1.Advances in plant anthocyanin transport mechanism.
Lu WANG ; Silan DAI ; Xuehua JIN ; He HUANG ; Yan HONG
Chinese Journal of Biotechnology 2014;30(6):848-863
Anthocyanin biosynthesis is one of the thoroughly studied enzymatic pathways in biology, but little is known about the molecular mechanisms of its final stage: the transport of the anthocyanins into the vacuole. A clear picture of the dynamic trafficking of flavonoids is only now beginning to emerge. So far four different models have been proposed to explain the transport of anthocyanins from biosynthetic sites to the central vacuole, and four types of transporters have been found associated with the transport of anthocyanins: glutathione S-transferase, multidrug resistance-associated protein, multidrug and toxic compound extrusion, bilitranslocase-homologue. The functions of these proteins and related genes have also been studied. Although different models have been proposed, cellular and subcellular information is still lacking for reconciliation of different lines of evidence in various anthocyanin sequestration studies. According to the information available, through sequence analysis, gene expression analysis, subcellular positioning and complementation experiments, the function and location of these transporters can be explored, and the anthocyanin transport mechanism can be better understood.
Anthocyanins
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metabolism
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Biological Transport
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Glutathione Transferase
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metabolism
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Membrane Transport Proteins
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metabolism
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Multidrug Resistance-Associated Proteins
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metabolism
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Plants
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metabolism
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Vacuoles
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metabolism
2.Gitelman′s syndrome (report of 2 cases)
Hong TAO ; Weixin DAI ; Zhaolin LU ; Yan JIANG
Chinese Journal of Endocrinology and Metabolism 1986;0(04):-
Objective To study the clinical characteristics of Gitelman′s syndrome, and the differentiation of Gitelman′s syndrome from Bartter′s syndrome. Methods Clinical data of 2 patients diagnosed as Gitelman′s syndrome were retrospectively analysed. Results The symptoms of both patients appeared at adult age, their main manifestation included hypokalaemic alkalosis, hyperreninemia and juxtaglomerular apparatus hyperplasia with normal blood pressure, hypocalciuria and hypomagnesemia, then the diagnosis of Gitelman′s syndrome was established. Potassium and magnesium supplementation ameliorated one patient′s symptom. Another patient treated with indomethacin, serum potassium was recovered to normal level. Conclusion Gitelman′s syndrome and Bartter′s syndrome appear to be similar in the pathogenesis, clinical manifestation and prognosis, but still show some differences, Gitelman′s syndrome should be carefully differentiated from Bartter′s syndrome.
3.The character of superior semicircular canal dehiscence syndrome on multi-slice CT
Lichun ZHANG ; Yan SHA ; Rujian HONG ; Chunfu DAI ; Fanglu CHI
Chinese Journal of Radiology 2009;43(10):1027-1030
Objective To better understand the MSCT characteristic of superior semicircular canal dehiscence syndrome (SSCDS). Methods A retrospective study was conducted on 8 patients who were diagnosed with SSCD syndrome in the otology and skull base surgery group of fudan university. All the patients CT features, the conventional axial and coronal images base on high-resolution MSCT and the images displayed the whole superior semicircular canal, which were reconstructed by using the technology of MPR, were reviewed. Results All the images that displayed the whole superior semicircular canal exhibited the dehiscence. Six patients' dehiscences occur in the middle of the roof over the superior semicircular (4 of 6 dehiscences also occur in the front of the roof), 2 patients dehiscences occur in the back of the roof over the superior semicircular. The range of the maximal diameter of the dehiscence was 0.8-4.2 mm, (median value: 2.4 mm). Conclusion The technology of MPR based on the high-resolution MSCT scan is very useful in diagnosis of the SSCDS.
4.Efficacy of itopride combined with alpha-lipoic acid for patients with diabetic gastroparesis
Gang MA ; Weijie DAI ; Wei YAN ; Hong ZHANG
Chinese Journal of General Practitioners 2015;14(10):760-764
Objective To evaluate the efficacy of itopride hydrochloride combined with alpha-lipoic acid in treatment of diabetic gastroparesis.Methods One hundred and ten patients with diabetic gastroparesis were randomly assigned to two groups.Sixty patients received α-lipoic acid plus itopride (α-lipoic acid 0.6 g intravenously for 14 d plus itopride 50 mg orally t.i.d), and 50 cases received oral itopride only.The clinical symptoms including postprandial abdominal fullness, belching, acid reflux, anorexia, nausea and vomiting were observed;the gastric emptying rate was tested, and plasma motilin and serum ganstrin levels were measured groups, before and after two weeks of treatment.Results The clinical symptom scores of combination therapy group (4.62 ± 3.46 vs.12.26-± 3.43) and control groups (5.43-± 3.65 vs.12.31-± 3.37) were improved after treatment.The overall effective rate of combination group was 91.6% and that of itopride therapy group was 78.0% (x2 =4.098, P < 0.05).Gastric emptying rate of combination group [(76.9 ± 9.7) % vs.(37.3 ± 10.2) %] was increased more markedly than that ofitopridegroup[(57.2-± 10.4)% vs.(36.8-± 11.2)%] (t =10.221, P <0.05).Plasma motilin and serum ganstrin levels in combination group [(640.2 ± 64.4) ng/L vs.(554.0 ± 67.6) ng/L, (152.6 ± 20.3)ng/L vs.(96.8 ± 22.2)ng/L] were reduced more markedly than those in itopride group [(636.3 ±66.4)ng/L vs.(589.4 48.3)ng/L, (153.5-± 19.4) ng/L vs.(120.9 ± 19.7)ng/L] respectively (t =3.100, 5.959, all P < 0.05).Conclusion For patients with diabetic gastroparesis, α-lipoic acid and itopride combination therapy can significantly improve symptoms and gastric emptying rate, decrease motlin and gastrin levels;and the efficacy of combination therapy is better than that of itopride monotherapy.
