99951
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Banerjee S, Radak T. Association between food insecurity, cardiorenal syndrome and all-cause mortality among low-income adults. Nutr Health 2019; 25:245-252. [PMID: 31464165 DOI: 10.1177/0260106019869069] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND Food insecurity is known to be a major public health issue. There is limited data on food insecurity and chronic disease in the general population. AIM We aimed to assess effect of food insecurity on mortality of individuals with chronic disease like cardiorenal syndrome (CRS). METHODS The study was conducted on participants aged 20 years or older in the United States living below the 130% Federal Poverty Level. We assessed food insecurity utilizing the Household Food Security Survey Module in NHANES survey for the years 1999 to 2010 with mortality follow-up. Prospective analysis was performed using complex samples Cox regression with adjustment for known confounders to determine the relationship of food insecurity and CRS. RESULTS Prevalence of food insecurity among the low-income population was 16.1% among males and 21.7% among females. The mean follow-up was 6.5 years. For all-cause mortality, the overall unadjusted hazard ratio (HR) of food insecurity to no food insecurity was 1.28 (95% confidence interval [CI], 1.18-1.37, p < 0.001). Adjusted HR was elevated, 2.81 (CI 1.57-5.05, p < 0.001), among participants who were CRS-positive and food insecure but closer to 1.0 (2.48 CI 1.73-3.55, p < 0.001) among those who were CRS-positive and food secure, after controlling for medical and demographic risk factors. CONCLUSIONS Food insecurity is associated with higher mortality than food security. Food insecurity also may modify the effect of CRS on all-cause mortality in a representative general population. Social policy, when addressing food insecurity, should be inclusive among those with specific chronic diseases.
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Affiliation(s)
| | - Timothy Radak
- Walden University School of Health Sciences, Baltimore, MD, USA
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99952
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Gupta RK, Rosenberg AZ, Bagnasco SM, Arend LJ. Renal crystal-storing histiocytosis involving glomeruli - A comprehensive clinicopathologic analysis. Ann Diagn Pathol 2019; 43:151403. [PMID: 31494491 DOI: 10.1016/j.anndiagpath.2019.151403] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Accepted: 08/28/2019] [Indexed: 11/28/2022]
Abstract
Crystal-storing histiocytosis (CSH) is a rare manifestation of monoclonal gammopathy in which histiocytes containing monoclonal proteins in their cytoplasm are found in various organs of the body including the kidney. Within the kidney, these monoclonal crystal-laden histiocytes have been described to occur in the interstitium (most commonly) or in the glomerular mesangium. CSH within glomerular capillary loops has rarely been reported. We describe three cases of CSH primarily affecting the glomerular capillaries and review the literature of CSH in general. Twenty cases of CSH involving the kidney are present in the literature; three describe CSH in glomeruli, only one of which showed histiocytes predominantly in glomerular capillary loops, while 15 had predominantly or solely interstitial CSH. Most cases involve IgG kappa crystals with only one case involving lambda light chain. Patients with CSH predominantly involving the glomerular capillaries showed a trend toward lower serum creatinine and proteinuria at presentation, and several patients with CSH lacked a definitive diagnosis of a monoclonal gammopathy at the time of diagnosis, emphasizing the role that kidney biopsy and particularly electron microscopy play in diagnosis of this entity.
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Affiliation(s)
- Rajib K Gupta
- Renal Pathology, Department of Pathology, Johns Hopkins University and Johns Hopkins Hospital, Baltimore, MD 21287, USA
| | - Avi Z Rosenberg
- Renal Pathology, Department of Pathology, Johns Hopkins University and Johns Hopkins Hospital, Baltimore, MD 21287, USA
| | - Serena M Bagnasco
- Renal Pathology, Department of Pathology, Johns Hopkins University and Johns Hopkins Hospital, Baltimore, MD 21287, USA
| | - Lois J Arend
- Renal Pathology, Department of Pathology, Johns Hopkins University and Johns Hopkins Hospital, Baltimore, MD 21287, USA.
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99953
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Zeng G, Wang Z, Huang Y, Abedin Z, Liu Y, Randhawa P. Cellular and viral miRNA expression in polyomavirus BK infection. Transpl Infect Dis 2019; 21:e13159. [PMID: 31410940 DOI: 10.1111/tid.13159] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 07/12/2019] [Accepted: 07/25/2019] [Indexed: 12/17/2022]
Abstract
Polyomavirus BK (BKV) is an important pathogen in kidney transplant patients. Regulation of BKV encoded microRNAs (miRNAs) is not well understood. Therefore, tubular epithelial cells infected with BKV were examined for changes in small RNA expression. The observed changes were further evaluated by real-time PCR and RNA-seq analysis of renal allograft biopsies. BKV-miR-B1-5p and BKV-miR-B1-3p showed a 1000-fold increase over 12 days but did not prevent cell lysis. Downregulation of host miR-10b and miR-30a could be confirmed on all three platforms evaluated. Whereas, the BKV genome expressed more 3p than 5p miRNA species, the reverse was true for the human genome. Decreased expression of TP53INP2, and increased expression of BCL2A1, IL-6, IL8 and other proinflammatory cytokines were shown in biopsies with BKV nephropathy. No change in expression was seen in miR-10a dependent expression of NKG2D ligands ULBP3, MICA, or MICB. In conclusion, BKV infection results in regulation of cellular genes regulated by and possibly amenable to therapies targeting miR-10 and miR-30.
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Affiliation(s)
- Gang Zeng
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Zijie Wang
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yuchen Huang
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | | | - Yang Liu
- PrimBio Research Institute LLC, Exton, PA, USA
| | - Parmjeet Randhawa
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
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99954
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Chen X, Li XF, Chen Y, Zhu S, Li HD, Chen SY, Wang JN, Pan XY, Bu FT, Huang C, Li J. Hesperetin derivative attenuates CCl 4-induced hepatic fibrosis and inflammation by Gli-1-dependent mechanisms. Int Immunopharmacol 2019; 76:105838. [PMID: 31473406 DOI: 10.1016/j.intimp.2019.105838] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 08/15/2019] [Accepted: 08/18/2019] [Indexed: 12/12/2022]
Abstract
Hepatic fibrosis, a common pathological feature and leading cause of various chronic liver diseases, still lacks effective therapy. Hesperetin derivative (HD) is a derivative of Traditional Chinese Medicine monomer isolated from the fruit peel of Citrusaurantium L. (Rutaceae). In the present study, we revealed the anti-fibrotic effects of HD in CCl4-induced mouse hepatic fibrosis model and in TGF-β1-activated LX-2 cells, in vivo and in vitro. Results showed that HD prevented CCl4-induced liver injury and histological damage. Consistently, HD inhibited the up-regulation of liver fibrogenesis markers α-SMA, Col1α1, Col3α1 and TIMP-1 in primary hepatic stellate cells (HSCs) and suppressed inflammatory responses in primary liver macrophages from hepatic fibrosis mice. Furthermore, HD promoted the apoptosis of activated HSCs, a key step in the onset of fibrosis regression. Mechanistically, the Hedgehog pathway was involved in HD-treated hepatic fibrosis, and HD specifically contributed to attenuate the aberrant expression of Glioma associated oncogene-1 (Gli-1). Interestingly, blockade of Gli-1 removed the inhibitory effect of HD on activated HSCs, indicating that Gli-1 may play a pivotal role in mediating the anti-fibrotic effect of HD in hepatic fibrosis. Collectively, our results suggest that HD may be a potential anti-fibrotic Traditional Chinese Medicine monomer for the treatment of hepatic fibrosis.
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Affiliation(s)
- Xin Chen
- School of Pharmacy, Anhui Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, Anhui Medical University, Hefei 230032, China; The Key Laboratory of Anti-inflammatory and Immune Medicines, Anhui Medical University, Ministry of Education, Hefei 230032, China; Institute for Liver Diseases of Anhui Medical University, ILD-AMU, Anhui Medical University, Hefei 230032, China
| | - Xiao-Feng Li
- School of Pharmacy, Anhui Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, Anhui Medical University, Hefei 230032, China; The Key Laboratory of Anti-inflammatory and Immune Medicines, Anhui Medical University, Ministry of Education, Hefei 230032, China; Institute for Liver Diseases of Anhui Medical University, ILD-AMU, Anhui Medical University, Hefei 230032, China
| | - Yu Chen
- School of Pharmacy, Anhui Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, Anhui Medical University, Hefei 230032, China; The Key Laboratory of Anti-inflammatory and Immune Medicines, Anhui Medical University, Ministry of Education, Hefei 230032, China; Institute for Liver Diseases of Anhui Medical University, ILD-AMU, Anhui Medical University, Hefei 230032, China
| | - Sai Zhu
- School of Pharmacy, Anhui Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, Anhui Medical University, Hefei 230032, China; The Key Laboratory of Anti-inflammatory and Immune Medicines, Anhui Medical University, Ministry of Education, Hefei 230032, China; Institute for Liver Diseases of Anhui Medical University, ILD-AMU, Anhui Medical University, Hefei 230032, China
| | - Hai-Di Li
- School of Pharmacy, Anhui Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, Anhui Medical University, Hefei 230032, China; The Key Laboratory of Anti-inflammatory and Immune Medicines, Anhui Medical University, Ministry of Education, Hefei 230032, China; Institute for Liver Diseases of Anhui Medical University, ILD-AMU, Anhui Medical University, Hefei 230032, China
| | - Si-Yu Chen
- School of Pharmacy, Anhui Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, Anhui Medical University, Hefei 230032, China; The Key Laboratory of Anti-inflammatory and Immune Medicines, Anhui Medical University, Ministry of Education, Hefei 230032, China; Institute for Liver Diseases of Anhui Medical University, ILD-AMU, Anhui Medical University, Hefei 230032, China
| | - Jia-Nan Wang
- School of Pharmacy, Anhui Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, Anhui Medical University, Hefei 230032, China; The Key Laboratory of Anti-inflammatory and Immune Medicines, Anhui Medical University, Ministry of Education, Hefei 230032, China; Institute for Liver Diseases of Anhui Medical University, ILD-AMU, Anhui Medical University, Hefei 230032, China
| | - Xue-Yin Pan
- School of Pharmacy, Anhui Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, Anhui Medical University, Hefei 230032, China; The Key Laboratory of Anti-inflammatory and Immune Medicines, Anhui Medical University, Ministry of Education, Hefei 230032, China; Institute for Liver Diseases of Anhui Medical University, ILD-AMU, Anhui Medical University, Hefei 230032, China
| | - Fang-Tian Bu
- School of Pharmacy, Anhui Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, Anhui Medical University, Hefei 230032, China; The Key Laboratory of Anti-inflammatory and Immune Medicines, Anhui Medical University, Ministry of Education, Hefei 230032, China; Institute for Liver Diseases of Anhui Medical University, ILD-AMU, Anhui Medical University, Hefei 230032, China
| | - Cheng Huang
- School of Pharmacy, Anhui Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, Anhui Medical University, Hefei 230032, China; The Key Laboratory of Anti-inflammatory and Immune Medicines, Anhui Medical University, Ministry of Education, Hefei 230032, China; Institute for Liver Diseases of Anhui Medical University, ILD-AMU, Anhui Medical University, Hefei 230032, China.
| | - Jun Li
- School of Pharmacy, Anhui Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, Anhui Medical University, Hefei 230032, China; The Key Laboratory of Anti-inflammatory and Immune Medicines, Anhui Medical University, Ministry of Education, Hefei 230032, China; Institute for Liver Diseases of Anhui Medical University, ILD-AMU, Anhui Medical University, Hefei 230032, China.
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99955
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Su Y, Yao S, Zhao S, Li J, Li H. LncRNA CCAT1 functions as apoptosis inhibitor in podocytes via autophagy inhibition. J Cell Biochem 2019; 121:621-631. [PMID: 31468575 PMCID: PMC6899777 DOI: 10.1002/jcb.29307] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2019] [Accepted: 06/18/2019] [Indexed: 12/20/2022]
Abstract
Podocyte apoptosis importantly contributes to various kidney diseases. Long noncoding RNAs Colon cancer‐associated transcript‐1 (CCAT‐1) has been demonstrated for a critical role in cell proliferation. In the present study, the relationship between CCAT1 and popdocyte impairment, and the underlying mechanism was investigated. Podocytes were isolated from mice and then treated with tumor necrosis factor‐α to simulate podocyte injury. After developed CCAT1 overexpression or knockdown, cell viabilities were determined with the CCK‐8 assay, apoptosis was examined with Flow cytometry, the autophagy was observed by Western blot. Furthermore, phosphorylated PI3K and Akt expressions were examined. We found that after CCAT1 overexpression, the cell viability was significantly increased, apoptosis was significantly decreased, and autophagy was significantly inhibited, which was indicated by induced P62, LC3B‐I and decreased LC3B‐II. In addition, CCAT1 overexpression induced the levels of phosphorylated PI3K and Akt. With Rap treatment, these effects by CCAT1 were reversed. Furthermore, the results contrary to the effects by CCAT1 overexpression were presented after CCAT1 knockdown, and this was inhibited by 3‐MA. Taken together, our results suggested that CCAT1 induction critically participated in apoptosis inhibition in podocytes through autophagy inhibition via increasing PI3K/Akt signaling. This might act as a promising therapeutic intervention for renal diseases associated with podocyte apoptosis.
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Affiliation(s)
- Yanyan Su
- Department of Nephrology, Huadu District People's Hospital of Guangzhou, Southern Medical University, Guangzhou, China
| | - Shuwen Yao
- Department of Nephrology, Huadu District People's Hospital of Guangzhou, Southern Medical University, Guangzhou, China
| | - Shili Zhao
- Department of Nephrology, Huadu District People's Hospital of Guangzhou, Southern Medical University, Guangzhou, China
| | - Jinchun Li
- Department of Nephrology, Huadu District People's Hospital of Guangzhou, Southern Medical University, Guangzhou, China
| | - Hongyan Li
- Department of Nephrology, Huadu District People's Hospital of Guangzhou, Southern Medical University, Guangzhou, China
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99956
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Xu W, Li C, Qian G, Huang Y, Zhao L. [Association of metabolic syndrome with chronic kidney disease in premenopausal and postmenopausal women]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2019; 39:861-866. [PMID: 31340922 DOI: 10.12122/j.issn.1673-4254.2019.07.18] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
OBJECTIVE To explore the relationship between metabolic syndrome (MS) and the risk for chronic kidney disease (CKD) in premenopausal and postmenopausal women. METHODS We conducted a cross-sectional study among 1346 community-based women from June to October 2012 and collected the data of personal history, lifestyle, physical measures and laboratory indicators. The diagnosis of CKD was established for an eGFR of less than 60 mL/min per 1.73 m2 or albuminuria. The diagnosis of metabolic syndrome was based on the International Diabetes Federation Guide. According to an epidemiological survey in Guangdong province, women older than 48.9 years were classified as having a postmenopausal status. The prevalence of MS and CKD was determined in both the premenopausal and postmenopausal women, and the association between MS and CKD was analyzed using logistic regression models. RESULTS MS was significantly correlated with CKD in premenopausal women in both unadjusted analyses (OR=3.10, 95% CI: 1.32-7.28, P=0.009) and in analysis after adjustment for potential confounders (OR=4.09, 95% CI: 1.63- 10.32, P=0.003). When adjusted for diabetes, hypertension, and hyperuricemia, no correlation was found between MS and CKD in premenopausal women (OR=1.56, 95% CI: 0.31-7.63, P= 0.592); in the unadjusted analyses, MS was significantly correlated with CKD in postmenopausal women (P < 0.001). After further adjustment for age, education status, current smoking, physical inactivity, and current drinking, MS was still significantly correlated with CKD (OR=2.60, 95% CI: 1.69-3.99, P < 0.001). When adjusted for diabetes, hypertension, and hyperuricemia, the correlation between MS and CKD was still significant (OR=1.61, 95% CI: 1.09-2.37, P=0.018). In the unadjusted model, a high blood pressure (OR=2.77, 95%CI: 1.57-4.89, P < 0.001), an elevated serum triglyceride level (OR=1.84, 95%CI: 1.16-2.90, P=0.009) and a high fast glucose level (OR=2.07, 95%CI: 1.30-3.28, P=0.002) were all significantly correlated with CKD in postmenopausal women. After adjusting for age, current smoking, current alcohol use, education status and physical inactivity, a high blood pressure (OR=2.28, 95%CI: 1.22-4.26, P=0.01), a high serum triglyceride level (OR=1.71, 95%CI: 1.03-2.86, P=0.039) and a high fast glucose (OR=2.25, 95%CI: 1.36-3.73, P=0.002) were still significantly correlated with CKD in postmenopausal women. Blood pressure, serum triglyceride level, fast glucose, serum HDL cholesterol level and central obesity were not correlated with CKD in either the unadjusted model or adjusted model in premenopausal women (P > 0.05). CONCLUSIONS MS is correlated with CKD in both premenopausal and postmenopausal women, and the association is dependent on diabetes, hypertension, and hyperuricemia in premenopausal women but not in postmenopausal women.
