Objective To investigate the expression of differential genes in testicular tissue of patients with obstructive and non-ob-structive azoospermia by bioinformatics,and provide new markers for the diagnosis of non-obstructive azoospermia(NOA).Methods The microarray data of azoospermia related genes(GSE45885 and GSE9210)were downloaded from the gene expression comprehensive database(GEO)and analyzed online by GEO2R,and the NOA related differentially expressed genes(DEGs)were obtained.The common DEGs were determined by using Wayne's intersection.GO annotation and KEGG enrichment analysis of DEGs were carried out by using R software.The DEGs-related protein interaction network(PPI)was constructed with STRING.Then,the most significant Hub gene of NOA was screened out by Cytoscape software and visualization was performed.The diagnostic value of Hub gene for NOA was estimated by the receiver operating characteristics(ROC)curve and verified in GSE145467 data set.Results A total of 83 DEGs were obtained,of which 78 were down-regulated and 5 were up-regulated.GO enrichment analysis showed that DEGs was involved in biological processes(BP),including the development and differentiation of sperm cells,development of germ cells,assembly of motor cilia,etc.Cell composition(CC)mainly included sperm flagella,motor cilia,acrosome vesicles,spermatogenic nuclei,etc.Molecular function(MF)mainly included structural components,protein binding,heat shock protein binding and so on,which endowed com-pressive strength for extracellular matrix.KEGG-related pathways were involved in longevity regulation pathways,cell cycle and apopto-sis,and meiosis of oocytes in multiple species.The five Hub genes closely related to NOA,including SPAG5,CCNB2,AURKC,NCAPH and PTTG1,were screened by PPI network.The ROC curve showed that all the five Hub genes were potential genetic markers of NOA.Conclusion SPAG5,CCNB2,AURKC,NCAPH and PTTG1 genes may play the key role in the development of NOA and may be used as the new biomarkers for NOA.

Objective:To extract and summarize the best evidence of early ambulation after anterior cervical surgery, so as to provide practical basis for early ambulation of clinical patients.Methods:The research questions were proposed based on the population, intervention, professional, outcome, setting and type of evidence (PIPOST) model. According to the "6S" model, the clinical guidelines, expert consensus, clinical decision-making, evidence summary, systematic reviews and randomized controlled trials related to "early postoperative activities of patients undergoing anterior cervical surgery" in databases such as UpToDate, British Medical Journal (BMJ) Best Practice website, Cochrane Library, China National Knowledge Infrastructure and WanFang Data were systematically retrieved. The retrieval time was from the establishment of the database to February 1, 2022. Two researchers independently evaluated the quality of the articles, and extracted and integrated the evidence of the articles meeting the quality standards.Results:A total of 10 articles were included, including two guidelines, three expert consensus, three systematic reviews, and two randomized controlled trials. It is summarized into 28 pieces of evidence and 7 dimensions, including multidisciplinary team cooperation, optimization of preoperative health education, preparation before ambulation, content of ambulation, multimodal analgesia management, nausea and vomiting management, and safety management of ambulation.Conclusions:The evidence included in this study provides a series of information for early ambulation after anterior cervical surgery. The medical and nursing staff should combine the evidence with the actual clinical situation, consider the value and expectation of the patient, comprehensively and individually evaluate the patient, and then make an early ambulation plan.

OBJECTIVE: To analyze the (CGG)n repeats of FMR1 gene among patients with unexplained mental retardation. METHODS: For 201 patients with unexplained mental retardation, the (CGG)n repeats of the FMR1 gene were analyzed by PCR and FragilEase RESULTS: For the 201 patients with unexplained mental retardation, 15 were identified with full mutations of the FMR1 gene. The prevalence of fragile X syndrome (FXS) in patients with unexplained mental retardation was determined as 7.5% (15/201). Prenatal diagnosis was provided for 6 pregnant women with pre- or full mutations. Analysis revealed that women with mental retardation and full FMR1 mutations exhibited a skewed XCI pattern with primary expression of the X chromosome carrying the mutant allele. CONCLUSION FXS has a high incidence among patients with unexplained mental retardation. Analysis of FMR1 gene (CGG)n repeats in patients with unexplained mental retardation can facilitate genetic counseling and prenatal diagnosis for their families. FMR1 gene (CGG)n repeats screening should be recommended for patients with unexplained mental retardation.
Female ; Fragile X Mental Retardation Protein/genetics* ; Fragile X Syndrome/genetics* ; Humans ; Intellectual Disability/genetics* ; Mutation ; Pregnancy ; Prenatal Diagnosis

