ObjectiveTo study the using of cerrobase as the compensation material in the intensitymodulated radiation therapy (IMRT) implementation and impact factors.MethodsWith therapy planning system (TPS) exported the radiation field intensity file (Dicom RT),through measuring the attenuation coefficient of cerrobase,to calculate the processing depth of AUTIMO 3D CNC corresponding for Dicom RT files at each pixel,then using the processed foam casting of Cerrobase,produced the required IMRT compensator.Through the MATRIXX testing the IMRT compensator in clinical implementation.At the same time we compared the MU of using multi-leaf collimator (MLC) and Cerrobase IMRT compensator for 10patients.ResultsWith cerrobase compensation IMRT can get similar dose or dose distribution to dose produced by TPS for point or plane dose,error is within 5％.To comparison with MLC,using cerrobase compensator has fewer treatment times ( (4.44±0.39) min:(5.71±0.57) min (t =10.82,P =0.000) )and fewer MU (462.5 ± 65.8) MU:(524.5±99.6) MU(t=3.14,P=0.012) ).Conclusions Comparison with MLC IMRT,the cerrobase compensation technique has an important application value with its unique advantages.This research provides an implemented method of IMRT radiotherapy for the primaryhospital.

Infection with the hepatitis C virus (HCV) frequently causes chronic viral hepatitis, a major risk factor for the development of cirrhosis and hepatocellular carcinoma or primary liver cancer. The origin of the HCV remains obscure because no closely related animal virus homolog has been identified. Also, efforts to understand the pathogenesis of the HCV have been hampered by the absence of small animal models for this human disease. Since 2011, with application of new sequencing technologies, various non-primate HCV homologs have been identified that will play an important part in understanding the origin and evolution of HCV, as well as establishment of related animal models.
Animals ; Disease Models, Animal ; Hepacivirus ; genetics ; Hepatitis C ; etiology ; virology ; Humans

OBJECTIVETo search for a simple, quick and accurate method for the sperm DNA integrity test by modifying the conventional sperm chromatin dispersion (SCD) test, and to investigate the reference value range of normal sperm DNA integrity by the improved SCD assay.

METHODSWe modified the conventional SCD test in its procedures, reagents preparing and utensils to be used, compared the improved method with the conventional one, and detected 293 normal semen samples for sperm DNA integrity by the modified SCD test.

RESULTSAn improved SCD test was established, and no statistical differences were found between the results of the modified and conventional methods. The reference value range was determined by the improved SCD assay for normal sperm DNA integrity, which was < 32.58% for abnormal sperm DNA integrity.

CONCLUSIONThe improved SCD test could detect sperm DNA integrity more quickly, and it reduced the cost in reagents.

Adult ; Chromatin ; ultrastructure ; DNA ; analysis ; Genetic Techniques ; Humans ; Male ; Reference Values ; Semen Analysis ; Sperm Motility ; genetics ; Spermatozoa ; chemistry

Here in this paper introduced is an analysis system for X-ray cephalometry developed through Windows platform,which includes three parts: data input, cephalometry analysis & calculation, and display & printing of diagnostic results. It has been applied in orthodontic department of Stomatological Hospital of the Fourth Military Medical University, and it is quite convenient for doctors' cephalometry diagnosis.
Cephalometry ; instrumentation ; Computers ; Humans ; Medical Records Systems, Computerized ; instrumentation ; Orthodontics ; instrumentation ; methods ; Radiographic Image Enhancement ; instrumentation ; Radiography ; instrumentation ; Software

OBJECTIVETo study the effects of Qingre Xiaoji Recipe (QXR) on the migration, chemotaxis, and tube formation capability of human umbilical vein endothelial cells (HUVECs) induced by human lung adenocarcinoma cells (SPC-A-1).

METHODSThe QXR groups at different final concentrations (2.5, 5.0, 10.0, and 20.0 mg/mL) and a control group were set up. Then the chemotaxis and tube formation capabilities were observed using Erasion trace test, Transwell chamber assay, and Matrigel matrix tube formation assay.

