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Soroosh A, Rankin CR, Polytarchou C, Lokhandwala ZA, Patel A, Chang L, Pothoulakis C, Iliopoulos D, Padua DM. miR-24 Is Elevated in Ulcerative Colitis Patients and Regulates Intestinal Epithelial Barrier Function. Am J Pathol 2019; 189:1763-1774. [PMID: 31220450 PMCID: PMC6723227 DOI: 10.1016/j.ajpath.2019.05.018] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 05/01/2019] [Accepted: 05/28/2019] [Indexed: 02/07/2023]
Abstract
Inflammatory bowel disease is characterized by high levels of inflammation and loss of barrier integrity in the colon. The intestinal barrier is a dynamic network of proteins that encircle intestinal epithelial cells. miRNAs regulate protein-coding genes. In this study, miR-24 was found to be elevated in colonic biopsies and blood samples from ulcerative colitis (UC) patients compared with healthy controls. In the colon of UC patients, miR-24 is localized to intestinal epithelial cells, which prompted an investigation of intestinal epithelial barrier function. Two intestinal epithelial cell lines were used to study the effect of miR-24 overexpression on barrier integrity. Overexpression of miR-24 in both cell lines led to diminished transepithelial electrical resistance and increased dextran flux, suggesting an effect on barrier integrity. Overexpression of miR-24 did not induce apoptosis or affect cell proliferation, suggesting that the effect of miR-24 on barrier function was due to an effect on cell-cell junctions. Although the tight junctions in cells overexpressing miR-24 appeared normal, miR-24 overexpression led to a decrease in the tight junction-associated protein cingulin. Loss of cingulin compromised barrier formation; cingulin levels negatively correlated with disease severity in UC patients. Together, these data suggest that miR-24 is a significant regulator of intestinal barrier that may be important in the pathogenesis of UC.
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Affiliation(s)
- Artin Soroosh
- Vatche and Tamar Manoukian Division of Digestive Diseases, Department of Medicine, University of California, Los Angeles, Los Angeles, California
| | - Carl R Rankin
- Vatche and Tamar Manoukian Division of Digestive Diseases, Department of Medicine, University of California, Los Angeles, Los Angeles, California
| | - Christos Polytarchou
- Vatche and Tamar Manoukian Division of Digestive Diseases, Department of Medicine, University of California, Los Angeles, Los Angeles, California
| | - Zulfiqar A Lokhandwala
- Vatche and Tamar Manoukian Division of Digestive Diseases, Department of Medicine, University of California, Los Angeles, Los Angeles, California
| | - Ami Patel
- Vatche and Tamar Manoukian Division of Digestive Diseases, Department of Medicine, University of California, Los Angeles, Los Angeles, California
| | - Lin Chang
- Vatche and Tamar Manoukian Division of Digestive Diseases, Department of Medicine, University of California, Los Angeles, Los Angeles, California
| | - Charalabos Pothoulakis
- Vatche and Tamar Manoukian Division of Digestive Diseases, Department of Medicine, University of California, Los Angeles, Los Angeles, California
| | - Dimitrios Iliopoulos
- Vatche and Tamar Manoukian Division of Digestive Diseases, Department of Medicine, University of California, Los Angeles, Los Angeles, California
| | - David M Padua
- Vatche and Tamar Manoukian Division of Digestive Diseases, Department of Medicine, University of California, Los Angeles, Los Angeles, California; Division of Gastroenterology, Hepatology, and Parenteral Nutrition, Veterans Affairs Greater Los Angeles Healthcare System, Los Angeles, California.
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202
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Boes A, Chang L, Knoerzer M, Nguyen TG, Peters JD, Bowers JE, Mitchell A. Improved second harmonic performance in periodically poled LNOI waveguides through engineering of lateral leakage. Opt Express 2019; 27:23919-23928. [PMID: 31510289 DOI: 10.1364/oe.27.023919] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Accepted: 07/29/2019] [Indexed: 06/10/2023]
Abstract
In this contribution, we investigate the impact of lateral leakage for linear and nonlinear optical waveguides in lithium niobate on an insulator (LNOI). Silicon nitride (SiN) loaded and direct patterned lithium niobate cross-sections are investigated. We show that lateral leakage can take place for the TE mode in LNOI ridge waveguides (X-cut lithium niobate), due to the birefringence of the material. This work gives guidelines for designing waveguides in LNOI that do not suffer from the lateral leakage effect. By applying these design considerations, we avoided the lateral leakage effect at the second harmonic wavelength of a nonlinear optical waveguide in LNOI and demonstrate a peak second harmonic generation conversion efficiency of ~1160% W-1cm-2.
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203
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Chang L, Boes A, Pintus P, Xie W, Peters JD, Kennedy MJ, Jin W, Guo XW, Yu SP, Papp SB, Bowers JE. Low loss (Al)GaAs on an insulator waveguide platform. Opt Lett 2019; 44:4075-4078. [PMID: 31415550 DOI: 10.1364/ol.44.004075] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Accepted: 07/14/2019] [Indexed: 06/10/2023]
Abstract
In this Letter, we demonstrate a low loss gallium arsenide and aluminum gallium arsenide on an insulator platform by heterogenous integration. The resonators on this platform exhibit record high quality factors up to 1.5×106, corresponding to a propagation loss ∼0.4 dB/cm. For the first time, to the best of our knowledge, the loss of integrated III-V semiconductor on insulator waveguides becomes comparable with that of the silicon-on-insulator waveguides. This Letter should have a significant impact on photonic integrated circuits (PICs) and become an essential building block for the evolving nonlinear PICs and integrated quantum photonic systems in the future.
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204
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Xiong W, Zhao X, Villacorta L, Rom O, Garcia-Barrio MT, Guo Y, Fan Y, Zhu T, Zhang J, Zeng R, Chen YE, Jiang Z, Chang L. Brown Adipocyte-Specific PPARγ (Peroxisome Proliferator-Activated Receptor γ) Deletion Impairs Perivascular Adipose Tissue Development and Enhances Atherosclerosis in Mice. Arterioscler Thromb Vasc Biol 2019; 38:1738-1747. [PMID: 29954752 DOI: 10.1161/atvbaha.118.311367] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Objective- Perivascular adipose tissue (PVAT) contributes to vascular homeostasis by producing paracrine factors. Previously, we reported that selective deletion of PPARγ (peroxisome proliferator-activated receptor γ) in vascular smooth muscle cells resulted in concurrent loss of PVAT and enhanced atherosclerosis in mice. To address the causal relationship between loss of PVAT and atherosclerosis, we used BA-PPARγ-KO (brown adipocyte-specific PPARγ knockout) mice. Approach and Results- Deletion of PPARγ in brown adipocytes did not affect PPARγ in white adipocytes or vascular smooth muscle cells or PPARα and PPARδ expression in brown adipocytes. However, development of PVAT and interscapular brown adipose tissue was remarkably impaired, associated with reduced expression of genes encoding lipogenic enzymes in the BA-PPARγ-KO mice. Thermogenesis in brown adipose tissue was significantly impaired with reduced expression of thermogenesis genes in brown adipose tissue and compensatory increase in subcutaneous and gonadal white adipose tissues. Remarkably, basal expression of inflammatory genes and macrophage infiltration in PVAT and brown adipose tissue were significantly increased in the BA-PPARγ-KO mice. BA-PPARγ-KO mice were crossbred with ApoE KO (apolipoprotein E knockout) mice to investigate the development of atherosclerosis. Flow cytometry analysis confirmed increased systemic and PVAT inflammation. Consequently, atherosclerotic lesions were significantly increased in mice with impaired PVAT development, thus indicating that the lack of normal PVAT is sufficient to drive increased atherosclerosis. Conclusions- PPARγ is required for functional PVAT development. PPARγ deficiency in PVAT, while still expressed in vascular smooth muscle cell, enhances atherosclerosis and results in vascular and systemic inflammation, providing new insights on the specific roles of PVAT in atherosclerosis and cardiovascular disease at large.
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Affiliation(s)
- Wenhao Xiong
- From the Key Laboratory for Arteriosclerology of Hunan Province, Institute of Cardiovascular Disease, University of South China, Hengyang (W.X., Z.J.).,Department of Internal Medicine, Frankel Cardiovascular Center (W.X., X.Z., L.V., O.R., M.T.G.-B., Y.G., Y.F., T.Z., J.Z., L.C.)
| | - Xiangjie Zhao
- Department of Internal Medicine, Frankel Cardiovascular Center (W.X., X.Z., L.V., O.R., M.T.G.-B., Y.G., Y.F., T.Z., J.Z., L.C.)
| | - Luis Villacorta
- Department of Internal Medicine, Frankel Cardiovascular Center (W.X., X.Z., L.V., O.R., M.T.G.-B., Y.G., Y.F., T.Z., J.Z., L.C.)
| | - Oren Rom
- Department of Internal Medicine, Frankel Cardiovascular Center (W.X., X.Z., L.V., O.R., M.T.G.-B., Y.G., Y.F., T.Z., J.Z., L.C.)
| | - Minerva T Garcia-Barrio
- Department of Internal Medicine, Frankel Cardiovascular Center (W.X., X.Z., L.V., O.R., M.T.G.-B., Y.G., Y.F., T.Z., J.Z., L.C.)
| | - Yanhong Guo
- Department of Internal Medicine, Frankel Cardiovascular Center (W.X., X.Z., L.V., O.R., M.T.G.-B., Y.G., Y.F., T.Z., J.Z., L.C.)
| | - Yanbo Fan
- Department of Internal Medicine, Frankel Cardiovascular Center (W.X., X.Z., L.V., O.R., M.T.G.-B., Y.G., Y.F., T.Z., J.Z., L.C.)
| | - Tianqing Zhu
- Department of Internal Medicine, Frankel Cardiovascular Center (W.X., X.Z., L.V., O.R., M.T.G.-B., Y.G., Y.F., T.Z., J.Z., L.C.)
| | - Jifeng Zhang
- Department of Internal Medicine, Frankel Cardiovascular Center (W.X., X.Z., L.V., O.R., M.T.G.-B., Y.G., Y.F., T.Z., J.Z., L.C.)
| | - Rong Zeng
- University of Michigan, Ann Arbor; and Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences (R.Z.)
| | | | - Zhisheng Jiang
- From the Key Laboratory for Arteriosclerology of Hunan Province, Institute of Cardiovascular Disease, University of South China, Hengyang (W.X., Z.J.)
| | - Lin Chang
- Department of Internal Medicine, Frankel Cardiovascular Center (W.X., X.Z., L.V., O.R., M.T.G.-B., Y.G., Y.F., T.Z., J.Z., L.C.)
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205
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Affiliation(s)
- Lin Chang
- From the Department of Internal Medicine, Cardiovascular Center, University of Michigan Medical Center, Ann Arbor (L.C., Y.E.C.); and Cardiovascular Research Institute, Morehouse School of Medicine, Atlanta, GA (M.T.G.-B.).
| | - Minerva T Garcia-Barrio
- From the Department of Internal Medicine, Cardiovascular Center, University of Michigan Medical Center, Ann Arbor (L.C., Y.E.C.); and Cardiovascular Research Institute, Morehouse School of Medicine, Atlanta, GA (M.T.G.-B.)
| | - Y Eugene Chen
- From the Department of Internal Medicine, Cardiovascular Center, University of Michigan Medical Center, Ann Arbor (L.C., Y.E.C.); and Cardiovascular Research Institute, Morehouse School of Medicine, Atlanta, GA (M.T.G.-B.).
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206
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Lacy BE, Harris LA, Chang L, Lucak S, Gutman C, Dove LS, Covington PS, Lembo A. Impact of patient and disease characteristics on the efficacy and safety of eluxadoline for IBS-D: a subgroup analysis of phase III trials. Therap Adv Gastroenterol 2019; 12:1756284819841290. [PMID: 31019552 PMCID: PMC6466471 DOI: 10.1177/1756284819841290] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Accepted: 02/14/2019] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND Irritable bowel syndrome with diarrhea (IBS-D) is a prevalent gastrointestinal (GI) disorder with a varied presentation, often overlapping with other GI and non-GI disorders. Eluxadoline is a locally active mixed µ- and κ-opioid receptor agonist and δ-opioid receptor antagonist approved for the treatment of IBS-D in adults. As IBS-D is a heterogeneous disease, factors such as patient demographics, symptom severity, and symptom pattern history can potentially inform treatment selection. METHODS Here, we report additional prospectively planned analyses of two large double-blind, placebo-controlled studies (IBS-3001 and IBS-3002) enrolling patients meeting Rome III criteria for IBS-D. Patients were randomized 1:1:1 to receive placebo or eluxadoline 75 mg or 100 mg twice daily. Efficacy (abdominal pain, stool consistency, and composite, simultaneous improvement in both) and safety were assessed for prospectively defined patient subgroups stratified by age, sex, race, presence of comorbidities, and baseline disease characteristics. RESULTS Across all age, sex, race, comorbidity, and disease characteristic subgroups, a greater proportion of patients were composite responders with both eluxadoline doses as compared with placebo, including patients with a history of depression or a history of gastroesophageal reflux disease. Among patients aged ⩾65 years, a greater proportion of patients receiving eluxadoline 75 mg were composite, abdominal pain, and stool consistency responders compared with those receiving 100 mg. The proportion of patients with at least one adverse event was slightly higher in patients aged ⩾65 years and also in female patients. CONCLUSIONS This analysis suggests that eluxadoline is effective in treating IBS-D across a range of commonly encountered patient types. In contrast to the overall population, patients aged ⩾65 years demonstrated a greater proportion of responders at the lower approved 75 mg eluxadoline dose.
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Affiliation(s)
- Brian E. Lacy
- Division of Gastroenterology and Hepatology,
Mayo Clinic, 4500 San Pablo Road, Jacksonville, FL 32224, USA
| | | | - Lin Chang
- University of California, Los Angeles, CA,
USA
| | - Susan Lucak
- Weill Cornell Medical Center, New York, NY,
USA
| | | | - Leonard S. Dove
- Former employees of Furiex Pharmaceuticals,
Inc., an affiliate of Allergan plc, Madison, NJ, USA
| | - Paul S. Covington
- Former employees of Furiex Pharmaceuticals,
Inc., an affiliate of Allergan plc, Madison, NJ, USA
| | - Anthony Lembo
- Beth Israel Deaconess Medical Center, Boston,
MA, USA
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207
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Chen K, Bai J, Zhao H, Yang F, Zhang C, Wang Y, Chang L, Guan Y, Yi X, Feng L, Zhang K, Cheng S, Wang J. Comprehensive profiling of genomic and TCR repertoire in localized stage lung adenocarcinomas from a prospective cohort study. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz064.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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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208
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Liu H, Zhao Y, Zhou Y, Chang L, Zhang J. Removal of gaseous elemental mercury by modified diatomite. Sci Total Environ 2019; 652:651-659. [PMID: 30380473 DOI: 10.1016/j.scitotenv.2018.10.291] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 10/20/2018] [Accepted: 10/21/2018] [Indexed: 06/08/2023]
Abstract
Novel adsorbents with low cost and high efficiency that do not produce secondary pollutants are vital for removing gaseous elemental mercury (Hg0) from coal-fired power plants. In this study, eight diatomite-based adsorbents were developed and used to remove Hg0 in a bench-scale fixed-bed reactor. The effects of active substances, reaction temperature, and gas components on the Hg0 removal performance of diatomite (Dia) and the mechanisms were investigated. After modification, the specific surface area of diatomite increased by 2-to-12 fold, and the Hg0 removal performance was greatly improved. The Hg0 removal efficiencies of the adsorbents decreased in the following order: I-Dia > Br-Dia > Cl-Dia. The Hg0 removal efficiency of CuBr2-Dia reached 91% in the simulated flue gas at the optimal reaction temperature (140 °C). The simultaneous presence of O2 and HCl promoted the Hg0 removal by CuBr2-Dia. NO alone also played a significant role in Hg0 removal. However, SO2 exhibited clear inhibitory effect. The average Hg0 removal efficiencies of CuBr2-Dia were 60% under 1200 ppm SO2, 87% under 1200 ppm SO2 + 300 ppm NO, and 93% under 4% O2 + 1200 ppm SO2 + 300 ppm NO. The changes in the active adsorption sites caused by NO, and those caused by NO + SO2 were different and irreversible. During the Hg0 removal process, Hg0 was oxidized to the Hg2+ or Hg+ species, while Cu2+ and Br radicals were reduced to Cu+ and Br-, respectively.
