Objective:To evaluate the effects of erythropoietin (EPO)on the proliferation and osteogenic differentiation of human dental pulp cells(hDPCs)in vitro.Methods:Isolated hDPCs were cultured and identified.The cells were treated by EPO and the proliferation of the cells was determined by CCK-8 assay.After incubation with EPO at 20 U /ml in osteogenic induction medium for 7 and 1 4 days,the mineralization of hDPCs was observed by alkaline phosphatase (ALP)activity assay and alizarin red staining.Real-time PCR was utilized to detect the expression of odontogenesis-related genes.Results:EPO enhanced the proliferation of hDPCs in a time-and dose-dependent manner.After treatment with EPO,ALP activity and the minerialized nodes of the cells increased(P <0.05);the expression levels of odontogenesis-related genes DSPP,OCN,OSTERIX and RUNX2 were upregulated(P <0.05).Con-clusion:EPO can promote proliferation and differentiation of human dental pulp cells.

A total of 118 patients (138 knees) who received total knee arthroplasty at the Department of Orthopedics, Guizhou Province People's Hospital between June 2000 and January 2007 were included in this study. These patients comprised 45 males and 73 females and were averaged (61±8) years old (range, 52-81 years). Of them, 28 (34 knees) suffered from rheumatoid arthritis, 6 (6 knees) from traumatic arthritis, 84 (98 knees) from severe osteoarthritis, 14 (18 knees) complicated by extraversion, and 25 (28 knees) complicated by inversion. Link Gemini knee prosthesis was used in 38 knees, Zimmer Nexgen knee prosthesis in 68 knees, and Depuy pfc sigma rotation platform knee system in 32 knees. All patients were followed up for an average of 28 months (range, 10 months-6 years). Prior to replacement, the mean knee score, according to the Hospital for Special Surgery (HSS) rating scale, was (34.00±7.65) points, and at the latest follow-up examination, it was (81.00±6.89) points. HSS score was excellent in 87 knees (63%), good in 43 knees (31%), and fair in 8 knees (6%). The excellent and good rate was 94%. Of 118 patients, 4 presented with infection and 3 showed deep venous thrombosis in lower limb following unilateral total knee arthroplasty and healed after anticoagulation and symptomatic therapy. There were 3 patients presenting with knee joint pains 2 months following knee joint arthroplasty. No knee joint red swelling and tenderness were found. Range-of-motion was basically normal. X-ray photograph indicated good position of prosthesis. Pains were relieved after femoral nerve block. All these findings suggest that total knee replacement is an effective method of treating severe knee joint diseases. INTRODUCTIONTotal knee arthroplasty (TKA), as an important part of artificial joint replacement for treatment of severe knee joint diseases, initiated from the first knee joint prosthesis developed by Cunstno in 1960s and was put in use. But following TKA, large-scale severe complications appear due to condition limitations, which results in failed surgery. With development of molecular biology and materials, as well as further research of installing technique and knee joint biomechanics, TKA has been shown to be gradually perfect theoretically. A novel prosthesis better corresponds to the physiological standards of human body in terms of structure design, material strength, and shape. These improvements greatly enhance prosthesis survival rate and markedly decreases complication incidence following TKA. TKA has been shown to be an efficient method of treating severe knee joint diseases. It can effectively relieve joint pains and improve joint functions, and is mostly used in elderly populations (over 60 years old) who complicated by other diseases, such as diabetes mellitus, hypertension, heart disease, phlebitis of lower extremities. In addition to above-mentioned, poor body resistance enhances surgery risk and difficulties, and complications would be correspondingly increased following TKA. The present study retrospectively analyzed a total of 118 patients with severe knee joint diseases who underwent TKA at the Department of Orthopedics, Guizhou Province People's Hospital between June 2000 and January 2007.

