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Duclos F, Abell LM, Harden DG, Pike K, Nowak K, Locke GA, Duke GJ, Liu X, Fernando G, Shaw SA, Vokits BP, Wurtz NR, Viet A, Valente MN, Stachura S, Sleph P, Khan JA, Gao J, Dongre AR, Zhao L, Wexler RR, Gordon DA, Kick EK. Triazolopyrimidines identified as reversible myeloperoxidase inhibitors. MEDCHEMCOMM 2017; 8:2093-2099. [PMID: 30108726 PMCID: PMC6071758 DOI: 10.1039/c7md00268h] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Accepted: 10/05/2017] [Indexed: 12/31/2022]
Abstract
Myeloperoxidase, a mammalian peroxidase involved in the immune system as an anti-microbial first responder, can produce hypochlorous acid in response to invading pathogens. Myeloperoxidase has been implicated in several chronic pathological diseases due to the chronic production of hypochlorous acid, as well as other reactive radical species. A high throughput screen and triaging protocol was developed to identify a reversible inhibitor of myeloperoxidase toward the potential treatment of chronic diseases such as atherosclerosis. The identification and characterization of a reversible myeloperoxidase inhibitor, 7-(benzyloxy)-3H-[1,2,3]triazolo[4,5-d]pyrimidin-5-amine is described.
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Affiliation(s)
- Franck Duclos
- Bristol-Myers Squibb Company , P.O. Box 5400 , Princeton , New Jersey 08543-5400 , USA .
| | - Lynn M Abell
- Bristol-Myers Squibb Company , P.O. Box 5400 , Princeton , New Jersey 08543-5400 , USA .
| | - David G Harden
- Bristol-Myers Squibb Company , P.O. Box 5400 , Princeton , New Jersey 08543-5400 , USA .
| | - Kristen Pike
- Bristol-Myers Squibb Company , P.O. Box 5400 , Princeton , New Jersey 08543-5400 , USA .
| | - Kimberly Nowak
- Bristol-Myers Squibb Company , P.O. Box 5400 , Princeton , New Jersey 08543-5400 , USA .
| | - Gregory A Locke
- Bristol-Myers Squibb Company , P.O. Box 5400 , Princeton , New Jersey 08543-5400 , USA .
| | - Gerald J Duke
- Bristol-Myers Squibb Company , P.O. Box 5400 , Princeton , New Jersey 08543-5400 , USA .
| | - Xiaoqin Liu
- Bristol-Myers Squibb Company , P.O. Box 5400 , Princeton , New Jersey 08543-5400 , USA .
| | - Gayani Fernando
- Bristol-Myers Squibb Company , P.O. Box 5400 , Princeton , New Jersey 08543-5400 , USA .
| | - Scott A Shaw
- Bristol-Myers Squibb Company , P.O. Box 5400 , Princeton , New Jersey 08543-5400 , USA .
| | - Benjamin P Vokits
- Bristol-Myers Squibb Company , P.O. Box 5400 , Princeton , New Jersey 08543-5400 , USA .
| | - Nicholas R Wurtz
- Bristol-Myers Squibb Company , P.O. Box 5400 , Princeton , New Jersey 08543-5400 , USA .
| | - Andrew Viet
- Bristol-Myers Squibb Company , P.O. Box 5400 , Princeton , New Jersey 08543-5400 , USA .
| | - Meriah N Valente
- Bristol-Myers Squibb Company , P.O. Box 5400 , Princeton , New Jersey 08543-5400 , USA .
| | - Sylwia Stachura
- Bristol-Myers Squibb Company , P.O. Box 5400 , Princeton , New Jersey 08543-5400 , USA .
| | - Paul Sleph
- Bristol-Myers Squibb Company , P.O. Box 5400 , Princeton , New Jersey 08543-5400 , USA .
| | - Javed A Khan
- Bristol-Myers Squibb Company , P.O. Box 5400 , Princeton , New Jersey 08543-5400 , USA .
| | - Ji Gao
- Bristol-Myers Squibb Company , P.O. Box 5400 , Princeton , New Jersey 08543-5400 , USA .
| | - Ashok R Dongre
- Bristol-Myers Squibb Company , P.O. Box 5400 , Princeton , New Jersey 08543-5400 , USA .
| | - Lei Zhao
- Bristol-Myers Squibb Company , P.O. Box 5400 , Princeton , New Jersey 08543-5400 , USA .
| | - Ruth R Wexler
- Bristol-Myers Squibb Company , P.O. Box 5400 , Princeton , New Jersey 08543-5400 , USA .
| | - David A Gordon
- Bristol-Myers Squibb Company , P.O. Box 5400 , Princeton , New Jersey 08543-5400 , USA .
| | - Ellen K Kick
- Bristol-Myers Squibb Company , P.O. Box 5400 , Princeton , New Jersey 08543-5400 , USA .
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202
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Computational design of bio-inspired carnosine-based HOBr antioxidants. J Comput Aided Mol Des 2017; 31:905-913. [DOI: 10.1007/s10822-017-0060-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2017] [Accepted: 08/31/2017] [Indexed: 01/15/2023]
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203
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Abstract
The pre-metastatic niche — the accumulation of aberrant immune cells and extracellular matrix proteins in target organs — primes the initially healthy organ microenvironment and renders it amenable for subsequent metastatic cell colonization. By attracting metastatic cancer cells, mimics of the pre-metastatic niche offer both diagnostic and therapeutic potential. However, deconstructing the complexity of the niche by identifying the interactions between cell populations and the mediatory roles of the immune system, soluble factors, extracellular matrix proteins, and stromal cells has proved challenging. Experimental models need to recapitulate niche-population biology in situ and mediate in vivo tumour-cell homing, colonization and proliferation. In this Review, we outline the biology of the pre-metastatic niche and discuss advances in engineered niche-mimicking biomaterials that regulate the behaviour of tumour cells at an implant site. Such oncomaterials offer strategies for early detection of metastatic events, inhibiting the formation of the pre-metastatic niche, and attenuating metastatic progression.
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204
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Akcalı A, Bostanci N, Özçaka Ö, Gümüş P, Öztürk-Ceyhan B, Tervahartiala T, Husu H, Buduneli N, Sorsa T, Belibasakis GN. Gingival Inflammation and Salivary or Serum Granulocyte-Secreted Enzymes in Patients With Polycystic Ovary Syndrome. J Periodontol 2017; 88:1145-1152. [PMID: 28598286 DOI: 10.1902/jop.2017.170043] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND The objective of this cross-sectional study is to investigate levels of salivary and serum matrix metalloproteinase (MMP)-9, myeloperoxidase (MPO), neutrophil elastase (NE), and MMP-9/tissue inhibitor of MMP-1 (TIMP)-1 ratio in patients with polycystic ovary syndrome (PCOS) and systemically healthy controls in the presence or absence of gingivitis. METHODS Serum and salivary levels of these biomarkers were evaluated in the following: 1) periodontally healthy women with PCOS (n = 45); 2) women with PCOS and gingivitis (n = 35); 3) systemically and periodontally healthy women (n = 25); and 4) systemically healthy women with gingivitis (n = 20). Enzyme-linked immunosorbent assay was used to determine levels of these biomarkers. A full-mouth clinical periodontal evaluation was performed for each patient. RESULTS Salivary MMP-9 and NE levels, as well as MMP-9/TIMP-1 ratios, were higher in the systemically healthy women with gingivitis compared with periodontally healthy women with PCOS (P <0.001; P <0.01; and P <0.0001, respectively). Serum MMP-9 and MPO levels were higher in women with PCOS and gingivitis compared with periodontally healthy women with PCOS (P <0.05). Serum MMP-9 levels were lower in healthy women with gingivitis than systemically and periodontally healthy women or women with PCOS and gingivitis (P <0.05). PCOS groups exhibited a positive correlation among clinical periodontal parameters and serum MMP-9 levels or salivary MPO, NE levels, and MMP-9/MMP-1 ratio. Correlation was negative among clinical periodontal parameters and serum MMP-9 levels and MMP-9/TIMP-1 ratio in systemically healthy patients (P <0.05). CONCLUSIONS The present findings emphasize that PCOS and gingival inflammation are associated with each other, as evidenced by salivary and serum levels of neutrophilic enzymes. This interaction may contribute to the perturbation of ovarian remodeling in PCOS.
