Inflammatory Bowel Disease In China Research Articles

The prevalence of Helicobacter pylori infection in inflammatory bowel disease in China: A case-control study.

Background & aimsHelicobacter pylori (H. pylori) infection remains high in China though the incidence of inflammatory bowel disease (IBD) has increased. Our aim was to investigate the relationship between the prevalence of H. pylori and inflammatory bowel disease.MethodsHospitalized IBD patients including Crohn’s disease (CD) and ulcerative colitis (UC) who had tested H. pylori antibody were enrolled. Controls were chose from age- and sex- matched healthy physical examination people who had H. pylori antibody test in a 1:2 fashion (IBD patients:controls). IBD medical history was recorded. All patients were typed by the Montreal classification. Mayo Clinic score and the Harvey-Bradshaw Severity Index were used to evaluate their disease activity. Patients and controls that had H. pylori eradication therapy before were excluded.ResultsTwo hundred and sixty IBD patients including 213 CD patients and 47 UC patients, and 520 controls were involved in this study. The prevalence of H. pylori infection in IBD patients (9.6%, 25/260) and IBD newly diagnosed patients (12.1%, 8/66), as well as CD patients (8.9%, 19/213) including CD newly diagnosed patients (10.6%, 5/47) and UC patients (12.8%, 6/47) was significantly lower than controls (29.8%, 155/520) (p = 2.796*10−10, 0.007, 5.723*10−9, 0.016, 0.014), while there was no statistically difference between UC newly diagnosed patients and the controls, and IBD patients with different disease type, disease activity and treatment history.ConclusionsH. pylori infection had a negative association with IBD, especially CD.

Incidence and risk factors for venous thrombosis among patients with inflammatory bowel disease in China: a multicenter retrospective study.

Background/AimsRisk of venous thrombosis is increased in patients with inflammatory bowel disease (IBD); data on Asian IBD patients is limited and status quo of thrombosis screening and prophylaxis are unknown. Therefore, we aimed to investigate the incidence, screening, prophylaxis, and risk factors for venous thrombosis among Asian IBD patients.MethodsMedical files of patients with Crohn’s disease (CD) and ulcerative colitis (UC) from 17 hospitals across China between 2011 and 2016 were reviewed for venous thrombosis, use of screening and prophylaxis. A case-control study was performed among hospitalized patients with venous thrombosis and their age-, sex-matched IBD controls hospitalized around the same period; disease characteristics and known provoking factors of venous thrombosis were recorded. Risk factors were analyzed in both univariate and logistic regression analyses.ResultsA total of 8,459 IBD patients were followed for 12,373 person-year. Forty-six patients (0.54%) had venous thrombosis, yielding an incidence of 37.18 per 10,000 person-year. Incidence increased with age, especially among CD. Less than 20% of patients received screening tests and 35 patients (0.41%) received prophylaxis. Severe disease flare was an independent risk factor for venous thrombosis (odds ratio [95% confidence interval]: CD, 9.342 [1.813– 48.137]; UC, 5.198 [1.268–21.305]); past use of steroids and extensive involvement were 2 additional risk factors in CD and UC, respectively.ConclusionsIncidence of venous thrombosis in China was 37.18 per 10,000 person-year (0.54%). Use of screening and prophylaxis were rare. Severe disease flare was an independent risk factor for thrombosis among hospitalized patients.

Disease burden of inflammatory bowel disease in China from 1990 to 2017: Findings from the global burden of diseases 2017.

