BACKGROUND: Appropriate direction and angle of traction for the vertebral artery type cervical spondylosis(CSA)make significant effect.Selective angiography is recognized as"gold standard"to diagnose the vascular disease.Although magnetic resonance angiography as a non-invasive examination,there exist shortcomings such as a longer time checking,vulnerable to man-made factors,a certain aggressive feature.OBJECTIVE: Through the use of color Doppler flow imaging(CDFI)and transcranial Doppler sonography(TCD)adding the test of turning neck,to analyze the change of blood current parameter before and after the tractions from different directions and angles.METHODS: 240 cases suffering CSA were selected and divided into groups according to anatomy angle of lesion parts(upper cervical segments,lower cervical segments,mixed type)and traction mode,angel(anteversion sitting position 1°-10°,11°-20°,21°-30° groups,posterior extension sitting position 1°-10°,11°-20°,21°-30° groups,neutral position sitting position group).Local massage served as control group.The indexes of vertebral artery of neck part including inner diameter(D)of narrowest location,peak systolic velocity and average velocity of blood were measured by CDFI adding the test of turning neck.The indexes of left vertebral artery,right vertebral artery and basiiar artery including peak velocity(Vp)of period of contraction and mean velocity(Vm)of blood were measured by TCD adding the test of turning neck.RESULTS AND CONCLUSION: ①We determined vertebral artery type of cervical spondylosis on the base of anatomic site. On the basis of diseased region,we divided cervical syndrome into 3 types.They were superior part(C1-C3),inferior part (C4-C6) and commixture.it offers clinical guidance for traction therapy from spondylous morphous and mechanics.② We determined the gbest angle of traction.The therapeutic efficacy in posterior extension sitting position occupying 11-20～was better in upper hind neck;the therapeutic efficacy in anteversion sitting position occupying 11-20° was better in inferior neck; the therapeutic efficacy in anteversion sitting position occupying 1-10° was better in neutral position sitting position.③ We knew that CDFI and TCD are the convenient,non-invasive,safe and reduplicative methods to guide traction therapy in vertebral artery type of cervical spondylosis.

Objective To research the jugular foramen,internal auditory pore (IAP)and the turning point between its components by imageological methods and to provide theoretical basis for retrosigmoid approach in the operation of acoustic neurinoma.Methods The skulls of 100 volunteers were scanned to get the final result with thin-section computed tomographic image. High-resolution spiral CT multiplane reformation was used to reform images that were parallel to the Frankfort horizontal plane to measure the distance between the turning point of retrosigmoid (A),the edge of jugular foramen(B)and the lower edge of the internal auditory canal(C)(denoted AC,AB,BC) and the shortest distance from the jugular foramen to AC.The angles between AC,AB and sagittal axis(α,β) were measured.Results The distance of AC was (44.94 ± 3.84)mm,the distance of AB was (43.68 ± 4.56)mm.The distance of BC was (6.15 ±2.04)mm,and the shortest distance between jugular foramen and AC was (5.21±0.23)mm.The angleαwas measured as (39.50±4.74)°,and the angleβwas measured as (46.35± 5.51)°.Conclusion The research measure the distance and angle between entry points and landmarks of retrosigmoid approach and the safe distance.

Objective To explore the levels of urine iodine in mothers and urine iodine and blood thyroid-stimulating hormone (TSH) in their neonates, and the correlations. Methods A total of 695 pairs of mothers and their neonates were included. Urine sample of both mothers and newborns were collected and the levels of urine iodine were detected. Heel blood sample of newborns were collected and the levels of TSH were detected. Results The median urine iodine level in 695 mothers was 212 . 9μg/L, among whom 163 case ( 34 . 39%) were iodine deifcient (?5 mIU/L in neonates whose mother were iodine deifcient or excessive were higher than those in neonates whose mother were iodine adequate or more than adequate, and the difference was statistically signiifcant (P

Objective: The purpose of this study is to analyze the nasal morphological characteristics in Chinese adult, of Han nationality, by the measurements in sagittal plan and the proportionality between nose and facial structures, in order to provide aesthetic references for rhinoplasty, and individual surgical planning. Methods: During 2017 November to December, 258 healthy Han Youth volunteers were included. Three-dimensional (3D) models of the facial characteristic information were collected using Artec 3D scanner, by standardized procedures. The nasal and facial distances and angulations were measured, based on predesigned facial landmarks. Thereafter, the proportions of above measurements were calculated. Results: There was no significant difference between genders in absolute prominence. As for relative prominence, male nose is more prominent, resulted in a more stereoscopic facial profile. The nasal basal plane of both male and female, was more anterior than the infraorbital points, with 7% of the absolute degree of the infraorbital points. The range of the angle between the nasal basal plane and coronal plane was 2-4 degrees. Conclusions This study sets a database for the external nasal characteristics of the young adult in Chinese Han nationality, which could provide quantitative references for preoperative evaluation and individually surgical planning.

