Objective The petiole of Eleutherococcus senticosus was used as somatic embryo,which is widely original plants with the pharmacological active components whose contents could be determined,the somatic embryo in E.senticosus was studied,the aim of this study is to provide the proof of E.senticosus species which have the higher yield of pharmacological active components.Methods Using the petiole of E.senticosus of three years old plants germinated somatic embryos within 15 d to observe the somatic embryogenesis of E.senticosus with the 2,4-D+BA medium.Results After cultured for 28 d with 2,4-D 1.5 mg/L+BA 1.0 mg/L,71.4% of the petiole somatic embryos were directly produced or 8.5 embryos in total were produced via callus.Both of the two methods could be used in the elicitation medium,but the percentage of indirect production was smaller.After transforming into the same or the lower concentration of 2,4-D medium,the somatic embryos gradually matured.At the same time,those of the new somatic embryos were also produced,the percentage of the somatic embryos which were produced by indirect way was increased with it.Conclusion Using the petiole of E.senticosus germination within 15 d could make somatic embryogenesis.It confirms that the somatic embryogenesis and the bodybmeryos inductivity depend on the 2,4-D and BA concentration.

Objective To explore the distribution and drug resistance of pathogen in hospitalized tumor patients and to provide reference for the clinical reasonable use of antibiotics and strengthening the hospital infection control. Methods 6 500 clinical speciments were tested in hospitalized tumor patients from January to December,2013.The drug susceptibilities were tested by automated microbiology system or Kirby-Bauer disk dilution method.Drug susceptibility tests were evaluated according to CLSI standard 2012.WHONET5.6 software data were used to analyze the data.The clinical distribution and the resistance results of bacterial were analyzed retrospectively. Results A total of 2 093 strains of pathogens were isolated from 6 500 clinical speciments,among these strains, the gram-negative bacteria accounted for 55.23%,the gram-positive bacteria accounted for 11.08%,and the fungi accounted for 33.68%.Klebsiella pneumoniae,Escherichia coli,Pseudomonas aeruginosa ranked the top three species of pathogens, accounting for 16.63%, 9.60%, and 7.98%, respectively. Staphylococcus aureus, Candidaalbicans ranked the first place of gram-positive bacteria and fungi,respectively.The antibiotic resistance of Escherichia coli was strong in Enterobacteriaceae, and its resistance rates to penicillins,cephalosporins, and quinolones were more than 60%.Of the Staphylococcus,the methicillin-resistant Staphylococcus aureus(MRSA) accounted for 10.00% and the coagulase-negative Staphylococcus (MRCNS)accounted for 87.10%.There was no vancomycin resistant Staphylococcus aureus and coagulase-negative Staphylococcus detected. Enterobacteriaceae strains were found most sensitive to imipenem;gram-positive bacteria were found most sensitive to vancomycin. Conclusion The hospitalized tumor patients are susceptible to pathogens, and the gram-negative bacteria are the predominant isolated pathogen.Etiology inspection and monitoring of antibiotics sensitivity provide experimental basis for clinical infection control and prevention.

Objective To obtain in situ pairing of the variable region genes of the immunoglobulin heavy and light chains of B cells from vitiligo patients. Methods Fifty vitiligo patients were screened by a live melanocyte enzyme-linked immunoabsorbent assay. The sera from seven patients were proved to be strongly positive. Then CD19+ B cells were isolated from the peripheral blood lymphocytes of the 7 patients, then fixed in 10% buffered formaldehyde and permeabilised by Proteinase K. The mRNA was amplified within the cells by reverse transcription-polymerase chain reaction (RT-PCR) with specific primers. The immunoglobulin VH and VL DNA assembled within the same cells using the Cre/loxP system. Nested primers were designed to amplify the known major human VH and VL gene familes. Result A unique 800bp band was obtained corresponding in size to single chain Fv fragments. Conclusion The in situ pairing of the variable region genes of the immunoglobulin heavy and light chains of B cells is obtained from vitiligo patients by in-cell PCR.