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Affiliation(s)
- Huan Liu
- State key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science & Technology, Wuhan 430074, China
| | - Yongchun Zhao
- State key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science & Technology, Wuhan 430074, China.
| | - Yuming Zhou
- State key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science & Technology, Wuhan 430074, China
| | - Lin Chang
- State key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science & Technology, Wuhan 430074, China
| | - Junying Zhang
- State key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science & Technology, Wuhan 430074, China.
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Li GF, Cheng YY, Li BJ, Zhang C, Zhang XX, Su J, Wang C, Chang L, Zhang DZ, Tan CL, Wang N. miR-375 inhibits the proliferation and invasion of glioblastoma by regulating Wnt5a. Neoplasma 2019; 66:350-356. [PMID: 30784283 DOI: 10.4149/neo_2018_180714n484] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2018] [Accepted: 11/06/2018] [Indexed: 11/08/2022]
Abstract
The aberrant expression of microRNA-375 (miR-375) has been proved to be associated with carcinogenesis. However, the role of miR-375 in glioblastoma (GBM) remains unknown. The aim of this study was to investigate biological functions and its molecular mechanisms of miR-375 in GBM cells. In this study, real-time PCR results showed that the level of miR-375 expression in GBM tissues and GBM cell lines (U87 and U251) was decreased. Using MTT assay, Transwell migration and invasion assay, we demonstrated that miR-375 overexpression significantly suppress cell proliferation, cell migration and cell invasion capacity in U87 and U251 cells. However, downregulation of miR-375 had reverse effects on cell proliferation, migration and invasion. Targeting association analysis, dual luciferase assay, RT-PCR and western blot analysis results confirmed that miR-375 could target the 3'UTR of Wnt5a mRNA and regulated its protein expression. Further studies also find overexpression of Wnt5a could significantly reverse miR-375-mediated proliferation, migration and invasion on U87 and U251 cells. Therefore, we concluded that miR-375 inhibited the proliferation and invasion of GBM by regulating Wnt5a and might be a possible therapeutic agent for GBM.
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Affiliation(s)
- G F Li
- Department of Neurosurgery, Cancer Hospital, Harbin Medical University, Harbin, China
| | - Y Y Cheng
- Department of Ultrasound, Cancer Hospital, Harbin Medical University, Harbin, China
| | - B J Li
- Department of Head and Neck Surgery, Cancer Hospital, Harbin Medical University, Harbin, China
| | - C Zhang
- Department of Ultrasound, Cancer Hospital, Harbin Medical University, Harbin, China
| | - X X Zhang
- Department of Neurosurgery, Cancer Hospital, Harbin Medical University, Harbin, China
| | - J Su
- Department of Neurosurgery, Cancer Hospital, Harbin Medical University, Harbin, China
| | - C Wang
- Department of Neurosurgery, Cancer Hospital, Harbin Medical University, Harbin, China
| | - L Chang
- Department of Neurosurgery, Cancer Hospital, Harbin Medical University, Harbin, China
| | - D Z Zhang
- Department of Neurosurgery, Cancer Hospital, Harbin Medical University, Harbin, China
| | - C L Tan
- Department of Neurosurgery, Cancer Hospital, Harbin Medical University, Harbin, China
| | - N Wang
- Department of Neurosurgery, The First Clinical Hospital affiliated to Harbin Medical University, Harbin, China
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210
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Hagiwara SI, Hasdemir B, Heyman MB, Chang L, Bhargava A. Plasma Corticotropin-Releasing Factor Receptors and B7-2⁺ Extracellular Vesicles in Blood Correlate with Irritable Bowel Syndrome Disease Severity. Cells 2019; 8:cells8020101. [PMID: 30704133 PMCID: PMC6406316 DOI: 10.3390/cells8020101] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 01/10/2019] [Accepted: 01/27/2019] [Indexed: 12/13/2022] Open
Abstract
Extracellular vesicles (EVs) are composed of bilayer membranes that are released by different cell types and are present in bodily fluids, such as blood, urine, and bile. EVs are thought to play a key role in intracellular communication. Based on their size and density, EVs are classified into small, medium, or large EVs. Cargo composition in EVs reflects physiological changes in health and disease. Patients with irritable bowel syndrome (IBS) exhibit visceral hypersensitivity and mood disorders. Stressful episodes often precede disease symptoms in IBS patients. Stress-induced symptoms include, but are not limited to, abdominal pain and mood swings. Perceived stress responses are mediated by two known G protein-coupled receptors (GPCRs), corticotropin-releasing factor receptor 1 and 2 (CRFRs). CRFRs belong to the Class B secretin receptor family of GPCRs. Here, we show that CRFRs were present in human and murine plasma, and in EVs purified from mouse serum. CRFRs were present in plasma from IBS patients and healthy controls. EVs secreted from immune cells influence both adaptive and innate immune responses via exchange of EVs between different immune cell types. B7-2 (CD86), a plasma membrane antigen-presenting protein, is present on EVs secreted from dendritic, B-, and mast cells, whereas CD9 is present on EVs secreted from dendritic and intestinal epithelial cells. We found that plasma CRFR levels positively correlated with B7-2+ EVs (R = 0.8597, p < 0.0001), but no association was seen with CD9+ EVs. Plasma CRFRs expression negatively correlated with IBS severity scores. Our data suggests that plasma EVs from immune cells carry CRFRs as cargos and influence cell-cell communication in health and disease.
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Affiliation(s)
- Shin-Ichiro Hagiwara
- The Osher Center for Integrative Medicine, University of California, San Francisco, CA 94143, USA.
| | - Burcu Hasdemir
- The Osher Center for Integrative Medicine, University of California, San Francisco, CA 94143, USA.
- Department of OBGYN, University of California, San Francisco, CA 94143-0556, USA.
| | - Melvin B Heyman
- Department of Pediatrics, University of California, San Francisco, CA 94158, USA.
| | - Lin Chang
- G. Oppenheimer Center for Neurobiology of Stress and Resilience Vatche and Tamar Manoukian Division of Digestive Diseases David Geffen School of Medicine, University of California, Los Angeles, CA 90095-7378, USA.
| | - Aditi Bhargava
- The Osher Center for Integrative Medicine, University of California, San Francisco, CA 94143, USA.
- Department of OBGYN, University of California, San Francisco, CA 94143-0556, USA.
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211
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Li QB, Chang L, Ye F, Luo QH, Tao YX, Shu HH. Role of spinal cyclooxygenase-2 and prostaglandin E2 in fentanyl-induced hyperalgesia in rats. Br J Anaesth 2019; 120:827-835. [PMID: 29576123 DOI: 10.1016/j.bja.2017.11.103] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [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: 11/09/2016] [Revised: 11/20/2017] [Accepted: 11/29/2017] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Accumulated evidence suggests that spinal cyclooxygenase-2 (COX-2) and prostaglandin E2 (PGE2) may be implicated in the development of opioid-induced hyperalgesia. METHODS Rats received subcutaneous fentanyl injections at different doses (20-80 μg kg-1), four separate times at 15-min intervals. Some rats only received fentanyl (60 μg kg-1 × 4 doses) with or without surgical incision. Fentanyl-induced hyperalgesia was evaluated via a tail-pressure or paw-withdrawal test. The concentrations of spinal COX-2, EP-1 receptor (EP-1R) mRNA, and PGE2 were measured. The effects of the COX-2 inhibitor, parecoxib (intraperitoneal 10 mg kg-1), or the EP-1R antagonist, SC51089 (intraperitoneal 100 μg kg-1), on hyperalgesia and spinal PGE2 were examined. RESULTS Acute repeated injections of fentanyl dose-dependently induced mechanical hyperalgesia, which reached a peak at the 1st day and persisted for 1-4 days postinjection. This hyperalgesia could be partly or totally prevented by the pretreatment of either parecoxib or SC51089. Consistently, the levels of spinal COX-2 mRNA and PGE2 were also dose-dependently increased, reaching a peak at the first day and persisting for 2 days postinjection. Pretreatment with parecoxib could block the increase in spinal PGE2 and had no effects on spinal COX-2 and EP-1R mRNA. Fentanyl injection enhanced incision-induced mechanical and thermal hyperalgesia. CONCLUSIONS Acute repeated fentanyl administration dose-dependently produced mechanical hyperalgesia and augmented surgery induced postoperative hyperalgesia. This behavioural change was paralleled with an increase in spinal COX-2 mRNA and PGE2 after fentanyl administration. Inhibition of COX-2 or blockade of EP-1R can partly or totally prevent hyperalgesia.
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Affiliation(s)
- Q B Li
- Department of Anesthesiology, Guangdong Second Provincial General Hospital, Guangzhou, Guangdong, China; Department of Anesthesiology, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China; Department of Anesthesiology, Tianjin Children's Hospital, Tianjin, China
| | - L Chang
- Department of Anesthesiology, Guangdong Second Provincial General Hospital, Guangzhou, Guangdong, China
| | - F Ye
- Department of Anesthesiology, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Q H Luo
- Department of Anesthesiology, Guangdong Second Provincial General Hospital, Guangzhou, Guangdong, China
| | - Y X Tao
- Department of Anesthesiology, New Jersey Medical School, The State University of New Jersey, Newark, NJ, USA; Neuroscience Research Institute, Zhengzhou University Academy of Medical Science, Zhengzhou, Henan, China
| | - H H Shu
- Department of Anesthesiology, Guangdong Second Provincial General Hospital, Guangzhou, Guangdong, China.
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212
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He L, Pang K, Liu W, Tian Y, Chang L, Liu X, Zhao M, Liu Y, Li Y, Jiang X, Song R, Liu Y. Core–shell noble-metal@zeolitic-imidazolate-framework nanocarriers with high cancer treatment efficiency in vitro. J Mater Chem B 2019; 7:1050-1055. [DOI: 10.1039/c8tb03318h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Core–shell Au@zeolitic-imidazolate-framework nanocarriers with high drug-loading, controlled drug release properties, and high cancer treatment efficiency.
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213
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Affiliation(s)
| | - Amit G Singal
- Division of Digestive and Liver Diseases, University of Texas Southwestern, Dallas, Texas
| | - Lin Chang
- Vatche and Tamar Manoukian Division of Digestive Diseases, G. Oppenheimer Center for Neurobiology of Stress and Resilience, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, California
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214
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Long C, Wang K, Shi Y, Yang Z, Zhang X, Zhang Y, Han J, Bao Y, Chang L, Liu S, Tang Z. Tuning the electronic structure of PtRu bimetallic nanoparticles for promoting the hydrogen oxidation reaction in alkaline media. Inorg Chem Front 2019. [DOI: 10.1039/c9qi00942f] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Alloying degree of PtRu bimetallic nanoparticles can be controlled to finely tune electronic effect for enhanced Hydrogen oxidation reaction in alkaline.
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Zhang Y, Fang W, Yang Y, Chang L, Zhang L, Zhang L. P102 The Correlations of Tumor Mutational Burden Among Single-region Tissue, Multi-region Tissues And Blood in NSCLC. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.10.128] [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: 10/27/2022]
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216
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Zhang Y, Zhang L, Chang L, Yang Y, Fang W, Guan Y, Xia X, Yi X. Whether pericarcinomatous tissue of non-small cell lung cancer can serve as genetic background filter in next-generation sequencing analysis. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy441.016] [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: 11/14/2022] Open
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Abstract
Perivascular adipose tissue (PVAT), the adipose tissue that surrounds most of the vasculature, has emerged as an active component of the blood vessel wall regulating vascular homeostasis and affecting the pathogenesis of atherosclerosis. Although PVAT characteristics resemble both brown and white adipose tissues, recent evidence suggests that PVAT develops from its own distinct precursors implying a closer link between PVAT and vascular system. Under physiological conditions, PVAT has potent anti-atherogenic properties mediated by its ability to secrete various biologically active factors that induce non-shivering thermogenesis and metabolize fatty acids. In contrast, under pathological conditions (mainly obesity), PVAT becomes dysfunctional, loses its thermogenic capacity and secretes pro-inflammatory adipokines that induce endothelial dysfunction and infiltration of inflammatory cells, promoting atherosclerosis development. Since PVAT plays crucial roles in regulating key steps of atherosclerosis development, it may constitute a novel therapeutic target for the prevention and treatment of atherosclerosis. Here, we review the current literature regarding the roles of PVAT in the pathogenesis of atherosclerosis.
