Potential Alendronate Sodium drug carrier by preparation and characterization of sodium alginate cross-linked Montmorillonite

Abstract In drug therapy, it is important to provide therapeutic levels of drug to the site of action and maintain them during the treatment. This work describes the in vitro release of alendronate from sodium alginate cross-linked Montmorillonite (MMT) composite beads. Effect of crosslinking cation, concentration of montmorillonite and media on encapsulation efficiencies, and release profiles of alendronate were studied. Beads were characterized using equilibrium swelling ability study, Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), Energy-dispersive x-ray spectroscopy (EDX) and scanning electron microscopy (SEM). Results indicate that addition of montmorillonite increases the encapsulation efficiencies and slows down the release rates significantly.

In Vitro and In Vivo evaluation of montmorillonite for paraquat poisoning

Abstract Evaluation of montmorillonite for paraquat by in vitro and in vivo test. In vitro test were evaluated by a batch test, taking the paraquat concentration, adsorbents, reaction environment and time as indices, the absorption rate was screened by orthogonal design. In vivo test was executed with rabbits. Group 1: 4 rabbits dosed with montmorillonite. Group 2: 8 rabbits dosed with 200 mg/kg paraquat. Group 3: 6 rabbits dosed with 200 mg/kg paraquat then gavage with montmorillonite 5 min later. Group 4: 6 rabbits dosed with 200 mg/kg paraquat then gavage with montmorillonite 30 min later. Blood paraquat concentration, serum cytokines, blood gas analysis and histopathology of lung were implemented. In vitro test found that all the four factors influence the absorption rate of paraquat (P < 0.05). In vitro test found that oral montmorillonite could change toxicokinetics parameters of paraquat (P < 0.05); decrease raised serum TGF-ß1 and HMGB1 (P < 0.05) and alleviate the histopathology damage of lung. Montmorillonite might exert its protective effects on paraquat induced damage

Preparation and in vitro evaluation of Vancomycin loaded Montmorillonite-Sodium Alginate topical gel for wound infection

Abstract Despite decades of research, wound healing remains a significant public health problem. This study aimed to develop and evaluate a topical sodium alginate gel containing vancomycin (Van) loaded MMT NPs for wound healing applications. Van was loaded in MMT at different conditions (pHs of 6, 7 and temperatures of 40, 50 °C) (Van/MMT NPs). The optimum formulation (with the smallest particle size and a high value of zeta potential; 270.8 ± 77.35 nm and -35.96 ± 2.73, respectively) showed a high drug-loading capacity (entrapment efficacy of 96%) and a sustained release pattern of Van (95%) over 480 min. The optimum Van/MMT NPs were embedded into the sodium alginate (SA) gel (Van/MMT NPs/SA gel). The Van/ MMT NPs/SA gel showed a sustained and slow release pattern of Van (95%) over 50 h. FTIR tests revealed the electrostatic interaction between MMT and Van. The broth macrodilution tube method was used to determine the minimum inhibitory concentration (MIC) of Van, Van/ MMT NPs, and Van/MMT NPs/SA gel against Staphylococcus aureus. The results showed the promising antibacterial activity of Van/MMT NPs/SA gel, thus, this gel can be a promising formulation for the management of infected wounds

Curcumin encapsulated dual cross linked sodium alginate/montmorillonite polymeric composite beads for controlled drug delivery / 药物分析学报

The aim of the present work is fabrication of dual cross linked sodium alginate(SA)/montmorillonite(MMT)microbeads as a potential drug vehicle for extended release of curcumin(CUR).The microbeads were prepared using in situ ion-exchange followed by simple ionotropic gelation technique.The developed beads were characterized by Fourier transform infrared spectroscopy(FTIR),differential scanning calorimetry(DSC),thermogravimetric analysis(TGA),X-ray diffraction(X-RD)and scanning electron microscopy(SEM).The effect of MMT on encapsulation efficiency of CUR and intercalation ki-netics was investigated.Dynamic swelling study and in vitro release study were investigated in simu-lated intestinal fluid(pH 7.4)and simulated gastric fluid(pH 1.2)at 37℃.Results suggested that both the swelling and in vitro release studies were influenced by the pH of test media,which might be suitable for intestinal drug delivery.The release mechanism was analyzed by fitting the release data into Korsmeyer-Peppas equation.

