An unprecedented pair of Z/E isomeric pyridinium compound from the aqueous extract of Aspongopus chinensis Dallas / 药学学报

A novel pair of Z/E isomeric compounds with unprecedented carbon skeleton were isolated from an aqueous extract of Aspongopus chinensis Dallas by macroporous resin, silica gel, and semi-preparative high performance liquid chromatography (HPLC). Their structures were identified by nuclear magnetic resonance (NMR), Infrared spectroscopy (IR), Mass spectroscopy (MS) and other spectroscopic methods as (Z)-3-(but-1″-en-1″-yl)-1-(2ʹ-hydroxyethyl)-4-propylpyridin-1-ium, namely aspongopyridine A, and (E)-3-(but-1″-en-1″-yl)-1-(2ʹ-hydroxyethyl)-4-propylpyridin-1-ium, namely aspongopyridine B, respectively. Besides, the anti-inflammatory, anti-tumor, acetylcholinesterase inhibition and butyrylcholinesterase inhibition activities of the compounds 1 and 2 were evaluated. The results showed that compounds 1 and 2 have no anti-inflammatory, anti-tumor, and butyrylcholinesterase inhibition activities instead of weak acetylcholinesterase inhibition activity.

The biotin synthesis pathway in Mycobacteria tuberculosis is a new target for the development of anti-tuberculosis drugs / 药学学报

italic>Mycobacterium tuberculosis, responsible for tuberculosis (TB), remains a major health problem worldwide and is one of the infectious diseases causing increased morbidity and mortality worldwide. Biotin, namely vitamin H, is an important cofactor necessary for fatty acid biosynthesis, gluconeogenesis and amino acid metabolism in organisms including Mycobacterium tuberculosis. Due to its inability to ingestion biotin from outside, Mycobacterium tuberculosis can only obtain biotin through biotin biosynthesis. Different from the classical BioC-BioH, BioI-BioW and non-classical BioZ pathways, Mycobacterium tuberculosis synthesized biotin by "BioC-BioH(2)" pathway in the early stage. This review focuses on the unique biotin synthesis pathway of Mycobacterium tuberculosis and its key genes, especially the response of this pathway and biotin-dependent carboxylase to tuberculosis first-and second-line drugs, as well as inhibitors and natural products targeting biotin synthesis.

Clinical study of serum human-βeta-defensin-1 level for evaluating short-term prognosis in patients with acute-on-chronic liver failure / 中华肝脏病杂志