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Affiliation(s)
- Weicheng Xu
- Department of Nephrology, Third Affiliated Hospital of Southern Medical University, Guangzhou 510630, China
| | - Chijian Li
- Department of Nephrology, Third Affiliated Hospital of Southern Medical University, Guangzhou 510630, China
| | - Ge Qian
- Department of Nephrology, Third Affiliated Hospital of Southern Medical University, Guangzhou 510630, China
| | - Yuxiang Huang
- Department of Nephrology, Third Affiliated Hospital of Southern Medical University, Guangzhou 510630, China
| | - Liqin Zhao
- Health Management Center, Third Affiliated Hospital of Southern Medical University, Guangzhou 510630, China
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99957
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Tavakoli M, Tsekouras K, Day R, Dunn KW, Pressé S. Quantitative Kinetic Models from Intravital Microscopy: A Case Study Using Hepatic Transport. J Phys Chem B 2019; 123:7302-7312. [PMID: 31298856 PMCID: PMC6857640 DOI: 10.1021/acs.jpcb.9b04729] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The liver performs critical physiological functions, including metabolizing and removing substances, such as toxins and drugs, from the bloodstream. Hepatotoxicity itself is intimately linked to abnormal hepatic transport, and hepatotoxicity remains the primary reason drugs in development fail and approved drugs are withdrawn from the market. For this reason, we propose to analyze, across liver compartments, the transport kinetics of fluorescein-a fluorescent marker used as a proxy for drug molecules-using intravital microscopy data. To resolve the transport kinetics quantitatively from fluorescence data, we account for the effect that different liver compartments (with different chemical properties) have on fluorescein's emission rate. To do so, we develop ordinary differential equation transport models from the data where the kinetics is related to the observable fluorescence levels by "measurement parameters" that vary across different liver compartments. On account of the steep non-linearities in the kinetics and stochasticity inherent to the model, we infer kinetic and measurement parameters by generalizing the method of parameter cascades. For this application, the method of parameter cascades ensures fast and precise parameter estimates from noisy time traces.
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Affiliation(s)
- Meysam Tavakoli
- Department of Physics, Indiana University-Purdue University, Indianapolis, Indiana 46202, United States
| | | | - Richard Day
- Department of Cellular and Integrative Physiology, Indiana University School of Medicine, Indianapolis, Indiana 46202, United States
| | - Kenneth W. Dunn
- Department of Medicine and Biochemistry, Indiana University School of Medicine, Indianapolis, Indiana 46202, United States
| | - Steve Pressé
- Center for Biological Physics, Arizona State University, Tempe, Arizona 85287, United States
- School of Molecular Sciences, Arizona State University, Tempe, Arizona 85287, United States
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99958
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Gu J, Huang W, Zhang W, Zhao T, Gao C, Gan W, Rao M, Chen Q, Guo M, Xu Y, Xu YH. Sodium butyrate alleviates high-glucose-induced renal glomerular endothelial cells damage via inhibiting pyroptosis. Int Immunopharmacol 2019; 75:105832. [PMID: 31473434 DOI: 10.1016/j.intimp.2019.105832] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 08/11/2019] [Accepted: 08/14/2019] [Indexed: 01/04/2023]
Abstract
We recently found that Sodium butyrate (NaB) possesses anti-inflammatory effects in diabetic nephropathy (DN) mouse model and in high-glucose induced mouse glomerular mesangial cells. Pyroptosis is a programmed cell death accompanied with the release of pro-inflammatory factors. Gasdermin D (GSDMD) is a novel discovered pivotal executive protein of pyroptosis, which can be cleaved by inflammatory caspases. The aim of our study is to verify if NaB have some effects against high-glucose induces pyroptosis in renal Glomerular endothelial cells (GECs). For this aim, human GECs were cultured and exposed to high-glucose. Exogenous NaB, caspase 1 inhibitor Ac-YVAD-CMK (A-Y-C) or knockdown GSDMD by siRNA were used. We found high glucose could increase Propidium Iodide (PI) positive cells and elevate release of lactate dehydrogenase (LDH), Interleukin 1 beta (IL-1β) and Interleukin 18 (IL-18); protein levels of GSDMD, GSDMD N-terminal domain (GSDMD-N) and cleaved-caspase-1 were also elevated. Effect of NaB on LDH release and PI positive cells was further enhanced by inhibiting caspase 1-GSDMD. In addition, high glucose-induced nuclear factor kappa-B (NF-κB)/NF-κB inhibitor α (IκB-α) signaling pathway was reversed by NaB or A-Y-C administration. In conclusion, NaB could ameliorate high-glucose induced GECs via caspase1-GSDMD canonical pyroptosis pathway; and NF-κB/IκB-α signaling pathway was involved in it.
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Affiliation(s)
- Junling Gu
- Faculty of Chinese Medicine, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Avenida Wai Long, Taipa, Macao; Luzhou Key Laboratory of Cardiovascular and Metabolic Diseases, Department of Endocrinology, Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, PR China
| | - Wei Huang
- Luzhou Key Laboratory of Cardiovascular and Metabolic Diseases, Department of Endocrinology, Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, PR China
| | - Wenqian Zhang
- Faculty of Chinese Medicine, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Avenida Wai Long, Taipa, Macao
| | - Tingting Zhao
- Faculty of Chinese Medicine, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Avenida Wai Long, Taipa, Macao
| | - Chenlin Gao
- Faculty of Chinese Medicine, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Avenida Wai Long, Taipa, Macao; Luzhou Key Laboratory of Cardiovascular and Metabolic Diseases, Department of Endocrinology, Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, PR China
| | - Wenjun Gan
- Faculty of Chinese Medicine, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Avenida Wai Long, Taipa, Macao
| | - Mingyue Rao
- Faculty of Chinese Medicine, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Avenida Wai Long, Taipa, Macao; Luzhou Key Laboratory of Cardiovascular and Metabolic Diseases, Department of Endocrinology, Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, PR China
| | - Qing Chen
- Luzhou Key Laboratory of Cardiovascular and Metabolic Diseases, Department of Endocrinology, Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, PR China
| | - Man Guo
- Luzhou Key Laboratory of Cardiovascular and Metabolic Diseases, Department of Endocrinology, Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, PR China
| | - Yong Xu
- Faculty of Chinese Medicine, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Avenida Wai Long, Taipa, Macao; Luzhou Key Laboratory of Cardiovascular and Metabolic Diseases, Department of Endocrinology, Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, PR China.
| | - You-Hua Xu
- Faculty of Chinese Medicine, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Avenida Wai Long, Taipa, Macao.
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99959
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Lanata CM, Paranjpe I, Nititham J, Taylor KE, Gianfrancesco M, Paranjpe M, Andrews S, Chung SA, Rhead B, Barcellos LF, Trupin L, Katz P, Dall'Era M, Yazdany J, Sirota M, Criswell LA. A phenotypic and genomics approach in a multi-ethnic cohort to subtype systemic lupus erythematosus. Nat Commun 2019; 10:3902. [PMID: 31467281 PMCID: PMC6715644 DOI: 10.1038/s41467-019-11845-y] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Accepted: 07/13/2019] [Indexed: 01/05/2023] Open
Abstract
Systemic lupus erythematous (SLE) is a heterogeneous autoimmune disease in which outcomes vary among different racial groups. Here, we aim to identify SLE subgroups within a multiethnic cohort using an unsupervised clustering approach based on the American College of Rheumatology (ACR) classification criteria. We identify three patient clusters that vary according to disease severity. Methylation association analysis identifies a set of 256 differentially methylated CpGs across clusters, including 101 CpGs in genes in the Type I Interferon pathway, and we validate these associations in an external cohort. A cis-methylation quantitative trait loci analysis identifies 744 significant CpG-SNP pairs. The methylation signature is enriched for ethnic-associated CpGs suggesting that genetic and non-genetic factors may drive outcomes and ethnic-associated methylation differences. Our computational approach highlights molecular differences associated with clusters rather than single outcome measures. This work demonstrates the utility of applying integrative methods to address clinical heterogeneity in multifactorial multi-ethnic disease settings.
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Affiliation(s)
- Cristina M Lanata
- Russell/Engleman Rheumatology Research Center, Department of Medicine, University of California San Francisco, San Francisco, CA, USA
| | - Ishan Paranjpe
- Bakar Computational Health Sciences Institute, University of California, San Francisco, CA, USA
- Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Joanne Nititham
- Russell/Engleman Rheumatology Research Center, Department of Medicine, University of California San Francisco, San Francisco, CA, USA
| | - Kimberly E Taylor
- Russell/Engleman Rheumatology Research Center, Department of Medicine, University of California San Francisco, San Francisco, CA, USA
| | - Milena Gianfrancesco
- Russell/Engleman Rheumatology Research Center, Department of Medicine, University of California San Francisco, San Francisco, CA, USA
| | - Manish Paranjpe
- Bakar Computational Health Sciences Institute, University of California, San Francisco, CA, USA
| | - Shan Andrews
- Bakar Computational Health Sciences Institute, University of California, San Francisco, CA, USA
| | - Sharon A Chung
- Russell/Engleman Rheumatology Research Center, Department of Medicine, University of California San Francisco, San Francisco, CA, USA
| | | | | | - Laura Trupin
- Russell/Engleman Rheumatology Research Center, Department of Medicine, University of California San Francisco, San Francisco, CA, USA
| | - Patricia Katz
- Russell/Engleman Rheumatology Research Center, Department of Medicine, University of California San Francisco, San Francisco, CA, USA
| | - Maria Dall'Era
- Russell/Engleman Rheumatology Research Center, Department of Medicine, University of California San Francisco, San Francisco, CA, USA
| | - Jinoos Yazdany
- Russell/Engleman Rheumatology Research Center, Department of Medicine, University of California San Francisco, San Francisco, CA, USA
| | - Marina Sirota
- Bakar Computational Health Sciences Institute, University of California, San Francisco, CA, USA
| | - Lindsey A Criswell
- Russell/Engleman Rheumatology Research Center, Department of Medicine, University of California San Francisco, San Francisco, CA, USA.
- Institute for Human Genetics, University of California, San Francisco, San Francisco, CA, USA.
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99960
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Castro LRP, Calvet FC, Sousa KL, Silva VP, Lobo PS, Penha ET, Guerra SFS, Bezerra DAM, Mascarenhas JDP, Pinheiro HHC, Costa IB, Resque HR, Soares LS. Prevalence of rotavirus and human bocavirus in immunosuppressed individuals after renal transplantation in the Northern Region of Brazil. J Med Virol 2019; 91:2125-2133. [PMID: 31429939 DOI: 10.1002/jmv.25569] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Accepted: 08/05/2019] [Indexed: 12/16/2022]
Abstract
Immunosuppressive therapy causes severe impairment of host defense and diarrhea is a frequent complication in renal transplant recipients. This study aimed to describe the occurrence of Rotavirus A (RVA) and Human Bocavirus (HBoV) in fecal samples of immunosuppressed patients submitted to renal transplantation during posttransplant follow-up. A longitudinal study was carried out involving a 25-patient cohort, selected for kidney transplantation. A total of 126 fecal samples were collected between May 2014 and May 2016. Molecular techniques were used to detect and characterize circulating RVA and HBoV genotypes and statistical analysis were applied to verify the association between epidemiological and clinical characteristics. The prevalence of RVA and HBoV was 24% (6/25) and 40% (10/25), respectively. Among RVA and HBoV positive cases, the majority was female; did not conduct water treatment nor had adequate sewage facilities. The most detected genotypes were RVA G3 (62.5%) and HBoV-3 (95%). Phylogenetic analysis of HBoV strains indicated that studied samples were similar to those found in Asian and American countries. The present study point out the circulation of these viral agents among immunosuppressed individuals and these findings will enable the construction of new knowledge and care perspectives on the cause of diarrhea in this population.
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Affiliation(s)
- Luanda R P Castro
- Postgraduate Program in Epidemiology and Surveillance in Health, Evandro Chagas Institute, Ananindeua, Pará, Brazil
| | - Flávio C Calvet
- Laboratory of Rotavirus, Virology Section, Evandro Chagas Institute, Health Surveillance Secretariat, Brazilian Ministry of Health, Ananindeua, Pará, Brazil
| | - Karoline L Sousa
- Laboratory of Rotavirus, Virology Section, Evandro Chagas Institute, Health Surveillance Secretariat, Brazilian Ministry of Health, Ananindeua, Pará, Brazil
| | - Victor P Silva
- Laboratory of Rotavirus, Virology Section, Evandro Chagas Institute, Health Surveillance Secretariat, Brazilian Ministry of Health, Ananindeua, Pará, Brazil
| | - Patrícia S Lobo
- Laboratory of Rotavirus, Virology Section, Evandro Chagas Institute, Health Surveillance Secretariat, Brazilian Ministry of Health, Ananindeua, Pará, Brazil
| | - Edvaldo T Penha
- Laboratory of Rotavirus, Virology Section, Evandro Chagas Institute, Health Surveillance Secretariat, Brazilian Ministry of Health, Ananindeua, Pará, Brazil
| | - Sylvia F S Guerra
- Laboratory of Rotavirus, Virology Section, Evandro Chagas Institute, Health Surveillance Secretariat, Brazilian Ministry of Health, Ananindeua, Pará, Brazil
| | - Delana A M Bezerra
- Laboratory of Rotavirus, Virology Section, Evandro Chagas Institute, Health Surveillance Secretariat, Brazilian Ministry of Health, Ananindeua, Pará, Brazil
| | - Joana D P Mascarenhas
- Laboratory of Rotavirus, Virology Section, Evandro Chagas Institute, Health Surveillance Secretariat, Brazilian Ministry of Health, Ananindeua, Pará, Brazil
| | - Helder H C Pinheiro
- Center for Tropical Medicine, Federal University of Pará, Belém, Pará, Brazil
| | - Igor B Costa
- Laboratory of Rotavirus, Virology Section, Evandro Chagas Institute, Health Surveillance Secretariat, Brazilian Ministry of Health, Ananindeua, Pará, Brazil
| | - Hugo R Resque
- Laboratory of Rotavirus, Virology Section, Evandro Chagas Institute, Health Surveillance Secretariat, Brazilian Ministry of Health, Ananindeua, Pará, Brazil
| | - Luana S Soares
- Laboratory of Rotavirus, Virology Section, Evandro Chagas Institute, Health Surveillance Secretariat, Brazilian Ministry of Health, Ananindeua, Pará, Brazil
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99961
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Wolfson AM, Kobashigawa JA. Genetic and Genomic Approaches to Predict Cardiac Allograft Rejection. CURRENT CARDIOVASCULAR RISK REPORTS 2019. [DOI: 10.1007/s12170-019-0626-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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99962
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Sowa PM, Purtell L, Hoy WE, Healy HG, Bonner A, Connelly LB. Utilization and Costs of Health Care in a Kidney Supportive Care Program. J Palliat Care 2019; 35:176-184. [PMID: 31456473 DOI: 10.1177/0825859719868174] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Kidney supportive care (KSC) is a patient-centered model of multidisciplinary care designed for patients with advanced chronic kidney disease (CKD) and end-stage kidney disease (ESKD). Our goal was to characterize the types, frequencies, and costs of services accessed by patients enrolled in a KSC program. We analyzed health care utilization data prospectively collected from 102 patients who enrolled in the KSC program during the first 52 weeks of its existence. The data comprised program appointments, emergency department presentations, ambulance service use, outpatient visits, inpatient episodes, and dialysis treatments made within the Brisbane area of Metro North. Costs of resource use were estimated using Queensland Health funding principles and guidelines. Analyses included descriptive statistics, correlations, and multivariate regressions. During the median program participation of 22 weeks, patients had 3975 contacts with health care, with the total value of services amounting to nearly A$3 million. Dialysis treatments accounted for 70% of visits and 49% of costs. Patients receiving dialysis had higher utilization of outpatient services and associated cost, compared to patients who were not dialyzed. The presence of diabetes and the choice of conservative pathway were both predictors of higher frequency and cost of services. Longer program participation was associated with lower weekly utilization and cost. The program attracted patients representing various characteristics, pathways, needs, and outcomes. Exploring these patterns will enable better understanding of the patient population and improved service planning, in KSC and similar programs that aim to comprehensively address the needs of patients with advanced CKD and ESKD.