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Affiliation(s)
- Aliye Akcalı
- Department of Periodontology, School of Dentistry, Ege University, İzmir, Turkey
| | - Nagihan Bostanci
- Department of Dental Medicine, Karolinska Institute, Huddinge, Sweden
| | - Özgun Özçaka
- Department of Periodontology, School of Dentistry, Ege University, İzmir, Turkey
| | - Pınar Gümüş
- Department of Periodontology, School of Dentistry, Ege University, İzmir, Turkey
| | | | - Taina Tervahartiala
- Department of Oral and Maxillofacial Diseases, Institute of Dentistry, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
| | - Heidi Husu
- Department of Oral and Maxillofacial Diseases, Institute of Dentistry, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
| | - Nurcan Buduneli
- Department of Periodontology, School of Dentistry, Ege University, İzmir, Turkey
| | - Timo Sorsa
- Department of Dental Medicine, Karolinska Institute, Huddinge, Sweden.,Department of Oral and Maxillofacial Diseases, Institute of Dentistry, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
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205
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Marcovecchio ML, de Giorgis T, Di Giovanni I, Chiavaroli V, Chiarelli F, Mohn A. Association between markers of endothelial dysfunction and early signs of renal dysfunction in pediatric obesity and type 1 diabetes. Pediatr Diabetes 2017; 18:283-289. [PMID: 27246625 DOI: 10.1111/pedi.12391] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Revised: 02/11/2016] [Accepted: 03/23/2016] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND To evaluate whether circulating markers of endothelial dysfunction, such as intercellular adhesion molecule-1 (ICAM-1) and myeloperoxidase (MPO), are increased in youth with obesity and in those with type 1 diabetes (T1D) at similar levels, and whether their levels are associated with markers of renal function. METHODS A total of 60 obese youth [M/F: 30/30, age: 12.5 ± 2.8 yr; body mass index (BMI) z-score: 2.26 ± 0.46], 30 with T1D (M/F: 15/15; age: 12.9 ± 2.4 yr; BMI z-score: 0.45 ± 0.77), and 30 healthy controls (M/F: 15/15, age: 12.4 ± 3.3 yr, BMI z-score: -0.25 ± 0.56) were recruited. Anthropometric measurements were assessed and a blood sample was collected to measure ICAM-1, MPO, creatinine, cystatin C and lipid levels. A 24-h urine collection was obtained for assessing albumin excretion rate (AER). RESULTS Levels of ICAM-1 and MPO were significantly higher in obese [ICAM-1: 0.606 (0.460-1.033) µg/mL; MPO: 136.6 (69.7-220.8) ng/mL] and T1D children [ICAM-1: 0.729 (0.507-0.990) µg/mL; MPO: 139.5 (51.0-321.3) ng/mL] compared with control children [ICAM-1: 0.395 (0.272-0.596) µg/mL MPO: 41.3 (39.7-106.9) ng/mL], whereas no significant difference was found between T1D and obese children. BMI z-score was significantly associated with ICAM-1 (β = 0.21, p = 0.02) and MPO (β = 0.41, p < 0.001). A statistically significant association was also found between ICAM-1 and markers of renal function (AER: β = 0.21, p = 0.03; e-GFR: β = 0.19, p = 0.04), after adjusting for BMI. CONCLUSIONS Obese children have increased markers of endothelial dysfunction and early signs of renal damage, similarly to children with T1D, confirming obesity to be a cardiovascular risk factor as T1D. The association between ICAM-1 with e-GFR and AER confirm the known the association between general endothelial and renal dysfunction.
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Affiliation(s)
- M L Marcovecchio
- Department of Paediatrics, "G. d'Annunzio" University, Chieti, Italy.,Center of Excellence on Aging, "G. d'Annunzio" University Foundation, Chieti, Italy
| | - T de Giorgis
- Department of Paediatrics, "G. d'Annunzio" University, Chieti, Italy.,Center of Excellence on Aging, "G. d'Annunzio" University Foundation, Chieti, Italy
| | - I Di Giovanni
- Department of Paediatrics, "G. d'Annunzio" University, Chieti, Italy.,Center of Excellence on Aging, "G. d'Annunzio" University Foundation, Chieti, Italy
| | - V Chiavaroli
- Department of Paediatrics, "G. d'Annunzio" University, Chieti, Italy.,Center of Excellence on Aging, "G. d'Annunzio" University Foundation, Chieti, Italy
| | - F Chiarelli
- Department of Paediatrics, "G. d'Annunzio" University, Chieti, Italy.,Center of Excellence on Aging, "G. d'Annunzio" University Foundation, Chieti, Italy
| | - A Mohn
- Department of Paediatrics, "G. d'Annunzio" University, Chieti, Italy.,Center of Excellence on Aging, "G. d'Annunzio" University Foundation, Chieti, Italy
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Rocha-Penha L, Caldeira-Dias M, Tanus-Santos JE, de Carvalho Cavalli R, Sandrim VC. Myeloperoxidase in Hypertensive Disorders of Pregnancy and Its Relation With Nitric Oxide. Hypertension 2017; 69:1173-1180. [PMID: 28461600 DOI: 10.1161/hypertensionaha.116.08854] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Revised: 12/21/2016] [Accepted: 04/04/2017] [Indexed: 01/15/2023]
Abstract
Elevated levels of myeloperoxidase have been demonstrated in women with preeclampsia where it may contribute to endothelial dysfunction mediated, in part, by nitric oxide impairment. In this study, we investigated myeloperoxidase in hypertensive disorders of pregnancy and its contribution to the impairment of the vasodilator nitric oxide. We found higher levels of myeloperoxidase in supernatant from human umbilical vein endothelial cells cultures incubated with plasma from preeclampsia group compared with healthy pregnant women. Further, we measured plasma concentration and activity of myeloperoxidase in 219 healthy pregnant women, 130 gestational hypertension (on antihypertensive therapy or not), and 143 preeclampsia patients (on antihypertensive therapy or not). We found that patients with preeclampsia and gestational hypertension without antihypertensive treatment showed higher levels and activity of this enzyme, respectively. Moreover, the inhibition of myeloperoxidase activity in vitro improved nitric oxide bioavailability. Our results indicate a higher cardiovascular risk in pregnant women with hypertensive disorders, and that active myeloperoxidase may play a role in endothelial dysfunction in these conditions by impairment of nitric oxide availability. Besides, the use of antihypertensive drugs seems to decrease enzyme levels suggesting a new protective feature for these drugs.
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Affiliation(s)
- Lilliam Rocha-Penha
- From the Department of Pharmacology, Institute of Biosciences of Botucatu, Universidade Estadual Paulista (UNESP), São Paulo, Brazil (L.R.-P., M.C.-D., V.C.S.); and Department of Pharmacology (J.E.T.-S.) and Department of Gynecology and Obstetrics (R.d.C.C.), Faculty of Medicine of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, Brazil
| | - Mayara Caldeira-Dias
- From the Department of Pharmacology, Institute of Biosciences of Botucatu, Universidade Estadual Paulista (UNESP), São Paulo, Brazil (L.R.-P., M.C.-D., V.C.S.); and Department of Pharmacology (J.E.T.-S.) and Department of Gynecology and Obstetrics (R.d.C.C.), Faculty of Medicine of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, Brazil
| | - José Eduardo Tanus-Santos
- From the Department of Pharmacology, Institute of Biosciences of Botucatu, Universidade Estadual Paulista (UNESP), São Paulo, Brazil (L.R.-P., M.C.-D., V.C.S.); and Department of Pharmacology (J.E.T.-S.) and Department of Gynecology and Obstetrics (R.d.C.C.), Faculty of Medicine of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, Brazil
| | - Ricardo de Carvalho Cavalli
- From the Department of Pharmacology, Institute of Biosciences of Botucatu, Universidade Estadual Paulista (UNESP), São Paulo, Brazil (L.R.-P., M.C.-D., V.C.S.); and Department of Pharmacology (J.E.T.-S.) and Department of Gynecology and Obstetrics (R.d.C.C.), Faculty of Medicine of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, Brazil
| | - Valéria Cristina Sandrim
- From the Department of Pharmacology, Institute of Biosciences of Botucatu, Universidade Estadual Paulista (UNESP), São Paulo, Brazil (L.R.-P., M.C.-D., V.C.S.); and Department of Pharmacology (J.E.T.-S.) and Department of Gynecology and Obstetrics (R.d.C.C.), Faculty of Medicine of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, Brazil.
