1.Progress on the etiology of the Hirschsprung's disease
International Journal of Pediatrics 2011;38(3):301-303
The major progress on the study of etiology of the Hirschsprung's disease is the genetic factots and the aherations of microenvironment in primarily embryogenic period.The genetic factors comprise of RETGDNF system.EDNRB.EDN3 system,and many other genes involving in the formulation of the tormer two svstems.such as SOX10,NRG-1, FoxD3,PHOX2B,HOXB5,ZFHXIB,all of which file essencial for the migration and differentiation of neural crest cells(NCC).The alterations of microenvironment in primarily embryogenic period include interstitial ceLls of cajal(ICC),cell adhesion molecules(CAMLl),Ca2+ and so on.Definitely,CAML1 plays as the basis of NCC's migration and differentiation,and the decline of the Ca2+dependent channel's expression brings about the anolnaloug contraction of smooth muscle.
2.Pioglitazone reverses TNF-α-induced insulin resistance in 3T3-L1 adipocytes
Tianshu ZENG ; Lulu CHEN ; Li YUAN
Chinese Journal of Diabetes 2005;13(6):423-425
Objective To investigate whether the effect of pioglitazone on TNF-α-induced insulin resistance is associated with altering IRS-1-induced signaling. Methods 3T3-L1 adipocytes were treated with TNF-α for 24 hours with or without being pretreated with 10μM piglitazone for 6 hours or with pioglitazone alone.Insulin-stimulated glucose uptake of 3T3 adipocytes was measured by using 2-deoxy 3H glucose.The Western blot was used to measure IRS-1, PKB, PKC-λ protein and tyrosine phosphorylation on IRS-1, PKB and PKC-λ phosphorylation. Results Both TNF-α and pioglitazone increased glucose uptake of 3T3 adipocytes under basal status.On TNF-α treated cells, insulin-stimulated glucose uptake was decreased by about 50%, accompanied with the reductions of IRS-1 protein level, tyrosine-phosphorylation of IRS-1 and PKB phosphorylation.TNF-α treatment had no effect on PKC-λ phosphorylation. Pioglitazone pretreatment was able to antagonize TNF-α-induced insulin resistance in 3T3 adipocytes partly reverse IRS-1 protein, increase insulin-stimulated tyrosine phosphorylation of IRS-1,and increase phosphorylations of PKB and PKCλ. Conclusion TNF-α-induced insulin resistance in 3T3-L1 adipocytes is related to impaired tyrosine phosphorylation of IRS-1. Pioglitazone antagonizes the above TNF-α induced insulin resistance.
3.Effects of Tamoxifen on proliferation and expression of serine proteinase inhibitor 9 in human gastric cancer cells
Haixia CHEN ; Lulu WANG ; Hua LI
Chongqing Medicine 2016;45(7):873-875,879
Objective To observe the expression of estrogen receptors (ERαand ERβ) on gastric cancer cells and evaluate the effect of Tamoxifen(TAM) on the cell proliferation and expression of serine proteinase inhibitor 9(PI9) of gastric cancer cells . Methods PI9 positive expression(MNK45 ,SGC7901)and negative expression (BGC823)of gastric cancer cell lines were from pre‐liminary screened ,the expression of ERα and ERβ detected by immunofluorescence chemical method ,the cell proliferation and ex‐pression of PI9 were tested by CCK8 assay and reverse transcription‐PCR after intervention of TAM .Results ERαprotein expres‐sion was noted in MNK45 and SGC7901 ,ERβwas noted in BGC823 ,but the expression of ERαand ERβwere not appear to be obvi‐ous after the intervention of TAM .Tamoxifen could obviously inhibited cell proliferation of MNK45 and SGC7901 at concentration of 0 .1-100 .0 μmol/L ,the differences were statistically significant compared with negative control group (P<0 .05) ,but showed no dose‐dependent to the proliferation of BGC823 and MNK28 .After treating with TAM ,the expression of PI9 mRNA of SGC7901 (0 .402± 0 .020) and MNK45(0 .359 ± 0 .048) were obviously lower than that in the negatwe control group(P< 0 .05). Conclusion Tamoxifen could significantly inhibit the proliferation of PI9 positive expression than PI9 negative expression of gastric cancer cell lines ,and showed obviously dose‐dependent ,its role in inhibiting proliferation might closely related to immune tolerance improved by PI9 .
