Co-Reactive Ligand In Situ Engineered Gold Nanoclusters with Ultra-Bright Near-Infrared Electrochemiluminescence for Ultrasensitive and Label-Free Detection of Carboxylesterase Activity.

Ultrasensitive and accurate monitoring of carboxylesterase (CE) activity is extremely crucial for the early diagnosis of hepatocellular carcinoma (HCC), which is still a considerable challenge. Herein, using a co-reactive ligand engineering strategy, ultra-bright near-infrared (λmax = 830 nm) and self-enhanced electrochemiluminescence (ECL) Au nanoclusters (NCs) were in situ prepared with 2-(diethylamino) ethanethiol (DEAET) as a co-reactive ligand. Remarkably, the co-reactive ligand not only acts as a stabilizer like traditional ligands but also plays a crucial role as a co-reactant to ensure a confinement effect to shorten the charge transfer distance and increase the local concentration, significantly improving the collision efficiency between the electrogenerated free radicals. Consequently, the DEAET Au NCs exhibited a record and stable anodal ECL without the addition of an exogenous co-reactant, dramatically superior to classical Au NCs and Ru(bpy)32+ with a certain amount of the co-reactant. As a proof of concept, a convenient and label-free CE biosensor was innovatively constructed using 1-naphthyl acetate as a selective substrate, achieving ultrasensitive detection for CE activity with a low limit of detection of 9.1 × 10-7 U/L. Therefore, this work not only paves a co-reactive ligand engineering strategy for in situ preparation of high-efficiency metal NCs but also provides an ultrasensitive and convenient platform for the early diagnosis of HCC.

Crystallinity Effect on Electrical Properties of PEALD-HfO2 Thin Films Prepared by Different Substrate Temperatures.

Hafnium oxide (HfO2) thin film has remarkable physical and chemical properties, which makes it useful for a variety of applications. In this work, HfO2 films were prepared on silicon through plasma enhanced atomic layer deposition (PEALD) at various substrate temperatures. The growth per cycle, structural, morphology and crystalline properties of HfO2 films were measured by spectroscopic ellipsometer, grazing-incidence X-ray diffraction (GIXRD), X-ray reflectivity (XRR), field-emission scanning electron microscopy, atomic force microscopy and x-ray photoelectron spectroscopy. The substrate temperature dependent electrical properties of PEALD-HfO2 films were obtained by capacitance-voltage and current-voltage measurements. GIXRD patterns and XRR investigations show that increasing the substrate temperature improved the crystallinity and density of HfO2 films. The crystallinity of HfO2 films has a major effect on electrical properties of the films. HfO2 thin film deposited at 300 °C possesses the highest dielectric constant and breakdown electric field.

[The Correlation Analysis between the Titer of IgG Anti-A/B Erythrocyte Antibody In Vivo of the Neonate and the Severity of Hemolytic Disease of Newborn].

OBJECTIVE: To investigate the titer of IgG anti-A/B erythrocyte antibody in vivo of the neonate with hemolytic disease of newborn(HDN), and explore its clinical valua in evaluating the severity of HDN. METHODS: 300 neonates with HDN, 50 neonates with neonatal hyperbilirubinemiain and 50 healthy neonates were selected as research object and Microtubes Gel Test was used to detect the titer of IgG anti-A/B erythrocyte antibody in vivo. Their clinical data and their mothers' prenatal examination data were retrospectively analyzed. Three hemolysis tests (direct antiglobulin test, free antibody test and release test), irregular antibody screening, and the titer of IgG anti-A/B blood group antibody was determined by serological method. Red blood cells(RBC), hemoglobin(Hb), reticulocytes(Ret) and nucleated red cells were detected by hematology analyzer. Indirect bilirubin and albumin(Alb) were detected by biochemical analyzer. The relationship between the titer of IgG anti-A/B erythrocyte antibody in vivo and the severity of HDN was analyzed. RESULTS: There were six serological diagnosis modes in the HDN group,the difference between modes was statistically significant (P<0.05). The antibody titer relationship between HDN neonates and pregnant women was positive correlation(r=0.8302). The highest antibody titer of release test and free antibody test were 1∶32 and 1∶2, and the difference was statistically significant（P<0.05）. RBC, Hb and Alb in HDN patients were lower than those in neonatal hyperbilirubinemia patients and healthy neonates (P<0.05), and were negatively relevant with antibody titer in vivo (r=-0.8016). Bilirubin content in HDN patients were higher than those in neonatal hyperbiliru binemia patients and healthy neonates group(P<0.05), and was positively relevant with antibody titer in vivo (r=0.8731). The hospital day in HDN patients was significantly relevant with the antibody titer in vivo (r=0.8547), but not with the age, sex, weight and ABO blood types (P>0.05). CONCLUSION: The detection of antibody titer in HDN patients can be used to evaluate the antibody concentration in vivo, predict the ability of antibody to induce erythrocyte hemolysis, and help to judge the serenrity and prognosis of HDN.

