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"Four in one" is a research idea of identifying the classic prescriptions from the following four dimensions： "nature， location， tendency， and syndrome". The multi-dimensional analysis of the mechanism of classic prescription Zhigancao Tang in treating coronary heart disease helps to understand the syndrome differentiation and treatment thoughts of ZHANG Zhong-jing. The coronary heart disease results from deficiency. The efficacy of Zhigancao Tang in treating coronary heart disease can be elucidated from the "nature，location，tendency， and syndrome". In terms of nature， Zhigancao Tang is pungent and sweet in flavor and warm in property， with the sweet responsible for tonifying deficiency， the pungent for dispersing Yang， resolving Yin， and eliminating surplus pathogen， and the warm for moving Yangqi， nourishing blood， and promoting blood circulation. In terms of location， Zhigancao Tang mainly acts on vessels for restoring the normal circulation of blood in the vessels and improving coronary artery stenosis and the resulting ischemia and anoxia. In terms of tendency， Zhigancao Tang tends to affect the upper and inner parts of the body to tonify deficiency in Zangfu organs， promote fluid production， nourish nutrient blood， and dissipate cold simultaneously， thus alleviating chest impediment. In terms of syndrome， Zhigancao Tang is applicable to fluid exhaustion with blood dryness and Yin-yang-qi-blood deficiency syndrome， manifested as regularly or irregularly intermittent pulse and severe palpitation. Zhigancao Tang has been widely used for the treatment of over 70 diseases classified into 10 systems， especially the cardiovascular diseases， in traditional Chinese medicine （TCM） and western medicine. As the “one” of “four in one”， Zhigancao Tang is composed of multiple Chinese herbs and its therapeutic effect is superior to the sum of its parts. It ameliorates the coronary heart disease by resisting inflammation， protecting against ischemia-reperfusion injury， adjusting the ion channels of myocardial cells， and participating in atrial remodeling and hematopoiesis. Its mechanism and clinical efficacy in the treatment of coronary heart disease have been verified by clinical and experimental studies. The utilization of the thought of "four in one" to analyze classical prescriptions enables the combination of prescriptions with syndromes， which is of great significance to the clinical application and modern development of classical prescriptions.
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Objective:To evaluate the clinical efficacy of modified Sini Powder combined with acupoint application in the treatment of liver depression and spleen deficiency syndrome of diarrhea irritable bowel syndrome(IBS-D). Methods:A total of 104 IBS-D patients with liver depression and spleen deficiency syndrome in our hospital from October 2018 to December 2020 were randomly divided into two groups according to the random number table method, 52 in each group. Both groups took montmorillonite powder orally first. On this basis, the control group was treated with pivirium bromide tablets, and the study group was treated with Modified Sini Powder combined with acupoint application. Both groups were treated for 4 weeks. TCM symptom scores were performed before and after treatment. The levels of serum IL-6, IL-8 and TNF-α were detected by ELISA. The recovery time of stool characteristics, the disappearance time of abdominal pain and the recovery time of stool times were observed and recorded, and the clinical curative effect was evaluated. Results:The total effective rate was 92.3% (48/52) in the observation group and 75.0% (39/52) in the control group, there was significant difference between the two groups ( χ2=5.696, P=0.017). After treatment, the scores of abdominal pain, diarrhea, stool frequency, irritability, mental fatigue and hypochondriac pain in the observation group were significantly lower than those in the control group ( t values were 15.492, 16.827, 13.419, 10.831, 14.736,12.437, respectively, all Ps<0.001), and the levels of serum IL-6, IL-8 and TNF-α were significantly lower than those in the control group ( t values were 16.390, 21.528 and 18.734, respectively, all Ps<0.001). The recovery time of stool characteristics [(3.79 ± 0.63) d vs. (4.84 ± 0.79) d, t=7.493], the disappearance time of abdominal pain [(2.63 ± 0.32) d vs. (3.91 ± 0.37) d, t=18.869], and the recovery time of stool times [(3.26 ± 0.57) d vs. (4.19 ± 0.68) d, t=7.558] in the observation group were significantly shorter than those in the control group ( P<0.01). Conclusion:Modified Sini Powder combined with acupoint application can improve the clinical symptoms of IBS-D patients with liver depression and spleen deficiency syndrome, reduce the level of serum inflammatory cytokines and improve the curative effect.