Objective To investigate the discriminator value of Han Chinese first morning urine albumin creatinine ratio (ACR) for determining the microalbuminuria. Methods A total of 1056 participants (494 males and 562 females) were selected from epidemiologic study of the metabolic syndrome and chronic kidney disease in Pinggu district, Beijing. Eight-hour overnight urinary albumin excretion (UAE) was regarded as the gold standard for defining the albuminuria,and the ROC curve analysis was used to determine the ACR discriminator value for microalbuminuria. Results (1)Microalbuminuria was found in 12.5% of participants,macroalbuminuria in 1.7%. (2)The ACR discriminator value for microalbuminuria by ROC curve analysis was 1.95 g/mol (sensitivity 97.6% and specitivity 88.6%) for men, 3.62 g/mol(sensitivity 83.8% and specitivity 89.1%) for women, 2.78 g/mol (sensitivity 88.7% and specitivity 85.9%)for overall. The upper boundary of microalbuminuria by ROC curve analysis was 22.59 g/mol (sensitivity 100.0% and specitivity 98.8%) . (3)The inter-rater agreement of the result in this study showed that sensitivity was 91.3% and specitivity was 88.2%, positive likelihood ratio was 7.56 and negative likelihood ratio was 0.10, positive predictive value was 56.9% and negative predictive value was 98.4%. Conclusions The ACR discriminator value for determining microalbuminuria is obviously higher in women than that in men, and is higher than recommendation of international guidelines. The result by ROC curve analysis has better sensitivity and specitivity.

Objective To investigate the relationship between the urinary albumin excretion (UAE) and serum uric acid in general population. Methods The study participants were derived from the epidemiological study on the association of metabolic syndrome and chronic kidney disease (CKD) in Pinggu district, Beijing. A total of 992 participants (463 men and 529 women) aged from 30 to 75 years were enrolled in this study. For each participant, UAE, serum uric acid, serum creatinine, and serum lipids were detected and other potential risk factors for CKD were surveyed. Results ( 1 ) The frequencies of microalbuminuria, macroalbuminuria and hyperuricemia were 12.9% , 1.8% and 4.3% respectively. The persons with hyperuricemia had significantly higher frequency of albuminuria than those without hyperuricemia (37. 2% vs 13. 7% , P ＜0. 01). (2) The participants were divided according to the quartiles (25% , 50% , 75% ) of serum uric acid level, and the frequencies of albuminuria in males were 13. 2% , 13. 9% , 17. 2% and 25.4% , while those in females were 8. 4% , 6. 2% , 9. 6% and 24. 8%. ( 3 ) Multivariate logistic regression analysis showed, hyperuricemia was significantly associated with albuminuria in females (OR =2. 31, 95% CI 1. 15-4. 68; P=0.02), but not in males. If the persons with reduced renal function were excluded, similar result still could be gained. Conclusions The prevalence of albuminuria increases gradually with uric acid elevation. Serum uric acid is an independent risk factor of elevated UAE, especially in females.

Objective To explore the feasibility of our method on assessing the three-dimensional facial morphological features based on three-dimensional surface imaging techniques.Methods According to the admission criteria,three-dimensional facial images of 34 attractive young Chinese women and 172 healthy reference young women were selected from the three-dimensional facial images database of our department.For those images,anthropometric facial measurements including facial height,width,the degree of convexity and concavity were computed using three-dimensional surface imaging techniques combined with three-dimensional coordinate system.The variance between attractive group and reference group was analyzed and the facial morphological features of each group were preliminarily summarized.Results Both groups met the criteria of mesoprosopy,not the "vertical facial trisection and rule of fifths".The attractive group had a relatively narrow anterior facial frame,a more rounded and full upper face compared with the reference group.They also had smaller intercan thai width compared with the reference group.Moreover,the attractive group showed more prominent nose,more full and prominent medial cheek.In addition,the attractive group shared less protruded upper lips and less retruded chin compared with the reference group.Conclusions Assessing facial morphology using three-dimensional surface imaging techniques is a convenient and feasible method.The evaluation of sagittal facial convexity and concavity is an indispensable part of facial morphology features assessment.

The standardized training of resident doctors is the main form of medical education after graduation. The standardization training of ultrasound doctors was guided by post competence, and was explored from the aspects, such as training target, teaching management, teaching method, teaching mode, and examination means. In this study, we adhered to the tutor responsibility system, and horizontal multi-module and vertical step-by-step teaching modes, made study plans according to local conditions, and improved the assessment system, so as to build a standardized and practical training system for ultrasound residents.

Animals ; Bone Morphogenetic Protein 4 ; Cardiovascular Diseases ; Endothelial Cells ; Fibroblasts ; Humans ; In Vitro Techniques ; Induced Pluripotent Stem Cells ; Lipoproteins ; Mesoderm ; Methods ; Mice ; Models, Animal ; Pluripotent Stem Cells ; Swine

Regenerative therapy holds great promise in the development of cures of some untreatable diseases such as cardiovascular diseases, and pluripotent stem cells (PSCs) including induced PSCs (iPSCs) are the most important regenerative seed cells. Recently, differentiation of human PSCs into functional tissues and cells in vitro has been widely reported. However, although porcine reports are rare they are quite essential, as the pig is an important animal model for the in vitro generation of human organs. In this study, we reprogramed porcine embryonic fibroblasts into porcine iPSCs (piPSCs), and differentiated them into cluster of differentiation 31 (CD31)-positive endothelial cells (ECs) (piPSC-derived ECs, piPS-ECs) using an optimized single-layer culture method. During differentiation, we observed that a combination of GSK3β inhibitor (CHIR99021) and bone morphogenetic protein 4 (BMP4) promoted mesodermal differentiation, resulting in higher proportions of CD31-positive cells than those from separate CHIR99021 or BMP4 treatment. Importantly, the piPS-ECs showed comparable morphological and functional properties to immortalized porcine aortic ECs, which are capable of taking up low-density lipoprotein and forming network structures on Matrigel. Our study, which is the first trial on a species other than human and mouse, has provided an optimized single-layer culture method for obtaining ECs from porcine PSCs. Our approach can be beneficial when evaluating autologous EC transplantation in pig models.