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find Author "王虎" 10 results
  • IDENTIFICATION OF PROPERTY OF NERVE FASCICLES BY PHYSICAL AND HISTOCHEMISTRY METHODS

    【Abstract】 Objective To explore a method to identify the sensory and motor fascicles in peri pheral nervetrunk. Methods Thirty Wistar rats were selected to obtain whole spine. The spinal gangl ion, its dorsal root and ventral root,and sciatic nerve were harvested, Annexin V and Agrin specificities were observed with Western blot. In the experimental group,anterior branch and posterior branch of spinal nerve, sciatic nerve, and its muscular branch and cutaneous branch were harvested from 15 rats to make the observation of immunohistochemistry. In the other 15 rats, first antibody was replaced by PBS as control group. Different nerve fascicles were studied with Micro Raman scattering technique in 16 12-month-old New Zealand rabbits. Results The Annexin V and Agrin were special substances of sensory and motor nerves respectively and can act as specific antigens for identifying different nerve fascicles. There were significant differences in the intensity and breadth of the peak of the spectral properties between motor and sensory fascicles at frequencies of 1 088, 1 276, 1 439, 1 579 and 1 659 cm-1 .The peak intensity ratios of 1 276 to 1 439 cm-1 were 0.95±0.06 in motor nerve fascicles and 1.17±0.08 in sensory fascicles, showing significant differences (P lt; 0.05). Conclusion The Micro Raman spectra is more effective than immunohistochemistry in identifying different nerve fascicles, and it possesses as feasibil ity for cl inical appl ication.

    Release date:2016-09-01 09:09 Export PDF Favorites Scan
  • 足跟慢性溃疡的修复

    目的 回顾分析外科治疗足跟慢性溃疡的临床资料、治疗方法及疗效。方法 1997年5月~2006年12月,收治足跟慢性溃疡患者23例。男20例,女3例;年龄18~79岁,平均45.6岁。病程1个月~7年。良性溃疡18例,恶性溃疡5例。溃疡创面2.5 cm×1.5 cm~10.5 cm×7.0 cm。患者予以局部扩创或溃疡扩大切除后,采用足底内侧皮瓣修复7例,带足背皮神经的足背皮瓣修复1例,小腿前外侧逆行岛状皮瓣修复4例,腓肠神经营养血管皮瓣修复11例,切取皮瓣4.0 cm×2.5 cm~18.0 cm×9.0 cm。供区游离植皮覆盖。结果 术后创面均Ⅰ期愈合。20例皮瓣完全成活,1例出现静脉危象,予以蒂部缝线拆除后成活;2例皮瓣远端部分坏死,经换药后愈合。供区植皮均成活,切口Ⅰ期愈合。21例获随访3个月~2年,平均11个月。皮瓣质地及外观良好,足底内侧皮瓣及足背皮瓣感觉恢复良好,小腿前外侧逆行岛状皮瓣及腓肠神经营养血管皮瓣痛温觉部分恢复。患足可正常负重,足跟溃疡未见复发。结论 足跟慢性溃疡以预防为主,创面应早期手术行皮瓣修复,以防止溃疡复发。

    Release date:2016-09-01 09:22 Export PDF Favorites Scan
  • Soft tissue calcifications and ossifications observed by means of panoramic radiography

    Soft tissue opacities are often found by chance during radiographic examinations, especially in panoramic radiography. Because of the diversity of locations and causes, it is easily overlooked by dentists and even radiologists. Even if abnormal calcification is detected, it is difficult to identify its category and clinical relevance. For some soft tissue opacities associated with high-risk diseases, misdiagnosis is likely to delay treatment. Through reviewing the literature and screening the panoramic images from the disease database of West China Hospital of Stomatology, Sichuan University, this review summarizes and classifies the soft tissue opacities appearing in panoramic images, and discusses the clinical correlation to provide the reference for diagnosis, treatment, and prevention of related diseases.