Clinical effects of in situ perforation of preserved split scar matrix in combination with scalp transplantation and vacuum sealing drainage in the treatment of hypertrophic scar in non-functional sites after burns / 中华烧伤杂志

Objective: To investigate the clinical effects of in situ perforation of preserved split scar matrix in combination with scalp transplantation and vacuum sealing drainage in the treatment of hypertrophic scar in non-functional sites after burns. Methods: A retrospective observational study was used. From June 2017 to June 2019, 33 patients (24 males and 9 females, aged 8-50 years) who met the inclusion criteria with hypertrophic scars in non-functional sites outside the face after burns were treated in General Hospital of TISCO (the Sixth Hospital of Shanxi Medical University). All patients underwent scalp transplantation after perforation of retained split scar matrix in situ (with scar thinning area of 90-500 cm2), and then the vacuum sealing drainage was performed. The hematoma and infection of wounds were observed on the 7th day after operation. At the same time, the survival rate of skin grafting was observed and calculated. The flatness and thickness of the scar in the operative area were observed in 12 months after operation, and the itching and pain of the patients were recorded. Vancouver Scar Scale was used to score the scar of patients before operation and at 3, 6 and 12 months after operation. The healing time and hair growth of donor site were observed. Data were statistically analyzed with repeated analysis of variance, paired sample t test and bonferroni correction. Results: On the 7th day after operation, local subcutaneous hematoma appeared in the wound of 2 patients, which healed after dressing change; no infection occurred. On the 7th day after operation, the survival rate of skin grafting of patients was 94.6%-99.0%(96.8±1.2)%. Scar flatness was well, the thickness of scar was not significantly higher than that of normal skin in 12 months after operation, and the symptoms of itching pain of patients disappeared or significantly relieved. Vancouver Scar Scale scores of patients before operation and at 3, 6, and 12 months after operation were 12.1±2.8, 8.5±1.5, 7.6±1.6, 6.7±1.3, respectively, and the scores of 3, 6, and 12 months after operation were all significantly lower than that before operation (with t values of 4.48, 4.06, and 3.97, respectively, P<0.01). All the donor sites of the head healed well in 4-7 days after operation. By 3-6 months after operation, all patients had good hair growth in the donor site and achieved no scar healing. Conclusions: The treatment of hypertrophic scar in non-functional sites outside the face after burns by in situ perforation of preserved split scar matrix in combination with scalp transplantation and vacuum sealing drainage can effectively improve the appearance of hypertrophic scar in non-functional areas after burn and reduce its degree of hyperplasia, with scar-free donor site healing.

Effects of psychological suggestion combined with rational food restriction therapy on blood glucose and lipid metabolism and mental resilience in patients with diabetes / 中华预防医学杂志

Objective: To analyze the effect of psychological suggestion combined with rational food restriction therapy on blood glucose, lipid metabolism and mental resilience in patients with diabetes. Methods: Patients with diabetes admitted to the Third Hospital of Nanchang from January 2020 to August 2020 were divided into the control group and the intervention group with randomized controlled and single blind methods. The control group was treated with routine dietary guidance and health education, and the intervention group was treated with psychological suggestion combined with rational diet therapy on the basis of the control group. Both groups were treated for 3 months. Blood glucose, lipid metabolism, mental resilience and quality of life were compared between the two groups at baseline and after 3-month intervention. Differences between groups and within groups were analyzed by t test and χ2 test. Results: 100 patients in the control group and 81 patients in the intervention group completed 3-month intervention. After 3-month intervention, the levels of glycosylated hemoglobin, fasting blood glucose, 2-hour postprandial blood glucose, low-density lipoprotein cholesterol and triglyceride in both groups were lower than those before intervention. The levels of these indicators in intervention group were lower than those in control group (P<0.05). However, the levels of high-density lipoprotein cholesterol and the scores of tenacity, self-reliance, optimism, role function, emotional function, social function, physical function and cognitive function in both groups were higher than those before intervention. These indicators in intervention group were higher than those in control group (P<0.05). Conclusion: Psychological suggestion combined with rational food restriction therapy could effectively improve the glucose and lipid metabolism, mental resilience, and quality of life among patients with diabetes.

