S801 leukemic cell line established by our department was used as cells for interferon (IFN) induction and stimulating induction. S801 cell culture of concentration of 5-8x10~6 cells/ml was used for IFN induction and IFN titer of 3.55 Lg IU/ml was obtained by classical procedure. The IFN titer obtained S801 cell cultures after pretreatment with Ciwujia eleutherosides B. D and E or polysaccharide (PES) combined with priming procedure,then using Sendai Virus as an inducer was 10-20 times higher than that in cultures without any pretreatment. These Chinese medical herbs may be the ideal IFN helpinducers. This cell line may be applied for IFN production.

Candida shehatae xyl1 gene and Pichia stipitis xyl2 gene were amplified by PCR and the xyl1 and xyl2 were both placed under the promoter GAL of vector pYES2 to produce the recombinant expression vector pYES2-P12. Subsequently the pYES2-P12 vector was transformed into S. cerevisiae YS58 by LiAc to produce the recombinant yeast YSS8-12. It was indicate that the recombinant yeast YSS8-12 could converse xylose to ethanol with the xylose consumption rate of 81. 3%.

With the constant rise of energy price,it has a great practical meaning of using lignocellulose to produce ethanol.Xylose is a kind of monosaccharide whose content is only less than glucose in most lignocellulosic hydrolysates.There is some difficulty of producing ethanol from lignocellulose by the traditional ethanol production strain Saccharomyces cerevisiae,because it cannot metabolize xylose.People have tried to use genetic engineering technology and cell fusion method to modify Saccharomyces cerevisiae to make it metabolize xylose and produce ethanol for many years.This review indroduced the progress in this field.

In this study,we discussed the way of imparting the microbial knowledge and elevating non-biological student's science in public optional course "Microbes and Man" from the teaching practice.During the course,we first chose the material according to students' characteristic,and then introduced several methods like lecturing on subject,visiting factories and making microbial experiments in order to inter-est students in microbiology and get better in teaching effects.

Background Inherited retinal degeneration,one of the major causes of blindness worldwide,comprises a large number of disorders characterized by a slow and progressive retinal degeneration.Interleukin-1 (IL-1)was recognized to be involved in inherited retinal degeneration.Whether IL-1 receptor antagonist (IL-1ra) can arrest retinal degeneration is worthy of investigation.Objective This study was to investigate the effects of IL-1ra on photoreceptor apoptosis in Royal College of Surgeons (RCS) rats.Methods The use of the animals complied with the Regulations for the Administration of Affairs Concerning Experimental Animals by State Science and Technology Commission.The SPF RCS rats aged 9,15,16,25,30,35,40,50 and 60 postnatal days were collected,with 9 rats for each age group.Retinal sections were used for the TdT-mediated biotin-dUTP nick-end labeling (TUNEL) cell apoptosis assay.1 μl of IL-1ra (1.8 g/L) was intravitreally injected in the right eyes of 9 RCS rats aged 15 postnatal days and PBS was used in the same way in the fellow eyes.The injection procedure was repeated on the 20 th and 25 th day,respectively.The rats were sacrificed on the 30 th day and retinal sections were prepared for the TUNEL assay.The differences in the percentage of the positive cellular nuclei area among different ages of rats were compared by one-way ANOVA,and the differences in retinal layer thickness between IL-1ra injection group and PBS injection group were assessed by paired t test.Results Photoreceptor apoptosis appeared in 20-day-old RCS rats and progressed and peaked in 30 and 35-day-old rats and then reduced,showing a significant difference among rat of various age groups (F=28.020,P＜0.01).Images from TUNEL assay showed a weaker and less TUNEL staining in the IL-1ra injected eyes than the PBS injected eyes in 30-day-old rats.The total area and relative area of TUNEL positive nuclei were (223.052±153.092) μm2 and (2.206±1.531) ％ in the IL-1ra injected group,and those in PBS injected group were (1235.050±359.767) μm2 and (7.269± 1.624) ％,with a significant difference between them (t =4.370,t=3.250,P＜0.01).The cone and rod thickness was (15.324±9.035) μm in the IL-1ra injected group and (49.566±4.605)μm in the PBS injected group,showing a significant difference (t =22.674,P＜0.01).However,no significant difference was seen in the outer nuclear layer thickness between the two groups (t =0.268,P＞0.05).Conclusions IL-1 participates in the pathogenesis and development of inherited retinal degeneration of RCS rats.The use of IL-1ra might be a potential approach in the treatment of inherited retinal degeneration.

