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Wang X, Zhu D, Li S, Dai Y, Teng G, Wang W. Influence of Helicobacter pylori Infection and Eradication on Small Intestinal Bacterial Overgrowth and Abdominal Symptoms. Dig Dis Sci 2024:10.1007/s10620-024-08279-y. [PMID: 38363519 DOI: 10.1007/s10620-024-08279-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Accepted: 12/04/2023] [Indexed: 02/17/2024]
Abstract
BACKGROUND The relationship between Helicobacter pylori (H. pylori) infection and small intestinal bacterial overgrowth (SIBO) has attracted attention recently. AIMS To analyze the influence of H. pylori infection and eradication on SIBO, IMO, and abdominal symptoms. METHODS Patients with gastrointestinal symptoms were tested for 13C urea breath test and if positive, treated with bismuth-based quadruple therapy. Lactulose hydrogen methane breath test (HMBT) was performed and symptoms were assessed using gastrointestinal symptom rating scale (GSRS) before and 6 weeks after eradication. RESULTS Of the 102 subjects, 53 were H. pylori positive. The prevalence of SIBO and IMO were higher in patients with H. pylori infection than in those without infection (49.1% vs 24.5%, P = 0.019 for SIBO; 24.5% vs 8.2%, P = 0.027 for IMO). GSRS scores were similar between H. pylori-infected and uninfected patients (2 (IQR: 1;3) vs 2 (IQR: 1;2), P = 0.211). Patients with SIBO or IMO presented higher GSRS scores than patients with both SIBO and IMO negative (2 (IQR: 2;3), 2 (IQR: 2;3) vs 2 (IQR: 1;2), P = 0.011, 0.001, respectively). For the 50 patients who successfully eradicated H. pylori, the response rates for SIBO and IMO were 66.7% and 76.9%, respectively. GSRS scores also significantly decreased (2 (IQR: 1;3) to 0 (IQR: 0;1), P < 0.001) after eradication. CONCLUSION Helicobacter pylori infection was associated with higher prevalence of SIBO and IMO, both of which led to more pronounced abdominal symptoms. H. pylori eradication also achieved therapeutic effects on SIBO and IMO, accompanied by relief of abdominal symptoms.
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Affiliation(s)
- Xiaolei Wang
- Department of Gastroenterology, Peking University First Hospital, No.8 Xishiku Street, Beijing, 100034, China
| | - Die Zhu
- Department of Gastroenterology, Peking University First Hospital, No.8 Xishiku Street, Beijing, 100034, China
| | - Siyu Li
- Department of Gastroenterology, Beijing Hospital, Beijing, China
| | - Yun Dai
- Department of Gastroenterology, Peking University First Hospital, No.8 Xishiku Street, Beijing, 100034, China
| | - Guigen Teng
- Department of Gastroenterology, Peking University First Hospital, No.8 Xishiku Street, Beijing, 100034, China
| | - Weihong Wang
- Department of Gastroenterology, Peking University First Hospital, No.8 Xishiku Street, Beijing, 100034, China.
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He S, Jiang H, Tian Y, Zhang W, Teng G, Wang H. Ulcerative colitis overall disease severity index predicts colectomy: a prospective cohort study. Rev Esp Enferm Dig 2024; 116:77-82. [PMID: 37706493 DOI: 10.17235/reed.2023.9754/2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/15/2023]
Abstract
BACKGROUND ulcerative colitis (UC) overall disease severity index (DSI) has been established. A prospective cohort study was performed to find the value of DSI to predict colectomy within one and four years and explored the association between DSI and other indexes. METHODS the hospitalized UC patients were enrolled from March 2018 to January 2019 in this single center study. DSI, Truelove and Witts criteria, Mayo index and Seo index were assessed by medical records. Outcome was whether to undergo colectomy within one and four years and was obtained by telephone survey or medical records. Index values of predicting colectomy within one and four years were evaluated using receiver operating characteristics (ROC) curves. RESULTS one hundred and thirty-eight of 233 hospitalized UC patients were enrolled. Within one year, the follow-up period was less than one year for six patients and two patients had died. A further nine patients underwent colectomy. The Spearman correlation coefficient between DSI and Truelove and Witts criteria, Mayo index and Seo index were 0.730, 0.839 and 0.843, respectively. Using these indices to predict colectomy within one and four years, the area under the curve of DSI was more than those of other indices and the cut-off value of DSI was 79. CONCLUSIONS a good correlation of DSI with other indexes was demonstrated. DSI can be used to predict the need for colectomy within one or four years.
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Affiliation(s)
- Shengduo He
- Gastroenterology, Peking University First Hospital, China
| | - Hong Jiang
- Gastroenterology, Peking University First Hospital, China
| | - Yu Tian
- Gastroenterology, Peking University First Hospital
| | - Wei Zhang
- Gastroenterology, Peking University First Hospital
| | - Guigen Teng
- Gastroenterology, Peking University First Hospital, China
| | - Huahong Wang
- Gastroenterology, Peking University First Hospital, China
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Wang X, Teng G, Dong X, Dai Y, Wang W. Efficacy and safety of vonoprazan-amoxicillin dual therapy for Helicobacter pylori first-line treatment: a single-center, randomized, controlled trial. Therap Adv Gastroenterol 2023; 16:17562848231190976. [PMID: 37664169 PMCID: PMC10469240 DOI: 10.1177/17562848231190976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 07/13/2023] [Indexed: 09/05/2023] Open
Abstract
Background With the increase in antibiotic resistance, the success rate of Helicobacter pylori (H. pylori) eradication therapy has declined in recent years. Vonoprazan-amoxicillin (VA) dual therapy has been reported to be a promising regimen. Objectives To compare the efficacy and safety of VA dual therapy and bismuth quadruple therapy containing amoxicillin and clarithromycin for H. pylori first-line eradication, and to further analyze the effects of clarithromycin resistance on eradication rate. Design This study was a single-center, open-label, randomized controlled trial. Methods Treatment-naïve H. pylori-infected patients were randomly allocated 1:1 to the VA group (vonoprazan 20 mg twice daily and amoxicillin 750 mg four times daily, for 14 days) or the RBAC group (rabeprazole 10 mg, bismuth potassium citrate 220 mg, amoxicillin 1000 mg and clarithromycin 500 mg twice daily, for 14 days). H. pylori clarithromycin resistance and CYP2C19 gene polymorphisms were detected with real-time polymerase chain reaction (PCR) technique. The eradication rates and adverse events were analyzed. Results A total of 151 patients were enrolled. The intention-to-treat (ITT), modified intention-to-treat (mITT), and per-protocol (PP) eradication rates and their 95% confidence intervals (95% CIs) were 94.6% (86.0-98.3%), 98.6% (91.3-99.9%), and 98.5% (90.9-99.9%) for VA group and 87.0% (77.0-93.3%), 91.8% (82.3-96.6%), and 93% (83.7-97.4%) for RBAC group. The eradication rate of the VA group was noninferior to the RBAC group in ITT, mITT, and PP analyses (p < 0.0001). In patients infected with strains of clarithromycin resistance point mutation, the eradication rate of the RBAC group decreased to lower than 90%, but the difference from the VA group did not achieve statistical significance (ITT eradication rate: 81.5% in the RBAC group and 96.2% in the VA group, p = 0.192). The incidence of adverse events in the VA group was 39.2%, which was significantly lower than that in the RBAC group (79.2%, p = 0.000). Conclusion The efficacy of VA dual therapy is noninferior to RBAC in H. pylori first-line eradication, with fewer adverse reactions. Registration This study was registered at the Chinese Clinical Trial Registry (ChiCTR2100052550) on 30 October 2021.
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Affiliation(s)
- Xiaolei Wang
- Department of Gastroenterology, Peking University First Hospital, Beijing, China
| | - Guigen Teng
- Department of Gastroenterology, Peking University First Hospital, Beijing, China
| | - Xinhong Dong
- Department of Gastroenterology, Peking University First Hospital, Beijing, China
| | - Yun Dai
- Department of Gastroenterology, Peking University First Hospital, Beijing, China
| | - Weihong Wang
- Department of Gastroenterology, Peking University First Hospital, No.8 Xishiku Street, Beijing 100034, China
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Dong J, Feng Q, Teng G, Niu H, Bian D. Application of a New Hemostatic Clip to Prevent Delayed Bleeding After Endoscopic Sphincterotomy: A Propensity Score-matched Analysis. J Clin Gastroenterol 2023:00004836-990000000-00196. [PMID: 37646562 DOI: 10.1097/mcg.0000000000001906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Accepted: 07/16/2023] [Indexed: 09/01/2023]
Abstract
BACKGROUND AND AIM Delayed bleeding after endoscopic sphincterotomy (ES) is a serious adverse event of endoscopic retrograde cholangiopancreatography. The aim of this study is to evaluate the effect of prevent delayed bleeding of hemostatic clip (Sureclip) after ES. METHODS Consecutive patients diagnosed with common bile duct stones with a high risk of delayed bleeding who received ES from January 1, 2013, to July 31, 2022, were analyzed retrospectively. A 1:1 propensity score-matching analysis and logistic regression analysis were used. The patients were allocated into the hemostatic clip and control groups. The rate of delayed bleeding, hyperamylasemia, pancreatitis, and hemostatic clip closing the bile duct or pancreatic duct by mistake were compared between the 2 groups. RESULTS Overall, 161 and 232 patients were allocated to the control and hemostatic clip groups, respectively, propensity score matching created 120 matched pairs. The rate of delayed bleeding was significantly lower in the hemostatic clip group than in the control group (1.67% vs. 7.5%, P=0.031). After adjusting for confounding factors, logistic regression showed hemostatic clip was associated with decreased odds of delayed bleeding (0.134, 95% CI: 0.025-0.719). No case of hemostatic clip closing the bile duct or pancreatic duct by mistake occurred in the hemostatic clip group. No significant differences were observed in postoperative hyperamylasemia and pancreatitis between the 2 groups. CONCLUSIONS This study indicated that the prophylactic application of a hemostatic clip is associated with a significantly reduced rate of delayed bleeding after ES in high-risk patients. This approach did not increase the risk of adverse event.