    Release date:2019-06-25 09:50 Export PDF Favorites Scan
  • Expressions of IL-17 and IL-27 in Liver Tissue of Hepatic Alveolar Echinococcosis

    ObjectiveTo detect expressions of interleukin-17 (IL-17) and interleukin-27 (IL-27) proteins in liver tissue of hepatic alveolar echinococcosis. MethodsThe edge liver tissues (from the lesion edge 0.5 cm) and the normal liver tissues (from the lesion edge 5 cm) of 20 patients with hepatic alveolar echinococcosis in the Affiliated Hospital of Qinghai University were collected and stored at-80℃ freezer. The immunohistochemical method was used to detect the expressions of IL-17 and IL-27 proteins in these two tissues. ResultThe positive rates of IL-17 and IL-27 protein expressions in the edge liver tissues were significantly higher than those in the normal liver tissues[IL-17:80.0% (16/20) versus 10.0% (2/20), χ2=12.36, P < 0.01; IL-27:85.0% (17/20) versus 20.0% (4/20), χ2=12.36, P < 0.01]. ConclusionHigh expressions of IL-17 and IL-27 protein in edge liver tissue might participate in progress of hepatic alveolar echinococcosis.

    Release date:2016-10-02 04:54 Export PDF Favorites Scan
  • Antibody microarray analysis of the tissue apoptosis factors in patients with hepatic alveolar echinococcosis

    Objective To detect and analize the expressions and it’s clinical significance of apoptosis factors in hepatic alveolar echinococcosis tissues by using antibody chip technology. Methods The liver tissue specimens (including the edge of lesions and normal liver tissues) of surgical resection of 6 patients with hepatic alveolar echinococcosis in Affiliated Hospital of Qinghai University were collected. The tissue protein was extracted and the level of apoptosis was detected by antibody chip technology. The data were analyzed by AAH-APO-G1 software. Results The expression levels of 5 kinds of apoptosis factors (Bad, Fas, IGFBP-3, P21 and XIAP) in the liver tissues of the marginal zone of hepatic alveolar echinococcosis were compared with that of the normal liver tissues, and the difference was statistically significant (P<0.05). The expression levels of Bad, Fas, IGFBP-3 and P21 were up-regulated, and the expression level of XIAP was down regulated. Conclusions Apoptosis-related factors play a role in the progression of the hepatic alveolar echinococcosis, there may be contact with the immune escape mechanisms, while promote apoptosis factor and inhibitory apoptosis factor that may exist the function imbalance, so more in-depth exploration the mechanism of apoptosis factors on hepatic alveolar echinococcosis in diagnosis and treatment have important significance.

    Release date:2017-04-18 03:08 Export PDF Favorites Scan
  • Literature review of the diagnosis and treatment of bone hydatid disease in China from 1975 to 2015

    Objective To analyze the clinical manifestations, diagnosis, treatment and prognosis of bone hydatid disease in China by literature review. Methods We searched the databases of China National Knowledge Infrastructure and Wanfang for case reports of bone hydatid disease published from 2000 to 2015 in China. Data were extracted by using a standardized form and a retrospective clinical analysis was performed. Results A total of 21 relevant literatures published from 2000 to 2015 were included, including 87 cases of bone hydatid disease treated from 1975 to 2015. The regional distribution of bone hydatid disease was mainly concentrated in the animal husbandry areas in China. In terms of diagnosis basis, imaging examination was mentioned in 54 cases (62.1%), laboratory examination was mentioned in 32 cases (36.8%), and pathologic examination was mentioned in 8 cases (9.2%), etc. Surgical treatment was the main treatment, and some treatments were combined with chemotherapy. The outcomes of bone hydatid disease were relatively poor. In the 44 cases whose outcomes were reported, 26 cases (59.1%) had recurrence, 18 cases were cured (40.9%), 10 cases (22.7%) underwent re-operation, and 2 cases (4.5%) died. Conclusions Bone hydatid disease is rare. Surgical treatment is still the main method for treating bone hydatid disease. The rate of recurrence of bone hydatidosis is relatively high, so it is very important to explore new methods for diagnosis and treatment of bone hydatid disease.

    Release date:2018-09-25 02:22 Export PDF Favorites Scan
  • Recombinant human bone morphogenetic protein 2/porous calcium phosphate cement/autologous bone and combination of platelet-rich plasma in repairing of large bone defects in rabbits by Masquelet technique

