Objective To study the anatomical characteristics of sectional clivus region and to provide anatomical data for the operation of the clivus regoin.Methods Continuous thin sections(transverse position and coronal position)from two head specimens were performed with freezing milling technique.Observed the anatomical relationship and anatomical characteristics of the clivus region,and finished the three dimensional reconstruction based on the data of sections.Results Totally obtained 320 transverse sections and 232 coronary sections.The related structures were described in 4 typical sections,and three dimensional reconstruction of the clivus region were produced.Conclusion Combinationof section anatomy and three dimensional reconstruction can stereoscopically display the anatomical characters of the clivus re -gion.The three dimensional models could continuously and dynamically display the anatomic structures.

BACKGROUND: Topoisomerase II alpha (TOP2A) has been reported to play a crucial role in the tumorigenesis of various cancer types. However, the biological role of TOP2A in gallbladder cancer (GBC) remains unknown. The current study aimed to explore the function and potential mechanism of TOP2A in GBC. METHODS: Based on Gene Expression Profiling Interactive Analysis data, we found TOP2A was significantly up-regulated in GBC tissues and resulting in shorter overall survival. Quantitative real-time polymerase chain reaction and immunohistochemistry were conducted to detect the expression of TOP2A in 45 pairs of GBC tissues and adjacent non-tumor tissues. In vitro, cell proliferation, migration, and invasion ability were examined by cell counting kit-8 and transwell assay, respectively. Epithelial-mesenchymal transition (EMT) related and phosphatidylinositol 3-kinase/protein kinase B/mammalian target of rapamycin (PI3K/Akt/mTOR) pathway-related markers were measured by Western blotting. Xenograft model assay was performed to evaluate the effect of TOP2A in vivo. RESULTS: TOP2A was found up-regulated in GBC (tumor vs. normal, 12.62 vs. 0.34) and correlated with the late tumor node metastasis stage (P = 0.0032), present of lymph node metastasis (P = 0.0273), and poor prognosis in GBC patients (log-rank P = 0.028). In vitro and in vivo assays showed that knockdown of TOP2A notably inhibited cell proliferation, migration, invasion, EMT process, and tumor growth in GBC. In addition, TOP2A down-regulation significantly decreased the protein levels of phosphor (p)-PI3K, p-Akt, and p-mTOR. CONCLUSION Our study demonstrates that TOP2A was overexpressed in GBC and associated with poor prognosis in GBC patients. TOP2A promotes GBC cell proliferation, migration, invasion, EMT process, and tumor growth through activating PI3K/Akt/mTOR signaling pathway, and may serve as a novel prognostic biomarker and therapeutic target for GBC.

OBJECTIVE: To perform a review and data analysis of the pediatric projects funded by National Natural Science Foundation of China from 2009 to 2018, and to investigate the changes in key support areas, research interest, and research hotspots in pediatrics. METHODS: The database of National Natural Science Foundation of China was searched to screen out pediatric research projects in 2009-2018, and the changes in funding intensity and research direction were analyzed. RESULTS: From 2009 to 2018, a total of 1 017 pediatric projects were funded by National Natural Science Foundation of China, with 485 (47.69%) General Projects, 426 (41.89%) Youth Fund Projects, 73 (7.18%) Regional Research Programs, 16 (1.57%) Key Programs, 6 (0.59%) Outstanding Youth Fund Projects, 7 (0.69%) Overseas Programs, and 4 (0.39%) other programs. There was a seven-fold increase in the total amount of subsidies, which increased from 8.42 million yuan in 2009 to 66.25 million yuan in 2018. The projects with the Primary Discipline Code of reproductive system/perinatology/neonatology, nervous system and mental illness, or circulatory system received the highest amount of fund. CONCLUSIONS The support of pediatric projects by National Natural Science Foundation of China continues to increase in the past ten years, and the main types of projects are General Projects and Youth Fund Projects. Neonatology, nervous system/mental illness, and circulatory diseases are the main directions of funded projects.
Adolescent ; Child ; China ; Financial Management ; Foundations ; Humans ; Natural Science Disciplines ; Neonatology

