pairing. Echocardiographic Z values including left coronary artery (LCA)-Z, right coronary artery (RCA)-Z, left anterior descending branch (LAD)-Z, left circumflex branch (LCX)-Z and CRP, ESR were compared between the two groups. General information of children with or without CAL were compared. The multivariate Logistic regression was used to screen the risk factors of IKD combined with CAL, and receiver operating characteristic (ROC) curve was used to analyze the predictive value of each index to IKD combined with CAL.Results:The LCA-Z, RCA-Z, LAD-Z, LCX-Z and the levels of CRP, ESR in the IKD group were higher than those in the control group: 3.26 ± 0.97 vs. 1.35 ± 0.28, 3.46 ± 0.92 vs. 1.01 ± 0.29, 3.18 ± 0.69 vs. 1.18 ± 0.34, 2.97 ± 0.68 vs.1.27 ± 0.34, (39.97 ± 9.03) mg/L vs. (4.21 ± 1.05) mg/L, (59.67 ± 16.34) mm/1 h vs. (12.85 ± 2.43) mm/1 h, there were statistical differences ( P<0.05). The duration of fever, intravenous immunoglobulin (IVIG) treatment response, IVIG start time, creatine kinase (CK), creatine kinase-MB(CK-MB), and N-terminal pro-B-type natriuretic peptide (NT-proBNP) between the children with IKD and CAL, IKD without CAL: (10.02 ± 2.45) d vs. (7.68 ± 1.43) d, 65.22%(15/23) vs. 88.89%(40/45), 60.87%(14/23) vs. 86.67%(39/45), (236.78 ± 59.74) U/L vs. (192.67 ± 35.41) U/L, (45.19 ± 9.85) U/L vs. (33.18 ± 9.87) U/L, (1.78 ± 0.32) μg/L vs. (0.92 ± 0.20) μg/L, there were statistical differences ( P<0.05). Logistic regression analysis showed that the duration of fever, IVIG treatment response, IVIG initiation time, CK, CK-MB, NT-proBNP, echocardiographic Z value, CRP and ESR levels were independent risk factors for IKD combined with CAL ( P<0.05). ROC curve analysis results showed that the area under the curve of IKD combined with CAL predicted by LCA-Z, RCA-Z, LADE-Z, LCX-Z, CRP and ESR was the largest, which was 0.917 (95% CI 0.824 - 0.970), which was higher than that diagnosed by each index alone ( P<0.05). Conclusions:There is a certain relationship between the echocardiographic Z values, CRP and ESR in children with IKD and CAL, which can be used to assist in the evaluation of IKD complicated with CAL.
7.Study of medication characteristics of cancer-related fatigue in colorectal cancer based on data mining
Chong LIU ; Dazhi XU ; Caiqiong XIANG ; Guangjun YAN ; Dongxiu LAI
China Modern Doctor 2025;63(17):52-55
Objective To explore the medication characteristics of Yan Guangjun in treating cancer-related fatigue in colorectal cancer through data mining.Methods The cases of intestinal cancer-related fatigue treated by Yan Guangjun in outpatient clinics were collected,and the frequency and properties of drugs were summarized;the correlation rules,complex networks and cluster analysis were carried out on the Chinese medicine in the prescription.Results A total of 61 prescriptions were included in the study,covering 146 types of traditional Chinese medicines.The most frequently used category of drugs was tonics,with the most commonly used drugs being Baizhu,Fuling,Gancao,Huangqi,and Dangshen,etc.The dominant properties and flavors of the drugs were warm,cold,neutral,sweet,bitter,and pungent.The drugs meridians were attributed mainly the liver,spleen,and kidney meridians.Six different combinations of traditional Chinese medicine formulas were identified.Conclusion Yan Guangjun's treatment of cancer-related fatigue in colorectal cancer is fundamentally based on strengthening the spleen and replenishing Qi,warming Yang and nourishing the kidneys,while also nourishing Yin and enriching blood to counteract the dryness of warming yang.During the process of tonifying the body's vital energy,detoxification and anticancer effects are also achieved,combining both attack and tonification.