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Affiliation(s)
| | | | | | - Haixia Niu
- Endoscopy, Peking University First Hospital, Beijing, China
| | - Dapeng Bian
- Endoscopy, Peking University First Hospital, Beijing, China
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Zhou S, Chai P, Dong X, Liang Z, Yang Z, Li J, Teng G, Sun S, Xu M, Zheng ZJ, Wang J, Zhang Z, Chen K. Drinking water quality and inflammatory bowel disease: a prospective cohort study. Environ Sci Pollut Res Int 2023:10.1007/s11356-023-27460-w. [PMID: 37160856 DOI: 10.1007/s11356-023-27460-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Accepted: 05/02/2023] [Indexed: 05/11/2023]
Abstract
Environmental factors, such as drinking water and diets, play an important role in the development of inflammatory bowel disease (IBD). This study aimed to investigate the associations of metal elements and disinfectants in drinking water with the risk of inflammatory bowel disease (IBD) and to assess whether diet influences these associations. We conducted a prospective cohort study including 22,824 participants free from IBD from the Yinzhou cohort study in the 2016-2022 period with an average follow-up of 5.24 years. The metal and disinfectant concentrations were measured in local pipeline terminal tap water samples. Cox regression models adjusted for multi-level covariates were used to estimate adjusted hazard ratios (aHRs) and 95% confidence intervals (95% CIs). During an average follow-up period of 5.24 years, 46 cases of IBD were identified. For every 1 standard deviation (SD) increase in the concentration of manganese, mercury, selenium, sulfur tetraoxide (SO4), chlorine, and nitrate nitrogen (NO3_N) were associated with a higher risk of IBD with the HRs of 1.45 (95% CI: 1.14 to 1.84), 1.51 (95% CI: 1.24-1.82), 1.29 (95% CI: 1.03-1.61), 1.52 (95% CI: 1.26-1.83), 1.26 (95% CI: 1.18-1.34), and 1.66 (95% CI: 1.32-2.09), whereas zinc and fluorine were inversely associated with IBD with the HRs of 0.42 (95% CI: 0.24 to 0.73) and 0.68 (95% CI: 0.54-0.84), respectively. Stronger associations were observed in females, higher income groups, low education groups, former drinkers, and participants who never drink tea. Diets have a moderating effect on the associations of metal and nonmetal elements with the risk of IBD. We found significant associations between exposure to metals and disinfectants and IBD. Diets regulated the associations to some extent.
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Affiliation(s)
- Shuduo Zhou
- Department of Global Health, School of Public Health, Peking University, 38 Xue Yuan Road, Haidian District, Beijing, 100191, China
- Institute for Global Health and Development, Peking University, Beijing, China
| | - Pengfei Chai
- The Center for Disease Control and Prevention of Yinzhou District, Ningbo, Zhejiang, China
| | - Xuejie Dong
- Department of Global Health, School of Public Health, Peking University, 38 Xue Yuan Road, Haidian District, Beijing, 100191, China
- Institute for Global Health and Development, Peking University, Beijing, China
| | - Zhisheng Liang
- Department of Global Health, School of Public Health, Peking University, 38 Xue Yuan Road, Haidian District, Beijing, 100191, China
| | - Zongming Yang
- Department of Epidemiology and Biostatistics, Zhejiang University School of Public Health, Hangzhou, 310058, China
| | - Junxia Li
- Department of Gastroenterology, Peking University First Hospital, Beijing, 100034, China
| | - Guigen Teng
- Department of Gastroenterology, Peking University First Hospital, Beijing, 100034, China
| | - Shengzhi Sun
- School of Public Health, Capital Medical University, Beijing, 100069, China
| | - Ming Xu
- Department of Global Health, School of Public Health, Peking University, 38 Xue Yuan Road, Haidian District, Beijing, 100191, China
- Institute for Global Health and Development, Peking University, Beijing, China
| | - Zhi-Jie Zheng
- Department of Global Health, School of Public Health, Peking University, 38 Xue Yuan Road, Haidian District, Beijing, 100191, China
- Institute for Global Health and Development, Peking University, Beijing, China
| | - Jianbing Wang
- Department of Epidemiology and Biostatistics, Zhejiang University School of Public Health, Hangzhou, 310058, China
- Department of Epidemiology and Biostatistics, and National Clinical Research Center for Child Health of the Children's Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Zhenyu Zhang
- Department of Global Health, School of Public Health, Peking University, 38 Xue Yuan Road, Haidian District, Beijing, 100191, China.
- Institute for Global Health and Development, Peking University, Beijing, China.
| | - Kun Chen
- Department of Epidemiology and Biostatistics, Zhejiang University School of Public Health, Hangzhou, 310058, China
- Department of Epidemiology and Biostatistics, and Cancer Institute of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China
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Gao W, Xu Y, Liu J, Wang X, Dong X, Teng G, Liu B, Dong J, Ge C, Ye H, Zhang X, Cheng H. A real-world exploratory study on the feasibility of vonoprazan and tetracycline dual therapy for the treatment of Helicobacter pylori infection in special populations with penicillin allergy or failed in previous amoxicillin-containing therapies. Helicobacter 2023; 28:e12947. [PMID: 36650673 DOI: 10.1111/hel.12947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 12/05/2022] [Accepted: 12/29/2022] [Indexed: 01/19/2023]
Abstract
BACKGROUND The treatment of Helicobacter pylori (H. pylori) infection is a challenge for those who cannot use amoxicillin. OBJECTIVE To evaluate the eradication rate and adverse effects of vonoprazan and tetracycline dual therapy as first-line and rescue treatment regimens used in special populations with penicillin allergy or failed in previous amoxicillin-containing therapies. DESIGN Patients enrolled were those who were H. pylori-positive with selected conditions: (1) allergic to penicillin, either naïve to treatment or had failed before; or (2) failed in previous amoxicillin-containing therapies. All enrolled patients accepted 14-day vonoprazan and tetracycline dual therapy (VT dual therapy) as follows: vonoprazan (20 mg b.i.d.) and tetracycline (500 mg t.i.d. [body weight < 70 kg] or 500 mg q.i.d. [body weight ≥ 70 kg]). H. pylori status was evaluated by 13 C-urease breath test 6 weeks after treatment. All adverse effects were recorded. Some patients underwent bacterial culture and antibiotic susceptibility testing. RESULTS A total of 62 patients were enrolled; 18 of them received VT dual therapy as first-line treatment, 44 patients received VT dual therapy as rescue treatment. Overall, 58 of 62 patients achieved successful eradication (93.5%), while all involved (100%,18/18) succeeded in the first-line treatment group and 40 cases (90.9%, 40/44) succeeded in the rescue treatment group. Sixty-one (61/62, 98.4%) patients completed the whole course of treatment. Adverse events occurred in 6 patients (6/62, 9.7%), while one patient quit because of skin rash. All adverse effects were mild and relieved spontaneously after H. pylori treatment. Five patients achieved successful H. pylori culture, and all strains isolated were sensitive to tetracycline. CONCLUSIONS For the treatment of H. pylori infection in special populations with penicillin allergy or failed in previous amoxicillin-containing therapies, a 14-day vonoprazan and tetracycline dual therapy was effective and safe as first-line and rescue treatment in our study. Further study is warranted to verify its efficacy, especially for those who cannot use amoxicillin.