    Objective To investigate the optimal mixing ratio of recombinant human bone morphogenetic protein 2 (rhBMP-2) with porous calcium phosphate cement (PCPC) and autologous bone as bone grafting material for the repair of large bone defects using Masquelet technique. The effect of platelet-rich plasma (PRP) on the healing of bone defects was evaluated under the optimal ratio of mixed bone. Methods Fifty-four New Zealand White rabbits were taken to establish a 2 cm long bone defect model of the ulna and treated using the Masquelet technique. Two parts of the experiment were performed in the second phase of the Masquelet technique. First, 36 modeled experimental animals were randomly divided into 4 groups (n=9) according to the mass ratio of autologous bone and rhBMP-2/PCPC. Group A: autologous bone (100%); group B: 25% autologous bone+75% rhBMP-2/PCPC; group C: 50% autologous bone+50% rhBMP-2/PCPC; group D: 75% autologous bone+25% rhBMP-2/PCPC. The animals were executed at 4, 8, and 12 weeks postoperatively for general observation, imaging observation, histological observation (HE staining), alkaline phosphatase (ALP) activity assay, and biomechanical assay (three-point bending test) were performed to assess the osteogenic ability and to determine the optimal mixing ratio. Then, 18 modeled experimental animals were randomly divided into 2 groups (n=9). The control group was implanted with the optimal mixture ratio of autologous bone+rhBMP-2/PCPC, and the experimental group was implanted with the optimal mixture ratio of autologous bone+rhBMP-2/PCPC+autologous PRP. The same method was used to observe the above indexes at 4, 8, and 12 weeks postoperatively. Results The bone healing process from callus formation to the cortical connection at the defected gap could be observed in each group after operation; new bone formation, bridging with the host bone, and bone remodeling to normal bone density were observed on imaging observation; new woven bone, new capillaries, bone marrow cavity, and other structures were observed on histological observation. The ALP activity of each group gradually increased with time (P<0.05); the ALP activity of group A was significantly higher than that of the other 3 groups at each time point after operation, and of groups C and D than group B (P<0.05); there was no significant difference between groups C and D (P>0.05). Biomechanical assay showed that the maximum load in three-point bending test of each group increased gradually with time (P<0.05), and the maximum loads of groups A and D were significantly higher than that of groups B and C at each time point after operation (P<0.05), but there was no significant difference between groups A and D (P>0.05). According to the above tests, the optimal mixing ratio was 75% autogenous bone+25% rhBMP-2/PCPC. The process of new bone formation in the experimental group and the control group was observed by gross observation, imaging examination, and histological observation, and the ability of bone formation in the experimental group was better than that in the control group. The ALP activity and maximum load increased gradually with time in both groups (P<0.05); the ALP activity and maximum load in the experimental group were significantly higher than those in the control group at each time point after operation (P<0.05), and the maximum load in the experimental group was also significantly higher than that in group A at 12 weeks after operation (P<0.05). ConclusionIn the second phase of Masquelet technique, rhBMP-2/PCPC mixed with autologous bone to fill the bone defect can treat large bone defect of rabbit ulna, and it has the best osteogenic ability when the mixing ratio is 75% autologous bone+25% rhBMP-2/PCPC. The combination of PRP can improve the osteogenic ability of rhBMP-2/PCPC and autologous bone mixture.

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  • Retrospective Analysis of Echinococcosis Outside Liver in China

    ObjectiveTo summarize regional and body distributions, diagnosis, treatment, and prognosis of echinococcosis outside liver in China. MethodsThe published literatures about echinococcosis outside liver in China (not including Hong Kong, Macao and Taiwan regions) from 2000 to 2015 were searched in the databases of CNKI and Wanfang. Data were extracted by using a standardized form and a retrospective clinical analysis was performed. ResultsA total of 66 published literatures about echinococcosis outside liver and data of 884 cases reported were collected. The regional proportions of cases reported were different, five high regions were Xinjiang (68.73%), Tibet (8.77%), Ningxia (6.75%), Qinghai (6.41%), Gansu (5.62%). The organ distributions of cases reported were also different, five high organs were lung (61.09%), bone (9.95%), brain (9.73%), spleen (8.60%), and kidney (6.22%). The main clinical symptoms of patients with echinococcosis outside liver included general asymptoms and organ dysfunction, and the most common examinations were X-ray (30.77%), B ultrasound (7.47%),CT(17.43%), MR (1.59%), and laboratory (36.31%). The main therapy choice was operation (73.30%), and some patients were performed operation combined with drug therapy. ConclusionRegional distribution of echinococcosis outside liver is almost the same as total echinococcosis, and distributed more in organs rich in blood supply, its clinical diagnosis mainly depends on imaging and immunology examination, and operation is still the main therapy choice.