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Affiliation(s)
- Xiao-Yan Qi
- Institute of Cardiovascular Disease, Key Lab for Arteriosclerology of Hunan Province, University of South China, Hengyang, 421001 China
| | - Shun-Lin Qu
- Institute of Cardiovascular Disease, Key Lab for Arteriosclerology of Hunan Province, University of South China, Hengyang, 421001 China
| | - Wen-Hao Xiong
- Institute of Cardiovascular Disease, Key Lab for Arteriosclerology of Hunan Province, University of South China, Hengyang, 421001 China
| | - Oren Rom
- Cardiovascular Research Center, University of Michigan, Ann Arbor, MI USA
| | - Lin Chang
- Cardiovascular Research Center, University of Michigan, Ann Arbor, MI USA
| | - Zhi-Sheng Jiang
- Institute of Cardiovascular Disease, Key Lab for Arteriosclerology of Hunan Province, University of South China, Hengyang, 421001 China
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Liu X, Chen X, Wang F, Xie Z, Xu C, Wang H, Chang L, Xia X, Guan Y, Yi X, Chen L. P2.01-68 Capture-Based Sequencing Depicts Evolution Characteristics of Pulmonary Sarcomatoid Carcinoma. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.1122] [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]
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219
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Jia N, Chang L, Dou X, Guan M, Shao Y, Li N, Cheng Y, Ying H, Sun Z, Zhou Y, Zhao L, Zhou J, Bai C. Circulating tumor DNA by next generation sequencing as a prognostic and predictive biomarker in metastatic colorectal cancer. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy281.098] [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: 11/13/2022] Open
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220
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Chen K, Zhao H, Bai J, Yang F, Chang L, Guan Y, Yi X, Feng L, Cheng S, Wang J. P2.03-26 A Prospective Cohort Study of TMB and Determinants of ctDNA Detection by Comprehensive Genomic Profiling in Stage I Lung Adenocarcinomas. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.1213] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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221
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Ai X, Lin Y, Zhang J, Xie C, Liu A, Hu X, Zhao Q, Zang Y, Rao C, Hu X, Chang L, Li Q, Guan Y, Chen R, Yi X, Lu S. MA16.06 EGFR Clonality and Tumor Mutation Burden (TMB) by Circulating Tumor DNA (ctDNA) Sequencing in Advanced Non-Small Cell Lung Cancer (NSCLC). J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.452] [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]
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Shi Y, Xing P, Han X, Wang S, Liu Y, Liu P, Li J, Chang L, Guan Y, Zhang Z, Wu D, Yao J, Xin Y. P1.13-18 Exploring the Resistance Mechanism of Osimertinib and Monitoring the Treatment Response Using Plasma ctDNA in Chinese NSCLC Patients. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.875] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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223
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Song G, Chen C, Zhang J, Chang L, Zhu D, Wang X. Association of traditional Chinese exercises with glycemic responses in people with type 2 diabetes: A systematic review and meta-analysis of randomized controlled trials. J Sport Health Sci 2018; 7:442-452. [PMID: 30450253 PMCID: PMC6226554 DOI: 10.1016/j.jshs.2018.08.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Revised: 03/25/2018] [Accepted: 06/15/2018] [Indexed: 05/16/2023]
Abstract
BACKGROUND There is increasing evidence showing the health benefits of various forms of traditional Chinese exercises (TCEs) on the glycemic profile in people with type 2 diabetes. However, relatively little is known about the combined clinical effectiveness of these traditional exercises. This study was designed to perform a systematic review and meta-analysis of the overall effect of 3 common TCEs (Tai Ji Quan, Qigong, Ba Duan Jin) on glycemic control in adults with type 2 diabetes. METHODS We conducted an extensive database search in Cochrane Library, EMBASE, PubMed, Web of Science, EBSCO, and China National Knowledge Infrastructure on randomized controlled trials published between April 1967 and September 2017 that compared any of the 3 TCEs with a control or comparison group on glycemic control. Data extraction was performed by 2 independent reviewers. Study quality was evaluated using the Cochrane Handbook for Systematic Reviews of Interventions, which assessed the risk of bias, including sequence generation, allocation concealment, blinding, completeness of outcome data, and selective outcome reporting. The resulting quality of the reviewed studies was characterized in 3 grades representing the level of bias: low, unclear, and high. All analyses were performed using random effects models and heterogeneity was quantified. We a priori specified changes in biomarkers of hemoglobin A1c (in percentage) and fasting blood glucose (mmol/L) as the main outcomes and triglycerides, total cholesterol, low-density lipoprotein cholesterol, high-density lipoprotein-cholesterol, 2-h plasma glucose, and fasting plasma glucose as secondary outcomes. RESULTS A total of 39 randomized, controlled trials (Tai Ji Quan = 11; Qigong = 6; Ba Duan Jin = 22) with 2917 type 2 diabetic patients (aged 41-80 years) were identified. Compared with a control or comparison group, pooled meta-analyses of TCEs showed a significant decrease in hemoglobin A1c (mean difference (MD) = -0.67%; 95% confidence interval (CI): -0.86% to -0.48%; p < 0.00001) and fasting blood glucose (MD = -0.66 mmol/L; 95%CI: -0.95 to -0.37 mmol/L; p < 0.0001). The observed effect was more pronounced for interventions that were medium range in duration (i.e., >3-<12 months). TCE interventions also showed improvements in the secondary outcome measures. A high risk of bias was observed in the areas of blinding (i.e., study participants and personnel, and outcome assessment). CONCLUSION Among patients with type 2 diabetes, TCEs were associated with significantly lower hemoglobin A1c and fasting blood glucose. Further studies to better understand the dose and duration of exposure to TCEs are warranted.
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Affiliation(s)
- Ge Song
- Department of Sports Rehabilitation, Shanghai University of Sport, Shanghai 200438, China
| | - Changcheng Chen
- Department of Sports Rehabilitation, Shanghai University of Sport, Shanghai 200438, China
| | - Juan Zhang
- Department of Sports Rehabilitation, Shanghai University of Sport, Shanghai 200438, China
| | - Lin Chang
- Department of Sports Rehabilitation, Shanghai University of Sport, Shanghai 200438, China
| | - Dong Zhu
- School of Wushu, Shanghai University of Sport, Shanghai 200438, China
| | - Xueqiang Wang
- Department of Sports Rehabilitation, Shanghai University of Sport, Shanghai 200438, China
- Corresponding author.
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Shao Q, Chang L, Wei Z, Wei Y. Separation of Four Flavonol Glycosides from Solanum rostratum Dunal Using Solvent Sublation Followed by HSCCC and Low Column Temperature Preparative HPLC. J Chromatogr Sci 2018; 56:695-701. [PMID: 29771292 DOI: 10.1093/chromsci/bmy044] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2016] [Indexed: 01/24/2023]
Abstract
Hyperoside, 3'-O-methylquercetin 3-O-β-D-galactopyranoside, astragalin and 3'-O-methylquercetin 3-O-β-D-glucopyranoside from an invasive weed Solanum rostratum Dunal were separated and purified successfully by high-speed counter-current chromatography (HSCCC) with a solvent system composed of n-hexane-ethyl acetate-methanol-water (1:7:1:7, v/v) and gradient elution mode preparative high-performance liquid chromatography (prep-HPLC) with low column temperature. In the sample pretreatment section, target compounds in aqueous extract of the weed were concentrated using solvent sublation. Two target fractions with purities of 93.75% and 93.68% were obtained from HSCCC. Their chemical structures were identified. The fraction 1 is a pure compound hyperoside and the fraction 2 is the mixture of astragalin, 3'-O-methylquercetin 3-O-β-D-galactopyranoside and 3'-O-methylquercetin 3-O-β-D-glucopyranoside by nuclear magnetic resonance and liquid chromatography-mass spectra. Then, the three flavonol glycosides in the fraction 2 were separated and purified successfully by prep-HPLC with low column temperature.
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Affiliation(s)
- Qian Shao
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, PR China
| | - Lin Chang
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, PR China
| | - Zhenya Wei
- Beijing Key Laboratory of Environmentally Harmful Chemicals Analysis, Beijing University of Chemical Technology, Beijing, China
| | - Yun Wei
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, PR China
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Wang XQ, Chang L, Chen JW, Zhang RY, Shen WF, Lu L. P2675Increased 12/15-lipoxygenase by disturbed flow promotes oxidative modification of low-density lipoprotein in endothelial cells. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- X Q Wang
- Rui Jin Hospital, Shanghai Jiaotong University School of Medicine, Department of Cardiology, Shanghai, China People's Republic of
| | - L Chang
- Rui Jin Hospital, Shanghai Jiaotong University School of Medicine, Department of Cardiology, Shanghai, China People's Republic of
| | - J W Chen
- Rui Jin Hospital, Shanghai Jiaotong University School of Medicine, Department of Cardiology, Shanghai, China People's Republic of
| | - R Y Zhang
- Rui Jin Hospital, Shanghai Jiaotong University School of Medicine, Department of Cardiology, Shanghai, China People's Republic of
| | - W F Shen
- Rui Jin Hospital, Shanghai Jiaotong University School of Medicine, Department of Cardiology, Shanghai, China People's Republic of
| | - L Lu
- Rui Jin Hospital, Shanghai Jiaotong University School of Medicine, Department of Cardiology, Shanghai, China People's Republic of
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226
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Chang L, Xiong W, Zhao X, Fan Y, Guo Y, Garcia-Barrio M, Zhang J, Jiang Z, Lin JD, Chen YE. Bmal1 in Perivascular Adipose Tissue Regulates Resting-Phase Blood Pressure Through Transcriptional Regulation of Angiotensinogen. Circulation 2018; 138:67-79. [PMID: 29371216 PMCID: PMC6030431 DOI: 10.1161/circulationaha.117.029972] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Accepted: 01/16/2018] [Indexed: 02/07/2023]
Abstract
BACKGROUND The perivascular adipose tissue (PVAT) surrounding vessels constitutes a distinct functional integral layer of the vasculature required to preserve vascular tone under physiological conditions. However, there is little information on the relationship between PVAT and blood pressure regulation, including its potential contributions to circadian blood pressure variation. METHODS Using unique brown adipocyte-specific aryl hydrocarbon receptor nuclear translocator-like protein 1 (Bmal1) and angiotensinogen knockout mice, we determined the vasoactivity of homogenized PVAT in aortic rings and how brown adipocyte peripheral expression of Bmal1 and angiotensinogen in PVAT regulates the amplitude of diurnal change in blood pressure in mice. RESULTS We uncovered a peripheral clock in PVAT and demonstrated that loss of Bmal1 in PVAT reduces blood pressure in mice during the resting phase, leading to a superdipper phenotype. PVAT extracts from wild-type mice significantly induced contractility of isolated aortic rings in vitro in an endothelium-independent manner. This property was impaired in PVAT from brown adipocyte-selective Bmal1-deficient (BA-Bmal1-KO) mice. The PVAT contractile properties were mediated by local angiotensin II, operating through angiotensin II type 1 receptor-dependent signaling in the isolated vessels and linked to PVAT circadian regulation of angiotensinogen. Indeed, angiotensinogen mRNA and angiotensin II levels in PVAT of BA-Bmal1-KO mice were significantly reduced. Systemic infusion of angiotensin II, in turn, reduced Bmal1 expression in PVAT while eliminating the hypotensive phenotype during the resting phase in BA-Bmal1-KO mice. Angiotensinogen, highly expressed in PVAT, shows circadian expression in PVAT, and selective deletion of angiotensinogen in brown adipocytes recapitulates the phenotype of selective deletion of Bmal1 in brown adipocytes. Furthermore, angiotensinogen is a transcriptional target of Bmal1 in PVAT. CONCLUSIONS These data indicate that local Bmal1 in PVAT regulates angiotensinogen expression and the ensuing increase in angiotensin II, which acts on smooth muscle cells in the vessel walls to regulate vasoactivity and blood pressure in a circadian fashion during the resting phase. These findings will contribute to a better understanding of the cardiovascular complications of circadian disorders, alterations in the circadian dipping phenotype, and cross-talk between systemic and peripheral regulation of blood pressure.
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Affiliation(s)
- Lin Chang
- Cardiovascular Center, Department of Internal Medicine (L.C., X.Z., Y.F., Y.G., M.G.B., J.Z., Y.E.C.)
| | - Wenhao Xiong
- Institute of Cardiovascular Disease, Key Laboratory for Atherosclerology of Hunan Province, University of South China, Hengyang (W.X., Z.J.)
| | - Xiangjie Zhao
- Cardiovascular Center, Department of Internal Medicine (L.C., X.Z., Y.F., Y.G., M.G.B., J.Z., Y.E.C.)
| | - Yanbo Fan
- Cardiovascular Center, Department of Internal Medicine (L.C., X.Z., Y.F., Y.G., M.G.B., J.Z., Y.E.C.)
| | - Yanhong Guo
- Cardiovascular Center, Department of Internal Medicine (L.C., X.Z., Y.F., Y.G., M.G.B., J.Z., Y.E.C.)
| | - Minerva Garcia-Barrio
- Cardiovascular Center, Department of Internal Medicine (L.C., X.Z., Y.F., Y.G., M.G.B., J.Z., Y.E.C.)
| | - Jifeng Zhang
- Cardiovascular Center, Department of Internal Medicine (L.C., X.Z., Y.F., Y.G., M.G.B., J.Z., Y.E.C.)
| | - Zhisheng Jiang
- Institute of Cardiovascular Disease, Key Laboratory for Atherosclerology of Hunan Province, University of South China, Hengyang (W.X., Z.J.)
| | - Jiandie D Lin
- Life Sciences Institute (J.D.L.)
- Department of Cell and Developmental Biology (J.D.L.), University of Michigan, Ann Arbor
| | - Y Eugene Chen
- Cardiovascular Center, Department of Internal Medicine (L.C., X.Z., Y.F., Y.G., M.G.B., J.Z., Y.E.C.)
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Affiliation(s)
- John W Wiley
- Department Internal Medicine, University of Michigan, Ann Arbor, Michigan.
| | - Lin Chang
- G. Oppenheimer Center for Neurobiology of Stress and Resilience at UCLA, Vatche and Tamar Manoukian Division of Gastroenterology, University of California, Los Angeles, Los Angeles, California
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Bonfiglio F, Zheng T, Garcia-Etxebarria K, Hadizadeh F, Bujanda L, Bresso F, Agreus L, Andreasson A, Dlugosz A, Lindberg G, Schmidt PT, Karling P, Ohlsson B, Simren M, Walter S, Nardone G, Cuomo R, Usai-Satta P, Galeazzi F, Neri M, Portincasa P, Bellini M, Barbara G, Latiano A, Hübenthal M, Thijs V, Netea MG, Jonkers D, Chang L, Mayer EA, Wouters MM, Boeckxstaens G, Camilleri M, Franke A, Zhernakova A, D'Amato M. Female-Specific Association Between Variants on Chromosome 9 and Self-Reported Diagnosis of Irritable Bowel Syndrome. Gastroenterology 2018; 155:168-179. [PMID: 29626450 PMCID: PMC6035117 DOI: 10.1053/j.gastro.2018.03.064] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Revised: 03/28/2018] [Accepted: 03/31/2018] [Indexed: 02/07/2023]
Abstract
BACKGROUND & AIMS Genetic factors are believed to affect risk for irritable bowel syndrome (IBS), but there have been no sufficiently powered and adequately sized studies. To identify DNA variants associated with IBS risk, we performed a genome-wide association study (GWAS) of the large UK Biobank population-based cohort, which includes genotype and health data from 500,000 participants. METHODS We studied 7,287,191 high-quality single nucleotide polymorphisms in individuals who self-reported a doctor's diagnosis of IBS (cases; n = 9576) compared to the remainder of the cohort (controls; n = 336,499) (mean age of study subjects, 40-69 years). Genome-wide significant findings were further investigated in 2045 patients with IBS from tertiary centers and 7955 population controls from Europe and the United States, and a small general population sample from Sweden (n = 249). Functional annotation of GWAS results was carried out by integrating data from multiple biorepositories to obtain biological insights from the observed associations. RESULTS We identified a genome-wide significant association on chromosome 9q31.2 (single nucleotide polymorphism rs10512344; P = 3.57 × 10-8) in a region previously linked to age at menarche, and 13 additional loci of suggestive significance (P < 5.0×10-6). Sex-stratified analyses revealed that the variants at 9q31.2 affect risk of IBS in women only (P = 4.29 × 10-10 in UK Biobank) and also associate with constipation-predominant IBS in women (P = .015 in the tertiary cohort) and harder stools in women (P = .0012 in the population-based sample). Functional annotation of the 9q31.2 locus identified 8 candidate genes, including the elongator complex protein 1 gene (ELP1 or IKBKAP), which is mutated in patients with familial dysautonomia. CONCLUSIONS In a sufficiently powered GWAS of IBS, we associated variants at the locus 9q31.2 with risk of IBS in women. This observation may provide additional rationale for investigating the role of sex hormones and autonomic dysfunction in IBS.