Dendrobium nobile protects against ovalbumin-induced allergic rhinitis by regulating intestinal flora and suppressing lung inflammation / 中国天然药物

Antibiotic exposure-induced dysbiosis of the intestinal flora increases the risk of developing allergic rhinitis. Hence, regulating the balance of intestinal flora may be useful for preventing and treating allergic rhinitis. However, the underlying mechanism is unclear. Dendrobium nobile (Shihu) exhibits anti-inflammatory and immune activities. Hence, in this study, we investigated the mechanism via which Shihu may improve allergic rhinitis. Mouse models of allergic rhinitis with intestinal flora dysbiosis (Model-D, antibiotics induce intestinal flora dysbiosis with ovalbumin-induced allergy) and normal intestinal flora with allergic rhinitis (Model-N, ovalbumin-induced allergy) were established. The effect of Shihu on intestinal flora and inflammation caused during allergic rhinitis were analyzed. Allergic symptoms, infiltration of hematoxylin and eosin in the lungs and nose, and the release of various factors [interleukin (IL)-2, IL-4, IFN-γ, IL-6, IL-10, and IL-17] in the lungs were evaluated. The results indicate that intestinal flora dysbiosis exacerbated lung and nose inflammation in allergic rhinitis. However, treatment with the Shihu extract effectively reversed these symptoms. Besides, the Shihu extract inhibited the PI3K/AKT/mTOR pathway and increased the level of Forkhead box protein in the lungs. Additionally, the Shihu extract reversed intestinal flora dysbiosis at the phylum and genus levels and improved regulator T cell differentiation. Furthermore, in the Model-D group, the Shihu extract inhibited the decrease in the diversity and abundance of the intestinal flora. Screening was performed to determine which intestinal flora was positively correlated with Treg differentiation using Spearman's correlation analysis. In conclusion, we showed that Shihu extract restored the balance in intestinal flora and ameliorated inflammation in the lungs of allergic rhinitis mice and predicted a therapeutic new approach using Traditional Chinese Medicine to improve allergic rhinitis.

Emergency Biosafety Management Practice in Laboratory of Shelter Hospital.

At the end of 2019, the novel coronavirus infection outbroke in Wuhan, Hubei Province. On Feb. 2, 2020, Wuhan, as the worst-hit region, began to build "shelter hospital" rapidly to treat patients with mild illness. The shelter hospital has multiple functions such as emergency treatment, surgical treatment and clinical test, which can adapt to emergency medical rescue tasks. Based on the characteristics that shelter hospital only treats patients with mild illness, tests of shelter laboratory, including coronavirus nucleic acid detection, IgM/IgG antibody serology detection, monitoring and auxiliary diagnosis and/or a required blood routine, urine routine, C-reactive protein, calcitonin original, biochemical indicators (liver enzymes, myocardial enzymes, renal function, etc.) and blood coagulation function test etc, were used to provide important basis for the diagnosis and treatment of the disease. In order to ensure laboratory biosafety, it is necessary to first evaluate the harm level of various specimens. In the laboratory biosafety management, the harm level assessment of microorganisms is the core work of biosafety, which is of great significance to guarantee biosafety. As an emergency deployment affected by the environment, shelter laboratory must possess strong mobility. This paper will explore how to combine the biosafety model of traditional laboratory with the particularity of shelter laboratory to carry out effective work in response to the current epidemic.

Autofocusing method for a digital fringe projection system with dual projectors.

This paper presents a novel technique to achieve autofocusing for a three-dimensional (3D) profilometry system with dual projectors. The proposed system uses a camera that is attached with an electronically focus-tunable lens (ETL) that allows dynamic change of camera's focal plane such that the camera can focus on the object; the camera captures fringe patterns projected by each projector to establish corresponding points between two projectors, and two pre-calibrated projectors form triangulation for 3D reconstruction. We pre-calibrate the relationship between the depth and the current being used for each focal plane, perform a 3D shape measurement with an unknown focus level, and calculate the desired current value based on the initial 3D result. We developed a prototype system that can automatically focus on an object positioned between 450 mm to 850 mm.

Overlapping Cervical Cell Image Segmentation Based on Bottleneck Detection and Watershed Algorithm / 中国医疗器械杂志

This study proposes an image segmentation method based on bottleneck detection and watershed algorithm to solve the problem of overlapping cervical cell image. First, we use polygon approximation to get all feature points on the cell contour and then use bottleneck detection and ellipse fitting to obtain the correct split point pairs. Therefore, the approximate range of the overlapping region was determined. The watershed algorithm was used to obtain the internal boundary information for the gradient image of the region. Finally, the segmentation results of the overlapped cells were obtained by superimposing with the outer contour. The experimental results show that this algorithm can segment the contour of a single cell from the overlapping cervical cell images with good accuracy and integrity. The segmentation result is close to that of doctors' manual marking, and the segmentation result is better than other existing algorithms.