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Affiliation(s)
- Wen Gao
- GI Department, Peking University First Hospital, Beijing, China
| | - Ying Xu
- GI Department, Peking University First Hospital, Beijing, China
| | - Jianxiang Liu
- GI Department, Peking University First Hospital, Beijing, China
| | - Xiaolei Wang
- GI Department, Peking University First Hospital, Beijing, China
| | - Xinhong Dong
- GI Department, Peking University First Hospital, Beijing, China
| | - Guigen Teng
- GI Department, Peking University First Hospital, Beijing, China
| | - Binbin Liu
- GI Department, Peking University First Hospital, Beijing, China
| | - Jinpei Dong
- GI Department, Peking University First Hospital, Beijing, China
| | - Chaoyi Ge
- GI Department, Peking University First Hospital, Beijing, China
| | - Hui Ye
- TCM and Integrative Medicine Department, Peking University First Hospital, Beijing, China
| | - Xuezhi Zhang
- TCM and Integrative Medicine Department, Peking University First Hospital, Beijing, China
| | - Hong Cheng
- GI Department, Peking University First Hospital, Beijing, China
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Gao W, Teng G, Wang C, Xu Y, Li Y, Cheng H. Eradication rate and safety of a "simplified rescue therapy": 14-day vonoprazan and amoxicillin dual regimen as rescue therapy on treatment of Helicobacter pylori infection previously failed in eradication: A real-world, retrospective clinical study in China. Helicobacter 2022; 27:e12918. [PMID: 35877765 PMCID: PMC9542484 DOI: 10.1111/hel.12918] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Revised: 05/31/2022] [Accepted: 06/17/2022] [Indexed: 12/19/2022]
Abstract
BACKGROUND The currently recommended quadruple regimens as rescue therapy on Helicobacter pylori infection were not as effective as being supposed, especially in those who had failed two or more times. Dual regimen composed of vonoprazan (a potassium-competitive acid blocker) and amoxicillin might be an option since it's effective in eradication therapy as first-line treatment. OBJECTIVE As a real-world retrospective study, data were collected to evaluate the efficacy and safety of vonoprazan and amoxicillin dual regimen as rescue therapy in Helicobacter pylori positive patients who had failed one or more times in their previous treatment. METHODS From May 2020 to June 2021, the clinical data of patients who had failed in Helicobacter pylori infection treatment were collected in GI department of Peking University First Hospital, Beijing, China. Patients were given vonoprazan 20 mg or 40 mg per day and amoxicillin 3000 mg per day (VA dual therapy) for 14 days as rescue treatment. Helicobacter pylori status was evaluated by 13 C-urease breath test 6 weeks after treatment. All adverse effects during treatment were recorded. RESULTS A total of 186 patients were enrolled, including 67 males and 119 females. All of them had failed for 1 ~ 7 times in their previous treatment. Successful eradication was achieved in 172 patients (92.5%, 172/186). The adverse effects (referring to skin rash, abdominal pain, diarrhea, and headache), mainly mild and did not cause quit of treatment, occurred in 14 patients (7.5%, 14/186) and all symptoms relieved spontaneously. CONCLUSIONS Dual regimen composed of vonoprazan and amoxicillin for 14 days was effective and safe as rescue therapy in Helicobacter pylori infection treatment. It could be chosen as a "simplified rescue therapy" with relatively high eradication rate no matter how many times the patients had failed and what regimens they had used previously.
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Affiliation(s)
- Wen Gao
- GI DepartmentPeking University First HospitalBeijingChina
| | - Guigen Teng
- GI DepartmentPeking University First HospitalBeijingChina
| | - Chi Wang
- GI DepartmentPeking University First HospitalBeijingChina
| | - Ying Xu
- GI DepartmentPeking University First HospitalBeijingChina
| | - Yixuan Li
- GI DepartmentPeking University First HospitalBeijingChina
| | - Hong Cheng
- GI DepartmentPeking University First HospitalBeijingChina
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Chen J, Zhong B, Jin Z, Zhu H, Teng G. Abstract No. 174 Predictive value of platelet-to-lymphocyte ratio and systemic immune-inflammation in HCC patients receiving TACE plus PD-1/PD-L1 inhibitors and molecular targeted agents: a study based on multicenter cohort. J Vasc Interv Radiol 2022. [DOI: 10.1016/j.jvir.2022.03.255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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Teng G, Liu Z, Liu Y, Wu T, Dai Y, Wang H, Wang W. Probiotic Escherichia coli Nissle 1917 Expressing Elafin Protects Against Inflammation and Restores the Gut Microbiota. Front Microbiol 2022; 13:819336. [PMID: 35602072 PMCID: PMC9121173 DOI: 10.3389/fmicb.2022.819336] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Accepted: 04/07/2022] [Indexed: 11/13/2022] Open
Abstract
Intestinal mucosal inflammation and epithelial barrier dysfunction have been implicated as pathological factors in inflammatory bowel disease (IBD). An emerging area of IBD research focuses on probiotics. The probiotic Escherichia coli Nissle 1917 (EcN) is an excellent choice for engineering therapeutic microbes. Elafin is an endogenous specific inhibitor of neutrophil elastase (NE) and proteinase 3, and we previously found Elafin can effectively suppress the development of colitis. Here, we genetically engineered EcN to deliver Elafin (EcN-Elafin) directly to the colonic mucosa and explored the protective effects of EcN-Elafin against colitis in mice. EcN-Elafin significantly alleviated dextran sodium sulfate (DSS) induced colitis. Compared with wild-type EcN, oral administration of EcN-Elafin displayed better effects on loss of weight, colon length shortening, elevated expression of myeloperoxidase (MPO), and proinflammatory cytokines and chemokine in colonic tissues. In addition, EcN-Elafin restored the expression and distribution of tight junction protein ZO-1 in colonic tissues back to normal. In a damaged colonic epithelial model utilizing Caco-2 cells stimulated with TNF-α, EcN-Elafin efficiently downregulated the activation level of NF-κB signaling. EcN-Elafin was also found to have restored the dysbiosis in gut caused by DSS administration. Moreover, EcN-Elafin significantly enhanced the concentrations of butyrate and valerate in the gut lumen. Thus, our findings demonstrated that EcN-Elafin enhanced the colonic epithelial barrier, promoted the resolution of inflammation, modulated the gut microbiota, and elevated concentrations of short-chain fatty acids (SCFAs) in the gut. EcN-Elafin may be a potential therapeutic method for IBD.
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Affiliation(s)
- Guigen Teng
- Departments of Gastroenterology, Peking University First Hospital, Beijing, China
| | - Zilin Liu
- Departments of Gastroenterology, Peking University First Hospital, Beijing, China
| | - Yun Liu
- Departments of Gastroenterology, Peking University First Hospital, Beijing, China
| | - Ting Wu
- Departments of Gastroenterology, Peking University First Hospital, Beijing, China
| | - Yun Dai
- Departments of Gastroenterology, Peking University First Hospital, Beijing, China
| | - Huahong Wang
- Departments of Gastroenterology, Peking University First Hospital, Beijing, China
| | - Weihong Wang
- Departments of Gastroenterology, Peking University First Hospital, Beijing, China
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Chen D, Zeng R, Teng G, Cai C, Pan T, Tu H, Lin H, Du Q, Wang H, Chen Y. Menstrual blood-derived mesenchymal stem cells attenuate inflammation and improve the mortality of acute liver failure combining with A2AR agonist in mice. J Gastroenterol Hepatol 2021; 36:2619-2627. [PMID: 33729623 PMCID: PMC8518829 DOI: 10.1111/jgh.15493] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 03/06/2021] [Accepted: 03/08/2021] [Indexed: 01/07/2023]
Abstract
BACKGROUND AND AIM Acute liver failure (ALF) poses a serious public health issue. The menstrual blood-derived mesenchymal stem cells (MenSCs) have been applied to cure various liver-related diseases. However, the efficacy and mechanism are far from clear. This study aims to explore the efficacy and potential mechanism of MenSCs to cure ALF. METHODS We investigate the potential mechanism of MenSCs on the ALF in vitro and in vivo. A2A adenosine receptor (A2AR) activation was investigated as the potential reinforcer for MenSCs treatment. Lipid polysaccharide/d-galactosamine (d-GalN) was employed to induce ALF. Diverse techniques were used to measure the inflammatory cytokines and key signaling molecules. Hematoxylin-eosin stain and aminotransaminases were applied to evaluate the liver injury. Flow cytometry was employed to assess the T cells. RESULTS The MenSCs can decrease the lipid polysaccharide-induced inflammatory cytokine elevation and related signaling molecules in ALF, including TLR4, phosphorylated-NF-kBp65 (p-NF-kBp65), PI3K, and p-AKT, p-mTOR and p-IKK in vitro. Moreover, MenSCs also can significantly reverse the liver injury, inflammatory cytokines elevation and related signaling molecules increase, and Treg/Th17 ratio decrease in vivo. In addition, MenSCs plus A2AR agonist can enhance the above changes. CONCLUSIONS The MenSCs can attenuate the ALF-induced liver injury via inhibition of TLR4-mediated PI3K/Akt/mTOR/IKK signaling. Then, this inhibits the p-NF-κBp65 translocate into nuclear, which causes a decrease of inflammatory cytokines release. Moreover, A2AR agonist can play a synergic role with MenSCs and enhance the above-mentioned effects.