Objective: To evaluate the diagnostic value of serum human-βeta-defensin-1 level (HBD-1) for short-term (28-day) prognosis in patients with acute-on-chronic liver failure (ACLF). Methods: Fifty cases diagnosed with ACLF were selected. 20 cases with decompensated cirrhosis and 20 cases with compensated cirrhosis who were admitted at the same time were included. Age, gender, serum HBD-1 level, C-reactive protein (CRP), procalcitonin (PCT), neutrophil count/lymphocyte ratio (NLR), blood routine, coagulation function, liver function, kidney function, and other indicators from the three groups of patients were collected. Patients with ACLF were screened for indicators related to the short-term (28-day) prognosis. Patients were divided into an improvement group and a worsening group according to the 28-day disease outcome. The serum HBD-1 level and other above-mentioned indicators were compared between the two patient groups. The receiver operating characteristic (ROC) curve was used to analyze the diagnostic efficacy of serum HBD-1 levels for short-term prognosis in patients with ACLF. PCT, NLR, and prothrombin activity (PTA) application as a mono indicator and HBD-1 in combination with NLR, PCT, and PTA were compared to evaluate diagnostic efficacy for short-term prognosis in patients with ACLF. The intergroup mean of measurement data was determined using a t-test or analysis of variance. χ (2) test was used for comparison of count data. Spearman's rank correlation analysis was used for correlation analysis. Results: There was no statistically significant difference in age and gender among the three groups: ACLF, decompensated cirrhosis, and compensated cirrhosis (P > 0.05). The expression levels of serum HBD-1 in the ACLF group, decompensated cirrhosis group, and compensated cirrhosis group were (319.1 ± 44.4) ng/ml, (264.5 ± 46.5) ng/ml and (240.1 ± 35.4) ng/ml, respectively, while the ACLF group expression levels were significantly increased, with statistical significance (P < 0.01).The serum HBD-1 level was significantly higher in the ACLF worsening group (346.2 ± 43.6) ng/ml than that in the improvement group (308.5 ± 40.6) ng/ml, and the difference was statistically significant (P < 0.05). Correlation analysis showed that HBD-1, NLR, PCT, prothrombin time (PT), and international standardized ratio (INR) were negatively correlated with the 28-day disease outcome (improvement) of patients (P < 0.05). PTA was positively correlated with 28-day disease outcome (improvement) (P < 0.05). The area under the receiver operating characteristic curve (AUC) for evaluating HBD-1's diagnostic efficacy for short-term prognosis in patients with ACLF was 0.774, with a sensitivity of 0.750, a specificity of 0.786, and a cut-off point of 337.96 ng/ml. PCT, NLR, and PTA had greater diagnostic efficacy. HBD-1 combined with PTA had the highest diagnostic efficacy, with an AUC of 0.802, a sensitivity of 0.778, and a specificity of 0.786. The diagnostic efficacy of HBD-1+PCT, HBD-1+NLR and HBD-1, PCT, and NCR was superior to PTA mono. Conclusion: The serum HBD-1 level gradually increases with the aggravation of liver function injury and is negatively correlated with the short-term prognosis in patients with ACLF. Serum HBD-1 level has high sensitivity and specificity in predicting short-term prognosis in patients with ACLF, and its diagnostic efficacy is superior to that of PCT, NLR, and PTA. The combined application of HBD-1 and PTA has higher diagnostic efficacy; however, when the serum HBD-1 level is greater than 337.96ng/ml, it indicates poor prognosis in patients.

Research advances of real world study in the field of chronic wound / 中华烧伤杂志

In recent years, as a powerful supplement to the randomized controlled trial (RCT), real world study (RWS) has received more and more attention. However, in the field of chronic wounds, most of the patients have complex condition, and the strict inclusion and exclusion criteria of RCT were lack of practical application values. The RWS provides data closer to the real medical environment in clinical medical practice, drug and medical device supervision, and health technology evaluation. However, RWS has some problems that need to be resolved, such as inconsistent diagnostic criteria and unclear research endpoints. In addition, RWS in chronic wound research in China seems to have not really started yet, and institutions at all levels need to work together to promote the development of RWS.

Chemotherapy initiation with single-course methotrexate alone or combined with dactinomycin versus multi-course methotrexate for low-risk gestational trophoblastic neoplasia: a multi-centric randomized clinical trial / 医学前沿

We aimed to evaluate the effectiveness and safety of single-course initial regimens in patients with low-risk gestational trophoblastic neoplasia (GTN). In this trial (NCT01823315), 276 patients were analyzed. Patients were allocated to three initiated regimens: single-course methotrexate (MTX), single-course MTX + dactinomycin (ACTD), and multi-course MTX (control arm). The primary endpoint was the complete remission (CR) rate by initial drug(s). The primary CR rate was 64.4% with multi-course MTX in the control arm. For the single-course MTX arm, the CR rate was 35.8% by one course; it increased to 59.3% after subsequent multi-course MTX, with non-inferiority to the control (difference -5.1%,95% confidence interval (CI) -19.4% to 9.2%, P = 0.014). After further treatment with multi-course ACTD, the CR rate (93.3%) was similar to that of the control (95.2%, P = 0.577). For the single-course MTX + ACTD arm, the CR rate was 46.7% by one course, which increased to 89.1% after subsequent multi-course, with non-inferiority (difference 24.7%, 95% CI 12.8%-36.6%, P < 0.001) to the control. It was similar to the CR rate by MTX and further ACTD in the control arm (89.1% vs. 95.2%, P =0.135). Four patients experienced recurrence, with no death, during the 2-year follow-up. We demonstrated that chemotherapy initiation with single-course MTX may be an alternative regimen for patients with low-risk GTN.