BackgroundA comprehensive evaluation of the burden of inflammation bowel disease (IBD) is important for identifying potential strategies to control the disease. We present results from the Global Burden of Diseases (GBD) 2017 of IBD at the national level, the trends in disease burden and its epidemiological features in China.MethodsUsing the methods and results from GBD 2017, we describe the IBD burden based on the prevalence, incidence, mortality, years of lost (YLLs), the years of life lived with disability (YLDs) and disability-adjusted life years (DALYs) in China estimated using DisMod-MR 2·1. We additionally evaluated the rate of DALYs at national locations in 2017.FindingsFrom 1990 to 2017, the cases, deaths, YLLs, YLDs and DALYs for IBD in China were from 1,047,991 to 2,665,081, from 5701 to 5198, from 188,814 to 107,373, from 157,581 to 394,887, from 346,396 to 502,260, respectively. Increasing trends were observed in prevalence (APC: 2·9%), incidence (APC: 1·1%), DALYs (APC: 0·8%) and YLDs (APC:2·9%). There were decreasing trends in mortality (APC: -1·0%) and YLLs (APC: -2·7%). As to the age-standardized rates of DALYs, it observed a decreasing trend (APC: -0·78%). Similar trends were observed in men and women. The age-standardized APCs in incidence, mortality and rate of YLLs among women were higher than those among men. The age-standardized rate of DALYs was 27·51 per 100,000 in 2017.InterpretationBetween 1990 and 2017, China experienced a decrease in the age-standardized DALYs, mortality rates and YLLs due to IBD, despite an increase in the age-standardized rate of prevalence, incidence and YLDs. China is still one of the low endemic areas.FundingThis work had no supporting funding.

Experiences of Body Image Changes in Chinese Patients Living with Inflammatory Bowel Disease: A Descriptive Qualitative Study

PurposeBody image changes are common among patients living with inflammatory bowel disease (IBD) because of the illness and related treatments. Currently, there is little known about how those patients experience and perceive their altered body image in the literature. The aim of this study was to explore the experiences of body image changes in patients with IBD in China and to describe how those changes influence patients’ perception of body and self. MethodsThis study used a descriptive qualitative approach. A total of 16 participants from three tertiary hospitals in southeast China were recruited through purposive sampling combined with maximum variation strategy. Data were collected through semistructured interviews and analyzed using conventional content analysis method. ResultsThe following six themes were extracted: (1) “being a constrained person,” (2) “being a flawed person,” (3) “being a disliked person,” (4) “being an alienated person,” (5) “being a reconciled person,” and (6) “being a blessed person.” ConclusionWith the diagnosis of IBD and its side effects of treatments, patients’ life changed significantly and they were struggling to reinterpret their body and self. As a result, negative self-evaluations and/or positive self-evaluations towards themselves generated. Further studies are required to explore the underlying mechanism and related influencing factors about how those different images were produced.

Patterns of care for inflammatory bowel disease in China during the COVID-19 pandemic

Patterns of care for inflammatory bowel disease in China during the COVID-19 pandemic

Characteristics and Prognosis of Patients With Inflammatory Bowel Disease During the SARS-CoV-2 Pandemic in the Basque Country (Spain)

Characteristics and Prognosis of Patients With Inflammatory Bowel Disease During the SARS-CoV-2 Pandemic in the Basque Country (Spain)

Bibliometric analysis of status and trend of studies on self-management in patients with inflammatory bowel disease in China

Objective To analyze the studies on self-management in patients with inflammatory bowel disease (IBD) in China and its development status, and provide a direction and idea for the further development of studies in this regard. Methods Relevant literatures on self-management in IBD patients published since the database was established to May 2018 were retrieved from CNKI, WanFang Data, VIP and CBM. NoteExpress 3.2.0 and Excel 2016 were used to establish a database. External characteristics such as the year, journal and author as well as internal characteristics such as the research type, research subject and intervention measures were extracted from the literatures, and methodological quality assessment was conducted over the randomized controlled trails (RCT) . Results Totally 87 articles about self-management in IBD patients were included in this study. The number of publications rose perpendicularly from 2014 to 2018. Totally 52 articles (65.82%) were published on the top 5 journals in terms of the total number of articles. The top 3 areas in terms of the total number of articles were Jiangsu (42) , Zhejiang (10) and Guangdong (7) . There were 64 (73.56%) co-authored articles in total, and 29 articles (36.71%) were supported by a grant. There were various types of intervention studies, but there was huge difference between them in intervention time and frequency and there was no complete assessment tool for outcome indicators yet. The blind method and random distribution were not stated in any RCT, and their quality needed to be improved. Conclusions Currently, China's studies on self-management in IBD patients are still in a rapid development stage. Both core journals, forums and authors have taken form, but researchers still need to develop a complete specificity assessment tool, apply complete outcome assessment indicators, and enhance the scientific and preciseness of research design and implementation, thus improving the quality of literatures. Key words: Bibliometrics; Inflammatory bowel disease; Self-management; Methodological quality