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207
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Tian R, Ding Y, Peng YY, Lu N. Inhibition of Myeloperoxidase- and Neutrophil-Mediated Hypochlorous Acid Formation in Vitro and Endothelial Cell Injury by (-)-Epigallocatechin Gallate. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:3198-3203. [PMID: 28361543 DOI: 10.1021/acs.jafc.7b00631] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Myeloperoxidase (MPO) plays important roles in various diseases through its unique chlorinating activity to catalyze excess hypochlorous acid (HOCl) formation. Epidemiological studies indicate an inverse correlation between plant polyphenol consumption and the incidence of cardiovascular diseases. Here we showed that (-)-epigallocatechin gallate (EGCG), the main flavonoid present in green tea, dose-dependently inhibited MPO-mediated HOCl formation in vitro (chlorinating activities of MPO: 50.2 ± 5.7% for 20 μM EGCG versus 100 ± 5.6% for control, P < 0.01). UV-vis spectral and docking studies indicated that EGCG bound to the active site (heme) of MPO and resulted in the accumulation of compound II, which was unable to produce HOCl. This flavonoid also effectively inhibited HOCl generation in activated neutrophils (HOCl formation: 65.0 ± 5.6% for 20 μM EGCG versus 100 ± 6.2% for control, P < 0.01) without influencing MPO and Nox2 release and superoxide formation, suggesting that EGCG specifically inhibited MPO but not NADPH oxidase activity in activated neutrophils. Moreover, EGCG inhibited MPO (or neutrophil)-mediated HOCl formation in human umbilical vein endothelial cells (HUVEC) culture and accordingly protected HUVEC from MPO (or neutrophil)-induced injury (P < 0.05, all cases), although it did not induce cytotoxicity to HUVEC (P > 0.05, all cases). Our results indicate that dietary EGCG is an effective and specific inhibitor of MPO activity and may participate in the regulation of immune responses at inflammatory sites.
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Affiliation(s)
- Rong Tian
- Key Laboratory of Functional Small Organic Molecule, Ministry of Education, Key Laboratory of Green Chemistry in Jiangxi Province, and College of Chemistry and Chemical Engineering, Jiangxi Normal University , Nanchang, China
| | - Yun Ding
- Key Laboratory of Functional Small Organic Molecule, Ministry of Education, Key Laboratory of Green Chemistry in Jiangxi Province, and College of Chemistry and Chemical Engineering, Jiangxi Normal University , Nanchang, China
| | - Yi-Yuan Peng
- Key Laboratory of Functional Small Organic Molecule, Ministry of Education, Key Laboratory of Green Chemistry in Jiangxi Province, and College of Chemistry and Chemical Engineering, Jiangxi Normal University , Nanchang, China
| | - Naihao Lu
- Key Laboratory of Functional Small Organic Molecule, Ministry of Education, Key Laboratory of Green Chemistry in Jiangxi Province, and College of Chemistry and Chemical Engineering, Jiangxi Normal University , Nanchang, China
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208
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Poppelaars F, van Werkhoven MB, Kotimaa J, Veldhuis ZJ, Ausema A, Broeren SGM, Damman J, Hempel JC, Leuvenink HGD, Daha MR, van Son WJ, van Kooten C, van Os RP, Hillebrands JL, Seelen MA. Critical role for complement receptor C5aR2 in the pathogenesis of renal ischemia-reperfusion injury. FASEB J 2017; 31:3193-3204. [PMID: 28396344 DOI: 10.1096/fj.201601218r] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Accepted: 03/27/2017] [Indexed: 01/15/2023]
Abstract
The complement system, and specifically C5a, is involved in renal ischemia-reperfusion (IR) injury. The 2 receptors for complement anaphylatoxin C5a (C5aR1 and C5aR2) are expressed on leukocytes as well as on renal epithelium. Extensive evidence shows that C5aR1 inhibition protects kidneys from IR injury; however, the role of C5aR2 in IR injury is less clear as initial studies proposed the hypothesis that C5aR2 functions as a decoy receptor. By Using wild-type, C5aR1-/-, and C5aR2-/- mice in a model of renal IR injury, we found that a deficiency of either of these receptors protected mice from renal IR injury. Surprisingly, C5aR2-/- mice were most protected and had lower creatinine levels and reduced acute tubular necrosis. Next, an in vivo migration study demonstrated that leukocyte chemotaxis was unaffected in C5aR2-/- mice, whereas neutrophil activation was reduced by C5aR2 deficiency. To further investigate the contribution of renal cell-expressed C5aR2 vs leukocyte-expressed C5aR2 to renal IR injury, bone marrow chimeras were created. Our data show that both renal cell-expressed C5aR2 and leukocyte-expressed C5aR2 mediate IR-induced renal dysfunction. These studies reveal the importance of C5aR2 in renal IR injury. They further show that C5aR2 is a functional receptor, rather than a decoy receptor, and may provide a new target for intervention.-Poppelaars, F., van Werkhoven, M. B., Kotimaa, J., Veldhuis, Z. J., Ausema, A., Broeren, S. G. M., Damman, J., Hempel, J. C., Leuvenink, H. G. D., Daha, M. R., van Son, W. J., van Kooten, C., van Os, R. P., Hillebrands, J.-L., Seelen, M. A. Critical role for complement receptor C5aR2 in the pathogenesis of renal ischemia-reperfusion injury.
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Affiliation(s)
- Felix Poppelaars
- Division of Nephrology, Department of Internal Medicine, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands
| | - Maaike B van Werkhoven
- Division of Nephrology, Department of Internal Medicine, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands
| | - Juha Kotimaa
- Department of Nephrology, Leiden University Medical Centre, Leiden, The Netherlands
| | - Zwanida J Veldhuis
- Department of Surgery, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands
| | - Albertina Ausema
- Laboratory of Ageing Biology and Stem Cells, European Research Institute for the Biology of Ageing, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands
| | - Stefan G M Broeren
- Division of Nephrology, Department of Internal Medicine, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands
| | - Jeffrey Damman
- Department of Pathology, University of Amsterdam, Academic Medical Centre, Amsterdam, The Netherlands
| | - Julia C Hempel
- Division of Nephrology, Department of Internal Medicine, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands
| | - Henri G D Leuvenink
- Department of Surgery, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands
| | - Mohamed R Daha
- Division of Nephrology, Department of Internal Medicine, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands.,Department of Nephrology, Leiden University Medical Centre, Leiden, The Netherlands
| | - Willem J van Son
- Division of Nephrology, Department of Internal Medicine, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands
| | - Cees van Kooten
- Department of Nephrology, Leiden University Medical Centre, Leiden, The Netherlands
| | - Ronald P van Os
- Laboratory of Ageing Biology and Stem Cells, European Research Institute for the Biology of Ageing, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands
| | - Jan-Luuk Hillebrands
- Division of Pathology, Department of Pathology and Medical Biology, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands
| | - Marc A Seelen
- Division of Nephrology, Department of Internal Medicine, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands;
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209
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Update on Chlamydia trachomatis Vaccinology. CLINICAL AND VACCINE IMMUNOLOGY : CVI 2017; 24:CVI.00543-16. [PMID: 28228394 DOI: 10.1128/cvi.00543-16] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Attempts to produce a vaccine to protect against Chlamydia trachomatis-induced trachoma were initiated more than 100 years ago and continued for several decades. Using whole organisms, protective responses were obtained. However, upon exposure to C. trachomatis, disease exacerbation developed in some immunized individuals, precluding the implementation of the vaccine. Evidence of the role of C. trachomatis as a sexually transmitted pathogen started to emerge in the 1960s, and it soon became evident that it can cause acute infections and long-term sequelae in women, men, and newborns. The main focus of this minireview is to summarize recent findings and discuss formulations, including antigens, adjuvants, routes, and delivery systems for immunization, primarily explored in the female mouse model, with the goal of implementing a vaccine against C. trachomatis genital infections.