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There are certain limitations in the application of liver transplantation， resection and radiofrequency ablation for liver cancer. Therefore，specific and selective new drugs are needed to provide better treatment. Curcumin is a hydrophobic polyphenol with a wide range of activities，such as anti-inflammatory，antibacterial，anti-oxidant and anti-tumor properties. Its nano-preparation has stronger growth inhibition and pro-apoptosis effects on tumor cells. Literature retrieval found that curcumin's anti-liver cancer molecular mechanisms include inhibiting cell proliferation by regulating the expressions of relevant miR，glyoxalase 1（GLO1），CD133 and vascular endothelial growth factor （VEGF），inhibiting signal transducer and activator of transcription （STAT3） and YAP expression to induce cell apoptosis，regulating the heat shock protein 70 （HSP70）-Toll-like receptor 4 （TLR4） signaling pathway，Wnt/β-catenin and transforming growth factor（TGF）/epithelial-mesenchymal transition（EMT） pathways，nuclear factor-κB （NF-κB） signaling pathway and nuclear factor E2-related factor 2（Nrf2）/ Kelch-like ECH-related protein 1（Keap1） signaling pathway，inhibiting p38 mitogen-activated protein kinase （MAPK） phosphorylation，to reduce Lin28B expression，regulating phosphatidylinositol 3-kinase （PI3K）/protein kinase B （Akt） signaling pathway and inhibiting G protein-coupled receptors （GPR81）/hydroxycarboxylic acid receptor-1 （HCAR-1） expression to reverse transformation therapy resistance. Curcumin nano-preparation mainly includes polymer micelles，liposomes，loaded microbubbles，nanocapsules and nanoparticles. Curcumin is mainly delivered to liver cancer cells to rapidly release the drug，enhance the anti-liver cancer effect and reduce toxic and side effects in normal liver cells. The mechanisms include activation of DR5/Caspase-mediated exogenous apoptosis pathway and VEGF/VEGF receptors （VEGFRs） signaling pathway，loss of mitochondrial membrane potential and increase of intracellular reactive oxygen species （ROS）. This paper summarizes the molecular mechanism of curcumin and its nano-preparation against liver cancer，in order to further define the molecular mechanism of liver cancer and provide a new reference for its clinical diagnosis and treatment.
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Objective To investigate the therapeutic role and potential mechanisms of astaxanthin (ASX) pretreatment on cecal ligation and puncture (CLP)-induced sepsis in mice .Methods Sepsis was induced by CLP in male mice ,which were then randomly divided into saline control group ,sepsis model group (CLP group) ,and CLP+ASX group (mice received 60 mg/(kg · d) ASX dissolved in olive oil via oral gavage for 14 consecutive days before CLP operation) .① The mice were monitored to assess 72-hour survival rate .② Clinical scores of mice in the three groups were calculated 24 h after CLP to determine the severity of sepsis .Blood samples were collected at 24 h after CLP modeling to determine the serum ALT ,BUN ,TNF-α and IL-6 levels .The intestine ,lung ,liver and kidney tissues were collected to assess organ functions and pathological changes .Results The results showed that mice in CLP group had a significantly lower survival rate at 72 h than those in CLP+ASX group (P=0 .0202) .CLP+ASX sepsis group had a lower clinical score than CLP sepsis group(10 .78 ± 0 .79 vs .13 .67 ± 0 .44 ,P=0 .005) .The tissue histopathology and biochemical analysis revealed that ASX markedly alleviated histological examination damage in the intestines [villus height :(390 .67 ± 14 .58)μm vs .(326 .67 ± 10 .31)μm , P=0 .005] ,lung (lung wet/dry ratio :4.75±0.24 vs.5.05±0.22,P=0.0476),liver[ALT:(105.0±10.53)U/L vs.(174.8±9.289)U/L,P=0.0006] and kidney [BUN:(54 .50 ± 3 .57)mg/dL vs .(69 .17 ± 3 .33)mg/dL , P= 0 .0132] tissues in sepsis .Moreover , significant lower levels of TNF-α [(258 .06 ± 16 .21 )pg/mL vs . (538 .17 ± 30 .80 )pg/mL , P< 0 .0001 ] and IL-6 [(5 .90 ± 0 .80)ng/mL vs .(12 .56 ± 0 .55)ng/mL , P<0 .0001] were discovered in the CLP+ ASX sepsis group in contrast to the CLP sepsis group .Conclusion ASX can significantly lower the mortality of mice with CLP-induced sepsis by improving organ functions and inhibiting the release of inflammatory factors .