Carvacrol-loaded polyvinyl alcohol/montmorillonite clay nanocomposite (PVA/MONT/Carva) as an antimicrobial agent for wound dressing

Aims@#This research was conducted to develop and characterize polyvinyl alcohol (PVA)/montmorillonite (MONT) clay incorporated with carvacrol (Carva) nanocomposite film as a potential material in wound dressing.@*Methodology and results@#Organophilic MONT clay, which was initially modified from commercial MONT clay by cetyltrimethylammonium bromide (CTAB), was used in the polymerization process using PVA. The synthesized nanocomposites were visualized via transmission electron microscopy (TEM). The developed film (PVA/MONT/Carva nanocomposite film) was characterized via Fourier transform infrared (FTIR). The investigation on mechanical property and antimicrobial activity of the film was also performed. All nanocomposites are spherical, with a size of 92.8 ± 22.1 nm. The -OH stretch, C-H stretch, aromatic group, SiO stretch, and C-O from acetyl group were identified in the PVA/MONT/Carva nanocomposite films. During the chemical release test, carvacrol attained a plateau at 24 h, with a total release of 62.3%. This nanocomposite exhibited a severe detrimental influence on the growth of Gram-bacteria and yeasts, which represented a broad spectrum of antimicrobial agents. All test microorganisms showed approximately up to 82% reduction of microbial growth during the Hohenstein challenge test. Physically, the nanocomposite films were yellowish and apparent. The film was sturdy, flexible, elastic and consisted of excellent water holding capacity.@*Conclusion, significance and impact of study@#PVA/MONT/Carva nanocomposite film may have a useful potential to be merged in the pharmaceutical application, especially in wound dressing production.

Influence of montmorillonite powder combined with racecadotril granules on serum IL-2,IL-6,IL-10 and hs-CRP levels in children with rotavirus enteritis / 中国基层医药

Objective To investigate the effect of montmorillonite powder combined with racecadotril granules on serum levels of interleukin-2 (IL-2),interleukin-6 (IL-6),interleukin-10 (IL-10) and high-sensitivity C-reactive protein (hs-CRP) in children with rotavirus enteritis.Methods From June 2014 to July 2016,76 children with rotavirus enteritis in the People's Hospital of Pujiang County were selected and randomly divided into control group and study group according to the digital table,with 38 cases in each group.The two groups were given basic treatment after admission,on the basis,the control group was treated with montmorillonite powder,and the study group was treated with montmorillonite powder combined with racecadotril granules.The two groups were treated for 3 days.The clinical efficacy,clinical symptoms (stool,stool frequency,dehydration,vomiting,fever) recovery time,serum IL-2,IL-6,IL-10 and hs-CRP levels at admission and after treatment,and the incidence of adverse reactions were statistically compared between the two groups.Results The clinical efficacy of the study group (mild constipation,rash,nausea) was better than the control group[19 cases(50.00％) vs.11 cases(28.95％),16 cases(42.11％)vs.15 cases(39.47％),3 cases(7.89％) vs.12 cases(31.58％)],the difference was statistically significant(Z =2.358,P ＜ 0.05).The recovery time of stool character[(45.58 ± 10.11) h],stool frequency [(44.96 ± 10.03) h],dehydration[(33.15 ± 10.27)h],vomit[(18.16 ±6.46)h],and fever[(25.51 ± 10.32)h]of the study group were less than those of the control group(t =9.618,8.344,8.557,3.921,9.487,all P ＜ 0.05).The serum levels of IL-2,IL-6,IL-10 and hs-CRP before treatment between the two groups had no statistically significant differences (all P ＞ 0.05).After treatment,the serum levels of IL-2 and IL-10 in the study group were higher than those in the control group,the serum levels of IL-6 and hs-CRP were lower than those in the control group,the differences were statistically significant(t =5.545,7.705,7.090,10.352,all P ＜ 0.05).The incidence rate of adverse reactions between the study group and the control group had no statistically significant difference(10.52％ vs.13.15％,x2 =0.000,P ＞ 0.05).Conclusion Montmorillonite powder combined with racecadotril granules in the treatment of rotavirus enteritis can effectively relieve the clinical symptoms,improve the serum inflammatory factors level,reduce the inflammatory reaction in vivo,improve the therapeutic effect and has high safety.

