1.The neutral amino acid transporter ASCT2 in intestinal brush-border membrane:molecular and functional characteristics
Qian HUANG ; Ning LI ;
Parenteral & Enteral Nutrition 1997;0(04):-
ASCT2 is a Na+-dependent neutral amino acid transporter in brush-border membrane of intestinal epithelial cells.The activity accounts for the majority of intestinal luminal neutral amino acid absorption,such as alanine,serine,cysteine,threonine,glutamine,asparagine and so on.The study about molecular and functional characteristics of ASCT2 will help to the understanding of bowel function,and offer the potential for developing new treatments for short bowel syndrome and other bowel dysfunction conditions.
3.Lactobacillus acidophilus inhibits expression of IL-6 and IL-8 in Caco-2 cells induced by TNF-α
Bin WANG ; Qiurong LI ; Qian HUANG ; Ning LI ; Jieshou LI
Chinese Journal of Microbiology and Immunology 2009;29(1):33-36
Objective To investigate the effect of live Lactobacillus acidophilus on Caco-2 cells to release pro-inflammatory cytokines IL-6 and IL-8.Methods Caco-2 cells were cultured for 2 h with live Lactobacillus acidophilus strain 1950103-12 and examined by reverse transcription-PCR for IL-6 and TNF-α induced IL-8 expression.An enzyme-linked immunosorbent assay was used to quantitate secreted IL-6 and IL-8.Results Lactobacillus acidophilus strain 1950103-12 had no ecffect on the mRNA expression and production of IL-6 and IL-8 in the Caco-2 cells.A significant mRNA expression and production of IL-6 and IL-8 by the Caco-2 cells were detected after exposure to TNF-α.Lactobacillus acidophilus strain 1950103-12 down-regulated IL-6 and IL-8 mRNA expression and inhibited constitutive synthesis by Caco-2 cells of IL-6 and IL-8 that induced by TNF-α.Conclusion Lactobacillus acidophilus strain 1950103-12 has potent direct anti-inflammatory activity on human epithelial cells.
4.Expression of type Ⅰ interferon in monocyte-derived dendritic cells after Toll like receptor 3 triggered in patients with chronic hepatitis B
Yujie ZHANG ; Guangfeng SHI ; Qian LI ; Ning LI ; Mingquan CHEN
Chinese Journal of Infectious Diseases 2009;27(6):343-347
Objective To detect the expression of type Ⅰ interferon in monocyte-derived dendritic cells(MoDCs)after Toll like receptor(TLR)3 triggered in patients with chronic hepatitis B(CHB),and to evaluate immune responses of CHB patients and its roles in the mechanisms of persistent infection of hepatitis B virus(HBV)and chronicity of hepatitis.Methods Peripheral blood mononuclear cells(PBMCs)were isolated and purified using magnetic beads(plasma was saved simultaneously)from 26 CHB patients and 18 healthy volunteers(HV).Dendritic cells(DCs)were induced and proliferated in a culture medium with recombinant human granulocyte macrophage colony stimulating factor(rhGM-CSF)and recombinant human interleukin(rhIL-4).EX3s were stimulated with Poly Ⅰ:C and the supernatants were collected at 0 h and 24 h after stimulation.Type Ⅰ interferon(IFN-α and IFN-β)in plasma and supernatants were examined by enzyme linked immunosorbent assay (ELISA).Results The levels of type Ⅰ interferon in plasma were not significantly different in groups of HV and CH B.IFN-α and IFN-β expressions in supernatants before Poly Ⅰ:C stimulation were(80.00±16.15)ng/L,(36.39±13.90)ng/L in CHB group and(76.76±15.90)ng/L,(37.14±13.68)ng/L in HV group,respectively.And there were no statistical differences between two groups(t=1.651,t=0.178;both P>0.05).IFN-α expressions in supernatants at 24 h after stimulation in two groups were both higher than those before stimulation(at 0 h),but there were no statistical differences(t=1.534,t=1.243;both P>0.05).IFN-β expressions in supernatants at 24 h after stimulation in HV group was(54.57±16.80)ng/L,which was significantly higher than that at 0 h(37.14±13.68)ng/L(t=4.061,P<0.05).However,there was no significant difference at 24 h than tht at 0 h in CHB group(t=1.796,P>0.05).At 24 h after stimulation.IFN-β level was(54.57±16.80)ng/L in HV group,which was significantly higher than that[(41.64±12.57)ng/L]in CHB group(t=2.921,P<0.05).Conclusions Functions of MoDCs from CHB patients are impaired and MoDCs could not express type Ⅰ interferon normally.Expression of type Ⅰ interferon after TLR3 triggered in CHB patients is mainly IFN-β.