The overall situation of projects of ethnomedicine and ethnopharmacology funded by the National Natural Science Foundation of China (NSFC) since 2008 has been presented in this paper. The main source of characteristics and innovation of the funded projects were summarized, which may come from several aspects, such as the ethnomedical theories, the dominant diseases of ethnomedicine, special diseases in ethnic minorities inhabited areas, unique ethnomedical therapy, special methods for applying medication, endemic medicinal materials in ethnic minorities inhabited areas, same medicinal materials with different applications. Examples have been provided to give references to the applicants in the fields of ethnomedicine and ethnopharmacology.
Biomedical Research ; economics ; organization & administration ; China ; Ethnopharmacology ; economics ; organization & administration ; standards ; Financial Management ; Humans ; Medicine, Traditional ; economics ; standards ; Natural Science Disciplines ; economics

Objective To study the angiographie characteristics of coronary heart disease (CHD) patients with type 2 diabetes mellitus.Methods 292 patients with CHD underwent a selective angiography were selected,the characteristics of coronary arteriongraphy were compared in CHD patients with type 2 diabetes mellitus and nondiabetic group.Results In type 2 diabetes mellitus group,the degree of stenosis was higher than that in nondiabetic group (78.01% vs 52.32% )(P < 0.05 ), and the rate of three-vessel disease was higher than that in nondiabetic group (59.57% vs 36.42% )(P <0.05).Conclusion The angiographic characteristics were different in CHD patients with or without type 2 diabetes mellitus.Patients with type 2 diabetes mellitus was associated with more severity of lesion and more lesion vessel.

Mammalian target of rapamycin (mTOR)is an atypical serine/threonine protein kinase,which is a key protein kinase regulating cell growth,proliferation,translation,metabolism and autophagy.It's first known beca- nuse inhibited by rapamycin.Research indicated that mTOR plays a key regulating role in physiological and patho- logical process of cardiovascular system.The present article mainly reviewed research progress of mTOR signal path- way effect in cardiovascular system.

Objective To evaluate the CT manifestation of pancreatic carcinoma proved by patholoical results. Methods The patients were supine. Both plain and three-phase dynamic contrast-enhanced CT scan were performed. 100 ml of Ominipaque was injected at a rate of 2～4ml/s, with 5~10 mm slice thickness and interval. Results CT scanning clearly showed the direct signs or indirect signs of pancreatic carcinomal, which include: pancreatic mass, obstructive dilatation of the bile duct and pancreatic duct, the visualization of the abnormal large peripancreatic vessels, lymph node metastasis, etc. Conclusion Plain CT scanning shows clearly manifestation of pancreatic carcinomal and the surrounding tissue, and three-phase dynamic contrast-enhanced CT scan can clearly display the tiny changes of pancreatic parenchyma. Therefore it is valuable for diagnosis of pancreatic carcinomal.

Objective: To evaluate the importance of waist to hip ratio among all the possible risk factors in the development of NAFLD. Methods: The samples were selected from individuals receiving physical examination from the 14th of October to the 4th of November in 2004.The enrolling criteria were as follows:①BMI between 25-29.9.②ethanol consumption was less than 40 g per week.③markers of hepatitis virus were negative.④no diabetes mellitus.The diagnosis of fatty liver was based on sonographic evidence.According to the standards,81 cases were chosen,including 59 patients with NAFLD and 22 normal controls.Seven indices were recorded in fasting state: age,BMI,waist to hip ratio(WHR),serum cholesterol,serum lipid,serum glucose and insulin sensitivity index.Results: The fatty liver group,compared with the normal controls,was significantly marked with higher BMI(26.70 vs 26.15,(P=)0.026), WHR(0.90 vs 0.86,P=0.002),serum lipid(1.99 vs 1.42 P=0.001) and lower insulin sensitive index(0.025 vs 0.039,P=0.005).By binary logistic regression analysis,WHR and insulin sensitive index is significantly associated with the development of NAFLD,and the P value is 0.01 and 0.069 respectively. Conclusion: WHR is an independent factor in the development of NAFLD in patients with BMI matched and non-DM mild fatty individuals.

