1.Research on 3-dimentional culture of human choroidal melanoma cell line (OCM-1) in vitro and the mechanism of vasculogenic mimicry
Wen GAO ; Luxia CHEN ; Yanjin HE
Recent Advances in Ophthalmology 2017;37(9):828-831
Objective To observe vasculogenic mimicry (VM) of human choroidal melanoma cell line OCM-1 cultured in vitro and the expression of PI3K and EphA2 protein,as well as to explore the possible mechanisms.Methods OCM-1 cells were cultured in vitro and stained with periodic acid Schiff (PAS) on days 7,which aimed to observe the formation of PAS-positive cyclic structures,that is,VM formation.Then immunohistochemical staining was performed to detect PI3K and EphA2 on day 1,4,7 and the results were observed.Ressults On day 4 of 3-demintional culture,most of OCM-1 cells were polygonal and the cytoplasm was abundant;the nuclei were round and the nucleoli were visible.A small part of the tumor cells were long spindle.It was found that several long spindle cells were connected to each other to form hemicyclic structure.After 7 days,a large number of tumor cells became long spindle,growing along the collagen scaffold,and long protrusions appeared,forming a ring structure.PAS staining showed that the tumor cells were mostly arranged in a row,and tumor cells imitated the formation of body blood vessels,resulting in cell band and pipeline-like cell layers,with one layer of extracellular matrix (PAS-positive substance) making up the ring structure.Moreover,the expression levels of PI3K and EphA2 on day 4 and 7 were significantly higher than those on day 1 (all P < 0.05),and their expression levels on day 7 were higher than those on day 4 (all P < 0.05).Conclusion EphA2 and PI3K may play an important role in the VM formation in 3-dimentional culture of human choroidal melanoma cell line OCM-1.
2.Determination of Plasma Concentration of Mycophenolic Acid in Renal Transplantation Patients by HPLC-Fluoremetry
China Pharmacy 2005;0(17):-
OBJECTIVE:To determine the plasma concentration of mycophenolic acid (MPA) in renal transplantation patients by HPLC-Fluoremetry. METHODS: The sample was subjected to precipitation of proteins using 5% Zinc Sulfate methanol saturated solution,and the supernatant (20 ?L) was taken for sample injection and determination on Zorbax Eclipse XDB C18 with mobile phase consisted of acetonitrile-methanol-0.2 mol?L-1 glycine buffer(18∶2∶80,pH=9.0) at a flow rate of 1.0 mL?min-1. The column temperature was of 25℃;the excitation wavelength(EX) was 342 nm and the emission wavelength(EM) was 425 nm. RESULTS: The linear range of MPA was 0.5~40 mg?L-1,with its lowest limit of quantitation at 0.5 mg?L-1. The methodology recovery was 98.23%~101.00%;the extraction recovery of MPA was 91.56%~94.46%;the intra-day RSD was 0.64%~3.22% and the inter-day RSD was 5.12%~6.10%. CONCLUSION: The method is sensitive,rapid,accurate,convenient,and applicable for the quantitative determination of plasma concentration of MPA in renal transplantation patients.
3.Discrimination method of large log-likelihood study in differential diagnosis of pulmonary diffuse mild micronodule
Budong CHEN ; Daqing MA ; Wen HE
Chinese Journal of Radiology 2000;0(12):-
Objective To analyze HRCT and thin-slice CT scan findings in 150 patients with pulmonary diffuse mild micronodule, and to find the features with the purpose of identifying random micronodule, peri-lymphatic micronodule, and centrilobular micronodule. Methods The useful features in 150 patients with pulmonary diffuse mild micronodule were translated into scores by means of discrimination method of large log-likelihood to identify the micronodular category. Results The accuracy of diagnosis was 94.0% for random micronodule, 76.0% for peri-lymphatic micronodule, and 90.0% for centrilobular micronodule. Conclusion HRCT and thin-slice CT scans were helpful in differential diagnosis of pulmonary diffuse mild micronodule. The discrimination method of large log-likelihood was propitious to diagnosis and differential diagnosis.
4.Progress of Application of Health Education in Pulmonary Rehabilitation for Chronic Obstructive Pulmonary Disease (review)
Fei HE ; Wen ZHANG ; Wenhua CHEN
Chinese Journal of Rehabilitation Theory and Practice 2014;20(11):1041-1046
Chronic obstructive pulmonary disease (COPD) with high morbidity and mortality has become a major public health problem.Health education can improve the quality of life in patients with COPD, and reduce the number of exacerbations and cost due to repeated hospitalizations. There is no unified conclusion in content, manner, time for health education. There are large number of patients with COPD in China. Patients are generally poorly aware of the disease, and need various content and form of education, which can't meet for lack of knowledge and less focus on health education of medical workers. Many new progresses are emerging, such as the commonwealth of education, integrity and improvement of education, and enhancement of the educators.