Effect of bifid triple viable tablets combined with montmorillonite powder in the prognosis of children with diarrhea / 中国生化药物杂志

Objective To study the effect of Bifid Triple Viable tablets combined with montmorillonite powder in the prognosis of children with diarrhea.Methods100 cases of diarrhea patients from October 2015 to December 2016 were selected.The patients were divided into control group and observation group.The control group was treated with Bifid Triple Viable tablets.The observation group was treated with Bifid Triple Viable tablets combined with montmorillonite powder treatment, compared the two groups of patients with the indicators and treatment.ResultsThe indexes of the observation group were better than the control group, the difference between the groups were statistically significant (P<0.05).The total effective rate (98.00%) in the observation group, which was significantly higher than that in the control group (78.00%), the difference between the groups were statistically significant(P<0.05).ConclusionThe combination of Bifid Triple Viable tablets combined with montmorillonite powder in the treatment of diarrhea patients can effectively improve the prognosis of patients and accelerate the remission time of patients, which is worth applying.

Kelisha Capsules inhibit acetic acid colitis in rats / 中成药

AIM To observe the effects of Kelisha Capsules (Angelicae dahuricae Radix,Atractylodis Rhizoma,Acori tatarinowii Rhizoma,etc.) on rats with acetic acid colitis.METHODS Seventy rats were randomly divided into normal group,model group,Montmorillonite Powder group,sulfasalazine (SASP) group,low-,medium-and high-dose of Kelisha Capsules groups.Except for the normal group,10％ acetic acid solution was injected into the anus of rats in another six groups to establish model for ulcerative colitis.After administration for fourteen days,general conditions and status of feces were observed,the levels of serum IL-1β,IL-6,TNF-α and EGF were measured on the 1 st,10th,14th days by ELISA.After the 15th day,the injury to colon mucosa of rats was observed,and damage indexes were evaluated.RESULTS Compared with the model group,the inflammatory condition of colon mucosa in the Kelisha Capsules groups was improved,which was less obvious than that in the SASP group.Compared with the SASP group,the levels of serum IL-1β,IL-6 and TNF-oα in the Kelisha Capsules groups were increased on the 10th,14th days,and the difference between the low-dose group and the SASP group had statistical significance (P ＜ 0.05).Compared with the Montmorillonite Powder group,the level of serum EGF in the Kelisha Capsules groups was decreased on the 10th,14th days,which was higher than that in the SASP group,and the difference between the high-dose group and the SASP group had statistical significance (P ＜ 0.05).CONCLUSION The effect of Kelisha Capsules on rats with acetic acid colitis is better than that of Montmorillonite Powder,but is not as effective as that of SASP.