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Affiliation(s)
- Ferdinando Bonfiglio
- Unit of Gastrointestinal Genetics, Department of Gastrointestinal and Liver Diseases, Biodonostia Health Research Institute, San Sebastián, Spain; Department of Biosciences and Nutrition, Karolinska Institutet, Stockholm, Sweden
| | - Tenghao Zheng
- Department of Biosciences and Nutrition, Karolinska Institutet, Stockholm, Sweden; Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Koldo Garcia-Etxebarria
- Unit of Gastrointestinal Genetics, Department of Gastrointestinal and Liver Diseases, Biodonostia Health Research Institute, San Sebastián, Spain; Unit of Clinical Epidemiology, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden
| | - Fatemeh Hadizadeh
- Department of Biosciences and Nutrition, Karolinska Institutet, Stockholm, Sweden
| | - Luis Bujanda
- Unit of Gastrointestinal Genetics, Department of Gastrointestinal and Liver Diseases, Biodonostia Health Research Institute, San Sebastián, Spain; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas, Universidad del País Vasco, San Sebastián, Spain
| | - Francesca Bresso
- Gastoenterology Unit, Tema inflammation and infection, Karolinska University Hospital, Stockholm, Sweden
| | - Lars Agreus
- Division for Family Medicine and Primary Care, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden
| | - Anna Andreasson
- Division for Family Medicine and Primary Care, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden; Stress Research Institute, Stockholm University, Stockholm, Sweden
| | - Aldona Dlugosz
- Department of Medicine Solna, Karolinska Institutet, Center for Digestive Diseases, Karolinska University Hospital, Stockholm, Sweden
| | - Greger Lindberg
- Department of Medicine Solna, Karolinska Institutet, Center for Digestive Diseases, Karolinska University Hospital, Stockholm, Sweden
| | - Peter T Schmidt
- Department of Medicine Solna, Karolinska Institutet, Center for Digestive Diseases, Karolinska University Hospital, Stockholm, Sweden
| | - Pontus Karling
- Division of Medicine, Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden
| | - Bodil Ohlsson
- Lund University, Skåne University Hospital, Department of Internal Medicine, Lund, Sweden
| | - Magnus Simren
- Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Susanna Walter
- Division of Neuro and Inflammation Science, Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - Gerardo Nardone
- Gastroenterology Unit, Department of Clinical Medicine and Surgery, University Federico II, Naples, Italy
| | - Rosario Cuomo
- Digestive Motility Diseases, Department of Clinical Medicine and Surgery, Federico II University Hospital, Naples, Italy
| | - Paolo Usai-Satta
- SC Gastroenterologia, Azienda Ospedaliera G. Brotzu, Cagliari, Italy
| | | | - Matteo Neri
- Department of Medicine and Aging Sciences and Center for Excellence on Aging, G. D'Annunzio University and Foundation, Chieti, Italy
| | - Piero Portincasa
- Department of Biomedical Sciences and Human Oncology, Clinica Medica A. Murri, University of Bari Medical School, Bari, Italy
| | - Massimo Bellini
- Gastroenterology Unit, Department of Gastroenterology, University of Pisa, Pisa, Italy
| | - Giovanni Barbara
- Department of Medical and Surgical Sciences, University of Bologna, St. Orsola, Malpighi Hospital, Bologna, Italy
| | - Anna Latiano
- Division of Gastroenterology, Istituto di Ricovero e Cura a Carattere Scientifico, Casa Sollievo della Sofferenza Hospital, San Giovanni Rotondo, Italy
| | - Matthias Hübenthal
- Institute of Clinical Molecular Biology, Christian-Albrechts-University of Kiel, Kiel, Germany
| | - Vincent Thijs
- Florey Institute of Neuroscience and Mental Health, Heidelberg, Victoria, Australia
| | - Mihai G Netea
- Department of Internal Medicine and Radboud Center of Infectious Diseases, Radboud University Medical Center, Nijmegen, The Netherlands; Department for Genomics and Immunoregulation, Life and Medical Sciences Institute, University of Bonn, Bonn, Germany
| | - Daisy Jonkers
- Department of Internal Medicine, Nutrition and Toxicology Research Institute Maastricht, School for Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+, Maastricht, The Netherlands
| | - Lin Chang
- G. Oppenheimer Center for Neurobiology of Stress and Resilience, Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine at University of California-Los Angeles, Los Angeles, California
| | - Emeran A Mayer
- G. Oppenheimer Center for Neurobiology of Stress and Resilience, Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine at University of California-Los Angeles, Los Angeles, California
| | - Mira M Wouters
- Translational Research Center for Gastro Intestinal Disorders, Katholieke Universiteit Leuven, Leuven, Belgium
| | - Guy Boeckxstaens
- Translational Research Center for Gastro Intestinal Disorders, Katholieke Universiteit Leuven, Leuven, Belgium
| | - Michael Camilleri
- Clinical Enteric Neuroscience Translational and Epidemiological Research, and Division of Gastroenterology and Hepatology, Department of Medicine, Mayo Clinic, Rochester, Minnesota
| | - Andre Franke
- Institute of Clinical Molecular Biology, Christian-Albrechts-University of Kiel, Kiel, Germany
| | - Alexandra Zhernakova
- Department of Genetics, University Medical Center Groningen, Groningen, The Netherlands
| | - Mauro D'Amato
- Unit of Gastrointestinal Genetics, Department of Gastrointestinal and Liver Diseases, Biodonostia Health Research Institute, San Sebastián, Spain; Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden; Unit of Clinical Epidemiology, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden; Ikerbasque, Basque Science Foundation, Bilbao, Spain.
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Videlock EJ, Mahurkar-Joshi S, Hoffman JM, Iliopoulos D, Pothoulakis C, Mayer EA, Chang L. Sigmoid colon mucosal gene expression supports alterations of neuronal signaling in irritable bowel syndrome with constipation. Am J Physiol Gastrointest Liver Physiol 2018; 315:G140-G157. [PMID: 29565640 PMCID: PMC6109711 DOI: 10.1152/ajpgi.00288.2017] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Revised: 03/01/2018] [Accepted: 03/05/2018] [Indexed: 01/31/2023]
Abstract
Peripheral factors likely play a role in at least a subset of irritable bowel syndrome (IBS) patients. Few studies have investigated mucosal gene expression using an unbiased approach. Here, we performed mucosal gene profiling in a sex-balanced sample to identify relevant signaling pathways and gene networks and compare with publicly available profiling data from additional cohorts. Twenty Rome III+ IBS patients [10 IBS with constipation (IBS-C), 10 IBS with diarrhea (IBS-D), 5 men/women each), and 10 age-/sex-matched healthy controls (HCs)] underwent sigmoidoscopy with biopsy for gene microarray analysis, including differential expression, weighted gene coexpression network analysis (WGCNA), gene set enrichment analysis, and comparison with publicly available data. Expression levels of 67 genes were validated in an expanded cohort, including the above samples and 18 additional participants (6 each of IBS-C, IBS-D, HCs) using NanoString nCounter technology. There were 1,270 differentially expressed genes (FDR < 0.05) in IBS-C vs. HCs but none in IBS or IBS-D vs. HCs. WGNCA analysis identified activation of the cAMP/protein kinase A signaling pathway. Nine of 67 genes were validated by the NanoString nCounter technology (FDR < 0.05) in the expanded sample. Comparison with publicly available microarray data from the Mayo Clinic and University of Nottingham supports the reproducibility of 17 genes from the microarray analysis and three of nine genes validated by nCounter in IBS-C vs. HCs. This study supports the involvement of peripheral mechanisms in IBS-C, particularly pathways mediating neuronal signaling. NEW & NOTEWORTHY Peripheral factors play a role in the pathophysiology of irritable bowel syndrome (IBS), which, to date, has been mostly evident in IBS with diarrhea. Here, we show that sigmoid colon mucosal gene expression profiles differentiate IBS with constipation from healthy controls. These profiling data and analysis of additional cohorts also support the concept that peripheral neuronal pathways contribute to IBS pathophysiology.
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Affiliation(s)
- Elizabeth J Videlock
- G. Oppenheimer Center for Neurobiology of Stress and Resilience, Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine, University of California , Los Angeles, California
| | - Swapna Mahurkar-Joshi
- G. Oppenheimer Center for Neurobiology of Stress and Resilience, Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine, University of California , Los Angeles, California
| | - Jill M Hoffman
- Inflammatory Bowel Disease Research Center, Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine, University of California , Los Angeles, California
| | - Dimitrios Iliopoulos
- Center for Systems Biomedicine, Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine, University of California , Los Angeles, California
| | - Charalabos Pothoulakis
- Inflammatory Bowel Disease Research Center, Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine, University of California , Los Angeles, California
| | - Emeran A Mayer
- G. Oppenheimer Center for Neurobiology of Stress and Resilience, Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine, University of California , Los Angeles, California
| | - Lin Chang
- G. Oppenheimer Center for Neurobiology of Stress and Resilience, Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine, University of California , Los Angeles, California
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230
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Chang L, Nicoll Baines K, Allen P, Hopkins P, Shaw M, Boyle J. Oxygen metabolism in malignant hyperthermia susceptible skeletal muscle and the effects of static halothane exposure. Br J Anaesth 2018. [DOI: 10.1016/j.bja.2017.11.052] [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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231
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Spencer DT, Drake T, Briles TC, Stone J, Sinclair LC, Fredrick C, Li Q, Westly D, Ilic BR, Bluestone A, Volet N, Komljenovic T, Chang L, Lee SH, Oh DY, Suh MG, Yang KY, Pfeiffer MHP, Kippenberg TJ, Norberg E, Theogarajan L, Vahala K, Newbury NR, Srinivasan K, Bowers JE, Diddams SA, Papp SB. An optical-frequency synthesizer using integrated photonics. Nature 2018; 557:81-85. [PMID: 29695870 DOI: 10.1038/s41586-018-0065-7] [Citation(s) in RCA: 163] [Impact Index Per Article: 27.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Accepted: 01/22/2018] [Indexed: 11/09/2022]
Abstract
Optical-frequency synthesizers, which generate frequency-stable light from a single microwave-frequency reference, are revolutionizing ultrafast science and metrology, but their size, power requirement and cost need to be reduced if they are to be more widely used. Integrated-photonics microchips can be used in high-coherence applications, such as data transmission 1 , highly optimized physical sensors 2 and harnessing quantum states 3 , to lower cost and increase efficiency and portability. Here we describe a method for synthesizing the absolute frequency of a lightwave signal, using integrated photonics to create a phase-coherent microwave-to-optical link. We use a heterogeneously integrated III-V/silicon tunable laser, which is guided by nonlinear frequency combs fabricated on separate silicon chips and pumped by off-chip lasers. The laser frequency output of our optical-frequency synthesizer can be programmed by a microwave clock across 4 terahertz near 1,550 nanometres (the telecommunications C-band) with 1 hertz resolution. Our measurements verify that the output of the synthesizer is exceptionally stable across this region (synthesis error of 7.7 × 10-15 or below). Any application of an optical-frequency source could benefit from the high-precision optical synthesis presented here. Leveraging high-volume semiconductor processing built around advanced materials could allow such low-cost, low-power and compact integrated-photonics devices to be widely used.
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Affiliation(s)
- Daryl T Spencer
- Time and Frequency Division, National Institute of Standards and Technology, Boulder, CO, USA.
| | - Tara Drake
- Time and Frequency Division, National Institute of Standards and Technology, Boulder, CO, USA
| | - Travis C Briles
- Time and Frequency Division, National Institute of Standards and Technology, Boulder, CO, USA.,Department of Physics, University of Colorado, Boulder, CO, USA
| | - Jordan Stone
- Time and Frequency Division, National Institute of Standards and Technology, Boulder, CO, USA.,Department of Physics, University of Colorado, Boulder, CO, USA
| | - Laura C Sinclair
- Time and Frequency Division, National Institute of Standards and Technology, Boulder, CO, USA
| | - Connor Fredrick
- Time and Frequency Division, National Institute of Standards and Technology, Boulder, CO, USA.,Department of Physics, University of Colorado, Boulder, CO, USA
| | - Qing Li
- Center for Nanoscale Science and Technology, National Institute of Standards and Technology, Gaithersburg, MD, USA
| | - Daron Westly
- Center for Nanoscale Science and Technology, National Institute of Standards and Technology, Gaithersburg, MD, USA
| | - B Robert Ilic
- Center for Nanoscale Science and Technology, National Institute of Standards and Technology, Gaithersburg, MD, USA
| | - Aaron Bluestone
- University of California Santa Barbara, Santa Barbara, CA, USA
| | - Nicolas Volet
- University of California Santa Barbara, Santa Barbara, CA, USA
| | - Tin Komljenovic
- University of California Santa Barbara, Santa Barbara, CA, USA
| | - Lin Chang
- University of California Santa Barbara, Santa Barbara, CA, USA
| | | | - Dong Yoon Oh
- California Institute of Technology, Pasadena, CA, USA
| | | | - Ki Youl Yang
- California Institute of Technology, Pasadena, CA, USA
| | | | | | | | | | - Kerry Vahala
- California Institute of Technology, Pasadena, CA, USA
| | - Nathan R Newbury
- Time and Frequency Division, National Institute of Standards and Technology, Boulder, CO, USA
| | - Kartik Srinivasan
- Center for Nanoscale Science and Technology, National Institute of Standards and Technology, Gaithersburg, MD, USA
| | - John E Bowers
- University of California Santa Barbara, Santa Barbara, CA, USA
| | - Scott A Diddams
- Time and Frequency Division, National Institute of Standards and Technology, Boulder, CO, USA.,Department of Physics, University of Colorado, Boulder, CO, USA
| | - Scott B Papp
- Time and Frequency Division, National Institute of Standards and Technology, Boulder, CO, USA. .,Department of Physics, University of Colorado, Boulder, CO, USA.
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232
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Li Q, Chang L, Su DM, Ma X. [Effects of tetrandrine on proliferation and activation of cardiac fibroblasts]. Beijing Da Xue Xue Bao Yi Xue Ban 2018; 50:331-334. [PMID: 29643535] [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: 06/08/2023]
Abstract
OBJECTIVE To investigate the effects of tetrandrine (Tet) on proliferation and activation of rat cardiac fibroblasts. METHODS Firstly, the cell counting kit-8 (cck-8) assay was applied to detect the effects of Tet with different concentrations on proliferation of cardiac fibroblasts. Secondly, transforming growth factor (TGF-β)with a concentration of 5 μg/L was used to induce the cardiac fibroblast activation, and Western blot was performed to measure the expression variation of β-catenin, vimentin (Vm), fibronectin (Fn) and smooth muscle α-actin (SMA). At last, the real-time PCR was conducted to measure the expression change of collagen-1(Col-1) and collagen-3(Col-3). RESULTS The cck-8 assay showed that the Tet with different concentrations respectively, which were 0.5 μmol/L, 1 μmol/L, 2 μmol/L, 4 μmol/L, and 8 μmol/L, significantly inhibited the proliferation of cardiac fibroblasts. The viability was decreased to 94.4%,84.9%,74.9%,63.8%and 50.3% respectively of the control group when the Tet concentration changed, and the difference was statistically significant, P=0.043, P<0.001, P<0.001, P<0.001, P<0.001 respectively. Western blot revealed that the expressions of β-catenin, Fn, SMA and Vm, were up-regulated by TGF-β(5 μg/L), the result showed that the difference was statistically significant, and the P values were 0.001,0.008,0.010,0.001 respectively. Then, the up-regulation of β-catenin, Fn and SMA was attenuated by pre-treatment of Tet, and the result also displayed that the difference was statistically significant, and the P values were 0.009, 0.005, 0.019,respectively. While there was no significant change in the expression of Vm, according to Western blotting, and P>0.05,at the same time, real-time PCR indicated that the up-regulations of Col-1 and Col-3 which were induced by TGF-β were blocked by pre-treatment of Tet, the result showed that the difference was statistically significant, P<0.001. CONCLUSION According to the experimental results, we can draw the conclusion that: the Tet can significantly inhibit the proliferation of cardiac fibroblasts, meanwhile, it can block the activation of cardiac fibroblasts, which is induced by TGF-β. It is supposed that the Tet may probably have anti myocardial fibrosis, which indicates that it may probably be a medicine which is used to block the cardiac remodeling.