AIMTo study the possibility that responses of fever and discharge of neurons in PVN to intraperitoneal administration of LPS are mediated by vagal afferents.

METHODSRectal temperature of rat was detected by digital temperature detecting instrument. Glass micropipette placed in PVN was used to record unit discharges of neurons in it, before and after LPS was injected into PVN in normal rats and vagotomy rats.

RESULTSThe rectal temperature change value in vagotomy LPS group was significantly decreased compared with that in sham LPS group, and there was striking difference between them (P < 0.05). The discharges of neurons in PVN was increased in the normal rat in response to LPS. The discharges of neurons in PVN had no significant change in the vagotomy rats in response to LPS.

CONCLUSIONThe results indicate that vagus nerve may be one of the pathways of peripheral LPS signal communicating to CNS.

Animals ; Diaphragm ; innervation ; Fever ; chemically induced ; physiopathology ; Lipopolysaccharides ; Male ; Neurons ; physiology ; Paraventricular Hypothalamic Nucleus ; physiopathology ; Rats ; Rats, Wistar ; Vagotomy, Truncal

Objective To explore the maternal-fetal transmission patterns and interventional methods of syphilis during pregnancy.Methods A total of 847 cases of syphilis in pregnancy confirmed by rapid plasma reagin test(RPR)and treponema pallidum hemoagglutination test(TPHA)were treated with procaine benzylpenieillin intramuscular injection,and with erythrocin oral medication if hypersensitive to benzylpenicillin.Eight hundred forty seven cases of syphilis during pregnancy were followed up for pregnancy outcomes.And their newborn babies were tested using the RPR.The newborns with positive results were given intervention and followed up until 24 months after birth.Results(1)A total of 733 cases among the total 847 have given birth to living-babies,in which 626 cases were tested using RPR,and the positive rate was 55.1%(345/626).(2)The RPR positive rate,neonatal mortality,preterm birth rate and low birth rate in the newborn of mothers with an RPR titer higher than or at 1:8 were higher than those of mothers with an RPR titer lower than 1:8(P

To provide a scientific basis for the selection of the appropriate drying method for Mentha Haplocalyx Herba (MHH), determine 2 monoterpenes, 4 phenolic acids and 5 flavonoids in MHH by GC-MS and UPLC-TQ-MS methods, and investigate the effects of the drying methods on the changes in contents of these analytes. The qualities of products obtained with different drying methods were evaluated by the multivariate statistical method of Technique for Order Preference by Similarity to Ideal Solution (TOPSIS). Results showed that the drying methods had the greatest impact on menthol, caffeic acid, and rosemary acid, which were followed by chlorogenic acid and diosmetin-7-O-glucoside. The contents in these analytes processed with hot-air-drying method were higher than those with microwave-drying and infrared-drying methods at the same temperatures. The contents in these analytes processed under low temperature (40-45 °C) were higher than those under higher temperature (60-70 °C). Above all, the contents in phenolic acids processed with microwave fixation (exposed under microwave at 100 °C for several minutes) were obviously higher than those of not being processed, showing an inhibition of some enzymes in samples after fixation. The TOPSIS evaluation showed that the variable temperature drying method of 'Hot-Air 45-60 °C' was the most suitable approach for the primary drying processing of MHH. The results could provide the scientific basis for the selection of appropriate drying method for MHH, and helpful reference for the primary drying proces of herbs containing volatile chemical components.
Desiccation ; methods ; Flavonoids ; analysis ; Hydroxybenzoates ; analysis ; Mentha ; chemistry ; Monoterpenes ; analysis

OBJECTIVETo find out the rate of comorbidities of depression, anxiety disorder and attention deficit hyperactivity disorder (ADHD) symptoms in children with epilepsy and to analyze the relevant affecting factors and impacts on quality of life.

