1.Pathology of mammary mucinous carcinoma and its molecular markers.
Wei ZHANG ; Yun NIU ; Tong-xian ZHANG ; Shan LIU ; Fen LIU
Chinese Journal of Pathology 2013;42(11):777-779
Adenocarcinoma, Mucinous
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classification
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metabolism
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pathology
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Biomarkers, Tumor
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metabolism
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Breast Neoplasms
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classification
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metabolism
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pathology
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Carcinoma, Ductal, Breast
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pathology
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Carcinoma, Intraductal, Noninfiltrating
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pathology
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Female
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Humans
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Lymphatic Metastasis
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Mucin-1
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metabolism
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Mucin-2
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metabolism
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Mucins
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metabolism
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WT1 Proteins
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metabolism
2.Study on Mutation in Exon 8 of ATP7B Gene in Chinese Patients with Wilson Disease
xian-ting, JIAO ; xiao-qing, LIU ; ya-fen, ZHANG ; jie, WU ; lian-wen, WANG
Journal of Applied Clinical Pediatrics 2004;0(08):-
G,the noval insertion mutation of c.2298_2299insC is identified in Chinese patients.
3.Effect of Jiawei Foshou San and its compatibility on hepatic P450 enzyme activity and hepatocyte morphology in rats.
Fang-hong SHANG ; Shan FENG ; Fei-yan ZHANG ; Qian CHEN ; Xian-jin CHEN ; Ji-fen ZHANG ; Xiao-yu XU
China Journal of Chinese Materia Medica 2015;40(10):2030-2036
To investigate the effect of Jiawei Foshou San and its various combined administration on hepatic P450 enzyme activity and hepatocyte morphology in rats. Rats were orally administered with drugs for four weeks and then sacrificed to prepare liver microsomes. The liver microsomes were incubated with the cocktail method; The metabolites were determined with the rapid liquid chromatography with tandem mass spectrometry (LC-MS/MS) to investigate the hepatocyte P450 enzyme activity. In addition, the hepatic pathological changes were observed by using the hematoxylin and eosin (HE) staining. Compared with the control group, the enzyme activity of CYP1A2 and CYP3A4 in the Jiawei Foshou san group showed a significant rise (P < 0.05); the enzyme activity of CYP1A2, CYP2C9, CYP2D6, CYP2E1 and CYP3A4 in the ferulic acid + ligustrazine group and the ligustrazine + tetrahydropalmatine group showed a significant rise (P < 0.05) ; the enzyme activity of CYP1A2, CYP2D6 and CYP2E1 in the ligustrazine group showed a significant rise (P < 0.05); the enzyme activity of CYP3A4 in the ferulic acid group showed a significant reduction (P < 0.05). After the administration with various drugs, the hepatocyte morphologies in the ferulic acid group and the ligustrazine group were normal. The pathological changes were observed in the tetrahydropalmatine group, such as unclear boundary of hepatic lobules, disordered hepatic cell arrangement, blurred edge, anisokaryosis and infiltration of inflammatory cells. The ferulic acid + tetrahydropalmatine group, the ligustrazine + tetrahydropalmatine group and the Jiawei Foshou San group also showed inflammatory infiltration, but with less pathological changes, particularly the Jiawei Foshou San group. The study result shows that Jiawei Foshou San can induce the enzyme activity of CYP1A2 and CYP3A4, and ligustrazine may be the effective substance for inducing CYP1A2. Its combination with ferulic acid and ligustrazine can significantly reduce the liver toxicity of tetrahydropalmatine.
Animals
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Cytochrome P-450 Enzyme System
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metabolism
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Drugs, Chinese Herbal
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administration & dosage
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Female
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Hepatocytes
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drug effects
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enzymology
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Microsomes, Liver
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drug effects
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enzymology
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Rats
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Rats, Sprague-Dawley
4.A comparison of toxicity and efficacy between busulfan plus fludarabine and busulfan plus cyclophosphamide for allogeneic hematopoietic stem cell transplantation in acute myeloid leukemia
Hui LIU ; Zhiping FAN ; Qianli JIANG ; Fen HUANG ; Hongsheng ZHOU ; Xian ZHANG ; Guopan YU ; Meiqing WU ; Jing SUN ; Qifa LIU
Chinese Journal of Internal Medicine 2012;51(11):880-884
Objective To compare the transplant-related toxicity and the efficacy of busulfan/fludarabine (Bu/Flu) and busulfan/cyclophosphamide (Bu/Cy) as conditioning regimen in allogeneic hematopoietic stem cell transplantation (allo-HSCT) for acute myeloid leukemia(AML) in the first complete remission (CR1).Methods Totally 32 AML-CR1 patients underwent allo-HSCT were divided into Bu/Cy (Bu 3.2 mg· kg-1 · d-1,7-4 days before transplantation; Cy 60 mg · kg-1 · d-1,3-2 days before transplantation) and Bu/Flu (Bu 3.2 mg · kg-1 · d-1,5-2 days before transplantation; Flu 30 mg · m-2·d-1,6-2 days before transplantation) groups.The regimen-related toxicity (RRT),incidence and severity of graft-versus-host disease (GVHD),3-year cumulative relapse rate,non-relapse mortality (NRM),3-year event-free survival (EFS) rate and overall survival (OS) rate were compared between the two groups.Results The median follow-up duration was 617.5 (6-1261) days.All patients achieved successful engraftment on 30 day after transplantation.There were no significant differences in the median time to neutrophil engraftment (P =0.121) and platelet engraftment (P =0.171) between the two groups.The median duration of neutrophil count under 0.1 × 109/L and platelet count under 20 × 109/L in the Bu/Cy group were significantly longer than those in the Bu/Flu group (P =0.000 and P =0.047).The incidence of grades Ⅱ-Ⅳ RRT were 68.8% and 25.0% (P =0.032) in the Bu/Cy and the Bu/Flu groups,respectively.There were no significant differences in the incidence of acute GVHD (P =0.149),chronic GVHD (P =0.149),incidence of NRM (P =0.333),3-year cumulative relapse rates (P =0.834),3-year EFS rate (P =0.362) and OS rate (P =0.111) between the two groups.Conclusion Compared with Bu/Cy,Bu/Flu is a myeloablative condition regimen with milder bone marrow suppression and lower RRT incidence rate in allogeneic HSCT for AML-CR1 patients without compromising the efficacy.