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Affiliation(s)
- Q Li
- Human Genetic Resources Center, National Research Institute for Family Planning, Beijing 100081, China
| | - L Chang
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China
| | - D M Su
- Human Genetic Resources Center, National Research Institute for Family Planning, Beijing 100081, China
| | - X Ma
- Human Genetic Resources Center, National Research Institute for Family Planning, Beijing 100081, China
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233
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Strege PR, Mazzone A, Bernard CE, Neshatian L, Gibbons SJ, Saito YA, Tester DJ, Calvert ML, Mayer EA, Chang L, Ackerman MJ, Beyder A, Farrugia G. Irritable bowel syndrome patients have SCN5A channelopathies that lead to decreased Na V1.5 current and mechanosensitivity. Am J Physiol Gastrointest Liver Physiol 2018; 314:G494-G503. [PMID: 29167113 PMCID: PMC5966747 DOI: 10.1152/ajpgi.00016.2017] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [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] [Indexed: 01/31/2023]
Abstract
The SCN5A-encoded voltage-gated mechanosensitive Na+ channel NaV1.5 is expressed in human gastrointestinal smooth muscle cells and interstitial cells of Cajal. NaV1.5 contributes to smooth muscle electrical slow waves and mechanical sensitivity. In predominantly Caucasian irritable bowel syndrome (IBS) patient cohorts, 2-3% of patients have SCN5A missense mutations that alter NaV1.5 function and may contribute to IBS pathophysiology. In this study we examined a racially and ethnically diverse cohort of IBS patients for SCN5A missense mutations, compared them with IBS-negative controls, and determined the resulting NaV1.5 voltage-dependent and mechanosensitive properties. All SCN5A exons were sequenced from somatic DNA of 252 Rome III IBS patients with diverse ethnic and racial backgrounds. Missense mutations were introduced into wild-type SCN5A by site-directed mutagenesis and cotransfected with green fluorescent protein into HEK-293 cells. NaV1.5 voltage-dependent and mechanosensitive functions were studied by whole cell electrophysiology with and without shear force. Five of 252 (2.0%) IBS patients had six rare SCN5A mutations that were absent in 377 IBS-negative controls. Six of six (100%) IBS-associated NaV1.5 mutations had voltage-dependent gating abnormalities [current density reduction (R225W, R433C, R986Q, and F1293S) and altered voltage dependence (R225W, R433C, R986Q, G1037V, and F1293S)], and at least one kinetic parameter was altered in all mutations. Four of six (67%) IBS-associated SCN5A mutations (R225W, R433C, R986Q, and F1293S) resulted in altered NaV1.5 mechanosensitivity. In this racially and ethnically diverse cohort of IBS patients, we show that 2% of IBS patients harbor SCN5A mutations that are absent in IBS-negative controls and result in NaV1.5 channels with abnormal voltage-dependent and mechanosensitive function. NEW & NOTEWORTHY The voltage-gated Na+ channel NaV1.5 contributes to smooth muscle physiology and electrical slow waves. In a racially and ethnically mixed irritable bowel syndrome cohort, 2% had mutations in the NaV1.5 gene SCN5A. These mutations were absent in irritable bowel syndrome-negative controls. Most mutant NaV1.5 channels were loss of function in voltage dependence or mechanosensitivity.
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Affiliation(s)
- Peter R. Strege
- 1Enteric NeuroScience Program, Division of Gastroenterology and Hepatology, Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota
| | - Amelia Mazzone
- 1Enteric NeuroScience Program, Division of Gastroenterology and Hepatology, Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota
| | - Cheryl E. Bernard
- 1Enteric NeuroScience Program, Division of Gastroenterology and Hepatology, Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota
| | - Leila Neshatian
- 1Enteric NeuroScience Program, Division of Gastroenterology and Hepatology, Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota
| | - Simon J. Gibbons
- 1Enteric NeuroScience Program, Division of Gastroenterology and Hepatology, Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota
| | - Yuri A. Saito
- 1Enteric NeuroScience Program, Division of Gastroenterology and Hepatology, Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota
| | - David J. Tester
- 2Division of Cardiovascular Diseases, Department of Medicine, Mayo Clinic, Rochester, Minnesota
| | - Melissa L. Calvert
- 2Division of Cardiovascular Diseases, Department of Medicine, Mayo Clinic, Rochester, Minnesota
| | - Emeran A. Mayer
- 3Oppenheimer Center for Neurobiology of Stress and Resilience, Division of Digestive Diseases, University of California Los Angeles, Los Angeles, California
| | - Lin Chang
- 3Oppenheimer Center for Neurobiology of Stress and Resilience, Division of Digestive Diseases, University of California Los Angeles, Los Angeles, California
| | - Michael J. Ackerman
- 2Division of Cardiovascular Diseases, Department of Medicine, Mayo Clinic, Rochester, Minnesota
| | - Arthur Beyder
- 1Enteric NeuroScience Program, Division of Gastroenterology and Hepatology, Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota
| | - Gianrico Farrugia
- 1Enteric NeuroScience Program, Division of Gastroenterology and Hepatology, Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota
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234
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Lacy B, Harris L, Chang L, Lucak S, Gutman C, Dove L, Covington P, Lembo A. A169 EFFICACY AND SAFETY OF ELUXADOLINE IN ELDERLY PATIENTS WITH IRRITABLE BOWEL SYNDROME WITH DIARRHEA. J Can Assoc Gastroenterol 2018. [DOI: 10.1093/jcag/gwy009.169] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- B Lacy
- Dartmouth-Hitchcock Medical Center, Lebanon, NH
| | | | - L Chang
- University of California, Los Angeles, CA
| | - S Lucak
- Weill Cornell Medical Center, New York, NY
| | | | - L Dove
- Former employee of Furiex Pharmaceuticals, Inc., an affiliate of Allergan plc, Parsippany, NJ
| | - P Covington
- Former employee of Furiex Pharmaceuticals, Inc., an affiliate of Allergan plc, Parsippany, NJ
| | - A Lembo
- Beth Israel Deaconess Medical Center, Boston, MA
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235
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Yu W, Zhu J, Ma G, Yang J, Qiu Y, Chen Y, Chen H, Jin Y, Yang X, Hu X, Wang T, Chang L, Lin X. Randomized split‐face, controlled comparison of treatment with 1565‐nm nonablative fractional laser for enlarged facial pores. Br J Dermatol 2018; 178:e271-e272. [PMID: 29192959 DOI: 10.1111/bjd.16115] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- W. Yu
- Department of Laser and Aesthetic Medicine Department of Plastic and Reconstructive Surgery Shanghai Ninth People's Hospital affiliated to Shanghai Jiaotong University School of Medicine Shanghai China
| | - J. Zhu
- Department of Laser and Aesthetic Medicine Department of Plastic and Reconstructive Surgery Shanghai Ninth People's Hospital affiliated to Shanghai Jiaotong University School of Medicine Shanghai China
| | - G. Ma
- Department of Laser and Aesthetic Medicine Department of Plastic and Reconstructive Surgery Shanghai Ninth People's Hospital affiliated to Shanghai Jiaotong University School of Medicine Shanghai China
| | - J. Yang
- Department of Epidemiology Mailman School of Public Health Columbia University New York NY U.S.A
| | - Y. Qiu
- Department of Laser and Aesthetic Medicine Department of Plastic and Reconstructive Surgery Shanghai Ninth People's Hospital affiliated to Shanghai Jiaotong University School of Medicine Shanghai China
| | - Y. Chen
- Department of Laser and Aesthetic Medicine Department of Plastic and Reconstructive Surgery Shanghai Ninth People's Hospital affiliated to Shanghai Jiaotong University School of Medicine Shanghai China
| | - H. Chen
- Department of Laser and Aesthetic Medicine Department of Plastic and Reconstructive Surgery Shanghai Ninth People's Hospital affiliated to Shanghai Jiaotong University School of Medicine Shanghai China
| | - Y. Jin
- Department of Laser and Aesthetic Medicine Department of Plastic and Reconstructive Surgery Shanghai Ninth People's Hospital affiliated to Shanghai Jiaotong University School of Medicine Shanghai China
| | - X. Yang
- Department of Laser and Aesthetic Medicine Department of Plastic and Reconstructive Surgery Shanghai Ninth People's Hospital affiliated to Shanghai Jiaotong University School of Medicine Shanghai China
| | - X. Hu
- Department of Laser and Aesthetic Medicine Department of Plastic and Reconstructive Surgery Shanghai Ninth People's Hospital affiliated to Shanghai Jiaotong University School of Medicine Shanghai China
| | - T. Wang
- Department of Laser and Aesthetic Medicine Department of Plastic and Reconstructive Surgery Shanghai Ninth People's Hospital affiliated to Shanghai Jiaotong University School of Medicine Shanghai China
| | - L. Chang
- Department of Laser and Aesthetic Medicine Department of Plastic and Reconstructive Surgery Shanghai Ninth People's Hospital affiliated to Shanghai Jiaotong University School of Medicine Shanghai China
| | - X. Lin
- Department of Laser and Aesthetic Medicine Department of Plastic and Reconstructive Surgery Shanghai Ninth People's Hospital affiliated to Shanghai Jiaotong University School of Medicine Shanghai China
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236
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Li H, Wang J, Rugo HS, Zhang Y, Yang L, Liu X, Shao B, Xu Y, Yang L, Zhang R, Ran R, Chang L. Abstract P2-02-06: Biomarker analysis by next generation circulating tumor DNA (ctDNA) sequencing in patients with advanced breast cancer. Cancer Res 2018. [DOI: 10.1158/1538-7445.sabcs17-p2-02-06] [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] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Next-generation sequencing is of increasing interest to identify specific targets for both drug development and treatment. The study of metastatic cancer is complicated by lack of tissue and the potential for change in biology over treatment. We evaluated ctDNA in patients with advanced breast cancer to explore the relationship between specific DNA mutations and prognosis as well as therapeutic decision making.
Methods:Peripheral blood was collected in EDTA at the time of diagnosis of advanced disease. Samples were sent to Geneplus-Beijing for sequencing. Indexed Illumina libraries were prepared from germline and circulating DNA using the KAPA Library Preparation Kit; the capture probe was designed based on genomic regions selected with 1021 genes, covering the most frequently mutated genes and exons in solid tumors. Clinical characteristics, treatment and outcome data were collected. We analyzed progression free survival (PFS) from first-line therapy and overall survival (OS), endpoints were correlated with observed gene mutations.
Results: 54 patients were enrolled; 27 (50%) HER2+, 22 (41%) hormone receptor + (HR+)/HER2-, and 5 (9%) triple negative (TNBC). Median age was 48 (range 26-74). The median follow-up was 8 years (range 12-180 months). First-line therapy included chemotherapy with trastuzumab for HER2+ disease, chemotherapy with endocrine maintenance (17) or endocrine therapy alone (5) for HR+/HER2- disease, and chemotherapy for TNBC. Mutations were found in TP53, PIK3CA, PIK3CA 3140 A>G(p.H1047R) and ERBB (including ERBB1-4), at 40.7%, 35.2%, 20.4% and 25.9%, respectively. In univariate analysis, patients with tumor mutations in TP53 had a shorter OS (median 64 vs 121 months, p=0.006). The PIK3CA 3140 A>G mutation was more frequent in HER2+ (7/27, 25.9%) than HR+/HER2- (4/22 (18.2%) or TNBC (0/5), and was associated with shorter median PFS in HER2+ disease (mutant vs. wild type: 4 (range 2-9) vs. 8 (range 2-22) months, p=0.006). The frequency of ERBB mutation was similar in HER2- 7/27(25.9%) (p=0.707) or HER2+ 7/27(25.9%) disease (p=0.066); there was no significant impact on PFS in any subset. Multivariate analysis for HER2+ disease including age, ER, Ki67, TP53, PIK3CA, PIK3CA 3140 A>G and ERBB), demonstrated that the PIK3CA 3140 A>G mutation was the only factor associated with shorter PFS (p=0.025); further analysis by receiver operating characteristic (ROC) curve showed that the PIK3CA 3140 A>G mutation and the mutation in PIK3CA 3140 A>G and ERBB combination pathway had a large area under the curve (AUC), with AUC of 0.789, and 0.734 respectively.
Conclusions: Using NGS in ctDNA, we found that the PIK3CA 3140A>G mutation was more frequent in HER2+ disease, and was the only mutation associated with shorter PFS on multivariate analysis. The presence of a TP53 mutation was associated with worse OS. Evaluation of ctDNA is feasible in a general breast cancer population and has prognostic impact; further correlation of these findings with tumor samples is ongoing.
Citation Format: Li H, Wang J, Rugo HS, Zhang Y, Yang L, Liu X, Shao B, Xu Y, Yang L, Zhang R, Ran R, Chang L. Biomarker analysis by next generation circulating tumor DNA (ctDNA) sequencing in patients with advanced breast cancer [abstract]. In: Proceedings of the 2017 San Antonio Breast Cancer Symposium; 2017 Dec 5-9; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2018;78(4 Suppl):Abstract nr P2-02-06.