Kelisha Capsules inhibit acetic acid colitis in rats / 中成药

AIM To observe the effects of Kelisha Capsules (Angelicae dahuricae Radix,Atractylodis Rhizoma,Acori tatarinowii Rhizoma,etc.) on rats with acetic acid colitis.METHODS Seventy rats were randomly divided into normal group,model group,Montmorillonite Powder group,sulfasalazine (SASP) group,low-,medium-and high-dose of Kelisha Capsules groups.Except for the normal group,10％ acetic acid solution was injected into the anus of rats in another six groups to establish model for ulcerative colitis.After administration for fourteen days,general conditions and status of feces were observed,the levels of serum IL-1β,IL-6,TNF-α and EGF were measured on the 1 st,10th,14th days by ELISA.After the 15th day,the injury to colon mucosa of rats was observed,and damage indexes were evaluated.RESULTS Compared with the model group,the inflammatory condition of colon mucosa in the Kelisha Capsules groups was improved,which was less obvious than that in the SASP group.Compared with the SASP group,the levels of serum IL-1β,IL-6 and TNF-oα in the Kelisha Capsules groups were increased on the 10th,14th days,and the difference between the low-dose group and the SASP group had statistical significance (P ＜ 0.05).Compared with the Montmorillonite Powder group,the level of serum EGF in the Kelisha Capsules groups was decreased on the 10th,14th days,which was higher than that in the SASP group,and the difference between the high-dose group and the SASP group had statistical significance (P ＜ 0.05).CONCLUSION The effect of Kelisha Capsules on rats with acetic acid colitis is better than that of Montmorillonite Powder,but is not as effective as that of SASP.

Clinical observation of Montmorillonite combined with Compound Eosinophil-Lactobacillus Tablet in treatment of pneumonia infants of antibiotic associated diarrhea / 药物评价研究

Objective To discuss the clinical observation of Montmorillonite combined with Compound Eosinophil-Lactobacillus Tablet in the treatment of pneumonia infants of antibiotic associated diarrhea (AAD).Methods Eighty pneumonia infants with antibiotic associated diarrhea were selected,they were divided into two groups according to the random number table method.The observation group (41 cases) was given Montmorillonite.The control group (39 cases) was given Montmorillonite and Compound Eosinophil-Lactobacillus.The efficacy of Montmorillonite combined with compound Eosinophil-Lactobacillus Tablet in the treatment of pneumonia infants of antibiotic associated diarrhea was evaluated by efficacy,clinical symptom,immune function changes and adverse reactions during the treatment period.Results After treatment,the effective rate of observation group was higher than that of the control group (P ＜ 0.05).After treatment,the fever time,correcting dehydration time,and antidiarrheal time of observation group was shorter than that of the control group (P ＜ 0.05).After treatment,the serum IgG,IgA,and T lymphocyte subsets of CD3+,CD4+ levels were significantly increased in the observation group (P ＜ 0.05).There was no statistical significance on CD8+ before and after treatment.In contrast,there were no statistical significance on the serum immunoglobulin and T lymphocyte subsets before and after treatment in the control group.During the treatment period,no adverse reaction occurred in two groups.Conclusion In summary,Montmorillonite combined with Compound Eosinophil-Lactobacillus Tablet had a good effect on AAD.They could quickly improve the symptoms of diarrhea and immunoglobulin levels in children.It was worthy of clinical use.

Preparation of Methotrexate Sustained-Release Microspheres / 中国药学杂志

OBJECTIVE: To prepare a novel methotrexate sustained-release microspheres system, and study its in vitro release properties. METHODS: The CS-montmorillonite (CS-MMT) intercalative composites were prepared by using chitosan and montmorillonite. The novel drug sustained-release system was prepared with CS-MMT as the carrier material and methotrexate as the model drug. The microspheres were characterized by Fourier transform infrared spectrometer (FTIR), electric microscope, UV-spectrophotometer (UV), as well as Malvernlaser particle size analyzer. The influences of the amount of composite materials, dosage of emulsifiers, ratio of oil/water and dosage of crosslinking agent on the drug loading and entrapment rate of microspheres were investigated. And in vitro release experiment was used to study the drug release properties of the microspheres. RESULTS: The shape and size of the microspheres were uniform. The drug loading, average particle size and Zeta potential were 31.6%, 557.4 nm and 20.8 mV respectively under the optimal conditions, ie, ratio of water/oil of 1∶5, amount of glutaraldehyde(aqueous phase)of 6%, dosage of emulsifiers (oil phase) of 7%, CS-MMT/CS ratio of 1∶4, and MTX/CS ratio of 1∶3. Methotrexate sustained-release system was pH-sensitive and tended to show a larger release percentage in hydrochloric acid solution. CONCLUSION: CS-MMT can be used as a slow-release excipient. CS-MMT microspheres are good controlled-release carrier for drugs, with pH sensitivity.