Dynamic chromatopharmacokinetics model for components in Chinese medicine and validation in Buyang Huanwu Decoction / 中国中药杂志

The Chinese medicine is mostly derived from plants or animals, highly polymorphic, with dynamic components which are reflected by the characteristic peaks and fingerprint peaks in chromatographic fingerprints. The chromatopharmacokinetics method for determined components is not applicable due to dynamic changes of chromatopharmacokinetics. Based on the preliminary study, dynamic pharmacokinetics mathematical model for multiple components in Chinese medicine was set up and verified by Buyang Huanwu Decoction as the model drug, applying the principle of the total quantum statistical moment(TQSM), superimposing or subtracting the relevant statistical parameters in blood samples and blank samples. This provided a new method for the chromatopharmacokinetic study of Chinese medicine. HPLC was used to determine the TQSM parameters in blood and blank sample fingerprints of Buyang Huanwu Decoction at each point, and the overall TQSM parameters of drug-containing blood sample and blank samples were obtained with addition calculation of TQSM; while the initial TQSM of the pure drug can be obtained with subtraction calculation. The metabolic and absorption equilibrium constants were calculated iteratively to a steady state using the estimated metabolic equilibrium constants, then the metabolic chromatopharmacokinetic parameters in rats were obtained: VUC_T 1.262×10~8 mAu·s, MRT_T 37.48 h, VRT_T 9.016×10~2 h~2, CL_T 25.79 mL·h~(-1)·kg~(-1), Vs 1.586×10~2 mL·kg~(-1), t_(T,0.5) 6.15 h, respectively. This suggested that 95% of the compounds in whole recipe were metabolized and secreted from the body after 0-96.33 h. The experiment verified that the established mathematical model and the total quantum moment statistics parameters can represent the dose-time relationship of Buyang Huanwu Decoction, which can be used to study on in vivo metabolism dynamics for Chinese medicine.

Efficacy evaluation of modified lamina osteotomy replantation versus traditional lamina osteotomy replantation in treating lumbar disc herniation with lumbar instability / 中国骨伤

<p><b>OBJECTIVE</b>To evaluate the clinical effects of modified lamina osteotomy replantation versus traditional lamina osteotomy replantation in the treatment of lumbar disc herniation with lumbar instability.</p><p><b>METHODS</b>The clinical data of 146 patients with unilateral lumbar disc herniation with lumbar instability underwent surgical treatment from March 2008 to March 2013 were retrospectively analyzed. Patients were divided into two groups according to osteotomy replantation pattern. There were 77 patients in the traditional group (underwent traditional lamina osteotomy replantation), including 42 males and 35 females with an average age of (49.4±18.5) years;the lesions occurred on L₄,₅ in 46 cases, on L₅5S₁ in 31 cases. There were 69 patients in modified group (underwent modified lamina osteotomy replantation), including 37 males and 32 females with an average age of (49.8±17.9) years;the lesions occurred on L₄,₅ in 40 cases, on L₅S₁ in 29 cases. The operation time, intraoperative blood loss, complication rate during operation, lamina healing rate, recurrence rate of low back and leg pain were compared between two groups. Visual analogue scales (VAS) and Japanese Orthopadic Association (JOA) scores were used to evaluate the clinical effects.</p><p><b>RESULTS</b>The operation time and intraoperative blood loss were similar between two group (>0.05). There was significantly different in nerve injury rate(5.80% vs 16.9%) and dural injury rate(1.45% vs 9.09%) between modified group and traditional group(<0.05). The recurrent rate of low back pain of modified group was higher (91.30%, 63/69) than that of traditional group (76.62%, 59/77), and the intervertebral fusion rate of modified group was lower(8.70%, 6/69) than that of traditional group (29.9%, 23/77) at 3 years after operation. Postoperative VAS scores of all patients were significantly decreased at 6 months, 1, 2, 3 years, and JOA scores were obviously increased (<0.05). At 1, 2, 3 years after operation, VAS scores of modified group were significantly lower than that of traditional group(<0.05), and JOA scores of modified group were higher than that of traditional group(<0.05).</p><p><b>CONCLUSIONS</b>Modified lamina osteotomy replantation has better long-term efficacy(in the aspect of recurrent rate of low back pain, intervertebral fusion rate, VAS and JOA score at three years follow-up) in treating lumbar disc herniation with instability.</p>

Clinical observation of ultrasound guided popliteal sciatic nerve combined saphenous nerve block for hallux valgus patients with metatarsophalangeal joint dislocation / 中国骨伤