Objective:To explore the risk factors of adjacent segment diseases (ASDis) after lumbar fusion, summarize the prevention strategies and provide reference for clinical treatment.Methods:All of 258 patients who underwent lumbar interbody fusion from March 2014 to March 2019 were retrospectively analyzed, including 95 males and 163 females, the age of whom was 61.8±8.4 years (range, 39-77 years). The patients were divided into ASDis group and non-ASDis group according to whether ASDis occurred at the follow-up of 24 months after operation. The patient's individual factors [gender, age, body mass index (BMI), main diagnosis, preoperative paraspinal muscle fatty degree, etc.] and surgical factors (operation type, fixed segment, fusion segment, etc.), sagittal parameters [lumbar lordosis (LL), pelvic incidence (PI), pelvic tilt (PT), sacral slope (SS), PI-LL] were recorded. After univariate analysis of potential risk factors, the factors with P<0.05 were substituted into logistic regression model for multivariate analysis to determine the risk factors of ASDis after lumbar fusion. Results:ASDis occurred in 24 patients after lumbar fusion, with an incidence of 9.3% (24/258); univariate analysis showed that age ≥ 60 years old, complicated with osteoporosis, preoperative fatty degree of paraspinal muscle (GCS grade≥3), PLIF operation, suspension fixation, total laminectomy and multi-segment fusion (≥ 3 segments) were the potential risk factors for ASDis after operation (P<0.05); Gender, education level, partner status, type of work, BMI, obesity (BMI≥24 kg/m 2) , smoking, use of bisphosphonates, concomitant lumbar spinal stenosis, lumbar lordosis angle, pelvic incidence angle, pelvic tilt angle, sacral slope angle, and PI-LL had no significant correlation with ASDis. Logistic regression analysis showed that age ≥ 60 years ( OR=5.63, 95% CI: 1.56, 20.29, P=0.008), preoperative paravertebral muscle fatty GCS ≥ 3 ( OR=4.82, 95% CI: 1.36, 17.13, P=0.015), combined with osteoporosis ( OR=14.04, 95% CI: 2.53, 77.79, P=0.002), PLIF ( OR=9.69, 95% CI: 1.91, 49.03, P=0.001), and multi-segment fixation ( OR=9.36, 95% CI: 1.77, 49.41, P=0.008) were the risk factors for ASDis after lumbar fusion; Incomplete laminectomy ( OR=0.09, 95% CI: 0.02, 0.37, P=0.001) and suspension fixation ( OR=0.16, 95% CI: 0.02, 0.94, P=0.042) were the protective factors of ASDis after lumbar fusion. Conclusion:The patients with age ≥ 60 years old, osteoporosis and preoperative paraspinal muscle fatty degree ≥ 3 grade GCS should be more careful in choosing the surgical methods, and try to choose transforaminal interbody fusion, posterolateral fusion, short segment fusion, decompression with preservation of vertebral lamina, suspension fixation and other surgical methods to reduce the incidence of postoperative ASDis.

OBJECTIVE: To investigate the application of tranexamic acid in the treatment of intertrochanteric fracture. METHODS: From January 2017 to October 2019, 100 patients with intertrochanteric fracture were randomly divided into observation group (48 cases) and control group(52 cases). All patients received the same surgical treatment. The control group was given tranexamic acid 20 minutes before operation, and 15 mg/kg diluted in 250 ml sodium chloride injection, intravenous drip;the observation group was given tranexamic acid 0.5 g dissolved in 20 ml normal saline injected into femoral bone marrow cavity for local treatment on the basis of the control group. The blood loss, operation time and postoperative hospital stay were compared between two groups. Hematocrit, hemoglobin, D-dimer and fibrinogen levels were analyzed before and after operation, and the incidence of thrombotic complications was observed. RESULTS: The total blood loss, dominant blood loss, hidden blood loss and postoperative drainage volume of the observation group were significantly lower than those of the control group ( CONCLUSION Tranexamic acid combined with systemic and local application has important clinical significance in reducing perioperative blood lossand blood cell loss in patients with intertrochanteric fracture, and has good safety.
Antifibrinolytic Agents/therapeutic use* ; Blood Loss, Surgical ; Femur ; Hip Fractures/surgery* ; Humans ; Postoperative Hemorrhage ; Tranexamic Acid ; Treatment Outcome

Objective:To explore clinical value of nucleic acid detection for hepatitis B virus (HBV) screening in hospitalized patients.Methods:This cross-sectional study collected and analyzed plasma samples from patients admitted to 10 domestic medical institutions from July 2021 to December 2021. Serological immunoassay and nucleic acid screening were used to simultaneously detect hepatitis B markers such as hepatitis B surface antigen (HBsAg), hepatitis B surface antibody (HBsAb), hepatitis B e Antigen (HBeAg), hepatitis B e antibody (HBeAb), hepatitis B core antibody (HBcAb),and HBV DNA. Statistical analysis was performed on the serology, nucleic acid test results and clinical information of the patients.Results:Of the 8 655 collected samples, HBsAg was positive in 216 (2.50%) samples,HBV DNA was positive in 238 (2.75%) samples ( P>0.05); 210 (2.43%) samples were positive for both HBsAg and HBV DNA, 28 (0.32%) were HBsAg negative and HBV DNA positive, 6 cases (0.07%) were HBsAg positive and HBV DNA negative. Conclusion:These results indicate that the HBV DNA testing is equally effective as hepatitis B virus serological detection for hepatitis B virus screening in hospitalized patients.