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Aim To observe the expression of CXCL12 and its receptor CXCR4 in spleen of rats with adjuvant-induced arthritis (AA) and the effects of paeoniflorin-6′-O-benzene sulfonate (CP-25). Methods AA rats were induced using complete Freund's adjuvant and were randomly divided into normal group,AA group, CP-25 group (50 mg·kg-1) and methotrexate group (MTX,0.5 mg·kg-1),which were treated from d 14 to d 28. HE staining was used to assess the pathologi-cal changes of spleen. The expression of CXCL12 and CXCR4 in spleen was detected by ELISA,immunohis-tochemitry and Western blot. Results CP-25 (50 mg ·kg-1)alleviated the pathological changes of spleen and decreased the expression of CXCL12 and CXCR4 in spleen of AA rats. The pathological changes of spleen and the expression of CXCL12/CXCR4 in spleen revealed a positive correlation. Conclusions Increased expression of CXCL12 and its receptor CX-CR4 may be associated with the pathological changes of spleen in AA rats,which plays an important role in the pathogenesis of RA. CP-25 has obvious therapeutic effect on AA rats and its mechanism may be related to the inhibition of the expression of CXCL12 and CXCR4 in the spleen.
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Objective To evaluate the hypersusceptibility of Astragaloside injection on animal,and provide reference for clinical use with active systemic anaphylaxis (ASA),passive cutaneous anaphylaxis (PCA) and determination of serum sample titer.Methods ASA:Guinea pigs was ip with 0.4,1.6 mg/kg Astragaloside injection five times every other day.On the eleventh day after the last administration,the test substance was quickly injected to fore limb vein,and animal allergy symptoms were observed within 30 min.PCA:Astragaloside injection was ip injected to rats five times every other day and antiserum was collected.The antiserum was appropriately diluted,and sc injected to another group rats for passive sensitization.About 48 hours later,Astragaloside was quickly iv to rats,and the skin allergy was observed.Meanwhile,the antibody titer of the antiserum was determined.Results ASA:Astragaloside injection of 0.4,1.6 mg/kg in guinea pigs did not show any allergic reaction,that is,ASA was negative;PCA:Astragaloside injection of 0.5,2.0 mg/kg in rats did not show any allergic reaction,and Astragaloside specific antibodies were not determined in serum samples.That is,PCA was negative.Conclusion The results of ASA and PCA were negative in the experimental dose,and there was no specific antibody against Astragaloside in the serum prepared by PCA,which indicated that the possibility of hypersensitivity reaction was weak in clinical use.
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Objective To investigate the values of320-slice CTA for the diagnosis and intraoperative application ofintracranial small aneurysms.Metbods Fifty patients with pathologically confirmed intracranial small aneurysms were selected as the study subjects from January 2012 to June 2016.All the patients underwent 320-slice CT examination,and then the diagnostic values of 320-slice CT were discussed.Results Totally 48 patients were confirmed with intracranial small aneurysms and the diagnostic accordance rate was 96％,and there was missed diagnosis in 2 patients and no patients mis-diagnosed.The results by 320-slice CTA were mostly consistent with those by pathological examination.320-slice CTA displayed the site,shape,size,aneurysm neck height and adjacent structure of intracranial small aneurysms clearly in 49 patients,and undeveloped aneurysms due to narrow entrance or intraluminal thrombosis occurred in 1 patient.Conclusion 320-slice CTA gains advantages in diagnosing intracranial small aneurysms such as non invasion and high convenience and provides basis for clinical treatment,and thus is worthy promoting clinically.
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Objective To reveal the cooperation between American military medical research institutes by analyzing the scientific research cooperation networks in order to provide reference for domestic military medical research and its cooperation. Methods A co-occurrence matrix of high frequency research institutes was established by identif-ying the data using literature data analyzing tool TDA and analyzed by visualized tool Ucinet. Results The densely distributed academic cooperation networks in American military medical research institutes were characterized by small world properties and rapid internal knowledge flow with neither absolute knowledge barrier nor knowledge mo-nopolies. The number of co-authorship papers published by military medical research institutes was rather large and tended to increase year by year. The small size research institutes preferred to cooperate between each other. American military medical research institutes did not arbitrarily cooperate with high level research institutes and u-sually cooperated with the same kind of research institutes, including military medical universities, first class uni-versities, and top enterprises. Geo-factor was the most important factor for cooperation in research. Conclusion Frontier basic research, applied basic research, applied military and civilian research should encourage the exten-sive cooperation between military research institutes and excellent civilian research institutes by making full use of the geo-advantages of military medical research institutes. Administrative order and policies should be taken to pro-mote cooperation in military applied research field.