5.Expression of Toll-like receptor 3 on the peripheral blood dendritic cells after stimulated by poly I: C in patients with chronic hepatitis B
Qian LI ; Mingquan CHEN ; Ning LI ; Yujie ZHANG ; Guangfeng SHI
Chinese Journal of Infectious Diseases 2009;27(12):733-737
Objective To elucidate the expression of Toll-like receptor 3 (TLR3) on dendritic cells(DCs) in patients with chronic hepatitis B (CHB), and to explore the correlation between hepatitis B virus (HBV) persistent infection and TLR3 expression. Methods Sixty CHB patients (CHB group) and 20 healthy controls (control group) were enrolled. The peripheral blood mononuclear cells (PBMCs) were isolated and CD14~+ monocytes were sorted by immunomagnetic beads. Immature DCs (imDC) were induced and proliferated in vitro and mature DCs (mDC) were obtained after the poly I:C stimulation. The expression of intracellular TLR3 mRNA was detected by real-time polymerase chain reaction (PCR), and surface markers [CD80 and human leucocyte antigen (HLA)-DR] were determined by flow cytometry after 48 h of stimulation. The comparison of quantitative data was done using t test. The qualitative data were compared using chi-square test.Results The mean fluorescence intensities (MFI) of intracellular TLR3 of imDC before poly I:C stimulation in CHB group and control group were 1212.05 ± 250.80 and 1192.95 ± 301.40,respectively, which were not significantly different (t = 0. 280, P>0. 05). While after stimulation,those were 1352.98± 313.67 and 1593. 00± 349. 65, respectively, the latter was significantly higher than the former (t = 2. 880, P<0. 05). The levels of TLR3 mRNA inside mDCs in both groups were increased after poly I:C stimulation, which were 0. 1204 ±0.0267 and 0. 1780 ± 0.0664, respectively in CHB group and control group, and that in control group was significantly higher (t = 3. 909, P<0.05). Furtherly, patients in CHB group were divided into HBeAg(+ ) and HBeAg( -) subgroups.After stimulation, the MFI and mRNA of TLR3 inside mDC were greatly elevated in both subgroups,but there were no difference between these two subgroups (t = 0. 366, P>0. 05). Conclusions The intracellular expressions of TLR3 in mDC in CHB group and control group are obviously increased after the poly I:C stimulation, but the increased level in CHB group is lower than that in control group. The results suggest that the insufficiency of TLR3 synthesis may be related to the HBVpersistent infection.
6.Primary discussion of qualitative and quantitative recognition on deqi after acupuncture: a study report of West China School of Medicine.
Hui PAN ; Yu ZHAO ; Jia LI ; Qian WEN ; Ning LI
Chinese Acupuncture & Moxibustion 2015;35(1):67-71
OBJECTIVETo determine the recognition of healthy medical students on deqi after acupuncture, reveal the qualitative and quantitative rules of deqi and understand whether these rules are the factors of the clinical application of acupuncture therapy.
METHODSThe class questionnaires were used for the investigation study on the understanding of deqi after acupuncture at Hegu (LI 4) or Zusanli (ST 36) in 86 healthy students in the clinical medicine class.
RESULTS(1) Deqi was a kind of complicated compound feelings, with many sensation qualities such as distending pain, distension and pain. (2) Deqi was a kind of mild and moderate sensations. In 10-score credit sys tem of Massachusetts General Hospital acupuncture sensation scale (MASS), the scores of distending pain (4.69 +/- 2.83), distension (4.39 +/- 2.91) and soreness and distension (3.93 +/- 2.93) were around 5 (moderate degree), the scores of stabbing pain (1.89 +/- 2.02) were around 2 (mild degree). (3) The differences in the quantitative scores were significant for stabbing pain, distending pain, distention, soreness and distention and the others before and after treatment (all P<0.05).
CONCLUSIONDeqi of acupuncture is the mild and moderate complicated sensations manifested as distension, soreness, pain and numbness. As the invasive therapy, the filiform needle puncture will bring a certain psychological impacts on the receptors. The subjective sensation is possibly the factor for the patients' selection of acupuncture treatment.
Acupuncture Points ; Acupuncture Therapy ; instrumentation ; methods ; Adult ; China ; Female ; Humans ; Male ; Needles ; Qi ; Schools, Medical ; Sensation ; Young Adult
7.Clinicopathological analysis of primary liposarcoma of the orbit
Ying-Di, HA ; Qin-Jun, SU ; Zhen, QIAN ; Ning, LI
International Eye Science 2008;8(4):658-660
AIM: To investigate the clinicopathological features of orbit primary liposarcoma. METHODS: By means of histological, ultrastructural and immunohistochemical studies, the clinical and pathological features of two cases of orbit primary liposarcoma were analyzed and compared with 6 cases of primary retroperitoneum liposarcoma. RESULTS: Two cases of orbit primary liposarcoma were young persons. The majority of cases of primary retroperitoneum liposarcoma were aged over 40 years. The tumors were located at the retrobulbar region, and involved the wall of eyeball and optic nerve. The tumor cells of case 1 were round, with abundant eosinophilic granules in the cytoplasm, and there were lipoblasts in the tumor cells of two cases. Local recurrence following excision occurred in case 2.Immunohistochemical expression of S100 protein was positive in all cases, and CK (AE1/AE3), desmin, MyoD1, melanoma were negative. Ultrastructure observation showed lipid drops in the tumor cells in case 2 of orbit primary liposarcoma. CONCLUSION: Primary liposarcoma of the orbit may recur.The diagnosis was based on histological,ultrastruc-tural observation and immunohistochemical staining.