5.Excitatory postsynaptic potential evoked by stimulation of the ventrolateral region of the cerebellum in crucian carp Mauthner cell.
Ying-Cai ZHANG ; Shu-Hua ZHANG ; Xiao-Yi LI ; Xue-Hong TONG ; Fen YU ; Mao-Xian ZHANG
Acta Physiologica Sinica 2003;55(4):459-463
In the present experiments, the characteristics of the electrical responses to stimulation of the cerebellum in crucian carp Mauthner cell were explored with microeletrode intracellular recording technique. A composite excitatory postsynaptic potential (cerebellum-evoked EPSP) could be induced from the soma, the ventral dendrite and the proximal end of the lateral dendrite in crucian carp Mauthner cell (M-cell) on either side by stimulation of the ventrolateral region of the cerebellum. The cerebellum-evoked EPSP presented characteristics of relatively short latency (0.63+/-0.09 ms), longer duration (5.49+/-1.13 ms), graded amplitude and dependence on stimulation frequency. Stimulation of the cerebellum with higher intensity always activated the M-cell orthodromically. Multiple intracellular recordings showed that the cerebellum-evoked EPSP originated in the distal end of the ventral dendrite. The results suggest that the cerebellum-M-cell pathway is probably composed of a group of neuron chains with different numbers of synaptic relays projecting to the distal end of the ventral dendrite in order of length of the chains.
Animals
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Carps
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physiology
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Cerebellum
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physiology
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Dendrites
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physiology
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Electric Stimulation
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Excitatory Postsynaptic Potentials
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physiology
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Neurons
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physiology
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Synapses
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physiology
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Synaptic Transmission
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physiology
7.Effect and mechanism of recombinant hirudin on fibrinolysis.
Ming LI ; Rong-jun ZHANG ; Guo-xian CAO ; Wei-xing WAN ; Lian-fen ZHANG ; Jian JIN
Acta Pharmaceutica Sinica 2006;41(9):814-818
AIMTo study the effect of recombinant hirudin (rH) on tPA-induced fibrinolysis and the possible mechanism of its action.
METHODSThe effect of rH on thrombin-fibrin complex (Th-Fn) was detected by 99mTc labeled rH. In the in vitro clot lysis, tPA as plasminogen activator, and recalcified plasma as plasminogen resource were used to study the influence of rH on fibrinolysis by detecting TAFIa, D-Dimer and FXIII.
RESULTSIn a canine model of femoral artery thrombosis, a clear radioactivity strip was imaged in 30 - 60 min on a part image, and the femoral vein thrombosis developed at 30 min. rH efficiently inhibited clot regeneration. Addition of TM could inhibit clot lysis obviously, and CPI could shorten the delay of clot lysis which due to TAFIa. There was a dose-dependent relationship with TM concentration and TAFI activation. FXIII activation was inhibited by low concentration of rH ( < or = 0.2 u x mL(-1)), and the level of fibrinolysis product, D-Dimer, increased.
CONCLUSIONrH could inhibit the thrombin binding to fibrin. rH inhibited the activation of TAFI and FXIII by combining with thrombin which resulted in enhancement of thrombolysis.