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Affiliation(s)
- Dazhi Chen
- Department of GastroenterologyPeking University First HospitalBeijingChina
| | - Ruichao Zeng
- Department of Oncological SurgeryThe First Affiliated Hospital of Wenzhou Medical UniversityWenzhouChina,Precision and Systems BiomedicineQIMR Berghofer Medical Research InstituteBrisbaneQueenslandAustralia,Faculty of MedicineThe University of QueenslandWoolloongabbaQueenslandAustralia
| | - Guigen Teng
- Department of GastroenterologyPeking University First HospitalBeijingChina
| | - Chao Cai
- Department of Infectious Diseases, Wenzhou Key Laboratory of HepatologyThe First Affiliated Hospital of Wenzhou Medical University, Hepatology Institute of Wenzhou Medical UniversityWenzhouChina
| | - Tongtong Pan
- Department of Infectious Diseases, Wenzhou Key Laboratory of HepatologyThe First Affiliated Hospital of Wenzhou Medical University, Hepatology Institute of Wenzhou Medical UniversityWenzhouChina
| | - Hanxiao Tu
- Department of Infectious Diseases, Wenzhou Key Laboratory of HepatologyThe First Affiliated Hospital of Wenzhou Medical University, Hepatology Institute of Wenzhou Medical UniversityWenzhouChina
| | - Hongwei Lin
- Department of Infectious Diseases, Wenzhou Key Laboratory of HepatologyThe First Affiliated Hospital of Wenzhou Medical University, Hepatology Institute of Wenzhou Medical UniversityWenzhouChina
| | - Qingjing Du
- Department of Infectious Diseases, Wenzhou Key Laboratory of HepatologyThe First Affiliated Hospital of Wenzhou Medical University, Hepatology Institute of Wenzhou Medical UniversityWenzhouChina
| | - Huahong Wang
- Department of GastroenterologyPeking University First HospitalBeijingChina
| | - Yongping Chen
- Department of Infectious Diseases, Wenzhou Key Laboratory of HepatologyThe First Affiliated Hospital of Wenzhou Medical University, Hepatology Institute of Wenzhou Medical UniversityWenzhouChina
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11
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Duo L, Wu T, Ke Z, Hu L, Wang C, Teng G, Zhang W, Wang W, Ge Q, Yang Y, Dai Y. Gain of Function of Ion Channel TRPV1 Exacerbates Experimental Colitis by Promoting Dendritic Cell Activation. Mol Ther Nucleic Acids 2020; 22:924-936. [PMID: 33251043 PMCID: PMC7666365 DOI: 10.1016/j.omtn.2020.10.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Accepted: 10/09/2020] [Indexed: 01/07/2023]
Abstract
Dysregulated mucosal immunity plays an essential role in the pathophysiology of inflammatory bowel disease (IBD). Transient receptor potential vanilloid 1 (TRPV1) is a Ca2+-permeable ion channel that is implicated in modulating immune responses. However, its role in the pathogenesis of intestinal inflammation remains elusive. Here, we found that TRPV1 gain of function significantly increased the susceptibility of mice to experimental colitis, and that was associated with excessive recruitment of dendritic cells and enhanced Th17 immune responses in the lamina propria of colon. TRPV1 gain of function promoted dendritic cell activation and cytokine production upon inflammatory stimuli, and consequently enhanced dendritic cell-mediated Th17 cell differentiation. Further mechanistic studies showed that TRPV1 gain of function in dendritic cells enhanced activation of calcineurin/nuclear factor of activated T cells (NFATc2) signaling induced by inflammatory stimuli. Moreover, in patients with IBD, TRPV1 expression was increased in lamina propria cells of inflamed colon compared with healthy controls. Our findings identify an important role for TRPV1 in modulating dendritic cell activation and sustaining Th17 responses to inflammatory stimuli, which suggest that TRPV1 might be a potential therapeutic target in controlling mucosal immunity and IBD.
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Affiliation(s)
- Lina Duo
- Department of Dermatology, Peking University First Hospital, Beijing Key Laboratory of Molecular Diagnosis on Dermatoses, Beijing, China.,Department of Dermatology, Chengdu Integrated TCM & Western Medicine Hospital, Chengdu, China.,Peking-Tsinghua Center for Life Sciences, Beijing, China.,Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, China
| | - Ting Wu
- Department of Gastroenterology, Peking University First Hospital, Beijing, China
| | - Ziliang Ke
- Department of Gastroenterology, Peking University First Hospital, Beijing, China
| | - Linghan Hu
- Department of Dermatology, Peking University First Hospital, Beijing Key Laboratory of Molecular Diagnosis on Dermatoses, Beijing, China.,Peking-Tsinghua Center for Life Sciences, Beijing, China.,Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, China
| | - Chaohui Wang
- Department of Gastroenterology, Peking University First Hospital, Beijing, China
| | - Guigen Teng
- Department of Gastroenterology, Peking University First Hospital, Beijing, China
| | - Wei Zhang
- Department of Gastroenterology, Peking University First Hospital, Beijing, China
| | - Weihong Wang
- Department of Gastroenterology, Peking University First Hospital, Beijing, China
| | - Qing Ge
- Department of Immunology, Peking University Health Science Center, Beijing, China
| | - Yong Yang
- Department of Dermatology, Peking University First Hospital, Beijing Key Laboratory of Molecular Diagnosis on Dermatoses, Beijing, China.,Peking-Tsinghua Center for Life Sciences, Beijing, China.,Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing, Jiangsu, China
| | - Yun Dai
- Department of Gastroenterology, Peking University First Hospital, Beijing, China
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12
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Teng G, Liu Y, Wu T, Wang W, Wang H, Hu F. Efficacy of Sucralfate-Combined Quadruple Therapy on Gastric Mucosal Injury Induced by Helicobacter pylori and Its Effect on Gastrointestinal Flora. Biomed Res Int 2020; 2020:4936318. [PMID: 32934960 PMCID: PMC7479470 DOI: 10.1155/2020/4936318] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Revised: 07/15/2020] [Accepted: 07/30/2020] [Indexed: 12/23/2022]
Abstract
BACKGROUND This study explored the therapeutic efficacy of standard triple therapy combined with sucralfate suspension gel as well as the mechanisms of action in mouse models of H. pylori infection. MATERIALS AND METHODS C57BL/6J mice were randomly divided into 5 groups: NC (natural control), HP (H. pylori infection), RAC (rabeprazole, amoxicillin, and clarithromycin), RACS (RAC and sucralfate suspension gel), and RACB (RAC and bismuth potassium citrate). HE staining and electron microscopy were performed to estimate histological and ultrastructural damages. The IL-8, IL-10, and TNF-α of gastric antrum tissues were measured by immunohistochemistry and qRT-PCR. ZO-1 and Occludin were also detected with immunohistochemistry. The genomes of gastric and fecal microbiota were sequenced. RESULTS The eradication rate of H. pylori in the RACS group was higher than the RAC group. RACS therapy had protective effects on H. pylori-induced histological and ultrastructural damages, which were superior to the RAC group. RACS therapy reduced the protein and mRNA levels of IL-8 compared with the RAC group. The expression of Occludin in the RACS group was significantly higher than that of the RAC group. The composition of gastric and fecal microbiota for RACS was similar to the RACB group according to PCA. CONCLUSIONS The RACS regimen eradicated H. pylori infection effectively and showed RACS had protective effects against H. pylori-induced histological and ultrastructural damage. The mechanisms of RACS effects included decreasing IL-8, enhancing Occludin, and transforming gastric microbiota. Moreover, RACS and RACB have a similar effect on gastrointestinal flora.
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Affiliation(s)
- Guigen Teng
- Departments of Gastroenterology, Peking University First Hospital, Beijing, China
| | - Yun Liu
- Department of Gastroenterology, Peking University People's Hospital, Beijing, China
| | - Ting Wu
- Departments of Gastroenterology, Peking University First Hospital, Beijing, China
| | - Weihong Wang
- Departments of Gastroenterology, Peking University First Hospital, Beijing, China
| | - Huahong Wang
- Departments of Gastroenterology, Peking University First Hospital, Beijing, China
| | - Fulian Hu
- Departments of Gastroenterology, Peking University First Hospital, Beijing, China
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13
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Li Z, Xu F, Zhang Z, Lin X, Teng G, Zang F, Liu S. Morphologic Evolution and Coordinated Development of the Fetal Lateral Ventricles in the Second and Third Trimesters. AJNR Am J Neuroradiol 2019; 40:718-725. [PMID: 30894357 DOI: 10.3174/ajnr.a6013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2018] [Accepted: 02/13/2019] [Indexed: 12/15/2022]
Abstract
BACKGROUND AND PURPOSE Few investigators have studied the lateral ventricle formation related to the development of the calcarine sulcus. Our purpose was to establish the relationship between the lateral ventricles and the calcarine sulcus in the second and third trimesters. MATERIALS AND METHODS Fetal brain MR imaging (3T and 7T) was performed in 84 fetuses at 14-35 gestational weeks. The lateral ventricles and calcarine sulcus were 3D-reconstructed, and quantitative measurements were obtained. RESULTS The lateral ventricle volume decreases slowly at 14-23 gestational weeks and then increases rapidly at 24-35 gestational weeks. The depth and length of the calcarine sulcus develop with the increase in gestational weeks, leading to be squeezed in the lateral ventricle posterior horn. A linear correlation occurs between the calcarine sulcus length and posterior horn length: Right-length = 2.4204 (LPH) - 27.5706, Left-length = 2.0939 (LPH) - 23.4099. CONCLUSIONS The variation of lateral ventricle volume evolved from a slow to rapid increase at 14-35 gestational weeks. The shrinkage in the lateral ventricle posterior horn is accompanied by the development of the calcarine sulcus, resulting in a better linear correlation between the calcarine sulcus length and the posterior horn length. The present results are valuable in elucidating the evolution of lateral ventricle development and provide clues for the diagnosis of lateral ventricle abnormalities in the prenatal examination.
