The application of genetic engineering technology in modern agriculture shows its outstanding role in dealing with food shortage. Traditional medicinal plant cultivation and collection have also faced with challenges, such as lack of resources, deterioration of environment, germplasm of recession and a series of problems. Genetic engineering can be used to improve the disease resistance, insect resistance, herbicides resistant ability of medicinal plant, also can improve the medicinal plant yield and increase the content of active substances in medicinal plants. Thus, the potent biotechnology can play an important role in protection and large area planting of medicinal plants. In the development of medicinal plant genetic engineering, the safety of transgenic medicinal plants should also be paid attention to. A set of scientific safety evaluation and judgment standard which is suitable for transgenic medicinal plants should be established based on the recognition of the particularity of medicinal plants.
Genetic Engineering ; Plant Diseases ; genetics ; prevention & control ; Plants, Genetically Modified ; chemistry ; genetics ; growth & development ; metabolism ; Plants, Medicinal ; chemistry ; genetics ; growth & development ; metabolism

Objective To elucidate the pathogenesis of nodular duodenitis by investigating its endoscopic and histopathological characteristics. Methods One hundred and thirty-six patients were enrolled into study. Histopathological changes of duodenal tissue specimens were examined by H-E and AB/PAS staining. H.pylori was demonstrated by Giemsa staining and rapid urease test. Results Under endoscopy, all 136 patients with nodular duodenitis had nodular lesions (ranged from 0.2 cm to 1.0 cm), variant degrees of erythema and edema, among them 21 cases had erosion, and 30 cases had haemorrhagic spots and/or ecchymoses. The detecting rate of nodular duodenitis was 0.9%(136/15 820) of all the endoscopic examinations and 3.8%(136/3541) of duodenitis. There was 107 cases of nodular duodenitis identified by histopathological examination including 53 cases of chronic duodenitis and 54 cases of active duodenitis. The histopathological characteristics of chronic duodenitis were lymphocytes and plasmocytes infiltration and varied degrees of atrophic duodenal villi and glands. While in active duodenitis, there was neutrophilic granulocytes infiltration. There were 51 cases of Brunner's gland hyperplasia and 59 cases of gastric epithelial metaplasia. Among all patients, 7 cases were proved to be gastric heterotopia, 4 cases of schistosomiasis and 18 cases of normal tissue. Among 107 nodular duodenitis, the positive rate of H.pylori infection was 45.8% (49/107), the infection rate of H.pylori in active duodenitis(59.3%,32/54) was significantly higher than that in chronic duodenitis (32.1%,17/53) (P

[Objective] To evaluate the clinical effect of acusector infrared and pressed needle on spondylopathy.[Method] Randomly divide the patients into treatment group 1 with acusector infrared and pressed needle,and control group 2 with acusector and infrared.[Result] In treatment group,8 cases were cured,32 better,5 not cured,and total effective rate 88.89%; for group 2,they were 2,28,15 and 66.67% respectively.There’s marked difference between them.[Conclusion] Acusector infrared and pressed needle are better in treating spondylopathy.

Objective To study the levels of soluble endoglin (sEng) in peripheral blood and intervillous space blood of patients with preeclampsia, and analyse the correlation between levels of sEng and clinical performance. Methods Levels of sEng in peripheral blood and intervillous space blood of 22 patients with preeclampsia (preeclampsia group, 12 cases of severe preeclampsia and 10 cases of mild preeclampsia) were detected by ELISA, and the correlation between levels of sEng and blood pressure, 24 h urine protein and fetal birth weight was analysed. Twenty-two normal pregnant women were served as control group. Results The sEng levels in peripheral blood and intervillous space blood of preeclampsia group were significantly higher than those of control group [ (31.89 ± 8.80) ng/mL vs (5.24 ± 1.60) ng/mL, P < 0.01; ( 37.74 ± 7.12) ng/mL vs (6.63 ±1.76) ng/mL, P < 0.01]. In preeclampsia group, the sEng levels in peripheral blood and intervillous space blood of severe preeclampsia were significantly higher than those of mild preeclampsia (P <0.01). In preeclampsia group, the sEng level in peripheral blood was significantly correlated with that in intervillous space blood of preeclampsia group (r = 0.876, P < 0.01) , neither was significantly correlated with blood pressure (P > 0.05), both were significantly correlated with 24 h urine protein (r = 0.729, P < 0.01; r = 0.743, P < 0.01) , and both were significantly correlated with fetal birth weight (r = - 0.736, P < 0.01; r = - 0.707, P < 0.01). Conclusion Levels of sEng in peripheral blood and intervillous space blood of patients with preeclampsia are significantly higher than those of normal pregnant women, and the levels of sEng are significantly correlated with the clinical performance of preeclampsia.