Efficacy of montmorillonite combined with oxygen in the treatment of neonatal diaper dermatitis / 中国生化药物杂志

Objective To observe the efficacy of montmorillonite combined with oxygen in the treatment of neonatal diaper dermatitis, and to provide the basis for clinical treatment. Methods Collected 100 cases of neonatal diaper dermatitis from January 2014 to January 2017 in our hospital. The patients were divided into observation group and control group according to the order of admission. After treatment, the observation group was given montmorillonite combined with oxygen therapy, the control group was given only oxygen treatment, compared the treatment effect of the two groups of patients. Results After treatment, the total effective rate of the observation group was 100％, the total effective rate of control group was 80％, there was significant difference between the two groups in the total effective rate of clinical treatment (P<0.05).The cure time was (116.20 ± 25.79) h in the observation group and (145.72 ± 24.88) h in the control group. The difference of the cure time between the two groups was statistically significant (P<0.05). In the observation group, the erythema was found in 42 children after treatment, and the area of erosion was obviously reduced before treatment, and the surface of the lesion was dry. After treatment for 5 days, 36 cases of mild to moderate diaper dermatitis were cured. After 7 days of treatment, children are cured. In the control group, 19 cases of mild diaper dermatitis were treated with erythema dermatitis . After treatment for 5 days, the area of hips in the 22 cases was smaller than that before treatment, and the lesion was dry. After 7 days, There was no significant improvement in erosion and or exudation. Conclusion Montmorillonite powder combined with oxygen treatment of neonatal diaper dermatitis is a significant effect, is the ideal treatment for neonatal diaper dermatitis.

Effect of racecadotril granules combined with montmorillonite on infantile rotavirus enteritis and myocardium enzymogram / 中国生化药物杂志

Objective To investigate the effect of racecadotril granules combined with montmorillonite on infantile rotavirus enteritis and myocardium enzymogram.Methods Retrospective a total of 275 infants and young children with rotavirus enteritis treated in Seventh Hospital of Ningbo from September 2014 to January 2016,were divided into the control group and the combined treatment group according to the treatment method.The combined treatment group were treated with montmorillonite powder and racecadotril granules, the control group were treated with montmorillonite powder.The negative rate of stool were observed three days after treatment,compared the symptom relief time,the level of inflammatory cytokines and myocardial enzyme spectrum between two groups before and after treatment .Results The stool negative rate of combined treatment group ( 79.31%) higher than the control group(67.69%) after three days of treatment;the levels of IL-18,IL-6 and hs-CRP in the combined treatment group were lower than those in the control group(P<0.05);the antiemetic time,dehydration correction time and recovery time of stool were shorter in combination therapy group than those in control group(P<0.05);there was no difference in the levels of myocardial enzyme between the two groups before treatment.The level of CK-MB,LDH,CK and AST in the two groups after treatment were lower than before treatment,and the level of CK and CK-MB in the combined treatment group was lower than the control group ( P<0.05 ) .Conclusion Racecadotril granules combined with montmorillonite powder has a good therapeutic effect on infantile rotavirus enteritis can significantly improve clinical symptoms, reduce the levels of inflammatory cytokines in patients.