Establishment of high-resolution bioassay profiling platform to screen α-glucosidase inhibitors from Malus hupehensis / 药学学报

italic>α-Glucosidase inhibitors play an important role in the treatment of diabetes. This study established a high-resolution bioassay profiling platform for rapidly screening α-glucosidase inhibitors in natural product extracts. Five α-glucosidase inhibitors were identified from Malus hupehensis, namely, 3-hydroxyphloridzin, quercetin-3-O-β-D-glucopyranoside, phloridzin, avicularin and quercitrin. The establishment and successful application of this platform provides a powerful tool for the efficient discovery of anti-diabetic active ingredients in complex systems.

Treatment of postprandial discomfort syndrome in the elderly: a multi-centered prospective randomized controlled clinical study / 中华内科杂志

Objective:To evaluate the efficacy and safety of Oryz-Aspergillus enzyme and pancreatin tablets (Combizym ?) in the treatment of postprandial distress syndrome (PDS) in the elderly, compared with gastrointestinal motility drugs. Methods:A prospective randomized controlled trial was designed and registered in the China Clinical Trials Registry (ChiCTR-IPR-16008185). The elderly patients with PDS were randomly divided into three groups, including Mosapride group with Mosapride citrate tablets 5 mg 3 times per day for 2 weeks; Combizym ? group with Combizym tablets 244 mg 3 times per day for 2 weeks; combined treatment group with both drugs and same doses for 2 weeks. The modified Nepean dyspepsia index (NDSI) score, discomfort intensity score and PDS score were calculated on patients before treatment, at the end of first and second week of treatment, as well as 4 weeks after treatment finished, respectively. Adverse effects were evaluated. Results:A total of 323 patients from 16 tertiary hospitals in China were enrolled in this study. Among them, 105 patients were in Mosapride group, 109 in Combizym ? group and 109 in combined treatment group. There were 148 males (45.8%) and 175 females (54.2%) with median age 71.4±9.0 years (60-100 years). Baseline characteristics of three groups were comparable. After treatment, the NDSI scores in three groups all decreased significantly ( P<0.001), while they were similar between groups ( P>0.05). The discomfort intensity score and PDS score in three groups showed a significant reduction after treatment ( P<0.001), especially in the combined treatment group. Compared with Mosapride group, the scores in Combizym ? group decreased significantly after one or two weeks [discomfort intensity score: after one week, 4.0(2.5, 8.0) vs. 6.0(3.0, 10.0); after two weeks, 3.0(0.0, 5.0) vs. 4.0(2.0, 6.0); all P<0.05. PDS score: after one week, 6.0(3.0, 9.0) vs. 7.0(3.5, 10.5); after two weeks, 3.0(0.0, 5.0) vs. 4.0(2.0, 7.0); all P<0.05]. The efficacy rate in all patients after first week of treatment was over 15.0%. The efficacy rates after two weeks were 55.2%, 68.8% and 73.4% in Mosapride group, Combizym ? group and combined treatment group, respectively. After two week treatment, the efficacy rates in Combizym ? group ( P=0.041) and combined group ( P=0.006) were higher than that of Mosapride group. The recurrence rate of Mosapride group was 9.5%, which was significantly higher than that of Combizym ? group (1.8%, P<0.05) and combined treatment group (1.8%, P<0.05). There were no serious adverse effects in the three groups. Conclusions:The efficacy of Oryz-Aspergillus enzyme and pancreatin tablets is comparable with that of Mosapride in elderly PDS patients, with fewer adverse effects and low recurrence rate. Combination regimen indicates better efficacy than that of Oryz-Aspergillus enzyme and pancreatin tablets or Mosapride alone.