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Objective To evaluate the hypersusceptibility of Astragaloside injection on animal,and provide reference for clinical use with active systemic anaphylaxis (ASA),passive cutaneous anaphylaxis (PCA) and determination of serum sample titer.Methods ASA:Guinea pigs was ip with 0.4,1.6 mg/kg Astragaloside injection five times every other day.On the eleventh day after the last administration,the test substance was quickly injected to fore limb vein,and animal allergy symptoms were observed within 30 min.PCA:Astragaloside injection was ip injected to rats five times every other day and antiserum was collected.The antiserum was appropriately diluted,and sc injected to another group rats for passive sensitization.About 48 hours later,Astragaloside was quickly iv to rats,and the skin allergy was observed.Meanwhile,the antibody titer of the antiserum was determined.Results ASA:Astragaloside injection of 0.4,1.6 mg/kg in guinea pigs did not show any allergic reaction,that is,ASA was negative;PCA:Astragaloside injection of 0.5,2.0 mg/kg in rats did not show any allergic reaction,and Astragaloside specific antibodies were not determined in serum samples.That is,PCA was negative.Conclusion The results of ASA and PCA were negative in the experimental dose,and there was no specific antibody against Astragaloside in the serum prepared by PCA,which indicated that the possibility of hypersensitivity reaction was weak in clinical use.
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Objective To investigate the values of320-slice CTA for the diagnosis and intraoperative application ofintracranial small aneurysms.Metbods Fifty patients with pathologically confirmed intracranial small aneurysms were selected as the study subjects from January 2012 to June 2016.All the patients underwent 320-slice CT examination,and then the diagnostic values of 320-slice CT were discussed.Results Totally 48 patients were confirmed with intracranial small aneurysms and the diagnostic accordance rate was 96％,and there was missed diagnosis in 2 patients and no patients mis-diagnosed.The results by 320-slice CTA were mostly consistent with those by pathological examination.320-slice CTA displayed the site,shape,size,aneurysm neck height and adjacent structure of intracranial small aneurysms clearly in 49 patients,and undeveloped aneurysms due to narrow entrance or intraluminal thrombosis occurred in 1 patient.Conclusion 320-slice CTA gains advantages in diagnosing intracranial small aneurysms such as non invasion and high convenience and provides basis for clinical treatment,and thus is worthy promoting clinically.
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Objective To reveal the cooperation between American military medical research institutes by analyzing the scientific research cooperation networks in order to provide reference for domestic military medical research and its cooperation. Methods A co-occurrence matrix of high frequency research institutes was established by identif-ying the data using literature data analyzing tool TDA and analyzed by visualized tool Ucinet. Results The densely distributed academic cooperation networks in American military medical research institutes were characterized by small world properties and rapid internal knowledge flow with neither absolute knowledge barrier nor knowledge mo-nopolies. The number of co-authorship papers published by military medical research institutes was rather large and tended to increase year by year. The small size research institutes preferred to cooperate between each other. American military medical research institutes did not arbitrarily cooperate with high level research institutes and u-sually cooperated with the same kind of research institutes, including military medical universities, first class uni-versities, and top enterprises. Geo-factor was the most important factor for cooperation in research. Conclusion Frontier basic research, applied basic research, applied military and civilian research should encourage the exten-sive cooperation between military research institutes and excellent civilian research institutes by making full use of the geo-advantages of military medical research institutes. Administrative order and policies should be taken to pro-mote cooperation in military applied research field.