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Affiliation(s)
- P Marcin Sowa
- NHMRC Chronic Kidney Disease Centre of Research Excellence, The University of Queensland, Herston, Queensland, Australia.,Centre for the Business and Economics of Health, The University of Queensland, Woolloongabba, Queensland, Australia
| | - Louise Purtell
- NHMRC Chronic Kidney Disease Centre of Research Excellence, The University of Queensland, Herston, Queensland, Australia.,Faculty of Health, School of Nursing, Queensland University of Technology, Kelvin Grove, Queensland, Australia.,Kidney Health Service, Metro North Hospital and Health Service, Queensland Health, Herston, Queensland, Australia
| | - Wendy E Hoy
- NHMRC Chronic Kidney Disease Centre of Research Excellence, The University of Queensland, Herston, Queensland, Australia.,Faculty of Medicine, The University of Queensland, Herston, Queensland, Australia
| | - Helen G Healy
- NHMRC Chronic Kidney Disease Centre of Research Excellence, The University of Queensland, Herston, Queensland, Australia.,Kidney Health Service, Metro North Hospital and Health Service, Queensland Health, Herston, Queensland, Australia.,Faculty of Medicine, The University of Queensland, Herston, Queensland, Australia
| | - Ann Bonner
- NHMRC Chronic Kidney Disease Centre of Research Excellence, The University of Queensland, Herston, Queensland, Australia.,Faculty of Health, School of Nursing, Queensland University of Technology, Kelvin Grove, Queensland, Australia.,Kidney Health Service, Metro North Hospital and Health Service, Queensland Health, Herston, Queensland, Australia
| | - Luke B Connelly
- NHMRC Chronic Kidney Disease Centre of Research Excellence, The University of Queensland, Herston, Queensland, Australia.,Centre for the Business and Economics of Health, The University of Queensland, Woolloongabba, Queensland, Australia.,Department of Sociology and Business Law, The University of Bologna, Bologna, Italy
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99963
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Li X, Tang M, Yao X, Zhang N, Fan J, Zhou N, Sun Q, Chen Z, Meng Q, Lei L, Zhang H, Ling C, Hua L, Chen X, Liu X. A clinicopathological comparison between IgA nephropathy and Henoch–Schönlein purpura nephritis in children: use of the Oxford classification. Clin Exp Nephrol 2019; 23:1382-1390. [DOI: 10.1007/s10157-019-01777-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Accepted: 08/13/2019] [Indexed: 12/13/2022]
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99964
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Abstract
Acute kidney injury (AKI), a major public health problem associated with high mortality and increased risk of progression towards end-stage renal disease, is characterized by the activation of intra-renal haemostatic and inflammatory processes. Platelets, which are present in high numbers in the circulation and can rapidly release a broad spectrum of bioactive mediators, are important acute modulators of inflammation and haemostasis, as they are the first cells to arrive at sites of acute injury, where they interact with endothelial cells and leukocytes. Diminished control of platelet reactivity by endothelial cells and/or an increased release of platelet-activating mediators can lead to uncontrolled platelet activation in AKI. As increased platelet sequestration and increased expression levels of the markers P-selectin, thromboxane A2, CC-chemokine ligand 5 and platelet factor 4 on platelets have been reported in kidneys following AKI, platelet activation likely plays a part in AKI pathology. Results from animal models and some clinical studies highlight the potential of antiplatelet therapies in the preservation of renal function in the context of AKI, but as current strategies also affect other cell types and non-platelet-derived mediators, additional studies are required to further elucidate the extent of platelet contribution to the pathology of AKI and to determine the best therapeutic approach by which to specifically target related pathogenic pathways.
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Affiliation(s)
- Marcel P B Jansen
- Department of Pathology, Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands
| | - Sandrine Florquin
- Department of Pathology, Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands
| | - Joris J T H Roelofs
- Department of Pathology, Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands.
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99965
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Fadda LM, Alhusaini AM, Ali HM, Hasan IH, Badr AM, Zakaria EA. Cross Talk Between TGF-β and JAK Expressions and Nepherotoxicity Induced by Tetrachloromethane: Role of Phytotherapy. Dose Response 2019; 17:1559325819871755. [PMID: 31516401 PMCID: PMC6719478 DOI: 10.1177/1559325819871755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 07/21/2019] [Accepted: 08/01/2019] [Indexed: 11/22/2022] Open
Abstract
The aim of the current study is to assess the effectiveness of milk thistle seeds (Mth) in combination with Taraxacum officinale (Tof) and/or Camellia sinensis (Csin) against tetrachloromethane (Tcm) renotoxicity in rats. Tetrachloromethane was injected in a single dose, followed by 1-month treatments with Mth, Tof, and Csin alone or in combination. Serum urea, uric acid, and creatinine levels were significantly increased matched with the control group. Masson trichrome stain revealed increase in the deposition of fibrous tissue in the interstitium between the tubules and the renal corpuscles. Immunohistochemical analysis of kidney tissues revealed that Tcm induced an increase in the immune response of tumor growth factor β (TGF-β) and Janus kinase (JAK) protein expressions and cysteine–aspartic acid protease 3 (caspase 3), while B-cell lymphoma 2 (Bcl2) was downregulated. Treatment with the antioxidants in question either alone or in combination ameliorated all kidney function parameters and showed mild immune reactivity toward TGF-β and JAK protein expressions in blood vessels and glomeruli in the kidney tissues and downregulated caspase 3 and activated Bcl2 protein expression. The combination regimen of the 3 antioxidants showed the most significant renoprotective effect. This was also confirmed histopathologically. It was concluded that the antioxidant mixture is considered as a promising candidate toward renal dysfunction and immune reactivity induced by Tcm and other toxicants.
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Affiliation(s)
- Laila M Fadda
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Ahlam M Alhusaini
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Hanaa M Ali
- Common First Year, King Saud University, Riyadh, Saudi Arabia.,Department of Genetics and Cytology, National Research Centre, Dokki, Egypt
| | - Iman H Hasan
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Amira M Badr
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia.,Department of Pharmacology and Toxicology, College of Pharmacy, AIN Shams University, Cairo, Egypt
| | - Enas A Zakaria
- Pharmaceutics Department, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
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99966
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Park SE, Hwang JH, Choi JH, Kim SH, Choi JC, Jang JS, Kim HJ, Park SW, Seok JW, Hwang IG. Incidence, Risk Factors, and Clinical Outcomes of Acute Kidney Injury Caused by Palliative Chemotherapy in Lung Cancer. J Cancer 2019; 10:5332-5338. [PMID: 31632478 PMCID: PMC6775698 DOI: 10.7150/jca.28399] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Accepted: 08/11/2019] [Indexed: 11/25/2022] Open
Abstract
Purpose: Acute kidney injury (AKI) affects cancer therapy outcome and increases morbidity and mortality in cancer patients. We investigated the incidence, risk factors, and clinical outcomes of AKI caused by palliative chemotherapy in lung cancer patients. Materials and Methods: Between January 2005 and November 2014, 207 lung cancer patients who had been treated with first-line palliative chemotherapy were enrolled. Renal function was assessed during every cycle of chemotherapy. AKI was defined based on changes in serum creatinine levels as described in the Kidney Disease: Improving Global Outcomes guidelines. Clinical outcomes were evaluated depending on AKI occurrence during the first-line chemotherapy. Results: Of the 207 patients, 36 (17.4%) experienced AKI. Among the 36 patients who developed AKI during chemotherapy, 33 (91.8%) had AKI stage I. Although 19 patients (52.7%) with AKI during chemotherapy progressed to chronic kidney disease (CKD), no patients were reported to progress to end-stage renal disease (ESRD). The number of chemotherapy cycles was independently associated with chemotherapy-induced AKI in multivariate analysis (OR = 1.71, 95% CI 1.29-2.26, p < 0.001). The median follow-up duration was 83 months. Patients with AKI during chemotherapy (AKI group) showed significantly longer time to treatment failure than patients without AKI (non-AKI group) (4.2 vs. 2.5 months, p < 0.001). However, the median overall survival (11.7 vs. 8.8 months, p = 0.147) and progression-free survival (5.5 vs. 5.2 months, p = 0.347) were not different between the groups. Conclusions: AKI that developed during chemotherapy was mostly of mild degree and its prognosis was favorable. The occurrence of AKI was associated with the number of chemotherapy cycles administered. AKI did not adversely affect survival of lung cancer patients during chemotherapy.
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Affiliation(s)
- Song Ee Park
- Division of Hemato-oncology, Department of Internal Medicine, Chung-Ang University College of Medicine, Seoul, Korea
| | - Jin Ho Hwang
- Division of Nephrology, Department of Internal Medicine, Chung-Ang University College of Medicine, Seoul, Korea
| | - Jin Hwa Choi
- Department of Radiation Oncology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Su-Hyun Kim
- Division of Nephrology, Department of Internal Medicine, Chung-Ang University College of Medicine, Seoul, Korea
| | - Jae Chol Choi
- Division of Pulmonology, Department of Internal Medicine, Chung-Ang University College of Medicine, Seoul, Korea
| | - Joung Soon Jang
- Division of Hemato-oncology, Department of Internal Medicine, Chung-Ang University College of Medicine, Seoul, Korea
| | - Hee Jun Kim
- Division of Hemato-oncology, Department of Internal Medicine, Chung-Ang University College of Medicine, Seoul, Korea
| | - Suk Won Park
- Department of Radiation Oncology, Myungji Hospital, Goyang, Korea
| | - Ju Won Seok
- Department of Nuclear Medicine, Chung-Ang University College of Medicine, Seoul, Korea
| | - In Gyu Hwang
- Division of Hemato-oncology, Department of Internal Medicine, Chung-Ang University College of Medicine, Seoul, Korea
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99967
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Delsing L, Kallur T, Zetterberg H, Hicks R, Synnergren J. Enhanced xeno-free differentiation of hiPSC-derived astroglia applied in a blood-brain barrier model. Fluids Barriers CNS 2019; 16:27. [PMID: 31462266 PMCID: PMC6714544 DOI: 10.1186/s12987-019-0147-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2019] [Accepted: 07/30/2019] [Indexed: 12/20/2022] Open
Abstract
Background Human induced pluripotent stem cells (hiPSC) hold great promise for use in cell therapy applications and for improved in vitro models of human disease. So far, most hiPSC differentiation protocols to astroglia use undefined, animal-containing culture matrices. Laminins, which play an essential role in the regulation of cell behavior, offer a source of defined, animal-free culture matrix. Methods In order to understand how laminins affect astroglia differentiation, recombinant human laminin-521 (LN521), was compared to a murine Engelbreth-Holm-Swarm sarcoma derived laminin (L2020). Astroglia expression of protein and mRNA together with glutamate uptake and protein secretion function, were evaluated. Finally, these astroglia were evaluated in a coculture model of the blood–brain barrier (BBB). Results Astroglia of good quality were generated from hiPSC on both LN521 and L2020. However, astroglia differentiated on human LN521 showed higher expression of several astroglia specific mRNAs and proteins such as GFAP, S100B, Angiopoietin-1, and EAAT1, compared to astroglia differentiated on murine L2020. In addition, glutamate uptake and ability to induce expression of junction proteins in endothelial cells were affected by the culture matrix for differentiation. Conclusion Our results suggest that astroglia differentiated on LN521 display an improved phenotype and are suitable for coculture in a hiPSC-derived BBB model. This provides a starting point for a more defined and robust derivation of astroglia for use in BBB coculture models. Electronic supplementary material The online version of this article (10.1186/s12987-019-0147-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Louise Delsing
- Department of Neurochemistry, Institute of Neuroscience and Physiology, The Sahlgrenska Academy at the University of Gothenburg, Göteborg, Sweden. .,Systems Biology Research Center, School of Bioscience, University of Skövde, Högskolevägen, Box 408, 541 28, Skövde, Sweden. .,Discovery Biology, Discovery Sciences, R&D, AstraZeneca, Mölndal, Sweden.
| | | | - Henrik Zetterberg
- Department of Neurochemistry, Institute of Neuroscience and Physiology, The Sahlgrenska Academy at the University of Gothenburg, Göteborg, Sweden.,Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Mölndal, Sweden.,Department of Neurodegenerative Disease, UCL Institute of Neurology, London, UK.,UK Dementia Research Institute at UCL, London, UK
| | - Ryan Hicks
- Discovery Biology, Discovery Sciences, R&D, AstraZeneca, Mölndal, Sweden
| | - Jane Synnergren
- Systems Biology Research Center, School of Bioscience, University of Skövde, Högskolevägen, Box 408, 541 28, Skövde, Sweden
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99968
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Abstract
Sepsis is a dysregulated immune response to an infection that leads to organ dysfunction. Knowledge of the pathophysiology of organ failure in sepsis is crucial for optimizing the management and treatment of patients and for the development of potential new therapies. In clinical practice, six major organ systems - the cardiovascular (including the microcirculation), respiratory, renal, neurological, haematological and hepatic systems - can be assessed and monitored, whereas others, such as the gut, are less accessible. Over the past 2 decades, considerable amounts of new data have helped improve our understanding of sepsis pathophysiology, including the regulation of inflammatory pathways and the role played by immune suppression during sepsis. The effects of impaired cellular function, including mitochondrial dysfunction and altered cell death mechanisms, on the development of organ dysfunction are also being unravelled. Insights have been gained into interactions between key organs (such as the kidneys and the gut) and organ-organ crosstalk during sepsis. The important role of the microcirculation in sepsis is increasingly apparent, and new techniques have been developed that make it possible to visualize the microcirculation at the bedside, although these techniques are only research tools at present.
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Affiliation(s)
- Christophe Lelubre
- Laboratoire de Médecine Expérimentale (ULB 222 Unit), Université Libre de Bruxelles, CHU de Charleroi, A. Vésale Hospital, Montigny-Le-Tilleul, Belgium.,Department of Internal Medicine, CHU Charleroi - Hôpital Civil Marie Curie, Lodelinsart, Belgium
| | - Jean-Louis Vincent
- Department of Intensive Care, Erasme Hospital, Université libre de Bruxelles, Brussels, Belgium.
