To evaluate the clinical effects of rotary nickel-titanium instruments Mtwo in root canal therapy in the aged patients. Using step-back technique,80 teeth with pulpal and periapical involvement were instrumented by Mtwo in the M group, and by K file in the K group. Mtwo could keep the original curvature and flow of the root canals. No transportation, apical blockage, ledge or perforation was found in the M group. There was more complications in the K group than in the M group.The operative time was shorter and posttreatment pain seldom occurred in the M group. With rotary NiTi instruments Mtwo for seniles' root canals treatment, root canals can be prepared effectively and quickly,and is worth of clinical application.

Objective: To observe the effect of superior technology using three dimension radiation treatment plans (3D-RTPS) in the reduction of postradiation xerostomia in patients with head and neck cancer. Methods: 3D-RTPS of conventional radiation and new superior technique were applied in the patients of 3 kinds of head and neck cancer (tumor in middle, lateral, between middle and lateral area of head and neck). Superior technology including superior ray entrance, multi fields, conformal irradiation and application of wedges. Analysis of 3D dose distributions and dose volume histograms (DVH) was used to evaluate the dose and volume in tumor, parotids and spinal cord in the patients. Tumor dose of 55.6～68.6 Gy (average 58.8 Gy) was given to the patients in conventional radiation group in 8 patients, 53.5～68.5 Gy (average 58.3 Gy) to new radiation technique group in 12 patients. Whole saliva flow rate and subjective xerostomia scores were assessed in patients during radiation course and follow-up. Results: The dose in contralateral parotids in patients with tumor in lateral area, between lateral and middle area in conventional radiation and new radiation technique groups were 51.8～64.3 Gy and 0.4～1.4 Gy, respectively. The dose in parotids in patients with tumor in middle area in conventional radiation and new radiation technique groups were 51.8 and 24.7 Gy respectively. The rate of xerostomia at the end of radiotherapy and in 4～6 months follow-up after radiotherapy in patients of new radiation technique group were 8.3 % (1/12) and 0 respectively. Those in patients in conventional radiation group were 87.5 % (7/8) and 50 % (4/8) respectively. Conclusion: Superior technology using 3D-RTPS can reduce the rate of postradiation xerostomia in patients with head and neck cancer.

Objective To study the time relationships between apoptosis of neurons and endotheliocytes with the expression of Bcl 2 and Bax after reperfusion of focal cerebral ischemia in rats. Methods Coronal sections of brain were analyzed using an in situ terminal deoxynucleotidyl transferase mediated biotinylated deoxyuridine triphosphate nick end labeling(TUNEL)and immunohistochemical staining methods to observe apoptosis of neurons and endotheliocytes,and expression of Bcl 2 and Bax after reperfusion(2,6,12,24hours and 2,3,7,14,21 days)of focal cerebral ischemia. Results 1.In the ischemic penumbra,apoptotic cells were increased at 2h after reperfusion,peaked at 12 24?h,then decreased successfully for 7 14?days.The time of apoptotic endothelial cells was 12?h later than that of apoptotic neurons.2.The expression of Bcl 2 protein began at 2?h after reperfusion,peaked at 12 24?h,and decreased for 7 14?days.3.Bax protein expressed from 6?h after reperfusion;peaked at 24 48?h,and lasted for 14days.4.The time phase of Bcl 2 expression was similar to the Bax is but later than it. Conclusion\ Apoptosis was a pattern of cell death after cerebral ischemia/reperfusion.The time of apoptotic endothelial cells was later than that of apoptotic neurons.Bcl 2 and Bax play a regulatory role in the apoptotic process.\;[

Object To study the promoting effects of Mycena anoectochila, M dendrobii and M. orchidicola on growth of Dendrobium candidum Wall. ex Ldl. and Anoectochilus roxburghii (Wall ) Ldl Methods The protocorm and plantlet of D candidum and A roxburghii were grown in dual culture with endophytic fungi to observe the proliferation of protocorm and the growth of plantlet. Results The growth of plantlet of D candidium, which was inoculated three endophytic fungi, increased markedly 3 5 times more than those of the control one M dendrobii and M orchidicola also promoted multiplication on protocorm of D candidum (P

A new retinoscope with the ultrasonic distance measure instrument is designed for directly displaying the dioptre of artificial myopia caused by retinoscopy distance.Optometrist can obtain real dioptre of the patient if only adding the direct dioptre of artificial myopia to neutral dioptre obtained at roll-back point.This instrument can obviously increase the accuracy of refraction.