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<p><b>OBJECTIVE</b>To research the distribution characteristics of Chinese medicine (CM) syndrome and syndrome elements of chronic fatigue syndrome (CFS) by analyzing literature in recent 20 years.</p><p><b>METHODS</b>Relevant literature on treating CFS by syndrome differentiation of CM at home were retrieved by computer and manual ways. Database were established by using EpiData 3.1 to conduct frequency analysis of syndrome and syndrome elements.</p><p><b>RESULTS</b>The most common clinical syndromes were Xin-Pi deficiency syndrome, Gan stagnation Pi deficiency syndrome, Gan-Shen yin deficiency syndrome, Gan qi stagnation syndrome, and Pi-Wei qi deficiency syndrome. Disease locations were sequenced as Pi, Gan, Shen, and Xin. The clinical pathogenesis of CFS was characterized by deficiency of vital energy, complicated with intermingled excess and deficiency. Asthenia of healthy energy was mainly manifested as qi deficiency, blood deficiency, and yin deficiency, while excess of sthenia was mainly manifested as qi stagnation, phlegm dampness, and static blood.</p><p><b>CONCLUSIONS</b>Research of CM syndrome starting from syndrome elements can better unify and standardize clinical syndrome differentiation. Results of literature analysis can provide reference for further studies.</p>
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Humans , Fatigue Syndrome, Chronic , Medicine, Chinese Traditional , Yang Deficiency , Yin DeficiencyABSTRACT
<p><b>OBJECTIVE</b>To investigate the effect of small interfering RNA on cell proliferation and apoptosis in gastric cancer cell lines with high expression of RegIα.</p><p><b>METHODS</b>Total RNA was isolated from six gastric cancer cell lines,and the expression of RegI α mRNA was detected by RT-PCR. RegI α RNAi expression vector was constructed and stably transfected into MKN45 and AGS cells with high RegI α expression, empty-vector was used as control. RegI α mRNA and protein expression was measured by RT-PCR and Western blot respectively in stable transfected cell lines. Cell proliferation and apoptosis were detected with MTT assay and flow cytometry.</p><p><b>RESULT</b>RT-PCR results indicated that RegI α mRNA expression was significantly inhibited by RNAi in both cell lines compared with empty-vector. Western blot results showed that RegIα protein was down-regulated to (44 ± 4)% and (25 ± 4)% respectively in MKN45 and AGS cells compared to empty-vector. MTT results showed that cell growth was significantly inhibited in MKN45 and AGS cells. The apoptosis rate in MKN45 and AGS cells was remarkable increased compared to that of empty-vector (12.96 ± 0.50)% compared with (3.99 ± 0.30)% and (11.59 ± 1.10)% compared with (4.22 ± 0.40)% (P < 0.05).</p><p><b>CONCLUSION</b>Small interfering RNA of RegI α gene can efficiently down-regulate RegI α expression in MKN45 and AGS cell lines, and further inhibit cell growth and induce cell apoptosis.</p>
Subject(s)
Animals , Mice , Apoptosis , Genetics , Cell Cycle , Genetics , Cell Line, Tumor , Cell Proliferation , Genetic Vectors , Lithostathine , Genetics , Metabolism , Plasmids , Genetics , RNA, Messenger , Genetics , RNA, Small Interfering , Genetics , Stomach Neoplasms , Genetics , Metabolism , Pathology , TransfectionABSTRACT
<p><b>OBJECTIVE</b>To study the association between the single nucleotide polymorphisms (SNPs) of the 5'-untranslated region (5'-UTR) of phospholipid hydroperoxide glutathione peroxidase (GPx4 or PHGPx) gene and oligo- or asthenozoospermic male infertility.</p><p><b>METHODS</b>The 5'-UTR region of the GPx4 gene was amplified from infertile men and controls using the polymerase chain reaction and was analyzed for polymorphisms by direct sequencing.</p><p><b>RESULTS</b>A total of 9 SNPs were present in the cohort, however there were no significant differences in these 9 SNPs between the case and control groups. According to the results of linkage disequilibrium analysis and haplotype construction, one haplotype (rs757229-rs757230-rs4588110-rs3746165-rs3746166: C-G-G-T-A) was present only in the control men, and significant difference was detected(P< 0.01).</p><p><b>CONCLUSION</b>The SNPs of 5'-UTR region of the GPx4 gene might not be associated with oligo- or asthenozoospermic male infertility. However, the haplotype (rs757229-rs757230-rs4588110- rs3746165-rs3746166: C-G-G-T-A) might be a protective haplotype.</p>