<p><b>OBJECTIVE</b>To explore clinical effects of ultrasound guided popliteal sciatic nerve combined saphenous nerve block in patients with anterior foot orthopedics.</p><p><b>METHODS</b>From January 2017 to October 2017, 60 hallux valgus patients with metatarsophalangeal joint dislocation were randomly divided into experimental and control group according to random number table. Thirty patients in experimental group were treated by ultrasound guided popliteal sciatic nerve combined saphenous nerve block, including 13 males and 17 females, aged 31 to 76 years old with an average of (59.23±10.07) years old;and body mass index ranged from 21 to 30 kg/m² with an average of (24.57±1.85) kg/m²; 12 cases were grade I and 18 cases were grade II according to ASA grading. Thirty patients in control group were treated by spinal anesthesia, including 12 males and 18 females, aged from 20 to 74 years old with an average of (54.20±15.87) years old; and body mass index ranged from 20 to 29 kg/m² with an average of (24.43 ± 3.15) kg/m²; 11 cases were grade I and 19 cases were grade II according to ASA grading. Block time of anesthesia, onset time of sensory nerve block, onset time of motor nerve block, invalid time of motor nerve block, invalid time of sensory nerve block were compared between two groups. Hemodynamic changes before anesthesia(T₀), 15 min after block(T₁), 30 min after block(T₂), at the beginning of the operation(T₃), 30 min after the beginning(T₄) of surgery and at the end of operation(T₅), adverse reactions and subjective satisfactory between two groups were also recorded.</p><p><b>RESULTS</b>Both of the anesthetic protocol could achieved satisfied clinical effects. In experimental group, block time of patients, onset time of sensory block, invalid time of motor nerve block and invalid time of sensory nerve block were longer than those in control group, and there were significant differences between two groups(<0.001). There was no significant difference between two groups in onset time of motor nerve block(> 0.05). There were no significant differences of systolic blood pressure (SBP), diastolic blood pressure (DBP), heart rate (HR) in experimental group at different time points(> 0.05). There were significant differences of SBP, DBP in control group at different time points (<0.05). There was no significant difference of HR in control group at different time points(> 0.05).</p><p><b>CONCLUSIONS</b>Ultrasound guided popliteal sciatic nerve combined saphenous nerve block could meet demand of hallux valgus patients with metatarsophalangeal joint dislocation. Compared with lumbar anesthesia, it could maintain hemodynamic stability, prolong effective analgesia time after operation, and improve patients' overall comfort and safety for free activity above the knee joint.</p>

Analysis of clinical effects in the treatment of single-segment lumbar degenerative disease by lamina osteotomy and former vertebral plates regraft / 中国骨伤

<p><b>OBJECTIVE</b>To compare the clinical effect between the lamina osteotomy and former vertebral plates regraft method and total laminectomy and interbody fusion method in treating single-segment lumbar degenerative disease.</p><p><b>METHODS</b>The clinical data of 167 patients with single-segment lumbar degenerative disease underwent surgical treatment from January 2010 to December 2014 were retrospectively analyzed. There were 92 males and 75 females, aged from 45 to 75 years old with an average of (59.6±12.4) years. The patients were divided into lamina osteotomy and former vertebral plates regraft group(82 cases) and total laminectomy and interbody fusion group(85 cases) according to the different surgical methods used. The general conditions and clinical effects were compared between two groups. General conditions included the operation time, intraoperative blood loss, postoperative drainage, hospitalization time and the clinical effects included the visual analogue scale (VAS), Japanese Orthopaedic Association(JOA), Oswestry Dability Index(ODI), MacNab results, epidural fibrosis (EF), the incidence of adjacent segment degeneration (ASD).</p><p><b>RESULTS</b>All the patients were followed for 18 to 36 months with an average of (24.8±5.7) months, furthermore, there was no significant difference in the follow-up time between two groups. There was no significant difference in general conditions such as operation time, intraoperative blood loss, postoperative drainage, or hospitalization time between two groups. At final follow-up, the VAS, ODI, JOA, of all patients were significantly improved (<0.05);and the three factors above in the lamina osteotomy and former vertebral plates regraft group respectively were(2.0±1.1) points, (24.0±1.8) %, (19.8±8.2) point, while the results of total laminectomy and interbody fusion group were(2.5±1.6) points, (23.3±2.0)%, and(22.5±8.5) point;there was statistical difference between two groups(<0.05). According to the standard of MacNab, 59 cases obtained excellent results, 20 good, 3 fair results in the lamina osteotomy and former vertebral plates regraft group;while 47 cases got excellent results, 26 good, and 12 fair results in the total laminectomy and interbody fusion group;there was significant difference between two groups(<0.05). Sixteen patients(19.51%) with EF and 20 patients(24.39%) with ASD were found in lamina osteotomy and former vertebral plates regraft group;and 30 patients(35.29%) with EF and 37 patients(43.53%) with ASD were found in total laminectomy and interbody fusion group; there was significant difference between two groups(<0.05).</p><p><b>CONCLUSIONS</b>Both two methods can achieve the ideal effects for the treatment of single-segment lumbar degenerative disease, but the lamina osteotomy and former vertebral plates regraft method can reserve the integrity of posterior ligamentous complex, reducing the incidence of EF and ASD, and is a better surgical method.</p>