Objective To explore the effects of NF-E2-related factor 2 (Nrf2) overexpression on mitochondrial biosynthesis and function in melanocytes.Methods An immortalized human vitiligo melanocyte cell line PIG3V was used in this study.An overexpression plasmid Nrf2-pEX-1 containing the full-length Nrf2 gene was constructed.PIG3V cells were divided into 3 groups:blank group receiving no treatment,control group transfected with the pEX-1 plasmid,overexpression group transfected with the Nrf2-pEX-1 plasmid.After transfection,real-time quantitative reverse transcription-PCR (RT-PCR) and Western blot were performed to determine the mRNA and protein levels of mitochondrial biosynthesis-related factors (including Nrf2,nuclear respiratory factor 1 (NRF1) and mitochondrial transcription factor A (TFAM)) respectively;RT-PCR was also conducted to measure the copy number of mitochondrial DNA (mtDNA),and flow cytometry to estimate mitochondial membrane potential (MMP);luciferase reporter system was used to estimate the intracellular adenosine triphosphate (ATP) level.Statistical analysis was carried out by using a two-sample t-test.Results After transfection,a significant increase was observed in the mRNA expression levels of Nrf2 and NRF1 at 24 hours (both P ＜ 0.001) and in those of Nrf2 and TFAM at 48 hours (both P ＜ 0.05),but no significant change was noted in the mRNA expression level of TFAM at 24 hours (P ＞ 0.05) or in that of NRF1 at 48 hours (P ＞0.05) in the overexpression group compared with the control group.In the case of Nrf2,NRF1 and TFAM protein levels,the overexpression group showed significant increases compared with the control group at 48 hours after transfection (all P ＜ 0.05),while no significant difference was noted between the two groups at 24 hours.Compared with the control group,MMP in the overexpression group increased by 2.313％ at 24 hours (t =5.546,P =0.005) and by 14.872％ at 48 hours (t =8.537,P =0.001) after transfection.Both the relative copy number of mtDNA and ATP level were similar between the overexpression group and control group at 24 hours after transfection (both P ＞ 0.05),but significantly higher in the overexpression group than in the control group at 48 hours (t =5.760,P =0.005;t =22.040,P =0.008).Conclusion Up-regulation of Nrf2 pathway can improve mitochondrial function and biosynthesis in PIG3V cells likely by promoting the expressions of mitochondrial biosynthesis-related genes and proteins.

Objective To identify the pathogen of an acute epidemic gastroenteritis outbreak in newborn room. Methods Forty five samples were collected from 38 newborn patients at the peak of a diarrhea outbreak, which happened in a newborn room in Inner Mongolia Autonomous Region during December 2008 to February 2009. The presence of rotavirus antigen, Adeno-like virus antigen and Astrovirus antigen were detected by enzyme-linked immunosorbent assay (ELISA). The presence of Astrovirus RNA were detected by reverse transcriptase polymerase chain reaction (RT-PCR) with universal primer of Astrovirus. Thirteen samples positive for Astrovirus nucleic acid were analyzed by sequencing and phylogenetic tree. Four samples positive for both Astrovirus antigen and Astrovirus nucleic acid were observed by immune electron microscopy. Results Both rotavirus antigen and Adeno-like virus antigen were negative in 45 faecal samples. Thirty samples were positive for Astrovirus antigen when checked by ELISA, which resulted in a positive rate of 66.7%. Thirty-one samples were positive for Astrovirus RNA when check by RT-PCR, which resulted in a positive rate of 68.9%. The genotype results confirmed all patients were infected with genotype 1 Astrovirus. The gene sequences of thirteen samples were compared with reference strains of Astrovirus type 1 in GeneBank and the homology rate of nucleotide sequence was 90.9 %- 96.3 %. The homology rate of intra these thirteen sample was 94.7%-100.0%. Four positive samples were randomly selected and observed by immune electron microscopy and a large amount of Astrovirus particles were found in two of these samples. Conclusion Genotype 1 Astrovirus is the pathogen of this diarrhea outbreak in newborn.

