1.Curative Effect Observation of Ginkgo Biloba Extract on Back Chapped Skin Model in Rats
Ge SHAO ; Ying CHEN ; Mingjie PAN
China Pharmacist 2016;19(4):656-659
Objective:To determine the curative effect of Ginkgo Biloba extract on the back chapped skin in SD rats. Methods:Totally 60 SD rats were randomly divided into 6 groups with 10 rats in each. One group was the blank control group, while the other five groups with the same back chapped skin were respectively treated with different therapy regimen, namely one group was the model group without any treatment, one group was urea group treated with the commercially available urea, and the last three groups were re-spectively treated with Ginkgo Biloba extract at the dose of 5%, 1% and 0. 2%. The pathological tissue was observed after HE stai-ning, and the content of hydroxyproline ( Hyp) in skin was determined by alkaline hydrolysis. Results:The skin lesion and the score of pathological section were studied and the content of Hyp in the damaged skin was determined. The comprehensive score for the groups was 0, 13. 2, 7. 4, 11. 0, 5. 8 and 6. 6, respectively, and the content of Hyp was (4. 57 ± 0. 07), (2. 41 ± 0. 27), (3. 29 ± 0.57), (2.55 ±0.31), (3.24 ±0.26) and (3.37 ±0.24) μg·mg-1,respectively. There was significant difference in the curative effect between the Ginkgo Biloba extract groups at high dose (5%) and medium dose (1%) and the model group (P<0. 05), which showed no obvious difference when compared with the urea group (P>0. 05). Conclusion:The extract of Ginkgo Biloba has a certain effect on the back chapped skin in SD rats, which may contribute to the external preparations of Ginkgo Biloba extract.
2.The relationship among big five-personality, resilience and general health of new recruits
Xiaoxia CHEN ; Mingjie ZHOU ; Jianxin ZHANG
Chinese Journal of Behavioral Medicine and Brain Science 2011;20(6):547-548
Objective To discuss the relationship among Big Five-Personality, Resilience and General Health of the new recruits in a certain troop. Methods 205 new recruits completed the questionnaires, which include NEO Five-Factor Inventory ( NEO-FFI) , Connor-Davidso Resilience Meter (Chinese version) , and General Health Questionnaire (GHQ-12). Results The neuroticism trait of personality positively correlated to General Health( r = 0.50, P<0.001) and significantly predicted mental disease (β =0.4, P<0.01). The self-strengthening dimension of resilience was negatively related to general health ( r = - 0. 51 , P<0. 01 ). Furthermore, self-strengthening played partial mediating role between neuroticism and general health ( Sobel Z =2. 92, P<0. 01). Conclusion The neuroticism trait of personality is a risk factor for new recruits'mental health, while self-strengthening is a protective factor for it.
3.Effects of cholesterol overload on visfatin secretion from adipocytes and the mechanism
Mingjie CHEN ; Zhihong WU ; Yaqing CHEN ; Hairong GONG ; Xiangping LI
Chinese Journal of Endocrinology and Metabolism 2012;28(2):153-156
3T3-L1 adipocytes were cultured and differentiated into mature adipocytes in vitro. The adipocytes were intervened by ACAT inhibitor( 2 μg/ml) and ox-LDL with various concentrations (0,25,50,75,and 100 μg/ml)for 48 h,ACAT inhibitor( 2 μg/ml) and ox-LDL( 50 μg/ml) at the 0,6,18,36,and 48 h,or ACAT inhibitor( 2 μg/ml),ox-LDL( 50 μg/ml),and TUDCA with various concentrations(0,100,200,and 400 μ mol/L)for 48 h,respectively.The levels of visfatin in supernatant were examined by ELISA and the expressions of protein GRP78 and CHOP in adipocytes were detected by Western blot.After the adipocytes were treated with ACAT inhibitor and ox-LDL at different concentrations for 48 h,the cholesterol concentration and the expressions of GRP78 and CHOP protein in adipocytes and the visfatin levels in the supernatant fluid were increased with the increase of the ox-LDL concentration.The differences had statistical significance in the experimental groups compared with blank control group( all P<0.05 ).After the intervention with ACAT inhibitor and ox-LDL for different durations,the expressions of GRP78 and CHOP protein in adipocytes and the visfatin levels in the supernatant fluid were up-regulated in a timedependent manner.The differences between experimental groups and blank control had statistical significance( all P<0.05 ).After the intervention with ACAT inhibitor,ox-LDL,and different concentrations of TUDCA for 48 hours,the expressions of GRP78 and CHOP protein in adipocytes and visfatin levels in the supernatant fluid were down-regulated in a dose-dependent manner and as compared with blank control group the difference were statistically significant( all P< 0.05 ).The increase of cholesterol load in adipocyte may promote the visfatin secretion,denoting that the mechanism might be due to the enhancement of endoplasmic reticulum stress in aidpocytes.