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210
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Arafat SN, Robert MC, Abud T, Spurr-Michaud S, Amparo F, Dohlman CH, Dana R, Gipson IK. Elevated Neutrophil Elastase in Tears of Ocular Graft-Versus-Host Disease Patients. Am J Ophthalmol 2017; 176:46-52. [PMID: 28073648 DOI: 10.1016/j.ajo.2016.12.026] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Revised: 12/27/2016] [Accepted: 12/30/2016] [Indexed: 12/20/2022]
Abstract
PURPOSE To investigate the levels of neutrophil elastase (NE), matrix metalloproteinases (MMPs), and myeloperoxidase (MPO) in tear washes of patients with ocular graft-vs-host disease (oGVHD). DESIGN Case-control study. METHODS Based on established criteria, oGVHD patients (n = 14; 28 eyes) and age-/sex-matched healthy controls (n = 14; 28 eyes) were enrolled. Tear washes were collected and analyzed for NE using a single-analyte enzyme-linked immunosorbent assay (ELISA). MMPs (1, 2, 3, 7, 8, 9, 12), MPO, and tissue inhibitor of matrix metalloproteinase (TIMP)-1 were analyzed using multianalyte bead-based ELISA assays. Total MMP activity was measured using a fluorimetric assay. Correlation studies were performed between NE, MMP-8, MMP-9, and MPO within study groups. RESULTS NE, MMP-8, MMP-9, and MPO levels were elevated in oGVHD tears when compared with controls (P < .0001). NE was the most elevated analyte. MMP activity was higher and TIMP-1 levels were lower in oGVHD than in control (P < .0001). In oGVHD, NE significantly correlated with MMP-8 (r = 0.92), MMP-9 (r = 0.90), and MPO (r = 0.79) (P < .0001). MMP-8 correlated with MMP-9 (r = 0.96, P < .0001), and MPO (r = 0.60, P = .001). MMP-9 correlated with MPO (r = 0.55, P = .002). In controls, NE, MMP-9, and MPO significantly correlated with each other (P < .0001). CONCLUSIONS The marked increase in NE in oGVHD tears that correlated strongly with elevated MMP-8, MMP-9, and MPO suggests a common neutrophilic source and provides evidence of neutrophil activity on the ocular surface of oGVHD patients.
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Affiliation(s)
- Samer N Arafat
- Schepens Eye Research Institute-Massachusetts Eye and Ear, Harvard Medical School, Boston, Massachusetts; Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, Massachusetts
| | - Marie-Claude Robert
- Schepens Eye Research Institute-Massachusetts Eye and Ear, Harvard Medical School, Boston, Massachusetts; Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, Massachusetts
| | - Tulio Abud
- Schepens Eye Research Institute-Massachusetts Eye and Ear, Harvard Medical School, Boston, Massachusetts; Department of Ophthalmology and Visual Sciences, Paulista School of Medicine, Federal University of Sao Paulo-UNIFESP, Sao Paulo, Brazil
| | - Sandra Spurr-Michaud
- Schepens Eye Research Institute-Massachusetts Eye and Ear, Harvard Medical School, Boston, Massachusetts
| | - Francisco Amparo
- Schepens Eye Research Institute-Massachusetts Eye and Ear, Harvard Medical School, Boston, Massachusetts; Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, Massachusetts
| | - Claes H Dohlman
- Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, Massachusetts
| | - Reza Dana
- Schepens Eye Research Institute-Massachusetts Eye and Ear, Harvard Medical School, Boston, Massachusetts; Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, Massachusetts
| | - Ilene K Gipson
- Schepens Eye Research Institute-Massachusetts Eye and Ear, Harvard Medical School, Boston, Massachusetts.
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Pullar JM, Carr AC, Bozonet SM, Rosengrave P, Kettle AJ, Vissers MCM. Elevated seminal plasma myeloperoxidase is associated with a decreased sperm concentration in young men. Andrology 2017; 5:431-438. [DOI: 10.1111/andr.12327] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Revised: 11/20/2016] [Accepted: 12/20/2016] [Indexed: 12/11/2022]
Affiliation(s)
- J. M. Pullar
- Centre for Free Radical Research; Department of Pathology; University of Otago, Christchurch; Christchurch New Zealand
| | - A. C. Carr
- Centre for Free Radical Research; Department of Pathology; University of Otago, Christchurch; Christchurch New Zealand
| | - S. M. Bozonet
- Centre for Free Radical Research; Department of Pathology; University of Otago, Christchurch; Christchurch New Zealand
| | - P. Rosengrave
- Allan Wilson Centre for Molecular Ecology and Evolution; Department of Anatomy; University of Otago; Dunedin New Zealand
| | - A. J. Kettle
- Centre for Free Radical Research; Department of Pathology; University of Otago, Christchurch; Christchurch New Zealand
| | - M. C. M. Vissers
- Centre for Free Radical Research; Department of Pathology; University of Otago, Christchurch; Christchurch New Zealand
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212
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Ding Y, Tian R, Yang Z, Chen J, Lu N. Effects of serum albumin on the degradation and cytotoxicity of single-walled carbon nanotubes. Biophys Chem 2017; 222:1-6. [DOI: 10.1016/j.bpc.2016.12.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Revised: 12/15/2016] [Accepted: 12/20/2016] [Indexed: 12/19/2022]
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213
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Cervantes Gracia K, Llanas-Cornejo D, Husi H. CVD and Oxidative Stress. J Clin Med 2017; 6:E22. [PMID: 28230726 PMCID: PMC5332926 DOI: 10.3390/jcm6020022] [Citation(s) in RCA: 193] [Impact Index Per Article: 27.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Revised: 02/12/2017] [Accepted: 02/14/2017] [Indexed: 12/12/2022] Open
Abstract
Nowadays, it is known that oxidative stress plays at least two roles within the cell, the generation of cellular damage and the involvement in several signaling pathways in its balanced normal state. So far, a substantial amount of time and effort has been expended in the search for a clear link between cardiovascular disease (CVD) and the effects of oxidative stress. Here, we present an overview of the different sources and types of reactive oxygen species in CVD, highlight the relationship between CVD and oxidative stress and discuss the most prominent molecules that play an important role in CVD pathophysiology. Details are given regarding common pharmacological treatments used for cardiovascular distress and how some of them are acting upon ROS-related pathways and molecules. Novel therapies, recently proposed ROS biomarkers, as well as future challenges in the field are addressed. It is apparent that the search for a better understanding of how ROS are contributing to the pathophysiology of CVD is far from over, and new approaches and more suitable biomarkers are needed for the latter to be accomplished.
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Affiliation(s)
- Karla Cervantes Gracia
- Institute of Cardiovascular and Medical Sciences, University of Glasgow, BHF Glasgow Cardiovascular Research Centre, 126 University Place, Glasgow G12 8TA, UK.
| | - Daniel Llanas-Cornejo
- Institute of Cardiovascular and Medical Sciences, University of Glasgow, BHF Glasgow Cardiovascular Research Centre, 126 University Place, Glasgow G12 8TA, UK.
| | - Holger Husi
- Institute of Cardiovascular and Medical Sciences, University of Glasgow, BHF Glasgow Cardiovascular Research Centre, 126 University Place, Glasgow G12 8TA, UK.