PurposeTo study the effect of phospholipid on the ability of HDL3 mediated cholesterol efflux from rat skin fibroblasts. Methods At the present of phosphatidylcholine (PC) or sphingomyelin (SPM), to measure the changes of HDL3-mediated cellular cholesterol efflux, cellulax phospholipid content and balance between free cholesterol and cholesteryl ester.Results① BSA (control) ,HDL3,PC,SPM, PC + HDL3 and SPM + HDL3 group mediated 4.70 %, 31.55 %, 7.35 %, 8.06 %,42.95 % and 46.98 % of cellular cholesterol efflux from the cells respectively. ② After the incubation of the cells with BSA, HDL3, HDL3 +SPM and HDL3 + PC, the cellular phosphorous content in PC(PC-p) and SPM (SPM-p) were 20.02,5.56; 17.56,5.28; 18.62,7.00 and 22.50,5.52 μg/plate respectively. ③ After the incubation of the cell with PC and SPM, ratio of free cholesterol to total cholesterol were 49.65 and 59.57 respectively. The ratio was 48.64 before incubation.ConclusionsO PC and SPM couldn' t mediated directly cellular cholesterol effiux, but they could enhance significantly HDL3 mediated cellular cholesterol efflux, and this ability of SPM was stronger than PC. ① With cellular cholesterol efflux,a part of cellular PC went out of the cells, but the content of cellular SPM didn' t change significantly. ③ SPM could induce cholesterol ester to convert into free cholesterol in the cells.

Objective To study pharmacokinetics of curcumin in Curcuma phaeocaulis in rats in vivo.Methods HPLC method was used to determine the curcumin in rat plasma.The conditions were column: Lichrospher-5-C_(18)(250 mm?4.6 mm, 5 ?m); column temperature: 25 ℃;mobile phase: CH_3CN-5% HAc water solution(45∶55);flow: 1 mL/min;detection wavelength: 420 nm.Results The calibration curve was liner(r=0.999 5) at the range of 6.5—104 ?g/mL.The average recovery was 98.5%.RSD was 2.41%(n=5).The pharmacokinetic parameters of curcumin were as follows: k_a was 0.53/h,k_e was 0.10/h,t_(1/2ka) was 1.32 h,t_(1/2k) was 6.89 h,t_(peak) was 3.89 h,C_(max) was 93.15 ng/mL,AUC was(1 369.38) ng/mL.Conclusion This method is stable,simple,and reliable,which can be applied for the determination of curcumin in plasma and pharmacokinetic studies.

Objective To investigate the clinical significance of serum procalcitonin (PCT),C reactive pro-tein(CRP),and lymphocyte subsets CD +19 CD +23 in children with Kawasaki disease (KD).Methods From August 2013 to July 2015 in hospital,30 cases of acute phase KD were selected.According to cardiac color Doppler ultra-sound results,30 patients were divided into coronary artery disease (CAL)group and non coronary artery disease (NCAL)group.The intravenous immunoglobulin (IVIG)before and after treatment,serum PCT,CRP,CD +19 CD +23 were detected.And 30 healthy children were selected as normal control group.Serum PCT was detected by chemilumines-cence immunoassay,CRP was determined by immune latex ratio method,CD +19 CD +23 was measured by flow cytometry. Results The levels of PCT,CRP and CD +19 CD +23 were (1.37 ±0.39)μg/L,(52.24 ±12.99)mg/L,(25.45 ± 11.06)% respectively in KD before IVIG treatment,which were significantly higher than those of KD after treatment [(0.49 ±0.24)μg/L,(37.48 ±6.27)mg/L,(17.23 ±1.97)%]and the control group[(0.05 ±0.00)μg/L, (16.08 ±5.21)mg/L,(15.76 ±2.39)%],the differences were statistically significant (t =6.108,5.983,8.172, all P <0.01).In CAL group,PCT[(1.75 ±0.53)μg/L,(65.95 ±14.55)mg/L]and CRP[(0.93 ±0.42)μg/L, (26.18 ±6.71)mg/L]were higher than NCAL group,the differences were statistically significant (t =5.504,5.621, all P <0.05).While CAL group CD +19 CD +23 [(24.70 ±11.86)%]and NCAL group[(25.79 ±10.59)%]had no statistically significant difference (t =0.559,P >0.05 ).Conclusion PCT,CRP and CD +19 CD +23 can be used as important index for early diagnosis and prediction of KD,the levels of CRP and PCT have clinical significance in the assessment of coronary artery lesions.