Clinical efficacy and safety of saccharomyces boulardii powder combined with montmorillonite powder in treatment of acute diarrhea in children / 中国生化药物杂志

Objective To investigate the clinical efficacy and safety of montmorillonite powder combined with saccharomyces boulardii powder in treatment of acute diarrhea in children.Methods A total of 68 children with acute diarrhea from March 2014 to July 2015 in Lishui People’s Hospital were collected and randomly divided into experiment group and control group, with 34 cases in each group.Patients in control group were treated by montmorillonite on the basis of anti-inflammation, fluid infusion, support and other symptomatic treatment; patients in experiment group were treated saccharomyces boulardii powder combined with montmorillonite powder on the base of clinical routine treatment, the course was 6 days.The stool frequency, diarrhea control time, diarrhea total time and incidence of adverse reactions rate of two groups before and after treatment were observed, and the validity and safety were compared.Results After 6 days treatment, the daily stool frequency of experiment group were significantly lower than control group(P<0.05); diarrhea control time and diarrhea total time of experiment group were significantly lower than control group(P<0.05).The clinical efficacy of experiment group was 91.18%,higher than 73.53%of control group (P<0.05).Conclusion Saccharomyces boulardii powder combined with montmorillonite powder on acute diarrhea in children with good clinical efficacy.

Study on clinical effect of viable bifidobacterium combined with montmorillonite powder in the treatment of infantile diarrhea / 中国基层医药

Objective To study the clinical efficacy of viable bifidobacterium combined with montmorillonite powder in the treatment of infantile diarrhea.Methods 100 patients with infantile diarrhea disease were randomly divided into control group and observation group,50 cases in each group.The control group was given montmorillonitc powder treatment,while the observation group was added viable bifidobacterium treatment based on control group.Effi-cacy,serum C reactive protein (CRP)level,clinical symptom improvement time and adverse reactions rate were com-pared between two groups.Results The total effective rates of clinical treatment in the control group and observation group were 78%(39 /50)and 96%(48 /50)(P1 =0.026).After treatment,the treatment time,diarrhea stopping time,body temperature returned to normal,frequency of defecate recovery time,shape of defecate recovery time and scrum CRP levels in the control group were (8.73 ±1.92)d,(2.32 ±0.85)d,(27.53 ±7.24)h,(2.52 ±0.85)d, (3.62 ±1.23)d and (13.63 ±2.15)mg/L,which in observation group were (6.15 ±1.26)d,(1.53 ±0.62)d, (19.65 ±5.71)h,(1.75 ±0.76)d,(2.56 ±0.85)d and (7.52 ±1.26)mg/L.The observation group were better than the control group (P2 =0.026,P3 =0.018,P4 =0.021,P5 =0.012,P6 =0.031,P10 =0.002).The incidence of adverse reactions between two groups had no obvious difference.Conclusion Viable bifidobacterium combined with montmorillonite powder can effectively treat infantile diarrhea,with advantages of significant clinical efficacy,quickly recovery of clinical symptoms,rapidly reduce of CRP level,and low adverse reactions,it is worthy of promotion.

Effect of lysine hydrochloride and zinc gluconate granules combined with montmorillonite powder and live combined bifidobacterium and lactobacillus granules in infantile diarrhea / 中国生化药物杂志

Objective To evaluate the effect of lysine hydrochloride and zinc gluconate granules combined with montmorillonite powder and live combined bifidobacterium and lactobacillus granules in the treatment of infantile diarrhea.Methods 80 cases of children with infantile diarrhea in our hospital from May 2014 to May 2016 were selected and randomly divided into the combined treatment group ( lysine hydrochloride and zinc gluconate granules combined with montmorillonite powder and live combined bifidobacterium and lactobacillus granules ) , and conventional treatment group ( montmorillonite powder and live combined bifidobacterium and lactobacillus granules ) two groups with 40 cases in each group, the clinical curative effects, adverse reactions, stool frequency recovery normal time, stool normal time, abdominal pain disappeared time, temperature recovery time, vomiting disappeared time of the two groups were statistically analyzed.Results The total treatment effective rate of the combined treatment group 97.5%(39/40) was significantly higher than the conventional treatment group 72.5% (29/40), the difference was statistically significant (P<0.05), the stool frequency recovery normal time, stool normal time, abdominal pain disappeared time, temperature recovery time, vomiting disappeared time were significantly shorter than the conventional treatment group, the difference was statistically significant (P<0.05).Conclusion The effect of lysine hydrochloride and zinc gluconate granules combined with montmorillonite powder and live combined bifidobacterium and lactobacillus granules in the treatment of infantile diarrhea is better than montmorillonite powder and live combined bifidobacterium and lactobacillus granules .

