Humans ; Medicine, Chinese Traditional ; Colitis-Associated Neoplasms ; Drugs, Chinese Herbal/adverse effects* ; Colitis/chemically induced* ; Colorectal Neoplasms/drug therapy*

We report a case of a chronic hemodialysis patient who developed hypermagnesemia due to an overdose of magnesium-containing laxative and paralytic ileus resulting in colonic perforation. Despite intravenous calcium infusion and daily hemodialysis, the patient developed ischemic colitis and intestinal perforation. Colonic perforation accompanied with hypermagnesemia in hemodialysis patients has rarely been reported. This case suggests that hypermagnesemia should be considered in renal failure patients as this can result in life-threatening events despite prompt treatment.
Colitis, Ischemic/*chemically induced/diagnosis/surgery ; Constipation/*drug therapy/surgery ; Female ; Humans ; Intestinal Perforation/*chemically induced/surgery ; Laxatives/adverse effects/*poisoning ; Magnesium/*poisoning ; Middle Aged ; *Renal Dialysis

The histopathological features and the associated clinical findings of ulcerative colitis (UC) are due to persistent inflammatory response in the colon mucosa. Interventions that suppress this response benefit UC patients. We tested whether sodium arsenite (SA) benefits rats with dextran sulfate sodium (DSS)-colitis. The DSS-colitis was induced by 5% DSS in drinking water. SA (10 mg/kg; intraperitoneally) was given 8 h before DSS treatment and then every 48 h for 3 cycles of 7, 14 or 21 d. At the end of each cycle rats were sacrificed and colon sections processed for histological examination. DSS induced diarrhea, loose stools, hemoccult positive stools, gross bleeding, loss of body weight, loss of epithelium, crypt damage, depletion of goblet cells and infiltration of inflammatory cells. The severity of these changes increased in the order of Cycles 1, 2 and 3. Treatment of rats with SA significantly reduced this severity and improved the weight gain.
Animals ; Arsenites ; pharmacology ; Body Weight ; Colitis ; chemically induced ; drug therapy ; Colitis, Ulcerative ; chemically induced ; Colon ; pathology ; Dextran Sulfate ; pharmacology ; Epithelium ; pathology ; Inflammation ; Male ; Models, Biological ; Rats ; Rats, Wistar ; Sodium Compounds ; pharmacology ; Time Factors ; Treatment Outcome

BACKGROUND/AIMS: Saccharomyces boulardii has been reported to be beneficial in the treatment of inflammatory bowel disease. The aim of this work was to evaluate the effect of S. boulardii in a mice model of 2,4,6-trinitrobencene sulfonic acid (TNBS) induced colitis and analyze the expression of genes in S. boulardii treated mice by microarray. METHODS: BALB/c mice received TNBS or TNBS and S. boulardii treatment for 4 days. Microarray was performed on total mRNA form colon, and histologic evaluation was also performed. RESULTS: In mice treated with S. boulardii, the histological appearance and mortality rate were significantly restored compared with rats receiving only TNBS. Among 330 genes which were altered by both S. boulardii and TNBS (>2 folds), 193 genes were down-regulated by S. boulardii in microarray. Most of genes which were down-regulated by S. bouardii were functionally classified as inflammatory and immune response related genes. CONCLUSIONS: S. boulardii may reduce colonic inflammation along with regulation of inflammatory and immune responsive genes in TNBS-induced colitis.
Animals ; Colitis/chemically induced/genetics/*therapy ; Colon/metabolism/pathology ; Gene Expression Profiling ; Mice ; Mice, Inbred BALB C ; Oligonucleotide Array Sequence Analysis ; *Probiotics ; *Saccharomyces ; Trinitrobenzenesulfonic Acid

AIMTo investigate the effects of glutamine on the colonic mucosa of mice subjected to colitis gravis.

METHODS64 Kunming mice were divided randomly into 4 groups (n=16): healthy group: animals not subjected to colitis; model group: animals subjected to colitis gravis but without glutamine supplementation; low-Gln group: animals subjected to colitis gravis and with low dose of glutamine supplementation; high-Gln group: animals subjected to colitis gravis and with high dose of glutamine supplementation. Animals belonging to the control, the low-Gln, the high-Gin groups were subjected to coloclysis by HAC to be colitis gravis animals. When the models were established, the healthy and the control groups were given some isotonic Na chloride by intragastric administration. The low-Gln group and the high-Gln group were given the same volume but different concentration of glutamine(low-Gln group--2 mmol x Kg(-1) bw, high-Gln group--2 mmol x Kg(-1) bw) for 7 days. Then the mice were sacrificed, the pathohistological changes of the colon were observed, besides, the content of endotoxin in the blood serum, the level of counteracting oxidation and the activities of MPO of the colon tissue were determined.

