AIM: To investigate the application of deep optical coherence tomography(DRI-OCT)combined with IOL Master 500 in measuring choroidal thickness and axial length(AL)in pediatric myopic patients, and analyze the relationship between choroidal thickness and AL.METHODS: Prospective study. A total of 210 pediatric myopia patients(210 eyes)admitted between August 2021 and August 2024 were enrolled. Based on spherical equivalent(SE)measurements, they were categorized into a low myopia group(-3.00 D 0.05). Intraocular pressure, SE, AL, and choroidal thickness at different locations all showed significant differences(all P<0.001). Pearson correlation analysis revealed that AL negatively correlated with choroidal thickness(both P<0.001). The results of multiple linear regression analysis indicate that intraocular pressure, SE, and AL are factors influencing choroidal thickness(all P<0.001).CONCLUSION:DRI-OCT combined with IOL Master 500 is able to detect choroidal thickness and AL well, in addition, choroidal thickness closely correlated with intraocular pressure, SE and AL levels.

Objective: To investigate the role of body fat ratio in the evaluation of obstructive sleep apnea(OSA). Methods: A retrospective analysis was made on 174 cases (between November, 2017 and April, 2018 showed that) of sleep monitoring in the Department of Otorhinolaryngology in Peking University Third Hospital. The data included the gender, age, body fat rate, body mass index (BMI), neck circumference, and apnea-hypopnea index (AHI). The above data were analyzed by non parametric correlation analysis, receiver operating characterristic (ROC) curve analysis and multiple factor Logistic regression analysis to study the relationship between the gender,age,body fat rate,BMI,neck circumference and other indexes of the patients with AHI. Results: Nonparametric correlation analysis showed that the correlation from strong to weak to AHI among women was BMI (r=0.621, P<0.001),body fat rate (r=0.602, P<0.001), age (r=0.570, P<0.001), neck circumference (r=0.402, P=0.014), respectively. BMI (r=0.599, P<0.001), neck circumference (r=0.493, P<0.001), body fat rate (r=0.318, P<0.001), and age (r=0.256, P=0.003) among men. ROC curve analysis showed that the strong to weak index (area under curve,AUC) of the AHI>15/h among women was the body fat rate (AUC=0.884, P=0.001), BMI(AUC=0.810, P=0.008), neck circumference (AUC=0.759, P=0.027), age (AUC=0.750, P=0.033), and the male was BMI (AUC=0.765,P<0.001), neck circumference (AUC=0.720, P<0.001), age (AUC=0.634, P=0.008), and body fat rate (AUC=0.632, P=0.010), respectively. Multifactor Logistic regression analysis showed that the body fat rate (OR=1.704,95%CI=1.012-2.870) in women was an independent risk factor for AHI greater than 15/h; the age of male (OR=1. 044, 95%CI=1.005-1.085) and BMI (OR=1.285, 95%CI=1.056-1.562) were independent risk factors for AHI greater than 15/h. Conclusion Body fat rate can be used as a new indicator for predicting the severity of OSA,especially in adult female population. In adult female moderate to severe OSA patients (AHI>15/h), compared with BMI,neck circumference and age,the body fat rate has the greatest correlation with AHI. Compared with BMI,neck circumference and age,the body fat rate has a decisive role in predicting moderate to severe OSA (AHI>15/h).

Objective To investigate whether the sodium arsenite inhibiting proliferation of hepatocellar carcinoma(HCC) cells and having a relation with the expression of promyelocytic leukemia (PML) protein .Methods The immunohistochemistry , Western blot analysis ,immunofluorescence assay and quantitative PCR were used to examine the PML gene and protein expression in HCC tissue and cells .Results The immunohis to chemical staining showed that the PML protein was expressed in nucleus of well‐differentiated ,moderately differentiated and poorly differentiated HCC tissues randomly selected from 15 cases of HCC under‐going hepatic resection .Western blot analysis showed that PML protein was expressed at varying levels in all 24 HCC tissue sam‐ples ,HuH7 ,HepG2 ,Hep3B ,SMMC‐7721 and L02 cells .The immunofluorescence assay demonstrated that PML protein grains were found in the nucleis of the HuH7 ,HepG2 ,Hep3B and SMCC‐7721 cells ,in which HuH7 and Hep3B expressed more PML proteins than HepG2 and SMMC‐7721 cells .24 HCC tissue samples ,Hep3B ,HepG2 ,SMCC‐7721 and HuH7 cells all expressed PML gene .Sodium arsenite not only down‐regulated the PML protein expressed in HuH7 and primary HCC cells ,but also inhibited the HCC cell growth of HepG2 ,Hep3B ,HuH7 and SMMC‐7721 ,with the exposure time extension ,the inhibiting effect of sodium arsenite on HCC cells was enhanced .Conclusion Both HCC cell lines and tissues generally express ther PML protein and gene , PML protein may serve as the molecular basis for the direct targeting effects of arsenical agents .