5.Analysis of Nosocomial Deep Mycosis in Our Hospital
Jun CHEN ; Pingkang WEN ; Huiyang CHEN ; Xuping HE ; Yi XIE
China Pharmacy 2001;0(09):-
OBJECTIVE:To prevent and reduce the occurrence of nosocomial deep mycosis.METHODS:The medical records of patients with nosocomial deep mycosis in the period from January2001to December2002in this hospital were ret?rospectively analysed.RESULTS:There were43patients with nosocomial deep mycosis,which accounted for10.54%of all nosocomial infections in the same period.The predilection sites were respiratory tract(34.88%)and digestive tract(30.23%). The main pathogen was Candida albicans(77.78%).All patients had serious underlying diseases and were treated with broad-spectrum antibiotics,and some of them had received adrenocortical steroids.CONCLUSION:Rational use of broad-spectrum antibiotics and adrenocortical steroids is the most important way to prevent deep mycosis and improve the prognosis.
6.Clinical observation on the relation between tongue petechia and gynecologic tumor and dysmenorrhea
Seehong LAI ; Shaodong CHEN ; Kuanqi HE ; Lanling WEN ; Yanhui WANG
International Journal of Traditional Chinese Medicine 2010;32(2):117-118
Objective To discuss the relation between gynecologic tumor and dysmenorrheal and tongue petechia, make clear the diagnostic value of tongue petechia in gynecology department tumor and dysmenorrheal, and provide theoretic basis for diagnosing gynecologic diseases by TCM. Methods A total of 169 patients with gynecologic tumor and dysmenorrheal were set as a treatment group, and a total of 211 patients who excluded the tongue signs of gynecologic tumor and dysmenorrheal were set as a control group. Tongue petechias were identified and compared between the two groups. Results ①Probability of tongue petechia showed a significantly higher value in the treatment group than the control group. (P<0.01) ; ②Probability of tongue petechia showed a significantly higher value of patients with tumor in the treatment group than patients with other gynecologic diseases in the control group (P< 0.05) ; ③Probability of tongue petechia showed a significantly higher value of patients with dysmenorrhea in the treatment group than patients with other gynecologic diseases in the control group (P<0.01). Conclusion ①Relevant researche of gynecologic tumor, dysmenorrheal and tongue petechia at the tip of tongue was based on TCM theory, diagnostics and clinical experiences. The data of this study has proven this diagnostic method.②Compared with other kinds of diseases, gynecologic tumor and dysmenorrheal showed a higher probability in the appearance of tongue petechia. Therefore, petechia at the tip of tongue can be used as one of diagnostic references for gynecologic tumor and dysmenorrheal.
7.Effects of different doses of dexmedetomidine administered intranasally on median effective concentration of sevoflurane inhibiting responses to laryngeal mask airway insertion in pediatric patients
Hongxin JI ; Shiqiong HE ; Wen CHEN ; Wenbing LI ; Anxue LI
Chinese Journal of Anesthesiology 2015;35(11):1365-1367
Objective To evaluate the effects of different doses of dexmedetomidine administered intranasally on the median effective concentration (EC50) of sevoflurane inhibiting responses to laryngeal mask airway (LMA) insertion in the pediatric patients.Methods American Society of Anesthesiologists physical status Ⅰ or Ⅱ pediatric patients of both sexes, aged 1-3 yr, with body mass index of 20-25 kg/m2, scheduled for elective surgery under general anesthesia, were randomly divided into 3 groups: control group (group C) , dexmedetomidine 1 μg/kg group (group D1) , and dexmedetomidine 2 μg/kg group (group D2).In D1 and D2 groups, dexmedetomidine 1 and 2 μg/kg (in 1 ml of normal saline) were administered intranasally at 1 h before induction of anesthesia, respectively.Group C received the equal volume of normal saline administered intranasally.The children were separated from their parents at 45-60 min after intranasal administration and admitted to the operating room.The children inhaled 8% sevoflurane until they lost consciousness.After loss of consciousness, the end-tidal concentration of sevoflurane was determined using the modified Dixon's up-and-down method.The initial end-tidal concentration of sevoflurane was set at 2%.The concentration was increased/decreased by 0.2% in the next patient according to the response to LMA insertion.The patient's sedation status and with LMA acceptance were evaluated, and the patient's satisfaction with sedation and with LMA acceptance was recorded.Probit analysis was used to calculate the EC50 and 95% confidence interval of sevoflurane inhibiting responses to LMA insertion.Results The patient's satisfaction with sedation and with LMA acceptance was significantly higher in D1 and D2 groups than in group C, and in group D2 than in group D1 (P<0.05).The EC50 (95% confidence interval) of sevoflurane inhibiting responses to LMA insertion was 2.03% (1.91%-2.15%), 1.76% (1.65%-1.87%) and 1.63% (1.53%-1.73%) in C, D1 and D2 groups, respectively.The EC50 was significantly lower in D1 and D2 groups than in group C, and in group D2 than in group D1 (P<0.05).Conclusion Dexmedetomidine 1 and 2 μg/kg administered intranasally can decrease the EC50 of sevoflurane inhibiting responses to LMA insertion in the pediatric patients, and 2 μg/kg produces better efficacy.