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Affiliation(s)
- Z Li
- From the Research Center for Sectional and Imaging Anatomy (Z.L., F.X., Z.Z., X.L., S.L.), Institute of Brain and Brain-Inspired Science, Shandong University Cheeloo Medical College, Shandong, China
| | - F Xu
- From the Research Center for Sectional and Imaging Anatomy (Z.L., F.X., Z.Z., X.L., S.L.), Institute of Brain and Brain-Inspired Science, Shandong University Cheeloo Medical College, Shandong, China
| | - Z Zhang
- From the Research Center for Sectional and Imaging Anatomy (Z.L., F.X., Z.Z., X.L., S.L.), Institute of Brain and Brain-Inspired Science, Shandong University Cheeloo Medical College, Shandong, China.,Department of Medical Imaging (Z.Z., X.L.), Provincial Hospital Affiliated with Shandong University, Shandong, China
| | - X Lin
- From the Research Center for Sectional and Imaging Anatomy (Z.L., F.X., Z.Z., X.L., S.L.), Institute of Brain and Brain-Inspired Science, Shandong University Cheeloo Medical College, Shandong, China.,Department of Medical Imaging (Z.Z., X.L.), Provincial Hospital Affiliated with Shandong University, Shandong, China.,Department of MR Imaging (X.L.), Shandong Medical Imaging Research Institute, Shandong, China
| | - G Teng
- Department of Radiology (G.T., F.Z.), Zhong Da Hospital, Southeast University School of Clinical Medicine, Jiangsu, China
| | - F Zang
- Department of Radiology (G.T., F.Z.), Zhong Da Hospital, Southeast University School of Clinical Medicine, Jiangsu, China
| | - S Liu
- From the Research Center for Sectional and Imaging Anatomy (Z.L., F.X., Z.Z., X.L., S.L.), Institute of Brain and Brain-Inspired Science, Shandong University Cheeloo Medical College, Shandong, China
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14
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Xu S, Ni C, Chen L, Zhu H, Zhong B, Teng G. 4:21 PM Abstract No. 170 Prognostic predictors for the combination therapy of percutaneous catheter drainage and antibiotics in pyogenic liver abscess patients. J Vasc Interv Radiol 2018. [DOI: 10.1016/j.jvir.2018.01.791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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15
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Zhong B, Ni C, Chen S, Teng G. 3:45 PM Abstract No. 38 Stratification and prognosis for portal vein invaded hepatocellular carcinoma treated with transarterial chemoembolization monotherapy. J Vasc Interv Radiol 2018. [DOI: 10.1016/j.jvir.2018.01.046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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16
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Teng G, Dai Y, Chu Y, Li J, Zhang H, Wu T, Shuai X, Wang W. Helicobacter pylori induces caudal-type homeobox protein 2 and cyclooxygenase 2 expression by modulating microRNAs in esophageal epithelial cells. Cancer Sci 2018; 109:297-307. [PMID: 29215765 PMCID: PMC5797820 DOI: 10.1111/cas.13462] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Revised: 11/02/2017] [Accepted: 11/16/2017] [Indexed: 12/17/2022] Open
Abstract
Dysregulation of microRNAs (miRNAs) has been linked to virulence factors of Helicobacter pylori. The role of H. pylori in esophageal disease has not been clearly defined. We previously reported that H. pylori esophageal colonization promotes the incidence of Barrett's esophagus and esophageal adenocarcinoma in vivo. Here, we studied the direct effects of H. pylori on the transformation of esophageal epithelial cells, with particular focus on whether H. pylori exerts its effects by modulating miRNAs and their downstream target genes. The normal human esophageal cell line HET‐1A was chronically exposed to H. pylori extract and/or acidified deoxycholic acid for up to 36 weeks. The miRNA profiles of the esophageal epithelial cells associated with H. pylori infection were determined by microarray analysis. We found that chronic H. pylori exposure promoted acidified deoxycholic acid‐induced morphological changes in HET‐1A cells, along with aberrant overexpression of intestinal metaplasia markers and tumorigenic factors, including caudal‐type homeobox protein 2 (CDX2), mucin 2, and cyclooxygenase 2 (COX2). Helicobacter pylori modified the miRNA profiles of esophageal epithelial cells, particularly aberrant silencing of miR‐212‐3p and miR‐361‐3p. Moreover, in biopsies from Barrett's esophagus patients, esophageal H. pylori colonization was associated with a significant decrease in miR‐212‐3p and miR‐361‐3p expression. Furthermore, we identified COX2 as a target of miR‐212‐3p, and CDX2 as a target of miR‐361‐3p. Helicobacter pylori infection of esophageal epithelial cells was associated with miRNA‐mediated upregulation of oncoprotein CDX2 and COX2. Our observations provide new evidence about the molecular mechanisms underlying the association between H. pylori infection and esophageal carcinogenesis.
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Affiliation(s)
- Guigen Teng
- Department of Gastroenterology, Peking University First Hospital, Beijing, China
| | - Yun Dai
- Department of Gastroenterology, Peking University First Hospital, Beijing, China
| | - Yunxiang Chu
- Department of Gastroenterology, Peking University First Hospital, Beijing, China.,Department of Gastroenterology, China Meitan General Hospital, Beijing, China
| | - Jing Li
- Department of Gastroenterology, Peking University First Hospital, Beijing, China
| | - Hongchen Zhang
- Department of Gastroenterology, Peking University First Hospital, Beijing, China
| | - Ting Wu
- Department of Gastroenterology, Peking University First Hospital, Beijing, China
| | - Xiaowei Shuai
- Department of Gastroenterology, Peking University First Hospital, Beijing, China
| | - Weihong Wang
- Department of Gastroenterology, Peking University First Hospital, Beijing, China
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Wu T, Dai Y, Wang W, Teng G, Jiao H, Shuai X, Zhang R, Zhao P, Qiao L. Macrophage targeting contributes to the inhibitory effects of embelin on colitis-associated cancer. Oncotarget 2017; 7:19548-58. [PMID: 26799669 PMCID: PMC4991400 DOI: 10.18632/oncotarget.6969] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Accepted: 01/06/2016] [Indexed: 02/06/2023] Open
Abstract
Macrophages are a major component of inflammatory and tumor microenvironment. We previously reported that embelin suppresses colitis-associated tumorigenesis. Here, the role of macrophage targeting in the anti-inflammatory and anti-tumor properties of embelin was investigated. By using colitis-associated cancer (CAC) model, we demonstrated that embelin significantly depleted colon macrophages by blocking their recruitment. Moreover, embelin attenuated M2-like polarization of macrophages within the tumor microenvironment and eliminated their tumor-promoting functions during the development of CAC. Embelin potently inhibited NF-κB signaling in macrophages and decreased the production of key pro-inflammatory cytokines and tumorigenic factors involved in CAC, such as TNFα, IL-6 and COX-2. In addition, embelin directly reduced the polarization of M2 macrophages in vitro even in the presence of Th2 cytokines. These results suggested that targeting macrophages is, at least in part, responsible for the anti-tumor activity of embelin in CAC. Our observations strengthen the rationale for future validation of embelin in the prevention and treatment of CAC
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Affiliation(s)
- Ting Wu
- Department of Gastroenterology, Peking University First Hospital, Beijing 100034, China
| | - Yun Dai
- Department of Gastroenterology, Peking University First Hospital, Beijing 100034, China
| | - Weihong Wang
- Department of Gastroenterology, Peking University First Hospital, Beijing 100034, China
| | - Guigen Teng
- Department of Gastroenterology, Peking University First Hospital, Beijing 100034, China
| | - Hongmei Jiao
- Department of Gerontology, Peking University First Hospital, Beijing 100034, China
| | - Xiaowei Shuai
- Department of Gastroenterology, Peking University First Hospital, Beijing 100034, China
| | - Rongxin Zhang
- Research Center of Basic Medical Sciences and Department of Immunology, Key Laboratory of Immune Microenvironment and Diseases of Educational Ministry of China, Tianjin Medical University, Tianjin 300070, China
| | - Peng Zhao
- Department of Colorectal Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin 300060, China
| | - Liang Qiao
- Storr Liver Centre, The Westmead Institute for Medical Research, The University of Sydney at Westmead Hospital, Westmead, NSW 2145, Australia
