1.Preparation of Huangqiduotang Granules(Polysaccharide of Radix Astragali seu Hedysari)
Chinese Traditional Patent Medicine 1992;0(02):-
This paper presents a preparation method and quality control standards of Hungqiduotang Granules. Meanwhile, the experiment result of primary studys on its preparation stability shows that the process and prescription is simple and reasonale, and the stability of granules is good.
2.Study on TLC Identification for Tangfuping Capsule
Lin LI ; Xianrong LI ; Yan NI
Chinese Journal of Information on Traditional Chinese Medicine 2006;0(02):-
Objective To establish a TLC method of identification for Tangfuping Capsule. Methods Mulberry leaf, Ginseng, Bee glue in Tangfuping Capsule were identified by TLC. Results Mulberry leaf, Ginseng, Bee glue in Tangfuping Capsule could be identified by TLC. Conclusion The method is simple and sensitive with strong specificity and reproducibility, and can be used for the quality control of Tangfuping Capsule.
3.Determination of Quercetinum in Kuding Cha of Ligustrum by HPLC
Yiwen CHEN ; Xianrong LI ; Yan NI
Chinese Journal of Information on Traditional Chinese Medicine 2006;0(04):-
Objective To set up the determining method of quercetinum in Kuding Cha of Ligustrum by HPLC. Method Hypersil ODS2 chromatographic column (4.6 mm?250 mm, 5 ?m) was adopted. Methanol 0.4% phosphoric acid (47∶53) was used as mobile phase, the flow rate was 1 mL/min, and the detecting wavelength was 360 nm. Result The linear range of quercetinum was 0.050 4~1.008 0 ?g, r =0.999 99, and the average recovery was 101.61% (RSD=1.75%, n =5). Conclusion The method is convenient and accurate, and can used be as basis of quality control for Kuding Cha of Ligustrum.
4.Study on Method of Quality Control for Zhilining Pill
Dehua LI ; Fangjin LU ; Yan NI
Chinese Journal of Information on Traditional Chinese Medicine 2006;0(03):-
Objective To establish the quality standard for Zhilining pill. Methods TLC was employed to identify Radix Sophorae Flavescentis and Radix Aucklandiae while the content of dehydroandrographolide in Zhilining pill was detemined by HPLC. Results TLC findings of Radix Sophorae Flavescentis and Radix Aucklandiae showed the spots of same colors as those developed in the corresponding places of control medical materials. Good liner was observed when the samplesize of dehydroandrographolide was within the range of 0.062~1.550 ?g (r =1.000 0). The average recovery rate was 98.00% with RSD=0.90%. Conclusion The method is simple, accurate, stable, reliable and with good reproducibility, which can be used for the quality control of Zhilining pill.
5.The Effect of Gabapentin on TRPV1 in Rat DRG after CCI
Ni YAN ; Yong LUAN ; Runjiu LI
Journal of China Medical University 2015;(3):234-237
Objective To study the effect of Gabapentin(GBP)on the transient receptor potential vanilloid l(TRPV1)in dorsal root ganglion (DRG)of rats with chronic constriction injury(CCI). Methods SD male rats were used to establish CCI model and randomly divided into 3 groups,the control group,the CCI group,and the CCI+GBP group. Mechanical allodynia and thermal hyperalgesia were measured to evaluate the es?tablishment of CCI model and the analgesic effect of GBP. At the postoperative 8 days,all rats were sacrificed and dorsal root ganglions were collect?ed for further RT?PCR and Western?blotting analysis to detect expression of TRVP1 in DRG. Results The mRNA and protein expression of TRPV1 were both significantly increased in DRG after CCI operation and GBP could decrease mRNA expression of TRPV1 gene in DRG after CCI. Conclusion The expression of TRPV1 was increased in DRG after CCI operation which was decreased after administration of GBP.
6.Optimization of Bacteriocin Produced by Lactobacillus pentosus 31-1
Yan-Ni LV ; Ping-Lan LI ;
Microbiology 1992;0(03):-
To optimize bacteriocin production,researching was done on the respect of incubation condition and the media components. And the optimum incubation time was 24h, the optimum temperature was 30℃, the optimum broth initial pH was 6.5. The optimum media component was: lactose 30g, trypone 15g, soybean peptone 20g, meat extract 30g, peptonethe 20g, Tween 80 1mL, K_(2)HPO_(4 )2g, NaAc 5g, Tri-Ammonium citrate 2g, (MgSO_(4)) 0.58g, MnSO_(4) 0.25g, H_(2)O 1000mL. Production of bactericoin under the optimum broth was 640AU/mL, 8 times than MRS media.
