AIM: It has been noticed that gastroenteritis or dysentery plays a role in pathogenesis of irritable bowel syndrome (IBS), and antibiotics can increase functional abdominal symptoms, both of which may be partly due to...AIM: It has been noticed that gastroenteritis or dysentery plays a role in pathogenesis of irritable bowel syndrome (IBS), and antibiotics can increase functional abdominal symptoms, both of which may be partly due to intestinal flora disorders. This study was to determine the change of gut flora of IBS, a cluster of abdominal symptoms. Because of the chronic course and frequent occurrence of the disease, IBS patients suffered much from it. So the quality of life (Qol) of IBS patients was also evaluated in this study. METHODS: Twenty-five Rome II criteria-positive IBS patients were recruited, and 25 age and gender-matched healthy volunteers were accepted as control. The fecal flora, including Lactobacillus, Bifidobacterium, Bacteroides, C. perfringens Enterobacteriacea and Enterococus, were analyzed quantitatively and qualitatively. We also calculated the ratio of BitZdobacterium to Enterobacteriaceae ( B/E ratio) in both IBS patients and controls. In both groups, the data were further analyzed based on age difference, and comparisons were made between the younger and elder subgroups. We also evaluated the quality of life (QoL) of IBS patients and the control group using the Chinese version of SF-36 health questionnaire. RESULTS: In IBS patients, the number of fecal Bifidobacterium was significantly decreased and that of Enterobacteriaceae was significantly increased compared with that in healthy controls (both P<0.05).The mean microbial colonization resistance (CR) of the bowel in IBS patients was smaller than 1, making a significant difference compared with that in control which was more than 1 (P<0.01). There was no significant difference in gut flora between two subgroups. While in control, the elder subgroup presented more Enterobactenacea than the younger one (P<0.05). Compared with the control group, IBS patients had significantly lower scores on all SF-36 scales, with the exception of physical functioning. However, there was no significant correlation between quality of life and enteric symptoms in IBS pa展开更多
AIM: To investigate the pattern of symptoms, predominant bowel habits and quality of life (QOL) by the Chinese version of the SF-36 in irritable bowel syndrome (IBS) consulters in Zhejiang province. METHODS: From Janu...AIM: To investigate the pattern of symptoms, predominant bowel habits and quality of life (QOL) by the Chinese version of the SF-36 in irritable bowel syndrome (IBS) consulters in Zhejiang province. METHODS: From January 2001 to January 2002, 662 Roma Ⅱ criteria-positive IBS patients were enrolled by gastroenterologists in 10 hospitals from Digestive Disease Center of Zhejiang (DDCZ). Patients were classified into constipation predominant IBS (IBS-C), diarrhea predominant IBS (IBS-D) and alternating constipation and diarrhea IBS (IBS-A) according to the predominant bowel habits. All patients were evaluated for the demographic checklists, IBS bowel symptoms, extra-colonic symptoms, and QOL by Chinese version of the SF-36 questionnaire. RESULTS: (1) Besides abdominal pain, the predominant colonic symptoms were in order of altered stool form, abnormalities of stool passage, abdominal distension and passage of mucus in IBS patients. Also, IBS subjects reported generalized body discomfort and psychosocial problems including dyspeptic symptoms, poor appetite, heartburn, headache, back pain, difficulty with urination, fatigue, anxiety and depression. (2) IBS-C and IBS-A are more common among female patients, whereas male patients experienced more cases of IBS-D. In regards to the IBS symptoms, there were significant differences among IBS subgroups. Abdominal pain (frequency ≥2 days per week and duration ≥1 hour per day) was frequent in IBS-A patients (P=0.010 and 0.027, respectively), IBS-D patients more frequently experienced the passage of mucus, dyspeptic symptoms and anxiety (P=0.000, 0.014 and 0.015, respectively). (3) IBS patients experienced significant impairment in QOL, decrements in QOL were most pronounced in vitality, general health, mental health, and bodily pain. Compared with the general population (adjusted for gender and age), IBS patients scored significantly lower on all SF-scales (P<0.001), except for physical function scale (P=0.149). (4) QOL was impaired in all subgroups, particularly in scal展开更多