8.Application of anatomic segmental hepatectomy in treatment of left hepatolithus
Xinwei HE ; Hui ZHAO ; Jun WEN ; Shaoyi CHEN ; Xingmu LIU
Journal of Regional Anatomy and Operative Surgery 2016;25(6):416-419
Objective To investigate the application value of anatomic segmental hepatectomy in treatment of left hepatolithus.Methods The 80 patients with left hepatolithuswere divided into the control group (n =40)and the observation group (n =40)in accordance with dif-ferent surgical methods,and they were given traditional surgery and precise pedicle anatomic segmental hepatectomy respectively.Operation index levels,postoperative complications and stress reaction levels before and after surgery of the two groups were compared.Results The blood loss,operative time,the time of drainage tube remove,time of analgesic drug use,and postoperative hospital stay of the observation group were significantly less than the control group,and the difference was statistically significant (P <0.05).The rate of postoperative com-plications was 17.50% in the control group,while it was 15.00% in the observation group,which showed no significant difference between the two groups (P >0.05).During the surgery,epinephrine,cortisol,IL-6 and CRP levels of patients decreased after a slight increase, while NK cell levels of patients decreased firstly and then increased.There were statistically significant differences in trems of the above inde-xes immediately after surgery to 24 hours after surgery (P <0.05),and the rangeability of the observation group was less than the control group (P <0.05).Until 48 hours after surgery the above indexes recovered to the preoperative level.Followed up for 3 to 24 months,the calculi recurrence rate and abdominal ache recurrence rate of the observation group were lower than the control group,and the difference was statistically significant(P <0.05).Conclusion Precise pedicle anatomic segmental hepatectomy applied in the treatment of left hepatolithus showed makedly curative effect,and it has little effect on the stress response of patients.
9.Correlation between diabetic distress and coping styles among patients with type 2 diabetes
Xinxin HE ; Wen XIE ; Jingyu CHEN ; Hongyu LOU ; Renjie LI
Modern Clinical Nursing 2016;15(8):1-5
Objective To investigate the correlation between diabetic distress and coping styles among patients with type 2 diabetes. Method One hundred inpatients with type 2 diabetes were engaged in the investigation of their diabetes distress and coping styles by the diabetes distress scale (DDS) and medical coping modes questionnaire (MCMQ) and the correlation between them. Results The average score of diabetic distress was (2.17 ± 0.71), which was at mild level. 57%of them were at the higher level of diabetic distress. Confrontation and avoidance dimensions were lower than the norm in coping styles, and the acceptance dimension was higher than the norm (all P<0.01). The average scores of diabetic distress, regimen-related distress and physician-related distress subscales were negatively correlated with confrontation (all P<0.05). The average score on diabetic distress and the subscales were positively correlated with avoidance and acceptance dimension (all P<0.01). Conclusions Diabetic distress is prevalent in type 2 diabetic patients and the degree of positive coping is still not insufficient. The diabetic distress is negatively correlated to the confrontation, and positively correlated to the avoidance and the acceptance dimension. The medical staff should instruct the patients to adopt positive coping styles, and avoid negative coping styles to reduce diabetic distress. It will be conductive to the physical and mental rehabilitation of the patients as well.
10.Research progress of relevance between miRNAs and hepatocellular carcinoma
Jialing SUN ; Bin WEN ; Haitao SUN ; Guanxin CHEN ; Songqi HE
Chinese Pharmacological Bulletin 2017;33(4):445-449
Hepatocellular carcinoma(HCC)is one of the most common malignancies worldwide.Due to the difficulty of diagnosis in the early stage of HCC, most HCCs are diagnosed in intermediate-advanced stage.Moreover, the high invasion, metastasis and recurrence rate of HCC result in the high mortality of HCC.MicroRNAs(miRNAs) are a class of highly conserved, endogenous, small, non-coding ,single stranded RNA with the length of 22 nucleotides.There are plentiful of miRNAs in liver.MiRNAs not only can regulate the growth and development of liver, but also are closely related to the formation of HCC.In the process of HCC formation, miRNAs could function as oncogenes or tumor suppressor genes to regulate multiple biological processes related to HCC, including cell differentiation,proliferation,tumorigenesis,angiogenesis,invasion,and metastasis.With the intensive study of molecular mechanisms of miRNAs in the process of HCC formation, increasingly studies have revealed that miRNAs could become sensitive biomarkers and effective therapeutic targets for HCC.