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99969
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Hussain AA, Lee Y, Marshall J. Understanding the complexity of the matrix metalloproteinase system and its relevance to age-related diseases: Age-related macular degeneration and Alzheimer's disease. Prog Retin Eye Res 2019; 74:100775. [PMID: 31473329 DOI: 10.1016/j.preteyeres.2019.100775] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 08/25/2019] [Accepted: 08/27/2019] [Indexed: 01/26/2023]
Abstract
Extracellular matrices (ECMs) are maintained by tightly coupled processes of continuous synthesis and degradation. The degradative arm is mediated by a family of proteolytic enzymes called the matrix metalloproteinases (MMPs). These enzymes are released as latent proteins (pro-MMPs) and on activation are capable of degrading most components of an ECM. Activity of these enzymes is checked by the presence of tissue inhibitors of MMPs (TIMPs) and current opinion holds that the ratio of TIMPs/MMPs determines the relative rate of degradation. Thus, elevated ratios are thought to compromise degradation leading to the accumulation of abnormal ECM material, whilst diminished ratios are thought to lead to excessive ECM degradation (facilitating angiogenesis and the spread of cancer cells). Our recent work has shown this system to be far more complex. MMP species tend to undergo covalent modification leading to homo- and hetero-dimerization and aggregation resulting in the formation of very large macromolecular weight MMP complexes (LMMCs). In addition, the various MMP species also show a bound-free compartmentalisation. The net result of these changes is to reduce the availability of the latent forms of MMPs for the activation process. An assessment of the degradation potential of the MMP system in any tissue must therefore take into account the degree of sequestration of the latent MMP species, a protocol that has not previously been addressed. Taking into consideration the complexities already described, we will present an analysis of the MMP system in two common neurodegenerative disorders, namely age-related macular degeneration (AMD) and Alzheimer's disease (AD).
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Affiliation(s)
- Ali A Hussain
- Department of Genetics, UCL Institute of Ophthalmology, London, UK.
| | - Yunhee Lee
- Alt-Regen Co., Ltd, Heungdeok IT Valley, Yongin, Republic of Korea.
| | - John Marshall
- Department of Genetics, UCL Institute of Ophthalmology, London, UK.
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99970
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Grundmann SM, Schutkowski A, Schreier B, Rabe S, König B, Gekle M, Stangl GI. Vitamin D Receptor Deficiency Does Not Affect Blood Pressure and Heart Function. Front Physiol 2019; 10:1118. [PMID: 31555149 PMCID: PMC6727788 DOI: 10.3389/fphys.2019.01118] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Accepted: 08/13/2019] [Indexed: 01/07/2023] Open
Abstract
Vitamin D is thought to play a role in blood pressure regulation, which in turn can influence cardiovascular risk. Several meta-analyses of cohort studies found low serum levels of 25-hydroxyvitamin D to be associated with increased blood pressure or increased cardiovascular morbidity and mortality in the general population. Active vitamin D mediates its function via the vitamin D receptor (Vdr), which is a ligand-activated transcription factor. A suitable model to examine the causal role of vitamin D in blood pressure regulation and heart function is the Vdr knockout (Vdr–/–) mouse. To elucidate the role of vitamin D on blood pressure, heart function, and cardiac myocyte size, we conducted a long-term study using Vdr–/– mice and well-defined diets. Group 1 comprised Vdr–/– mice that received a high-calcium, high-phosphorus rescue diet to prevent hypocalcemia and a rickets phenotype. Groups 2 and 3 included Vdr+/+ mice that were fed either the rescue diet or a control diet containing normal amounts of these minerals. As Vdr is a nuclear factor that regulates transcription, we analyzed the renal mRNA expression and serum concentration of renin and found that the Vdr–/– group had an almost 50% higher renin mRNA expression in the kidney compared to both groups of Vdr+/+ mice. Additionally, serum concentration of renin in Vdr–/– mice was significantly higher than that of Vdr+/+ mice that received the rescue or control diet (+ 17%,+ 32%; P < 0.05). In contrast, renin activity was lower in Vdr–/– mice than in both groups of Vdr+/+ mice (P < 0.05). However, blood pressure, heart rate, cardiac myocyte sizes, and the expression of renal renin receptor, hepatic angiotensinogen and angiotensin II receptor, type 1, in kidney, liver and heart, did not differ between the three groups of mice. Additionally, data from transthoracic echocardiography did not indicate the role of Vdr on heart function, as the left ventricular ejection fraction, fractional shortening, and velocity of blood flow were comparable between the three groups. To conclude, the roles of Vdr and therefore most probably of vitamin D, in blood pressure regulation and heart function, were not confirmed by our findings.
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Affiliation(s)
- Sarah M Grundmann
- Institute of Agricultural and Nutritional Sciences, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany.,Competence Cluster for Nutrition and Cardiovascular Health (nutriCARD), Halle-Jena-Leipzig, Leipzig, Germany
| | - Alexandra Schutkowski
- Institute of Agricultural and Nutritional Sciences, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Barbara Schreier
- Competence Cluster for Nutrition and Cardiovascular Health (nutriCARD), Halle-Jena-Leipzig, Leipzig, Germany.,Julius Bernstein Institute of Physiology, Faculty of Medicine, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Sindy Rabe
- Julius Bernstein Institute of Physiology, Faculty of Medicine, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Bettina König
- Institute of Agricultural and Nutritional Sciences, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany.,Competence Cluster for Nutrition and Cardiovascular Health (nutriCARD), Halle-Jena-Leipzig, Leipzig, Germany
| | - Michael Gekle
- Competence Cluster for Nutrition and Cardiovascular Health (nutriCARD), Halle-Jena-Leipzig, Leipzig, Germany.,Julius Bernstein Institute of Physiology, Faculty of Medicine, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Gabriele I Stangl
- Institute of Agricultural and Nutritional Sciences, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany.,Competence Cluster for Nutrition and Cardiovascular Health (nutriCARD), Halle-Jena-Leipzig, Leipzig, Germany
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99971
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Mishra N, Mohata M, Narang R, Lakshmy R, Hazarika A, Pandey RM, Das N, Luthra K. Altered Expression of Complement Regulatory Proteins CD35, CD46, CD55, and CD59 on Leukocyte Subsets in Individuals Suffering From Coronary Artery Disease. Front Immunol 2019; 10:2072. [PMID: 31555286 PMCID: PMC6727527 DOI: 10.3389/fimmu.2019.02072] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Accepted: 08/16/2019] [Indexed: 12/16/2022] Open
Abstract
Studies conducted in animal models have suggested that membrane complement regulatory proteins play an important role in the pathophysiology of coronary artery disease (CAD). In this study, a total of 100 individuals, with stable CAD and 100 healthy controls, both groups predominantly male, were recruited. We evaluated the plasma levels of complement regulatory proteins (Cregs) CD35, CD46, CD55, and CD59 and their surface expression on granulocytes, lymphocytes, and monocytes by flow cytometry. The mRNA expression of these Cregs in total leukocytes was determined by quantitative PCR. The soluble forms of Cregs, C3c, Mannose binding protein-associated serine protease 2 (MASP-2), Platelet activating factor-acetyl hydrolase (PAF-AH), and inflammatory cytokines were quantified by ELISA. High plasma levels of C3c, indicative of complement activation, in addition to significantly low levels of Cregs, were observed in CAD patients. A significantly lower expression of CD46 and CD55 on the surface of lymphocytes, monocytes, and granulocytes and higher surface expression of CD35 and CD59 on granulocytes (p < 0.0001) was seen in CAD patients as compared to healthy donors. The high expression of CD59 on granulocytes positively correlated with the severity of disease and may serve as a potential marker of disease progression in CAD.
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Affiliation(s)
- Nitesh Mishra
- Department of Biochemistry, All India Institute of Medical Sciences, New Delhi, India
| | - Madhav Mohata
- Department of Biochemistry, All India Institute of Medical Sciences, New Delhi, India
| | - Rajeev Narang
- Department of Cardiology, All India Institute of Medical Sciences, New Delhi, India
| | - R Lakshmy
- Department of Cardiac Biochemistry, All India Institute of Medical Sciences, New Delhi, India
| | - Anjali Hazarika
- Blood Bank, Cardio-Neuro Centre, All India Institute of Medical Sciences, New Delhi, India
| | - R M Pandey
- Department of Biostatistics, All India Institute of Medical Sciences, New Delhi, India
| | - Nibhriti Das
- Department of Biochemistry, All India Institute of Medical Sciences, New Delhi, India
| | - Kalpana Luthra
- Department of Biochemistry, All India Institute of Medical Sciences, New Delhi, India
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99972
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Collery RF, Link BA. Precise Short Sequence Insertion in Zebrafish Using a CRISPR/Cas9 Approach to Generate a Constitutively Soluble Lrp2 Protein. Front Cell Dev Biol 2019; 7:167. [PMID: 31457013 PMCID: PMC6700241 DOI: 10.3389/fcell.2019.00167] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Accepted: 07/31/2019] [Indexed: 11/13/2022] Open
Abstract
LRP2 is a large transmembrane receptor expressed on absorptive epithelia where it binds many extracellular ligands to control several signaling pathways. Mutations in LRP2 are associated with buphthalmic eye enlargement, myopia and other non-ocular symptoms. Though studies have clearly shown that absence of LRP2 causes these phenotypes, and that overexpression of individual LRP2 domains can exacerbate eye enlargement caused by the absence of Lrp2, the relationship between soluble LRP2 fragments and full-length membrane-bound LRP2 is not completely understood. Here we use a CRISPR/Cas9 approach to insert a stop codon cassette into zebrafish lrp2 to prematurely truncate the protein before its transmembrane domain while leaving the entire extracellular domain intact. The resulting mutant line will be a useful tool for examining Lrp2 function in the eye, and testing hypotheses regarding its extracellular processing.
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Affiliation(s)
- Ross F Collery
- Department of Cell Biology, Neurobiology and Anatomy, Medical College of Wisconsin, Milwaukee, WI, United States.,Department of Ophthalmology and Visual Sciences, Medical College of Wisconsin Eye Institute, Milwaukee, WI, United States
| | - Brian A Link
- Department of Cell Biology, Neurobiology and Anatomy, Medical College of Wisconsin, Milwaukee, WI, United States
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99973
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Huppertz A, Grond-Ginsbach C, Dumschat C, Foerster KI, Burhenne J, Weiss J, Czock D, Purrucker JC, Rizos T, Haefeli WE. Unexpected excessive apixaban exposure: case report of a patient with polymorphisms of multiple apixaban elimination pathways. BMC Pharmacol Toxicol 2019; 20:53. [PMID: 31464657 PMCID: PMC6716843 DOI: 10.1186/s40360-019-0331-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Accepted: 08/23/2019] [Indexed: 12/22/2022] Open
Abstract
Background Apixaban effectively lowers the risk of ischemic stroke and systemic embolism in patients with non-valvular atrial fibrillation. Systemic exposure to a given apixaban dose depends on multiple clearance pathways. Though routine quantification of direct oral anticoagulants (DOACs) in neurological emergency situations has not been widely established, suspected associations of DOAC peak concentrations with bleeding events and DOAC trough concentrations with efficacy and safety suggest that such information might support clinical decision making. Case presentation We describe the case of a 75 year-old woman with atrial fibrillation maintained on apixaban who was admitted due to suspected acute stroke. Clinical work-up did not confirm ischemic or hemorrhagic stroke but routine quantification of apixaban revealed an excessively high apixaban plasma concentration (~ 3 h after the last drug intake: 1100 ng/ml (expected range: 91–321 ng/ml); ~ 12 h after drug intake: 900 ng/ml (expected range: 41–230 ng/ml)) and a substantially prolonged elimination half-life (~ 31 h). The corresponding apixaban concentration-to-dose ratio was 9900 (ng/ml)/(mg/kg/d) and 8100 (ng/ml)/(mg/kg/d), respectively (expected range: 249–463 (ng/ml)/(mg/kg/d)). Renal function was only moderately impaired (creatinine 1.36 mg/dl (0.5–1.1 mg/dl), creatinine clearance 40 ml/min). Genotype analyses revealed that the patient was a CYP3A5*3/*3 non-expressor, a heterozygous carrier of the ABCG2 c.421C/A alleles, and a homozygous carrier of ABCB1 c.2677 T/T and ABCB1 c.3435 T/T. In the absence of known drug interactions explaining apixaban clearance impairment, excessive apixaban concentrations were most probably caused by moderate renal impairment combined with multiple functional polymorphisms of apixaban clearance pathways. Conclusions This case suggests that concurrent genetic polymorphisms can impair multiple apixaban elimination pathways and thus substantially increase its exposure.
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Affiliation(s)
- Andrea Huppertz
- Department of Clinical Pharmacology and Pharmacoepidemiology, Heidelberg University Hospital, Im Neuenheimer Feld 410, 69120, Heidelberg, Germany
| | - Caspar Grond-Ginsbach
- Department of Neurology, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany.,Department of Vascular and Endovascular Surgery, University Hospital Heidelberg, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany
| | - Chris Dumschat
- Department of Neurology, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany
| | - Kathrin I Foerster
- Department of Clinical Pharmacology and Pharmacoepidemiology, Heidelberg University Hospital, Im Neuenheimer Feld 410, 69120, Heidelberg, Germany
| | - Jürgen Burhenne
- Department of Clinical Pharmacology and Pharmacoepidemiology, Heidelberg University Hospital, Im Neuenheimer Feld 410, 69120, Heidelberg, Germany
| | - Johanna Weiss
- Department of Clinical Pharmacology and Pharmacoepidemiology, Heidelberg University Hospital, Im Neuenheimer Feld 410, 69120, Heidelberg, Germany
| | - David Czock
- Department of Clinical Pharmacology and Pharmacoepidemiology, Heidelberg University Hospital, Im Neuenheimer Feld 410, 69120, Heidelberg, Germany
| | - Jan C Purrucker
- Department of Neurology, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany
| | - Timolaos Rizos
- Department of Neurology, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany.
| | - Walter E Haefeli
- Department of Clinical Pharmacology and Pharmacoepidemiology, Heidelberg University Hospital, Im Neuenheimer Feld 410, 69120, Heidelberg, Germany
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99974
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Kim JE, Yu MY, Kim YC, Min SI, Ha J, Lee JP, Kim DK, Oh KH, Joo KW, Ahn C, Kim YS, Lee H. Ratio of triglyceride to high-density lipoprotein cholesterol and risk of major cardiovascular events in kidney transplant recipients. Clin Exp Nephrol 2019; 23:1407-1417. [PMID: 31468232 PMCID: PMC6848440 DOI: 10.1007/s10157-019-01776-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Accepted: 08/12/2019] [Indexed: 01/23/2023]
Abstract
BACKGROUND Dyslipidemia is common in kidney transplant (KT) recipients. We analyzed the ratio of triglyceride to high-density lipoprotein cholesterol (TG/HDL-C) in KT recipients to identify risk factors for major cardiovascular events (MACE). METHODS We retrospectively included KT recipients with a lipid profile performed 1 year after transplantation. We classified patients according to the TG/HDL-C divided into quintiles. Subsequently, we analyzed the association between TG/HDL-C and MACE, defined as heart failure, coronary artery disease, and cerebrovascular disease confirmed by imaging studies. RESULTS A total of 1301 KT recipients were enrolled. The median follow-up duration was 7.4 years (interquartile range 4.4-11.1 years). During the follow-up period, 80 (6.2%) patients developed MACE, which included 38 of unstable anginas, 9 of MIs, 19 of heart failures, 18 of cerebral infarcts, and 4 of cerebral hemorrhages. The fourth and fifth quintiles of TG/HDL-C showed a significantly increased risk of MACE [fourth quintile: adjusted hazard ratio (aHR), 3.38; 95% confidence interval (CI) 1.44-7.95; p = 0.005, fifth quintile: aHR, 2.67; 95% CI 1.13-6.30; p = 0.02]) compared to the second quintile of TG/HDL-C. This association is particularly evident in subgroups of non-DM, HTN, no history of CVD, and statin users. CONCLUSIONS Higher TG/HDL-C levels may be associated with MACE risk in KT recipients.