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Affiliation(s)
- H Li
- Peking University Cancer Hospital & Institute, Beijing, China; University of California San Francisco Helen Diller Family Cancer Center, San Francisco, CA; Branch of Medical Statistics, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Beijing, China; Geneplus-Beijing, Beijing, China
| | - J Wang
- Peking University Cancer Hospital & Institute, Beijing, China; University of California San Francisco Helen Diller Family Cancer Center, San Francisco, CA; Branch of Medical Statistics, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Beijing, China; Geneplus-Beijing, Beijing, China
| | - HS Rugo
- Peking University Cancer Hospital & Institute, Beijing, China; University of California San Francisco Helen Diller Family Cancer Center, San Francisco, CA; Branch of Medical Statistics, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Beijing, China; Geneplus-Beijing, Beijing, China
| | - Y Zhang
- Peking University Cancer Hospital & Institute, Beijing, China; University of California San Francisco Helen Diller Family Cancer Center, San Francisco, CA; Branch of Medical Statistics, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Beijing, China; Geneplus-Beijing, Beijing, China
| | - L Yang
- Peking University Cancer Hospital & Institute, Beijing, China; University of California San Francisco Helen Diller Family Cancer Center, San Francisco, CA; Branch of Medical Statistics, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Beijing, China; Geneplus-Beijing, Beijing, China
| | - X Liu
- Peking University Cancer Hospital & Institute, Beijing, China; University of California San Francisco Helen Diller Family Cancer Center, San Francisco, CA; Branch of Medical Statistics, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Beijing, China; Geneplus-Beijing, Beijing, China
| | - B Shao
- Peking University Cancer Hospital & Institute, Beijing, China; University of California San Francisco Helen Diller Family Cancer Center, San Francisco, CA; Branch of Medical Statistics, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Beijing, China; Geneplus-Beijing, Beijing, China
| | - Y Xu
- Peking University Cancer Hospital & Institute, Beijing, China; University of California San Francisco Helen Diller Family Cancer Center, San Francisco, CA; Branch of Medical Statistics, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Beijing, China; Geneplus-Beijing, Beijing, China
| | - L Yang
- Peking University Cancer Hospital & Institute, Beijing, China; University of California San Francisco Helen Diller Family Cancer Center, San Francisco, CA; Branch of Medical Statistics, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Beijing, China; Geneplus-Beijing, Beijing, China
| | - R Zhang
- Peking University Cancer Hospital & Institute, Beijing, China; University of California San Francisco Helen Diller Family Cancer Center, San Francisco, CA; Branch of Medical Statistics, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Beijing, China; Geneplus-Beijing, Beijing, China
| | - R Ran
- Peking University Cancer Hospital & Institute, Beijing, China; University of California San Francisco Helen Diller Family Cancer Center, San Francisco, CA; Branch of Medical Statistics, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Beijing, China; Geneplus-Beijing, Beijing, China
| | - L Chang
- Peking University Cancer Hospital & Institute, Beijing, China; University of California San Francisco Helen Diller Family Cancer Center, San Francisco, CA; Branch of Medical Statistics, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Beijing, China; Geneplus-Beijing, Beijing, China
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237
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Hickstein DD, Kerber GC, Carlson DR, Chang L, Westly D, Srinivasan K, Kowligy A, Bowers JE, Diddams SA, Papp SB. Quasi-Phase-Matched Supercontinuum Generation in Photonic Waveguides. Phys Rev Lett 2018; 120:053903. [PMID: 29481199 DOI: 10.1103/physrevlett.120.053903] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Indexed: 06/08/2023]
Abstract
Supercontinuum generation (SCG) in integrated photonic waveguides is a versatile source of broadband light, and the generated spectrum is largely determined by the phase-matching conditions. Here we show that quasi-phase-matching via periodic modulations of the waveguide structure provides a useful mechanism to control the evolution of ultrafast pulses during supercontinuum generation. We experimentally demonstrate a quasi-phase-matched supercontinuum to the TE_{20} and TE_{00} waveguide modes, which enhances the intensity of the SCG in specific spectral regions by as much as 20 dB. We utilize higher-order quasi-phase-matching (up to the 16th order) to enhance the intensity in numerous locations across the spectrum. Quasi-phase-matching adds a unique dimension to the design space for SCG waveguides, allowing the spectrum to be engineered for specific applications.
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Affiliation(s)
- Daniel D Hickstein
- Time and Frequency Division, National Institute of Standards and Technology, Boulder, Colorado 80305, USA
| | - Grace C Kerber
- Time and Frequency Division, National Institute of Standards and Technology, Boulder, Colorado 80305, USA
- Gustavus Adolphus College, Saint Peter, Minnesota 56082, USA
| | - David R Carlson
- Time and Frequency Division, National Institute of Standards and Technology, Boulder, Colorado 80305, USA
| | - Lin Chang
- Department of Electrical and Computer Engineering, University of California, Santa Barbara, California 93106, USA
| | - Daron Westly
- Center for Nanoscale Science and Technology, NIST, Gaithersburg, Maryland 20899, USA
| | - Kartik Srinivasan
- Center for Nanoscale Science and Technology, NIST, Gaithersburg, Maryland 20899, USA
| | - Abijith Kowligy
- Time and Frequency Division, National Institute of Standards and Technology, Boulder, Colorado 80305, USA
| | - John E Bowers
- Department of Electrical and Computer Engineering, University of California, Santa Barbara, California 93106, USA
| | - Scott A Diddams
- Time and Frequency Division, National Institute of Standards and Technology, Boulder, Colorado 80305, USA
- Department of Physics, University of Colorado, Boulder, Colorado 80309, USA
| | - Scott B Papp
- Time and Frequency Division, National Institute of Standards and Technology, Boulder, Colorado 80305, USA
- Department of Physics, University of Colorado, Boulder, Colorado 80309, USA
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238
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Chang L, Di Lorenzo C, Farrugia G, Hamilton FA, Mawe GM, Pasricha PJ, Wiley JW. Functional Bowel Disorders: A Roadmap to Guide the Next Generation of Research. Gastroenterology 2018; 154:723-735. [PMID: 29288656 DOI: 10.1053/j.gastro.2017.12.010] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [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] [Indexed: 12/14/2022]
Abstract
In June 2016, the National Institutes of Health hosted a workshop on functional bowel disorders (FBDs), particularly irritable bowel syndrome, with the objective of elucidating gaps in current knowledge and recommending strategies to address these gaps. The workshop aimed to provide a roadmap to help strategically guide research efforts during the next decade. Attendees were a diverse group of internationally recognized leaders in basic and clinical FBD research. This document summarizes the results of their deliberations, including the following general conclusions and recommendations. First, the high prevalence, economic burden, and impact on quality of life associated with FBDs necessitate an urgent need for improved understanding of FBDs. Second, preclinical discoveries are at a point that they can be realistically translated into novel diagnostic tests and treatments. Third, FBDs are broadly accepted as bidirectional disorders of the brain-gut axis, differentially affecting individuals throughout life. Research must integrate each component of the brain-gut axis and the influence of biological sex, early-life stressors, and genetic and epigenetic factors in individual patients. Fourth, research priorities to improve diagnostic and management paradigms include enhancement of the provider-patient relationship, longitudinal studies to identify risk and protective factors of FBDs, identification of biomarkers and endophenotypes in symptom severity and treatment response, and incorporation of emerging "-omics" discoveries. These paradigms can be applied by well-trained clinicians who are familiar with multimodal treatments. Fifth, essential components of a successful program will include the generation of a large, validated, broadly accessible database that is rigorously phenotyped; a parallel, linkable biorepository; dedicated resources to support peer-reviewed, hypothesis-driven research; access to dedicated bioinformatics expertise; and oversight by funding agencies to review priorities, progress, and potential synergies with relevant stakeholders.
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Affiliation(s)
- Lin Chang
- Division of Gastroenterology, Oppenheimer Center for Neurobiology of Stress and Resilience at University of California, Los Angeles, California
| | - Carlo Di Lorenzo
- Division of Gastroenterology, Hepatology and Nutrition, Nationwide Children's Hospital, The Ohio State University College of Medicine, Columbus, Ohio
| | - Gianrico Farrugia
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota
| | - Frank A Hamilton
- Division of Digestive Diseases and Nutrition, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland
| | - Gary M Mawe
- Department of Neurological Sciences, University of Vermont, Burlington, Vermont
| | | | - John W Wiley
- Department Internal Medicine, University of Michigan, Ann Arbor, Michigan.
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239
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Henström M, Diekmann L, Bonfiglio F, Hadizadeh F, Kuech EM, von Köckritz-Blickwede M, Thingholm LB, Zheng T, Assadi G, Dierks C, Heine M, Philipp U, Distl O, Money ME, Belheouane M, Heinsen FA, Rafter J, Nardone G, Cuomo R, Usai-Satta P, Galeazzi F, Neri M, Walter S, Simrén M, Karling P, Ohlsson B, Schmidt PT, Lindberg G, Dlugosz A, Agreus L, Andreasson A, Mayer E, Baines JF, Engstrand L, Portincasa P, Bellini M, Stanghellini V, Barbara G, Chang L, Camilleri M, Franke A, Naim HY, D'Amato M. Functional variants in the sucrase-isomaltase gene associate with increased risk of irritable bowel syndrome. Gut 2018; 67:263-270. [PMID: 27872184 PMCID: PMC5563477 DOI: 10.1136/gutjnl-2016-312456] [Citation(s) in RCA: 105] [Impact Index Per Article: 17.5] [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: 06/16/2016] [Revised: 10/29/2016] [Accepted: 10/31/2016] [Indexed: 12/11/2022]
Abstract
OBJECTIVE IBS is a common gut disorder of uncertain pathogenesis. Among other factors, genetics and certain foods are proposed to contribute. Congenital sucrase-isomaltase deficiency (CSID) is a rare genetic form of disaccharide malabsorption characterised by diarrhoea, abdominal pain and bloating, which are features common to IBS. We tested sucrase-isomaltase (SI) gene variants for their potential relevance in IBS. DESIGN We sequenced SI exons in seven familial cases, and screened four CSID mutations (p.Val557Gly, p.Gly1073Asp, p.Arg1124Ter and p.Phe1745Cys) and a common SI coding polymorphism (p.Val15Phe) in a multicentre cohort of 1887 cases and controls. We studied the effect of the 15Val to 15Phe substitution on SI function in vitro. We analysed p.Val15Phe genotype in relation to IBS status, stool frequency and faecal microbiota composition in 250 individuals from the general population. RESULTS CSID mutations were more common in patients than asymptomatic controls (p=0.074; OR=1.84) and Exome Aggregation Consortium reference sequenced individuals (p=0.020; OR=1.57). 15Phe was detected in 6/7 sequenced familial cases, and increased IBS risk in case-control and population-based cohorts, with best evidence for diarrhoea phenotypes (combined p=0.00012; OR=1.36). In the population-based sample, 15Phe allele dosage correlated with stool frequency (p=0.026) and Parabacteroides faecal microbiota abundance (p=0.0024). The SI protein with 15Phe exhibited 35% reduced enzymatic activity in vitro compared with 15Val (p<0.05). CONCLUSIONS SI gene variants coding for disaccharidases with defective or reduced enzymatic activity predispose to IBS. This may help the identification of individuals at risk, and contribute to personalising treatment options in a subset of patients.
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Affiliation(s)
- Maria Henström
- Department of Biosciences and Nutrition, Karolinska Institutet, Stockholm, Sweden
| | - Lena Diekmann
- Department of Physiological Chemistry, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Ferdinando Bonfiglio
- Department of Biosciences and Nutrition, Karolinska Institutet, Stockholm, Sweden
| | - Fatemeh Hadizadeh
- Department of Biosciences and Nutrition, Karolinska Institutet, Stockholm, Sweden
| | - Eva-Maria Kuech
- Department of Physiological Chemistry, University of Veterinary Medicine Hannover, Hannover, Germany
| | | | - Louise B Thingholm
- Institute of Clinical Molecular Biology, Christian-Albrechts-University of Kiel, Kiel, Germany
| | - Tenghao Zheng
- Department of Biosciences and Nutrition, Karolinska Institutet, Stockholm, Sweden
| | - Ghazaleh Assadi
- Department of Biosciences and Nutrition, Karolinska Institutet, Stockholm, Sweden
| | - Claudia Dierks
- Department of Animal Breeding and Genetics, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Martin Heine
- Department of Physiological Chemistry, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Ute Philipp
- Department of Animal Breeding and Genetics, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Ottmar Distl
- Department of Animal Breeding and Genetics, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Mary E Money
- Internal Medicine Department, University of Maryland School of Medicine, Baltimore, Maryland, USA,Meritus Medical Center, Hagerstown, Maryland, USA
| | - Meriem Belheouane
- Max Planck Institute for Evolutionary Biology, Plön, Germany,Institute for Experimental Medicine, Christian-Albrechts-University of Kiel, Kiel, Germany
| | - Femke-Anouska Heinsen
- Institute of Clinical Molecular Biology, Christian-Albrechts-University of Kiel, Kiel, Germany
| | - Joseph Rafter
- Department of Biosciences and Nutrition, Karolinska Institutet, Stockholm, Sweden
| | - Gerardo Nardone
- Gastroenterology Unit, Department of Clinical Medicine and Surgery, Federico II University Hospital, Naples, Italy
| | - Rosario Cuomo
- Diagnosis and Therapy of Digestive Motility Diseases, Department of Clinical Medicine and Surgery, Federico II University Hospital, Naples, Italy
| | - Paolo Usai-Satta
- S.C. Gastroenterologia, Azienda Ospedaliera G. Brotzu, Cagliari, Italy
| | | | - Matteo Neri
- Department of Medicine and Aging Sciences and CeSi, G. D'Annunzio University, Chieti, Italy
| | - Susanna Walter
- Division of Neuro and Inflammation Science, Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - Magnus Simrén
- Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden,Center for Functional GI and Motility Disorders, University of North Carolina, Chapel Hill, North Carolina, USA
| | - Pontus Karling
- Division of Medicine, Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden
| | - Bodil Ohlsson
- Division of Internal Medicine, Department of Clinical Sciences, Skåne University Hospital, Malmö, Sweden,Division of Internal Medicine, Department of Clinical Sciences, Lund University, Lund, Sweden
| | - Peter T Schmidt
- Department of Medicine, Karolinska Institutet, Center for Digestive Diseases, Karolinska University Hospital, Stockholm, Sweden
| | - Greger Lindberg
- Department of Medicine, Karolinska Institutet, Center for Digestive Diseases, Karolinska University Hospital, Stockholm, Sweden
| | - Aldona Dlugosz
- Department of Medicine, Karolinska Institutet, Center for Digestive Diseases, Karolinska University Hospital, Stockholm, Sweden
| | - Lars Agreus
- Division for Family Medicine, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Huddinge, Stockholm, Sweden
| | - Anna Andreasson
- Division for Family Medicine, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Huddinge, Stockholm, Sweden,Stress Research Institute, Stockholm University, Stockholm, Sweden
| | - Emeran Mayer
- Division of Digestive Diseases, Oppenheimer Center for the Neurobiology of Stress, David Geffen School of Medicine, University of California, Los Angeles, USA
| | - John F Baines
- Max Planck Institute for Evolutionary Biology, Plön, Germany,Institute for Experimental Medicine, Christian-Albrechts-University of Kiel, Kiel, Germany
| | - Lars Engstrand
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden
| | - Piero Portincasa
- Department of Biomedical Sciences and Human Oncology, University of Bari ‘Aldo Moro’, Bari, Italy
| | - Massimo Bellini
- Gastrointestinal Unit, Department of Gastroenterology, University of Pisa, Pisa, Italy
| | - Vincenzo Stanghellini
- Department of Medical and Surgical Sciences, University of Bologna, St. Orsola-Malpighi Hospital, Bologna, Italy
| | - Giovanni Barbara
- Department of Medical and Surgical Sciences, University of Bologna, St. Orsola-Malpighi Hospital, Bologna, Italy
| | - Lin Chang
- Division of Digestive Diseases, Oppenheimer Center for the Neurobiology of Stress, David Geffen School of Medicine, University of California, Los Angeles, USA
| | - Michael Camilleri
- Clinical Enteric Neuroscience Translational and Epidemiological Research, Mayo Clinic, Rochester, Minnesota, USA
| | - Andre Franke
- Institute of Clinical Molecular Biology, Christian-Albrechts-University of Kiel, Kiel, Germany
| | - Hassan Y Naim
- Department of Physiological Chemistry, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Mauro D'Amato
- Department of Biosciences and Nutrition, Karolinska Institutet, Stockholm, Sweden,BioDonostia Health Research Institute, San Sebastian and IKERBASQUE, Basque Science Foundation, Bilbao, Spain,Unit of Clinical Epidemiology, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden
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240
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Abstract
Abdominal aortic aneurysm (AAA) is a vascular disorder with a high case fatality rate in the instance of rupture. AAA is a multifactorial disease, and the etiology is still not fully understood. AAA is more likely to occur in men, but women have a greater risk of rupture and worse prognosis. Women are reportedly protected against AAA possibly by premenopausal levels of estrogen and are, on average, diagnosed at older ages than men. Here, we review the present body of research on AAA pathophysiology in humans, animal models, and cultured cells, with an emphasis on sex differences and sex steroid hormone signaling.