Treatment of postprandial discomfort syndrome in the elderly: a multi-centered prospective randomized controlled clinical study / 中华内科杂志

Objective@#To evaluate the efficacy and safety of Oryz-Aspergillus enzyme and pancreatin tablets (Combizym®) in the treatment of postprandial distress syndrome (PDS) in the elderly, compared with gastrointestinal motility drugs.@*Methods@#A prospective randomized controlled trial was designed and registered in the China Clinical Trials Registry (ChiCTR-IPR-16008185). The elderly patients with PDS were randomly divided into three groups, including Mosapride group with Mosapride citrate tablets 5 mg 3 times per day for 2 weeks; Combizym® group with Combizym tablets 244 mg 3 times per day for 2 weeks; combined treatment group with both drugs and same doses for 2 weeks. The modified Nepean dyspepsia index (NDSI) score, discomfort intensity score and PDS score were calculated on patients before treatment, at the end of first and second week of treatment, as well as 4 weeks after treatment finished, respectively. Adverse effects were evaluated.@*Results@#A total of 323 patients from 16 tertiary hospitals in China were enrolled in this study. Among them, 105 patients were in Mosapride group, 109 in Combizym® group and 109 in combined treatment group. There were 148 males (45.8%) and 175 females (54.2%) with median age 71.4±9.0 years (60-100 years). Baseline characteristics of three groups were comparable. After treatment, the NDSI scores in three groups all decreased significantly (P<0.001), while they were similar between groups (P>0.05). The discomfort intensity score and PDS score in three groups showed a significant reduction after treatment (P<0.001), especially in the combined treatment group. Compared with Mosapride group, the scores in Combizym® group decreased significantly after one or two weeks [discomfort intensity score: after one week, 4.0(2.5, 8.0) vs. 6.0(3.0, 10.0); after two weeks, 3.0(0.0, 5.0) vs. 4.0(2.0, 6.0); all P<0.05. PDS score: after one week, 6.0(3.0, 9.0) vs. 7.0(3.5, 10.5); after two weeks, 3.0(0.0, 5.0) vs. 4.0(2.0, 7.0); all P<0.05]. The efficacy rate in all patients after first week of treatment was over 15.0%. The efficacy rates after two weeks were 55.2%, 68.8% and 73.4% in Mosapride group, Combizym® group and combined treatment group, respectively. After two week treatment, the efficacy rates in Combizym® group (P=0.041) and combined group (P=0.006) were higher than that of Mosapride group. The recurrence rate of Mosapride group was 9.5%, which was significantly higher than that of Combizym® group (1.8%, P<0.05) and combined treatment group (1.8%, P<0.05). There were no serious adverse effects in the three groups.@*Conclusions@#The efficacy of Oryz-Aspergillus enzyme and pancreatin tablets is comparable with that of Mosapride in elderly PDS patients, with fewer adverse effects and low recurrence rate. Combination regimen indicates better efficacy than that of Oryz-Aspergillus enzyme and pancreatin tablets or Mosapride alone.

Replication and Pathology of Duck Influenza Virus Subtype H9N2 in Chukar / 生物医学与环境科学（英文）

To investigate the susceptibility of Chukars to duck avian influenza virus H9N2 and explore their role in interspecies transmission of influenza viruses. Chukars were inoculated with duck avian influenza viruses H9N2. The present study demonstrated that inflammatory lesions and virus antigen were present in the trachea, bronchus, and parabronchus, and the viruses could be isolated from throat swabs and lung tissue homogenate supernatants. At 14 d post virus inoculation, anti-H9 influenza virus antibody in the serum was detected. The results indicated that Chukars are susceptible to duck avian influenza virus and serve as an intermediate host, thereby facilitating viral gene evolution and supporting the need for continued surveillance of epidemiology and evolution of the influenza virus in Chukars.

Quantitation of camellianin A in HepG2 cells using a high performance liquid chromatography-electrospray ionization tandem mass spectrometric method / 中国天然药物

The present study was designed to develop a sensitive and selective high performance liquid chromatography-tandem mass spectrometric method for the determination of Camellianin A in HepG2 cells. The extraction of Camellianin A was achieved using 15% trichloroacetic acid and then separated on a C column interfaced with a triple quadrupole tandem mass spectrometer in multiple reaction monitoring mode. The mobile phase was consisted of methanol-water (0.1% formic acid) (55 : 45, V/V). The total run time was 5.0 min. The method was linear in the concentration range of 0.25-250.0 ng·mL. The lower limit of quantification was 0.25 ng·mL. The intra- and inter-day relative standard deviations of entire concentration range were less than 9.3%. The proposed HPLC-MS/MS method was successfully applied to detect the intracellular concentration of Camellianin A in HepG2 cells.