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  • 泡球蚴囊液对大鼠肝星状细胞TGF-β1、IL-6及TNF-α表达的影响

    目的观察泡球蚴囊液对大鼠肝星状细胞(HSC-T6)中转化生长因子β1(TGF-β1)、白细胞介素6(IL-6)及肿瘤坏死因子-α(TNF-α)表达的影响,以初步揭示泡型肝包虫病免疫调节作用的潜在机理。 方法以泡球蚴囊液中蛋白成分的浓度代表囊液浓度,分别以0、0.01、0.025、0.05、0.1、0.2、0.4、0.9、1.7、3.4、6.8及13.5 mg/mL的泡球蚴囊液干预大鼠HSC-T6细胞,作用24 h后收集各组细胞上清,采用酶联免疫吸附法检测上清中TGF-β1、IL-6及TNF-α的浓度。 结果以不同浓度泡球蚴囊液(0~13.5 mg/mL)干预后,HSC-T6细胞培养液上清中的TGF-β1浓度几乎不变,各浓度组间两两比较差异均无统计学意义(P>0.05)。当泡球蚴囊液浓度≤3.4 mg/mL时,上清中IL-6的浓度趋于平稳,各浓度组间两两比较差异均无统计学意义(P>0.05);当泡球蚴囊液浓度为6.8和13.5 mg/mL时,IL-6浓度较0 mg/mL组均升高,差异均有统计学意义(P<0.01)。当泡球蚴囊液浓度≤0.2 mg/mL时,上清中的TNF-α浓度趋于平稳,各浓度组间两两比较差异均无统计学意义(P>0.05);当泡球蚴囊液浓度为0.4 mg/mL时,TNF-α浓度达到最大,为0 mg/mL组的3.53倍(P<0.05);此后随浓度增高TNF-α浓度又逐渐降低,但仍高于0 mg/mL组(P<0.05)。 结论IL-6和TNF-α可能在肝星状细胞介导的泡型肝包虫病的纤维化和组织损伤中扮演重要角色,而TGF-β1的作用尚不确定。

    Release date:2016-12-21 03:35 Export PDF Favorites Scan
  • Short-term effectiveness of TiRobot combined with O-arm navigation system in minimally invasive treatment of hindfoot fracture

    Objective To investigate the short-term effectiveness of TiRobot combined with O-arm navigation system in the minimally invasive treatment of hindfoot fracture. Methods Between March 2019 and March 2021, 25 patients with hindfoot fractures were admitted. There were 14 males and 11 females, with an average age of 51.7 years (range, 19-76 years). The causes of injuries included falling from height in 17 cases and traffic accident in 8 cases. The interval between injury and operation was 1-3 days (mean, 2.1 days). There were 16 cases of calcaneus fracture, 7 cases of talus fracture, and 2 cases of calcaneus and talus fractures. According to Sanders classification criteria, the calcaneus fractures were classified as type Ⅱ in 10 cases and type Ⅲ in 8 cases; according to the Hawkins classification criteria, the talus fractures were classified as type Ⅱ in 4 cases and type Ⅲ in 5 cases. Preoperative American Orthopaedic Foot and Ankle Society (AOFAS) ankle-hindfoot score was 48.1±9.1. During operation, the fractures were fixed with the percutaneous cannulated screws with the assistance of the TiRobot combined with the O-arm navigation system. The operation time, hospital stay, and the occurrence of related complications were recorded. X-ray films were reviewed to evaluate the fracture healing and the occurrence of talus osteonecrosis, and the width, length, height, Böhler’s angle, and Gissane’s angle of the calcaneus were measured; AOFAS ankle-hindfoot score was used to evaluated the foot function. Results The operation time ranged from 47 to 71 minutes (mean, 60.5 minutes). The length of hospital stay ranged from 2 to 5 days (mean, 3.4 days). All incisions healed by first intention. All patients were followed up 12-24 months (mean, 17.3 months). One patient demonstrated hypoesthesia on the lateral side of foot after operation and recovered after symptomatic treatment. All fractures healed confirmed by X-ray films and the healing time ranged from 10 to 16 weeks (mean, 11.8 weeks). No talus osteonecrosis occurred during follow-up. There were significant differences in the width, length, height, Böhler’s angle, and Gissane’s angle of the calcaneus between pre-operation and at last follow-up (P<0.05). At last follow-up, AOFAS ankle-hindfoot score was 91.2±5.0, the difference was significant when compared with preoperative score (t=22.169, P<0.001). The results were excellent in 16 cases and good in 9 cases, with an excellent and good rate of 100%. Conclusion TiRobot combined with O-arm navigation system for minimally invasive treatment of hindfoot fractures can obtain the satisfactory short-term effectiveness, with the advantages of less surgical trauma, precise fixation, and fewer complications.

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