Differences in inflammatory bowel diseases between East and West: a Chinese perspective

Inflammatory bowel disease (IBD), a traditionally “western disease”, has recently been reported to have risen in incidence in China. We summarize differences between Chinese and Western IBD based on relevant literatures published in both Chinese and English. Relevant references published in English were collected from an electronic database via PubMed and relevant references published in Chinese were also collected. Emerging clinical epidemiological data have shown a striking rise in the incidence rate of IBD in Mainland China over the last two decades. Although the current incidence rate of IBD in Mainland China is still lower than that in Western countries, the associated disease burden might be much heavier than previously thought due to the huge population. Clinical data have shown that disease characteristics (e.g., age of onset, male/female ratio, and location and disease severity) of Chinese IBD patients are different to those of Western IBD patients. Unlike the widely used bioimmunotherapeutic agents in Western countries, the management of IBD in China relies predominately on aminosalicylates and corticosteroids. The use of bioimmunotherapeutic agents is limited to a small number of IBD patients in China. Currently, many challenges remain, including the lack of properly trained IBD specialists, poor information availability to support patient self-management, and inappropriate treatment of some patients. Based on the current findings, the disease burden, characteristics, and treatment of Chinese IBD patients are slightly different to those of Western IBD patients. There are still great improvement requirements for the clinical management of IBD in China.

Nested case-control study on risk factors for opportunistic infections in patients with inflammatory bowel disease.

BACKGROUNDWhen opportunistic infections occur, patients with inflammatory bowel disease (IBD) commonly display a significantly increased rate of morbidity and mortality. With increasing use of immunosuppressive agents and biological agents, opportunistic infections are becoming a hot topic in the perspective of drug safety in IBD patients. Despite the well-established role of opportunistic infections in the prognosis of IBD patients, there are few epidemiological data investigating the incidence of opportunis-tic infections in IBD patients in China. Besides, the risk factors for opportunistic infection in Chinese IBD patients remain unclear.AIMTo predict the incidence of opportunistic infections related to IBD in China, and explore the risk factors for opportunistic infections.METHODSA single-center, prospective study of IBD patients was conducted. The patients were followed for up to 12 mo to calculate the incidence of infections. For each infected IBD patient, two non-infected IBD patients were selected as controls. A conditional logistic regression analysis was used to assess associations between putative risk factors and opportunistic infections, which are represented as odds ratios (OR) and 95% confidence intervals (CIs).RESULTSSeventy (28.11%) out of 249 IBD patients developed opportunistic infections. Clostridium difficile infections and respiratory syncytial virus infections were found in 24 and 16 patients, respectively. In a univariate analysis, factors such as the severity of IBD, use of an immunosuppressant or immunosuppressants, high levels of fecal calprotectin, and C-reactive protein or erythrocyte sedimentation rate were individually related to a significantly increased risk of opportunistic infection. Multivariate analysis indicated that the use of any immunosuppressant yielded an OR of 3.247 (95%CI: 1.128-9.341), whereas the use of any two immunosuppressants yielded an OR of 6.457 (95%CI: 1.726-24.152) for opportunistic infection. Interestingly, when immunosuppressants were used in combination with infliximab (IFX) or 5-aminosalicylic acid, a significantly increased risk of opportunistic infection was also observed. The relative risk of opportunistic infection was greatest in IBD patients with severe disease activity (OR = 9.090; 95%CI: 1.532-53.941, relative to the remission stage). However, the use of IFX alone did not increase the risk of opportunistic infection.CONCLUSIONFactors such as severe IBD, elevated levels of fecal calprotectin, and the use of immunosuppressive medications, especially when used in combination, are major risk factors for opportunistic infections in IBD patients. The use of IFX alone does not increase the risk of opportunistic infection.