7.Endogenous nitric oxide synthase inhibitor increase skeletal muscle con-tractility and mitochondria biosynthesis in 4-week running rats
Ni QIU ; Weijin FANG ; Cong LI ; Xiaomei LI ; Yan XIONG
Chinese Journal of Pathophysiology 2016;32(7):1259-1265
[ ABSTRACT] AIM:To observe the effect of endogenous nitric oxide synthase ( NOS) inhibitor asymmetric dimeth-ylarginine ( ADMA ) and its signaling pathways on NO levels and skeletal muscle contractility in 4-week running rats. METHODS:The 4 weeks running rat model was established.The twitch tension, tetanic tension and the fatigue test of sole-us muscle induced by electrical stimulation ex vivo were detected.The ATP content, mitochondrial DNA levels and the mR-NA expression of peroxisome proliferator-activated receptor γcoactivator-1α(PGC-1α), nuclear respiratory factor (NRF) were measured to reflect the mitochondrial function and biosynthesis in the skeletal muscle.Serum ADMA concentration was detected by high performance liquid chromatography.The endogenous ADMA enzymes PRMT1 and 2 subtypes of ADMA me-tabolism enzyme DDAH, 3 subtypes of NOS protein expression in the skeletal muscle were determined by Western blot.NOS activity and nitric oxide ( NO) content were analyzed by colorimetric method.RESULTS: Compared with normal control group, the twitch tension, tetanic tension and the anti-fatigue capability of soleus muscle in running group were significantly enhanced, ATP content, mitochondrial DNA content and the mRNA expression of PGC-1αand NRF were significantly in-creased (P<0.01).In addition, the protein expression of constitute type NOS (cNOS) and NOS activity were significantly increased (P<0.01), but the increase in NO content was relatively smaller in soleus muscle in exercise group (P<0.05). Moreover, serum ADMA concentration in running group was increased, while the DDAH2 expression in skeletal muscle was decreased.CONCLUSION:Short-term endurance exercise enhances the twitch tension, tetanic tension and fatigue resist-
ance of soleus muscle.The mechanism may be that increased cNOS expression feedbacks to increase ADMA concentration, thus maintaining the increase in NO synthesis at a relatively low level, and resulting in promoting skeletal muscle mitochon-dria biosynthesis and mitochondrial function.
8.The in vitro anti-atherosclerotic activity of compound E0869.
Xiao WANG ; Chang LIU ; Peng LIU ; Ni LI ; Yan-Ni XU ; Shu-Yi SI
Acta Pharmaceutica Sinica 2015;50(4):440-446
ATP-binding cassette transporter A1 (ABCA1) and scavenger receptor class B type I (SR-BI/CLA-1) are the key proteins in reverse cholesterol transport (RCT). The high expression of ABCA1 and SR-BI/CLA-1 can decrease the danger of atherosclerosis. The purpose of the study is to find ABCA1 and CLA-1up-regulators for treating atherosclerosis by using cell-based high throughput screening models. Among 20 000 compounds screened, E0869 [1-(3, 4-dimethylphenyl)-1-oxopropan-2-yll4-((methylsulfonyl)methyl)benzoate] was found as the positive hit. The up-regulated activities of E0869 in ABCAl1-LUC and bCA-l1-LUC HepG2 cell were 160% and 175%, respectively. The EC50 values of E0869 in ABCAl1-LUC and CLA-l1-LUC HepG2 cell were 3.79 and 1.42 pμol- x ,(-1) respectively. E0869 could upregulate the mRNA and protein levels of ABCA1, SR-BI/CLA-1 and ABCGJ1genes in HepG2 and RAW264.7 cells by Real-Time Quantitative PCR and Western blotting analysis, but could not influence the expression of FAS, SREBP-l1 and CD36. Foam cell assay showed that E0869 could inhibit lipids accumulation in mouse peritoneal macrophages RAW264.7. Cholesterol efflux assay showed that E0869 could induce HDL-mediated cholesterol efflux in mouse peritoneal macrophages RAW264.7. In conclusion, E0869 could up-regulate ABCA1 and CLA-1 activity, and had good anti-atherosclerotic activity in vitro.
