ObjectiveTo discuss the influence on diagn osing of femoral vein reflux by using the different ultrasound Doppler probing points. MethodsUsing pulse wave(PW) and color Doppler flow imaging, 134 femoral veins in 67 cases of lower limb varicosity were detected at 3 different probing points to check up the deep venous reflux after Valsava maneuver. The ultrasonographic data were compared with the results of venous DSA and operation to analyze the influence on diagnosis. ResultsThe reflux data obtained from the upper point of superficial femoral vein was most correlative with the results of DSA and operation. ConclusionsThe PW is a satisfactory technique in diagnosing the femoral reflux, and the upper point of superficial femoral vein is a most reasonable probing point.

Objective To compare the clinical treatment effect of triamcinolone acetonide and compound betamethasone in treating humeral external epicondylitis.Methods Eighty patients with humeral external epicondylitis were selected,87 sides participated in this clinical research,and divided into the triamcinolone acetonide blocking group(40 cases,43 sides) and compound betamethasone blocking group (40 cases,44 sides).Then the two groups received triamcinolone acetonide or compound betamethasone blocking therapy respectively.The clinical treatment effects were observed and evaluated.Results The Visual Analogue Scale (VAS) score after treatment in the triamcinolone acetonide group and compound betamethasone group was obviously decreased compared with before treatment (P＜0.01),the Activities of Daily Living(ADL)score was obviously increased (P＜0.01);The difference value (improvement degree) of VAS score before and after treatment in the compound betamethasone group was obviously increased compared with the triamcinolone acetonide group (P＜0.01).Conclusion Both triamcinolone acetonide and compound betamethasone blocking treatment are effective on humeral external epicondylitis,but the curative effect of compound betamethasone is superior to that of triamcinolone acetonide.

BACKGROUND: Nel-like type 1 molecule (Nell-1) is a secreted glycoprotein that has been proven both in vitro and in vivo to be a potent osteoinductive factor that effectively promotes bone growth. Furthermore, it has been shown to repress adipogenic differentiation and inflammation. OBJECTIVE: To review the current research progress of Nell-1 in bone tissue engineering. METHODS: PubMed database was searched for relevant articles published from January 1996 to June 2019. Search words were “Nell-1; bone regeneration and repair; regulatory factor; signal path; bone morphogenetic protein; osteoporosis; marrow derived mesenchymal stem cells.” After removal of repetitive studies and inconsistent literature, 61 articles were finally analyzed. RESULTS AND CONCLUSION: Nell-1 has been proved to be a factor that can effectively promote bone tissue growth. Local application of Nell-1 has a good effect on the growth of long bone, spine and cartilage as well as cranial suture closure. Nell-1 is a new growth factor that has relatively simple bioeffects, so it has better biosafety and higher accuracy relative to the other bone growth factors. Nell-1 can synergize with other osteogenic factors such as bone morphogenetic proteins 2, 9. Nell-1 inhibits inflammatory reaction and lipogenesis induced by bone morphogenetic protein 2 and promotes osteogenesis. This provides a theoretical basis for the combination of Nell-1 and bone morphogenetic protein 2 to improve the clinical safety and efficacy in bone regeneration.

AIM: To improve the prevent efficacy of peptide p277 in autoimmune diabetes. METHODS: The recombinant expression plasmid pET28-Hsp65-6×p277 was constructed by inserting 6×p277 which were amplified by PCR into the vector pET28-Hsp65. The plasmid pET28-Hsp65-6×p277 was transformed into E.coli BL21 (DE3) and the fusion protein (Hsp65-6×p277) was expressed effectively as soluble protein after inducing by lactose. The fusion protein was purified and then used to immunize 4-week old female NOD mice with three times of i.n. inoculations in the absence of adjuvants. Serum samples from the immunized mice were collected at monthly interval. The concentrations of blood glucose and antibodies were measured by automatic analyzer. RESULTS: Administration with the Hsp65-6×p277 to NOD mice could prevent the development of diabetes. CONCLUSION: The fusion protein Hsp65-6×p277 might be further developed to a vaccine against insulin-dependent diabetes mellitus.