4.Cloning and sequence analysis of V_H and V_L gene of anti-CD3 McAb
Nan ZHANG ; Mingjie CHEN ; Jing CHEN ; Al ET
Chinese Journal of Immunology 2000;0(09):-
Objective:To amplify and sequence of the variable region genes of anti CD3 McAb.Methods:The V H?V L genes were amplified by RT PCR from total RNA that were extracted from WuT3 hybridoma.Recombinant cloning vector was constructed and sequenced after the enzyme digestion.Results:It showed that V H gene consisted of 363 bp encoding amine acid residues,belongs to mouse heavy chain subgroup IIB;V L gene consisted of 330 bp encoding amine acid residues,belongs to mouse ? light chain subgroup III.Comparing with Kabat database,the V H?V L genes were in agreement with the characterization of DNA sequences present in the mouse Ig V H?V L regions respectively.Conclusion:The success of cloning of the V H?V L genes of WuT3 McAb lay a good foundation for the construction and expression of chimeric antibody.
5.Moderation effects of justice sensitivity between personality and public mood in volunteers
Zhe YU ; Hao WANG ; Chen CHEN ; Yixin ZHOU ; Mingjie ZHOU
Chinese Journal of Behavioral Medicine and Brain Science 2017;26(1):55-59
Objective To explore the relationship between big-five personality,and public mood of volunteers,and to find out the moderator effect of justice sensitivity.Methods A total of 1 022 volunteers were investigated.The Big-Five Inventory (BFI),Public Mood Scale (PMS),Justice Sensitivity Inventory (JSI) were applied to all subjects.Results The average score was (19.77±4.49) for extraversion,(26.69± 4.13) for agreeableness,(23.33±5.37) for conscientiousness,(12.49±4.91) for neuroticism,(24.95±5.44)for openness,(8.78±3.23) for positive public mood,(3.46±3.06) for negative public mood and correlated with (26.85± 10.55) for observer sensitivity.The extraversion,agreeableness,conscientiousness and openness were correlated with positive public mood(β=0.31,P<0.01;β=0.25,P<0.01;β=0.29,P<0.01;β=0.26,P<0.0 1),and negatively correlated with public mood (β=-0.14,P<0.01;β=-0.29,P<0.01;β=-0.20,P<0.01;β=-0.08,P<0.01).Neuroticism was negatively correlated with positive public mood (β=-0.27,P<0.01),and positively correlated with negative public mood (β=0.31,P<0.01).The interaction effect of agreeableness and observer sensitivity negatively correlated with positive public mood,negative public mood (β=-0.09,P<0.01;β=-0.07,P<0.05).The interaction effect of neuroticism and observer sensitivity was positively correlated with positive public mood (β=0.08,P<0.01).Conclusion Observer sensitivity plays a regulative role between big-five personality and mental health,and can slow the negative impact of low agreeableness to positive public mood,strengthen the impact of low agreeableness to negative public mood,and slow the negative impact of high neuroticism to positive public mood.