AIM: To establish an experimental animal model of chronic gastritis in a short term and to investigate the effects of several potential inflammation-inducing factors on rat gastric mucosa.METHODS: Twenty-four healthy,...AIM: To establish an experimental animal model of chronic gastritis in a short term and to investigate the effects of several potential inflammation-inducing factors on rat gastric mucosa.METHODS: Twenty-four healthy, male SD rats were treated with intragastric administration of 600 mL/L alcohol, 20 mmol/L sodium deoxycholate and 0.5 g/L ammonia (factor A), forage containing low levels of vitamins (factor B), and/or indomethacin (factor C), according to an L8(2^7) orthogonal design. After 12 wk, gastric antral and body mucosae were pathologically examined.RESULTS: Chronic gastritis model was successfully induced in rats treated with factor A for 12 wk. After the treatment of animals, the gastric mucosal inflammation was significantly different from that in controls, and the number of pyloric glands at antrum and parietal cells at body were obviously reduced (P<0.01). Indomethacin induced gastritis but without atrophy, and short-term vitamin deficiency failed to induce chronic gastritis and gastric atrophy. In addition, indomethacin and vitamin deficiency had no synergistic effect in inducing gastritis with the factor A. No atypical hyperplasia and intestinal metaplasia in the gastric antrum and body were observed in all rats studied.CONCLUSION: Combined intragastric administration of 600 mL/L alcohol, 20 mmol/L sodium deoxycholate and 0.5 g/L ammonia induces chronic gastritis and gastric atrophy in rats. Indomethacin induces chronic gastritis only. The long-term roles of these factors in gastric inflammation and carcinogenesis need to be further elucidated.展开更多
AIM: To investigate the growth hormone (GH) and growthhormone receptor (GHR) expression of and its clinicalsignificance in patients with chronic atrophic gastritis (CAG).METHODS: A total of 90 cases were enrolled in t...AIM: To investigate the growth hormone (GH) and growthhormone receptor (GHR) expression of and its clinicalsignificance in patients with chronic atrophic gastritis (CAG).METHODS: A total of 90 cases were enrolled in the study.Thirty were healthy controls, the other 60 patients weredivided into two groups according to the endoscopical andhistological diagnosis. Blood samples were drawn in themorning (menarche did not occur during the bloodextraction in female patients), gastric mucosa was obtainedby endoscopy. Serum GH and gastrice mucosal GHR levelswere measured using radioimmunoassay (RIA) and EnVinsion technique.RESULTS: The average GH level was 1.021*0.132 pg/L inCAG patients, in controls it was 2.869+_0.512 )~g/L. Therewas a significant difference between these two groups(P<0.01). The positive rate of GHR in CAG patients was10%, in controls the rate was 100%. There was asignificant difference (P<0.01). There was no significantchange of GH level (3.176+0.421 ~tg/L) in patients withgastric carcinoma compared with controls (P>0.05).CONCLUSION: The study shows that levels of GH andGHR expression are low in CAG patients. CAG pathogenesishas a correlation with mucosal nutrient deficiency,decreased levels of GH and GHR have an adverse effect onthe repair and regeneration of CAG. There is no significantchange of GH in gastric carcinorma patients, GH dose notplay a role in the pathogenesis of gastric cancer.展开更多
AIM: To develop an efficient animal colitis-associated carcinogenesis model and to detect the expression of β-catenin and p53 in this new model. METHODS: Dysplasia and cancer were investigated in mice pretreated with...AIM: To develop an efficient animal colitis-associated carcinogenesis model and to detect the expression of β-catenin and p53 in this new model. METHODS: Dysplasia and cancer were investigated in mice pretreated with a single intraperitoneal injection of 20 mg/kg body mass of 1,2-dimethylhydrazine prior to three repetitive oral administrations of 30 g/L dextran sulfate sodium to give conditions similar to the clinically observed active and remission phases. Immunohistochemical staining of β-catenin and p53 