Acute pancreatitis associated with indigo naturalis in pediatric severe Crohn’s disease

The incidence of inflammatory bowel disease (IBD) is rapidly increasing worldwide. Indigo naturalis is known to have an antiinflammatory effect. Indigo naturalis has been traditionally used in the treatment of IBD in China and Japan. Currently, it is used as a primary or adjunctive drug in patients with ulcerative colitis. There are some reports of the effects of indigo naturalis when used in patients with ulcerative colitis. However, its usage has been associated with adverse events, including liver dysfunction, headache, gastrointestinal disturbance, and pulmonary hypertension. Pancreatitis as an adverse event during treatment using indigo naturalis has not yet been reported. We report a case of recurrent events of pancreatitis that occurred briefly after starting medication with indigo naturalis in a child with severe Crohn’s disease. The pancreatitis improved after indigo naturalis was discontinued in 2 events. This is the first case to report the association between pancreatitis and indigo naturalis in the English literature.

Diagnostic utility of serological biomarkers in patients with Crohn's disease: A case-control study.

The aim of this study was to examine the expression of serological markers in patients with inflammatory bowel disease in China, and determine the diagnostic utility of serological markers, individually and in combination, for the diagnosis and differential diagnosis of Crohn's disease (CD).Serum samples were obtained from 160 participants in Eastern China. Among the participants, 98 were diagnosed with CD, 33 had ulcerative colitis (UC), and 29 were healthy controls (HC). The serum samples were tested for the presence of antibodies against outer membrane porin C (anti-OmpC), Pseudomonas fluorescens bacterial sequence I2 (anti-I2), anti-laminarin (anti-L), anti-chitin (anti-C), anti-chitobioside carbohydrate antibody (ACCA), anti-laminaribioside carbohydrate antibody (ALCA), anti-mannobioside carbohydrate antibody (AMCA), and anti-Saccharomyces cerevisiae antibody (ASCA) by indirect enzyme-linked immunosorbent assay (ELISA).Individually, anti-C, anti-L, ASCA-IgG, and ALCA lacked diagnostic value in the differentiation of CD. ASCA-IgA remained the most accurate marker for the diagnosis of CD, with an area under the curve (AUC) of 0.77; however, its sensitivity and specificity were both lower than 75%. Among the combinations of the 5 markers with significant diagnosing ability for CD, combinations with any 2 of the 3 markers, ASCA IgA, AMCA, and ACCA positive, provided the best accuracy in the diagnosis and differential diagnosis of CD (sensitivity and specificity both above 75%) and had the highest Youden index.Serological antibodies, when considered in combination, have remarkable value in the diagnosis and differential diagnosis of CD. Especially, the combination of any 2 of the 3 markers, ASCA-IgA, AMCA, ACCA positive, appears to be optimal.

Study of disease phenotype and its association with prognosis of paediatric inflammatory bowel disease in China

BackgroundTo investigate the unique features of inflammatory bowel disease (IBD) in children, we wanted to identify whether there might be a strong correlation between the disease phenotype and its prognosis at various ages in paediatric patients.MethodsWe collected data from patients diagnosed with IBD (ulcerative colitis (UC) or Crohn’s disease (CD)) from 2002 to 2016. The diagnosis was made according to the Porto criteria and Paris Classification. Patient characteristics, clinical manifestations and treatments were collected. Risk factors for surgery, mortality and relapse were analysed by Cox proportional hazard models.ResultsOf the 143 patients, 113 had CD, and 30 had UC; there were 89 males and 54 females with a median age of 9 years (y). Thirteen patients in the 0–2 y group were identified as having mutations in IL-10 receptor A, and this mutation was significantly more common in this age group than in 3–9 and 10–16 y patients. The risk factor for surgery was the B3 phenotype; risk factors for death were age 0–2 y and B3 phenotype; 0–2 y, B3 phenotype and steroid dependency were risk factors for early relapse.ConclusionsClinical manifestations of the onset of IBD in infants and toddlers were extensive and aggressive and were closely associated with early relapse and death. It is of particular interest that some of these patients developed IBD due to monogenic disorders; thus, introduction of genetic testing is essential for these patients.