Expression of miR-125a/b-5p in Serum and Urine of Preeclampsia and Related Clinical Studies / 现代检验医学杂志

Objective To detect miR-125a/b-5p expression in serum and urine of patients with preeclampsia,explore the role of miR-125a/b-5p in peripheral circulation on the pathogenesis of preeclampsia.Methods Samples of serum and urine of pa-tients with preeclampsia(n=20),and the normal pregnancy group(n=20)were collected and the expression of miR-125a/b-5p was detected by stem-loop-based real-time fluorescence quantitative reverse transcriptase polymerase chain reaction.Re-sults The expression of miR-125b-5p in the serum of patients with preeclampsia were significantly decreased compared with the normal pregnancy(Z=-2.272,P=0.023).There were no statistically differences of the expression of miR-125a-5p in serum between the two groups(Z=-0.622,P=0.547).The differences of urinary miR-125a/b-5p between patients with preeclampsia and normal pregnancy were not statistically significant(Z=-0.663,-0.189,P>0.05).Urinary miR-125b-5p was negatively correlated with diastolic blood pressure in preeclampsia group(r=-0.513,P=0.021).Serum miR-125b-5p was positively correlated with urea nitrogen in normal pregnancy group(r=0.472,P=0.036).Urinary miR-125a/b-5p were positively correlated with systolic blood pressure in normal pregnancy group(r=0.526,0.502,P=0.017,0.024). Conclusion The decrease of serum miR-125b-5p was associated with the pathogenesis of preeclampsia.

Study on the Relationship between Lipoprotein-Related Phospholipase A2,Homocysteine,Beta-N-1-Deoxy Fructosyl Component of Hemoglobin and Cerebral Microbleeds / 现代检验医学杂志

Objective To investigate the relationship between lipoprotein-related phospholipase A2(Lp-PLA2),homocysteine (Hcy),beta-N-1-deoxy fructosyl component of hemoglobin(HbAlc),low density lipoprotein cholesterol(LDL-C)and cere-bral microbleeds in patients.Methods Patients with CMBs were consecutively recruited from the Department of Neurology, in Shaanxi Provincial People's Hospital by using the diagnostic criteria according to the diagnosis and treatment of cerebral cerebrovascular disease in China in 2014.In addition,volunteers were included as normal controls.The demographic charac-teristics and the history of patients were collected.The level of Lp-PLA2,Hcy,HbA1c and LDL-C in each group was ana-lyzed.Results 62 patients with CMBs were included in this study,including 48 males and 14 females.30 patients were in-cluded into the normal control group,including 20 males and 10 females.The levels of Lp-PLA2,Hcy and HbA1c in the CMBs group were significantly higher than those in the control group(t=2.67,2.97,3.24,P<0.05).The level of HbA1c levels were correlated with the number of CMBs(r=0.287,P=0.024).The level of HbA1c was correlated with the num-ber of CMBs in deep white matter(r=0.304,P=0.016),while it was not correlated with the number of CMBs in the cortex (P>0.05).Conclusion The levels of Lp-PLA2,Hcy and HbA1c in CMBs were higher than those in normal control group. HbA1c levels were associated with the number of CMBs,especially in deep white matter.

Expression of EV71-VP1, PSGL-1 and SCARB2 in Tissues of Infants with Brain Stem Encephalitis / 法医学杂志

OBJECTIVE@#To understand the correlation of enterovirus 71 (EV71), P-selectin glycoprotein ligand-1 (PSGL-1), and scavenger receptor B2 (SCARB2) and to explore the possible pathway and mechanism of EV71 infection by observing the expression of EV71, PSGL-1 and SCARB2 in tissues of infants with brain stem encephalitis.@*METHODS@#The organs and tissues of infants with EV71-VP1 positivity in their brain stems were chosen. Expression and distribution of EV71-VP1, PSGL-1, and SCARB2 were detected and compared by immunohistochemistry.@*RESULTS@#Strong staining of EV71 -VP1 was observed in the neuron, glial cells, the inflammatory cells of perivascular cuffing, parietal cells of the gastric fundus gland while alveolar macrophages, intestinal gland epithelium cells, mucosa lymphoid nodule and lymphocyte of palatine tonsil showed moderate staining and weak staining were displayed in mesenteric lymph nodes and lymphocyte of spleen. PSGL-1 expression was detected in parietal cells of the gastric fundus gland, tonsillar crypt squamous epithelium, alveolar macrophages and leukocytes in each tissue. SCARB2 expression was observed in all the above tissues except the intestines and spleen.@*CONCLUSION@#The distribution of EV71 correlates with SCARB2 expression. SCARB2 plays an important role in virus infection and replication. Stomach may be an important site for EV71 replication.