Subject(s)
Adult , Humans , Male , Middle Aged , Young Adult , 5' Untranslated Regions , Genetics , Alleles , Gene Frequency , Genotype , Glutathione Peroxidase , Genetics , Infertility, Male , Genetics , Linkage Disequilibrium , Genetics , Polymorphism, Single Nucleotide , GeneticsABSTRACT
<p><b>OBJECTIVE</b>To construct COL1A1-targeted short hairpin RNA (shRNA) vector with pSilencer 4.1-CMV neo siRNA expression vector and to evaluate its effect on proliferation and migration of gastric cancer BGC-823 cells in vitro.</p><p><b>METHODS</b>Three COL1A1-shRNA plasmids (COL1A1-shRNA-1, COL1A1-shRNA-2, COL1A1-shRNA-3), targeting different sites of COL1A1 gene, were constructed using pSilencer 4.1-CMV neo siRNA expression vector and transfected into gastric cancer BGC-823 cells. Real time quantitative RT-PCR and Western blot were performed to detect expression levels of COL1A1. MTT and Transwell migration assays were employed to evaluate the effects of COL1A1 gene silence on cell proliferation and migration.</p><p><b>RESULT</b>Three recombinant plasmids targeting COL1A1 were constructed successfully. The expressions of COL1A1 in BGC-823 cells, including mRNA and protein levels, were significantly inhibited by the COL1A1-shRNA transfectants, which resulted in a clear reduction of cell proliferation and migration capacity.</p><p><b>CONCLUSION</b>The COL1A1-shRNA can effectively knock down gene expression and inhibit proliferation and migration of gastric cancer BGC-823 cells.</p>
Subject(s)
Humans , Cell Line, Tumor , Cell Proliferation , Collagen Type I , Genetics , Metabolism , Genetic Vectors , Plasmids , Genetics , RNA, Messenger , Genetics , RNA, Small Interfering , Genetics , Stomach Neoplasms , Pathology , Transfection , Transformation, BacterialABSTRACT
<p><b>BACKGROUND</b>Urethroplasty of complex urethral stricture is a difficult procedure, and there is no widely accepted standard approach described in the published literature. We evaluated the efficacy and safety of urethroplasty using lingual mucosa grafts (LMGs) for the repair of urethral strictures.</p><p><b>METHODS</b>Between August 2006 and April 2009, 92 cases of urethral strictures (length ranging from 2.5 cm to 18 cm, mean 6.5 cm) were treated using LMGs. Of the 92 patients, 38 with long-segment urethral strictures (9 - 18 cm) underwent dual LMG or LMG combined with foreskin flap or buccal mucosal graft urethroplasty.</p><p><b>RESULTS</b>Follow-up was obtained for 3 - 33 months (mean 17.2 months) postoperatively. Complications occurred in 8 patients, including urinary fistulas in 4 patients; recurrent strictures developed in 4 patients at 3 - 4 months post-operatively. The remaining patients voided well postoperatively, with peak flows between 14.3 ml/s and 54.6 ml/s (mean 28.4 ml/s).</p><p><b>CONCLUSIONS</b>The tongue is an excellent source of graft material for the repair of anterior mucosal strictures. Dual LMG substitution urethroplasty can successfully treat longer, more complex urethral strictures.</p>
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Adolescent , Adult , Aged , Humans , Middle Aged , Young Adult , Mouth Mucosa , Transplantation , Treatment Outcome , Urethra , General Surgery , Urethral Stricture , General Surgery , Urologic Surgical Procedures, Male , MethodsABSTRACT
<p><b>OBJECTIVE</b>To construct RegIα over-expression vector and to evaluate the effect of RegIα on the proliferation and apoptosis of gastric cancer MKN28 cells in vitro.</p><p><b>METHODS</b>Full sequence of RegIα cDNA was amplified from normal gastric tissue samples by RT-PCR and cloned into pIRES2-EGFP vector. RT-PCR and Western blot were performed to detect expression levels of RegIα in MKN28 cells. The effects of over-expression RegIα on cell proliferation was measured by MTT assay and apoptosis was detected by flow cytometry.</p><p><b>RESULT</b>RegIα cDNA over-expression vector of pIRES2-RegIα-EGFP was successfully constructed. The expressions of RegIα in MKN28 cells, including mRNA and protein levels, were significantly increased after stable transfection, which resulted in cell proliferation and anti-apoptotic effect induced by H(2)O(2).</p><p><b>CONCLUSION</b>The over-expression of RegIα can promote cell proliferation and reduce cell apoptosis when induced by H(2)O(2) in gastric cancer cells.</p>