RESULTSQXR at three concentrations (2.5, 5.0, and 10.0 mg/mL) had inhibition on the migration of HUVECs cultured by SPC-A-1 cell supernatant (P<0.05). Besides, the migration rate decreased along with increased concentrations. The number of chemotactic HUVECs was significantly less than that of the positive control group (P <0.01), and the inhibition rate of chemokine increased along with increased concentrations. Furthermore, the number of chemotactic HUVECs was negatively correlated to the drug concentration (r = -0.830, P <0.01). The area of HUVEC cell tubule formation was significantly lower than that of the positive control group (P <0.01). The inhibition rate of HUVEC cell tubule formation increased along with increased drug concentration. Besides, the area of HUVEC cell tubular formation was negatively correlated with the drug concentration (r = -0.937, P <0.01).

CONCLUSIONThe mechanism of QXR for fighting against tumor angiogenesis might be correlated with its inhibition on the migration, chemotaxis, and tube formation of tumor vascular endothelial cells.

Adenocarcinoma ; blood supply ; pathology ; Cell Line, Tumor ; Chemotaxis ; drug effects ; Drugs, Chinese Herbal ; pharmacology ; Human Umbilical Vein Endothelial Cells ; cytology ; drug effects ; Humans ; Lung Neoplasms ; blood supply ; pathology ; Neovascularization, Pathologic

OBJECTIVETo explore the efficacy and mechanism of Lirukang Granule in treating hyperplasia of mammary gland (HMG).

METHODSOne hundred patients with HMG were randomly assigned to two groups, 50 in each group. The patients in the treated group were orally administered with LRKG thrice a day, one package each time, and those in the control group were given orally Rukuaixiao Tablet thrice a day, 4 tablets each time. The therapeutic course for both groups was 4 months. The clinical efficacy, pain alleviating rate, as well as changes of local sign and symptom scores were observed before and after treatment. The changes of serum estradiol (E(2)), progesterone (P), testosterone (T), follicle stimulating hormone (FSH), luteinizing hormone (LH) and prolactin (PRL) in some randomly selected patients (24 patients in the treated group and 24 in the control group) before and after treatment were measured with radioimmunoassay.

RESULTSThe total clinical efficacy in the treated group was superior to that in the control group, significant difference was shown between the two groups (P < 0.01). The cure-effective rate and total effective rate in the treated group were 70.0% and 88.0% respectively, significantly higher than those in the control group (38.0% and 64.0%) respectively (P < 0.01), and the pain alleviating rate in the treated group was also significantly higher in the former than that in the latter (88.0% vs 64.0%, P < 0.05). Moreover, the treated group showed obvious superiority in improving the patients' symptom and sign scores (P < 0.01), and abnormalities of gonadal hormone as compared with the respective items in the control group (P < 0.01).

CONCLUSIONLRKG has good efficacy in the treatment of HMG, and its mechanism may be related to the regulation on endocrine and immune function.

Adult ; Breast ; pathology ; Drugs, Chinese Herbal ; therapeutic use ; Female ; Follicle Stimulating Hormone ; blood ; Humans ; Hyperplasia ; Luteinizing Hormone ; blood ; Middle Aged

Objective To evaluate the self-treatment effectiveness on patients with ehwnic Keshan disease.Methods Twenty patients with chronic Keshan disease were selected from individuals with Keshan disease in Fuyu County,Heilongjiang Province.They were trained three times every three months of self management including pathogenetic condition education,general guidance,drug therapy,and they also taught how to adiust the doBe of drug according to their illness.Major symptom score,heart rate(HR),ultrasoundcardiogram (UCG)index and cardiac functional grading of these patients at basehne,after 3 months and 6 months of treatment were compared.Results The 20 patients rated their main symptoms score as(15.03 ±6.77)before self- treatrnent,and significantly decreased to(7.25±4.82)and(6.70±4.90)after 3 and 6 months treatment(P<0.01); the heart rate(HR) was (76.40±12.06) beats per minute(bpm)before self-treatment,and dramatically decreased to (69.95±12.63),(67.15±9.76)bpm after 3 and 6 months treatment(P<0.01).As for UCG detecting index,left atrial diameter(Lad)aIld left ventricular end-diastolic diameter(LVEDd)Was(37.85 ±5.23)nun and(52.49± 9.38)mm separately before self-treatment,and notablely decreased to(36.77 ±5.63),(52.15 ±9.24)mm,and (35.29±5.50),(50.81±8.88)mm respectirely after 3 and 6 months of treatment(P<0.01 or<0.05);left ventricuIar ejection fractiOII(LVEF)markedly increased(P<0.05),from(55.15±15.80)%at baseline to(57.35± 12.51)%at 3 months and(60.30±13.42)%at 6 months;there were no significant differences in mitral flow E/A ratio changes before and after treatment(P>0.05);compared with prior to the treatment.cardiac function grading was significantly better aftertreatmentfor 3 months(T=36.0,P<0.05),but not after 6 months(T=17.5,P> 0.05).Conclusions The patients'serf-treatment is effective,which we recommend to uphold and widespread.