4.Practice and Experience of Medication Consultation Wechat Platform in Our Hospital
China Pharmacy 2016;27(7):926-928,929
OBJECTIVE:To provide reference for medication consultation Wechat platform in the hospital. METHODS:The medication consultation Wechat platform of our hospital was introduced,including main method,content and effect. The consulting pharmacist team was set up,and Wechat public number was applied and operated experimentally;information pharmacist was re-sponsible for its daily maintenance. We released pharmacy news,accumulated consumers and expanded influence through other me-dia at regular intervals. RESULTS & CONCLUSIONS:According to the medical practice,two modules“medication consultation”and“pharmacy news”were set up. From Dec. 2014 to Jul. 30th 2015,medication consultation system had accumulated 1 121 con-sumers,with an increase of 5 to 8 ones everyday;average number of consultation records was 10 everyday;we also had published 22 batch of medication news(79 messages),including 31 original messages and 3 video messages. Several messages gained much attention from network media and offline media. As new pharmaceutical care mode,Wechat platform contribute to realize a individ-ual,convenient and mobile medication consultation service,medication health science popularization,and improves medication compliance of patients and the awareness of medication safety in field of pharmaceutical administration Wechat platform,so as to improve pharmaceutical care effect of“taking patients as the center”and promote the propaganda of hospital brand. Thus it has a good prospect of application and popularization.
5.Effects of advanced glycation end-products on differentiation of vascular endothelial cells from bone marrow stem cells of mice
Shufang XU ; Yuming LI ; Lulu CHEN
Chinese Journal of Endocrinology and Metabolism 2008;24(5):548-549
The effects of advanced glycation end-products (AGEs) on number and activity of vascular endothelial cells (VEC) from hone marrow stem cells (BMSC) of mice were investigated. 100 μ/ml AGEs markedly inhibited differentiation of BMSC into VEC with decreased vascular endothelial growth factor receptor-2 positive cells, hut 20 μg/ml AGEs had no effect.
6.Discussion on etiology and pathogenesis to drug-induced immune hemolytic anemia
Lulu LI ; Zhengqing LIU ; Guang RONG
International Journal of Traditional Chinese Medicine 2010;32(5):448-449
Drug-induced immune hemolytic anemia has complicated manifestations and pathogenesis, and therefore clinicians should know its etiology and pathogenesis for safe medication. In this paper, we made a discuss on the etiology and pathogenesis of drug-induced immune hemolytic anemia from both traditional Chinese and western medicine viewpoint hoping to provide references for clinical physicians.
7.Effect of calories restriction on ER stress in the liver of high fat diet rats
Lulu CHEN ; Ningxu LI ; Xiangqun DENG
Chinese Journal of Pathophysiology 1986;0(03):-
AIM: To study the effect of calories restriction on endoplasmic reticulum(ER) chaperone protein 78-kD glucose regulated protein(GRP78) mRNA expression in the liver of high fat diet rats,in order to explore the mechanism of how calories restriction improves insulin resistance.METHODS: Wistar rats(n=24) were randomly divided into 3 groups: normal chow(NC) group,was fed free normal chow(18.94% of calories as fat) for 12 weeks;high fat group(HF) was fed high fat diet(50.55% of calories as fat) for 12 weeks;calories restriction group(CR) was fed high fat diet for 8 weeks at first,then given 50% of diet consumed by the same age NC group.Changes of body weight,height,and food intake were recorded.At the end of experiment,HOMAIR,the rate of visceral fat(including perirenal fat and epididymal fat) vs weight,plasma protein,blood lipid(including total cholesterol and triglyceride),hepatic GRP78 mRNA and hepatic histological changes(including light microscopic studies and electron microscopic studies) were detected.RESULTS:(1) Animals in HF group had an obviously elevation of fasting insulin(27.51?3.51) mU/L vs(15.46?2.25) mU/L,triglyceride(1.35?0.25) mmol/L vs(0.67?0.10) mmol/L,total cholesterol(2.59?0.34) mmol/L vs(1.41?0.28) mmol/L and insulin resistance index HOMAIR(5.85?0.23 vs 2.85?0.60) compared with NC group,and also had obviously lipid accumulations in the liver.(2) After calories restriction,all the abnormal elevated biochemical indicators were decreased to normal levels,the hepatic lipid accumulations were also improved.(3) The changes of liver ultrastructure in HF group showed rough endoplasmic reticulum enlargement,fragmentation,taking off grain,and with glycogen solution.The changes in CR group were nearly the same as those in NC group.(4) High fat diet induced the expression of GRP78 mRNA, calories restriction might reverse it.CONCLUSION: Reasonable food calories restriction is a good method to improve insulin resistance,partly due to improvement of endoplasmic reticulum stress in liver.