Objective To investigate the changes of learning and memory function ,vascular endothelial growth factor (VEGF) and heme oxygenase‐1(HO‐1) expression in cerebral cortex and hippocampus of chronic ischemic vascular dementia rats . Methods Thirty‐six healthy SD rats were divided into the control group ,sham operation group and model group ,12 cases in each group .The chronic ischemic vascular dementia rat model was established by the permanent bilateral carotid artery occlusion The sham operation group received the same treatment to the model group except without bilateral carotid artery occlusion .The learning and memory abilities were tested by the Morris water maze experiment and climbing rope strength experiment at 1 ,4 ,8 ,12 weeks respectively .The expressions of VEGF and HO‐1 in rat cerebral cortex and hippocampus was determined by immunohistochemical SP technique .Results The escape latency time at 8 ,12 weeks in the model group was longer than that in the sham operation group and control group ,and the number of crossing the platform was less than that in the sham operation group and control group ,the differences were statistically significant (P<0 .05);the time of climbing at 1 -12 weeks had no statistical difference between the model group and the sham operation group and between the model group and the control group (P>0 .05) .The positive expression of HO‐1 and VEGF protein contents in the control group and sham operation group was less than that in the model group with sta‐tistical difference(P<0 .05) .Conclusion Chronic cerebral hypoperfusion has a permanent damage to the learning and memory abil‐ities in rats ,while has no influence on the motor function .VEGF and HO‐1 may play a protective role in chronic cerebral ischemia .

Objective To evaluate the distribution and drug resistance of bacteria causing neonatal infectious pneumonia in Jiaxing,and to provide a therapy for clinical doctor to make a correct diagnosis,choose reasonable anti-biotics and avoid abuse of antibiotics.Methods Took expectoration from trachea in condition of asepsis to conduct culture and perform drug-sensitive test from 3025 cases.Results Totally 1 156 strains of aerobic bacteria were iso-lated.875 strains were gram negative bacilli(75.7%),269 strains were gram positive cocci(23.3%),and 12 strains were fungi(1.0%).Klebsiella pneumoiae,Escherichia coil,Acinetobacter baumanni,Enterobacter cloacae were com-mon in gram negative bacilli( respectively 178 cases,151 cases,87 cases,113 cases) .The proportion of the Staphylo-coccus aureus was the largest in gram positive cocci(245 cases) .The results showed that gram-negative bacilli were resistant to cefazolin, ampicillin, piperacillin and sensitive to meropenem, imipenem, piperacillin-tazuobatanna and cefoperazone-sulbactam.The drug resistance was severe of ESBL-positive.Staphylococcus aureus was resistant to penicillin, ampicillin, erythrocin, clindamycin and sensitive to linezolid, vancomycin, nitrofurantoin.Conclusion Gram-negative bacilli are the main bacteria in neonatals with infectious pneumonia.The drug resistance is severe.It is important to make a standard management and isolation.

Objective To observe the curative effect of head hypothermia combined with mouse nerve growth factor in the treatment of neonatal moderately severe hypoxic ischemic encephalopathy (HIE).Methods 50 cases of severe HIE were randomly divided into observation group and control group,with 25 cases in each group.Both two groups were given the conventional treatment.The observation group was given head hypothermia treatment in 6 hours after born,to maintain the nasopharyngeal temperature (34.0 ±0.5)℃,anal temperature (35.5 ±0.5)℃,72 hours continuously.At 96 hours after the birth,the nerve growth factor was given.The control group did not give the head mild hypothermia treatment.At 96 hours after birth,the nerve growth factor (methods,dosage and treatment were the same as the observation group)was treated with nutrition and brain nerve.After treatment,the improvements of heart rate,muscle tension,convulsions and disturbance of consciousness were observed in two groups.After 3 days,2 weeks and 4 weeks,the neonatal behavioral neurological assay (NBNA),1 and 3 months after birth,the outfit cranial MRI plain scan and brainstem auditory evoked potential (BAEP)were evaluated.Results NBNA scores of the two groups were compared in 3 days,2 weeks and 4 weeks after birth,the differences were statistically significant (t=2.53, 2.89,3.23,all P<0.05).In the observation group,the abnormal brain MRI was significantly less than the control group,the difference was statistically significant (χ2 =24.125,P<0.05).In the observation group,the number of abnormal auditory evoked potential was significantly less than that of the control group,the difference was statistically significant (χ2 =21.312,P<0.01 ).Conclusion Head hypothermia combined with mouse nerve growth factor therapy for the treatment of neonatal moderately severe HIE has protective effect,it can improve the treatment efficacy, reduce the long-term neurological sequelae,and without adverse reaction.