Impacts of mesalazine,clostridium and montmorillonite powder on plasma PG-E2,LT-B4,PAF and VEGF in rats with ulcerative colitis / 中国免疫学杂志

Objective:To investigate the Prostaglandin E2(PG-E2),Leukotrienes B4(LT-B4)、Platelet activating factor(PAF) and vascular endothelial growth factor (VEGF) levels in the model of UC rats serum,and the changes after the Mesalazine,clostridium, and montmorillonite powder treatment intervention ,in order to understand the significance of the four inflammatory factors in UC rats and the interference effect of the above three drugs on the four inflammatory cytokines .Methods:100 rats were randomly divided into normal group(A),model group(B),Mesalazine group(C),clostridium group(D)and montmorillonite group(E),The levels of the plasma PG-E2,LT-B4,PAF and VEGF were measured by ELISA .The different changes of the four cytokines were compared in the different groups.Results:①The scores of DAI and the levels of the plasma PGE2,LTB4,PAF and VEGF in the B,C,D and E group were higher than ones in A group(P<0.05).②Compared B group,the scores of DAI and the levels of plasma PGE2,LT-B4,PAF and VEGF in B,C,D and E group were lower ( P<0.05 ) .③Compared the efficacy among mesalazine , clostridium and montmorillonite powdergot treating UC , mesalazine and montmorillonite powder got the best results ( P<0.05 ) .The efficacy between mesalazine and montmorillonite was similar.Conclusion:①The PGE2,LT-B4,PAF and VEGF are very active higher in the blood of rats with UC and have a positive correlation with inflammation .②Mesalazine, clostridium and montmorillonite powder may renovate the damage of inflammatory tissues of rats with UC , and relieve the symptoms of inflammation , and also shorten the duration of inflammation by reducing exudation of proinflammatory cytokines PGE 2,LTB4,PAF and VEGF.

Determination and evaluation of antacid property of alkaline montmorillonite / 中国药学杂志

OBJECTIVE: To investigate and evaluate the antacid property of alkaline montmorillonite. METHODS: Parameters of the antacid, such as active component content, solubility, and granularity, were determined. The antacid was characterized by BET, XRD, and SEM, and evaluated by acute toxicity test, acid resistance in vitro experiment, and gastric mucosa protection experiment. RESULTS: The content and solubility of the active component Ca(OH)2 were 37% and 84 mg · L-1, respectively, which showed that Ca(OH)2 was relatively firmly loaded and the alkalinity was largely decreased. The granularity and specific area were 8.3 μm and 37.5 m · g-1, respectively, which were beneficial to gastric acid adsorption and gastric mucosa protection. Besides, XRD characterization results revealed the antacid retained a structure of montmorillonite. And SEM patterns indicated the surface of the antacid was relatively smooth, which was conducive to gastric mucosa protection. In addition, the results of acute toxicity test, acid resistance in vitro experiment, and gastric mucosa protection experiment demonstrated that the antacid was safe and non-toxic. Meanwhile, it pocessed excellent properties of acid resistance and gastric mucosa protection. CONCLUSION: Alkaline montmorillonite antacid is an excellent antacid and gastric mucosa protectant.