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Affiliation(s)
- Austin C Boese
- Department of Pharmacology, Tulane University School of Medicine , New Orleans, Louisiana
| | - Lin Chang
- Center for Advanced Models for Translational Sciences and Therapeutics, Department of Internal Medicine, University of Michigan , Ann Arbor, Michigan
| | - Ke-Jie Yin
- Department of Neurology, University of Pittsburgh School of Medicine , Pittsburgh, Pennsylvania
| | - Y Eugene Chen
- Center for Advanced Models for Translational Sciences and Therapeutics, Department of Internal Medicine, University of Michigan , Ann Arbor, Michigan
| | - Jean-Pyo Lee
- Department of Physiology, Tulane University School of Medicine , New Orleans, Louisiana.,Center for Stem Cell Research and Regenerative Medicine , New Orleans, Louisiana
| | - Milton H Hamblin
- Department of Pharmacology, Tulane University School of Medicine , New Orleans, Louisiana
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241
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Wen X, Chang L, Gao Y, Han J, Bai Z, Huan Y, Li M, Tang Z, Yan X. A reassembled nanoporous gold leaf electrocatalyst for efficient CO2reduction towards CO. Inorg Chem Front 2018. [DOI: 10.1039/c8qi00023a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The free-standing nanoporous gold leaf has an excellent FE of 90% towards CO and a high mass activity of 20.51 A/g.
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Affiliation(s)
- Xiaosong Wen
- Laboratory of Nanomaterials
- National Center for Nanoscience and Technology
- Beijing
- 100190 P. R China
- School of Materials Science and Engineering
| | - Lin Chang
- Laboratory of Nanomaterials
- National Center for Nanoscience and Technology
- Beijing
- 100190 P. R China
| | - Yan Gao
- Laboratory of Nanomaterials
- National Center for Nanoscience and Technology
- Beijing
- 100190 P. R China
| | - Jianyu Han
- Laboratory of Nanomaterials
- National Center for Nanoscience and Technology
- Beijing
- 100190 P. R China
| | - Zhiming Bai
- School of Civil and Resource Engineering
- University of Science and Technology Beijing
- Beijing 100083
- P. R. China
| | - Yahuan Huan
- School of Materials Science and Engineering
- University of Science and Technology Beijing
- Beijing 100083
- P. R. China
| | - Minghua Li
- School of Materials Science and Engineering
- University of Science and Technology Beijing
- Beijing 100083
- P. R. China
| | - Zhiyong Tang
- Laboratory of Nanomaterials
- National Center for Nanoscience and Technology
- Beijing
- 100190 P. R China
| | - Xiaoqin Yan
- School of Materials Science and Engineering
- University of Science and Technology Beijing
- Beijing 100083
- P. R. China
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242
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Park SH, Naliboff BD, Shih W, Presson AP, Videlock E, Ju T, Kilpatrick L, Gupta A, Mayer EA, Chang L. Resilience is decreased in irritable bowel syndrome and associated with symptoms and cortisol response. Neurogastroenterol Motil 2018; 30:10.1111/nmo.13155. [PMID: 28718999 PMCID: PMC5739983 DOI: 10.1111/nmo.13155] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Accepted: 06/13/2017] [Indexed: 12/14/2022]
Abstract
BACKGROUND Irritable bowel syndrome (IBS) is a stress-sensitive disorder associated with early adverse life events (EALs) and a dysregulated hypothalamic-pituitary-adrenal (HPA) axis. Resilience is the ability to recover and adapt positively to stress but has not been well studied in IBS. The aims of this study are to compare resilience in IBS and healthy controls (HCs) and to assess its relationships with IBS symptom severity, quality of life (QOL), EALs, and HPA axis response. METHODS Two hundred fifty-six subjects (154 IBS, 102 HCs) completed questionnaires for resilience (Connor-Davidson Resilience Scale [CD-RISC] and Brief Resilience Scale [BRS]), IBS symptoms, IBS-QOL, and EALs. Ninety-six of these subjects had serial serum adrenocorticotropic hormone (ACTH) and cortisol levels to exogenous corticotrophin-releasing hormone (CRH) and ACTH measured. The relationship between IBS status, resilience, and other variables of interest was assessed by regression analysis after adjusting for demographics and neuroticism, a predictor of resilience. KEY RESULTS Resilience was significantly lower in IBS compared to HCs (CD-RISC: 72.16±14.97 vs 77.32±12.73, P=.003; BRS: 3.29±0.87 vs 3.93±0.69, P<.001); however, only BRS was significant after controlling for neuroticism (P=.001). Lower BRS scores were associated with greater IBS symptom severity (P=.002), poorer IBS-QOL (P<.001), and a higher number of EALs (P=.01). There was a significant interaction between BRS resilience and IBS status for ACTH-stimulated cortisol response (P=.031); more resilient IBS subjects had lower cortisol response, and more resilient HCs had higher cortisol response. CONCLUSIONS AND INFERENCES Lower resilience is associated with IBS status, worse IBS symptom severity, lower IBS-QOL, greater EALs, and stress hyperresponsiveness.
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Affiliation(s)
- Sarah H. Park
- G. Oppenheimer Center for Neurobiology of Stress and Resilience,
Vatche and Tamar Manoukian Division of Digestive Diseases, Department of Medicine,
David Geffen School of Medicine, University of California, Los Angeles, California,
USA
| | - Bruce D. Naliboff
- G. Oppenheimer Center for Neurobiology of Stress and Resilience,
Vatche and Tamar Manoukian Division of Digestive Diseases, Department of Medicine,
David Geffen School of Medicine, University of California, Los Angeles, California,
USA
| | - Wendy Shih
- G. Oppenheimer Center for Neurobiology of Stress and Resilience,
Vatche and Tamar Manoukian Division of Digestive Diseases, Department of Medicine,
David Geffen School of Medicine, University of California, Los Angeles, California,
USA
- Department of Biostatistics, University of California, Los Angeles,
California, USA
| | - Angela P. Presson
- Division of Epidemiology, Department of Internal Medicine,
University of Utah, Salt Lake City, UT, USA
| | - Elizabeth Videlock
- G. Oppenheimer Center for Neurobiology of Stress and Resilience,
Vatche and Tamar Manoukian Division of Digestive Diseases, Department of Medicine,
David Geffen School of Medicine, University of California, Los Angeles, California,
USA
| | - Tiffany Ju
- G. Oppenheimer Center for Neurobiology of Stress and Resilience,
Vatche and Tamar Manoukian Division of Digestive Diseases, Department of Medicine,
David Geffen School of Medicine, University of California, Los Angeles, California,
USA
| | - Lisa Kilpatrick
- G. Oppenheimer Center for Neurobiology of Stress and Resilience,
Vatche and Tamar Manoukian Division of Digestive Diseases, Department of Medicine,
David Geffen School of Medicine, University of California, Los Angeles, California,
USA
| | - Arpana Gupta
- G. Oppenheimer Center for Neurobiology of Stress and Resilience,
Vatche and Tamar Manoukian Division of Digestive Diseases, Department of Medicine,
David Geffen School of Medicine, University of California, Los Angeles, California,
USA
| | - Emeran A. Mayer
- G. Oppenheimer Center for Neurobiology of Stress and Resilience,
Vatche and Tamar Manoukian Division of Digestive Diseases, Department of Medicine,
David Geffen School of Medicine, University of California, Los Angeles, California,
USA
| | - Lin Chang
- G. Oppenheimer Center for Neurobiology of Stress and Resilience,
Vatche and Tamar Manoukian Division of Digestive Diseases, Department of Medicine,
David Geffen School of Medicine, University of California, Los Angeles, California,
USA
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243
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Bashashati M, Moossavi S, Cremon C, Barbaro MR, Moraveji S, Talmon G, Rezaei N, Hughes PA, Bian ZX, Choi CH, Lee OY, Coëffier M, Chang L, Ohman L, Schmulson MJ, McCallum RW, Simren M, Sharkey KA, Barbara G. Colonic immune cells in irritable bowel syndrome: A systematic review and meta-analysis. Neurogastroenterol Motil 2018; 30. [PMID: 28851005 DOI: 10.1111/nmo.13192] [Citation(s) in RCA: 101] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Accepted: 07/26/2017] [Indexed: 02/08/2023]
Abstract
BACKGROUND & AIMS Increases in mucosal immune cells have frequently been observed in irritable bowel syndrome (IBS) patients. However, this finding is not completely consistent between studies, possibly due to a combination of methodological variability, population differences and small sample sizes. We performed a meta-analysis of case-control studies that compared immune cell counts in colonic biopsies of IBS patients and controls. METHODS PubMed and Embase were searched in February 2017. Results were pooled using standardized mean difference (SMD) and were considered significant when zero was not within the 95% confidence interval (CI). Heterogeneity was assessed based on I2 statistics where I2 ≤ 50% and I2 > 50% indicated fixed and random effect models, respectively. KEY RESULTS Twenty-two studies on 706 IBS patients and 401 controls were included. Mast cells were increased in the rectosigmoid (SMD: 0.38 [95% CI: 0.06-0.71]; P = .02) and descending colon (SMD: 1.69 [95% CI: 0.65-2.73]; P = .001) of IBS patients. Increased mast cells were observed in both constipation (IBS-C) and diarrhea predominant IBS (IBS-D). CD3+ T cells were increased in the rectosigmoid (SMD: 0.53 [95% CI: 0.21-0.85]; P = .001) and the descending colon of the IBS patients (SMD: 0.79, 95% CI [0.28-1.30]; P = .002). This was possibly in relation to higher CD4+ T cells in IBS (SMD: 0.33 [95% CI: 0.01-0.65]; P = .04) as there were no differences in CD8+ T cells. CONCLUSIONS & INFERENCES Mast cells and CD3+ T cells are increased in colonic biopsies of patients with IBS vs non-inflamed controls. These changes are segmental and sometimes IBS-subtype dependent. The diagnostic value of the quantification of colonic mucosal cells in IBS requires further investigation.
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Affiliation(s)
- M Bashashati
- Division of Gastroenterology, Department of Internal Medicine, Texas Tech University Health Sciences Center/Paul L. Foster School of Medicine, El Paso, TX, USA
| | - S Moossavi
- Digestive Oncology Research Center, Digestive Disease Research Institute, Tehran University of Medical Sciences, Tehran, Iran
- Department of Medical Microbiology, University of Manitoba, Winnipeg, MB, Canada
| | - C Cremon
- Department of Medical and Surgical Sciences, Centre for Applied Biomedical Research, University of Bologna, Bologna, Italy
| | - M R Barbaro
- Department of Medical and Surgical Sciences, Centre for Applied Biomedical Research, University of Bologna, Bologna, Italy
| | - S Moraveji
- Division of Gastroenterology, Department of Internal Medicine, Texas Tech University Health Sciences Center/Paul L. Foster School of Medicine, El Paso, TX, USA
| | - G Talmon
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE, USA
- Fred and Pamela Buffet Cancer Center, Omaha, NE, USA
| | - N Rezaei
- Research Center for Immunodeficiencies, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran
| | - P A Hughes
- Centre for Nutritional and Gastrointestinal Diseases, Department of Medicine, University of Adelaide and South Australian Health Medical Health Research Institute, Adelaide, SA, Australia
| | - Z X Bian
- School of Chinese Medicine, Hong Kong Baptist University, Kowloon Tong, Hong Kong SAR, China
| | - C H Choi
- Department of Internal Medicine, Chung-Ang University College of Medicine, Seoul, Korea
| | - O Y Lee
- Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea
| | - M Coëffier
- Normandie Univ, INSERM unit 1073 "Nutrition, inflammation and brain-gut axis", Institute for Research and Innovation in Biomedicine, Rouen Medical University and Rouen University Hospital, Rouen, France
| | - L Chang
- G Oppenheimer Center of Neurobiology of Stress and Resilience, David Geffen School of Medicine, University of California, Los Angeles, CA, USA
| | - L Ohman
- Departments of Internal Medicine and Clinical Nutrition and Microbiology and Immunology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - M J Schmulson
- Laboratorio de Hígado, Páncreas y Motilidad (HIPAM), Unidad de Investigación en Medicina Experimental, Facultad de Medicina-Universidad Nacional Autónoma de México (UNAM), Hospital General de México, Mexico City, Mexico
| | - R W McCallum
- Division of Gastroenterology, Department of Internal Medicine, Texas Tech University Health Sciences Center/Paul L. Foster School of Medicine, El Paso, TX, USA
| | - M Simren
- Department of Internal Medicine & Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Center for Functional GI and Motility Disorders, University of North Carolina, Chapel Hill, NC, USA
| | - K A Sharkey
- Hotchkiss Brain Institute and Snyder Institute for Chronic Diseases, Department of Physiology and Pharmacology, University of Calgary, Calgary, AB, Canada
| | - G Barbara
- Department of Medical and Surgical Sciences, Centre for Applied Biomedical Research, University of Bologna, Bologna, Italy
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244
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Xiong W, Zhao X, Garcia-Barrio MT, Zhang J, Lin J, Chen YE, Jiang Z, Chang L. MitoNEET in Perivascular Adipose Tissue Blunts Atherosclerosis under Mild Cold Condition in Mice. Front Physiol 2017; 8:1032. [PMID: 29311966 PMCID: PMC5742148 DOI: 10.3389/fphys.2017.01032] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [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: 09/30/2017] [Accepted: 11/28/2017] [Indexed: 02/04/2023] Open
Abstract
Background: Perivascular adipose tissue (PVAT), which surrounds most vessels, is de facto a distinct functional vascular layer actively contributing to vascular function and dysfunction. PVAT contributes to aortic remodeling by producing and releasing a large number of undetermined or less characterized factors that could target endothelial cells and vascular smooth muscle cells, and herein contribute to the maintenance of vessel homeostasis. Loss of PVAT in mice enhances atherosclerosis, but a causal relationship between PVAT and atherosclerosis and the possible underlying mechanisms remain to be addressed. The CDGSH iron sulfur domain 1 protein (referred to as mitoNEET), a mitochondrial outer membrane protein, regulates oxidative capacity and adipose tissue browning. The roles of mitoNEET in PVAT, especially in the development of atherosclerosis, are unknown. Methods: The brown adipocyte-specific mitoNEET transgenic mice were subjected to cold environmental stimulus. The metabolic rates and PVAT-dependent thermogenesis were investigated. Additionally, the brown adipocyte-specific mitoNEET transgenic mice were cross-bred with ApoE knockout mice. The ensuing mice were subsequently subjected to cold environmental stimulus and high cholesterol diet challenge for 3 months. The development of atherosclerosis was investigated. Results: Our data show that mitoNEET mRNA was downregulated in PVAT of both peroxisome proliferator-activated receptor gamma coactivator 1-alpha (Pgc1α)- and beta (Pgc1β)-knockout mice which are sensitive to cold. MitoNEET expression was higher in PVAT of wild type mice and increased upon cold stimulus. Transgenic mice with overexpression of mitoNEET in PVAT were cold resistant, and showed increased expression of thermogenic genes. ApoE knockout mice with mitoNEET overexpression in PVAT showed significant downregulation of inflammatory genes and showed reduced atherosclerosis development upon high fat diet feeding when kept in a 16°C environment. Conclusion: mitoNEET in PVAT is associated with PVAT-dependent thermogenesis and prevents atherosclerosis development. The results of this study provide new insights on PVAT and mitoNEET biology and atherosclerosis in cardiovascular diseases.
