Objective:To observe the effects of dentin proseeded with BMSCs or PDLCs incorporated with PDLCs sheets and calci-nated ceramic bovine bone(CBB)in the reconstruction of periodontal tissue.Methods:Root dentin slices were prepared and pre-seeded with BMSCs or PDLCs from beagle dog.After cultivated in osteoinduction medium(OST groups)orα-modified eagle's medi-um(MEM groups)for 3 weeks,the dentin slices observed by scanning electron microscope (SEM).Then the slices were wrapped successively with PDLCs sheets and CBB as new constructs(BMSCs or PDLCs/dentin/PDLCs sheets/CBB).The new constructs were transplanted into nude mice subcutaneously,8 week after transplantation,samples were havested and examined by HE staining.Re-sults:Enough cells and extracellular matrices were detected on the dentin slices by SEM in vitro.A little new immature cementum-like tissue without periodontal-like tissue on the surface of the new construcs was observed in OST groups.By contrast,in MEM groups,periodontal-like without immature cementum-like tissue formation was observed.Conclusion:Dentin proseeded with BMSCs or PDLCs incorporated with PDLCs sheets and CBB cultured by MEM can promote periodontal-like tissue regeneration.Cultured with osteooinduction medium can promote cementum-like tissue regeneration.

Objective To investigate whether serum level of low-density lipoprotein cholesterol can predict the expan?sion of hemorrhage growth in elderly male patients with acute hypertensive intracerebral hemorrhage. Methods Patients (n=108) who visited our hospital with from June 2012 until May 2014 spontaneous hypertensive intracerebral hemorrhage with?in 6 hours of onset which is confirmed by initial computed tomography (CT) were sent to repeated CT within 24 hours of on?set. All selected patients were divided into the LDL-C≥2.49 mmol/L group and LDL-C<2.49 mmol/L group. Clinical data of these 2 groups were compared and the relationships of hematoma growth and its risk factors were analyzed. Results Baseline blood pressure, the level of blood glucose, PT, APTT, FIB, PLT and hemorrhage volume did not differ significantly between the LDL-C≥2.49 mmol/L group and LDL-C<2.49 mmol/L group. The ratio of hemorrhage growth in LDL-C<2.49 mmol/L group was significantly higher than that in LDL-C≥2.49 mmol/L group (34.21%vs 11.43%). Multiple logistic regres?sion analysis showed that LDL-C<2.49 mmol/L was the only risk factor contribute to hemorrhage growth. Conclusion Pa?tients with LDL-C<2.49 mmol/L in acute intracerebral hemorrhage are of high risk of hemorrhage growth so early attention and appropriate procedure are needed to prevent or slow its growth.

AIM:To study the pharmacokinetics of penciclovir injection in Chinese healthy volunteers.METHODS:10 healthy volunteers were infused a single dose of 10 mg/kg of penciclovir.The concentrations of penciclovir in plasma and urine were determined by HPLC-FLD.Pharmacokinetic parameters were conformed to a non-compartment model analyzed by WinNonLin program.RESULTS:The main pharmacokinetic parameters were as follows:the ke was(0.37?0.05)/h;the t1/2 was(1.91?0.26)h;the Cmax was(9.8?1.6)mg/L;the AUC0-t was(19.1?2.8)mg?L-1?h;the AUC0-∞ was(19.6?2.9)mg?L-1?h;the Vd was(1.4?0.4)L/kg;the CL was(0.52?0.08)L?h?kg-1.About 70% of penciclovir was excreted into urine within 12 h.CONCLUSION:Penciclovir is widely distributed and rapidly excreted,predominantly by the kidney.