was performed on paraffin-imbedded specimens of animals with cancer and/or dysplasia, those without dysplasia and the normal control animals. RESULTS: At wk 11, four early-invasive adenocarcinomas and 36 dysplasia were found in 10 (90.9%) of the 11 mice that underwent 1,2-dimethylhydrazine-pretreatment with 3 cycles of 30 g/L dextran sulfate sodium-exposure. Dysplasia and/or cancer occurred as flat lesions or as dysplasia-associated lesion or mass (DALM) as observed in humans. Colorectal carcinogenesis occurred primarily on the distal portion of the large intestine. No dysplasia and/or cancer lesion was observed in the control groups with 1,2-dimethylhydrazine pretreatment or 3 cycles of 30 g/L dextran sulfate sodium exposure alone. Immunohistochemical investigation revealed that β-catenin was translocated from cell membrane to cytoplasm and/or nucleus in 100% of cases with dysplasia and neoplasm, while normal membrane staining was observed in cases without dysplasia and the normal control animals. Nuclear expression of p53 was not detected in specimens. CONCLUSION: A single dose of procarcinogen followed by induction of chronic ulcerative colitis results in a high incidence of colorectal dysplasia and cancer. Abnormalexpression of β-catenin occurs frequently in dysplasia and cancer. This novel mouse model may provide an excellent vehicle for studying colitis-related colon carcinogenesis.展开更多
AIM: To evaluate the quality of gastric ulcer healing after different antiulcer treatment by endoscopic ultrasonography(EUS).METHODS: The patients were divided into three groups, and received lansoprazole, amoxicillin...AIM: To evaluate the quality of gastric ulcer healing after different antiulcer treatment by endoscopic ultrasonography(EUS).METHODS: The patients were divided into three groups, and received lansoprazole, amoxicillin and clarithromycinfor 1 wk. Then group A took lansoprazole combined with tepreton for 5 wk, group B took lansoprazole and group C took tepreton for 5 wk. Endoscopy and EUS were performed before and 6 wk after medication. RESULTS: There was no significant difference in cumulative healing rate to S stage between the groups (89%, 82%vs83%,P＞0.05). The rate of white scar formation was significantly higher in group A than in groups B and C (67%, 36%, 50%, P＜0.05). The average contraction rates of the width of ulcer crater, length of disrupted muscularis propria layer and hypoechoic area were higher in groupA than in groups B and C (0.792±0.090, 0.660±0.105 vs0.668±0.143, P＜0.05). The hypoechoic area disappeared in four cases of group A, one of group B and two of group C. The percentage of hypoechoic area disappearance was higher in group A than in the other two groups (44%, 9%vs 17%, P＜0.05). Gastric ulcer healing was better ingroup A.CONCLUSION: The combined administration of proton pump inhibitors and mucosal protective agent can improve gastric ulcer healing.展开更多
基金Supported by Shanghai Sine Pharmaceutical.Co.,Ltd.and Wenzhou Science and Technology Bureau,Zhejiang Province,China
文摘AIM: It has been noticed that gastroenteritis or dysentery plays a role in pathogenesis of irritable bowel syndrome (IBS), and antibiotics can increase functional abdominal symptoms, both of which may be partly due to intestinal flora disorders. This study was to determine the change of gut flora of IBS, a cluster of abdominal symptoms. Because of the chronic course and frequent occurrence of the disease, IBS patients suffered much from it. So the quality of life (Qol) of IBS patients was also evaluated in this study. METHODS: Twenty-five Rome II criteria-positive IBS patients were recruited, and 25 age and gender-matched healthy volunteers were accepted as control. The fecal flora, including Lactobacillus, Bifidobacterium, Bacteroides, C. perfringens Enterobacteriacea and Enterococus, were analyzed quantitatively and qualitatively. We also calculated the ratio of BitZdobacterium to Enterobacteriaceae ( B/E ratio) in both IBS patients and controls. In both groups, the data were further analyzed based on age difference, and comparisons were made between the younger and elder subgroups. We also evaluated the quality of life (QoL) of IBS patients and the control group using the Chinese version of SF-36 health questionnaire. RESULTS: In IBS patients, the number of fecal Bifidobacterium was significantly