Abstract: Objective　To explore the value of real-time shear wave elastography in evaluating the severity of liver fibrosis in hepatitis B, and to analyze the factors that affecting its accuracy. Methods　A total of 196 chronic hepatitis B patients, who admitted to the Third Affiliated Hospital of Chengdu Medical College from February 2018 to October 2020, were selected for retrospective analysis. Demographic indicators such as gender, age, body mass index(BMI), and laboratory indicators such as fasting blood glucose, liver function, and blood lipid composition were collected. The patients were detected by real-time shear wave elastography. Taking the pathological test results as the gold standard, the diagnostic value of real-time shear wave elastography in the severity of liver fibrosis in chronic hepatitis B was analyzed, and the comprehensive effect of various factors on the diagnostic accuracy of real-time shear wave elastography was evaluated by Logistic regression analysis. Results　The differences in real-time shear wave elastography of patients with different severity of liver fibrosis in hepatitis B were statistically significant, and F0 grade

The content of the asarone submicro emulsion injection was determind by HPLC method, and thereby a quality evaluation method was established based on indexes of pH value, particle size, peroxide value, methoxy aniline values, free fatty acid, lysophosphatidylcholine, visible foreign substances, insoluble particle, sterility, bacterial endotoxin and impurities, etc. The results showed that the injection exhibited uniform physical appearance and all the products were in milkwhite liquid. The content of the three batches products were respectively 102.9%, 100.8%, 97.70% of the labeled amount, with mean particle size of 210-250 nm, and other indexes all met with the standards. The reserved samples showed no obvious change in terms of detection indexes and indicated good stability after the accelerated stability test and long-term stability for 12 months. The quality evaluation method established in this study could be applied to quality control and stability investigation of asarone submicron emulsion injection, which laid a basis for further clinical research and application.
Anisoles ; chemistry ; Chromatography, High Pressure Liquid ; Drug Stability ; Drugs, Chinese Herbal ; chemistry ; Emulsions ; chemistry ; Particle Size ; Quality Control

OBJECTIVETo make microscopic identification research of three Echinacea-species roots recorded in the United States Pharmacopeia.

METHODThe root transverse section and powder of E. angustifolia, E. pallida, and E. purpurea were observed. The main microscopic features were photographed.

RESULTThe main microscopic features of transverse section and powder in three Echinacea-species roots are basically similar, except for some diagnostic differences. The results provide reliable reference for the authentication of raw materials of western herbal studies.

Echinacea ; anatomy & histology ; cytology ; Microscopy ; Plant Roots ; anatomy & histology ; cytology ; United States

OBJECTIVETo analyze the clinicopathological features and prognosis of colorectal cancer patients with preoperative cancer-related anemia.

METHODSClinical data of 354 patients with colorectal cancer in the Second Affiliated Hospital of Guangzhou Medical College from January 2003 to July 2009 were analyzed retrospectively. Those with hemoglobin(Hb)<120 g/L before surgery were defined as cancer-related anemia.

RESULTSOf the 354 colorectal cancer cases, 195 were males and 159 were females. The median age was 65(range 22-92) years. Preoperative cancer-related anemia tended to be occurred in female(P<0.01) and those with preoperative albumin ≤35 g/L (P<0.01), right colon cancer(P<0.01) and full-thickness invasion(P<0.05). Cox regression analysis showed preoperative cancer-related anemia was an independent unfavorable factor for overall survival (HR=1.60, 95% CI:1.05-2.44; P<0.05), but not for disease-free survival (HR=1.43, 95% CI:0.97-2.12; P>0.05) in colorectal cancer.

CONCLUSIONSPreoperative cancer-related anemia plays an important role in the development and prognosis of colorectal cancer and great attention should be paid to clinical practice.

Adult ; Aged ; Aged, 80 and over ; Anemia ; etiology ; Colorectal Neoplasms ; complications ; surgery ; Female ; Humans ; Male ; Middle Aged ; Prognosis ; Retrospective Studies ; Young Adult