OBJECTIVETo assess the feasibility and safety of excising or patching the inferior vena cava (IVC) without replacement in patients with primary retroperitoneal tumors (PRPT) involving the IVC.

METHODSA retrospective analysis was conducted in 116 consecutive patients with PRPT presented to our Hospital between December 2007 and December 2008. IVC involvement was found in 11.2% of the cases, and in 93 cases receiving surgical tumor removal, the complete resection rate was 93.55%. According to the location of IVC involvement by the PRPT, the cases were classified into 3 groups with IVC involvement in the segment from the second hepatic portal vein to the renal vein (segment A), the segment on the bilateral renal vein plane (segment B), and the segment from the caval bifurcation to the renal vein (segment C).

RESULTSThe most common vascular involvement occurred in segment C (61.54%, 8/13), and 2 cases presented with segment A involvement and 2 had segment B involvement. All the 3 segments of IVC were involved in 1 case. Five cases with IVC involvement received IVC patching only, and 4 had resection or ligation of the segment C of the IVC, and resection of the segment A and B of the IVC was performed in 2 and 1 case, respectively. One patient received complete resection of whole IVC involved. All patients recovered smoothly and were discharged.

CONCLUSIONThe infrarenal IVC can be ligated or resected safely without reconstruction. Combined resection of the bilateral renal vein and segment B of the IVC may result in renal insufficiency. IVC involvement and occlusion between the second hepatic portal and renal veins can be ligated safely without affecting the renal function.

Adult ; Feasibility Studies ; Female ; Humans ; Ligation ; Male ; Middle Aged ; Neoplasm Invasiveness ; Retroperitoneal Neoplasms ; pathology ; surgery ; Retrospective Studies ; Vascular Surgical Procedures ; methods ; Vena Cava, Inferior ; pathology ; surgery ; Young Adult

Bile Ducts, Intrahepatic ; metabolism ; Humans ; Interleukin-2 Receptor alpha Subunit ; metabolism ; Liver ; metabolism

Purpose: Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is the pathogen of coronavirus disease 2019. Diagnostic methods based on the clustered regularly interspaced short palindromic repeats (CRISPR) have been developed to detect SARSCoV-2 rapidly. Therefore, a systematic review and meta-analysis were performed to assess the diagnostic accuracy of CRISPR for detecting SARS-CoV-2 infection. Materials and Methods: Studies published before August 2021 were retrieved from four databases, using the keywords “SARS-CoV-2” and “CRISPR.” Data were collected from these publications, and the sensitivity, specificity, negative likelihood ratio (NLR), positive likelihood ratio (PLR), and diagnostic odds ratio (DOR) were calculated. The summary receiver operating characteristic curve was plotted for analysis with MetaDiSc 1.4. The Stata 15.0 software was used to draw Deeks’ funnel plots to evaluate publication bias. Results: We performed a pooled analysis of 38 independent studies shown in 30 publications. The reference standard was reverse transcription-quantitative PCR. The results indicated that the sensitivity of CRISPR-based methods for diagnosis was 0.94 (95% CI 0.93–0.95), the specificity was 0.98 (95% CI 0.97–0.99), the PLR was 34.03 (95% CI 20.81–55.66), the NLR was 0.08 (95% CI 0.06– 0.10), and the DOR was 575.74 (95% CI 382.36–866.95). The area under the curve was 0.9894. Conclusion Studies indicate that a diagnostic method based on CRISPR has high sensitivity and specificity. Therefore, this would be a potential diagnostic tool to improve the accuracy of SARS-CoV-2 detection.