ObjectiveTo investigate the value of ultrasound in diagnosis and differential diagnosis of uterine arteriovenous fistula (UAF).MethodsUltrasound results of 12 patients with UAF were analyzed retrospectively,and were compared with uterine artery angiography.ResultsUAF showed uneven echo signals of uterine muscle wall near endometrium or cesarean section incision and irregular echo-free zone on ultrasonographies,the typical case of which displayed “honeycomblike” change.Color Doppler ultrasound showed rich blood flow in local area and lake-like or multicolored mosaic change.Spectral Doppler waveform shape was characterized as high-speed low resistance.The ultrasonographic results of UAF were consistent with those of uterine artery angiography.ConclusionUltrasonography combined with uterine artery angiography contributes to the diagnosis of UAF.

Objective To construct a genetically-stable double auxotrophic,in which the uracil and leucine were mutated,using the Candida parapolymorpha ATCC26012 as materials.Methods Based on the physical and genetic engineering methods,the chromosome of the C.parapolymorpha strain was modified,where the ura3 and leu2 genes were directly mutated,to obtain the uracil and leucine double auxotrophic strain.Then the constructed strain was identified by the analysis of its biological properties,such as genetic stability,the change of the genes,and the physiologic and biochemical characteristics.Results The uracil and leucine double auxotrophic strain is obtained by screening.The biological identification results show that the obtained strain is genetically stable and the targeted genes are directly altered.In addition,the physiologic and biochemical analyses indicate that the auxotrophic can utilize various kinds of carbon and nitrogen nutrient sources,and its growth is good.Conclusion The successful construction of double auxotrophic mutant strains facilitated the genetic studies on C.parapolymorpha to meet various investigational purposes.Moreover,the constructed auxotrophic strains can be applied as advantageous host cells to express multiple proteins/antigens simultaneously,which is of great significance in the development of vaccines.

Pancreatic cancer is a highly malignant, fast progressive digestive system neoplasm with poor prognosis, and the incidence has increased significantly in the recent years. The treatment mode of pancreatic cancer has been transformed from surgery-first approach to multidisciplinary approach including surgery, chemotherapy, radiotherapy and other comprehensive treatment modalities, accompanying with significant improvement in clinical efficacy. During the last decade, the molecular mechanism of pancreatic cancer has been explored in depth. Indeed, we had a clearer understanding of the disease, which provides clues for translation of basic research into clinical practice. This review summarized recent high quality studies on pancreatic cancer including pathogenic factor, advances in basic research, and clinical treatment.

Recently, microRNAs (miRNAs) have been shown to be involved in multiple biological pathways that can influence tumor progression and metastasis and they can serve as prognostic biomarkers in many cancers. The present study examined the prognostic significance of miR-215 in cervical cancer. The paraffin-embedded paired cervical scrape samples and tumor tissue samples from 302 patients with stage II cervical cancer were detected for the expression of miR-215 by using qRT-PCR. A miR-215-based classifier was established by using the Cox regression model. The prognostic and predictive accuracy of this classifier was determined in both the internal testing group of 138 patients, and the external independent group of 280 patients. Moreover, cervical cancer HeLa cells overexpressing miR-215 (HeLa-miR-215) were constructed and subcutaneously injected into the nude mice to examine the effect of miR-215 on tumor growth and metastasis in vivo. The results showed that the expression level of miR-215 was significantly higher in cervical cancer tissues than in paired normal tissues (P<0.0001). When patients were classified into high- and low-risk cancer progression groups according to miR-215 level, the 5-year disease-free survival in high- and low-risk groups were 43% (95% CI: 32.1-51.6) and 67% (95% CI: 48.6-77.3) (hazard ratio [HR] 2.02, 95% CI: 1.16-3.52; P=0.013) respectively. Moreover, the expression level of miR-215 was negatively associated with survival rate in patients at TNM stage T3 (HR: 3.317; 95% CI: 1.18-5.14, P=0.017) and TNM stage T4 (HR: 3.48; 95% CI: 1.49-4.45, P=0.008). Tumor volume in nude mice injected with HeLa-miR-215 cells was significantly larger than that in mice injected with control HeLa cells. It was concluded that the expression level of miR-215 is associated with cervical tumor progression and worse survival rate, suggesting that it may serve as a potential prognostic marker to identify patients at higher risk of recurrence.

Humans ; Lung ; pathology ; Physical Examination ; Pneumoconiosis ; diagnosis ; Thoracotomy