Objective To understand the effectiveness of China Infectious Disease Automated-alert and Response System(CIDARS)for outbreak detection at the regional level.Methods Two counties in Hunan province(Yuelu and Shuangfeng county)and two counties in Yunnan province(Xishan and Gejiu county)were chosen as the study areas. Data from CIDARS were analyzed on the following items: reported cases, warning signals, the time interval of signal response feedback, way of signal verification, outcome of signal verification and field investigation, from July 1,2008 to June 30,2010. Results In total, 12 346 cases from 28 kinds of diseases were reported,and 2096 signals of 19 diseases were generated by the system, with an average of 4.94 signals per county per week. The median of time interval on signal verification feedback was 0.70 hours(P25-P75:0.06-1.29 h)and the main way of signal preliminary verification was through the review of surveillance data(account for 63.07%). Among all the signals, 34 of them(1.62%)were considered to be related to suspected events via the preliminary verification at the local level. Big differences were found to have existed on the proportion of signals related to the suspected events of the total signals among the four counties, with Shuangfeng county as 4.71%, Yuelu county as 1.88%, Gejiu county as 0.95% and Xishan county as 0.58%. After an indepth study on the fields of suspected events, 12outbreaks were finally confirmed, including 5 on rubella, 4 on mumps, 2 on influenza and 1 on typhoid fever. Conclusion CIDARS could be used to assist the local public health institutions on early detection of possible outbreaks at the early stage. However, the effectiveness was different depending on the regions and diseases.

Asthma ; physiopathology ; Humans ; Inflammation ; etiology ; Matrix Metalloproteinase 9 ; analysis ; physiology ; Neutrophil Activation ; Neutrophils ; physiology ; Transforming Growth Factor beta ; physiology

OBJECTIVETo investigate DNA repair in CHL cells and HeLa cells after DNA damage induced by different oxidative agents.

METHODSCHL cells and HeLa cells were exposed to various damaging agents, CHL cells: H(2)O(2) for 25 min, K(2)Cr(2)O(7) for 105 min, doxorubicin (Dox) for 75 min HeLa cells: H(2)O(2) for 25 min, K(2)Cr(2)O(7) for 105 min; then cells were continuously cultured for 0-3 h after washing. Alkaline single cell gel electrophoresis (ASCGE) assay was used to detect DNA strand breaks.

RESULT(1) DNA strand breaks were induced in CHL cells after exposure to H(2)O(2) K(2)Cr(2)O(7) or Dox, which were repaired evidently after continuous culture for 1 h(P<0.01). The damages induced by H(2)O(2) or K(2)Cr(2)O(7) were repaired completely after culture for 2-3 h. However, the demage induced by Dox was repaired incompletely. (2) DNA strand breaks were induced also in HeLa cells after exposure to H(2)O(2) or K(2)Cr(2)O(7), which were repaired evidently after continuous culture for 0.5 h(P<0.01),and completely after culture for 1 h. (3) The regression coefficient related to the rate of comet cells and repair time was statistically different (P<0.05) between CHL cells and HeLa cells.

CONCLUSIONDNA damage induced by Dox is repaired more difficult than that induced by H(2)O(2) or K(2)Cr(2)O(7). The repair initiates immediately after DNA damage in both of cells, but more rapidly in HeLa cells than in CHL cells.

DNA ; metabolism ; DNA Damage ; DNA Repair ; HeLa Cells ; Humans ; Hydrogen Peroxide ; toxicity ; Oxidation-Reduction ; Regression Analysis

Osteoarthritis (OA) is a kind of degenerative disease characterized by hyperosteogeny at the joint margins and articular cartilage degeneration. Mechanical stress can regulate the multiple functions of cells. The integrin as one of the mechanoreceptors on the surface of cells, mainly mediated adhesion between cells and extracellular matrix, which plays an important role in the mechanical signal transmission to regulate the physiological functions of cell. Therefore, it is very important to select proper mechanical stimulation (such as naprapathy) in the early and middle stage of osteoarthritis, which regulate the expression of integrins to affect the function of chondrocytes, repair the damaged chondrocyte and delay the articular cartilage degeneration.
Animals ; Biomechanical Phenomena ; Chondrocytes ; cytology ; metabolism ; pathology ; Gene Expression Regulation ; Humans ; Integrins ; metabolism ; Mechanical Phenomena ; Protein Subunits ; metabolism