BACKGROUND: Total hip arthroplasy is an effective method to treat hip disease caused by ankylosing spondylitis. Long-term fol ow-up studies have shown that there have been hip function problems after total hip arthroplasy, and it stil lacks of perfect rehabilitation programs. OBJECTIVE: To systematical y review the influential factors for dysfunction after total hip arthroplasy in ankylosing spondylitis patients. METHODS: The first and second authors retrieved PubMed and Sciencedirect Databases, CNKI, and Wanfang digital database for relevant articles published from January 1970 to July 2015. The key words were “arthroplasty, replacement, hip, spondylitis, ankylosing, function”. Final y, relevant articles were included. RESULTS AND CONCLUSION: A total of 40 articles were summarized, including 8 Chinese articles and 32 English articles. After total hip arthroplasy, hip function problems were mainly associated with patient’s factors, disease, surgery, prosthesis, postoperative recovery and postoperative complications. Avoiding above relevant factors can improve joint function after total hip arthroplasy for ankylosing spondylitis patients, and improve patient’s quality of life.

Based on the developing trend of laboratory medicine and the internal rules of discipline construction,series of research and reform practices in the curriculum system were put forward,including practice teaching,innovation education and instructional technology for laboratory medicine.An innovation talents training mode for laboratory medicine is gradually formed and innovative education is pushed on systematically,effectively and abidingly.The new mode has made periodical results and good prospects in cultivating students with innovative quality and ability.

BACKGROUND:Laminar flow operating room used in artificial joint replacement can improve the aseptic conditions and can effectively prevent the infections after joint replacement.
OBJECTIVE:To compare the number of colonies during artificial joint replacement in laminar flow operation room and traditional operation room.
METHODS:300 patients with artificial joint replacement in hundred-level laminar flow operation room and 300 patients with artificial joint replacement in traditional operation room were selected, and al the patients had no infection. Then 100 patients with artificial joint replacement were randomly selected from the hundred-level laminar flow operation room and traditional operation room respectively. The number of colonies in operation room of two groups was compared before and after replacement.
RESULTS AND CONCLUSION:There was no significant difference in the number of colonies between two groups before replacement, and the settling bacteria number of the artificial hip replacement patients in the hundred-level laminar flow operation room was significantly smal er than that in the traditional operation room (P<0.05). The results indicate that compared with the traditional operation room, the hundred-level laminar flow operation room for artificial joint replacement has higher safety and can effectively prevent infections after replacement.

BACKGROUND:The most effective method for the treatment of acetabular fracture is open reduction and internal fixation, however, this treatment for some special types of acetabular fracture cannot get satisfactory prognosis, and is prone to complications, such as traumatic coxarthrosis and avascular necrosis of femoral head. OBJECTIVE:To evaluate the curative effect of open reduction and internal fixation and total hip arthroplasty in the treatment of special acetabular fracture. METHODS:Twelve cases of acetabular fracture were included, including seven cases of traffic accident wound, three cases of crush injury, and two cases of fal ing injury. The type of bone fracture:two cases of posterior wal fracture, two cases of posterior column and posterior wal fracture, one case of T shaped fracture, five cases of transverse and posterior wal fracture, and two cases of acetabular roof sexual fracture. Complications:one case was femoral head centric dislocation, five cases were latter dislocation, and three cases were caput femoris fractures. Before injury, three cases had coxarthrosis, and two cases were avascular necrosis of femoral head. Al the cases were treated with open reduction internal fixation and total hip arthroplasty, of which nine cases were treated with biological prosthesis, and three cases were treated with bone cement prosthesis. The time from hospitalization to surgery was 3-15 days, and average was 6 days. The patients were fol owed-up once every 2 months in 1 year after replacement, and the Harris score was used to evaluate the hip function recovery. RESULTS AND CONCLUSION:No surgical site and deep wound infection, joint dislocation, lower limb deep vein thrombosis, and death were found in these 12 cases. Among them, 11 cases were fol owed-up for a longtime;the fol ow-up was lasted for 6-82 months. The acetabular fracture was healed at 6-16 months after reduction without prosthesis loosening and sinking. The hip function was evaluated during final fol ow-up according to the Harris score:excellent in eight cases, good in two cases, poor in one case, and the excellent and good rate was 91%. Open reduction internal fixation and one-stage total hip arthroplasty can avoid long-term bed, get out of bed as soon as possible, and reduce complications, thus reconstruct the hip joint painlessly and good functional y.

Objective To assess the value of tomographic ultrasound imaging (TUI) for prenatal analysis of the relative orientation of fetal heart and great arteries. Methods Volume datasets acquired from 12 patients of transposition of the great arteries (TGA) and 13 normal fetal heart were evaluated offline with TUI. The aortic valves (AV) and pulmonary valves (PV) were respectively showed on the two parallel slices. According to the pivot point in the middle of the PV in one slice, the relative orientation of the AV on another slices were analyzed. Results In the 12 patients of TGA confirmed postnatally, 7 were concomitant with single ventricle anomaly, AV was on the anterior-right orientation of the PV in 5, and was relatively on the anterior and anterior-left orientation in other 2 of them.In the remained 5 with seeming normal 4 chamber view, AV was found on the anterior-right of the PV in 3, and was relatively on the anterior and upright orientation.in other 2 patients. In 13 normal fetuses, TUI showed that all AV located on the posterior-right orientation to the PV. Conclusion TUI can provide detailed spatial information of the great arteries both in normal and abnormal fetal heart. It may be a convenient and veracious tool for prenatal exploring the morphology of the great arteries.