Background and purpose:Radiotherapy is the main method to manage head and neck tumors.About half of the patients with malignant tumor in head and neck could obtain long term survival through radiotherapy or other therapy combined with radiotherapy.However,it is necessary to clinically detect whether carotid stenosis is a major sequela of head and neck irradiation,especially in long term survivors such as patients with nasopharyngeal carcinoma.We analyzed this injury and the degree of carotid stenosis,and its related factors to provide information to reduce and delay the incidence of this injury.Methods:We analyzed the degree of arterial stenosis of the nasopharyngeal carcinoma patients who received radiotherapy and had survived more than three years in Cancer Hospital Fudan University,compared with newly diagnosed as nasopharyngeal carcinoma before radiotherapy.The degree of carotid artery injury was observed and the clinical factors which affect its occurrence and development.All patients were low differentiated squamous cell carcinoma confirmed by pathology.All patients were examined with color doppler ultrasound to detect the carotid artery.The main end points were the diameter of carotid artery,the peak systolic and end diastolic velocities.Results:Arterial stenosis was more common in the reserch group than the control group(80% vs 20%,P＜0.001).The common and internal carotid arteries were most commonly involved(70% vs 20%,P＜0.001;6313% vs 10%,P＜0.001),followed by the external carotid artery(30% vs 3.3%,P=0.015).Significant stenosis was only found in the research group,common carotid arteries 36.7%,internal carotid arteries 23.3%,external carotid arteries10%.Conclusion:This study showed that radiation could cause significant carotid stenosis in nasopharyngeal carcinoma patients who had received radiotherapy more than 3 years previously.Carotid stenosis developed more frequently in the common carotid artery and intemal carotid artery on the side that had received radiotherapy.

Objective To study the role of IL-18 in the pathogenesis and treatment of ulcerative colitis (UC). Method An enzyme-linked immunosorbent assay (ELISA) was utilized to detect the serum IL-18 level of 58 UC patients. Results The serum IL-18 level in acute period of UC patients was significantly higher than that in control ones(P < 0.05 ). There was no significant difference between remisson period of UC and control ones (P> 0.05). The serum IL-18 level was closely related with the degree of UC (P < 0.05),the mean concentration of serum IL-18 was significantly higher in patients with severe ulcerative colitis [ (392.78 ± 50.17)pg/ml]than in patients with mild colitis ulcerative [ (138.92 ± 23.41 )pg/ml]and in control ones. Serum IL-18 in active ulcerative colitis were positively related to clinical disease severity and activity or laboratory parameters,including CAI,serum CRP,erythrocyte sedimentation rates,or total leukocyte counts (r = 0.775,0.705,0.662,0.625,P < 0.01 ). The level of IL-18 was declined after treatment with corticoids(P< 0.05). Conclusions IL-18 might play an important role in the pathogenesis of UC. The measurement of IL-18 is helpful to estimate the disease activity of UC and it may be considered as laboratory and activity criteria for UC.