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Svystonyuk D, Turnbull J, Teng G, Belke D, Guzzardi D, Park D, Kang S, Fedak P. ACELLULAR EXTRACELLULAR MATRIX SCAFFOLD REPROGRAMS CARDIAC FIBROBLASTS AND PROMOTES ADAPTIVE CARDIAC REMODELING AND REPAIR. Can J Cardiol 2017. [DOI: 10.1016/j.cjca.2017.07.485] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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Kang S, Verma S, Teng G, Belke D, Svystonyuk D, Guzzardi D, Park D, Turnbull J, Malik G, Fedak P. DIRECT EFFECTS OF EMPAGLIFLOZIN ON EXTRACELLULAR MATRIX REMODELING IN HUMAN CARDIAC FIBROBLASTS: NOVEL TRANSLATIONAL CLUES TO EMPA-REG OUTCOME. Can J Cardiol 2017. [DOI: 10.1016/j.cjca.2017.07.330] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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Guzzardi D, Teng G, Svystonyuk D, Kang S, Park D, Belke D, Turnbull J, Fedak P. FLUOROQUINOLONE INDUCES HUMAN AORTIC FIBROBLAST-MEDIATED EXTRACELLULAR MATRIX DYSREGULATION. Can J Cardiol 2017. [DOI: 10.1016/j.cjca.2017.07.092] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Pan T, Zhu H, Guo J, Teng G. The experiment study of renal denervation in treatment of type 2 diabetes mellitus. J Vasc Interv Radiol 2017. [DOI: 10.1016/j.jvir.2016.12.950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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22
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Pan T, Zhu H, He S, Guo J, Teng G. Correlation of height restoration and kyphosis with clinical outcome after percutaneous vertebroplasty in patients with vertebral compression fractures. J Vasc Interv Radiol 2017. [DOI: 10.1016/j.jvir.2016.12.642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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23
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Dong J, Teng G, Wei T, Gao W, Wang H. Methodological Quality Assessment of Meta-Analyses and Systematic Reviews of Probiotics in Inflammatory Bowel Disease and Pouchitis. PLoS One 2016; 11:e0168785. [PMID: 28005973 PMCID: PMC5179087 DOI: 10.1371/journal.pone.0168785] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2016] [Accepted: 12/06/2016] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Probiotics are widely used for the induction and maintenance of remission in inflammatory bowel disease (IBD) and pouchitis. There are a large number of meta-analyses (MAs)/ systematic reviews (SRs) on this subject, the methodological quality of which has not been evaluated. OBJECTIVES This study aimed to evaluate the methodological quality of and summarize the evidence obtained from MAs/SRs of probiotic treatments for IBD and pouchitis patients. METHODS The PubMed, EMBASE, Cochrane Library and China National Knowledge Infrastructure (CNKI) databases were searched to identify Chinese and English language MAs/SRs of the use of probiotics for IBD and pouchitis. The Assessment of Multiple Systematic Reviews (AMSTAR) scale was used to assess the methodological quality of the studies. RESULTS A total of 36 MAs/SRs were evaluated. The AMSTAR scores of the included studies ranged from 1 to 10, and the average score was 5.81. According to the Canadian Agency for Drugs and Technologies in Health, 4 articles were classified as high quality, 24 articles were classified as moderate quality, and 8 articles were classified as low quality. Most of the MAs/SRs suggested that probiotics had potential benefits for patients with ulcerative colitis (UC), but failed to show effectiveness in the induction and maintenance of remission in Crohn's disease (CD). The probiotic preparation VSL#3 may play a beneficial role in pouchitis. CONCLUSION The overall methodological quality of the current MAs/SRs in the field of probiotics for IBD and pouchitis was found to be low to moderate. More MAs/SRs of high quality are required to support using probiotics to treat IBD and pouchitis.
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Affiliation(s)
- Jinpei Dong
- Department of Gastroenterology, Peking University First Hospital, Peking University, Beijing, China
| | - Guigen Teng
- Department of Gastroenterology, Peking University First Hospital, Peking University, Beijing, China
| | - Tiantong Wei
- Department of Gastroenterology, Peking University First Hospital, Peking University, Beijing, China
| | - Wen Gao
- Department of Gastroenterology, Peking University First Hospital, Peking University, Beijing, China
| | - Huahong Wang
- Department of Gastroenterology, Peking University First Hospital, Peking University, Beijing, China
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Ding W, Teng G, Xie B. Risk factors of long-term aortic dilatation after endovascular treatment for DeBakey IIIb aortic dissection. J Vasc Interv Radiol 2016. [DOI: 10.1016/j.jvir.2015.12.304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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Mewhort H, Turnbull J, Teng G, Belke D, Svystonyuk D, Guzzardi D, Duff H, Fedak P. SURGICAL APPLICATION OF A NOVEL BIOMATERIAL ATTENUATES POST-MI REMODELING AND HEART FAILURE: IMPACT OF INTERVENTION TIMING RELATIVE TO INFARCT STAGE ON FUNCTIONAL RECOVERY. Can J Cardiol 2015. [DOI: 10.1016/j.cjca.2015.07.170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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26
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Svystonyuk D, Malik G, Mewhort H, Guzzardi D, Park D, Belke D, Teng G, Fedak P. SIS-ECM BIOMATERIAL DECREASES HUMAN CARDIAC MYOFIBROBLAST ACTIVATION AND ATTENUATES LOCAL MATRIX REMODELING. Can J Cardiol 2015. [DOI: 10.1016/j.cjca.2015.07.412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Bai Z, Zhang F, shi Y, Qiu L, Wang J, Teng G, Yang X. Radiofrequency hyperthermia (RFH)-enhanced chemotherapy of pancreatic cancers monitored by dual-modality imaging. J Vasc Interv Radiol 2015. [DOI: 10.1016/j.jvir.2014.12.354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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28
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Teng G, Duff H, Belke D, Turnbull J, Meijndert C, Chen Y, O'Brien E, Fedak P. TETRANDRINE REVERSES HUMAN CARDIAC MYOFIBROBLAST ACTIVATION AND MYOCARDIAL FIBROSIS. Can J Cardiol 2014. [DOI: 10.1016/j.cjca.2014.07.159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Svystonyuk D, Ngu J, Mewhort H, Guzzardi D, Lipon B, Park D, Teng G, Belke D, Fedak P. FIBROBLAST GROWTH FACTOR (FGF-2) PREVENTS HUMAN CARDIAC FIBROBLAST-MEDIATED EXTRACELLULAR MATRIX REMODELING. Can J Cardiol 2014. [DOI: 10.1016/j.cjca.2014.07.227] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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30
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Xue X, Wang X, Liu Y, Teng G, Wang Y, Zang X, Wang K, Zhang J, Xu Y, Wang J, Pan L. SchA-p85-FAK complex dictates isoform-specific activation of Akt2 and subsequent PCBP1-mediated post-transcriptional regulation of TGFβ-mediated epithelial to mesenchymal transition in human lung cancer cell line A549. Tumour Biol 2014; 35:7853-9. [PMID: 24819169 DOI: 10.1007/s13277-014-1982-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Accepted: 03/11/2014] [Indexed: 01/22/2023] Open
Abstract
A post-transcriptional pathway by which TGF-β modulates expression of specific proteins, Disabled-2 (Dab2) and Interleukin-like EMT Inducer (ILEI), inherent to epithelial to mesenchymal transition (EMT) in murine epithelial cells through Akt2-mediated phosphorylation of poly r(C) binding protein (PCBP1), has been previously elucidated. The aims of the current study were to determine if the same mechanism is operative in the non-small cell lung cancer (NSCLC) cell line, A549, and to delineate the underlying mechanism. Steady-state transcript and protein expression levels of Dab2 and ILEI were examined in A549 cells treated with TGF-β for up to 48 h. Induction of translational de-repression in this model was quantified by polysomal fractionation followed by qRT-PCR. The underlying mechanism of isoform-specific activation of Akt2 was elucidated through a combination of co-immunoprecipitation studies. TGF-β induced EMT in A549 cells concomitant with translational upregulation of Dab2 and ILEI proteins through isoform-specific activation of Akt2 followed by phosphorylation of PCBP1 at serine-43. Our experiments further elucidated that the adaptor protein SchA is phosphorylated at tyrosine residues following TGF-β treatment, which initiated a signaling cascade resulting in the sequential recruitment of p85 subunit of PI3K and focal adhesion kinase (FAK). The SchA-FAK-p85 complex subsequently selectively recruited and activated Akt2, not Akt1. Inhibition of the p85 subunit through phosphorylated 1257 peptide completely attenuated EMT in these cells. We have defined the underlying mechanism responsible for isoform-specific recruitment and activation of Akt2, not Akt1, during TGF-β-mediated EMT in A549 cells. Inhibition of the formation of this complex thus represents an important and novel therapeutic target in metastatic lung carcinoma.