ATP Binding Cassette Transporter 1
;
metabolism
;
Animals
;
Atherosclerosis
;
drug therapy
;
Biological Transport
;
Cholesterol
;
Hep G2 Cells
;
High-Throughput Screening Assays
;
Humans
;
Macrophages, Peritoneal
;
drug effects
;
Mice
;
RNA, Messenger
;
Scavenger Receptors, Class B
;
metabolism
;
Up-Regulation
9.Pathogenesis, clinical diagnosis and treatment of anorectal malignant melanoma: a review
ZHANG Yan ; NI Jing ; JIA Wengping ; XU Li
Journal of Preventive Medicine 2023;35(12):1053-1057
Abstract
Anorectal malignant melanoma (ARMM) is a subtype of malignant melanoma with low incidence and high invasion, and has a poor prognosis due to its hidden location and rapid progression. In terms of pathogenesis, the molecular landscape and potential carcinogenic driver gene characteristics of ARMM are significantly different from those of cutaneous melanoma, manifested by a lower rate of somatic mutations, no ultraviolet exposure-related mutation characteristics, a high incidence of cell structural variation, and high genomic instability. The tumor-driving genomic mutations are mainly KIT, NRAS, and NF1 mutations, and the incidence of SF3B1 mutations is significantly higher than that in other sites of mucosal melanoma. Surgery is still the main treatment for ARMM, while immunotherapy and targeted therapy need further development. This article reviews the characteristics of carcinogenic driver gene mutations and clinical diagnosis and treatment of ARMM, providing a reference for the prevention and treatment of ARMM.
10.Effect of Xileisan temperature-sensitive gels on endothelial nitric oxide synthase, vascular endothelial growth factor A and tumor necrosis factor-α expression in rats with bleeding internal hemorrhoids
Wengping JIA ; Yan ZHANG ; Jing NI ; Li XU
Journal of Preventive Medicine 2023;35(1):27-31
Objective:
To investigate the effect of Xileisan temperature-sensitive gels on endothelial nitric oxide synthase (eNOS), vascular endothelial growth factor A (VEGF-A) and tumor necrosis factor-α (TNF-α) expression in rats with bleeding internal hemorrhoids, so as to provide insights into the illustration of the pathogenesis of internal hemorrhoid hemorrhage.
Methods:
Thirty six-week-old SPF-graded rats of the SD strain were randomly divided into the normal group, model group and Xileisan temperature-sensitive gel group, of 10 rats in each group (half male and half female). Cotton balls were soaked with 0.16 mL of croton oil mixture and then inserted into the anus of rats in the model group and Xileisan temperature-sensitive gel group for 10 s. After 6 h when the rectal mucosa tissues presented remarkable swelling, the perianal mucosa was rubbed repeatedly with a rough glass rod until the glass rod was bloody. Following successful modeling, rats in the Xileisan temperature-sensitive gel group was given rectal administration of Xileisan temperature-sensitive gel at a dose of 0.5 mL/d, while animals in the normal group and model group were given rectal administration of the blank gel at the same dose. Following administration for 7 successive days, rats were sacrificed, and the hemorrhoids tissues were collected for pathological examinations. The eNOS, VEGF-A and TNF-α expression was determined using immunohistochemistry and compared among groups.
Results:
Compared with the normal group, the rat hemorrhoids mucosa showed inflammatory changes in the model group, with submucosal congestion and edema, blood vessel congestion and dilation, and visible new blood vessels, and remarkable improvements were seen in the hemorrhoid mucosal inflammation in the Xileisan temperature-sensitive gel group. There were significant differences in the integrated option density (IOD) of eNOS and VEGF-A expression in rat hemorrhoids tissues among the three groups (P<0.05), and no gender-specific differences were seen (P>0.05). The IOD values of eNOS (45.84±13.66) and VEGF-A expression (45.89±9.06) were higher in rat hemorrhoids tissues in the model group than in the normal group (23.11±5.64 and 27.91±11.65) and the Xileisan temperature-sensitive gel group (27.41±8.89 and 33.44±6.20) (P<0.05), while no significant differences were detected in the IOD of TNF-α expression in rat hemorrhoids tissues among the three groups (P>0.05).
Conclusion
Xileisan temperature-sensitive gel may alleviate inflammation and internal hemorrhoids hemorrhage through inhibiting eNOS and VEGF-A expression in rat hemorrhoids tissues.