The individual with the deficiency of CD36 antigen on platelet displayed the risk of anti-CD36 immune reaction induced by transfusion, which is one of the reasons for platelet transfusion refractoriness (PTR). This study was purposed to detect the expression level of CD36 antigen on platelet by flow cytometry among apheresis platelet donors of Hangzhou area, and the frequency of CD36 deficiency was analyzed. Platelet-rich plasma (PRP) was separated from fresh anticoagulant whole blood by centrifugation, then the platelets were washed and adjusted to 1×10(6). The platelets were incubated with FITC-labeled CD36 and PE-labeled CD41 monoclonal antibodies, then the expression level of CD36 was detected by flow cytometry. The CD36 expression on monocytes for the samples of CD36-deficiency on the platelets was further analyzed. The results showed that 7 samples with CD36 antigen deficiency were found in 192 apheresis platelet donors. The frequency of CD36 deficiency was 3.6% and all of them were typeII deficiency. The significant difference of CD36 antigen expression was observed in the platelet donors of Hangzhou population, among them 59 individuals with low expressed CD36 antigen and 126 individuals with highly expressed CD36 antigen were found according to the geometric mean fluorescence intensity. It is concluded that the CD36 antigen deficient phenotype existed in the population, these data will provide the information for research of the CD36 antigen distribution and help to solve the platelet transfusion refractoriness.
Blood Platelet Disorders ; diagnosis ; Blood Platelets ; metabolism ; CD36 Antigens ; metabolism ; Flow Cytometry ; methods ; Genetic Diseases, Inborn ; diagnosis ; Humans

BACKGROUNDThere are limited data on longer-term outcomes (>5 years) for patients with unprotected left main coronary artery (ULMCA) disease who underwent percutaneous coronary intervention (PCI) in the drug-eluting stents (DES) era. This study aimed at comparing the long-term (>5 years) outcomes of patients with ULMCA disease underwent PCI with DES and coronary artery bypass grafting (CABG) and the predictors of adverse events.

METHODSAll consecutive patients with ULMCA disease treated with DES implantation versus CABG in our center, between January 2003 and July 2009, were screened for analyzing. A propensity score analysis was carried out to adjust for potential confounding between the two groups.

RESULTSNine hundred and twenty-two patients with ULMCA disease were enrolled for the analyses (DES = 465 vs. CABG = 457). During the median follow-up of 7.1 years (interquartile range 5.3-8.2 years), no difference was found between PCI and CABG in the occurrence of death (P = 0.282) and the composite endpoint of cardiac death, myocardial infarction (MI) and stroke (P = 0.294). Rates of major adverse cardiac and cerebrovascular events were significantly higher in the PCI group (P = 0.014) in large part because of the significantly higher rate of repeat revascularization (P < 0.001). PCI was correlated with the lower occurrence of stroke (P = 0.004). Multivariate analysis showed ejection fraction (EF) (P = 0.012), creatinine (P = 0.016), and prior stroke (P = 0.031) were independent predictors of the composite endpoint of cardiac death, MI, and stroke in the DES group, while age (P = 0.026) and EF (P = 0.002) were independent predictors in the CABG group.

CONCLUSIONSDuring a median follow-up of 7.1 years, there was no difference in the rate of death between PCI with DES implantation and CABG in ULMCA lesions in the patient cohort. CABG group was observed to have significantly lower rates of repeat revascularization but higher stroke rates compared with PCI. EF, creatinine, and prior stroke were independent predictors of the composite endpoint of cardiac death, MI, and stroke in the DES group, while age and EF were independent predictors in the CABG group.

Aged ; Coronary Artery Bypass ; Coronary Artery Disease ; physiopathology ; therapy ; Drug-Eluting Stents ; Female ; Humans ; Male ; Middle Aged ; Percutaneous Coronary Intervention ; Stroke Volume

A sensing system based on AuNP-AuNP-UCNP triple structure for efficient detection of dual targets was constructed. In the preparation of triple structure, the gold nanoparticles (AuNPs) and upconversion nanoparticles (NaYF4: Yb, Er, Gd, UCNPs) were synthesized and surface modified. Then the two nanoparticles and their aptamers were connected to form two kinds of optical fluorescent probes. A nucleic acid sequence that matches with two aptamers was designed, rendering the probes to get close based on the principle of complementary base pairing. On the basis of this, a sensing system with a triple structure was prepared,and its connecting effect was characterized by TEM. With this system, dual targets of bisphenol A and estradiol were efficiently and conveniently detected through quantitative determination by fluorescence and UV spectrophotometer. At reaction temperature of 30℃ and pH=7.8,this method exhibited good linear range for determination of bisphenol A and estradiol from 2 ng/mL to 200 ng/mL and from 10 ng/mL to 150 ng/mL, with limits of detection of 0.2 ng/mL and 0.5 ng/mL, respectively. This sensing system with the triple structure owned better specificity to structural and functional analogues, and showed good repeatability and stability. What's more,this sensing system was applied in actual water detection,with the recoveries between 86.1% and 107. 4%, and the relative standard deviation below 6. 8%. This method showed promising applications in other environmental estrogens in water samples.

Adolescent ; Busulfan ; therapeutic use ; Child ; Child, Preschool ; Cyclophosphamide ; therapeutic use ; Cyclosporine ; therapeutic use ; Female ; Hematopoietic Stem Cell Transplantation ; methods ; Humans ; Infant ; Leukemia ; drug therapy ; mortality ; therapy ; Leukemia, Myeloid, Acute ; drug therapy ; mortality ; therapy ; Male ; Mycophenolic Acid ; therapeutic use ; Precursor Cell Lymphoblastic Leukemia-Lymphoma ; drug therapy ; mortality ; therapy ; Retrospective Studies ; Treatment Outcome