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214
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Camaré C, Pucelle M, Nègre-Salvayre A, Salvayre R. Angiogenesis in the atherosclerotic plaque. Redox Biol 2017; 12:18-34. [PMID: 28212521 PMCID: PMC5312547 DOI: 10.1016/j.redox.2017.01.007] [Citation(s) in RCA: 264] [Impact Index Per Article: 37.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Revised: 01/04/2017] [Accepted: 01/05/2017] [Indexed: 12/12/2022] Open
Abstract
Atherosclerosis is a multifocal alteration of the vascular wall of medium and large arteries characterized by a local accumulation of cholesterol and non-resolving inflammation. Atherothrombotic complications are the leading cause of disability and mortality in western countries. Neovascularization in atherosclerotic lesions plays a major role in plaque growth and instability. The angiogenic process is mediated by classical angiogenic factors and by additional factors specific to atherosclerotic angiogenesis. In addition to its role in plaque progression, neovascularization may take part in plaque destabilization and thromboembolic events. Anti-angiogenic agents are effective to reduce atherosclerosis progression in various animal models. However, clinical trials with anti-angiogenic drugs, mainly anti-VEGF/VEGFR, used in anti-cancer therapy show cardiovascular adverse effects, and require additional investigations.
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Affiliation(s)
- Caroline Camaré
- INSERM - I2MC, U-1048, 1 avenue Jean Poulhès, BP 84225, 31432 Toulouse cedex 4, France; Université Paul Sabatier Toulouse III, Faculty of Medicine, Biochemistry Departement, Toulouse, France; CHU Toulouse, Rangueil, 1 avenue Jean Poulhès, TSA 50032, 31059 Toulouse Cedex 9, France
| | - Mélanie Pucelle
- INSERM - I2MC, U-1048, 1 avenue Jean Poulhès, BP 84225, 31432 Toulouse cedex 4, France
| | - Anne Nègre-Salvayre
- INSERM - I2MC, U-1048, 1 avenue Jean Poulhès, BP 84225, 31432 Toulouse cedex 4, France.
| | - Robert Salvayre
- INSERM - I2MC, U-1048, 1 avenue Jean Poulhès, BP 84225, 31432 Toulouse cedex 4, France; Université Paul Sabatier Toulouse III, Faculty of Medicine, Biochemistry Departement, Toulouse, France; CHU Toulouse, Rangueil, 1 avenue Jean Poulhès, TSA 50032, 31059 Toulouse Cedex 9, France.
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Abstract
The gastrointestinal alterations associated with the consumption of an obesogenic diet, such as inflammation, permeability impairment and oxidative stress, have been poorly explored in both diet-induced obesity (DIO) and genetic obesity. The aim of the present study was to examine the impact of an obesogenic diet on the gut health status of DIO rats in comparison with the Zucker (fa/fa) rat leptin receptor-deficient model of genetic obesity over time. For this purpose, female Wistar rats (n 48) were administered a standard or a cafeteria diet (CAF diet) for 12, 14·5 or 17 weeks and were compared with fa/fa Zucker rats fed a standard diet for 10 weeks. Morphometric variables, plasma biochemical parameters, myeloperoxidase (MPO) activity and reactive oxygen species (ROS) levels in the ileum were assessed, as well as the expressions of proinflammatory genes (TNF-α and inducible nitric oxide synthase (iNOS)) and intestinal permeability genes (zonula occludens-1, claudin-1 and occludin). Both the nutritional model and the genetic obesity model showed increased body weight and metabolic alterations at the final time point. An increase in intestinal ROS production and MPO activity was observed in the gastrointestinal tracts of rats fed a CAF diet but not in the genetic obesity model. TNF-α was overexpressed in the ileum of both CAF diet and fa/fa groups, and ileal inflammation was associated with the degree of obesity and metabolic alterations. Interestingly, the 17-week CAF group and the fa/fa rats exhibited alterations in the expressions of permeability genes. Relevantly, in the hyperlipidic refined sugar diet model of obesity, the responses to chronic energy overload led to time-dependent increases in gut inflammation and oxidative stress.
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216
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Wanner S, Schade J, Keinhörster D, Weller N, George SE, Kull L, Bauer J, Grau T, Winstel V, Stoy H, Kretschmer D, Kolata J, Wolz C, Bröker BM, Weidenmaier C. Wall teichoic acids mediate increased virulence in Staphylococcus aureus. Nat Microbiol 2017; 2:16257. [DOI: 10.1038/nmicrobiol.2016.257] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Accepted: 11/28/2016] [Indexed: 12/15/2022]
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217
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de Aquino PEA, Magalhães TR, Nicolau LAD, Leal LKAM, de Aquino NC, Dos Santos SM, Neves KRT, Silveira ER, Viana GSDB. The anti-inflammatory effects of N-methyl-(2S,4R)-trans-4-hydroxy-l-proline from Syderoxylon obtusifolium are related to its inhibition of TNF-alpha and inflammatory enzymes. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2017; 24:14-23. [PMID: 28160854 DOI: 10.1016/j.phymed.2016.11.010] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Revised: 09/10/2016] [Accepted: 11/13/2016] [Indexed: 06/06/2023]
Abstract
BACKGROUND Sideroxylon obtusifolium (Roem. & Schult.) T.D. Penn., Sapotaceae family, is a medicinal species native to the Brazilian Northeastern region. The plant is popularly used as an anti-inflammatory and hypoglycemic. PURPOSE To evaluate the anti-inflammatory properties of the N-methyl-(2S,4R)-trans-4-hydroxy-l-proline (NMP) from S. obtusifolium leaves in models of inflammation and to clarify its action mechanisms. METHODS Male Swiss mice were distributed intocontrols and groups treated with NMP (25, 50 and 100mg/kg, p.o.), indomethacin or morphine (reference drugs). The animals were subjected to the formalin, carrageenan-induced edema and peritonitis tests. Furthermore, peritoneal lavage and slices from edematous paws were used for histological and immunohistochemical (iNOS, TNF-alpha, COX-2 and NF-kB) assays. RESULTS Decreases in licking time, in the 1st and mainly in the 2nd phases of the formalin test, were shown after NMP treatments. In addition, decreases (around 50%) in paw edema were noticed at the 3rd h. The HE staining of paw slices demonstrated a complete reversion of the increased PMN cell numberafter NMP treatment. Similarly, decreases higher than 70% were also demonstrated in PMN cells, in the peritoneal fluid. Furthermore, NMP significantly decreased iNOS, TNF-alpha, COX-2 and NF-kB immunoreactivities. CONCLUSIONS We showed that S. obtusifolium presents a potent anti-inflammatory activity, due to the presence of the N-methyl-(2S,4R)-trans-4-hydroxy-l-proline(NMP) in the plant extract. This action is related to the inhibition by NMP of TNF-alpha and inflammatory enzymes.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Glauce Socorro de Barros Viana
- Faculty of Medicine of the Federal University of Ceará (UFC), Ceará, Brazil; Faculty of Medicine Estácio of Juazeiro do Norte (FMJ), Ceará, Brazil.