Impacts of mesalazine, montmorillonite powder, clostridium and on serum cytokine of rats with experimental ulcerative coliti / 中国免疫学杂志

Objective:To establish the model of rats with UC by 2,4,6 trinitrobenzene sulfonic acid ( TNBS)/ethanol to understand the changes of IL-17,IL-23,TGF-β1,IFN-γin pathogenesis of ulcerative colitis (UC) and the impacts of mesalazine,mont-morillonite powder and clostridium on that.Methods:85 rats were divided randomly into 6 groups including the model ,mesalazine, montmorillonite,clostridium,mesalazine combined with montmorillonite powder group (15 rats per group ) and an additional control group of 10 normal rats.TNBS/ethanol was used to establish the model of rats with UC.The dosage of model, mesalazine, montmorillonite powder ,clostridium and mesalazine combined with montmorillonite powder were converted by surface area of rat and given to the rats by gastric-tube daily.All rats were executed at the 12th day of the molding and treatment ,and the blood and colon samples were collected.The content of IL-17,IL-23,TGF-β1,IFN-γwas measured in the blood by the ELISA method.The different changes of the four cytokines were compared separately.Results: ( 1 ) TNBS/ethanol was used to establish the model of rats with UC.The obvious inflammation can be observed on distal colon of rats by pathologic sections of HE stained .(2) The levels of plasma IL-17,IL-23 and IFN-γin the model,mesalazine,montmorillonite,clostridium and mesalazine combined with montmorillonite powder group were higher than ones in the control gruop (P<0.05),meanwhile,the levels of plasma TGF-β1 are lower (P<0.05).3.Comparing with the model group,the levels of plasma IL-17,IL-23 and IFN-γin the mesalazine,montmorillonite,clostridium and mesalazine combined with montmorillonite powder group were lower , and the levels of TGF-β1 were higer.The differences have statistic significative ( P<0.05).(4)Comparing the efficacy of treatment among mesalazine ,montmorillonite powder,clostridium and mesalazine combined with montmorillonite powder ,mesalazine and mesalazine combined with montmorillonite powder gets the best results ( P<0.05 ).The efficacy between montmorillonite powder and clostridium is similar.Conclusion:(1) TNBS/ethanol can be used to establish the model of rats with UC and can be successfully approved by the measurement of symptoms and pathologic investigation .(2)The IL-17,IL-23 and IFN-γare very active higher in the blood of rats with experimental ulcerative colitis induced by TNBS /ethanol, and have a positive correlation with inflammation.The TGF-β1 is in decrease in the blood of rats with colitis , and has a Negative Correlation with inflammation.(3)Mesalazine,montmorillonite powder,clostridium and mesalazine combined with montmorillonite powder may renovate the damage of inflammatory tissues of rats with experimental ulcerative colitis , and relieve the symptom of inflammation by reducing exudation of proinflammatory cytokines IL-17, IL-23 and immune regulatory cytokines IFN-γby producing the exudation of proinflammatory cytokines TGF-β1 to be good for recovery of UC.

Reduning combined with montmorillonite powder for infantile viral enteritis / 国际中医中药杂志

Objective To observe the therapeutic effects of Reduning combined with montmorillonite powder for infantile viral enteritis. Methods A total of 136 patients with infantile viral enteritis in Shanxi Tongchuan Mining Bureau Central Hospital pediatric clinic from August 2010 to October 2013 were selected and divided into two group by random number table method, a Reduning group (65 cases) and a combined treatment group (71 cases). The Reduning group was treated with Reduning injection and the combined treatment group was treated with Reduning injection plus oral montmorillonite powder. The total efficiency, improvement of symptoms and staying hospital time were compared between the two groups. Results The total effective rate in the combined treatment group was significantly higher than that in the Reduning group (97.1% vs. 59.9%, χ2=28.696, P<0.05). The fever clearance time (2.96 ± 1.32 d vs. 3.84 ± 1.94 d; t=2.587, P=0.011), the time to stop diarrhea (3.12 ± 1.44 d vs. 3.95 ± 1.97 d;t=2.340, P=0.022) and staying hospital time (4.60 ± 1.62 d vs. 5.86 ± 2.35 d;t=3.044, P=0.003) in the combined treatment group were all shorter than those in the Reduning group. Conclusions Reduning combined with montmorillonite powder is more effective in the treatment of infantile viral enteritis than Reduning alone, which shortens the course and staying hospital time.