8.Clinical characteristics and surgical management in A-pattern exotropia
Ning, DONG ; Long-Qian, LIU ; Ping-Hui, LI
International Eye Science 2006;6(5):999-1001
AIM: To survey the pathogenesis, clinical characteristics and surgical treatment for the correction of A-pattern exotropia.METHODS: The case history and surgical effect of 62 A-pattern exotropia in 1825 strabismus were studied. The superior oblique muscles weakening or the horizontal muscles procedures were performed in all patients according to the dysfunction of the superior oblique muscles, horizontal deviation, with or without binocular vision. Follow-up after surgery was 6-18months with mean duration of 9 months.RESULTS: A-pattern exotropia accounts for 3.4% of all strabismus. A-pattern exotropia accounts for 21.2% of A-V syndrome. After surgery, 52 cases got alignment, 56 cases gained A-sign correction and 54 cases recovered binocular vision.CONCLUSION: A-pattern exotropia is a common type in strabismus, its etiology is mainly oblique muscle dysfunction.Different surgical procedures should be selected according to overaction degrees of oblique muscle and binocular vision function, which can acquire the satisfied results.
9.Clinical observation of preventing and treating constipation by electroacupuncture intervention in ischemic stroke patients at acute stage.
Chengwei WANG ; Mengyue LIU ; Qian WEN ; Ning LI
Chinese Acupuncture & Moxibustion 2015;35(5):430-434
OBJECTIVETo observe the efficacy of preventing constipation by electroacupuncture intervention in ischemic stroke patients at acute stage.
METHODSThree hundred and forty ischemic stroke patients who matched the inclusive criteria were randomly divided into an electroacupuncture (EA) group and a routine treatment group, 170 cases in each one. In the EA group, based on routine western treatment, rehabilitation training and common acupuncture, Tianshu (ST 25) and Zusanli (ST 36) were selected and connected to SDZ-V Hwato brand electric acupuncture apparatus respectively, given stimulation of dense-disperse wave (10 Hz/50 Hz) with electric current of 0.1 to 1.0 mA, once every day and 5 times a week in the first 2 weeks, 2 times a week in the latter 2 weeks. In the routine treatment group, only basic treatment was applied. In the two groups, the course of treatment was 4 weeks and 8 weeks' follow-up was required after treatment. The actual numbers who independently defecated less than 3 times a week after 1 to 4 weeks' treatment and in the 4th and the 8th weeks' follow-up and condition taking laxative medicines during the 12 weeks in the two groups were observed and compared.
RESULTSCompared on the numbers of constipation cases after 1 to 4 weeks' treatment, those in the EA group were all less than those in the routine treatment group [24.7% (42/170) vs. 36.5%(62/170), 18.8% (32/170) vs. 30.6% (52/170), 10.5% (17/162) vs. 27.5% (44/160), 9.3% (15/162) vs. 19.4% (31/160),P<0.05, P<0.001]. In the 4th and the 8th weeks' follow-up, numbers in the EA group were still less than those in the routine treatment group [9.0% (14/156) vs. 18.1% (28/155), 7.7% (12/155) vs. 16.9 (26/154) both P<0.05)]. During the 12 weeks, the number of cases who took laxative medicines in the EA group was less than that in the routine treatment group [21.2% (36/170) vs. 34.7% (59/170), P<0.05].
CONCLUSIONThere is clinical significance to electroacupuncture at Tian-shui (ST 25) and Zusanli (ST 36) coibined with basic comprehensive treatment for preventing and treating constipation symptom in ischemic stroke acute stage.
Acupuncture Points ; Adult ; Aged ; Constipation ; etiology ; physiopathology ; therapy ; Defecation ; Electroacupuncture ; Female ; Humans ; Male ; Middle Aged ; Stroke ; complications
10.Establishment and application of monitoring and evaluation indicator framework for malaria elimination at province and county levels in China
Yingjun QIAN ; Duoquan WANG ; Yao DENG ; Ning XIAO ; Shizhu LI
Chinese Journal of Schistosomiasis Control 2015;(3):255-262
Objective To establish a monitoring and evaluation indicator framework in the context of malaria elimination in pilot areas in China,so as to further assess the malaria elimination work in the future. Methods Based on the consultancy, and according to the government documents such as Action Plan for Malaria Elimination in China (2010-2020),Technical Guidance for Malaria Elimination,Programme Evaluation on Malaria Elimination,the indicators were set up at both provincial and county levels and their application was conducted in Yunnan and Anhui provinces to assess the accountability,accessibility and applicability. Results An indicator framework was built up including four key components,which were input,process, output and impact indicators,in which 95 were provincial indicators and 98 were county indicators. The completion rate of the indicators of Yunnan and Anhui provinces were 94.7%(90/95)and 95.8%(91/95)respectively;and the completion rate of in?dicators of Tengchong and Feidong counties were 93.9%(92/98)and 92.9%(91/98)respectively. Conclusion The estab?lished indicator framework is reliable and applicable,which could effectively help to track the malaria elimination progress and identify gaps.