6.Microanatomical study of the area in which the facial nerve being easy to damage in mastoid surgery
Yuefeng HAN ; Mingjie ZHANG ; Deshang CHEN ; Hui LI ; Lanzhu ZHOU
Chinese Journal of Microsurgery 2011;34(3):211-214
Objective To study the microanatomy of the area in which the facial nerve being easy to damage in mastoid surgery, in order to provide microanatomical datas for the clinical works. Methods In 20 adult wet skull specimens (40 temporal bones), the segments of facial nerve and their adjacent structures in the area in which the facial nerve being easy to damage were observed according to operation of mastoid surgery. Results The length of the horizontal segment was (8.85 ± 1.01) mm (7.10-11.25 nun), the diameter was (1.88 ± 0.65) mm (1.55-1.90 mm); The angle opening towards anterior direction between horizontal segment and vertical segment was (115.50 ± 6.89°) (109.5°-128.6°); The vertical distance from the cochlearform process to this segment was (1.89 ± 0.58) mm (0.90-3.05 mm); The vertical distance from the midpoint of the base of stapes to this segment was (1.92 ± 0.52) mm (1.44-2.56 mm); The vertical distance from the head of the stapes to this segment was (2.30 ± 0.85) mm (1.97-3.11 mm); The angle towards posterior direction between horizontal segment of facial nerve and tympanic tegmen was (28.5°± 3.66°) (25.8°-31.5°); The diameter of the pyramidal segment of facial nerve was (1.89 ± 0.65) mm (1.56-1.88 mm); The distance between the su mmit of pyramidal segment of facial nerve and the apex of shor limb of incus was (2.55 ± 0.21) mm (2.10-2.90 mm); The distance from the su mmit to the eminence of the lateral semicircular canal was (2.86 ± 0.31) mm (2.23-3.56 mm); The diameter of the proximal part of vertical segment of facial nerve was (2.13 ± 0.13) mm (1.90-2.40 mm); The angle towards superior direction between verical segment of facial nerve and chorda tympani nerve was (38.60 ± 1.99°) (28.5°-52.5°); The vertical distance from the top of the pyramidal eminence to the vertical segment of the facial nerve was (2.05 ± 0.65) mm (1.85-2.36 mm). Conclusions The eminence of the lateral semicircular canal, short limb of incus, cochlearform process, tympanic tegmen, stapes, pyramidal eminence, chorda tympani nerve in the area are important landmarks to be located in mastoid surgery. The anatomic relations in this area are complicated and compact. Anatomical knowledge is very important to the surgery of this area.
7.Distribution and drug resistance of pathogens isolated from urine culture in 2013 from a 3A hospital
Qiang XIE ; Mingjie CAO ; Ling CHEN ; Chengyu LEI ; Tiantian XU
International Journal of Laboratory Medicine 2015;(14):2047-2048
Objective To investigate the distribution and drug resistance of pathogens isolated from urine culture in 2013 and provide basis for clinical treatment .Methods MicroScan WalkAway 96 PLUS bacterial identification system was used to identify the pathogens and drug susceptibility testing .The data were analyzed by WHONET 5 .6 software .Results A total of 231 strains of pathogens were isolated from urine cultures ,including 51(22 .1% ) strains of gram‐positive bacteria ,170(73 .6% ) strains of gram‐negative bacteria ,and 10(4 .3% ) strains of fungi;Escherichia coli ,the coagulase‐negative Staphylococcus ,Klebsiella pneumoniae and E .faecalis were ranked the top four species of pathogens ,accounting for 48 .9% ,13 .0% ,9 .5% ,5 .2% ,respectively .MRCNS among CNS were 73 .6% .Staphylococcus had 100 .00% sensitivity to vancomycin and linezolid ;the antimicrobial resistance rate of E .fae‐calis to ampicillin was 8 .3% .E .faecalis had 100 .00% sensitivity to vancomycin and linezolid .the detectable rates of Escherichia co‐li ,Klebsiella pneumoniae of ESBLs were 52 .2% and 50 .0% ,and the strains had 100 .00% sensitivity to imipenem and meropenem . Conclusion Escherichia coli is a major pathogen in urine culture ,Bacterial resistance is serious .
8.Advances in competing endogenous RNA modulation of cancer progression
Pingping XU ; Mingjie JIANG ; Xueying CHEN ; Di FU
Cancer Research and Clinic 2015;27(8):568-571
Protein-coding transcriptome,pseudogenes,long non-coding RNAs and circular RNAs can act as competing endogenous RNA (ceRNA).ceRNA can crosstalk with each other through microRNA recognition elements (MRE),thus regulating the post-transcriptional gene expression.More and more evidences showed that ceRNA could form an extensive network of post-transcription regulation,keep the cell homeostasis and involve in the disease development and progression like tumorigenesis and cancer progression.Depending on up-regulation or down-regulation of different kinds of microRNA in different cells,ceRNA acts as either an oncogene or a tumor suppressor.ceRNA may have a great potential in cancer diagnosis and treatment.