Objective To investigate the effect of high-flux hemodialysis on insulin resistance and microinflammatory state in elderly diabetic nephropathy (DN) patients with maintenance hemodialysis(MHD).Methods A total of 49 elderly DN patients with MHD and 10 healthy controls undergoing health examination survey were enrolled.Levels of homeostasis model assessment of insulin resistance index(HOMA-IR),interleukin-6(IL-6) and high sensitivity C-reactive protein(hs-CRP) were analyzed and compared between patients and the controls.Patients with MHD were randomly divided into two groups:high-flux hemodialysis(HFHD) group and low-flux hemodialysis (LFHD) group.Changes of the parameters including HOMA-IR,IL-6,hs CRP and urea excretion rate(kt/v) were observed before and after treatment for 12 months.Results Levels of IL-6,hs-CRP and HOMA-IR were significantly higher in DN patients with MHD than in the control group [(126.22±13.23)ng/L vs.(12.68±3.63)ng/L,(12.13±1.73)mg/L vs.(2.55±1.27) mg/L,(4.83 ±1.23) vs.(0.32 ± 0.15),respectively,all P＜ 0.01].The levels of IL-6 and Hs-CRP were positively correlated with HOMA-IR in elderly DN patients (R =0.656,0.729,R2 =0.43,0.532,both P＜0.01).Compared with before treatment,levels of fasting insulin(Fins),HOMA-IR and IL-6 were decreased in HFHD group after MHD for 12 months (all P＜ 0.05),while there were no differences in levels of Fins,HOMA-IR,IL-6 and hs-CRP in the LFHD group before and after MHD (all P＞0.05).The levels of Fins,HOMA-IR and IL-6 were significantly lower in the HFHD group than in the LFHD group after MHD for 12 months(all P＜0.05).Conclusions Insulin resistance and microinflammatory are common observed in elderly DN patients with MHD.High-flux hemodialysis may decrease the levels of IL-6 and hs-CRP,and ameliorate insulin resistance and microinflammatory state.

Objective To improve the understanding of pulmonary mucormycosis by analyzing the clinical manifestations,imaging features,diagnosis,treatment and prognosis of this disease.Methods The clinical data of eight patients diagnosed as pulmonary mucormycosis by histopathologic examination were retrospectively analyzed.Results Eight patients included six males and two females with age from 36 days to 66 years.Underlying conditions covered diabetes (n =4),renal transplantation (n =3),premature (n =1) and long-term corticosteroid treatment in two cases.Imaging manifestations revealed multiple irregular lumps or nodules in three cases,multiple cavities with thick wall in three cases,diffuse lung infiltrate in one case and lung opacities in one case.The diagnoses of seven patients were confirmed by percutaneous needle lung biopsy and the remaining one was diagnosed with fiberoptic bronchoscopy biopsy.Surgery combined with amphotericin B liposome(60 mg/d for three weeks)was applied to one patient who was cured with no recurrence after a 22 month follow-up.Three cases were given amphotericin B liposome (a newborn with 7mg/d for 62 days,the other two 60 mg/d for 31 days and 70 mg/d for 71 days respectively).All had achieved marked response with follow up from 8 to 29 months,but one patient relapsed and died of recurrent lung mucormycosis.The other three patients were treated with itraconazole 400-200 mg/d from 21 days to 1 year with duration of follow up from 1 month to 20 months.One patient was not evaluable due to missing.Two patients relapsed and one died.Conclusion Pulmonary mucormycosis is difficult to diagnose and treat with a high mortality.Percutaneous tranthoracic lung biopsy is a useful diagnostic method.Amphotericin B liposome or itraconazole may be active against mucus.Early control of causes is essential to improve the prognosis and reduce the recurrence in patients with pulmonary mucormycosis.

OBJECTIVE:To establish a method for the determination of sodium valproiate in human serum and to study the bioequivalence of steady state concentration C ssm in of the domestic and imported sodium valproiate sustained-release compound tablets.METHODS:Two periods of multi-oral administration of domestic and imported sodium valproiate sustained-release compound tablets were conducted alternately at random on20healthy male volunteers;the trough concentration of sodium valproate in human serum was determined by HPLC-fluorescence detection and the data were analyzed by3p97pro?gram.RESULTS:The blood concentration was steady after3d oral administration of both the domestic and imported sodium valproate sustained-release compound tablets.The C ssm in of domestic and imported products were(38.17?9.36)、(35.48?9.44)mg/L respectively.C ss min of domestic and imported sodium valproate sustained-release compound tablets were of bioe?quivalence either single or multi-oral administration.CONCLUSION:This HPLC-fluorescence method is quick,sensitive and economical,which can be used to monitor the concentration of sodium valproate in human serum.