Bone-related diseases are a group of inflammatory diseases characterized by abnormal bone resorption and formation,with a wide variety of diseases involving age,inflammation,obesity,genetics,radiation,and other pathogenic factors.In recent years,se-nescent cells have become an important mechanism for age-related diseases,and their role in bone-related diseases has attracted the at-tention of researchers.Senescent cells are gradually being used as therapeutic targets for bone-related diseases.In this paper,we pres-ent a review of the mechanism of senescent cells in various types of bone-related diseases,which will provide new strategies for the pre-vention and treatment of bone diseases.

Bone-related diseases are a group of inflammatory diseases characterized by abnormal bone resorption and formation,with a wide variety of diseases involving age,inflammation,obesity,genetics,radiation,and other pathogenic factors.In recent years,se-nescent cells have become an important mechanism for age-related diseases,and their role in bone-related diseases has attracted the at-tention of researchers.Senescent cells are gradually being used as therapeutic targets for bone-related diseases.In this paper,we pres-ent a review of the mechanism of senescent cells in various types of bone-related diseases,which will provide new strategies for the pre-vention and treatment of bone diseases.

Objective: To investigate the variants of middle colic artery (MCA) and ileocolic vein (ICV) and their influence on the deci-sion regarding approach of laparoscopic right hemicolectomy. Methods: We analyzed the diagnosis and treatment of one right colon cancer patient with variant MCA and ICV who was admitted to the Tianjin Medical University Cancer Hospital in March 2018. The pa-tient underwent laparoscopic right hemicolectomy via a limited medial approach after a multidisciplinary treatment (MDT) discussion. Following were the observation indicators: 1) surgical and postoperative recovery situations; 2) postoperative pathological examina-tion; and 3) follow-up situation. Results: 1) Surgical and postoperative recovery situations: the patient successfully underwent laparo-scopic right hemicolectomy via a limited medial approach. No intraoperative or postoperative complications occurred. Duration of postoperative hospital stay was 11 days. 2) Postoperative pathological examination: the number of dissected lymph nodes was 39. Postoperative pathological tumor stage was pT3N0. Postoperative pathological tumor type was moderately differentiated adenocarci-noma. 3) Follow-up situation: the patient was followed-up for 10 months with disease-free survival. Conclusions: Individual and stan-dard surgery will be the best choice for treating colon cancer patients. MDT can facilitate clinical decision-making and benefit patients.

Objective To investigate the clinical value of [11C]CFT PET in the diagnosis and severity assessment of Parkinson disease (PD). Methods Thirty-eight patients with PD at various Hoehn & Yahr (H&Y) stages were included and underwent a [11C]CFT PET scan. The correlation between [11C]CFT uptake and unified Parkinson disease rating scale part III (UPDRS III) of PD patients was evaluated by calculating Pearson’s regression coefficient. Statistical parametric mapping (SPM) analysis was performed to compare the difference of dopamine transporter (DAT) distribution between ear-ly and advanced PD patients. Results There was a significant reduction of [11C]CFT uptake in the bilateral striatum of PD patients. There was a significant negative correlation between clinical scores of UPDRS III, rigidity, bradykinesia, pos-ture, gait and [11C]CFT uptake in the striatum. The SPM analysis revealed a significant and asymmetric decrease of [11C] CFT uptake in the striatum, predominantly on the putamen and caudate nucleus contralateral to the onset limb, in the posterior area of ipsilateral putamen in early PD (H&Y 1-2) patients compared with the normal controls. There was a sig-nificant symmetric decrease of [11C]CFT uptake in both putamen and caudate nucleus in advanced PD (H&Y 3-5) pa- tients, compared with normal controls. Compared with early PD patients, the reduction of DAT was more severe in bilater-al caudate nucleus and the ipsilateral putamen in the advanced PD patients. Conclusions [11C]CFT PET is a sensitive biomarker in the diagnosis and assessment of disease severity of PD patients.