METHODTotally 142 children with various types of epilepsy underwent neuropsychological assessment with the Depression Self-rating Scale for Children, the Screen for Child Anxiety Related Emotional Disorders and the ADHD Rating Scale-IV, an 18-item parent-rated questionnaire based on the diagnostic criteria for ADHD, the quality of life was measured in 100 cases on antiepileptic medications by the Quality of Life in Epilepsy Inventory (QOLIE-31). The comorbidity rates were calculated using t-test, chi(2) test and multiple logistic analysis, the variables associated with psychiatric comorbidities were determined, and the impact on quality of life was analyzed.

RESULT(1) The total rate of emotional and behavioral comorbidities was 57.7% (82/142), the frequency of depressive disorder, anxiety disorder and ADHD was 14.8%, 44.4% and 17.6%, respectively. The suicidal ideation occasionally occurred in 5.6% of the cases and 0.7% of cases often had the ideation, but no suicidal action was found in any case. (2) Risk factors for the emotional and behavioral disorders: multiple logistic analysis indicated that age, gender and epilepsy illness-related variables were not relative to the comorbidities, P > 0.05, there were interactions among the disorders. (3) The impact on the quality of life: The emotional and behavioral conditions were associated with the low quality of life, which was significantly lower in epileptic children with co-morbid disorder compared to non-comorbidities epilepsy group. Especially negative impact on the total score of quality of life and four sub-items such as overall quality, emotional well-being, cognitive and social function, P < 0.001. There were also significant differences between the two groups in the other three sub-items including fear for seizure attack, energy/fatigue and medication effects (P < 0.05).

CONCLUSIONSThe frequency of emotional and behavioral disorders including depress disorder, anxiety disorder and ADHD was considerably high in children with epilepsy. Age, gender and epilepsy illness-related variables are not associated with the emotional and behavioral comorbidities, which interfere with each other. Emotional and behavioral disorder is one of the negative factors to the quality of life in epileptic patients. Neuropsychological assessment and treatment are important for improvement of the quality of life in children with epilepsy.

Attention Deficit Disorder with Hyperactivity ; epidemiology ; Child ; Child Behavior Disorders ; epidemiology ; pathology ; Comorbidity ; Emotions ; Epilepsy ; epidemiology ; psychology ; Female ; Humans ; Quality of Life ; Surveys and Questionnaires

To study the possibility of activation of vagus afferent in response to lipopolysaccharide (LPS) through interleukin-1 (IL-1), Wistar rats were randomly divided into LPS group and saline (NS) group. The expression of c-Fos, CD14 and Mac-1 were detected by immunohistochemistry staining. IL-1 bioactivity was determined by L929 cell proliferation. The expression of IL-1R I mRNA was detected by in situ hybridization. Our results showed that there were some c-Fos protein expression positive neurons in the nodose ganglion in LPS group, but no c-Fos protein expression positive neurons in the nodose ganglion in control group. The number of macrophages (M phi) in the connective tissue surrounding the abdominal vagus increased significantly in response to LPS i.p. Forty-five minutes after the application of LPS, the IL-1 bioactivity in the supernatant of M phi was increased. Positive IL-1R mRNA neurons were also observed in the nodose ganglion in the LPS group. The results indicate that vagus afferent is activated in response to LPS and that IL-1 production might be involved in the activation of vagus afferent.
Animals ; Cells, Cultured ; Interleukin-1 ; biosynthesis ; physiology ; Lipopolysaccharides ; pharmacology ; Macrophages ; drug effects ; metabolism ; Male ; Neurons, Afferent ; drug effects ; metabolism ; Proto-Oncogene Proteins c-fos ; biosynthesis ; Rats ; Rats, Wistar ; Vagus Nerve ; drug effects ; metabolism