8.Clinical features and prognosis of different primary sites in early-stage follicular lymphoma: an analysis of the SEER database
Qiuzi ZHONG ; Yunpeng WU ; Mingyuan ZHU ; Wenhui CAI ; Cui GAO ; Ting ZHAO ; Dazhi CHEN ; Gaofeng LI ; Yonggang XU ; Lipin LIU ; Xin LIU ; Siye CHEN ; Shunan QI ; Ye-Xiong LI ; Ye LIU
Chinese Journal of Radiation Oncology 2025;34(6):560-568
Objective:To investigate the clinical characteristics and prognosis of follicular lymphoma (FL) patients with different primary sites using the Surveillance, Epidemiology, and End Results (SEER) database.Methods:Clinical data of 7167 patients with early-stage FL (stage I-II) from the SEER database between 2000 and 2015 were respectively analyzed. Primary sites were divided into intranodal and extranodal types. Intranodal primary sites included supradiaphragmatic lymph nodes (LN), subphrenic lymph nodes and Waldeyer's ring. Extranodal primary sites consisted of skin, gastrointestinal tract, duodenum, head and neck, other sites. Prognostic factors and overall survival (OS) in patients with different primary sites were analyzed. OS rate was evaluated using Kaplan-Meier method and survival difference between primary sites was compared with log-rank test. Inverse probability treatment weighting (IPTW) and multi-variable analysis were applied to adjust for confounding factors. Multivariate Cox regression analysis of influencing factors of OS was performed.Results:The median age was 63 years old, with the median follow-up time of 63 months. There was no difference in prognosis among the intranodal groups or between the intranodal and extranodal groups. The 10-year OS rates of the supradiaphragmatic lymph LN ( n=2146), subdiaphragmatic LN ( n=2811), and the Waldeyer's ring ( n=151) groups were 70.7%, 69.9% and 73.4%, respectively ( P=0.422 for infradiaphragmatic LN vs. supradiaphragmatic LN, P=1.000 for Waldeyer's ring vs. supradiaphragmatic LN), and 70.3% and 68.9% for intranodal ( n=5108) and extranodal ( n=2059), respectively. There was no significant difference in OS between the groups ( P=0.581) after IPTW adjustment. The most common primary sites in extranodal disease were skin, gastrointestinal tract, head and neck, and duodenum. The 10-year OS for skin, gastrointestinal tract, and cutaneous was 74.2%, 74.7%, and 87.3%, respectively, significantly higher than 55.6% for other sites (duodenum vs. others sites, gastrointestinal vs. others sites, skin vs. others sites: all P<0.001). Multivariate Cox regression analysis revealed that difference in OS was not significant among the intranodal groups or between the intranodal and extranodal groups. However, different extranodal primary site was an independent prognostic factor for OS. Conclusions:Early FL patients with supradiaphragmatic LN, subdiaphragmatic LN and Waldeyer's ring, and between the intranodal and extranodal primary sites obtain similar prognosis. However, early-stage FL patients with different extranodal primary sites have prognostic differences. The prognosis of primary skin, gastrointestinal tract and duodenum is significantly better than that of other extranodal primary sites.