Mechanical analysis on laparoscopic instruments when contacting with biological tissues / 医用生物力学

Objective To establish the contact deformation model of biological tissues contacting with endoscopic instruments, and to make mechanical analysis on contact stress and strain. Methods Based on Kelvin-Voigt model and Hertz contact theory, the contact deformation model of instruments (with both wedge-shaped teeth and cylinder-shaped teeth) contacting with biological tissues was established, and the variation of contact stress and strain changing with time in different endoscopic instruments were obtained through finite element analysis method and bio-impedance measurement. Results Endoscopic instruments with different structures of the teeth could cause different strain and stress on tissues during laparoscopic grasping. The stress of the instrument with wedge-shaped teeth on tissues was largest, while that with cylinder-shaped teeth was smallest, and that of instrument with hybrid structure of wedge-shaped and cylinder-shaped teeth was in between. Conclusions The hybrid structure of wedge-shaped and cylinder-shaped teeth can effectively reduce the peak pressure during laparoscopic grasping, thus prevent less tissue damage caused by wedge-shaped teeth, and enhance the grasping ability with cylinder-shaped teeth. This study provides an important reference for the safety use and better design of laparoscopic instruments in clinic.

Antitumor and antimetastatic effect of antimicrobial peptide conjugated with tumor homing peptide TMTP1 on the transplanted prostate cancer and gastric cancer in nude mice / 中华肿瘤杂志

<p><b>OBJECTIVE</b>Due to their lower risk for induction of resistance, antimicrobial peptides with selective anticancer effect could be developed into a new generation of anticancer drugs. We conjugated an antimicrobial peptide with tumor-targeting peptides (TMTP1) to explore whether it has inhibiting effect on the progression and metastasis of transplanted prostate cancer and gastric cancer in nude mice.</p><p><b>METHODS</b>Subcutaneously transplanted human prostate cancer and orthotopically transplanted human gastric cancer in nude mice were prepared. 50 µmol/L PBS (control group), 50 µmol/L TMTP1 (TMTP1 group) or 50 µmol/L TMTP1-GG-D(KLAKLAK)(2) (treatment group) were injected i.p. to the three groups of nude mice, respectively. The binding ability of the novel fusion polypeptide TMTP1-GG-D(KLAKLAK)(2) to the tumors and its antitumor effect were assessed by measurement of tumor volume, histopathological examination of the tumor tissues, testing apoptosis index of tumor cells with TUNEL staining, and survival curve plotting of the mice.</p><p><b>RESULTS</b>The median survival time of subcutaneous prostate cancer-bearing mice was 50 days in the control group, 55 days in the TMTP1 group, and 70 days in the TMTP1-GG-D(KLAKLAK)(2) group (P < 0.05). The median survival time of the subcutaneous gastric cancer-bearing mice was 25 days in the control group, 30 days in the TMTP1 group, and 45 days in the TMTP1-GG-D(KLAKLAK)(2) group (P < 0.01). The tumor volume in the subcutaneous prostate cancer-bearing mice was (2.5 ± 0.3)cm(3) in the control group, (1.8 ± 0.2) cm(3) in the TMTP1 group, and (0.3 ± 0.1)cm(3) in the TMTP1-GG-D(KLAKLAK)(2) group (P < 0.01). The tumor volume of the subcutaneous gastric cancer-bearing mice was (3.8 ± 0.4) cm(3) in the control group, (3.2 ± 0.2)cm(3) in the TMTP1 group, and (0.4 ± 0.1) cm(3) in the TMTP1-GG-D(KLAKLAK)(2) group (P < 0.01). Large tumors were observed in the stomach of the orthotopic gastric cancer-bearing mice of the control and TMTP1 groups. The tumor volume of the TMTP1-GG-D(KLAKLAK)(2) group was obviously reduced. White metastases in the liver, spleen and abdominal wall were observed in the control and TMTP1 groups (P < 0.01). TUNEL staining revealed that the apoptosis index of the control group was (31.9 ± 1.5)%, TMTP1 group (37.2 ± 2.3)% and TMTP1-GG-D(KLAKLAK)(2) group (69.7 ± 2.1)% (P < 0.01).</p><p><b>CONCLUSIONS</b>The results of our study demonstrate that the novel fusion peptide of antimicriobial peptide conjugated with TMTP1 can effectively inhibit tumor progression and metastasis, therefore, is promising to be a novel effective anticancer drug.</p>