Objective:To investigate the clinical significance of grip strength, three simple lung functions[functional volume capacity(FVC), forced expiratory volume in the first second(FEV1)and peak expiratory flow(PEF)], 6-minute walking distance test(6MWD)and left ventricular ejection fraction(LVEF)for assessing overall integrative function in elderly versus non-elderly patients with coronary artery disease(CAD).Methods:A total of 35 hospitalized CAD patients aged 70.4±10.6 years from January 2017 to December 2018 were retrospectively enrolled.Patients were divided into the non-elderly group(<65 years, n=8)and the elderly group(≥65 years, n=27). FVC, FEV1 and PEF were tested by a portable lung function machine.The grip strength, 6MWD, three simple lung functions(FVC, FEV1, PEF), LVEF and echocardiography were detected after admission.The above indexes were re-examined in outpatient clinic at 3 months after discharge.The results of above indexes were compared at admission versus at three months after discharge.The consistency and correlation between FVC, FEV1, PEF, 6MWD, grip strength and LVEF were analyzed.Results:The detected results of FVC, FEV1, PEF, 6MWD, left-hand grip strength, right-hand grip strength and LVEF showed no significant difference at admission versus at 3 months after discharge( P>0.05)in a total of 35 hospitalized CAD patients.Pearson bivariate correlation analysis showed that FVC, FEV1, PEF, left-hand and right-hand grip strength had pairwise correlation between them( P<0.01).6MWD had no correlation with LVEF.And LVEF was related with FVC and FEV( P<0.01), but not related with PEF, 6MWD and grip strength( P>0.05). The detective values of FVC, FEV1, PEF, 6MWD, left-hand and right-hand grip strength were lower in the elderly group than in the non-elderly group[(2.11±0.66 )L vs.(2.88±0.55) L, (1.74±0.46 )L vs.(2.62±0.49 )L, (5.50±1.79 )m/s vs.(8.22±1.59) m/s, (332.07±115.58)m vs.(446.14±99.81 )m, (25.14±7.87) vs.(35.15±8.30), (27.37±8.39 )kg vs.(38.37±10.20)kg, P<0.01]. LVEF had no significant difference between the two age groups. Conclusions:FVC, FEV1, PEF, 6MWD and grip strength are lower in elderly group than in non-elderly group.A comprehensive set of tests of grip strength, three simple lung function and 6MWT is helpful to evaluate the overall integrative function in elderly CHD patients.

Objective The metabolism and excretion of isochlorogenic acid B in rats were investigated by UHPLC-MS.Methods Feces,urine and plasma were individually collected before and at different time points after administration of 20 mg·kg-1.Post-prepared samples were analyzed by UHPLC-MS.Results According to the retention times,m/z,characteristic fragment ions and related literature,a total of 22 metabolites were detected,of which 18 metabolites were present in rat feces,3 metabolites in urine and one metabolite in plasma.The main metabolic pathways contain hydrolysis,hydrogenation,methylation,sulfation and so on.The cumulative excretion of isochlorogenic acid B and its main metabolite chlorogenic acid in feces and urine was further performed.Conclusion The metabolism and excretion of isochlorogenic acid B in rats were explored to provide experimental basis for its further research and development.

Purpose: This study aimed to investigate reproductive concerns among breast cancer patients of reproductive age, analyze the influencing factors, explore the relationship between coping styles, fear of progression (FOP), and reproductive concerns, and identify the multiple effects of coping styles on the relationship between FOP and reproductive concerns among Chinese breast cancer patients. Methods: A cross-sectional, descriptive study was conducted among breast cancer patients in four tertiary grade A hospitals in Fujian, China, from January 2022 to September 2022. A total of 210 patients were recruited to complete paper-based questionnaires, which included the general data questionnaires, the Reproductive Concerns After Cancer Scale (RCACS), the Fear of Progression Questionnaire-Short Form (FOP-Q-SF), and the Medical Coping Modes Questionnaire (MCMQ). Structural equation models were utilized to evaluate the multiple effects of coping styles on FOP and reproductive concerns. Results: Reproductive concerns in breast cancer patients had a mean score of 53.02 (SD, 10.69), out of a total score of 90, and coping styles for cancer (confrontation, avoidance) were closely associated with FOP and reproductive concerns. FOP showed a significant positive correlation with reproductive concerns (r = .52, p < .01). At the same time, confrontation was significantly negatively correlated with both FOP (r = −.28, p < .01) and reproductive concerns (r = −.39, p < .01). Avoidance was positively correlated to both FOP (r = .25, p < .01) and reproductive concerns (r = .34, p < .01). The impact of FOP on reproductive concerns is partially mediated by confrontation and avoidance, with effect sizes of .07 and .04, respectively. These mediating factors account for 22.0% of the total effect. Conclusions The FOP directly impacted reproductive concerns, while coping styles could partially mediate the association between FOP and reproductive concerns. This study illustrates the role of confrontation and avoidance in alleviating reproductive concerns, suggesting that it is necessary to focus on the changes in reproductive concerns among reproductive-age breast cancer patients. Healthcare professionals can improve disease awareness and reduce patients' FOP, thereby promoting positive psychological and coping behaviors and ultimately alleviating reproductive concerns.