Kcnq1ot1 promotes osteogenic differentiation and suppresses osteoclast differentiation / 南方医科大学学报

OBJECTIVE@#To investigate the regulatory role of long non-coding RNA Kcnq1ot1 in osteoclast differentiation, osteogenic differentiation and osteoporosis.@*METHODS@#The expression of lnc-Kcnq1ot1, Bglap, Runx2, Alp, Bsp, Nfatc1, Mmp9, Ctsk and Oscar were detected by real-time quantitative PCR (qRT-PCR) in the femoral bones from mouse models of postmenopausal osteoporosis (ovariectomized mice, @*RESULTS@#The expression of lnc-Kcnq1ot1 was significantly upregulated during osteoblast differentiation but downregulated in the bone tissues of osteoporotic mice and during osteoclast differentiation (@*CONCLUSIONS@#Our data demonstrate that lnc-Kcnq1ot1 promotes osteogenic differentiation and alleviates osteoclast differentiation, suggesting the potential of lnc-Kcnq1ot1 as a therapeutic target against osteoporosis.

VITREORETINAL SURGERY FOR RHEGMATOGENOUS RETINAL DETACH-MENT ASSOCIATED WITH CHOROIDAL DETACHMENT / 中华眼底病杂志

OBJECTIVE: To evaluate the effect and causes of failure of vitreoretinal(VR) surgery in rbegmatogenous retinal detachments associated with choroidal detachment. METHOD: Reviewing the operative effects of the vitreoretinal surgeries in 61 patients(61 eyes) with rhegmatogenous retinal detachment associated with choroidal detachment and PVR in this hospital. Vitrectomy, peeling of preretinal membranes, fluid/air echange and inert gas, silicone oil tamponade were used in these patients according to need. RESULTS: On discharge from the hospital, the postoperative effect obtained in 40 case(65.57%), and out of 35 eyes receiving the inert gas tamponade 26(74.3%)got ef fective pesults. Fourteen cases were followed up for 3 months(averge 9.5 months)and 10(7.4%)of them revealed stable. The factors of influencing VR surgery seemed to be the range of the choroidal detachments, number of opreative times, the inert gas tamponede and the time of corticosteroid application. The causes of failure of opreation might relate to severe and anterior PVR, and giant tears. CONCLUSIONS: The VR surgery was thought to be profitable in treating rhegmatogenous retinal detachment associated with choroidal detachment and PVR.

Diagnosis and analysis in posterior vitreous detachment by ultrasonography / 中华超声影像学杂志

Objective To discuss the diagnosis characteristics and clinical value of posterior vitreous detachment (PVD) by color Doppler flow imaging(CDFI). Methods One thousand and two cases were examed by CDFI for the diagnosis standard and property of PVD. Results Typical acoustic properties of PVD: the B scan may show a very fluid thick line. There were two types complete PVD and part PVD based on the vitreous separated from the optic nerve. Kinetic echography typically showed a very fluid, undulating after movement of the completely PVD. Part PVD had more than one dot with attachments to the retina and less mobile than complete PVD. There was not blood flow signal on the PVD by CDFI. Conclusions Ultrasonography for PVD not only exactitudes,but also provides foundation for clinic.