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Affiliation(s)
- Wenhao Xiong
- Key Laboratory for Atherosclerology of Hunan Province, Institute of Cardiovascular Disease, University of South China, Hengyang, China.,Cardiovascular Research Center, University of Michigan, Ann Arbor, MI, United States
| | - Xiangjie Zhao
- Cardiovascular Research Center, University of Michigan, Ann Arbor, MI, United States
| | | | - Jifeng Zhang
- Cardiovascular Research Center, University of Michigan, Ann Arbor, MI, United States
| | - Jiandie Lin
- Life Science Institute, University of Michigan, Ann Arbor, MI, United States
| | - Y Eugene Chen
- Department of Cardiac Surgery, University of Michigan, Ann Arbor, MI, United States
| | - Zhisheng Jiang
- Key Laboratory for Atherosclerology of Hunan Province, Institute of Cardiovascular Disease, University of South China, Hengyang, China
| | - Lin Chang
- Cardiovascular Research Center, University of Michigan, Ann Arbor, MI, United States
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Abstract
Chronic constipation is a prevalent condition that severely impacts the quality of life of those affected. Several types of primary chronic constipation, which show substantial overlap, have been described, including normal-transit constipation, rectal evacuation disorders and slow-transit constipation. Diagnosis of primary chronic constipation involves a multistep process initiated by the exclusion of 'alarm' features (for example, unintentional weight loss or rectal bleeding) that might indicate organic diseases (such as polyps or tumours) and a therapeutic trial with first-line treatments such as dietary changes, lifestyle modifications and over-the-counter laxatives. If symptoms do not improve, investigations to diagnose rectal evacuation disorders and slow-transit constipation are performed, such as digital rectal examination, anorectal structure and function testing (including the balloon expulsion test, anorectal manometry or defecography) or colonic transit tests (such as the radiopaque marker test, wireless motility capsule test, scintigraphy or colonic manometry). The mainstays of treatment are diet and lifestyle interventions, pharmacological therapy and, rarely, surgery. This Primer provides an introduction to the epidemiology, pathophysiological mechanisms, diagnosis, management and quality of life associated with the commonly encountered clinical problem of chronic constipation in adults unrelated to opioid abuse.
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Affiliation(s)
- Michael Camilleri
- Division of Gastroenterology and Hepatology, Mayo Clinic College of Medicine and Science, Charlton Bldg., Rm. 8-110, Rochester, Minnesota 55905, USA
| | - Alexander C Ford
- Leeds Gastroenterology Institute, St. James's University Hospital, Leeds and Leeds Institute of Biomedical and Clinical Sciences, University of Leeds, Leeds, UK
| | - Gary M Mawe
- Department of Neurological Sciences, The University of Vermont, Burlington, Vermont, USA
| | - Phil G Dinning
- Departments of Gastroenterology & Surgery, Flinders University, Flinders Medical Centre, Adelaide, South Australia, Australia
| | - Satish S Rao
- Division of Gastroenterology and Hepatology, Medical College of Georgia, Augusta University, Augusta, Georgia, USA
| | - William D Chey
- Division of Gastroenterology, University of Michigan, Michigan Medicine, Ann Arbor, Michigan, USA
| | - Magnus Simrén
- Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Anthony Lembo
- Digestive Disease Center, Beth Israel Deaconess Hospital, Boston, Massachusetts, USA
| | | | - Lin Chang
- Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine, University of California, Los Angeles, California, USA
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Hosomura N, Malmasi S, Timerman D, Lei VJ, Zhang H, Chang L, Turchin A. Decline of insulin therapy and delays in insulin initiation in people with uncontrolled diabetes mellitus. Diabet Med 2017; 34:1599-1602. [PMID: 28905434 DOI: 10.1111/dme.13454] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/15/2017] [Indexed: 11/28/2022]
Abstract
AIMS To design and validate a natural language processing algorithm to identify insulin therapy decline from the text of physician notes, and to determine the prevalence of insulin therapy decline and its impact on insulin initiation. METHODS We designed the algorithm using the publicly available natural language processing platform Canary. We evaluated the accuracy of the algorithm on 1501 randomly selected primary care physicians' notes from the electronic medical record system of a large academic medical centre. Using the validated language model, we then studied the prevalence of insulin therapy decline between 2000 and 2014. RESULTS The algorithm identified documentation of insulin therapy decline with a sensitivity of 100% (95% CI 82.4-100), a positive predictive value of 95% (95% CI 74.4-99.9), and a specificity of 99.9% (95% CI 99.6-100.0). We identified 3295 insulin-naïve adults with Type 2 diabetes who were recommended insulin therapy; 984 of them (29.9%) initially declined insulin. People with HbA1c ≥ 75 mmol/mol (9.0%) were more likely [766/2239 (34.2%)] to have declined insulin than people with HbA1c 53-63 mmol/mol (7.0-7.9%) and 64-74 mmol/mol (8.0-8.9%; P < 0.0001). Among the people who initially declined but ultimately started insulin [374/984 (38.0%)], mean time to insulin initiation was 790 days. CONCLUSIONS Insulin therapy decline is common, potentially leading to progression of hyperglycaemia and a delay in achievement of glycaemic control. Further investigation is needed to determine the reasons, risk factors and long-term outcomes of this important clinical phenomenon.
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Affiliation(s)
- N Hosomura
- Brigham and Women's Hospital, Boston, MA, USA
| | - S Malmasi
- Brigham and Women's Hospital, Boston, MA, USA
| | - D Timerman
- Brigham and Women's Hospital, Boston, MA, USA
| | - V J Lei
- Northeastern University, Boston, MA, USA
| | - H Zhang
- Peking Union Medical College Hospital, China
| | - L Chang
- Brigham and Women's Hospital, Boston, MA, USA
| | - A Turchin
- Brigham and Women's Hospital, Boston, MA, USA
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Kim SC, Boese AC, Moore MH, Cleland RM, Chang L, Delafontaine P, Yin KJ, Lee JP, Hamblin MH. Rapid estrogen receptor-α signaling mediated by ERK activation regulates vascular tone in male and ovary-intact female mice. Am J Physiol Heart Circ Physiol 2017; 314:H330-H342. [PMID: 28887333 DOI: 10.1152/ajpheart.00841.2016] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [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] [Indexed: 01/02/2023]
Abstract
Estrogen has been shown to affect vascular reactivity. Here, we assessed the estrogen receptor-α (ERα) dependency of estrogenic effects on vasorelaxation via a rapid nongenomic pathway in both male and ovary-intact female mice. We compared the effect of a primary estrogen, 17β-estradiol (E2) or 4,4',4″-(4-propyl-[1H]pyrazole-1,3,5-triyl)tris-phenol (PPT; selective ERα agonist). We found that E2 and PPT induced greater aortic relaxation in female mice than in male mice, indicating ERα mediation, which was further validated by using ERα antagonism. Treatment with 1,3-bis(4-hydroxyphenyl)-4-methyl-5-[4-(2-piperidinylethoxy)phenol]-1H-pyrazole dihydrochloride (MPP dihydrochloride; ERα antagonist) attenuated PPT-mediated vessel relaxation in both sexes. ERα-mediated vessel relaxation was further validated by the absence of significant PPT-mediated relaxation in aortas isolated from ERα knockout mice. Treatment with a specific ERK inhibitor, PD-98059, reduced E2-induced vessel relaxation in both sexes but to a lesser extent in female mice. Furthermore, PD-98059 prevented PPT-induced vessel relaxation in both sexes. Both E2 and PPT treatment activated ERK as early as 5-10 min, which was attenuated by PD-98059 in aortic tissue, cultured primary vascular smooth muscle cells (VSMCs), and endothelial cells (ECs). Aortic rings denuded of endothelium showed no differences in vessel relaxation after E2 or PPT treatment, implicating a role of ECs in the observed sex differences. Here, our results are unique to show estrogen-stimulated rapid ERα signaling mediated by ERK activation in aortic tissue, as well as VSMCs and ECs in vitro, in regulating vascular function by using side-by-side comparisons in male and ovary-intact female mice in response to E2 or PPT. NEW & NOTEWORTHY Here, we assessed the estrogen receptor-α dependency of estrogenic effects in vasorelaxation of both male and ovary-intact female mice by performing side-by-side comparisons. Also, we describe the connection between estrogen-stimulated rapid estrogen receptor-α signaling and downstream ERK activation in regulating vascular function in male and ovary-intact female mice.
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Affiliation(s)
- Seong Chul Kim
- Department of Pharmacology, Tulane University School of Medicine , New Orleans, Louisiana
| | - Austin C Boese
- Department of Pharmacology, Tulane University School of Medicine , New Orleans, Louisiana
| | - Matthew H Moore
- Department of Pharmacology, Tulane University School of Medicine , New Orleans, Louisiana
| | - Rea M Cleland
- Department of Pharmacology, Tulane University School of Medicine , New Orleans, Louisiana
| | - Lin Chang
- Department of Internal Medicine, Cardiovascular Center, University of Michigan Medical Center , Ann Arbor, Michigan
| | - Patrice Delafontaine
- Heart and Vascular Institute, Tulane University School of Medicine , New Orleans, Louisiana
| | - Ke-Jie Yin
- Pittsburgh Institute of Brain Disorders and Recovery, Department of Neurology, University of Pittsburgh School of Medicine , Pittsburgh, Pennsylvania
| | - Jean-Pyo Lee
- Department of Physiology, Tulane University School of Medicine , New Orleans, Louisiana.,Center for Stem Cell Research and Regenerative Medicine, Tulane University School of Medicine , New Orleans, Louisiana
| | - Milton H Hamblin
- Department of Pharmacology, Tulane University School of Medicine , New Orleans, Louisiana
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Chang L, Xiong W, Zhao X, Fan Y, Guo Y, Garcia-Barria M, Zhang J, Jiang Z, Chen Y. Abstract P112: Bmal1 in Perivascular Adipose Tissues Regulates Blood Pressure Rhythmicity via Angiotensinogen. Hypertension 2017. [DOI: 10.1161/hyp.70.suppl_1.p112] [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] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background:
the perivascular adipose tissue (PVAT), surrounding vessel walls, constitutes a distinct functional integral layer of the vascular wall. Presence of a functional PVAT is beneficial for the regulation of vascular tone under physiological conditions while dysfunctional PVAT may promote damage of the vessel wall and development of cardiovascular diseases. However, there is little mechanistic information regarding the relationship between PVAT and blood pressure regulation.
Methods:
We investigated the vasoactivity of mouse vessel rings in response to homogenized PVAT and how Bmal1 and angiotensinogen in PVAT regulate the rhythmicity of blood pressure in mice.
Results:
Our results demonstrate that loss of Bmal1 in PVAT reduces blood pressure of mice during the rest phase. PVAT extracts significantly induce contractility of isolated blood vessel rings
in vit
ro in an endothelium independent manner, and the PVAT extracts from brown adipocyte selective Bmal1 deficient mice result in reduced vessel contractility. The capability of PVAT to stimulate vessel constriction is mediated by angiotensin II (Ang II) signaling present in PVAT evidenced by angiotensinogen being highly expressed in PVAT and the blockage of angiotensin II type 1 receptors in the isolated vessels significantly repressing the pro-contractile effect of PVAT extracts. Consistently, the angiotensinogen mRNA and Ang II levels in PVAT of Bmal1 deficient mice are significantly reduced. Deletion of angiotensinogen in PVAT results in reduced blood pressure in the rest phase as well, and vessel contractility of the PVAT extracts from angiotensinogen deficient mice is significantly reduced. Furthermore, Ang II infusion reduces Bmal1 expression in PVAT. Deletion of angiotensinogen in PVAT decreases expression and phosphorylation of casein kinase -2 alpha and -2 beta (CK2α and CD2β), in turn, enhancing Bmal1 phosphorylation.
Conclusions:
these data indicate that local Bmal1 in PVAT regulates angiotensinogen expression and secrets Ang II that acts on smooth muscle cells (SMCs) in the vessel walls to regulate vasoactivity and blood pressure.
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Cash BD, Pimentel M, Rao SSC, Weinstock L, Chang L, Heimanson Z, Lembo A. Repeat treatment with rifaximin improves irritable bowel syndrome-related quality of life: a secondary analysis of a randomized, double-blind, placebo-controlled trial. Therap Adv Gastroenterol 2017; 10:689-699. [PMID: 28932270 PMCID: PMC5598815 DOI: 10.1177/1756283x17726087] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [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: 02/27/2017] [Accepted: 07/05/2017] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND Diarrhea-predominant irritable bowel syndrome (IBS-D) impairs patient quality of life (QOL). Rifaximin is an oral, nonsystemic antibiotic indicated for IBS-D. The objective of this secondary analysis was to evaluate rifaximin retreatment on IBS-related QOL in patients with IBS-D. METHODS Patients received open-label rifaximin 550 mg three times daily for 2 weeks. Clinical responders [simultaneously meeting weekly response criteria for abdominal pain (⩾30% improvement from baseline in mean weekly pain score) and stool consistency (⩾50% decrease from baseline in number of days/week with Bristol Stool Scale (BSS) type 6 or 7 stools) during ⩾2 of first 4 weeks posttreatment] who relapsed during an up to 18-week treatment-free observation phase were randomly assigned to receive two 2-week courses of double-blind rifaximin or placebo, separated by 10 weeks. A validated 34-item IBS-QOL questionnaire examined patient responses in 8 domains. RESULTS The 2579 patients receiving open-label rifaximin experienced a mean improvement from baseline in IBS-QOL overall score of 54.9%. Responders to open-label rifaximin (n = 1074 of 2438 evaluable; 44.1%) had significantly greater improvement from baseline in IBS-QOL overall and all eight subdomain scores, including dysphoria, food avoidance, interference with activity, body image, and sexual function versus nonresponders at 4 weeks posttreatment (n = 1364; p < 0.001 for all comparisons). A significantly greater percentage of responders to open-label rifaximin achieved the minimally clinically important difference (MCID; ⩾14-point improvement from baseline) in the overall IBS-QOL score versus nonresponders [n = 561 (52.2%) versus n = 287 (21.0%); p < 0.0001]. Among 636 patients with IBS-D relapse, the MCID in the overall IBS-QOL score was achieved by a significantly greater percentage of patients receiving double-blind rifaximin versus placebo (38.6% versus 29.6%, respectively; p = 0.009). CONCLUSIONS Open-label and blinded retreatment with a short course (2 weeks) of rifaximin improved IBS-QOL in patients with IBS-D [ClinicalTrials.gov identifier: NCT01543178].
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Affiliation(s)
- Brooks D. Cash
- University of South Alabama, Digestive Health Center, 75 S. University Blvd, Suite 6000-B, Mobile, AL 36608, USA
| | - Mark Pimentel
- GI Motility Program, Division of Gastroenterology, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Satish S. C. Rao
- Section of Gastroenterology/Hepatology, Digestive Health Center, Medical College of Georgia Augusta University, Augusta, GA, USA
| | - Leonard Weinstock
- Specialists in Gastroenterology, LLC, Washington University School of Medicine, St Louis, MO, USA
| | - Lin Chang
- Division of Digestive Diseases/Gastroenterology, David Geffen School of Medicine at UCLA, UCLA, Los Angeles, CA, USA
| | | | - Anthony Lembo
- Gastroenterology, Beth Israel Deaconess Medical Center, Boston, MA, USA
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