Antagonistic effect of vitamin E on di-2-ethylhexyl phthalate-induced reproductive toxicity in male rats / 中华男科学杂志

<p><b>Objective</b>To explore the antagonistic effect of vitamin E (VE) on male reproductive toxicity induced by di-2-ethylhexyl phthalate (DEHP) in pubertal SD rats and its underlying mechanisms.</p><p><b>METHODS</b>Thirty 5-week-old male SD rats were randomly divided into five groups of equal number, corn oil control, low-dose (10 mg/kg/d), medium-dose (100 mg/kg/d) and high-dose DEHP exposure (500 mg/kg/d), and VE intervention (high-dose DEHP + VE ［100 mg/kg/d］), and treated respectively for 30 successive days. At 3 days after treatment, the testes of the animals were harvested for determination of the oxidative stress index, serum reproductive hormone levels, cauda epididymal sperm parameters, and expressions of cell apoptosis-related genes and proteins.</p><p><b>RESULTS</b>Compared with the control group, the rats of the medium- and high-dose DEHP groups showed significant decreases in the levels of such serum reproductive hormones as follicle-stimulating hormone (FSH), luteinizing hormone (LH) and testosterone (T), sperm parameters as average path velocity (VAP), straight line velocity (VSL), curvilinear velocity (VCL), straightness (STR), linearity (LIN) and wobble (WOB), and the activities of superoxide dismutase (SOD) and glutathione peroxide (GSH-Px), but significant increases were observed in the latter two groups in the content of malondialdehyde (MDA)(［3.32±0.87］ nmol/mg pro vs ［2.13±0.49］ nmol/ mg pro), mRNA expressions of Bad, Bax, Cytochrome C, Caspase-3 and the Bax/Bcl-2 ratio, and protein expressions of Cytochrome C and Caspase-3. In comparison with the high-dose DEHP group, the VE intervention group exhibited remarkably increased serum LH and T levels, sperm VAP, VSL, VCL, STR and WOB, and activities of SOD and GSH-Px, but markedly decreased mRNA expressions of Bad, Bax, Cytochrome C, Caspase-3 and the Bax/Bcl-2 ratio as well as the protein expressions of Cytochrome C and Caspase-3 in the testis tissue (P<0.05).</p><p><b>CONCLUSIONS</b>Exposure to DEHP induces androgen secretion disorders, causes oxidative damage to the testicular tissue, activates the mitochondrial apoptosis pathway in the testis, and ultimately reduces the quality of epididymal sperm, while VE can protect the rat testis from DEHP-induced reproductive toxicity.</p>

Studies on constituents of Polygonum multiflorum extract and based on UPLC-Q-TOF-MS / 中国中药杂志

To explore the drug-induced constituents of Polygonum multiflorum extract (PM). This study was the first to study the drug-induced constituents in target organ liver. Agilent MassHunter qualitative analysis software and Metabolite ID software were applied for the analysis of retention time, exact relative molecular mass, primary and secondary mass spectrum information based on ultra performance liquid chromatography-quadrupole time-of-flight mass spectrometry (UPLC-Q-TOF-MS) and targeted-MS/MS. By comparison with literature and standards, a total of 5 prototypes and 6 metabolites were identified or tentatively elucidated from the liver samples. In addition, the drug-induced constituents in plasma and PM were also analyzed in this study and 8 prototypes and 19 metabolites were detected from the plasma samples, while 30 compounds were detected from the extract of PM. Emodin oxidative acetylation metabolites, hydroxyl methylation metabolites, carboxylation glucuronidation metabolites and ketone glucuronidation metabolites in this study were first reported. Through the comparative analysis between the and constituents of PM, the study preliminarily revealed the drug-induced constituents (prototypes and metabolites) in liver and clarified the transfer process and transmutation rules of constituents in PM, blood and liver, which would further deepen our understanding on constituents of PM .