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Affiliation(s)
- Ji Eun Kim
- Department of Internal Medicine, Seoul National University College of Medicine, 103 Daehakro, Jongno-gu, Seoul, 03080, South Korea
| | - Mi-Yeon Yu
- Department of Internal Medicine, Hanyang University Guri Hospital, Guri, South Korea
| | - Yong Chul Kim
- Department of Internal Medicine, Seoul National University College of Medicine, 103 Daehakro, Jongno-gu, Seoul, 03080, South Korea
| | - Sang-Il Min
- Department of Surgery, Seoul National University Transplantation Research Laboratory, Seoul National University Hospital, Seoul, South Korea
| | - Jongwon Ha
- Department of Surgery, Seoul National University Transplantation Research Laboratory, Seoul National University Hospital, Seoul, South Korea
| | - Jung Pyo Lee
- Department of Internal Medicine, Seoul National University Boramae Medical Center, Seoul, Korea
| | - Dong Ki Kim
- Department of Internal Medicine, Seoul National University College of Medicine, 103 Daehakro, Jongno-gu, Seoul, 03080, South Korea.,Kidney Research Institute, Seoul National University College of Medicine, Seoul, South Korea
| | - Kook-Hwan Oh
- Department of Internal Medicine, Seoul National University College of Medicine, 103 Daehakro, Jongno-gu, Seoul, 03080, South Korea
| | - Kwon-Wook Joo
- Department of Internal Medicine, Seoul National University College of Medicine, 103 Daehakro, Jongno-gu, Seoul, 03080, South Korea.,Kidney Research Institute, Seoul National University College of Medicine, Seoul, South Korea
| | - Curie Ahn
- Department of Internal Medicine, Seoul National University College of Medicine, 103 Daehakro, Jongno-gu, Seoul, 03080, South Korea.,Kidney Research Institute, Seoul National University College of Medicine, Seoul, South Korea
| | - Yon Su Kim
- Department of Internal Medicine, Seoul National University College of Medicine, 103 Daehakro, Jongno-gu, Seoul, 03080, South Korea.,Kidney Research Institute, Seoul National University College of Medicine, Seoul, South Korea
| | - Hajeong Lee
- Department of Internal Medicine, Seoul National University College of Medicine, 103 Daehakro, Jongno-gu, Seoul, 03080, South Korea. .,Kidney Research Institute, Seoul National University College of Medicine, Seoul, South Korea.
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99975
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Complement and Coagulation: Cross Talk Through Time. Transfus Med Rev 2019; 33:199-206. [PMID: 31672340 DOI: 10.1016/j.tmrv.2019.08.004] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Accepted: 08/24/2019] [Indexed: 12/29/2022]
Abstract
Two complex protein defense systems-complement and coagulation-are based on amplifying enzyme cascades triggered by specific local stimuli. Excess systemic activation of either system is pathologic and is normally prevented by a family of regulatory proteins. The 2 systems are ancient biological processes which share a common origin that predates vertebrate evolution. Recent research has uncovered multiple opportunities for cross talk between complement and coagulation including proteins traditionally viewed as coagulation factors that activate and regulate complement, and proteins traditionally seen as part of the complement system that participate in coagulation. Ten examples of cross talk between the 2 systems are described. The mutual engagement of both systems is increasingly recognized to occur in human diseases. Three conditions-paroxysmal nocturnal hemoglobinuria, atypical hemolytic uremic syndrome, and the antiphospholipid syndrome-provide examples of the importance of interactions between complement and coagulation in human biology. A better understanding of the mutual engagement of these 2 ancient defense systems is expected to result in improved diagnostics and new treatments for systemic diseases.
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99976
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A new, easily generated mouse model of diabetic kidney fibrosis. Sci Rep 2019; 9:12549. [PMID: 31467329 PMCID: PMC6715679 DOI: 10.1038/s41598-019-49012-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Accepted: 08/13/2019] [Indexed: 12/12/2022] Open
Abstract
Our understanding of diabetic kidney disease pathogenesis has been hampered by the lack of easily generated pre-clinical animal models that faithfully recapitulate critical features of human disease. While most standard animal models develop manifestations of early stage diabetic injury such as hyperfiltration and mesangial matrix expansion, only a select few develop key late stage features such as interstitial fibrosis and reduced glomerular filtration rate. An underlying theme in these late stage disease models has been the addition of renin-angiotensin system hyperactivation, an important contributor to human disease pathogenesis. Widespread use of these models has been limited, however, as they are either labour intensive to generate, or have been developed in the rat, preventing the use of the many powerful genetic tools developed for mice. Here we describe the Akita+/− Ren+/− mouse, a new, easily generated murine model of diabetic kidney disease that develops many features of late stage human injury, including not only hyperglycemia, hypertension, and albuminuria, but also reduced glomerular filtration rate, glomerulosclerosis, and interstitial fibrosis.
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99977
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Three miRNAs cooperate with host genes involved in human cardiovascular disease. Hum Genomics 2019; 13:40. [PMID: 31464655 PMCID: PMC6714460 DOI: 10.1186/s40246-019-0232-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2019] [Accepted: 08/13/2019] [Indexed: 12/03/2022] Open
Abstract
Background Understanding the roles of miRNAs in cardiovascular disease remains a challenge. Genomic linkage indicates a functional relationship between intronic miRNAs and their host genes. However, few studies have shown functional association between intronic miRNAs and their host coding genes that are genetically associated with cardiovascular disease. Methods In this study, we investigated functional relationship between three protein-coding genes genetically associated with cardiovascular disease, i.e., CDH13, SLC12A3, and CKAP5, and their intronic miRNAs using a data-driven approach. Results We found that the three protein-coding genes functionally interact with targets of their intronic miRNAs, i.e., miR-3182, miR-6863, and miR-5582, in a tissue-specific pattern. The intronic miRNAs preferentially impact important genes for the three host genes in the network, indicating their roles in maintaining the integrity of the interactome where the host genes are involved. Targets of the intronic miRNAs display functional similarity to the host genes. We furthermore present sets of target genes for future investigation on the possible miRNA-target interactions that potentially contribute to cardiovascular diseases. Conclusions Our work provides new insight into the regulatory network of the cardiovascular-associated pathways and opens the possibility for future experimental research. Electronic supplementary material The online version of this article (10.1186/s40246-019-0232-4) contains supplementary material, which is available to authorized users.
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99978
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Weinstock C, Schnaidt M. Human Leucocyte Antigen Sensitisation and Its Impact on Transfusion Practice. Transfus Med Hemother 2019; 46:356-369. [PMID: 31832061 DOI: 10.1159/000502158] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Accepted: 07/13/2019] [Indexed: 01/25/2023] Open
Abstract
Human leucocyte antigen (HLA) sensitisation, including the formation of antibodies against HLA, can cause serious effects in patients receiving blood. Under certain circumstances, donor HLA antibodies in the blood product can trigger the patient's granulocytes to release mediators that cause transfusion-associated lung injury (TRALI), a serious complication of transfusion. The HLA systems of both donor and patient are involved in transfusion-associated graft-versus-host disease, which is a rare disease with a high mortality. Patient HLA antibodies can destroy incompatible platelets and may cause refractoriness to platelet transfusion. Identification of a patient's HLA antibody specificities is necessary for issuing compatible platelets to overcome refractoriness. Many techniques for the detection and identification of HLA antibodies have been developed, including complement-dependent cytotoxicity assay, bead-based assays, the platelet adhesion immunofluorescence test, and the monoclonal antibody-specific immobilisation of platelet antigens assay. Different strategies for the selection of HLA-compatible platelets are applied. These strategies depend on the breadth of antibody reactivity and range from avoiding single HLA antigens in the platelet concentrates issued to apheresis of platelets from HLA-identical donors. The mechanisms of HLA sensitisation and the efforts made to provide compatible blood products to sensitised patients are reviewed in this article from the perspective of clinical transfusion medicine.
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Affiliation(s)
- Christof Weinstock
- Institute for Clinical Transfusion Medicine and Immunogenetics Ulm, German Red Cross Blood Service Baden-Württemberg-Hessen, Institute Ulm, Institute of Transfusion Medicine, Ulm University, Ulm, Germany
| | - Martina Schnaidt
- Centre for Clinical Transfusion Medicine, Medical Faculty of Tübingen, University of Tübingen, Tübingen, Germany
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99979
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Blanche P, Kattan MW, Gerds TA. The c-index is not proper for the evaluation of $t$-year predicted risks. Biostatistics 2019; 20:347-357. [PMID: 29462286 DOI: 10.1093/biostatistics/kxy006] [Citation(s) in RCA: 81] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Accepted: 01/17/2018] [Indexed: 12/16/2022] Open
Abstract
We show that the widely used concordance index for time to event outcome is not proper when interest is in predicting a $t$-year risk of an event, for example 10-year mortality. In the situation with a fixed prediction horizon, the concordance index can be higher for a misspecified model than for a correctly specified model. Impropriety happens because the concordance index assesses the order of the event times and not the order of the event status at the prediction horizon. The time-dependent area under the receiver operating characteristic curve does not have this problem and is proper in this context.
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Affiliation(s)
- Paul Blanche
- Section of Biostatistics, Department of Public Health, University of Copenhagen, Oester Farimagsgade 5, 1014 Copenhagen, Denmark
| | - Michael W Kattan
- Department of Quantitative Health Sciences, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH 44195, USA
| | - Thomas A Gerds
- Section of Biostatistics, Department of Public Health, University of Copenhagen, Oester Farimagsgade 5, 1014 Copenhagen, Denmark
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99980
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Abstract
PURPOSE OF REVIEW The host-microbiota relationship is integral in human health and can be rapidly disrupted in ways that may contribute to poor recovery from surgery or acute illness. We review key studies by organ system to understand the effect of perioperative and critical illness stress on the microbiota. Throughout the review, our focus is on potential interventions that may be mediated by the microbiome. RECENT FINDINGS Although any perioperative intervention can have a profound impact on the gut microbiota, it is less clear how such changes translate into altered health outcomes. Preoperative stress (anxiety, lack of sleep, fasting), intraoperative stress (surgery itself, volatile anesthetics, perioperative antibiotics, blood transfusions), and postoperative stress (sepsis, surgical site infections, acute respiratory distress syndrome, catecholamines, antibiotics, opioids, proton pump inhibitors) have all been associated with alterations of the commensal microflora. These factors (e.g. administration of antibiotics or opioids) can create a favorable environment for emergence of pathogen virulence and development of serious infections and multiorgan failure. Data to recommend therapies aimed at restoring a disrupted microbiota, such as probiotics/prebiotics and fecal microbiota transplants is currently scarce. SUMMARY The microbiome is likely to play an important role in the perioperative and ICU setting but existing data is largely descriptive. There is an expanding number of mechanistic studies that attempt to disentangle the complicated bi-directional relationship between the host and the resident microbiota. When these results are combined with ongoing clinical studies, we should be able to offer better therapies aimed at restoring the microbiota in the future.
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99981
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Metabolism and mitochondria in polycystic kidney disease research and therapy. Nat Rev Nephrol 2019; 14:678-687. [PMID: 30120380 DOI: 10.1038/s41581-018-0051-1] [Citation(s) in RCA: 121] [Impact Index Per Article: 24.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Autosomal dominant polycystic kidney disease (ADPKD) is one of the most common, potentially lethal, monogenic diseases and is caused predominantly by mutations in polycystic kidney disease 1 (PKD1) and PKD2, which encode polycystin 1 (PC1) and PC2, respectively. Over the decades-long course of the disease, patients develop large fluid-filled renal cysts that impair kidney function, leading to end-stage renal disease in ~50% of patients. Despite the identification of numerous dysregulated pathways in ADPKD, the molecular mechanisms underlying the renal dysfunction from mutations in PKD genes and the physiological functions of the polycystin proteins are still unclear. Alterations in cell metabolism have emerged in the past decade as a hallmark of ADPKD. ADPKD cells shift their mode of energy production from oxidative phosphorylation to alternative pathways, such as glycolysis. In addition, the polycystins seem to play regulatory roles in modulating mechanisms and machinery related to energy production and utilization, including AMPK, PPARα, PGC1α, calcium signalling at mitochondria-associated membranes, mTORC1, cAMP and CFTR-mediated ion transport as well as the expression of crucial components of the mitochondrial energy production apparatus. In this Review, we explore these metabolic changes and discuss in detail the relationship between energy metabolism and ADPKD pathogenesis and identify potential therapeutic targets.
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99982
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Autoactivation and calpain-1-mediated shedding of hepsin in human hepatoma cells. Biochem J 2019; 476:2355-2369. [DOI: 10.1042/bcj20190375] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 08/06/2019] [Accepted: 08/08/2019] [Indexed: 01/19/2023]
Abstract
AbstractHepsin is a transmembrane serine protease implicated in many biological processes, including hepatocyte growth, urinary protein secretion, auditory nerve development, and cancer metastasis. Zymogen activation is critical for hepsin function. To date, how hepsin is activated and regulated in cells remains an enigma. In this study, we conducted site-directed mutagenesis, cell expression, plasma membrane protein labeling, trypsin digestion, Western blotting, and flow cytometry experiments in human hepatoma HepG2 cells, where hepsin was originally discovered, and SMMC-7721 cells. Our results show that hepsin is activated by autocatalysis on the cell surface but not intracellularly. Moreover, we show that hepsin undergoes ectodomain shedding. In the conditioned medium from HepG2 and SMMC-7721 cells, we detected a soluble fragment comprising nearly the entire extracellular region of hepsin. By testing protease inhibitors, gene knockdown, and site-directed mutagenesis, we identified calpain-1 as a primary protease that acted extracellularly to cleave Tyr52 in the juxtamembrane space of hepsin. These results provide new insights into the biochemical and cellular mechanisms that regulate hepsin expression and activity.
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99983
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More KM, Blanchard C, Theou O, Cranston A, Vinson AJ, Dipchand C, Kiberd B, Tennankore KK. A Location-Based Objective Assessment of Physical Activity and Sedentary Behavior in Ambulatory Hemodialysis Patients. Can J Kidney Health Dis 2019; 6:2054358119872967. [PMID: 31497306 PMCID: PMC6716178 DOI: 10.1177/2054358119872967] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 06/25/2019] [Indexed: 12/04/2022] Open
Abstract
Background: Dialysis patients have reduced moderate to vigorous physical activity, and
light physical activity. This has been shown in self-reported surveys and
objective accelerometer studies. Less attention has been directed toward
sedentary behavior, which is characterized by low energy expenditure (≤1.5
metabolic equivalents). Furthermore, locations where physical activity and
sedentary behavior occur are largely unknown for dialysis patients. Objectives: The objectives of this study were (1) to determine the minutes per day of
moderate to vigorous physical activity, light physical activity, and
sedentary behavior for hemodialysis patients; (2) to describe differences in
moderate to vigorous physical activity, light physical activity, and
sedentary behavior comparing dialysis versus nondialysis days; and (3) to
describe the locations where moderate to vigorous physical activity, light
physical activity, and sedentary behavior occur using global positioning
system (GPS) data. Design: Cross-sectional study. Setting: The study was performed at a tertiary care hospital in Nova Scotia,
Canada. Patients: A total of 50 adult in-center hemodialysis patients consented to the
study. Measurements: Physical activity and sedentary behavior were measured with an Actigraph-GT3X
accelerometer. Location was determined using a Qstarz BT-Q1000X GPS
receiver. Methods: Minutes of daily activity were described as was percentage of wear time for
each activity level across different locations during waking hours. Physical
activity intensity, quantity, and location were also analyzed according to
dialysis vs nondialysis days. Results: Forty-three patients met requirements for accelerometer analysis, of whom 42
had GPS data. Median wear time was 836.5 min/day (interquartile range [IQR]:
788.3-918.3). Median minutes of daily wear time spent in sedentary behavior,
light physical activity, and moderate to vigorous physical activity was 636
minutes (IQR: 594.1-730.1), 178 minutes (IQR: 144-222.1), and 1.6 minutes
(IQR: 0.6-7.7), respectively. Proportion of daily wear time spent in
sedentary behavior, light physical activity, and moderate to vigorous
physical activity was 78.4% (IQR: 70.7-84.0), 21.5% (IQR: 16.0-26.9), and
0.2% (IQR: 0.1-1.1), respectively. Home was the dominant location for total
linked accelerometer-GPS time (59.4%, IQR: 46.9-69.5) as well as for each
prespecified level of activity. Significantly more sedentary behavior and
less light physical activity occurred on dialysis days compared with
nondialysis days (P ≤ .01, respectively). Moderate to
vigorous physical activity did not differ significantly between dialysis and
nondialysis days. Limitations: Small sample size from a single academic center may limit generalizability.