Analysis of clinical manifestations of rhinal and pharyngeal and laryngeal amyloidosis by 12 cases / 临床耳鼻咽喉头颈外科杂志

OBJECTIVE@#To discuss the clinical characteristic of rhinal and pharyngeal and laryngeal amyloidosis.@*METHOD@#Twelve cases of amyloidosis was confirmed,one case of multiple myeloma accompanied pharynx nasalis, laryngeal and facial amyloidosis was diagnosed and treated by chemotherapy in department of hematology; one case of plasmacytoma accompanied amyloidosis in right inferior turbinate concha was expected by nasal endoscope under local anesthesia and was treated by chemotherapy in department of hematology; five cases of polyps of vocal cord accompanied laryngeal amyloidosis were expected under self-retaining laryngoscope; three cases of local amyloidosis in bilateral vocal cords, subglottis and trachea were expected under self-retaining laryngoscope by polypotome and/ or CO2 laser; one case of pharyngeal amyloidosis in right tonsil was treated by tonsillectomy and the other case of local amyloidosis in lingual surface of epiglottis was expected by direct laryngoscope under general anaesthesia.@*RESULT@#One case of multiple myeloma accompanied pharynx nasalis, laryngeal and facial amyloidosis died after 18 months because of cachexia accompanied pneumonia and multiple organ failure; one case of plasmacytoma accompanied amyloidosis in right inferior turbinate concha was relapse-free followed up for 2 years; five cases of polyps of vocal cord accompanied laryngeal amyloidosis were relapse-free followed up from 1 to 3 years one case of local amyloidosis in bilateral vocal cords, subglottis and trachea was relapse-free followed up for 3 years,another case of local amyloidosis in bilateral vocal cords, subglottis and trachea recurred in 4 months after operation and the other case recurred in 6 months after operation, these two recurrence cases of local amyloidosis in bilateral vocal cords, subglottis and trachea were treated again by operation and were relapse-free followed up for 6 months; two cases of pharyngeal amyloidosis (1 case of right tonsil amyloidosis and 1 case of local amyloidosis in lingual surface of epiglottis) were relapse-free followed up for 2 years.@*CONCLUSION@#The etiology of rhinal and pharyngeal and laryngeal amyloidosis is related to multiple factor. The clinical manifestations of rhinal and pharyngeal and laryngeal amyloidosis is complicated and non-specificity. To distinguish the clinical manifestations of primary amyloidosis (locality and general), secondary amyloidosis (locality and general), amyloidosis associated multiple myeloma and heredofamilial amyloidosis is important in diagnosis and treatment to reduce diagnostic errors.

Hedgehog signaling in cancer metastasis / 国际肿瘤学杂志

The Hedgehog (Hh) signaling pathway plays a crucial role in embryo development of drosophila and a variety of vertebrate including humans,via regulating cell differentiation and proliferation.Mutation of Hh and aberrant activation or overexpression of the secreted Hh signaling molecules may induce cancer.Recent studies show that Hh signaling is associatied with invasion and metastasis in multiple types of malignant tumours.The machanisms are correlated with maintaining of cancer stem cells,epithelial-mesenchymal transition ( EMT),tumor cell autocrine/paracrine signaling and promotion of tumor angiogenesis and lymphangiogenesis.The study of mechanisms how Hh signaling promotes cancer metastasis,will provide new directions for molecular diagnosis,prognosis and molecular targeted therapy of cancer.