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218
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Mancini S, Mariani F, Sena P, Benincasa M, Roncucci L. Myeloperoxidase expression in human colonic mucosa is related to systemic oxidative balance in healthy subjects. Redox Rep 2017; 22:399-407. [PMID: 28064732 DOI: 10.1080/13510002.2016.1277049] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
OBJECTIVES To improve understanding of the preclinical stage of colonic inflammation by exploring the existence of a link between early inflammatory changes in the colonic mucosa and the systemic redox balance. METHODS Clinical characteristics, a fasting blood draw, and mucosal biopsies from the right, left, and sigmoid-rectum colonic tracts collected from 28 healthy individuals (14/14 males/females) who underwent colonoscopy. Myeloperoxidase (MPO) positive cells infiltrating colonic mucosa specimens were assessed by immunohistochemistry, and patients divided into high or low MPO expressing cells/optical field groups (MPOhigh or MPOlow, respectively).The systemic oxidative balance has been studied through derived-Reactive Oxygen Metabolites (d-ROMs), Biological Antioxidant Potential (BAP), and Lipoperoxide-cholesterol Oxidizing (LP-CHOLOX) tests on serum. RESULTS MPOhigh patients demonstrated an increased systemic oxidative stress compared to MPOlow individuals (P = 0.035), especially when MPO is referred to the left-sided colonic mucosa (P = 0.007). MPOlow subjects in the sigmoid-rectum showed a significant higher antioxidant capacity in the serum (P < 0.02). Sex-specific differences in MPO expression (male and female: 4.6 ± 3.2 and 2.6 ± 1.5 MPO-positive cells/optical field, respectively, P = 0.044), and a decreasing gradient in MPO expression moving from the cecum to the rectum (ascendant, descendant, and sigmoid-rectum: 3.7 ± 2.8, 3.1 ± 1.7, and 1.4 ± 0.5, respectively, P = 0.012) were also found and discussed. DISCUSSION The study is the first demonstrating a connection between systemic redox balance and MPO expression in the colonic mucosa, according to the colonic tract and patient gender. Further research evaluating the MPO expression in the human colon and its relationship with pathological conditions could benefit from these results.
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Affiliation(s)
- Stefano Mancini
- a Department of Diagnostics, Clinical, and Public Health Medicine, Section of Human Morphology , University of Modena and Reggio Emilia , Modena , Italy
| | - Francesco Mariani
- a Department of Diagnostics, Clinical, and Public Health Medicine, Section of Human Morphology , University of Modena and Reggio Emilia , Modena , Italy
| | - Paola Sena
- b Department of Biomedical, Metabolic, and Neural Sciences, Section of Human Morphology , University of Modena and Reggio Emilia , Modena , Italy
| | - Marta Benincasa
- b Department of Biomedical, Metabolic, and Neural Sciences, Section of Human Morphology , University of Modena and Reggio Emilia , Modena , Italy
| | - Luca Roncucci
- a Department of Diagnostics, Clinical, and Public Health Medicine, Section of Human Morphology , University of Modena and Reggio Emilia , Modena , Italy
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219
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Ding Y, Tian R, Yang Z, Chen J, Lu N. NADPH oxidase-dependent degradation of single-walled carbon nanotubes in macrophages. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2017; 28:7. [PMID: 27885574 DOI: 10.1007/s10856-016-5817-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2016] [Accepted: 11/17/2016] [Indexed: 06/06/2023]
Abstract
Previous studies have shown that carboxylated single-walled carbon nanotubes (SWCNTs) could be oxidatively biodegraded by neutrophil myeloperoxidase (MPO) and peroxynitrite (ONOO-). However, the biodegradation mechanism of nanotubes in macrophages has not been explored enough. Here, we showed that both MPO and ONOO- could effectively oxidize SWCNTs to generate shorter and oxidative nanotubes in vitro. SWCNTs were significantly degraded in zymosan-stimulated macrophages, and the degradation mechanism was dependent on MPO and ONOO--driven oxidative pathways of activated macrophages, where NADPH oxidase was found to be a major determinant of the biodegradation process. Moreover, the functionalization of IgG to SWCNTs could stimulate MPO release and ONOO- formation in macrophages, thereby creating the conditions favorable for degradation of nanotubes and subsequently contributing to the higher degradation degree of IgG-coated SWCNTs. Therefore, our discovery of NADPH oxidase-dependent SWCNTs degradation in activated macrophages will open new opportunities for the regulation of SWCNTs fate in vivo.
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Affiliation(s)
- Yun Ding
- Key Laboratory of Functional Small Organic Molecule, Ministry of Education; Key Laboratory of Green Chemistry, Jiangxi Province and College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, China
| | - Rong Tian
- Key Laboratory of Functional Small Organic Molecule, Ministry of Education; Key Laboratory of Green Chemistry, Jiangxi Province and College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, China
| | - Zhen Yang
- Department of Physics, University of Houston, Houston, TX, USA
| | - Jianfa Chen
- Department of Physics, University of Houston, Houston, TX, USA
| | - Naihao Lu
- Key Laboratory of Functional Small Organic Molecule, Ministry of Education; Key Laboratory of Green Chemistry, Jiangxi Province and College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, China.
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220
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Colombo G, Clerici M, Altomare A, Rusconi F, Giustarini D, Portinaro N, Garavaglia ML, Rossi R, Dalle-Donne I, Milzani A. Thiol oxidation and di-tyrosine formation in human plasma proteins induced by inflammatory concentrations of hypochlorous acid. J Proteomics 2017; 152:22-32. [DOI: 10.1016/j.jprot.2016.10.008] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Revised: 10/12/2016] [Accepted: 10/19/2016] [Indexed: 02/09/2023]
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221
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Bilello JA, Tennant FS. Patterns of chronic inflammation in extensively treated patients with arachnoiditis and chronic intractable pain. Postgrad Med 2016; 129:87-91. [PMID: 27929717 DOI: 10.1080/00325481.2017.1270155] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
OBJECTIVE To use biomarkers to gain insight into and gauge the residual (post-treatment) level of inflammation in two groups of intensively treated patients with severe chronic pain. METHODS Three study groups were analyzed, and included: (i) patients (n = 90) with chronic intractable pain (CIP), (ii) patients (n = 26) with chronic pain and MRI-documented arachnoiditis (ARC) and (iii) normal subjects without a diagnosis of chronic pain (n = 86). We determined and compared the serum concentrations of Alpha-1 Antitrypsin (A1AT), Myeloperoxidase (MPO) and soluble Tumor Necrosis Factor receptor type 2 (sTNFR2) in each of the patient populations studied. RESULTS Patients treated for ARC or CIP had higher serum levels of A1AT and MPO than normal untreated subjects without a diagnosis of chronic pain. ARC patients had an A1AT mean serum concentration of 167.9 ± 41.9 mg/dL as compared to 148.9 ± 35.2 mg/dL for normal subjects (p = 0.023). CIP patients had the highest mean serum A1AT level 183.6 ± 39.2 mg/dL with p values of <0.0001 or 0.08 when compared to normal subjects or ARC patients respectively. ARC patients had an MPO mean serum concentration of 344.6 ± 227.9 ng/mL as compared to 188.2 ± 107.5 ng/mL for normal subjects (p = < 0.0001). CIP patients had a similar mean serum MPO level of 352.3 ± 164 ng/mL with p values of <0.0001 or 0.85 when compared to normal subjects or ARC patients respectively. In addition, we noted a difference in the pattern of MPO expression in patients with ARC in that 34% had levels of MPO at normal or below and 31% had levels 2-fold or greater than normal. CONCLUSION This data supports the concept that in centralized pain, sites of neuroinflammation elaborate MPO and other inflammatory factors which may not be completely cleared from the system despite extensive and complex treatment regimens.