To meet the requirements of military medical readiness and to win in informatized war, striding development of Chinese medical equipment has to be performed. This paper presents related guiding ideology, principle, mission, objective and countermeasures.

Vitrectomy combined with internal limiting membrane (ILM) peeling and vitreous tamponade is a conventional method for treating macular hole (MH),but the visual acuity and MH closure rate remains to be further improved.After removal of posterior vitreous cortex,the ILM is grasped with an ILM forceps and peeled off in a circular fashion for approximately 1 disc diameters around the MH.During the circumferential peeling,the ILM is not removed completely from the retina but is left attached to the edges of the MH.The ILM was then massaged gently over the MH from all sides until the ILM became inverted and then peel all other ILM within vascular arcades.Inverted ILM flap technique is one of the important improvement methods in MH vitrectomy,especially for MH with large diameter and unhealed MH after ILM peeling.Compared with conventional vitrectomy combined with ILM peeling,inverted ILM flap technique can enhance MH closure and improve visual acuity.Due to lack of large sample observation in clinical trials of inverted ILM flap technique,we still need more cases and longer follow-up of this technology to more accurately evaluate the effectiveness and safety of this technique.

Background The studies on intravitreal ranibizumab for diabetic macular edema (DME) primarily focuses on the absolute change of central retinal thickness, while the affection of the relative change of central retinal thickness (RCRT) or relative change of central retinal thickening (RCRTing) on visual prognosis has not been elucidated completely.Objective This study aimed to evaluate the effect of RCRT and RCRTing in assessing visual prognosis in DME patients following intravitreal injection of ranibizumab.Methods A self-controlled observational study was designed.Thirty eyes of thirty patients with clinically significant DME (CSDME) were recruited in Beijing 401 Hospital of China Nuclear Industry from November 2013 to October 2014.Ranibizumab of 0.05 ml (10 mg/ml) was intravitreally injected by 30G syringe needle at 3.5 mm posterior corneal limbus.Best corrected visual acuity (BCVA) far 2.5 meters away modified ETDRs visual chart was examined before injection and 3 and 6 months after injection,and the BCVA difference value between before injection and 6 months after injection was calculated as the absolusion BCVA (ABCVA).Spectral domian optical coherence tomography (SD-OCT) system was employed to measure the central retinal thickness (CRT) and to calculate the RCRT and RCRTing value.The correlations of RCRT or RCRTing with ABCVA was analyzed.Results The LogMAR values were (0.66±0.20) ,(0.40±0.25) BCVA and (0.37±0.25) before injection and 3,6 months after injection respectively in the CSDME patients,with a significant difference among them (F =36.79,P＜0.05).The values were obviously improved 3 and 6 months after injection compared with before injection (both at P＜0.05).The mean ABCVA (LogMar) of the patients was (0.30±0.21).The CRT 3,6 ,pmyjd sgyrt omkrvyopm values were (508.63±130.44), (331.07±71.84) and (311.77±64.47)μm before injection and respectively in the CSDME patients, showing a significant difference among them (F=49.78,P＜0.05).The CRT values were evidently reduced 3 and 6 months after injection in comparison with before injection (both at P＜0.05) ,and the mean ACRT value was (196.87±140.59) μm.The ABCVA values were (0.13±0.13),(0.44±0.14),(0.07±0.09) and (0.41±0.15) LogMAR in the RCRT＜35％ group,RCRT≥ 35％ group,RCRTing＜69％ group and RCRTing ≥ 69％ group, respectively.Significant differences were found in ABCVA between the RCRT＜35％ group and RCRT≥35％ group (t=-6.27,-8.65,both at P＜0.05).RCRT and RCRTing showed the positive correlations with ABCVA in the CSDME patients (r =0.86,0.79, P ＜ 0.05).Conclusions RCRT and RCRTing can identify well the optimal responders to intravitreal ranibizumab and predict BCVA improvement after treatment.RCRT has better association with ABCVA than RCRTing.RCRTing may be preferable when retinal thickening is more severe.