Background There is multi-dimensional order of spatial stereopsis perception in human,however,current stereopsis examination is zero-order of position disparity.A multi-dimensional space perception model is very important for the detection of stereoacuity.Objective This study was to screen the deficit of zero-order,first-order,second-order multi-dimensional spatial stereopsis perception in amblyopia and strabismus children and to explore the association of zero-order,first-order,second-order spatial perception deficit.Methods Multidimensional spacial perception was examined in 79 children aged 4-14 years in Beijing Children' s Hospital.Nineteen normal children,19 children with ametropia amblyopia,12 children with anisometropic amblyopia,18 children with strabismus and 11 children with strabismus combined amblyopia were included this study.The random-dot and line spatial stereopsis perception in zero-order,first-order and second-order were examined with a new system of multidimensional space perception screening.Written informed consent was obtained from each subject or custodian before any ocular examination associated with this study.Results Absence of zero-order,first-order,second-order random-dot channel was found in 24 children (24/79,30.4％),18 children (18/79,22.8％) and 24 children (24/79,30.4％) respectively,with an average percentage of 27.9％.Absence of zero-order,first-order,second-order line channel was examined in 37 children (37/79,46.8％),37 children (37/79,46.8％),32 children (32/79,40.5％),with an average percentage of 44.7％.In the children with a deficiency of the zero-order spatial perception,the children who still remained the first-order or/and second-order spatial perception of random-dot accounted for 41.6％ and that of lines accounted for 43.2％.In children without deficiency of zero-order random-dot or lines spatial space perception,deficiency of first-order and/or second-order spatial perception was in 37.5％ children.Various order spatial perception deficiency was seen in children suffering from amblyopia or strabismus compared with normal group(P ＜ 0.05).Conclusions There exists spatial perception deficiency in children with amblyopia or strabismus.The patients with zero-order spatial perception absence partially remain a first-order or/and second-order spatial perception;while the patients with normal zero-order spatial perception might have first-order or second-order spatial perception deficiency.The multi-dimensional space perception model has a directive role for the training of visual information process and the treatment of spatial perceptual learning in children with amblyopia or strabismus.

OBJECTIVETo prospectively evaluate the feasibility, safety and efficacy of the percutaneous pedicle screw fixation through the pedicle of fractured vertebra in the treatment of type A thoracolumbar fractures using Sextant system in the retrospective non-randomized case-control study.

METHODSA total of 38 consecutive non-randomized patients with type A thoracolumbar fractures, which had been stabilized posteriorly from December 2006 to March 2009, were examined retrospectively more than 9 months after surgery. Twenty-one patients had been treated conventionally with open pedicle screw fixation (OPSF) and 17 patients received minimally invasive treatment with Sextant percutaneous pedicle screw fixation (SPPSF). As a method of evaluation, the incision size, the intraoperation and postoperative volume of blood loss, operation time, postoperative hospital stay, blood transfusion, the radiological assessment of the sagittal Cobb;s angle, vertebral body angle and vertebral body height were recorded and compared.

RESULTSAll patients were followed up for 8-24 months (average 11.6 months). There were significant differences in the incision size, surgical blood loss, surgical draining loss, operation time, hospital stay after operation, blood transfusion, the proportion of antalgic supplement and postoperative incisional VAS between the two groups (P less than 0.05). Mean preoperative kyphotic deformity was 16.0 degree and improved by 9.3 degree after surgery in OPSF group, but 15.2 degree and 10.3 degree respectively in SPPSF group. Mean preoperative angle of the fractured vertebral body was 15.9 degree and improved by 7.9 degree after surgery in OPSF group, but 14.9 degree and 6.6 degree respectively in SPPSF group. Mean anterior vertebral body height (% of normal) was 67.3% before surgery and 95.8% after surgery, but 69.1% and 90.1% respectively in SPPSF group. Mean posterior vertebral body height (% of normal) was 93.3% before surgery and 99.5% after surgery, but 88.9% and 93.3% respectively in SPPSF group. Among the patients whose 9-month follow-up films were available, 3.0 degree of kyphosis correction was lost in OPSF group, but 3.2 degree in SPPSF group. And 1.0 degree of the angle of the fractured vertebral body correction was lost in OPSF group, but 1.5 degree in SPPSF group. Then 3.0% of the anterior vertebral body height correction was lost in OPSF group, but 2.2% in SPPSF group. And 3.0% of the posterior vertebral body height correction was lost in OPSF group, but 2.5% in SPPSF group. The sagittal Cobb's angle, vertebral body angle and anterior height of the fractured vertebra were all significantly different in each group before and after operation (P less than 0.05). There were no significant differences in the postoperative sagittal Cobb's angle, vertebral body angle and the improvement of the vertebral body height and the kyphotic deformity correction between OPSF and SPPSF groups (P larger than 0.05), but there was significant difference in the postoperative anterior height of the fractured vertebra between the two groups (P less than 0.05).

CONCLUSIONThe percutaneous pedicle screw fixation through the pedicle of fractured vertebra using Sextant system is a good minimally-invasive surgical therapeutic choice for patients with type A thoracolumbar fracture except for that the SPPSF has a little insufficiency in resuming the anterior height of the fractured vertebra compared with OPSF.

Adult ; Biomechanical Phenomena ; Bone Screws ; Female ; Fracture Fixation, Internal ; methods ; Humans ; Lumbar Vertebrae ; diagnostic imaging ; injuries ; surgery ; Male ; Middle Aged ; Prospective Studies ; Radiography ; Spinal Fractures ; surgery ; Thoracic Vertebrae ; diagnostic imaging ; injuries ; surgery