Difficult to engage population as less than half of eligible dialysis
patients provided consent. Physical activity may have been underestimated as
devices were not worn for all waking hours or aquatic activities, and
hip-based accelerometers may not capture stationary exercise. Conclusions: Ambulatory, in-center hemodialysis patients exhibit substantial sedentary
behavior and minimal physical activity across a limited range of locations.
Given the sedentary tendencies of this population, focus should be directed
on increasing physical activity at any location frequented. Home-based
exercise programs may serve as a potential adjunct to established
intradialytic-based therapies given the amount of time spent in the home
environment.
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Affiliation(s)
- Keigan M More
- Division of Nephrology, Department of Medicine, Dalhousie University, Halifax, NS, Canada.,Nova Scotia Health Authority, Halifax, NS, Canada
| | - Chris Blanchard
- Department of Medicine, Dalhousie University, Halifax, NS, Canada.,School of Health and Human Performance, Dalhousie University, Halifax, NS, Canada.,School of Physiotherapy, Dalhousie University, Halifax, NS, Canada
| | - Olga Theou
- Department of Medicine, Dalhousie University, Halifax, NS, Canada
| | | | - Amanda J Vinson
- Division of Nephrology, Department of Medicine, Dalhousie University, Halifax, NS, Canada.,Nova Scotia Health Authority, Halifax, NS, Canada
| | - Christine Dipchand
- Division of Nephrology, Department of Medicine, Dalhousie University, Halifax, NS, Canada.,Nova Scotia Health Authority, Halifax, NS, Canada
| | - Bryce Kiberd
- Division of Nephrology, Department of Medicine, Dalhousie University, Halifax, NS, Canada.,Nova Scotia Health Authority, Halifax, NS, Canada
| | - Karthik K Tennankore
- Division of Nephrology, Department of Medicine, Dalhousie University, Halifax, NS, Canada.,Nova Scotia Health Authority, Halifax, NS, Canada
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99984
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Ohya K, Imamura M, Osawa M, Teraoka Y, Morio K, Fujino H, Ono A, Nakahara T, Murakami E, Yamauchi M, Kawaoka T, Hiramatsu A, Tsuge M, Aikata H, Hayes CN, Chayama K. Successful retreatment with 12 weeks of glecaprevir and pibrentasvir for a genotype 2a HCV-infected hemodialysis patient who failed to respond to 8 weeks of prior glecaprevir and pibrentasvir therapy. Clin J Gastroenterol 2019; 13:267-270. [PMID: 31463795 DOI: 10.1007/s12328-019-01039-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Accepted: 08/20/2019] [Indexed: 12/31/2022]
Abstract
Although NS3/4 protease inhibitor glecaprevir (GLE) plus NS5A inhibitor pibrentasvir (PIB) therapy has a high efficacy for chronic hepatitis C virus (HCV)-infected patients with hemodialysis, some patients fail to respond to the therapy. Here, we report a hemodialysis genotype 2 HCV-infected patient who achieved sustained virological response (SVR) by 12 weeks of GLE/PIB therapy after failing to respond to 8 weeks of GLE/PIB therapy. A 44-year-old man with chronic genotype 2a HCV-infection without any evidence of cirrhosis and who was undergoing hemodialysis received GLE/PIB therapy. He completed 8 weeks of therapy, but his serum HCV relapsed after the end of therapy. No resistance-associated substitutions were detected in the NS3 region, but NS5A-C92C/S was detected by direct sequence analysis prior to the start of therapy and subsequently shifted to NS5A-C92S at the time of HCV relapse. Four months after initial GLE/PIB therapy, he started a 12-week course of GLE/PIB retreatment. Serum HCV RNA level became and remained undetectable during the therapy and never relapsed after the end of the treatment. Finally, he succeeded in achieving sustained virological response following 12 weeks of GLE/PIB retreatment.
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Affiliation(s)
- Kazuki Ohya
- Department of Gastroenterology and Metabolism, Graduate School of Biomedical and Health Science, Hiroshima University, 1-2-3 Kasumi, Minamiku, Hiroshima, 734-8551, Japan
| | - Michio Imamura
- Department of Gastroenterology and Metabolism, Graduate School of Biomedical and Health Science, Hiroshima University, 1-2-3 Kasumi, Minamiku, Hiroshima, 734-8551, Japan.
| | - Mitsutaka Osawa
- Department of Gastroenterology and Metabolism, Graduate School of Biomedical and Health Science, Hiroshima University, 1-2-3 Kasumi, Minamiku, Hiroshima, 734-8551, Japan
| | - Yuji Teraoka
- Department of Gastroenterology and Metabolism, Graduate School of Biomedical and Health Science, Hiroshima University, 1-2-3 Kasumi, Minamiku, Hiroshima, 734-8551, Japan
| | - Kei Morio
- Department of Gastroenterology and Metabolism, Graduate School of Biomedical and Health Science, Hiroshima University, 1-2-3 Kasumi, Minamiku, Hiroshima, 734-8551, Japan
| | - Hatsue Fujino
- Department of Gastroenterology and Metabolism, Graduate School of Biomedical and Health Science, Hiroshima University, 1-2-3 Kasumi, Minamiku, Hiroshima, 734-8551, Japan
| | - Atsushi Ono
- Department of Gastroenterology and Metabolism, Graduate School of Biomedical and Health Science, Hiroshima University, 1-2-3 Kasumi, Minamiku, Hiroshima, 734-8551, Japan
| | - Takashi Nakahara
- Department of Gastroenterology and Metabolism, Graduate School of Biomedical and Health Science, Hiroshima University, 1-2-3 Kasumi, Minamiku, Hiroshima, 734-8551, Japan
| | - Eisuke Murakami
- Department of Gastroenterology and Metabolism, Graduate School of Biomedical and Health Science, Hiroshima University, 1-2-3 Kasumi, Minamiku, Hiroshima, 734-8551, Japan
| | - Masami Yamauchi
- Department of Gastroenterology and Metabolism, Graduate School of Biomedical and Health Science, Hiroshima University, 1-2-3 Kasumi, Minamiku, Hiroshima, 734-8551, Japan
| | - Tomokazu Kawaoka
- Department of Gastroenterology and Metabolism, Graduate School of Biomedical and Health Science, Hiroshima University, 1-2-3 Kasumi, Minamiku, Hiroshima, 734-8551, Japan
| | - Akira Hiramatsu
- Department of Gastroenterology and Metabolism, Graduate School of Biomedical and Health Science, Hiroshima University, 1-2-3 Kasumi, Minamiku, Hiroshima, 734-8551, Japan
| | - Masataka Tsuge
- Department of Gastroenterology and Metabolism, Graduate School of Biomedical and Health Science, Hiroshima University, 1-2-3 Kasumi, Minamiku, Hiroshima, 734-8551, Japan
| | - Hiroshi Aikata
- Department of Gastroenterology and Metabolism, Graduate School of Biomedical and Health Science, Hiroshima University, 1-2-3 Kasumi, Minamiku, Hiroshima, 734-8551, Japan
| | - Clair Nelson Hayes
- Department of Gastroenterology and Metabolism, Graduate School of Biomedical and Health Science, Hiroshima University, 1-2-3 Kasumi, Minamiku, Hiroshima, 734-8551, Japan
| | - Kazuaki Chayama
- Department of Gastroenterology and Metabolism, Graduate School of Biomedical and Health Science, Hiroshima University, 1-2-3 Kasumi, Minamiku, Hiroshima, 734-8551, Japan
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99985
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Zhou D, Fu H, Liu S, Zhang L, Xiao L, Bastacky SI, Liu Y. Early activation of fibroblasts is required for kidney repair and regeneration after injury. FASEB J 2019; 33:12576-12587. [PMID: 31461626 DOI: 10.1096/fj.201900651rr] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Acute kidney injury (AKI) is a devastating condition with high morbidity and mortality. AKI is characterized by tubular injury, inflammation, and vascular impairment. However, the role of interstitial fibroblasts in the pathogenesis of AKI is largely unknown. Here, we show that fibroblasts were activated, as defined by vimentin expression, at 1 h after AKI triggered by ischemia-reperfusion injury (IRI). They rapidly entered the cell cycle with Ki-67-positive staining, which started at 1 h and peaked at 12 h after IRI, whereas tubular cell proliferation peaked at 3 d. The trigger for such an early activation of fibroblasts was identified as sonic hedgehog (Shh), which was rapidly induced in renal tubules and could target interstitial fibroblasts. Tubule-specific knockout of Shh in mice inhibited fibroblast activation and aggravated kidney injury and functional decline after IRI. Likewise, pharmacologic inhibition of Shh signaling with cyclopamine also hindered fibroblast activation and exacerbated kidney damage. These studies uncover that tubule-derived Shh triggers the early activation of fibroblasts, which is required for kidney repair and regeneration. Our findings for the first time illustrate a previously unrecognized importance of interstitial fibroblasts in conferring renal protection in AKI.-Zhou, D., Fu, H., Liu, S., Zhang, L., Xiao, L., Bastacky, S. I., Liu, Y. Early activation of fibroblasts is required for kidney repair and regeneration after injury.
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Affiliation(s)
- Dong Zhou
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Haiyan Fu
- State Key Laboratory of Organ Failure Research, National Clinical Research Center of Kidney Disease, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Shijia Liu
- Department of Clinical Pharmacology, the Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Lu Zhang
- Department of Nephrology, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Liangxiang Xiao
- State Key Laboratory of Organ Failure Research, National Clinical Research Center of Kidney Disease, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Sheldon I Bastacky
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Youhua Liu
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA.,State Key Laboratory of Organ Failure Research, National Clinical Research Center of Kidney Disease, Nanfang Hospital, Southern Medical University, Guangzhou, China
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99986
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Smuder AJ. Exercise stimulates beneficial adaptations to diminish doxorubicin-induced cellular toxicity. Am J Physiol Regul Integr Comp Physiol 2019; 317:R662-R672. [PMID: 31461307 DOI: 10.1152/ajpregu.00161.2019] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Doxorubicin (DOX) is a highly effective antitumor agent used for the treatment of a wide range of cancers. Unfortunately, DOX treatment results in cytotoxic side effects due to its accumulation within off-target tissues. DOX-induced cellular toxicity occurs as a result of increased oxidative damage, resulting in apoptosis and cell death. While there is no standard-of-care practice to prevent DOX-induced toxicity to healthy organs, exercise has been shown to prevent cellular dysfunction when combined with DOX chemotherapy. Endurance exercise stimulates numerous biochemical adaptations that promote a healthy phenotype in several vulnerable tissues without affecting the antineoplastic properties of DOX. Therefore, for the development of an effective strategy to combat the pathological effects of DOX, it is important to determine the appropriate exercise regimen to prescribe to cancer patients receiving DOX therapy and to understand the mechanisms responsible for exercise-induced protection against DOX toxicity to noncancer cells. This review summarizes the cytotoxic effects of DOX on the heart, skeletal muscle, liver, and kidneys and discusses the current understanding of the clinical benefits of regular physical activity and the potential mechanisms mediating the positive effects of exercise on each organ system.
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Affiliation(s)
- Ashley J Smuder
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, Florida
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99987
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Stack AG, Johnson ME, Blak B, Klein A, Carpenter L, Morlock R, Maguire AR, Parsons VL. Gout and the risk of advanced chronic kidney disease in the UK health system: a national cohort study. BMJ Open 2019; 9:e031550. [PMID: 31462487 PMCID: PMC6720233 DOI: 10.1136/bmjopen-2019-031550] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
OBJECTIVE Evaluate the association between gout and risk of advanced chronic kidney disease (CKD). DESIGN Retrospective matched cohort study. SETTING UK Clinical Practice Research Datalink. PARTICIPANTS The analysis included data for 68 897 patients with gout and 554 964 matched patients without gout. Patients were aged ≥18 years, registered at UK practices, had ≥12 months of clinical data and had data linked with Hospital Episode Statistics. Patients were excluded for history of advanced CKD, juvenile gout, cancer, HIV, tumour lysis syndrome, Lesch-Nyhan syndrome or familial Mediterranean fever. PRIMARY AND SECONDARY OUTCOME MEASURES Advanced CKD was defined as first occurrence of: (1) dialysis, kidney transplant, diagnosis of end-stage kidney disease (ESKD) or stage 5 CKD (diagnostic codes in Read system or International Classification of Diseases, Tenth Revision); (2) estimated glomerular filtration rate (eGFR) <10 mL/min/1.73 m²; (3) doubling of serum creatinine from baseline and (4) death associated with CKD. RESULTS Advanced CKD incidence was higher for patients with gout (8.54 per 1000 patient-years; 95% CI 8.26 to 8.83) versus without gout (4.08; 95% CI 4.00 to 4.16). Gout was associated with higher advanced CKD risk in both unadjusted analysis (HR, 2.00; 95% CI 1.92 to 2.07) and after adjustment (HR, 1.29; 95% CI 1.23 to 1.35). Association was strongest for ESKD (HR, 2.13; 95% CI 1.73 to 2.61) and was present for eGFR <10 mL/min/1.73 m² (HR, 1.45; 95% CI 1.30 to 1.61) and serum creatinine doubling (HR, 1.13; 95% CI 1.08 to 1.19) but not CKD-associated death (HR, 1.14; 95% CI 0.99 to 1.31). Association of gout with advanced CKD was replicated in propensity-score matched analysis (HR, 1.23; 95% CI 1.17 to 1.29) and analysis limited to patients with incident gout (HR, 1.28; 95% CI 1.22 to 1.35). CONCLUSIONS Gout is associated with elevated risk of CKD progression. Future studies should investigate whether controlling gout is protective and reduces CKD risk.
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Affiliation(s)
- Austin G Stack
- Graduate Entry Medical School & Health Research Institute, University of Limerick, Limerick, Ireland
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99988
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Zhang J, Pan M, Zhang J, You X, Li D, Lin F, Lu G. Serum uric acid is an independent predictor of renal outcomes in patients with idiopathic membranous nephropathy. Int Urol Nephrol 2019; 51:1797-1804. [DOI: 10.1007/s11255-019-02254-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 08/05/2019] [Indexed: 11/30/2022]
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99989
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Shi Y, Wang Y, Li Q, Liu K, Hou J, Shao C, Wang Y. Immunoregulatory mechanisms of mesenchymal stem and stromal cells in inflammatory diseases. Nat Rev Nephrol 2019; 14:493-507. [PMID: 29895977 DOI: 10.1038/s41581-018-0023-5] [Citation(s) in RCA: 700] [Impact Index Per Article: 140.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Mesenchymal stem cells (MSCs; also referred to as mesenchymal stromal cells) have attracted much attention for their ability to regulate inflammatory processes. Their therapeutic potential is currently being investigated in various degenerative and inflammatory disorders such as Crohn's disease, graft-versus-host disease, diabetic nephropathy and organ fibrosis. The mechanisms by which MSCs exert their therapeutic effects are multifaceted, but in general, these cells are thought to enable damaged tissues to form a balanced inflammatory and regenerative microenvironment in the presence of vigorous inflammation. Studies over the past few years have demonstrated that when exposed to an inflammatory environment, MSCs can orchestrate local and systemic innate and adaptive immune responses through the release of various mediators, including immunosuppressive molecules, growth factors, exosomes, chemokines, complement components and various metabolites. Interestingly, even nonviable MSCs can exert beneficial effects, with apoptotic MSCs showing immunosuppressive functions in vivo. Because the immunomodulatory capabilities of MSCs are not constitutive but rather are licensed by inflammatory cytokines, the net outcomes of MSC activation might vary depending on the levels and the types of inflammation within the residing tissues. Here, we review current understanding of the immunomodulatory mechanisms of MSCs and the issues related to their therapeutic applications.