8.The relationship between heart rate variability and microalbuminuria in patients with diabetes
Li YUAN ; Lulu CHEN ; Jianping WU
Chinese Journal of Diabetes 2000;8(4):201-203
ObjectiveTo evaluate the relationship between microalbuminuria(MAU) and cardiac autonomic neuropathy in diabetes.MethodsThe urinary albumin excretion (UAE) was measured,and the cardiac autonomic function was detected using 24 hour ambulatory ECG spectral analysis of heart rate variability (HRV) in 46 patients with diabetes and 31 normal control subjects.ResultsParameters of time and frequencydomain of HRV were reduced in patients with diabetes.The high frequency at night reflecting the cardiac vagus nerve function was significantly lower in diabetic patients than control group.In diabetic patients with MAU,the detected values of HRV were significantly decreased,combined vagosympathetic impairment occurred,and 24 hour rhythm from day to night in autonomic nervous activity disappeared.ConclusionMAU in diabetes is related with HRV.
9.Relationship between anemia before radiotherapy and prognosis of patients with esophageal carcinoma
Lulu LI ; Jian CHEN ; Dingru ZHANG
Cancer Research and Clinic 2015;(9):624-626
Objective To analysis the prognosis of esophageal carcinoma patients with anemia before radiotherapy. Methods 137 patients with esophageal carcinoma treated with three-dimensional conformal radiation therapy (3D-CRT) in the Second Peopleˊs Hospital of Jiaozuo over the past five years were retrospectively analyzed. There were 40 patients with anemia and 97 cases without anemia before radiotherapy. The prognosis of patients with anemia and the relationship with other clinical factors were evaluated by survival analysis. Results The 3-year and 5-year overall survival (OS) rates in non-anemic group were 43.6 % and 35.7 %, respectively, and 21.0 % and 16.4 % in anemic group. The 3-year and 5-year disease-free survival (DFS) rates in non-anemic group were 38.5 % and 25.3 %, respectively, and 13.1 % and 9.2 %in anemic group. The Kaplan-Meier method showed that both 3-year and 5-year OS and DFS rates in non-anemic group were significantly higher than those in anemic group (P< 0.05). Conclusion Anemia is the independent prognostic factor for patients with esophageal carcinoma in many clinical factors.
10.Role of AT1R-associated microRNAs in thyrotoxic heart desease
Huimin LI ; Yunfei LIAO ; Lulu CHEN
Chinese Journal of Endocrinology and Metabolism 2014;30(9):797-799
MicroRNAs (miRNAs) are small endogenous non-coding RNA molecules.They regulate negatively the expression of target genes at post-transcriptional stages by means of affecting the stability of target mRNA or interfering with the transcriptional process.Recently,there is evidence demonstrating that miRNAs play important roles in the gene expressions of thyrotoxic heart diseases.Elevated levels of thyroid hormones profoundly influence the cardiovascular system through the renin-angiotensin system (RAS).As a principal active component of RAS,angiotensin Ⅱ receptor 1 (AT1 R) interacts with miRNAs in promoting or extenuating the progress of thyrotoxic heart disease.In this article,the roles of AT1R-associated miRNAs,miR-21,miR-155,miR-208a/b,and miR-499 in thyrotoxic heart disease were reviewed.