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Affiliation(s)
- John A Bilello
- a Atlantic Diagnostic Laboratories , Bensalem , PA , USA
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222
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Zhang XY, Elfarra AA. Potential roles of myeloperoxidase and hypochlorous acid in metabolism and toxicity of alkene hydrocarbons and drug molecules containing olefinic moieties. Expert Opin Drug Metab Toxicol 2016; 13:513-524. [DOI: 10.1080/17425255.2017.1271413] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Xin-Yu Zhang
- Institute of Environmental Pollution and Health, School of Environmental and Chemical Engineering, Shanghai University, Shanghai, China
| | - Adnan A. Elfarra
- Department of Comparative Biosciences and the Molecular and Environmental Toxicology Center, University of Wisconsin-Madison, Madison, WI, USA
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Liu LY, Zheng J, Kong C, An J, Yu YX, Zhang XY, Elfarra AA. Characterization of the Major Purine and Pyrimidine Adducts Formed after Incubations of 1-Chloro-3-buten-2-one with Single-/Double-Stranded DNA and Human Cells. Chem Res Toxicol 2016; 30:552-563. [PMID: 27977153 DOI: 10.1021/acs.chemrestox.6b00282] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
We have previously shown that 1-chloro-3-buten-2-one (CBO), a potential reactive metabolite of 1,3-butadiene (BD), exhibits potent cytotoxicity and genotoxicity that have been attributed in part to its reactivity toward DNA. In an effort to identify the DNA adducts of CBO, we characterized the CBO reactions with 2'-deoxyguanosine (dG), 2'-deoxycytidine (dC), and 2'-deoxyadenosine (dA) under in vitro physiological conditions (pH 7.4, 37 °C). In the present study, we investigated the CBO reaction with 2'-deoxythymidine (dT) and compared the rate constants of the reactions of CBO with dA, dC, dG, and dT at both individual- and mixed-nucleosides levels. We also investigated the reactions of CBO with single- and double-stranded DNA using HPLC with UV detection after adducts were released by either acid or enzymatic hydrolysis of DNA. Consistent with the results from the nucleoside reactions and the rate constant experiments, 1,N6-(1-hydroxy-1-chloromethylpropan-1,3-diyl)adenine (A-2D) was identified as the major DNA adduct detected after acid hydrolysis, followed by N7-(4-chloro-3-oxobutyl)guanine (CG-2H) and a small amount of 1,N6-(1-hydroxy-1-hydroxymethylpropan-1,3-diyl)adenine (A-1D). After enzymatic hydrolysis, 1,N6-(1-hydroxy-1-hydroxymethylpropan-1,3-diyl)-2'-dexoyadenosine (dA-1), 3,N4-(1-hydroxy-1-hydroxymethylpropan-1,3-diyl)-2'-deoxycytidine (dC-1/2), and 1,N2-(3-hydroxy-3-hydroxymethylpropan-1,3-diyl)-2'-dexoyguanosine (CG-1) were detected, with dA-1 being the major product, followed by dC-1/2. When a nontoxic concentration of CBO (1 μM) was incubated with HepG2 cells, no adducts could be detected by LC-MS. However, pretreatment of cells with l-buthionine sulfoximine to deplete GSH levels allowed A-2D to be consistently detected in cellular DNA. These results may contribute to a better understanding of the role of the DNA adducts in CBO genotoxicity and mutagenicity. It also suggests that A-2D could be developed as a biomarker of CBO formation after BD exposure in vivo.
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Affiliation(s)
- Ling-Yan Liu
- Institute of Environmental Pollution and Health, School of Environmental and Chemical Engineering, Shanghai University , Shanghai 200444, China
| | - Jin Zheng
- Institute of Environmental Pollution and Health, School of Environmental and Chemical Engineering, Shanghai University , Shanghai 200444, China
| | - Cong Kong
- East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences , Shanghai 200090, China
| | - Jing An
- Institute of Environmental Pollution and Health, School of Environmental and Chemical Engineering, Shanghai University , Shanghai 200444, China
| | - Ying-Xin Yu
- Institute of Environmental Pollution and Health, School of Environmental and Chemical Engineering, Shanghai University , Shanghai 200444, China
| | - Xin-Yu Zhang
- Institute of Environmental Pollution and Health, School of Environmental and Chemical Engineering, Shanghai University , Shanghai 200444, China
| | - Adnan A Elfarra
- Department of Comparative Biosciences and the Molecular and Environmental Toxicology Center, University of Wisconsin-Madison , Madison, Wisconsin 53706, United States
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Easo SL, Mohanan PV. Toxicological evaluation of dextran stabilized iron oxide nanoparticles in human peripheral blood lymphocytes. Biointerphases 2016; 11:04B302. [PMID: 27629807 PMCID: PMC5035300 DOI: 10.1116/1.4962268] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Revised: 08/20/2016] [Accepted: 08/24/2016] [Indexed: 01/15/2023] Open
Abstract
Iron oxide nanoparticles present an attractive choice for carcinogenic cell destruction via hyperthermia treatment due to its small size and magnetic susceptibility. Dextran stabilized iron oxide nanoparticles (DIONPs) synthesized and characterized for this purpose were used to evaluate its effect on cellular uptake, cytotoxicity, and oxidative stress response in human peripheral blood lymphocytes. In the absence of efficient internalization and perceptible apoptosis, DIONPs were still capable of inducing significant levels of reactive oxygen species formation shortly after exposure. Although these particles did not cause any genotoxic effect, they enhanced the expression of a few relevant oxidative stress and antioxidant defense related genes, accompanied by an increase in the glutathione peroxidase activity. These results indicate that under the tested conditions, DIONPs induced only minimal levels of oxidative stress in lymphocytes. Understanding the biological interaction of DIONPs, the consequences as well as the associated mechanisms in vitro, together with information obtained from systemic studies, could be expected to advance the use of these particles for further clinical trials.
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Affiliation(s)
- Sheeja Liza Easo
- Division of Toxicology, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Poojapura, Thiruvananthapuram 695 012, Kerala, India
| | - Parayanthala Valappil Mohanan
- Division of Toxicology, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Poojapura, Thiruvananthapuram 695 012, Kerala, India
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Ilangkovan M, Jantan I, Bukhari SNA. Phyllanthin from Phyllanthus amarus inhibits cellular and humoral immune responses in Balb/C mice. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2016; 23:1441-1450. [PMID: 27765364 DOI: 10.1016/j.phymed.2016.08.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2016] [Revised: 07/28/2016] [Accepted: 08/14/2016] [Indexed: 05/07/2023]
Abstract
BACKGROUND Phyllanthin found in many Phyllanthus species has various biochemical and pharmacological properties especially on its hepatoprotective effects. However, its effect on the immune system has not been well documented. PURPOSE In the present study, phyllanthin isolated from Phyllanthus amarus was investigated for its immunosuppressive effects on various cellular and humoral immune responses in Balb/C mice. METHODS Male mice were treated daily at 20, 40 and 100mg/kg of phyllanthin for 14 days by oral gavage. The effects of phyllanthin on cellular immune responses in treated /non treated mice were determined by measuring CD 11b/CD 18 integrin expression, phagocytosis, nitric oxide (NO) production, myeloperoxidase activity (MPO), T and B cells proliferation, lymphocyte phenotyping, serum cytokines production by activated T-cells and delayed type hypersensitivity (DTH). Its effects on humoral immune responses were evaluated by determining the serum levels of lysozyme and ceruloplasmin, and immunoglobulins (IgG and IgM). RESULTS Phyllanthin dose-dependently inhibited CD11b/CD18 adhesion, the engulfment of E. coli by peritoneal macrophages molecules, NO and MPO release in treated mice. Phyllanthin caused significant and dose-dependent inhibition of T and B lymphocytes proliferation and down-regulation of the Th1 (IL-2 and IFN-γ) and Th2 (IL-4) cytokines. Phyllanthin at 100mg/kg caused a significant reduction in the percentage expression of CD4+ and CD8+ in splenocytes and the inhibition was comparable to that of cyclosporin A at 50mg/kg. At 100mg/kg, phyllanthin also dose-dependently exhibited strong inhibition on the sheep red blood cell (sRBC)-induced swelling rate of mice paw in DTH. Significant inhibition of serum levels of ceruloplasmin and lysozyme were observed in mice fed with higher doses (40 and 100mg/kg) of phyllanthin. Anti-sRBC immunoglobulins (IgM and IgG) antibody titer was down-regulated in immunized and phyllanthin-treated mice in a dose-dependent manner with maximum inhibition being observed at 100mg/kg. CONCLUSION The strong inhibitory effects of phyllanthin on the cellular and humoral immune responses suggest that phyllanthin may be a good candidate for development into an effective immunosuppressive agent.