RESULTSThe glutamine lessened the pathological injures in the colon and relieved the step up of the content of endotoxin in the blood serum , the step down level of counteracting oxidation and the step up activity of MPO in the colon tissue, which were caused by colitis gravis.

CONCLUSIONThe glutamine can protect the colon of mice subjected to colitis gravis.

Acetic Acid ; Animals ; Colitis, Ulcerative ; chemically induced ; drug therapy ; pathology ; Colon ; pathology ; Female ; Glutamine ; pharmacology ; therapeutic use ; Male ; Mice ; Random Allocation

OBJECTIVETo prepare the diammonium glycyrrhizinate-loaded chitosan nanoparticles (DG-CS NPs), and evaluate its pharmaceutical properties and pharmacodynamic effects on ulcerative colitis (UC).

METHODDG-CS NPs were prepared by spray drying method and optimized by orthogonal design. The morphology, size and in vitro release of DG-CS NPs were investigated. The therapeutic effects of DG-CS NPs on UC mice induced by dextran sulfate were evaluated preliminarily through disease active index method.

RESULTThe size of DG-CS NPs with loading capacity about (51.25 +/- 1.75)% was in the range of 300-600 nm. The release of DG-CS NPs was associated with environmental pH value and displayed significant therapeutic and preventive effects on UC.

CONCLUSIONDG-CS NPs prepared by spray drying method showed efficacy on UC mice.

Animals ; Chitosan ; chemistry ; Colitis, Ulcerative ; chemically induced ; drug therapy ; Dextran Sulfate ; toxicity ; Disease Models, Animal ; Female ; Glycyrrhizic Acid ; chemistry ; therapeutic use ; Male ; Mice ; Nanoparticles ; chemistry

Hydrogen peroxide is commonly used as a disinfectant that has been reported to cause chemical colitis. We report a case of 49 year-old man who presented with chemical colitis caused by self-inflicted hydrogen peroxide enema. In the sigmoidoscopic examination, diffuse erythematous and edematous mucosal change with multiple ulcerations and easy touch bleeding was noted from the rectum to the proximal sigmoid colon. Abdominal computed tomography showed diffuse wall thickening of the rectum and the sigmoid colon with inflammatory and reactive change at surrounding. The patient was treated with NPO, intravenous fluid, and antibiotic therapy. On 5th hospital day, abdominal pain and bloody stool disappeared, and the patient started oral feeding. He discharged on 6th hospital day with fully recovered state.
Abdominal Pain/etiology ; Colitis/*chemically induced/therapy ; Enema/*adverse effects ; Gastrointestinal Hemorrhage/etiology ; Humans ; Hydrogen Peroxide/*adverse effects ; Male ; Middle Aged ; Sigmoidoscopy ; Tomography, X-Ray Computed

This study aims to explore the effect of tryptanthrin on potential metabolic biomarkers in the serum of mice with ulcerative colitis(UC) induced by dextran sulfate sodium(DSS) based on liquid chromatography-mass spectrometry(LC-MS) and predict the related metabolic pathways. C57BL/6 mice were randomly assigned into a tryptanthrin group, a sulfasalazine group, a control group, and a model group. The mouse model of UC was established by free drinking of 3% DSS solution for 11 days, and corresponding drugs were adminsitrated at the same time. The signs of mice were observed and the disease activity index(DAI) score was recorded from the first day. Colon tissue samples were collected after the experiment and observed by hematoxylin-eosin(HE) staining. The levels of interleukin-4(IL-4), interleukin-10(IL-10), tumor necrosis factor-α(TNF-α), interleukin-6(IL-6), and interleukin-8(IL-8) in the serum were measured by enzyme linked immunosorbent assay(ELISA). The serum samples were collected from 6 mice in each group for widely targeted metabolomics. The metabolic pathways were enriched by MetaboAnalyst 5.0. The results showed that compared with the model group, tryptanthrin treatment decreased the DAI score(P<0.05), alleviated the injury of the colon tissue and the infiltration of inflammatory cells, lowered the levels of proinflammatory cytokines, and elevated the levels of anti-inflammatory cytokines in the serum. The metabolomic analysis revealed 28 differential metabolites which were involved in 3 metabolic pathways including purine metabolism, arachidonic acid metabolism, and tryptophan metabolism. Tryptanthrin may restore the metabolism of the mice with UC induced by DSS to the normal level by regulating the purine metabolism, arachidonic acid metabolism, and tryptophan metabolism. This study employed metabolomics to analyze the mechanism of tryptanthrin in the treatment of UC, providing an experimental basis for the utilization and development of tryptanthrin.
Mice ; Animals ; Colitis, Ulcerative/drug therapy* ; Tryptophan ; Arachidonic Acid/metabolism* ; Mice, Inbred C57BL ; Colon ; Cytokines/metabolism* ; Tumor Necrosis Factor-alpha/metabolism* ; Interleukin-6/metabolism* ; Metabolomics ; Purines/therapeutic use* ; Dextran Sulfate/metabolism* ; Disease Models, Animal ; Colitis/chemically induced*