5.Construction of the High Throughput Technology for Screening Osmotic Stress Relevant Genes
Liang YANG ; Wei JI ; Cui-Hong DAI ; Yan-Ming ZHU ;
China Biotechnology 2006;0(06):-
With the development of functional genomics, high throughput analysis of genes’ function has been the mainstream of research, and exogenous gene's over expression via Agrobacterium-mediated transformation is the most commonly used method in gene functional analysis.The versatile plant expression vector cassette named pBHT-5 was constructed by the method of site-specific mutagenesis based on pBI121. First of all, the restriction enzyme SfiI recognition site in trfA gene (X00713) which was relevant to plasmid replication and stability was replaced without changing its amino acid composition. And then the SfiIA,SfiIB sites were added between promoter CaMV35s and terminator NOS. The versatile plant expression vector cassette can be directly used to construct plant expression vector containing the full-length genes cloned by Clontech SMARTTM technology, which will raise the efficiency of vector construction. The result will provide basis of new genes’ high throughput screening and functional analysis, then get the new genes functioning in plant osmotic stress resistance.
6.Thrombolysis and anticoagulant therapy for post-traumatic acute submassive pulmonary embolism in middle-aged and elderly patients
Jianwen FEI ; Yan TANG ; Junjie JIANG ; Lijun KANG ; Hong DAI
Chinese Journal of Geriatrics 2013;32(7):734-737
Objective To compare the efficacy and safety of thrombolysis and anticoagulant therapy for post-traumatic acute submassive pulmonary embolism (PE) in middle-aged and elderly patients.Methods Totally 45 patients with post-traumatic acute submassive pulmonary embolism in our hospital were selected.Patients were divided into thrombolysis group (n =22) and anticoagulation group (n=23) according to their conditions.Symptoms and signs,blood gas analysis,D-dimer,echocardiography,CT pulmonary angiography (CTPA) were performed before and after thrombolysis or anticoagulant therapy.Results There were no significant differences in clinical curative rate between thrombolysis group and anticoagulation group [95.5% (21/22) vs.91.3% (21/23),x2 =0.32,P>0.05],and no case was found dead in both two groups.There was a significant difference in hemorrhage rate between thrombolysis group and anticoagulation group [27.3% vs.4.3%,x2 =4.53,P < 0.05].At 24 hours after thrombolysis or anticoagulant therapy,the improvement rate of dyspnea,PaO2 level was significantly higher and the pulmonary arterial pressure was significantly lower in thrombolysis group than in anticoagulation group [45.5% (10/22) vs.17.4% (4/23),(80.4±8.1) mm Hg vs.(73.6±9.3) mm Hg,(51.2±6.2) mm Hgvs.(60.3±5.7) mm Hg,respectively,all P<0.05],and there were no statistical significances at other time points between the two groups.Conclusions The clinical curative rate and fatality rate are similar in thrombolysis group versus anticoagulation group.Hemorrhage rate is higher in thrombolysis group than in anticoagulation group.Thrombolysis can relieve dyspnea rapidly,reduce pulmonary artery pressure and make the embolized blood vessels recanalized.Patients with low bleeding risk in a critical condition are suggested to take thrombolysis therapy,while patients with high bleeding risk in a light condition are suggested to take anticoagulant therapy.
7.Bioequivalence of domestic nimodipine capsules and toblets
Hong ZHANG ; Jun FU ; Qun DAI ; Yan-Yan LI ; Yu-Qing XIONG ;
Chinese Journal of Clinical Pharmacology and Therapeutics 2000;0(03):-
0.05). The relative bioavailability of tested capsules to reference tablets was (99.3?13.1)% Conclusion Both formulations are of bioequivalence.