Mitochondrial ATP-sensitive potassium channels and cardiovascular diseases / 中国药理学通报

With the aging of population and the changes of lifes-tyle, the cardiovascular diseases have become a serious threat to human health. Meanwhile, the cardiovascular death has become the chief death reason during recent epidemiological survey, so the prevention and treatment of cardiovascular diseases have be-come the focus of researches now. Mitochondrial ATP-sensitive potassium channels ( mitoKATP ) is an inward rectifier potassium channel located in the mitochondrial inner membrane, which has the effect of improving the energy metabolism, inhibiting the ap-optosis, relieving the overload of Ca2+ and stabilizing the inter-nal environment. Recently, some researchers have also found that mitoKATP can influence the development of cardiovascular diseases in different ways. This paper summarizes the structure and function of mitoKATP and the relationship between cardiovas-cular diseases and mitoKATP , aiming to clarify its role in the de-velopment of cardiovascular diseases.

A method of establishing type 2 diabetic cardiomyopathy model in mice / 中国病理生理杂志

AIM:To establish a mouse model of type 2 diabetic cardiomyopathy induced by sustained high-fat diet(HFD)feeding and single intraperitoneal injection of streptozotocin(STZ).METHODS: The 5 ~6-week-old C57BL/6J mice were randomly divided into 2 groups(n=20 per group): the mice in control group received a sustained regular diet;the mice in HFD+STZ group received a sustained HFD and were intraperitoneally injected with STZ(100 mg/kg)at the 5th week.The body weight and blood glucose were measured at 0,5,6,11 and 16 weeks.The mice in control group and HFD +STZ group were analyzed with echocardiography,HE staining,ELISA and immunohistochemistry at the 11th and 16th weeks.RESULTS:The body weight of the mice in HFD +STZ group was higher than that in control group(P<0.05)during each modeling period,and was slightly decreased 1 week after STZ injection.The blood glucose of the mice in HFD+STZ group was higher than 13.89 mmol/L 1 week after STZ injection.The serum insulin of the mice in HFD+STZ group was lower than that in control group(P<0.05)at the 11th week and the 16th week.Echocardio-graphy, HE staining and immunohistochemistry analysis showed that the mice in HFD +STZ group had mild ventricular dysfunction and cardiomyocyte hypertrophy, and cardiomyocyte area and apoptosis rate were obvious higher than those in control group(P<0.05)at the 16th week,while these indicators were not obviously changed in HFD +STZ group com-pared with control group at the 11th week.CONCLUSION:The sustained HFD feeding and single intraperitoneal injec-tion of STZ successfully establish a mouse model of type 2 diabetic cardiomyopathy.

Effect of DEK targeting silence on proliferation and cell cycle of human hepatoma HepG2 cells / 新乡医学院学报

Objective To study the influence of targeted silencing of DEK on the proliferation and cell cycle of human hepatoma cell lines.Methods The human hepatoma cells line HepG2 were routinely cuhured and the cells were divided into blank control group,siRNA control group and DEK siRNA group when the cells grew to 90％ tusion.The cells in blank control group were cultured normally without any treatment;the cells in siRNA control group and DEK siRNA group were transfected with siRNA expression vector and DEK siRNA expression vector mediated by LipofectamineTM2000 liposomes,respectively.The expression of DEK mRNA in HepG2 cells was detected by real-time polymerase chain reaction;the expression of DEK and CyclinD1 protein in HepG2 cells was detected by Western blot;the proliferation of HepG2 cells was detected by methyl thiazolyl tetrazolium method,and the cell cycle was observed by flow cytometry.Results The expression of DEK mRNA in the blank control group,siRNA control group and DEK siRNA group was 0.826 ±0.052,0.776 ±0.051 and 0.420 ±0.050 respectively;the expression of DEK protein in the blank control group,siRNA control group and DEK siRNA group was 0.691 ± 0.073,0.726±0.061 and 0.311 ±0.038 respectively;the expression of CyclinDl protein in the blank control group,siRNA cuntrol group and DEK siRNA group was 0.712 ± 0.069,0.780 ± 0.074 and 0.434 ± 0.039 respectively.The expressions of DEK mRNA,DEK protein and CyclinD1 protein in DEK siRNA group were significantly lower than those in the blank control group and siRNA control group (P ＜ 0.05);there was no statistic difference in the expression of DEK mRNA,DEK protein and CyclinD1 protein between the blank control group and siRNA control group(P ＜0.05).The proliferation ability of HepG2 cells in DEK siRNA group after transfection of 24,48,72,96,120 h was significantly lower than that in the blank control group and siRNA control group(P ＜0.05);there was no statistic difference in the proliferation ability of HepG2 cells between the blank control group and siRNA control group at each time point(P ＜ 0.05).The proportion of G0 + G1 phase cells in DEK siRNA group was significantly higher than that in the blank control group and siRNA control group(P ＜ 0.05);the proportions of S phase and G2 + M phase cells in DEK siRNA group were significantly lower than those in the blank control group and siRNA control group(P ＜ 0.05);there was no statistic difference in the proportion of G0 + G1 phase,S phase and G2 + M phase cells between the blank control group and siRNA control group (P ＜ 0.05).The result of Pearson correlation analysis showed that the expression of CyclinD1 protein was positively correlated with the expression of DEK mRNA and protein(r =0.909,0.899;P ＜ 0.05).Conclusion DEK siRNA can inhibit the proliferation of HepG2 cells,and change the cell cycle distribution through down regulating the expression of DEK gene in HepG2 cells.This process may be related to the down regulation of the expression of CyclinD1.