Current status and challenge of basic research and clinical translation for inflammatory bowel disease in China

Current status and challenge of basic research and clinical translation for inflammatory bowel disease in China

Indigo Naturalis Ameliorates Oxazolone-Induced Dermatitis but Aggravates Colitis by Changing the Composition of Gut Microflora

Background: Indigo naturalis (IND) is an herbal medicine that has been used as an anti-inflammatory agent to treat diseases including dermatitis and inflammatory bowel disease in China. However, the mechanism by which IND exerts its immunomodulatory effect is not well understood. Methods: A murine model of dermatitis and inflammatory bowel disease, both induced by oxazolone (OXA), was treated with IND. The severity of dermatitis was evaluated based on ear thickness measurements and histological scoring. The severity of colitis was evaluated by measuring body weight, histological scoring, and endoscopic scoring. The expression of inflammatory cytokines in ear and colon tissue was evaluated using real-time PCR. 16S rRNA DNA sequencing of feces from OXA-induced colitis mice was performed before and after IND treatment. The effects of IND on OXA-induced colitis were also evaluated after depleting the gut flora with antibiotics to test whether alteration of the gut flora by IND influenced the course of intestinal inflammation in this model. Results: IND treatment ameliorated OXA dermatitis with a reduction in IL-4 and eosinophil recruitment. However, OXA colitis was significantly aggravated in spite of a reduction in intestinal IL-13, a pivotal cytokine in the induction of the colitis. It was found that IND dramatically altered the gut flora and IND no longer exacerbated colitis when colitis was induced after gut flora depletion. Conclusions: Our data suggest that IND could modify the inflammatory immune response in multiple ways, either directly (i.e., modification of the allergic immune cell activity) or indirectly (i.e., alteration of commensal compositions).

Status of serum vitamin B12 and folate in patients with inflammatory bowel disease in China.

Background/AimsInflammatory bowel disease (IBD) primarily involves the intestinal tract and can affect vitamin absorption. This study was designed to assess the prevalence of vitamin B12 and folate deficiencies in patients with IBD, and to identify the risk factors associated with abnormal serum vitamin B12 and folate levels.MethodsWe evaluated the medical records of 195 patients with Crohn's disease (CD) and 62 patients with ulcerative colitis (UC), and selected 118 healthy subjects for the control group.ResultsThere were more CD patients with vitamin B12 deficiency than UC patients (14.9% vs. 3.2%, P=0.014) and controls (14.9% vs. 4.2%, P=0.003). The prevalence of folate deficiency was higher in CD patients than in controls (13.3% vs. 3.4%, P=0.004). There were no significant differences in the serum vitamin B12 and folate statuses of the UC and control groups. Patients with prior ileal or ileocolic resection showed a higher prevalence of abnormal vitamin B12 levels than those without prior resection (n=6/16, n=23/179; P=0.018). A disease duration within 5 years was a risk factor of abnormal folate levels in CD patients.ConclusionsThis study showed that vitamin B12 and folate deficiencies were more common in patients with CD than in UC patients and controls. Prior ileal or ileocolonic resection was a risk factor of serum vitamin B12 abnormalities, and a disease duration within 5 years was a risk factor of low serum folate levels in CD patients.

Huangqin-tang ameliorates dextran sodium sulphate-induced colitis by regulating intestinal epithelial cell homeostasis, inflammation and immune response.

Huangqin-tang (HQT) is a traditional Chinese medicine (TCM) formula widely used for the treatment of inflammatory bowel disease in China. However, the molecular mechanisms by which HQT protects the colon are unclear. We studied the protective effects of HQT and the underlying mechanisms in an experimental mouse model and in vitro. In vivo, dextran sodium sulphate (DSS)-induced acute and chronic colitis were significantly ameliorated by HQT as gauged by phenotypic, histopathologic and inflammatory manifestations of the disease. Mechanistically, DSS-induced nuclear factor-κB (NF-κB) signalling was inhibited by HQT. Moreover, HQT-treated mice demonstrated significant changes in cell apoptosis, expression of apoptosis-associated genes such as caspase-3, bax, bcl-2, and intestinal permeability. HQT also increased occluding and zonula occludens-1 (ZO-1), inhibited cell proliferation (Ki67), and increased regulatory T cells numbers, protein expression of Foxp3 and IL-10 in the colonic tissue. In vitro, HQT down-regulated production of pro-inflammatory cytokines and supressed the NF-κB signalling pathway in lipopolysaccharides-induced RAW 264.7 macrophages. Our study suggests that HQT plays a critical role in regulating intestinal epithelial cell homeostasis, inflammation and immune response in colitis and offers novel therapeutic options in the management of inflammatory bowel disease.