decreased and that of Enterobacteriaceae was significantly increased compared with that in healthy controls (both P<0.05).The mean microbial colonization resistance (CR) of the bowel in IBS patients was smaller than 1, making a significant difference compared with that in control which was more than 1 (P<0.01). There was no significant difference in gut flora between two subgroups. While in control, the elder subgroup presented more Enterobactenacea than the younger one (P<0.05). Compared with the control group, IBS patients had significantly lower scores on all SF-36 scales, with the exception of physical functioning. However, there was no significant correlation between quality of life and enteric symptoms in IBS pa
文摘AIM: To investigate the pattern of symptoms, predominant bowel habits and quality of life (QOL) by the Chinese version of the SF-36 in irritable bowel syndrome (IBS) consulters in Zhejiang province. METHODS: From January 2001 to January 2002, 662 Roma Ⅱ criteria-positive IBS patients were enrolled by gastroenterologists in 10 hospitals from Digestive Disease Center of Zhejiang (DDCZ). Patients were classified into constipation predominant IBS (IBS-C), diarrhea predominant IBS (IBS-D) and alternating constipation and diarrhea IBS (IBS-A) according to the predominant bowel habits. All patients were evaluated for the demographic checklists, IBS bowel symptoms, extra-colonic symptoms, and QOL by Chinese version of the SF-36 questionnaire. RESULTS: (1) Besides abdominal pain, the predominant colonic symptoms were in order of altered stool form, abnormalities of stool passage, abdominal distension and passage of mucus in IBS patients. Also, IBS subjects reported generalized body discomfort and psychosocial problems including dyspeptic symptoms, poor appetite, heartburn, headache, back pain, difficulty with urination, fatigue, anxiety and depression. (2) IBS-C and IBS-A are more common among female patients, whereas male patients experienced more cases of IBS-D. In regards to the IBS symptoms, there were significant differences among IBS subgroups. Abdominal pain (frequency ≥2 days per week and duration ≥1 hour per day) was frequent in IBS-A patients (P=0.010 and 0.027, respectively), IBS-D patients more frequently experienced the passage of mucus, dyspeptic symptoms and anxiety (P=0.000, 0.014 and 0.015, respectively). (3) IBS patients experienced significant impairment in QOL, decrements in QOL were most pronounced in vitality, general health, mental health, and bodily pain. Compared with the general population (adjusted for gender and age), IBS patients scored significantly lower on all SF-scales (P<0.001), except for physical function scale (P=0.149). (4) QOL was impaired in all subgroups, particularly in scal
文摘AIM: To establish an experimental animal model of chronic gastritis in a short term and to investigate the effects of several potential inflammation-inducing factors on rat gastric mucosa.METHODS: Twenty-four healthy, male SD rats were treated with intragastric administration of 600 mL/L alcohol, 20 mmol/L sodium deoxycholate and 0.5 g/L ammonia (factor A), forage containing low levels of vitamins (factor B), and/or indomethacin (factor C), according to an L8(2^7) orthogonal design. After 12 wk, gastric antral and body mucosae were pathologically examined.RESULTS: Chronic gastritis model was successfully induced in rats treated with factor A for 12 wk. After the treatment of animals, the gastric mucosal inflammation was significantly different from that in controls, and the number of pyloric glands at antrum and parietal cells at body were obviously reduced (P<0.01). Indomethacin induced gastritis but without atrophy, and short-term vitamin deficiency failed to induce chronic gastritis and gastric atrophy. In addition, indomethacin and vitamin deficiency had no synergistic effect in inducing gastritis with the factor A. No atypical hyperplasia and intestinal metaplasia in the gastric antrum and body were observed in all rats studied.CONCLUSION: Combined intragastric administration of 600 mL/L alcohol, 20 mmol/L sodium deoxycholate and 0.5 g/L ammonia induces chronic gastritis and gastric atrophy in rats. Indomethacin induces chronic gastritis only. The long-term roles of these factors in gastric inflammation and carcinogenesis need to be further elucidated.