Subject(s)
Humans , Apoptosis , Cell Line, Tumor , Cell Proliferation , Genetic Vectors , Plasmids , Genetics , Stomach Neoplasms , Metabolism , Pathology , TransfectionABSTRACT
<p><b>OBJECTIVE</b>To study the regulative action of mica monomer powder preparation on the chief and parietal cells as well as G and D cells in the gastric mucosa of the experimental atrophic gastritis (CAG) rats.</p><p><b>METHODS</b>Intervention therapy was given to the experimental CAG rats at three different doses of mica monomer powder preparation to evaluate the changes of chief and parietal cells as well as G and D cells in the gastric mucosa and the histopathological changes of gastric mucosa.</p><p><b>RESULTS</b>Mica monomer powder preparation at three different doses could increase the amount of chief and parietal cells as well as G and D cells in gastric mucosa of the experimental CAG rats and alleviate and control the inflammation of gastric mucosa and the atrophy of gastric mucosa glands. Especially, better effects were shown in the mid and high dose groups.</p><p><b>CONCLUSION</b>Mica has the pharmacological action of protecting the gastric mucosa, enhancing blood flow of the gastric mucosa, and consequently improving the inflammatory responses of the gastric mucosa. One of the mechanisms is associated with promoting the secretion of gastric acid and gastric pepsin and regulating the neuroendocrine mechanism including gut hormone secretion (gastrin and somatostatin) by increasing the number of chief and parietal cells as well as G and D cells.</p>
Subject(s)
Animals , Rats , Aluminum Silicates , Pharmacology , Cell Count , Chief Cells, Gastric , Pathology , Chronic Disease , Gastric Mucosa , Pathology , Gastrin-Secreting Cells , Pathology , Gastritis, Atrophic , Pathology , Inflammation , Parietal Cells, Gastric , Pathology , Powders , Rats, Sprague-Dawley , Somatostatin-Secreting Cells , PathologyABSTRACT
<p><b>OBJECTIVE</b>To explore the mucosal protective effect on the quality of gastric ulcer healing.</p><p><b>METHODS</b>Gastric ulcers were induced in male rats by serosal application of acetic acid. Rats were gavaged for 14 days with saline, omeprazole (OME), teprenone (TEP) and TEP plus OME starting 3 days after ulcer induction. Then the tissues and blood samples were obtained and measured.</p><p><b>RESULT</b>The lower ulcer index (UI) and increased ulcer inhibition rate were observed in OME and OME+TEP groups. In TEP and OME+TEP groups, restored mucosa thickness increased, cystically dilated glands decreased, microvessels in connective tissue increased, the secretion of mucus, hexosamine, PGE(2), bFGF were enhanced, the expression of EGFR was increased.</p><p><b>CONCLUSION</b>TEP can improve the quality of gastric ulcer healing, when combined with OME,the effect is more marked.</p>
Subject(s)
Animals , Male , Rats , Acetic Acid , Anti-Ulcer Agents , Therapeutic Uses , Diterpenes , Therapeutic Uses , Drug Therapy, Combination , Gastric Mucosa , Metabolism , Pathology , Omeprazole , Therapeutic Uses , Rats, Wistar , ErbB Receptors , Secondary Prevention , Stomach Ulcer , Drug Therapy , Pathology , Wound HealingABSTRACT
Several models of experimental ulcerative colitis have been reported previously. However, none of these models showed the optimum characteristics. Although dextran sulfate sodium-induced colitis results in inflammation resembling ulcerative colitis, an obvious obstacle is that dextran sulfate sodium is very expensive. The aim of this study was to develop an inexpensive model of colitis in rats. Sprague-Dawley rats were treated with 2% dextran sulfate sodium in drinking water for 3 d followed by an intracolonic administration of 30% ethanol. The administration of 2% dextran sulfate sodium followed by 30% ethanol induced significant weight loss, diarrhea and hematochezia in rats. Severe ulceration and inflammation of the distal part of rat colon were developed rapidly. Histological examination showed increased infiltration of polymorphonuclear leukocytes, lymphocytes and existence of cryptic abscesses and dysplasia. The model induced by dextran sulfate sodium at lower concentration followed by 30% ethanol is characterized by a clinical course, localization of the lesions and histopathological features similar to human ulcerative colitis and fulfills the criteria set out at the beginning of this study.