Adherent-invasive Escherichia coli isolated from the patient with inflammatory bowel disease in China

Objective To study adhesion and invasion of adherent-invasive Escherichia coli strains and its ability of survival and proliferation in macrophage cells. Methods Bacteria from the mucosa tissues of ileum, colon and rectum of inflammatory bowel disease (IBD) patients were isolated, cultured and identified. The toxic genes were confirmed by polymerase chain reaction. The adhesion and invasion ability of bacteria and its survival and proliferation ability in macrophage cells were observed after co-culture with cells. Results Five adherent-invasive Escherichia coli strains were isolated from the intestinal mucosa specimens of two patients with Crohn′s disease and one patient with ulcerative colitis. The adhesion rates of five bacteria stains (2A, 2B, 15A, 15B, 19B) to Caco-2 cells were (1.4±1.3)%, (1.5±0.6)%, (0.6±0.1)%, (1.4±0.4)% and (1.1±0.8)%, respectively. The adhesion rates to Int-407 cells were (1.0±0.8)%, (1.5±0.8)%, (1.0±0.8)%, (1.0±0.8)% and (0.3±0.0)%, respectively. The invasion rates to Hep-2 cells were (10.1±7.0)%, (0.7±0.4)%, (0.4±0.3)%, (2.2±1.0)% and (2.1±1.8)%, respectively. The invasion rates to Int-407 cells were (0.7±0.5)%, (0.5±0.3)%, (2.8±1.2)%, (0.7±0.5)% and (0.5±0.4)%, respectively. All five adherent-invasive Escherichia coli strains could survive and proliferate in macrophage cells. Conclusions Five adherent-invasive Escherichia coli strains are isolated for the first time in Chinese patients with IBD, and all of them could survive and proliferate in macrophage cells. Key words: Inflammatory bowel diseases; Adherent-invasive Escherichia coli; Isolation; Identification

Current research and progress of inflammatory bowel disease in China

Current research and progress of inflammatory bowel disease in China

Prevention and management of postoperative complications in patients with inflammatory bowel disease

The incidence of inflammatory bowel disease in China is rising on a yearly basis, followed by an increased number of patients who require surgery and those who suffer from maneuver postoperative complications. Surgical treatment is important in the management of patients with inflammatory bowel diseases. Management and prevention of postoperative complications is also a key factor to the success of surgical treatment if it is not more important than the surgical procedure itself. In this article, the most recent literatures in this field will be reviewed combined with our own clinical experiences. The types, risk factors, preoperative prevention strategies as well as postoperative management of surgical complications of patients with inflammatory bowel disease will be discussed.

Surgical management of inflammatory bowel disease in China: a systematic review of two decades.

Background/AimsThe past decades have seen increasing incidence and prevalence of inflammatory bowel disease (IBD) in China. This article aimed to summarize the current status and characteristics of surgical management for IBD in China.MethodsWe searched PubMed, Embase, and Chinese databases from January 1, 1990 to July 1, 2014 for all relevant studies on the surgical treatment IBD in China. Eligible studies with sufficient defined variables were further reviewed for primary and secondary outcome measures.ResultsA total of 74 studies comprising 2,007 subjects with Crohn's disease (CD) and 1,085 subjects with ulcerative colitis (UC) were included. The percentage of CD patients misdiagnosed before surgery, including misdiagnosis as appendicitis or UC, was 50.8%±30.9% (578/1,268). The overall postoperative complication rate was 22.3%±13.0% (267/1,501). For studies of UC, the overall postoperative complication rate was 22.2%±27.9% (176/725). In large research centers (n>50 surgical cases), the rates of emergency operations for CD (P=0.032) and in-hospital mortalities resulting from both CD and UC were much lower than those in smaller research centers (n≤50 surgical cases) (P=0.026 and P <0.001, respectively). Regarding the changes in CD and UC surgery over time, postoperative complications (P=0.045 for CD; P=0.020 for UC) and postoperative in-hospital mortality (P=0.0002 for CD; P=0.0160 for UC) both significantly improved after the year 2010.ConclusionsThe surgical management of IBD in China has improved over time. However, the rates of misdiagnosis and postoperative complications over the past two decades have remained high. Large research centers were found to have relatively better capacity for surgical management than the smaller ones. Higher quality prospective studies are needed in China.