文摘AIM: To investigate the growth hormone (GH) and growthhormone receptor (GHR) expression of and its clinicalsignificance in patients with chronic atrophic gastritis (CAG).METHODS: A total of 90 cases were enrolled in the study.Thirty were healthy controls, the other 60 patients weredivided into two groups according to the endoscopical andhistological diagnosis. Blood samples were drawn in themorning (menarche did not occur during the bloodextraction in female patients), gastric mucosa was obtainedby endoscopy. Serum GH and gastrice mucosal GHR levelswere measured using radioimmunoassay (RIA) and EnVinsion technique.RESULTS: The average GH level was 1.021*0.132 pg/L inCAG patients, in controls it was 2.869+_0.512 )~g/L. Therewas a significant difference between these two groups(P<0.01). The positive rate of GHR in CAG patients was10%, in controls the rate was 100%. There was asignificant difference (P<0.01). There was no significantchange of GH level (3.176+0.421 ~tg/L) in patients withgastric carcinoma compared with controls (P>0.05).CONCLUSION: The study shows that levels of GH andGHR expression are low in CAG patients. CAG pathogenesishas a correlation with mucosal nutrient deficiency,decreased levels of GH and GHR have an adverse effect onthe repair and regeneration of CAG. There is no significantchange of GH in gastric carcinorma patients, GH dose notplay a role in the pathogenesis of gastric cancer.
文摘AIM: To develop an efficient animal colitis-associated carcinogenesis model and to detect the expression of β-catenin and p53 in this new model. METHODS: Dysplasia and cancer were investigated in mice pretreated with a single intraperitoneal injection of 20 mg/kg body mass of 1,2-dimethylhydrazine prior to three repetitive oral administrations of 30 g/L dextran sulfate sodium to give conditions similar to the clinically observed active and remission phases. Immunohistochemical staining of β-catenin and p53 was performed on paraffin-imbedded specimens of animals with cancer and/or dysplasia, those without dysplasia and the normal control animals. RESULTS: At wk 11, four early-invasive adenocarcinomas and 36 dysplasia were found in 10 (90.9%) of the 11 mice that underwent 1,2-dimethylhydrazine-pretreatment with 3 cycles of 30 g/L dextran sulfate sodium-exposure. Dysplasia and/or cancer occurred as flat lesions or as dysplasia-associated lesion or mass (DALM) as observed in humans. Colorectal carcinogenesis occurred primarily on the distal portion of the large intestine. No dysplasia and/or cancer lesion was observed in the control groups with 1,2-dimethylhydrazine pretreatment or 3 cycles of 30 g/L dextran sulfate sodium exposure alone. Immunohistochemical investigation revealed that β-catenin was translocated from cell membrane to cytoplasm and/or nucleus in 100% of cases with dysplasia and neoplasm, while normal membrane staining was observed in cases without dysplasia and the normal control animals. Nuclear expression of p53 was not detected in specimens. CONCLUSION: A single dose of procarcinogen followed by induction of chronic ulcerative colitis results in a high incidence of colorectal dysplasia and cancer. Abnormalexpression of β-catenin occurs frequently in dysplasia and cancer. This novel mouse model may provide an excellent vehicle for studying colitis-related colon carcinogenesis.
基金Supported by the Grant from the Eisai Human Health Care Company
文摘AIM: To evaluate the quality of gastric ulcer healing after different antiulcer treatment by endoscopic ultrasonography(EUS).METHODS: The patients were divided into three groups, and received lansoprazole, amoxicillin and clarithromycinfor 1 wk. Then group A took lansoprazole combined with tepreton for 5 wk, group B took lansoprazole and group C took tepreton for 5 wk. Endoscopy and EUS were performed before and 6 wk after medication. RESULTS: There was no significant difference in cumulative healing rate to S stage between the groups (89%, 82%vs83%,P＞0.05). The rate of white scar formation was significantly higher in group A than in groups B and C (67%, 36%, 50%, P＜0.05). The average contraction rates of the width of ulcer crater, length of disrupted muscularis propria layer and hypoechoic area were higher in groupA than in groups B and C (0.792±0.090, 0.660±0.105 vs0.668±0.143, P＜0.05). The hypoechoic area disappeared in four cases of group A, one of group B and two of group C. The percentage of hypoechoic area disappearance was higher in group A than in the other two groups (44%, 9%vs 17%, P＜0.05). Gastric ulcer healing was better ingroup A.CONCLUSION: The combined administration of proton pump inhibitors and mucosal protective agent can improve gastric ulcer healing.