Animals ; Blood Coagulation ; drug effects ; Carboxypeptidase B2 ; metabolism ; Carboxypeptidases ; antagonists & inhibitors ; Dogs ; Factor XIII ; metabolism ; Femoral Artery ; Femoral Vein ; Fibrinolysis ; drug effects ; Fibrinolytic Agents ; pharmacology ; Hirudins ; genetics ; pharmacology ; Male ; Plant Proteins ; pharmacology ; Protease Inhibitors ; Recombinant Proteins ; pharmacology ; Thrombomodulin ; metabolism ; Thrombosis ; metabolism ; Venous Thrombosis ; metabolism
8.Changes in the levels of matrix metalloproteinase-2 and 9 in patients with pressure ulcers using an alternating pressure relief bed mattress
Wei-Ping WANG ; Xian-Fen ZHANG ; Dian-Bao ZHANG ; Xi-Lin CHEN ; Zhe DENG ; Qiu-Ping ZHOU ; Qiang LI ; Jiang-Hui LIU ;
Chinese Journal of Physical Medicine and Rehabilitation 2003;0(04):-
Objective To observe the expression levels of matrix metalloproteinase-2 and 9 (MMP-2, MMP-9) in wound tissue and wound effusion in patients with chronic pressure ulcers treated with an alternating pres- sure relief mattress,and to correlate these observations with wound healing.Methods A total of 24 patients with chronic pressure ulcers were recruited and divided into two groups :one treated with an alternating pressure relief mat- tress and the other without,in addition to conventional treatment for pressure ulcers.The expression of MMP-2 and MMP-9 in the wound tissue and its exudate were amplified with a reverse transeriptase-polymerase chain reaction (RT-PCR) and analyzed using quantitative gelatin zymography.Wound healing was also observed and assessed using the pressure ulcer scale for healing (PUSH).Results The wounds were observed to heal well in both groups,as indicated by a significant decrease in the PUSH scores.Statistical analysis revealed a significant difference between the two groups with regard to the PUSH score on the 21st day after initiation of the study.With the healing of the pressure ulcers,the expression both MMP-2 and MMP-9 decreased.On the seventh and the 21st days,the expression of MMP-2 and MMP-9 in patients treated with an alternating pressure relief mattress was significantly less than in those without the mattress.Conclusion MMP-2 and MMP-9 can be biomarkers for the healing of pressure ulcers. An alternating pressure relief mattress is helpful for treating pressure ulcers.
9.Determination of the fingerprint attribution ratio and process recovery of medicinal effectiveness components for TCM-compound prescription with quantified fingerprint method.
Guo-xiang SUN ; Xiang-fen SHI ; Jing-xian ZHANG ; Kai-shun BI
Acta Pharmaceutica Sinica 2008;43(10):1047-1052
By setting up the organic additive model of chemical fingerprints of TCM-compound, the quantified fingerprint method had been established to solve the qualitative and quantitative analyses problems for both the fingerprint attribution ratio and process recovery of medicinal effective components in TCM-compound prescription. The method firstly performs the qualitative analyses of the attribution ratios, and then the quantitative analyses, which can successfully disclose the results of attribution ratio and determine the process recovery of the medicinal effective components for TCM-compound prescription. Three optional methods were represented to assess the amount and distribution proportion of chemical compositions for single crude drug to compound prescription. In terms of components absorbed ultraviolet light, S5 (Radix Scutellariae) was assessed to be the most important crude drug containing much more effective components, and S7 (Radix Gentianae), S4 (Flos Lonicerae Japonica), S8 (Rhizome Anemarrhena) and S9 (Fructus Gardeniae) were second important crude drugs. The results showed lower process recovery of the medicinal effective components for eight batches of marketed preparations. Above all, the quantified fingerprint method can objectively and accurately reflect how high is the contribution of a single crude drug to the compound prescription, and quantitatively evaluate the process recovery of medicinal effectiveness components.
Chromatography, High Pressure Liquid
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methods
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Drug Combinations
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Drugs, Chinese Herbal
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analysis
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chemistry
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isolation & purification
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Plants, Medicinal
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chemistry
10.Release kinetics of single pellets and the multi-pellet system of tamsulosin hydrochloride sustained release pellets.
Shuo YANG ; Cai-Fen WANG ; Xue LI ; Ying LI ; Xian-Zhen YIN ; Tao GUO ; Ji-Wen ZHANG ; Jun HE ; Li-Xin SUN
Acta Pharmaceutica Sinica 2014;49(4):535-542
The release behavior of single pellet was investigated by LC/MS/MS method with tamsulosin hydrochloride (TSH) as the model drug of the research and then the pellets were divided into four groups according to the drug loading. Comparison of dissolution profiles of each group and capsule were performed using f1 and f2 factor methods to study the difference and similarity. The release profiles of single pellet, each group and capsule were analyzed using principle component analysis (PCA). The particle system was built through Matlab to get the target release profile. The result of this research demonstrated the release behavior of single pellet correlated well with the drug loading. While the dissolution profile of capsule as a reference, the similarity factor of dissolution profiles of the lower drug loading groups were 62.2, 67.1, 53.9, respectively and, 43.3 for highest drug loading group. The particle systems with different pellet distribution and same release profiles were built through release behavior of single pellet. It is of significance to investigate the release behavior of single pellets for studying the release regularity of multiple-unit drug delivery system.
Capsules
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Chemistry, Pharmaceutical
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Chromatography, Liquid
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Delayed-Action Preparations
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Drug Delivery Systems
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Drug Liberation
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Principal Component Analysis
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Sulfonamides
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administration & dosage
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chemistry
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Tandem Mass Spectrometry
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Technology, Pharmaceutical