9.Effect of total glucosides of paeony on the expression of interleukin-18 in human HaCaT keratinocytes and its related signaling pathways
Hongying ZHANG ; Xiaoyan WANG ; Xingyu CHEN ; Mingjie PANG ; Tongxin SHI
Chinese Journal of Dermatology 2014;47(10):723-727
Objective To evaluate the effect of total glucosides of paeony (TGP) on the expression of interleukin-18 (IL-18) in human HaCaT keratinocytes,and to explore the roles of extracelluar signal-regulated protein kinase1/2 (ERK1/2) and c-Jun N-terminal kinase 1/2 (JNK1/2) signaling pathways in the effect.Methods Some cultured human HaCaT keratinocytes were classified into three groups:control group treated with dimethyl sulfoxide (0.031%),TGP groups treated with 6 different concentrations (0.5,2.5,12.5,62.5,125.0 and 312.5 mg/L) of TGP respectively,inhibitor groups treated with TGP of 125 mg/L after 2-hour pretreatment with PD98059 (an ERK1/2 inhibitor) and SP600125 (a JNK1/2 inhibitor) of 10 μmol/L respectively.After additional culture for 48 hours,reverse transcription (RT)-PCR was performed to measure the mRNA expression level of IL-18,and enzymelinked immunosorbent assay (ELISA) to determine the level of IL-18 protein in the culture supematant of HaCaT cells.Some HaCaT keratinocytes were classified into two groups to be treated with TGP of 125 mg/L for 15,30 and 60 minutes with or without the pretreatment with PD98059 and SP600125 of 10 μmol/L; then,Western blot was carried out to determine the phosphorylation levels of ERK1/2 and JNK1/2 in HaCaT cells.Results The levels of IL-18 mRNA and protein in culture supernatant were significantly increased by TGP of 0.5 and 2.5 mg/L,but decreased by TGP of 62.5 and 125.0 mg/L,and TGP of 125.0 mg/L showed the strongest inhibitory effect.After treatment with TGP of 125.0 mg/L,the level of phosphorylated ERK1/2 in HaCaT cells peaked at 15 minutes (0.448 ± 0.018),decreased to 0.213 ± 0.005 at 30 minutes and 0.217 ± 0.005 at 60 minutes,with significant differences between TGP-treated and untreated cells at 15 minutes (0.448 ± 0.018 vs.0.204 ± 0.005,P< 0.05) but not at 30 or 60 minutes (both P > 0.05).The phosphorylation level of ERK1/2 was 0.237 ± 0.010 in HaCaT cells pretreated with PD98059 prior to the treatment with TGP,significantly different from that in HaCaT cells treated with TGP only (P <0.01).TGP of 125.0 mg/L had no obvious effect on JNK phosphorylation,and there was no significant difference in the level of phosphorylated JNK1/2 between HaCaT cells untreated and those treated with TGP of 125.0 mg/L for different durations (all P > 0.05).Conclusions TGP can inhibit the expression of IL-18 mRNA and protein in HaCaT cells,likely through the ERK1/2 signaling pathway.
10.Overview on the New Dosage Forms of Sirolimus
Mingjie PAN ; Rong DU ; Ying CHEN ; Ge SHAO
China Pharmacist 2016;19(6):1183-1186
In the middle of 1990 s, it was discovered that sirolimus had inhibitory effect on the proliferation of T lymphocytes , therefore, it is used for the treatment of anti-tumor cells.At present, the dosage forms of sirolimus are capsules , oral liquid and tab-lets.However, because of good fat-soluble and poor water-soluble property, its bioavailability is low with many side reactions .In order to provide reference for the further studies of sirolimus , the literatures in recent years were searched in Pubmed , Springer, CJFD,VIP Chinese periodical database and Wanfang data , and the research progress in the new dosage forms of sirolimus was summarized .