Construction and identification of a yeast two-hybrid bait vector and its effect on the growth of yeast cells and the self-activating function of reporter genes for screening of HPV18 E6-interacting protein / 华中科技大学学报（医学）（英德文版）

By using a yeast two-hybrid system, a yeast two-hybrid bait vector was constructed and identified for screening of the HPV18 E6-interacting proteins, and its effects on the growth of yeast cells and the activation of reporter genes were investigated. Total mRNA extracted from Hela cells was reversely transcribed into cDNA. Fragment of HPV18 E6 cDNA was amplified using RT-PCR and directly ligated to the pGBKT7 vector. The recombinant plasmid was confirmed by restriction endonuclease analysis and DNA sequencing. The recombinant pGBKT7-HPV18 E6 plasmid and empty pGBKT7 vector were transformed into the yeast cell AH109, respectively. After they were cultured respectively in YPDA liquid medium and nutrition-deficient culture medium, their toxicity and transcriptional activation were tested by both the phenotype assay and the color assay. The bait plasmid HPV18 E6 was successfully obtained. After being cultured in YPDA liquid medium for 16h, the A (600 nm) values of two yeast fluids were 0.98+/-0.03 and 0.99+/-0.02, respectively. The recombinant pGBKT7-HPV18 E6 plasmid and empty pGBKT7 vector could grow to white colonies on SD/-Trp/X-alpha-gal plates, while no colony could survive on SD/-His/-Trp/X-alpha-gal, SD/-Ade/-Trp/X-alpha-gal plates, indicating that the bait plasmid pGBKT7-HPV18 E6 was constructed successfully and expressed correctly, and could not activate the transcription of reporter gene alone. The yeast two-hybrid GAL4 system 3 can be utilized to find HPV18 E6 interacting proteins.

Clinical analysis of the positive cases of HIV antibody in otorhinolaryngology patients / 临床耳鼻咽喉头颈外科杂志

OBJECTIVE@#To understand the clinical condition of the positive blood serum HIV antibody cases in otorhinolaryngology patients and explore its clinical characteristic.@*METHOD@#The positive cases in otorhinolaryngology patients were detected by the primary screening test for HIV from 2005 to 2010 , then were confirmed by the confirmation laboratory WB of CDC in Chengdu City. To analyse the results of the positive cases of HIV and collate the clinical manifestation.@*RESULT@#Totally 10 serum samples were positive by the primary screening test for HIV, among them 9 were confirmed by the confirmation laboratory, and the coincidence rate was 90.00%.@*CONCLUSION@#The positive cases by the primary screening test for HIV in otorhinolaryngology patients are increasing recently, but there are some false-positive cases. The clinical manifestation of HIV/AIDS patients are multiform because of the different stage of AIDS. To attach importance to diagnoses of HIV/AIDS in otorhinolaryngology is valuable in preventing nosocomial infection and avoiding medical staff infection due to occupational exposure and also reducing the occurrence of medical dispute.

Expression of Snail and tumor invasiveness in breast carcionma / 中华全科医师杂志

Immunohistochemistry was used to detect the protein expression of Snail in 5 specimens jusxta-eancerous normal breast tissues, 35 specimens of cancerous tissues without metastasis and 20 specimens of breast carcinoma with lymphonode metastasis. Breast carcinoma cell line MDA-MB-231 was transfected with antisense Snail. Results showed that the expression of Snail protein was significantly higher in breast carcinomas than in their normal tissues. The mRNA and protein expressions of Snail in the breast carcinoma cells treated with antisense Snail was significantly decreased while the E-cadherin protein significantly increased (both P < 0.05). The number of invasive ceils treated with antisense Snail was (10.5±1.3)%, while in treated with EGFP was (68.2±2.1)% (P < 0.05). The abnormal expression of Snail contribute to the invasiveness of breast carcinoma. The antisense Snail could prevent the cells ability to invade in vitro, and the effect is related with the up-regulated E-cadherin protein.