Effects of bisphenol A on the expression of N-cadherin, Vimentin and FSHR in rat Sertoli cells / 中华劳动卫生职业病杂志

Objective@#To explore the effects of BPA on the expression of N-cadherin, Vimentin and FSHR in rat Sertoli cells.@*Methods@#Primary Sertoli cells collected from prepuberty rats (18-21 d) were cultured for 48 h, and then they were treated with 0, 30, 50, 70 μmol/L BPA respectively for 24 h. The methods of MTT, real-time quantitative PCR and Western blotting were utilized to measure the cell ability of Sertoli cells, the mRNA and protein expression levels of N-cadherin, Vimentin and FSHR respectively.@*Results@#Compared with control, the cell abilities of Sertoli cells in 50 μmol/L BPA group and 70 μmol/L BPA group increased significantly (P<0.05) . The cell abilities of Sertoli cells decreased with the increases of exposure doses of BPA. Compared with control, the expression of N-cadherin mRNA only increased in 30 μmol/L BPA group (P<0.05) , the expression of Vimentin mRNA decreased significantly in all doses group of BPA (P<0.05) , the expression of FSHR mRNA increased in all doses group of BPA (P<0.05) . Compared with the control, the protein levels of N-cadherin increased significantly in 50 μmol/L BPA group (P<0.05) , the protein levels of Vimentin decreased significantly in all doses group of BPA (P<0.05) , the protein levels of FSHR decreased significantly in 50 μmol/L BPA group and 70 μmol/L BPA group (P<0.05) .@*Conclusion@#The mechanism of testicular toxicity from BPA might be the alterations of N-cadherin, Vimentin and FSHR by disturbing normal spermatogenesis.

Posterior debridement and bone grafting via intervertebral space combined with internal fixation for the treatment of lumbosacral tuberculosis / 中国骨伤

<p><b>OBJECTIVE</b>To explore the clinical effects of posterior debridement, bone grafting via intervertebral space combined with internal fixation for the treatment of lumbosacral tuberculosis.</p><p><b>METHODS</b>The clinical data of 32 patients with lumbosacral tuberculosis underwent the procedure of one-stage posterior intervertebral debridement, bone grafting and internal fixation from January 2007 to July 2013 were retrospectively analyzed. There were 17 males and 15 females, aged from 27 to 63 years with an average of (49.8±9.2) years. The course of disease was from 5 to 18 months with the mean of (10.7±3.2) months. There was involved the vertebral body of L₅ in 1 case, the intervertebral space of L₅S₁ in 8 cases, and the vertebral body of L₅ or S₁ combined with intervertebral space of L₅S₁ in 23 cases. VAS, ESR, CRP, the lumbosacral angle, the height of intervertebral space of L₅S₁, and ASIA grade were used to evaluate clinical effects.</p><p><b>RESULTS</b>All the patients were followed up from 18 to 39 months with an average of 21.6 months. Operative time was 120 to 260 min with the mean of 175 min, and intraoperative bleeding was 700 to 1 450 ml with the mean of 1 050 ml. VAS before operation was 8.4±1.6, then descended to 3.5±0.8(<0.05) on the 3rd month after operation and redescended to the level of 1.7±0.6(<0.05) at the final follow-up. The ESR and CRP before operation were (48.8±10.2) mm and (58.6±5.6) mg/L, respectively, then decreased to (35.6±6.9) mm and (22.5±4.3) mg/L (<0.05) at the 3rd month after operation and returned to the normal level at the final follow-up. The height of intervertebral space of L₅S₁ and lumbosacral angle before operation were (7.7±0.4) mm and (19.3±1.2)°, respectively, then improved to (10.3±0.3) mm and (22.4±1.5)° on the 3rd month after operation(<0.05), and maintained such level, no obvious lost at later. According to ASIA grade, 8 cases were grade C, 19 were grade D, 5 were grade E before operation, and at final follow-up, 1 case still was grade D, others were grade E.</p><p><b>CONCLUSIONS</b>The procedure of posterior debridement, bone grafting via intervertebral space combined with internal fixation is an effective and safe method in treating lumbosacral tuberculosis, it can effectively debride tuberculose focus, maintain the spinal stability, and improve the dysfunction with less complication.</p>