Ulcerative colitis(UC) is a recurrent, intractable inflammatory bowel disease. Coptidis Rhizoma and Bovis Calculus, serving as heat-clearing and toxin-removing drugs, have long been used in the treatment of UC. Berberine(BBR) and ursodeoxycholic acid(UDCA), the main active components of Coptidis Rhizoma and Bovis Calculus, respectively, were employed to obtain UDCA-BBR supramolecular nanoparticles by stimulated co-decocting process for enhancing the therapeutic effect on UC. As revealed by the characterization of supramolecular nanoparticles by field emission scanning electron microscopy(FE-SEM) and dynamic light scattering(DLS), the supramolecular nanoparticles were tetrahedral nanoparticles with an average particle size of 180 nm. The molecular structure was described by ultraviolet spectroscopy, fluorescence spectroscopy, infrared spectroscopy, high-resolution mass spectrometry, and hydrogen-nuclear magnetic resonance(H-NMR) spectroscopy. The results showed that the formation of the supramolecular nano-particle was attributed to the mutual electrostatic attraction and hydrophobic interaction between BBR and UDCA. Additionally, supramolecular nanoparticles were also characterized by sustained release and pH sensitivity. The acute UC model was induced by dextran sulfate sodium(DSS) in mice. It was found that supramolecular nanoparticles could effectively improve body mass reduction and colon shortening in mice with UC(P<0.001) and decrease disease activity index(DAI)(P<0.01). There were statistically significant differences between the supramolecular nanoparticles group and the mechanical mixture group(P<0.001, P<0.05). Enzyme-linked immunosorbent assay(ELISA) was used to detect the serum levels of tumor necrosis factor-α(TNF-α) and interleukin-6(IL-6), and the results showed that supramolecular nanoparticles could reduce serum TNF-α and IL-6 levels(P<0.001) and exhibited an obvious difference with the mechanical mixture group(P<0.01, P<0.05). Flow cytometry indicated that supramolecular nanoparticles could reduce the recruitment of neutrophils in the lamina propria of the colon(P<0.05), which was significantly different from the mechanical mixture group(P<0.05). These findings suggested that as compared with the mechanical mixture, the supramolecular nanoparticles could effectively improve the symptoms of acute UC in mice. The study provides a new research idea for the poor absorption of small molecules and the unsatisfactory therapeutic effect of traditional Chinese medicine and lays a foundation for the research on the nano-drug delivery system of traditional Chinese medicine.
Animals ; Mice ; Colitis, Ulcerative/drug therapy* ; Ursodeoxycholic Acid/adverse effects* ; Berberine/pharmacology* ; Interleukin-6 ; Tumor Necrosis Factor-alpha/pharmacology* ; Drugs, Chinese Herbal/pharmacology* ; Colon ; Nanoparticles ; Dextran Sulfate/adverse effects* ; Disease Models, Animal ; Colitis/chemically induced*

Platycodon grandiflorus polysaccharide (PGP) is one of the main components of P. grandiflorus, but the mechanism of its anti-inflammatory effect has not been fully elucidated. The aim of this study was to evaluate the therapeutic effect of PGP on mice with dextran sodium sulfate (DSS)-induced ulcerative colitis (UC) and explore the underlying mechanisms. The results showed that PGP treatment inhibited the weight loss of DSS-induced UC mice, increased colon length, and reduced DAI, spleen index, and pathological damage within the colon. PGP also reduced the levels of pro-inflammatory cytokines and inhibited the enhancement of oxidative stress and MPO activity. Meanwhile, PGP restored the levels of Th1, Th2, Th17, and Treg cell-related cytokines and transcription factors in the colon to regulate colonic immunity. Further studies revealed that PGP regulated the balance of colonic immune cells through mesenteric lymphatic circulation. Taken together, PGP exerts anti-inflammatory and anti-oxidant effect and regulates colonic immunity to attenuate DSS-induced UC through mesenteric lymphatic circulation.
Animals ; Mice ; Colitis, Ulcerative/drug therapy* ; Platycodon ; Colon/pathology* ; Cytokines ; Anti-Inflammatory Agents/therapeutic use* ; Polysaccharides/therapeutic use* ; Dextran Sulfate ; Disease Models, Animal ; Colitis/chemically induced* ; Mice, Inbred C57BL