9.Comparison of the efficacy and adverse events of radiotherapy timing and field extent after radical prostatectomy for prostate cancer
Mingyuan ZHU ; Ming LIU ; Lipin LIU ; Wenhui CAI ; Hui ZHU ; Gaofeng LI ; Qinhong WU ; Hailei LIN ; Dazhi CHEN ; Jingyi JIN ; Cui GAO ; Yonggang XU ; Qiuzi ZHONG
Chinese Journal of Radiation Oncology 2025;34(5):437-445
Objective:To compare the clinical efficacy and adverse events of different postoperative radiotherapy strategies (adjuvant radiotherapy versus salvage radiotherapy) and different irradiation fields (prostate bed versus prostate bed + pelvic radiation) in patients after radical prostatectomy for prostate cancer.Methods:This retrospective analysis included clinical data from 115 patients with localized or locally advanced prostate cancer who received intensity-modulated radiotherapy (IMRT) after radical prostatectomy at Beijing Hospital between March 2014 and September 2023. Among them, 40 patients received adjuvant radiotherapy, and 75 received salvage radiotherapy. And 74 patients received irradiation to both the prostate bed and pelvic (prostate bed + pelvic radiation group), while 41 patients received irradiation to the prostate bed alone (prostate bed irradiation group). Comparison was made between the adjuvant radiotherapy group and salvage radiotherapy group, as well as between prostate bed + pelvic radiation group and prostate bed irradiation group, in terms of overall survival (OS), progression-free survival (PFS), locoregional recurrence-free survival (LRRFS), and the incidence of adverse events. Clinical characteristics were compared using the chi-square test. Survival rates were calculated using the Kaplan-Meier method and compared using the log-rank test. Prognostic factors affecting survival were analyzed using Cox multivariate regression.Results:The median follow-up duration was 73.1 months. The 5-year OS, PFS and LRRFS rates for the entire cohort were 96.4%, 86.4%, and 93.2%, respectively. A total of 59 patients (51.3%) experienced grade 1-2 acute radiotherapy-related adverse events, while 43 patients (37.4%) experienced grade 1-2 late radiotherapy-related adverse events. No grade ≥ 3 late adverse events were observed. There were no statistically significant differences in OS, PFS, or LRRFS between the adjuvant and salvage radiotherapy groups ( P = 0.807, 0.996, and 0.976, respectively), or in the incidence of grade 1-2 acute or late adverse events ( P > 0.05). The OS rate in the prostate bed + pelvic radiation group was significantly lower than that in the prostate bed irradiation group ( P = 0.036), while no significant differences were found in PFS or LRRFS ( P = 0.109 and 0.190, respectively), or in the incidence of grade 1-2 acute or late adverse events ( P > 0.05). Multivariable analysis showed no statistically significant differences in OS, PFS, or LRRFS between the adjuvant and salvage radiotherapy groups, or between the prostate bed and prostate bed + pelvic irradiation groups ( P = 0.756, 0.341, 0.605; 0.938, 0.987, 0.605, respectively). Conclusions:In the era of modern IMRT, both adjuvant and salvage radiotherapy, as well as prostate bed and prostate bed + pelvic irradiation, demonstrate similar efficacy and safety profiles after radical prostatectomy for prostate cancer. Treatment outcomes were favorable, and adverse events were minimal.
10.Targeting Kindlin-2 in adipocytes increases bone mass through inhibiting FAS/PPARγ/FABP4 signaling in mice.
Wanze TANG ; Zhen DING ; Huanqing GAO ; Qinnan YAN ; Jingping LIU ; Yingying HAN ; Xiaoting HOU ; Zhengwei LIU ; Litong CHEN ; Dazhi YANG ; Guixing MA ; Huiling CAO
Acta Pharmaceutica Sinica B 2023;13(11):4535-4552
Osteoporosis (OP) is a systemic skeletal disease that primarily affects the elderly population, which greatly increases the risk of fractures. Here we report that Kindlin-2 expression in adipose tissue increases during aging and high-fat diet fed and is accompanied by decreased bone mass. Kindlin-2 specific deletion (K2KO) controlled by Adipoq-Cre mice or adipose tissue-targeting AAV (AAV-Rec2-CasRx-sgK2) significantly increases bone mass. Mechanistically, Kindlin-2 promotes peroxisome proliferator-activated receptor gamma (PPARγ) activation and downstream fatty acid binding protein 4 (FABP4) expression through stabilizing fatty acid synthase (FAS), and increased FABP4 inhibits insulin expression and decreases bone mass. Kindlin-2 inhibition results in accelerated FAS degradation, decreased PPARγ activation and FABP4 expression, and therefore increased insulin expression and bone mass. Interestingly, we find that FABP4 is increased while insulin is decreased in serum of OP patients. Increased FABP4 expression through PPARγ activation by rosiglitazone reverses the high bone mass phenotype of K2KO mice. Inhibition of FAS by C75 phenocopies the high bone mass phenotype of K2KO mice. Collectively, our study establishes a novel Kindlin-2/FAS/PPARγ/FABP4/insulin axis in adipose tissue modulating bone mass and strongly indicates that FAS and Kindlin-2 are new potential targets and C75 or AAV-Rec2-CasRx-sgK2 treatment are potential strategies for OP treatment.

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