Respirator is one of medical equipment in the first-aid, the clinical risk of it is much higher than the general medical equipment and diagnostic or patient monitor equipment. As a result, the quality control of it is particularly important. Several issues of the quality control of the respirator, such as the pre -purchase technical feasibility study, acceptance and installation after arrival, respirator use and management, respirator-reported loss demonstration and cost- benefit analysis of it are discussed from the angle of clinical engineers and technical personnel.

Objective To investigate the expression of integrin ?_(1) in human osteosarcoma_()and its relationship to prognosis.Methods The expression of integrin ?_(1)was measured by immunohistochemistry and its relationship to prognosis was analyzed statistically.Results Twenty-five of 34 osteosarcoma specimens were found positive staining of integrin ?_(1)(73.5%).The expression levels of integrin ?_(1)was not related to Dahlin classification of osteosarcoma,age and sex,but significantly increased in the osteoblast type and was related to poor survival.Conclusion Integrin ?_(1) can serve as a new biological indicator for the prognosis in osteosarcoma.

Hyperhomocysteinemia is one of the independent risk factors of cerebrovascular diseases. Methylenetetrahydrofolate reductase (MTHFR) C677T gene mutation often results in the increase of plasma homocysteine levels, but the relationship between the genetic polymorphism of MTHFR and cerebrovascular diseases is not significant.

Acupuncture Points ; Acupuncture Therapy ; Adult ; Chronic Disease ; therapy ; Defecation ; Diarrhea ; physiopathology ; therapy ; Humans ; Male

BACKGROUND:Traditional analgesia method can relieve the pain after total knee arthroplasty, but the prognosis is poor and drug dependence is strong. Therefore, it is of great significance to study the analgesic drugs in perioperative period of total knee arthroplasty. OBJECTIVE:To explore the analgesic effect of gabapentin combined with continuous femoral nerve block on total knee arthroplasty. METHODS: A total of 48 patients with knee osteoarthritis receiving total knee arthroplasty in the Department of Orthopedics, Affiliated Hospital of Inner Mongolia Medical University from October 2013 to October 2014 were enroled in this study. Using general anesthesia, femoral nerve block was conducted before anesthesia. Analgesia pump was connected after arthroplasty. Patients were randomized to two groups. The control group received multimodal analgesia, and the experimental group received gabapentin combined with continuous femoral nerve block analgesia. Patient’s pain was scored by using resting, activity visual analog scale. Postoperative quality of life, range of motion of knee joint and complications were observed. RESULTS AND CONCLUSION:No significant difference in preoperative resting pain and activity pain was detected between the two groups (P > 0.05). Visual analog scale scores were decreased with time prolonged after arthroplasty in both groups. Visual analog scale scores of resting pain and activity pain were significantly lower in the experimental group than in the control group at 1, 3 and 7 days and 1 month (P < 0.05). Range of motion was significantly larger in the experimental group than in the control group at 3-7 days after arthroplasty (P< 0.05). Activity of daily living score, physical function score, mental function score and social function score were significantly higher in the experimental group than in the control group (P < 0.05). The complication rate was significantly lower in the experimental group than in the control group (17%, 46%,P < 0.05). These data indicate that during perioperative period of total knee arthroplasty, analgesic effect of gabapentin combined with continuous femoral nerve block is ideal. In particular, in patients with acute pain within 48 hours, their combination can promote early rehabilitation of the patient’s knee, and few side effects are found.