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Affiliation(s)
- Xinying Xue
- The Department of Special Medical Treatment-Respiratory Disease, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
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Dai Y, Wilson G, Huang B, Peng M, Teng G, Zhang D, Zhang R, Ebert MPA, Chen J, Wong BCY, Chan KW, George J, Qiao L. Silencing of Jagged1 inhibits cell growth and invasion in colorectal cancer. Cell Death Dis 2014; 5:e1170. [PMID: 24722295 PMCID: PMC5424114 DOI: 10.1038/cddis.2014.137] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2014] [Revised: 02/18/2014] [Accepted: 02/26/2014] [Indexed: 01/09/2023]
Abstract
Dysregulated Notch signaling has a critical role in the tumorigenesis. Jagged1, a Notch ligand, is overexpressed in various human cancers. Recent studies revealed the involvement of Jagged1 in colorectal cancer (CRC) development. These basic studies provide a promising potential for inhibition of the Notch pathway for the treatment of CRC. Herein, we aimed to investigate the consequences of targeting Jagged1 using shRNA on CRC both in vitro and in vivo to test their potential to inhibit this key element for CRC treatment. We found that downregulation of Jagged1 with lentiviral Jagged1-shRNA resulted in decreased colon cancer cell viability in vitro, most likely mediated through reduced cell proliferation. Importantly, Jagged1 knockdown induced G0/G1 phase cell cycle arrest, with reduced Cyclin D1, Cyclin E and c-Myc expression. Silencing of Jagged1 reduced the migration and invasive capacity of the colon cancer cells in vitro. Furthermore, colon cancer cells with knockdown of Jagged1 had much slower growth rate than control cells in a xenograft mouse model in vivo, with a marked downregulation of cell proliferation markers (PCNA, Ki-67, and c-Myc) and metastasis markers (MMP-2 and MMP-9). These findings rationalize a mechanistic approach to CRC treatment based on Jagged1-targeted therapeutic development.
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Affiliation(s)
- Y Dai
- Department of Gastroenterology, Peking University First Hospital, Beijing, China
| | - G Wilson
- Storr Liver Unit, Westmead Millennium Institute, Department of Medicine and Western Clinical School, The University of Sydney, Westmead, NSW, Australia
| | - B Huang
- Research Center of Basic Medical Sciences and Department of Immunology, Key Laboratory of Immune Microenvironment and Diseases of Educational Ministry of China, Tianjin Medical University, Tianjin, China
| | - M Peng
- Research Center of Basic Medical Sciences and Department of Immunology, Key Laboratory of Immune Microenvironment and Diseases of Educational Ministry of China, Tianjin Medical University, Tianjin, China
| | - G Teng
- Department of Gastroenterology, Peking University First Hospital, Beijing, China
| | - D Zhang
- Research Center of Basic Medical Sciences and Department of Immunology, Key Laboratory of Immune Microenvironment and Diseases of Educational Ministry of China, Tianjin Medical University, Tianjin, China
| | - R Zhang
- Research Center of Basic Medical Sciences and Department of Immunology, Key Laboratory of Immune Microenvironment and Diseases of Educational Ministry of China, Tianjin Medical University, Tianjin, China
| | - M P A Ebert
- Department of Medicine II, Klinikum Rechts der Isar, Technical University, Munich, Germany
| | - J Chen
- School of Biomedical Sciences, The University of Queensland, Brisbane, QLD, Australia
| | - B C Y Wong
- Departments of Medicine, The University of Hong Kong, Pokfulam, Hong Kong
| | - K W Chan
- Departments of Pathology, The University of Hong Kong, Pokfulam, Hong Kong
| | - J George
- Storr Liver Unit, Westmead Millennium Institute, Department of Medicine and Western Clinical School, The University of Sydney, Westmead, NSW, Australia
| | - L Qiao
- Storr Liver Unit, Westmead Millennium Institute, Department of Medicine and Western Clinical School, The University of Sydney, Westmead, NSW, Australia
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Dai Y, Jiao H, Teng G, Wang W, Zhang R, Wang Y, Hebbard L, George J, Qiao L. Embelin Reduces Colitis-Associated Tumorigenesis through Limiting IL-6/STAT3 Signaling. Mol Cancer Ther 2014; 13:1206-16. [PMID: 24651526 DOI: 10.1158/1535-7163.mct-13-0378] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Yun Dai
- Authors' Affiliations: Departments of Gastroenterology, Gerontology, and Pathology, Peking University First Hospital, Beijing; Research Center of Basic Medical Sciences and Department of Immunology, Key Laboratory of Immune Microenvironment and Diseases of Educational Ministry of China, Tianjin Medical University, Tianjin, China; and Storr Liver Unit, Westmead Millennium Institute, the University of Sydney at the Westmead Hospital, Westmead, New South Wales, Australia
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Wang S, Wang W, Chu Y, Teng G, Hu F. [Non-bismuth quadruple therapy versus standard triple therapy for Helicobacter pylori eradication: a randomized controlled study]. Zhonghua Yi Xue Za Zhi 2014; 94:576-579. [PMID: 24762684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
OBJECTIVE To compare the efficacies of non-bismuth quadruple therapy for 7 days versus standard triple therapy for 7 or 10 days in initial treatment of Helicobacter pylori (H.pylori) . METHODS A randomized, open-labeled, controlled trial comparing non-bismuth quadruple therapy with standard triple therapy was performed at Peking University First Hospital from August 2010 to July 2012. A total of 246 patients with a diagnosis of H.pylori infection by (13)C-urea breath test and receiving no eradication therapy were randomly divided into non-bismuth quadruple therapy and standard triple therapy for 7 or 10 days. There were 110 males and 136 females with an age range of 18-75 years. Among them, 81 patients received non-bismuth quadruple therapy (esomeprazole 20 mg, amoxicillin 1 000 mg, clarithromycin 500 mg and tinidazole 500 mg given twice daily for 7 days); 82 standard triple therapy (esomeprazole 20 mg, amoxicillin 1 000 mg and clarithromycin 500 mg given twice daily) for 7 days and 83 standard triple therapy for 10 days. The efficacies were examined at Week 4 post-therapy by (13)C-urea breath test. The incidence of adverse drug reactions was recorded. RESULTS Among them, 242 patients completed the follow-up. The eradication rates for non-bismuth quadruple therapy and standard triple therapy for 7 or 10 days were 91.4% (74/81), 79.3% (65/82) and 79.5% (66/83) as determined by intention-to-treat analysis (ITT). The eradication rates were 92.5% (74/80), 81.3% (65/80) and 80.5% (66/82) respectively as determined by per-protocol analysis (PP).Non-bismuth quadruple therapy was superior to standard triple therapy for 7 days (ITT analysis P = 0.029, PP analysis P = 0.035) and 10 days (ITT analysis P = 0.032, PP analysis P = 0.026). The differences for the eradication rates between standard triple therapy for 7 days and for 10 days were insignificant (ITT analysis P = 0.968, PP analysis P = 0.902): Adverse reaction rates for non-bismuth quadruple therapy (8.8%, 7/80) and standard triple therapy for 7 days (7.5%, 6/80) and 10 days (9.8%, 8/82) were not significantly different (P = 0.872). CONCLUSION Non-bismuth quadruple therapy for 7 days is both effective and safe for the first-line eradication of H.pylori.
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Affiliation(s)
- Shujun Wang
- Department of Gastroenterology, Peking University First Hospital, Beijing 100034, China
| | - Weihong Wang
- Department of Gastroenterology, Peking University First Hospital, Beijing 100034, China.
| | - Yunxiang Chu
- Department of Gastroenterology, Peking University First Hospital, Beijing 100034, China
| | - Guigen Teng
- Department of Gastroenterology, Peking University First Hospital, Beijing 100034, China
| | - Fulian Hu
- Department of Gastroenterology, Peking University First Hospital, Beijing 100034, China
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Zan L, Zhang X, Xi Y, Wu H, Song Y, Teng G, Li H, Qi J, Wang J. Src regulates angiogenic factors and vascular permeability after focal cerebral ischemia-reperfusion. Neuroscience 2014; 262:118-28. [PMID: 24412374 DOI: 10.1016/j.neuroscience.2013.12.060] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2013] [Revised: 12/26/2013] [Accepted: 12/28/2013] [Indexed: 11/26/2022]
Abstract
Developing new strategies to treat cerebral ischemic-reperfusion injury will require a better understanding of the mechanisms that underlie vascular permeability. In this study we examined the temporal expression of Src and angiogenic factors in rat brain after focal cerebral ischemia and reperfusion and analyzed the relationships among those factors. We also investigated the effect of Src inhibitor PP1 (4-amino-5-(4-methylphenyl)-7-(t-butyl)pyrazolo[3,4-d]pyrimidine) in ischemic reperfusion. Rats were subjected to middle cerebral artery occlusion for 90 min followed by reperfusion with or without PP1 treatment. Src mRNA increased at 3h after reperfusion and then gradually declined. Phosphorylation of Src at Y418 displayed a biphasic increase. Phosphorylation increased as early as 3h and peaked at 6h; after decreasing, it peaked again at 3-7 days. Increases in Src mRNA and phosphorylation correlated positively with levels of vascular endothelial growth factor (VEGF) and angiopoietin-2 (Ang-2), and negatively with levels of angiopoietin-1 (Ang-1) and zonula occludens-1 (ZO-1). Changes in the expression of these factors correlated with the progress of vascular permeability, especially early after reperfusion. Hence, dynamic temporal changes in Src Y418 phosphorylation may modulate vascular permeability after cerebral ischemia and reperfusion. PP1 effectively decreased Src Y418 phosphorylation and the expression of VEGF and Ang-2 and increased the expression of Ang-1 and ZO-1. It also reduced cerebral infarct size and neurologic dysfunction. Therefore, Src may represent a new therapeutic target for reducing tissue damage caused by increased vascular permeability.