Objective: To explore the feasibility of using da Vinci Surgical System to perform supraomohyoid neck dissection (SOND) to avoid visible scar and reduce trauma. Methods: Between September 2017 and December 2018, twenty patients (two females and 18 males, mean age, 54.8 years) with oral cancer treated in the Department of Stomatology, Hainan Hospital of General Hospital of Chinese PLA were enrolled in this study. Eight patients were assigned into robotic surgery group, and received robot-assisted SOND with retroauricular hairline incision. After the da Vinci Surgical System robotic platform was positioned, the neck dissection was performed in level Ⅱb, Ⅱa, Ⅲ, Ⅰb and Ⅰa orderly from the near region to far region. The other 12 patients were assigned into traditional surgery group, and received SOND with a traditional incision. The operation time, bleeding and amount of lymph node dissected were compared between two groups. Results: All the 8 cases of robot-assisted SOND were completed smoothly. Operation time [(4.5±1.0) h] was significantly longer in robotic surgery group than that [(2.5±1.0) h] in traditional surgery group (P<0.05). The amount of bleeding in robotic surgery group [30.0 (27.5) ml] was significantly lower than that in traditional surgery group [(100.0 (87.5) ml, P<0.05]. There′s no difference in the number of lymph nodes dissected between robotic surgery group (23.6±5.2) and traditional surgery group (22.8±6.0)(P>0.05). No postoperative hemorrhage, symptoms of nerve injury, flap necrosis and secondary healing were observed in robotic surgery group. Conclusions SOND through retroauricular hairline incision is feasible with the assistance of da Vinci Surgical System. The main advantage of this method is superior esthetic effects due to a hidden incision with minimal bleeding. There was no obvious differences in the amount of lymph nodes dissected and postoperative complications between two methods. However, robotic surgery costs a significantly longer operation time than traditional neck dissection.

The widespread application of next generation sequencing (NGS) in clinical settings has enabled testing, diagnosis, treatment and prevention of genetic diseases. However, many issues have arisen in the meanwhile. One of the most pressing issues is the lack of standards for reporting genetic test results across different service providers. The First Forum on Standards and Specifications for Clinical Genetic Testing was held to address the issue in Shenzhen, China, on October 28, 2017. Participants, including geneticists, clinicians, and representatives of genetic testing service providers, discussed problems of clinical genetic testing services across in China and shared opinions on principles, challenges, and standards for reporting clinical genetic test results. Here we summarize expert opinions presented at the seminar and report the consensus, which will serve as a basis for the development of standards and guidelines for reporting of clinical genetic testing results, in order to promote the standardization and regulation of genetic testing services in China.

Objective: ICMM occupational health risk assessment model was be used to evaluate the risk of a lead-acid battery enterprise. Methods: In November 2016, a lead-acid battery company in Jiangsu Province was selected as the research object. Based on the occupational health survey data and occupational hazard assessment reports, the ICMM risk assessment model was used to conduct occupational health risks in eight key positions of a lead-acid battery enterprise. The risk assessment results was verified by actual test results. Results: In the quantitative assessment model, the occupational health risk assessment results for the castings and welding positions exposed to lead smoke, and the occupational health risk assessment results for the grinding and dividing positions exposed to lead dust existed unacceptable risks. The occupational health risk assessment results for the ball-milled and plated positions exposed to lead dust existed tolerable risks. The occupational health risk assessment results for the lead-plated and soldered positions exposed to sulphuric acid pastes and acids existed potential risks. In qualitative evaluation matrix method, the occupational health risk assessment results for the castings and welding positions exposed to lead smoke, and the occupational health risk assessment results for the grinding and dividing positions exposed to lead dust existed high risks, the occupational health risk assessment results for other four key positions were considered to be with low risks. Conclusion The key control points for lead smoke in this enterprise were castings and welding positions; The key control points for lead dust were the grinding and separating brush positions. The quantitative assessment model and the qualitative assessment matrix method in the ICMM model were consistent with the actual test results in the eight health risk assessments of occupational hazards in key positions. Therefore, the method could be applied to the assessment of occupational health risks of the lead-acid battery enterprise. According to the results of the assessment, improvements could be made to high-risk positions and the concentration of occupational hazards in high-risk posts could be reduced to better protect the health of workers.