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Affiliation(s)
- Yufang Shi
- The First Affiliated Hospital of Soochow University, State Key Laboratory of Radiation Medicine and Protection, Institutes for Translational Medicine, Soochow University, Suzhou, China. .,CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, Shanghai Institutes for Biological Sciences/Shanghai Jiao Tong University School of Medicine, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China.
| | - Yu Wang
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, Shanghai Institutes for Biological Sciences/Shanghai Jiao Tong University School of Medicine, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Qing Li
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, Shanghai Institutes for Biological Sciences/Shanghai Jiao Tong University School of Medicine, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Keli Liu
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, Shanghai Institutes for Biological Sciences/Shanghai Jiao Tong University School of Medicine, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Jianquan Hou
- The First Affiliated Hospital of Soochow University, State Key Laboratory of Radiation Medicine and Protection, Institutes for Translational Medicine, Soochow University, Suzhou, China
| | - Changshun Shao
- The First Affiliated Hospital of Soochow University, State Key Laboratory of Radiation Medicine and Protection, Institutes for Translational Medicine, Soochow University, Suzhou, China
| | - Ying Wang
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, Shanghai Institutes for Biological Sciences/Shanghai Jiao Tong University School of Medicine, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China.
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99990
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MacKay EJ, Werner RM, Groeneveld PW, Desai ND, Reese PP, Gutsche JT, Augoustides JG, Neuman MD. Transesophageal Echocardiography, Acute Kidney Injury, and Length of Hospitalization Among Adults Undergoing Coronary Artery Bypass Graft Surgery. J Cardiothorac Vasc Anesth 2019; 34:687-695. [PMID: 31558399 DOI: 10.1053/j.jvca.2019.08.042] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Revised: 08/18/2019] [Accepted: 08/21/2019] [Indexed: 12/16/2022]
Abstract
OBJECTIVE To test the association between transesophageal echocardiography (TEE) and incidence of acute kidney injury and length of hospitalization among United States adults undergoing isolated coronary artery bypass graft (CABG) surgery. DESIGN This was an observational, retrospective cohort analysis. SETTING This study used a multicenter claims dataset from a commercially insured population undergoing CABG surgery in the United States between 2004 and 2016. PARTICIPANTS Adults aged 18 years or older with continuous insurance enrollment and an absence of renal-related diagnoses before the index CABG surgery. INTERVENTIONS Receipt of TEE within 1 calendar day of the index CABG surgery date. MEASUREMENTS AND MAIN RESULTS Of 51,487 CABG surgeries, 5,361 (10.4%; [95% confidence interval [CI]: 10.1-10.7%]) developed acute kidney injury and the mean length of hospitalization was 8.8 days (95% CI: 8.7-8.8). The TEE group demonstrated a greater absolute risk difference (RD) for acute kidney injury by multiple linear regression, overall, (RD=+1.0; [95% CI: 0.4-1.5%]; p < 0.001) and among a low-risk subgroup (RD=+1.0; [95% CI: 0.4-1.6; p = 0.002), but not by instrumental variable analysis (RD=+0.9 [95% CI: -1.1 to 2.9%]; p = 0.362). The TEE group demonstrated a longer length of hospitalization by multiple linear regression, overall (+2.0%; [95% CI: 1.1-2.9%]; p < 0.001), among a low-risk subgroup (+2.2%; [95% CI: 1.2-3.2%]; p < 0.001), and by instrumental variable analysis (+10.3%; [95% CI: 7.0-13.7%]; p < 0.001). CONCLUSIONS TEE monitoring in CABG surgery was not associated with a lower incidence of acute kidney injury or decreased length of hospitalization. These findings highlight the importance of additional work to study the clinical effectiveness of TEE in CABG surgery.
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Affiliation(s)
- Emily J MacKay
- Department of Anesthesiology & Critical Care, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA; Penn Center for Perioperative Outcomes Research and Transformation (CPORT), University of Pennsylvania, Philadelphia, PA; Penn's Cardiovascular Outcomes, Quality, and Evaluative Research Center (CAVOQER), University of Pennsylvania, Philadelphia, PA; Leonard Davis Institute of Health Economics (LDI), University of Pennsylvania, Philadelphia, PA.
| | - Rachel M Werner
- Department of Internal Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA; Leonard Davis Institute of Health Economics (LDI), University of Pennsylvania, Philadelphia, PA
| | - Peter W Groeneveld
- Department of Internal Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA; Penn's Cardiovascular Outcomes, Quality, and Evaluative Research Center (CAVOQER), University of Pennsylvania, Philadelphia, PA; Leonard Davis Institute of Health Economics (LDI), University of Pennsylvania, Philadelphia, PA
| | - Nimesh D Desai
- Division of Cardiovascular Surgery, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA; Penn's Cardiovascular Outcomes, Quality, and Evaluative Research Center (CAVOQER), University of Pennsylvania, Philadelphia, PA; Leonard Davis Institute of Health Economics (LDI), University of Pennsylvania, Philadelphia, PA
| | - Peter P Reese
- Leonard Davis Institute of Health Economics (LDI), University of Pennsylvania, Philadelphia, PA; Renal-Electrolyte and Hypertension Division, University of Pennsylvania, Philadelphia, PA
| | - Jacob T Gutsche
- Department of Anesthesiology & Critical Care, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA
| | - John G Augoustides
- Department of Anesthesiology & Critical Care, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA
| | - Mark D Neuman
- Department of Anesthesiology & Critical Care, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA; Penn Center for Perioperative Outcomes Research and Transformation (CPORT), University of Pennsylvania, Philadelphia, PA; Leonard Davis Institute of Health Economics (LDI), University of Pennsylvania, Philadelphia, PA
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99991
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Tomita Y, Iwadoh K, Hoshino A, Ogawa Y, Sannomiya A, Nakajima I, Fuchinoue S. Primary Nonfunction on Kidney Transplant Recipients From Donation After Circulatory Death Donors. Transplant Proc 2019; 51:2523-2526. [PMID: 31473009 DOI: 10.1016/j.transproceed.2019.01.201] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Revised: 01/12/2019] [Accepted: 01/28/2019] [Indexed: 11/18/2022]
Abstract
BACKGROUND The need for donor pool expansion remains an important task for kidney transplantation. The aim of this study is the evaluation of primary nonfunction (PNF) from donation after circulatory death (DCD) kidneys. METHODS Between 1996 and 2017, 100 kidney transplants from DCD donors were conducted in our department. We retrospectively analyzed PNF of kidney transplant recipients from DCD donors in terms of donors' and recipients' epidemiologic characteristics. RESULTS Of 100 grafts, 95 recipients (95.0%) had discontinued hemodialysis at the time of hospital discharge. Only 5 recipients (5.0%) developed PNF. All 5 PNF recipients received a single graft from an expanded criteria donor (ECD). The mean donor age in the PNF group was 65.0 (SD, 6.2) years. Significant differences between the PNF group and discontinued dialysis group were found for donor age (P < .01) and for the use of ECD kidneys (P < .02). Nevertheless, no significant difference was found between groups for several factors: a history of hypertension and cerebrovascular events, terminal creatinine levels, and graft weight. CONCLUSION The incidence of PNF from DCD kidneys was very low. Although ECD kidneys in older donors might be a significant risk factor for PNF, these findings suggest that DCD kidneys should be used more frequently for donor expansion.
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Affiliation(s)
- Yusuke Tomita
- Department of Surgery, Kidney Center, Tokyo Women's Medical University, Tokyo, Japan.
| | - Kazuhiro Iwadoh
- Department of Surgery, Kidney Center, Tokyo Women's Medical University, Tokyo, Japan
| | - Akiko Hoshino
- Department of Surgery, Kidney Center, Tokyo Women's Medical University, Tokyo, Japan
| | - Yuichi Ogawa
- Department of Surgery, Kidney Center, Tokyo Women's Medical University, Tokyo, Japan
| | - Akihito Sannomiya
- Department of Surgery, Kidney Center, Tokyo Women's Medical University, Tokyo, Japan
| | - Ichiro Nakajima
- Department of Surgery, Kidney Center, Tokyo Women's Medical University, Tokyo, Japan
| | - Shohei Fuchinoue
- Department of Surgery, Kidney Center, Tokyo Women's Medical University, Tokyo, Japan
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99992
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Ge Y, Yu Y, Zhang Y, Li X, Liu Q. Characterization of the metabolite of AdipoRon in rat and human liver microsomes by ultra-high-performance liquid chromatography combined with Q-Exactive Orbitrap tandem mass spectrometry. Biomed Chromatogr 2019; 33:e4645. [PMID: 31306503 DOI: 10.1002/bmc.4645] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 06/26/2019] [Accepted: 07/03/2019] [Indexed: 11/11/2022]
Abstract
AdipoRon is an orally active adiponectin receptor agonist. The aim of this study was to characterize the metabolites of AdipoRon in rat and human liver microsomes using ultra-high performance liquid chromatography combined with Q-Exactive Orbitrap tandem mass spectrometry (UPLC-Q-Exactive-Orbitrap-MS) together with data processing techniques including extracted ion chromatograms and a mass defect filter. AdipoRon (10 μm) was incubated with liver microsomes in the presence of NADPH and this resulted in a total of 11 metabolites being detected. The identities of these metabolites were characterized by comparing their accurate masses and fragment ions as well as their retention times with those of AdipoRon using MetWorks software. Metabolites M1-M3, M6, and M8-M11 were identified for the first time. Metabolite M4, the major metabolite both in rat and human liver microsomes, was further confirmed using the reference standard. Our results revealed that the metabolic pathways of AdipoRon in liver microsomes were N-dealkylation (M2), hydroxylation (M, M5-M9), carbonyl reduction (M4) and the formation of amide (M10 and M11). Our results provide valuable information about the in vitro metabolism of AdipoRon, which would be helpful for us to understand the mechanism of the elimination of AdipoRon and, in turn, its effectiveness and toxicity.
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Affiliation(s)
- Yingying Ge
- Department of Pharmacy, Xinyang Central Hospital, Xinyang, Henan, China
| | - Yongsheng Yu
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, Henan, China
| | - Yongjie Zhang
- Clinical Pharmacokinetics Laboratory, School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu Province, China
| | - Xiaonan Li
- Clinical Pharmacokinetics Laboratory, School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu Province, China
| | - Qingwang Liu
- Precision Targeted Therapy Discovery Center, Institute of Technology Innovation, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui, China
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99993
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Lin H, Liu K, Gao J. Surface Engineering to Boost the Performance of Nanoparticle-Based T
1
Contrast Agents. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900697] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Hongyu Lin
- State Key Laboratory of Physical Chemistry of Solid Surfaces; The MOE Laboratory of Spectrochemical Analysis & Instrumentation; The Key Laboratory for Chemical Biology of Fujian Province, and Department of Chemical Biology; College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 China
| | - Kun Liu
- State Key Laboratory of Physical Chemistry of Solid Surfaces; The MOE Laboratory of Spectrochemical Analysis & Instrumentation; The Key Laboratory for Chemical Biology of Fujian Province, and Department of Chemical Biology; College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 China
| | - Jinhao Gao
- State Key Laboratory of Physical Chemistry of Solid Surfaces; The MOE Laboratory of Spectrochemical Analysis & Instrumentation; The Key Laboratory for Chemical Biology of Fujian Province, and Department of Chemical Biology; College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 China
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99994
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Pickett MA, Naturale VF, Feldman JL. A Polarizing Issue: Diversity in the Mechanisms Underlying Apico-Basolateral Polarization In Vivo. Annu Rev Cell Dev Biol 2019; 35:285-308. [PMID: 31461314 DOI: 10.1146/annurev-cellbio-100818-125134] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Polarization along an apico-basolateral axis is a hallmark of epithelial cells and is essential for their selective barrier and transporter functions, as well as for their ability to provide mechanical resiliency to organs. Loss of polarity along this axis perturbs development and is associated with a wide number of diseases. We describe three steps involved in polarization: symmetry breaking, polarity establishment, and polarity maintenance. While the proteins involved in these processes are highly conserved among epithelial tissues and species, the execution of these steps varies widely and is context dependent. We review both theoretical principles underlying these steps and recent work demonstrating how apico-basolateral polarity is established in vivo in different tissues, highlighting how developmental and physiological contexts play major roles in the execution of the epithelial polarity program.
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Affiliation(s)
- Melissa A Pickett
- Department of Biology, Stanford University, Stanford, California 94305, USA;
| | - Victor F Naturale
- Department of Biology, Stanford University, Stanford, California 94305, USA;
| | - Jessica L Feldman
- Department of Biology, Stanford University, Stanford, California 94305, USA;
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99995
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Kouis P, Kousios A, Kanari A, Kleopa D, Papatheodorou SI, Panayiotou AG. Association of non-invasive measures of subclinical atherosclerosis and arterial stiffness with mortality and major cardiovascular events in chronic kidney disease: systematic review and meta-analysis of cohort studies. Clin Kidney J 2019; 13:842-854. [PMID: 33542824 PMCID: PMC7849940 DOI: 10.1093/ckj/sfz095] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Accepted: 07/05/2019] [Indexed: 01/17/2023] Open
Abstract
Background Non-invasive cardiovascular disease (CVD) risk prediction, in subclinical stages, aiming to stratify patients and tailor interventions remains an unmet need in chronic kidney disease (CKD). In this meta-analysis, we summarize the association of carotid intima-media thickness (cIMT), coronary artery calcium score (CACS) and pulse wave velocity (PWV) with all-cause mortality, cardiovascular (CV) mortality and CV events in non-dialysis CKD and patients on haemodialysis. Methods Systematic review and meta-analysis of prospective cohort studies. Results Out of 27 984 records, a total of 45 studies were eligible for quantitative synthesis; 11 for cIMT, 18 for CACS and 16 for PWV involving 2235, 4904 and 5717 patients, respectively. Meta-analysis was possible from pooled data of five cIMT studies (708 subjects), eight CACS studies (862 subjects) and nine PWV studies (1508 subjects). In dialysis patients, cIMT was associated with all-cause mortality [relative risk (RR) per unit increase: 1.08, 95% confidence interval (CI) 1.00-1.17, I 2: 68%] and CV mortality (RR: 1.29, 95% CI 1.14-1.47, I 2: 0%). High versus low CACS was associated with all-cause mortality (RR: 2.51, 95% CI 1.66-3.79, I 2: 5.7%) and CV events (RR: 3.77 95% CI 2.16-6.58, I 2: 20.2%). High versus low PWV was associated with all-cause (RR: 5.34, 95% CI 3.01-9.47, I 2: 0%) and CV mortality (RR: 8.55, 95% CI 4.37-16.73, I 2: 0%). The combined estimated for all-cause mortality per 1 m/s increment unit in PWV was 1.25 (95% CI 1.17-1.34, I 2: 0%) and for CV mortality was 1.24 (95% CI 1.16-1.34, I 2: 15.5%). In non-dialysis patients, CACS was associated with CV events (RR: 4.02, 95% CI 1.57-10.29, I 2: 63.4%). High versus low PWV was associated with all-cause mortality (RR: 2.52, 95% CI 1.40-4.55, I 2: 62.6%). Conclusions Non-invasive measures of atherosclerosis and arterial stiffening are associated with all-cause and CV mortality as well as CV events among patients with all stages of CKD. These markers could be considered for the evaluation of CV morbidity and mortality risks. Moreover, the results of this meta-analysis support the study of interventions, with effect on these markers of vascular disease, on long-term CVD outcomes.