8.Clinical study on mild moxibustion for knee osteoarthritis
Ming DAI ; Xiao-Yan FANG ; Hui-Yi CHEN ; Yan-Hong WANG ; Yi-Wen WU
Journal of Acupuncture and Tuina Science 2019;17(1):62-66
Objective:To observe the clinical effect of mild moxibustion for knee osteoarthritis (KOA) and to explore the role of mild moxibustion in relieving pain,reducing stiffness and improving joint dysfunction in patients with KOA.Methods:Eighty patients with KOA were randomly allocated into either a moxibustion group or a medication group by the random number table,with 40 cases in each group.The moxibustion group used mild moxibustion at Neixiyan (EX-LE 5),Dubi (ST 35),Xuehai (SP 10) and Liangqiu (ST 34),30 min each time,3 times a week;the medication group was given celecoxib capsule (celebrex),0.2 g each time,once a day.Both groups were treated for 4 weeks.The visual analog scale (VAS) and Western Ontario and McMaster Universities osteoarthritis index (WOMAC)scores were evaluated before and after treatment.The efficacy of the two groups was compared after treatment.Results:After treatment,the overall efficacy of the moxibustion group was significantly different from that of the medication group (P<0.05).The VAS and WOMAC scores of the two groups were lower than those before treatment (both P<0.01).The changes in the VAS and WOMAC scores after treatment in the moxibustion group were significantly different from those in the medication group (both P<0.05).After treatment,in single item of WOMAC,the changes in pain and joint dysfunction in the moxibustion group were more statistically significant than those in the medication group (both P<0.05).Conclusion:Mild moxibustion and oral celebrex can reduce the VAS and WOMAC scores of patients with KOA.Mild moxibustion is superior to oral celebrex in relieving pain and improving joint function.
9.Review: plant polyphenols modulate lipid metabolism and related molecular mechanism.
Yan-li DAI ; Yu-xiao ZOU ; Fan LIU ; Hong-zhi LI
China Journal of Chinese Materia Medica 2015;40(21):4136-4141
Lipid metabolism disorder is an important risk factor to obesity, hyperlipidemia and type 2 diabetes as well as other chronic metabolic disease. It is also a key target in preventing metabolic syndrome, chronic disease prevention. Plant polyphenol plays an important role in maintaining or improving lipid profile in a variety of ways. including regulating cholesterol absorption, inhibiting synthesis and secretion of triglyceride, and lowering plasma low density lipoprotein oxidation, etc. The purpose of this article is to review the lipid regulation effects of plant polyphenols and its related mechanisms.
Animals
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Humans
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Lipid Metabolism
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drug effects
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Metabolic Diseases
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drug therapy
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metabolism
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Polyphenols
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pharmacology
10.FOLFOX regimen in the patients with locally advanced or metastatic gastric cancer.
Chinese Journal of Oncology 2009;31(3):217-219
OBJECTIVEThe aim of this study is to investigate the efficiency and toxicity of the FOLFOX regimen, the combination of oxaliplatin (L-OHP), 5-fluorouracil (5-Fu) and calcium folinate (CF), for patients with locally advanced or metastatic gastric cancer.
METHODSNinety-six patients with locally advanced or metastatic gastric adenocarcinoma, including 72 males and 24 females, were treated with FOLFOX regimen: L-OHP 85 mg/m(2) iv in 2 hours on D1, CF 200 mg/m(2) iv in 2 hours on D1 and D2, 5-Fu 400 mg/m(2) iv on D1 and D2, and then continuous infusion of it at a dose of 600 mg/m(2) for 44 hours. This regimen was repeated every 2 weeks. The first evaluation was done after four cycles. The median cycle of the chemotherapy was 6 (range: 1 to 12 cycles).
RESULTSOf the 96 patients with gastric cancers, 21 underwent R0 resection and afterward received adjuvant FOLFOX chemotherapy. Ten of those were still alive, while the other 11 died of the disease, with a median disease free survival time of 24.0 months and 3-year survival rate of 51.8%. The other 75 received only palliative chemotherapy due to non-operable advanced disease. Thirty of those achieved partial response (PR), the other 20 had a stable disease (SD), but the remaining 25 experienced disease progression (PD), with an overall response rate of 40.0%. The median TTP and overall survival in those 75 patients was 5.9 and 12.0 months, respectively. All 96 patients were evaluable for toxicity according to NCI criteria. The patients of grade 3 vomiting and neural toxicity were 6 and 4, respectively.
CONCLUSIONIn terms of efficacy and safety, the FOLFOX regimen is effective and well tolerable for patients with locally advanced or metastatic gastric cancers either as adjuvant or palliative chemotherapy.
Adenocarcinoma ; drug therapy ; pathology ; secondary ; surgery ; Adult ; Aged ; Aged, 80 and over ; Antineoplastic Combined Chemotherapy Protocols ; adverse effects ; therapeutic use ; Carcinoma, Signet Ring Cell ; drug therapy ; pathology ; secondary ; surgery ; Chemotherapy, Adjuvant ; Disease-Free Survival ; Female ; Fluorouracil ; administration & dosage ; adverse effects ; therapeutic use ; Follow-Up Studies ; Humans ; Leucovorin ; administration & dosage ; adverse effects ; therapeutic use ; Liver Neoplasms ; drug therapy ; secondary ; Lymphatic Metastasis ; Male ; Middle Aged ; Neutropenia ; chemically induced ; Organoplatinum Compounds ; administration & dosage ; adverse effects ; therapeutic use ; Palliative Care ; Remission Induction ; Stomach Neoplasms ; drug therapy ; pathology ; surgery ; Survival Rate ; Vomiting ; chemically induced