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Affiliation(s)
- L Zan
- Department of Pathology, Shanxi Cancer Hospital, Taiyuan, 3 Zhigong New Street, Xinghualing District, Shanxi 030013, PR China
| | - X Zhang
- Department of Colorectal Surgery, Shanxi Cancer Hospital, Taiyuan 030013, PR China
| | - Y Xi
- Department of Pathology, Shanxi Cancer Hospital, Taiyuan, 3 Zhigong New Street, Xinghualing District, Shanxi 030013, PR China
| | - H Wu
- Department of Pathology, First Affiliated of Harbin Medical University, 23 Youzheng Street, Nangang District, Harbin 150001, PR China
| | - Y Song
- Department of Digestive System, First Affiliated Hospital of Harbin Medical University, Harbin 150001, PR China
| | - G Teng
- Department of Pathology, Jinan Lixia People's Hospital, Jinan 250014, PR China
| | - H Li
- Department of Pathology, First Affiliated of Harbin Medical University, 23 Youzheng Street, Nangang District, Harbin 150001, PR China
| | - J Qi
- Department of Pathology, First Affiliated of Harbin Medical University, 23 Youzheng Street, Nangang District, Harbin 150001, PR China.
| | - J Wang
- Department of Anesthesiology/Critical Care Medicine, Johns Hopkins University, School of Medicine, Baltimore, MD, USA.
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Zhang Z, Hou Z, Lin X, Teng G, Meng H, Zang F, Fang F, Liu S. Development of the fetal cerebral cortex in the second trimester: assessment with 7T postmortem MR imaging. AJNR Am J Neuroradiol 2013; 34:1462-7. [PMID: 23413246 DOI: 10.3174/ajnr.a3406] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Few investigators have analyzed the fetal cerebral cortex with MR imaging of high magnetic strength. Our purpose was to document the sulcal development and obtain quantitative measurements of the fetal brain in the second trimester. MATERIALS AND METHODS The brains of 69 fetal specimens, with GA 12-22 weeks, were first scanned on a 7T MR imaging scanner. Then the sequential development of the different fissures and sulci was analyzed, and quantitative measurements of the cerebral cortex were obtained. RESULTS A new chronology of sulcal development during 12-22 weeks GA was summarized. Before 12 weeks, few sulci were present; by 16 weeks, many sulci were present. The 16th week could be considered the most intensive time point for sulcal emergence. Most sulci, except for the postcentral sulcus and intraparietal sulcus, were present by 22 weeks GA. Measurements of the fetal brains, each with different growth rates, linearly increased with GA, but no sexual dimorphisms or cerebral asymmetries were detected. CONCLUSIONS The second trimester is the most important phase, during which most sulci are present and can be clearly shown on 7T postmortem MR imaging. It is apparent that the specific time during which neuropathologic features of sulci appear, previously thought to be well understood, should be redefined. Quantitative data provide assistance in the precise understanding of the immature brain. The present results are valuable in anatomic education, research, and assessment of normal brain development in the uterus.
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Affiliation(s)
- Z Zhang
- Research Center for Sectional and Imaging Anatomy, Shandong University School of Medicine, Shandong, China
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Liu L, Teng G, Zhang D, Song J, He S, Guo J, Fang W. Toxicology of intrahepatic arterial administration of interventional phosphorus-32 glass microspheres to domestic pigs. Chin Med J (Engl) 1999; 112:632-6. [PMID: 11601259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023] Open
Abstract
OBJECTIVE To evaluate the toxic response to intrahepatic arterial administration of radioactive phosphorus-32 glass microspheres (32P-GMS) in domestic pigs. METHODS Through selective catheterization of hepatic artery, 32P-GMS was infused to 5 healthy domestic pigs in a dosage equivalent to the therapeutic dose for human being, and 31P-GMS was infused to other 5 healthy domestic pigs. Two pigs served as the whole course blank controls. One pig from each group was surrendered to euthanasia at week 1, 2, 4, 8 and 16, respectively, and liver biopsies were performed on the rest of pigs at the corresponding time points. Liver tissues from different sites were taken for light and electron microscopy. The ultrastructural histopathological changes were evaluated semiquantitatively. RESULTS The accumulative amount of 32P-GMS in the target tissue attained more than 90% of the total dose administrated. Histologically, abnormal hepatocytes were easily found at week 1 or 2. At week 4 they were less than at week 1 or 2, and endothelium of the sinuses were damaged prominently. At week 8 they were scarcely seen, and liver tissue recovered gradually. The histological features of liver tissue restored to normal at week 16. Semiquantitative analysis of ultrastructural morphology in the experimental group showed no statistical difference (P > 0.50) between the nuclear abnormality (Nabn) and mitochrondrial variability (Mvar) at week 1 or 2, but revealed prominent difference (P < 0.01, P < 0.001) as compared with those in other groups. In the experimental group the Nabn in tissues showed no significant difference (P > 0.20) between week 8 and week 16. CONCLUSION 32P-GMS internal irradiation at the dosage equivalent to human therapeutic dosage exerts reversible injury to domestic pig liver tissue, and it takes more than 8 weeks for the injured liver tissue to recover.
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Affiliation(s)
- L Liu
- Institute of Medical Science, Nanjing Railway Medical College, Nanjing 210009, China
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Mulvany N, Ostör A, Teng G. Evaluation of estradiol in aspirated ovarian cystic lesions. Acta Cytol 1995; 39:663-8. [PMID: 7631540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
During a three-year period, 217 ovarian cystic lesions were evaluated by both fine needle aspiration (FNA) cytology and estradiol (E2) assay at Royal Women's Hospital. One hundred three ovarian lesions were subsequently subjected to histologic examination, and 79 cyst fluids were assayed for progesterone. Of the 151 cystic lesions diagnosed by cytology/histology, 50 were follicular cysts, and 90% had E2 content > 20 nmol/L. The remaining 101 nonfollicular cystic lesions represented a heterogeneous group, but 99% had E2 content < 20 nmol/L. The sensitivity of E2 content > 20 nmol/L for follicular cysts was 90% and the specificity 99%. In contrast, progesterone was elevated in follicular cyst fluid but also in many other types of cysts. Consideration of E2 content in the 66 cysts undiagnosed by histology/cytology revealed 33 follicular cysts. The precise nature of the 33 nonfollicular cystic lesions remains unknown, and further investigations, including surgery, are warranted. It is concluded that E2 assay, unlike progesterone assay, constitutes a useful ancillary diagnostic clue in the evaluation of ovarian cystic lesions in the premenopausal woman.
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Affiliation(s)
- N Mulvany
- Division of Anatomic Pathology and Cytology, Royal Women's Hospital, Melbourne, Australia
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Abstract
This study addressed 3 questions regarding empathic accuracy in a clinically relevant setting. First, does the empathic accuracy of a perceiver improve with increased exposure to a target individual? Second, can empathic accuracy be enhanced by providing the perceiver with feedback about the target's actual thoughts and feelings? Third, are there stable individual differences in empathic accuracy that generalize across different targets? The results indicated that although absolute performance levels varied from 1 target to another, empathic accuracy generally improved with increased exposure to the target. In addition, feedback concerning the target's actual thoughts and feelings accelerated the rate at which the perceivers' empathic accuracy improved. Finally, cross-target consistency in responding (alpha = .86) revealed stable individual differences in the perceivers' empathic ability. Implications of these findings for clinical training and practice are discussed.
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Affiliation(s)
- C Marangoni
- Department of Psychology, University of Texas at Arlington 76019-0528, USA
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Abstract
Bernstein and Garbin (1985b) suggested that the Minnesota Multiphasic Personality Inventory's major clinical scales (excluding Scales ? and 5) can be approximated by an oblique three-component structure: (a) Profile Elevation, (b) Test-taking Attitudes, and (c) Optimism-Pessimism, collectively termed the salient weight model. In this study, we found that both this model and the MMPI's principal component structure remain invariant across race, sex, and, as previously noted, context of testing (job applicants vs. inmates in correctional institutions). We further noted that several alternative definitions of Profile Elevation provide equally satisfactory representation of the relations among the scales. This factor invariance is necessary, but not sufficient, for the MMPI to be viewed as unbiased.
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Affiliation(s)
- I H Bernstein
- Department of Psychology, University of Texas, Arlington 76019
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Abstract
Fenigstein, Scheier, and Buss (1975) developed a three subscale inventory designed to measure self-consciousness. Burnkrant and Page (1984) used confirmatory factor analysis to evaluate the scale and concluded that five items did not belong to their assigned scales and that one of the original subscales really measured two separable traits. Burnkrant and Page's conclusions may simply reflect incidental properties of the item statistics and could weaken the scale if adopted. Fenigstein et al.'s representation fits the data quite well in its original form. However, items on their social anxiety scale also tend to evoke relatively large variability over subjects and items on their public self-consciousness scale tend to evoke relatively little variability. In other words, items on their subscales differ nearly as much statistically as they do substantively.
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Bernstein IH, Huang MH, Teng G, Lin TD. Effects of attitudes toward pornography upon male judgments of female attractiveness. Percept Psychophys 1986; 39:287-93. [PMID: 3737358 DOI: 10.3758/bf03204938] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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