In this work, we used dual-polarization interferometry to explore the binding events between adenosine triphosphate (ATP) and ATP-binding aptamer (ABA) at solid-liquid interface.The single-stranded ABA was immobilized onto the chip surface.After the addition of ATP, the real-time and label-free technique for detailed investigation of their interactions were reflected on the changes of the mass, thickness, and density through DPI.By analysis of the binding curves from changes in mass, the association rate constant (ka, 4.66×10.3 L/(mol·s), dissociation rate constant (kd, 1.70 × 10.-2 s.-1), dissociation constant (KA, 2.7 × 10.5 L/mol), and association constant (KD, 3.7 × 10.-6 mol/L) were precisely determined.Moreover, good linear correlations between ATP concentrations and three parameters (mass, thickness, density) resolved by the response to ATP binding were obtained.The detection limits (LOD, 3σ) were 0.22 μmol/L for mass calibration, 0.14 μmol/L for thickness calibration, and 0.32 μmol/L for density calibration.We expect that this DPI-based aptasensor can be utilized to study the interactions of functional ABA with ATP, and also can be used for the detection of ATP with high sensitivity.

To synthesize 5-fluorouracil-nicotinamide (5-FU-NCT) cocrystal and to investigate its physicochemical and biological properties. The cocrystal of 5-Fu-NCT was prepared through the cooling technology. PXRD, NMR, FTIR and DSC were used to characterize the structure of 5-FU-NCT cocrystal. Solubility was measured by HPLC method. Drug resistant human liver cancer BEL-7402/5-FU cells were treated with 5-FU-NCT cocrystal, the inhibition effect was tested by MTT and HE staining, and cancer cell migration was determined by scratch test. According to PXRD, NMR, FTIR and DSC results, the cocrystal of 5-Fu-NCT had been synthesized successfully. The characteristic diffraction peaks (2θ/°) of the cocrystal were 16.4, 20.4, 22.3, 27.9 and 30.1. The solubility of 5-FU-NCT was 13.5 g/L as measured by HPLC. The antitumor activity tests showed that 5-FU-NCT cocrystal enhanced anticancer effect of 5-FU, and the IC50 of 5-FU and 5-FU-NCT was 129.6 μg/mL and 42.6 μg/mL, respectively. 5-Fu-NCT cocrystal have been synthesized successfully through the cooling technology and it shows an enhanced anticancer effect in comparison to 5-FU on BEL-7402/5-FU cells.
Antineoplastic Agents ; pharmacology ; Cell Line, Tumor ; Cell Movement ; drug effects ; Cell Survival ; drug effects ; Crystallization ; Fluorouracil ; chemistry ; Humans ; Liver Neoplasms ; Niacinamide ; chemistry ; Solubility

Objective:To prepare and characterize cyclodextrin inclusion complexes of regorafenib and to investigated their antitumor effects.Methods:Three inclusion complexes (RG-β-CD,RG-γ-CD,RG-Hp-β-CD) were prepared by recrystallization and solvent evaporation methods between regorafenib (RG) and β-cyclodextrin (β-CD),γ-cyclodextrin (γ-CD) and hydroxypropyl-β-cyclodextrin (Hp-β-CD),respectively.The compounds were characterized by Fourier transform infrared spectroscopy (FT-IR),thermogravimetric analysis (TG),differential scanning calorimetry (DSC),powder X-ray diffraction (PXRD),1 H nuclear magnetic resonance (1H-NMR),nuclear overhauser effect spectroscopy (NOESY).Human colon cancer SW620 cells were inoculated to Balb/c-nu nude mice,PBS,RG or RG-β-CD were given orally for 3 weeks,and the volumes of tumor were determined and compared among 3 groups.Results:The solubility and dissolution were improved after inclusion with 3 kinds of cyclodextrins.RG-β-CD had the best stability,followed by RG-γ-CD inclusion.The in vivo study showed that the tumor suppressive effect of RG-β-CD was stronger than that of regorafenib.Conclusion:The bioavailability of regorafenib by inclusion with cyclodextrin is enhanced due to the increased solubility,which can provide an effective method for improving solubility and dissolution of antitumor agents.

Objective:To study the characteristics and stability of new (S)-pantoprazole sodium hydrates.Methods:The X-ray single crystal diffractometer (SXRD),X-ray powder diffractometer (PXRD),thermogravimetric analysis (TG) and infrared spectrometry (IR) were used to characterize (S)-pantoprazole sodium hydrates.The stability of the hydrates was evaluated by high temperature test,affecting factors test and accelerated test.Results:The crystalline water in (S)-pantoprazole sodium hydrates were very easy to lose and obtain,but crystal structure was not changed significantly.The transition from (S)-pantoprazole sodium trihydrate to (S)-pantoprazole sodium hemipentahydrate occurred at approximately 40 ℃ and reversible transitions from hemipentahydrate to trihydrate occurred at high humidity.Two hydrates had no significant difference in accelerated test.Conclusion:The crystal structure of the two hydrates are almost the same,and hemipentahydrate is more stable than trihydrates at high temperature or at exposure to light[at (4500 ± 500)lx].