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Affiliation(s)
- Panayiotis Kouis
- Cardiovascular Epidemiology and Genetics Research Lab, Cyprus International Institute for Environmental and Public Health, Cyprus University of Technology, Limassol, Cyprus.,Respiratory Physiology Laboratory, Medical School, University of Cyprus, Nicosia, Cyprus
| | - Andreas Kousios
- Cardiovascular Epidemiology and Genetics Research Lab, Cyprus International Institute for Environmental and Public Health, Cyprus University of Technology, Limassol, Cyprus.,Renal and Transplant Centre, Hammersmith Hospital, Imperial College NHS Trust, London, UK
| | - Athina Kanari
- Cardiovascular Epidemiology and Genetics Research Lab, Cyprus International Institute for Environmental and Public Health, Cyprus University of Technology, Limassol, Cyprus
| | - Daphne Kleopa
- Cardiovascular Epidemiology and Genetics Research Lab, Cyprus International Institute for Environmental and Public Health, Cyprus University of Technology, Limassol, Cyprus
| | - Stephania I Papatheodorou
- Cyprus International Institute for Environmental and Public Health, Cyprus University of Technology, Limassol, Cyprus.,Department of Epidemiology, Harvard TH Chan School of Public Health, Boston, MA, USA
| | - Andrie G Panayiotou
- Cardiovascular Epidemiology and Genetics Research Lab, Cyprus International Institute for Environmental and Public Health, Cyprus University of Technology, Limassol, Cyprus
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99996
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de Almeida E Paula F, Bezerra SM, da Cunha IW, Munhoz GC, Abreu D, Lara PN, da Costa WH, Zéqui SDC. Immunohistochemical expression of renin is a prognostic factor for recurrence in nonmetastatic renal cell carcinoma. Urol Oncol 2019; 37:947-954. [PMID: 31473089 DOI: 10.1016/j.urolonc.2019.07.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Revised: 07/07/2019] [Accepted: 07/16/2019] [Indexed: 11/25/2022]
Abstract
PURPOSE To analyze the intratumoral immunohistochemical expression of renin and its value as a prognostic factor for recurrence in nonmetastatic clear cell renal cell carcinoma (ccRCC). METHODS A total of 498 patients with nonmetastatic ccRCC from the Latin American Renal Cancer Group database who underwent partial or radical nephrectomy between 1990 and 2016 were selected. All cases were revised, and 2 distinct samples were obtained for tissue microarray construction. Ten years of follow-up was assessed, and disease-free survival rates (DFS) were analyzed. Renin expression was classified qualitatively as negative or positive. For the quantitative analysis, a cutoff was estimated using the maximum of the standardized log-rank statistic. RESULTS Nuclear renin was qualitatively positive in 360 cases (72%) and negative in 138 (28%), whereas quantitatively, an equal number of cases had ≤35% or >35% renin-positive nuclei. The absence of renin expression was associated with high-grade tumors (by ISUP and Fuhrman classification, both P < 0.001), greater microscopic venous invasion (P = 0.046), and renal vein invasion (P = 0.026). In the multivariate analyses, qualitatively negative renin expression was an unfavorable prognostic factor for DFS (RR = 2.923, P < 0.001). With regard to quantitative renin expression, a cutoff of ≤35 was associated with worse DFS (RR = 4.085, P < 0.001). CONCLUSIONS The intratumoral immunohistochemical expression of renin in patients with ccRCC provides valuable prognostic data regarding the likelihood of recurrence.
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Affiliation(s)
- Felipe de Almeida E Paula
- Department of Pelvic Surgery, Division of Urology, AC Camargo Cancer Center, São Paulo, São Paulo, Brazil; Department of Urology, Presidente Prudente Cancer Hospital, Presidente Prudente, São Paulo, Brazil.
| | | | - Isabela Werneck da Cunha
- Department of Anatomic Pathology, AC Camargo Cancer Center, São Paulo, São Paulo, Brazil; National Institute for Science and Technology in Oncogenomics and Therapeutic Innovation, AC Camargo Cancer Center, São Paulo, São Paulo, Brazil
| | | | - Diego Abreu
- Department of Urology, Pasteur Hospital, Montevideo, Montevideo, Uruguay
| | - Primo Nery Lara
- University of California Davis Comprehensive Cancer Center, Sacramento, California, United States of America; Department of Internal Medicine, Division of Hematology Oncology, University of California Davis, Sacramento, California, United States of America
| | - Walter Henriques da Costa
- Department of Pelvic Surgery, Division of Urology, AC Camargo Cancer Center, São Paulo, São Paulo, Brazil
| | - Stênio de Cássio Zéqui
- Department of Pelvic Surgery, Division of Urology, AC Camargo Cancer Center, São Paulo, São Paulo, Brazil; National Institute for Science and Technology in Oncogenomics and Therapeutic Innovation, AC Camargo Cancer Center, São Paulo, São Paulo, Brazil
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99997
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Cicaloni V, Spiga O, Dimitri GM, Maiocchi R, Millucci L, Giustarini D, Bernardini G, Bernini A, Marzocchi B, Braconi D, Santucci A. Interactive alkaptonuria database: investigating clinical data to improve patient care in a rare disease. FASEB J 2019; 33:12696-12703. [PMID: 31462106 DOI: 10.1096/fj.201901529r] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Alkaptonuria (AKU) is an ultrarare autosomal recessive disorder (MIM 203500) that is caused byby a complex set of mutations in homogentisate 1,2-dioxygenasegene and consequent accumulation of homogentisic acid (HGA), causing a significant protein oxidation. A secondary form of amyloidosis was identified in AKU and related to high circulating serum amyloid A (SAA) levels, which are linked with inflammation and oxidative stress and might contribute to disease progression and patients' poor quality of life. Recently, we reported that inflammatory markers (SAA and chitotriosidase) and oxidative stress markers (protein thiolation index) might be disease activity markers in AKU. Thanks to an international network, we collected genotypic, phenotypic, and clinical data from more than 200 patients with AKU. These data are currently stored in our AKU database, named ApreciseKUre. In this work, we developed an algorithm able to make predictions about the oxidative status trend of each patient with AKU based on 55 predictors, namely circulating HGA, body mass index, total cholesterol, SAA, and chitotriosidase. Our general aim is to integrate the data of apparently heterogeneous patients with AKUAKU by using specific bioinformatics tools, in order to identify pivotal mechanisms involved in AKU for a preventive, predictive, and personalized medicine approach to AKU.-Cicaloni, V., Spiga, O., Dimitri, G. M., Maiocchi, R., Millucci, L., Giustarini, D., Bernardini, G., Bernini, A., Marzocchi, B., Braconi, D., Santucci, A. Interactive alkaptonuria database: investigating clinical data to improve patient care in a rare disease.
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Affiliation(s)
- Vittoria Cicaloni
- Department of Biotechnology, Chemistry, and Pharmacy, University of Siena, Siena, Italy.,Toscana Life Sciences Foundation, Siena, Italy
| | - Ottavia Spiga
- Department of Biotechnology, Chemistry, and Pharmacy, University of Siena, Siena, Italy
| | | | - Rebecca Maiocchi
- Department of Biotechnology, Chemistry, and Pharmacy, University of Siena, Siena, Italy.,Toscana Life Sciences Foundation, Siena, Italy
| | - Lia Millucci
- Department of Biotechnology, Chemistry, and Pharmacy, University of Siena, Siena, Italy
| | - Daniela Giustarini
- Department of Biotechnology, Chemistry, and Pharmacy, University of Siena, Siena, Italy
| | - Giulia Bernardini
- Department of Biotechnology, Chemistry, and Pharmacy, University of Siena, Siena, Italy
| | - Andrea Bernini
- Department of Biotechnology, Chemistry, and Pharmacy, University of Siena, Siena, Italy
| | - Barbara Marzocchi
- Department of Biotechnology, Chemistry, and Pharmacy, University of Siena, Siena, Italy.,Unità Operativa Complessa (UOC) Patologia Clinica, Azienda Ospedaliera Senese, Siena, Italy
| | - Daniela Braconi
- Department of Biotechnology, Chemistry, and Pharmacy, University of Siena, Siena, Italy
| | - Annalisa Santucci
- Department of Biotechnology, Chemistry, and Pharmacy, University of Siena, Siena, Italy
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99998
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Olivença DV, Fonseca LL, Voit EO, Pinto FR. Thickness of the airway surface liquid layer in the lung is affected in cystic fibrosis by compromised synergistic regulation of the ENaC ion channel. J R Soc Interface 2019; 16:20190187. [PMID: 31455163 DOI: 10.1098/rsif.2019.0187] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
The lung epithelium is lined with a layer of airway surface liquid (ASL) that is crucial for healthy lung function. ASL thickness is controlled by two ion channels: epithelium sodium channel (ENaC) and cystic fibrosis (CF) transmembrane conductance regulator (CFTR). Here, we present a minimal mathematical model of ENaC, CFTR and ASL regulation that sheds light on the control of ENaC by the short palate lung and nasal epithelial clone 1 (SPLUNC1) protein and by phosphatidylinositol 4,5-biphosphate (PI(4,5)P2). The model, despite its simplicity, yields a good fit to experimental observations and is an effective tool for exploring the interplay between ENaC, CFTR and ASL. Steady-state data and dynamic information constrain the model's parameters without ambiguities. Testing the hypothesis that PI(4,5)P2 protects ENaC from ubiquitination suggests that this protection does not improve the model results and that the control of the ENaC opening probability by PI(4,5)P2 is sufficient to explain all available data. The model analysis further demonstrates that ASL at the steady state is sensitive to small changes in PI(4,5)P2 abundance, particularly in CF conditions, which suggests that manipulation of phosphoinositide metabolism may promote therapeutic benefits for CF patients.
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Affiliation(s)
- Daniel V Olivença
- Faculty of Sciences, BioISI-Biosystems and Integrative Sciences Institute, University of Lisboa, Lisboa, Portugal
| | - Luis L Fonseca
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, USA
| | - Eberhard O Voit
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, USA
| | - Francisco R Pinto
- Faculty of Sciences, BioISI-Biosystems and Integrative Sciences Institute, University of Lisboa, Lisboa, Portugal
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99999
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The Role of Neutrophils and Neutrophil Extracellular Traps in Vascular Damage in Systemic Lupus Erythematosus. J Clin Med 2019; 8:jcm8091325. [PMID: 31466329 PMCID: PMC6780421 DOI: 10.3390/jcm8091325] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 08/16/2019] [Accepted: 08/25/2019] [Indexed: 12/14/2022] Open
Abstract
Systemic lupus erythematosus (SLE) is an autoimmune syndrome of unknown etiology, characterized by multi-organ inflammation and clinical heterogeneity. SLE affects mostly women and is associated with a high risk of cardiovascular disease. As the therapeutic management of SLE improved, a pattern of early atherosclerotic disease became one of the hallmarks of late disease morbidity and mortality. Neutrophils emerged as important players in SLE pathogenesis and they are associated with increased risk of developing atherosclerotic disease and vascular damage. Enhanced neutrophil extracellular trap (NET) formation was linked to vasculopathy in both SLE and non-SLE subjects and may promote enhanced coronary plaque formation and lipoprotein dysregulation. Foundational work provided insight into the complex relationship between NETs and immune and tissue resident cells within the diseased artery. In this review, we highlight the mechanistic link between neutrophils, NETs, and atherosclerosis within the context of both SLE and non-SLE subjects. We aim to identify actionable pathways that will drive future research toward translational therapeutics, with the ultimate goal of preventing early morbidity and mortality in SLE.
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100000
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Rempel LCT, Faustino VD, Foresto-Neto O, Fanelli C, Arias SCA, Moreira GCDS, Nascimento TF, Ávila VF, Malheiros DMAC, Câmara NOS, Fujihara CK, Zatz R. Chronic exposure to hypoxia attenuates renal injury and innate immunity activation in the remnant kidney model. Am J Physiol Renal Physiol 2019; 317:F1285-F1292. [PMID: 31461352 DOI: 10.1152/ajprenal.00367.2018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Hypoxia is thought to influence the pathogenesis of chronic kidney disease, but direct evidence that prolonged exposure to tissue hypoxia initiates or aggravates chronic kidney disease is lacking. We tested this hypothesis by chronically exposing normal rats and rats with 5/6 nephrectomy (Nx) to hypoxia. In addition, we investigated whether such effect of hypoxia would involve activation of innate immunity. Adult male Munich-Wistar rats underwent Nx (n = 54) or sham surgery (sham; n = 52). Twenty-six sham rats and 26 Nx rats remained in normoxia, whereas 26 sham rats and 28 Nx rats were kept in a normobaric hypoxia chamber (12% O2) for 8 wk. Hypoxia was confirmed by immunohistochemistry for pimonidazole. Hypoxia was confined to the medullary area in sham + normoxia rats and spread to the cortical area in sham + hypoxia rats, without changing the peritubular capillary density. Exposure to hypoxia promoted no renal injury or elevation of the content of IL-1β or Toll-like receptor 4 in sham rats. In Nx, hypoxia also extended to the cortical area without ameliorating the peritubular capillary rarefaction but, unexpectedly, attenuated hypertension, inflammation, innate immunity activation, renal injury, and oxidative stress. The present study, in disagreement with current concepts, shows evidence that hypoxia exerts a renoprotective effect in the Nx model instead of acting as a factor of renal injury. The mechanisms for this unexpected beneficial effect are unclear and may involve NF-κB inhibition, amelioration of oxidative stress, and limitation of angiotensin II production by the renal tissue.
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Affiliation(s)
- Lisienny Campoli Tono Rempel
- Renal Division, Department of Clinical Medicine, Faculty of Medicine, University of São Paulo, São Paulo, Brazil
| | - Viviane Dias Faustino
- Renal Division, Department of Clinical Medicine, Faculty of Medicine, University of São Paulo, São Paulo, Brazil
| | - Orestes Foresto-Neto
- Renal Division, Department of Clinical Medicine, Faculty of Medicine, University of São Paulo, São Paulo, Brazil
| | - Camilla Fanelli
- Renal Division, Department of Clinical Medicine, Faculty of Medicine, University of São Paulo, São Paulo, Brazil
| | - Simone Costa Alarcon Arias
- Renal Division, Department of Clinical Medicine, Faculty of Medicine, University of São Paulo, São Paulo, Brazil
| | | | - Thalita Fabiana Nascimento
- Renal Division, Department of Clinical Medicine, Faculty of Medicine, University of São Paulo, São Paulo, Brazil
| | - Victor Ferreira Ávila
- Renal Division, Department of Clinical Medicine, Faculty of Medicine, University of São Paulo, São Paulo, Brazil
| | | | - Niels Olsen Saraiva Câmara
- Renal Division, Department of Clinical Medicine, Faculty of Medicine, University of São Paulo, São Paulo, Brazil.,Laboratory of Transplantation Immunobiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Clarice Kazue Fujihara
- Renal Division, Department of Clinical Medicine, Faculty of Medicine, University of São Paulo, São Paulo, Brazil
| | - Roberto Zatz
- Renal Division, Department of Clinical Medicine, Faculty of Medicine, University of São Paulo, São Paulo, Brazil
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