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Affiliation(s)
- Menaga Ilangkovan
- Drug and Herbal Research Center, Faculty of Pharmacy, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300 Kuala Lumpur, Malaysia
| | - Ibrahim Jantan
- Drug and Herbal Research Center, Faculty of Pharmacy, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300 Kuala Lumpur, Malaysia.
| | - Syed Nasir Abbas Bukhari
- Drug and Herbal Research Center, Faculty of Pharmacy, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300 Kuala Lumpur, Malaysia
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226
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Kaya O, Koca YS, Barut İ, Baspinar S, Sabuncuoglu MZ. L-carnitine reduces acute lung injury in experimental biliary obstruction. Saudi Med J 2016; 36:1046-52. [PMID: 26318460 PMCID: PMC4613627 DOI: 10.15537/smj.2015.9.12206] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
OBJECTIVES To investigate the protective effects of L-carnitine (LC) on lungs in an experimental obstructive jaundice (OJ) model. METHODS This was conducted for 2 months between May 2011 and July 2011 at Suleyman Demirel University School of Medicine Experimental and Clinical Research Center, Isparta, Turkey. Thirty-eight Wistar-Albino rats with an average weight of 250-300 g were divided into 3 groups of control, OJ, and OJ + L-carnitine treatment (LCT). L-carnitine was injected intravenously into the tail vein at a dose of 50 mg/kg/day for 10 days to the LCT group. Animals were sacrificed 10 days later. Enzyme levels were measured in the lung tissue; malondialdehyde, myeloperoxidase (MPO), glutathione peroxidase (GSH-Px), catalase, and superoxide dismutase. Tumor necrosis factor-alfa, interleukin 6 (IL-6), IL-8, and C-reactive protein levels were studied in plasma samples. Histopathological changes in the lungs were examined. RESULTS There was a decreased in GSH-Px, MPO, and IL-8 levels (p less than 0.05) in the LCT group. The histopathological examination showed that neutrophil leukocyte infiltration and edema formation decreased and destruction of lung parenchyma disappeared following the treatment with LC (p less than 0.05). CONCLUSION L-carnitine has a protective effect against lung damage due to experimental obstructive jaundice, possibly by altering anticytokine and antioxidant activity, and by decreasing the neutrophil migration.
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Affiliation(s)
- Ozgur Kaya
- Department of General Surgery, Medical Doctor of Yenimahalle State Hospital, Ankara, Turkey. E-mail.
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227
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Novel bis-arylalkylamines as myeloperoxidase inhibitors: Design, synthesis, and structure-activity relationship study. Eur J Med Chem 2016; 123:746-762. [DOI: 10.1016/j.ejmech.2016.07.053] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Revised: 07/05/2016] [Accepted: 07/22/2016] [Indexed: 01/15/2023]
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228
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Binding of human IgG to single-walled carbon nanotubes accelerated myeloperoxidase-mediated degradation in activated neutrophils. Biophys Chem 2016; 218:36-41. [DOI: 10.1016/j.bpc.2016.09.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Revised: 09/01/2016] [Accepted: 09/01/2016] [Indexed: 12/25/2022]
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229
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Mahasneh AA, Zhang Y, Zhao H, Ambrosone CB, Hong CC. Lifestyle predictors of oxidant and antioxidant enzyme activities and total antioxidant capacity in healthy women: a cross-sectional study. J Physiol Biochem 2016; 72:745-762. [DOI: 10.1007/s13105-016-0513-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2015] [Accepted: 08/02/2016] [Indexed: 01/01/2023]
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230
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Therapeutic Strategies for Oxidative Stress-Related Cardiovascular Diseases: Removal of Excess Reactive Oxygen Species in Adult Stem Cells. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2016; 2016:2483163. [PMID: 27668035 PMCID: PMC5030421 DOI: 10.1155/2016/2483163] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Accepted: 08/17/2016] [Indexed: 02/07/2023]
Abstract
Accumulating evidence indicates that acute and chronic uncontrolled overproduction of oxidative stress-related factors including reactive oxygen species (ROS) causes cardiovascular diseases (CVDs), atherosclerosis, and diabetes. Moreover ROS mediate various signaling pathways underlying vascular inflammation in ischemic tissues. With respect to stem cell-based therapy, several studies clearly indicate that modulating antioxidant production at cellular levels enhances stem/progenitor cell functionalities, including proliferation, long-term survival in ischemic tissues, and complete differentiation of transplanted cells into mature vascular cells. Recently emerging therapeutic strategies involving adult stem cells, including endothelial progenitor cells (EPCs), for treating ischemic CVDs have highlighted the need to control intracellular ROS production, because it critically affects the replicative senescence of ex vivo expanded therapeutic cells. Better understanding of the complexity of cellular ROS in stem cell biology might improve cell survival in ischemic tissues and enhance the regenerative potentials of transplanted stem/progenitor cells. In this review, we will discuss the nature and sources of ROS, drug-based therapeutic strategies for scavenging ROS, and EPC based therapeutic strategies for treating oxidative stress-related CVDs. Furthermore, we will discuss whether primed EPCs pretreated with natural ROS-scavenging compounds are crucial and promising therapeutic strategies for vascular repair.
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231
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ANCA-associated vasculitis - clinical utility of using ANCA specificity to classify patients. Nat Rev Rheumatol 2016; 12:570-9. [PMID: 27464484 DOI: 10.1038/nrrheum.2016.123] [Citation(s) in RCA: 175] [Impact Index Per Article: 21.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The anti-neutrophil cytoplasmic antibody (ANCA)-associated vasculitides (AAV) are a heterogeneous group of rare syndromes characterized by necrotizing inflammation of small and medium-sized blood vessels and the presence of ANCAs. Several clinicopathological classification systems exist that aim to define homogeneous groups among patients with AAV, the main syndromes being microscopic polyangiitis (MPA), granulomatosis with polyangiitis (GPA) and eosinophilic GPA (EGPA). Two main types of ANCA can be detected in patients with AAV. These ANCAs are defined according to their autoantigen target, namely leukocyte proteinase 3 (PR3) and myeloperoxidase (MPO). Patients with GPA are predominantly PR3-ANCA-positive, whereas those with MPA are predominantly MPO-ANCA-positive, although ANCA specificity overlaps only partially with these clinical syndromes. Accumulating evidence suggests that ANCA specificity could be better than clinical diagnosis for defining homogeneous groups of patients, as PR3-ANCA and MPO-ANCA are associated with different genetic backgrounds and epidemiology. ANCA specificity affects the phenotype of clinical disease, as well as the patient's initial response to remission-inducing therapy, relapse risk and long-term prognosis. Thus, the classification of AAV by ANCA specificity rather than by clinical diagnosis could convey clinically useful information at the time of diagnosis.
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232
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Grigorieva DV, Gorudko IV, Kostevich VA, Sokolov AV, Buko IV, Vasilyev VB, Polonetsky LZ, Panasenko OM, Cherenkevich SN. [Myeloperoxidase activity in blood plasma as a criterion of therapy for patients with cardiovascular disease]. BIOMEDIT︠S︡INSKAI︠A︡ KHIMII︠A︡ 2016; 62:318-24. [PMID: 27420626 DOI: 10.18097/pbmc20166203318] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A significant increase in the myeloperoxidase (MPO) activity has been found in plasma of patients with stable angina and with acute coronary syndrome (ACS) in comparison with the control group. MPO concentration was significantly increased in plasma of ACS patients. Reduced MPO activity in the treated ACS patients correlated with a favorable outcome of the disease. Generally, changes in plasma MPO concentration coincided with changes in lactoferrin concentration thus confirming the role of neutrophil degranulation in the increase of plasma concentrations of these proteins. The increase in MPO activity was obviously determined by modification of the MPO protein caused by reactive oxygen species and halogen in the molar ratio of 1 : 25 and 1 : 50. The decrease in plasma MPO activity may be associated with increased plasma concentrations of the physiological inhibitor of its activity, ceruloplasmin, and also with modification of the MPO protein with reactive oxygen species and halogen at their molar ratio of 1 : 100 and higher. Thus, MPO activity may be used for evaluation of effectiveness of the treatment of cardiovascular diseases.
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Affiliation(s)
| | | | - V A Kostevich
- Institute for Experimental Medicine, Saint-Petersburg, Russia; Research Institute of Physical-Chemical Medicine, Moscow, Russia
| | - A V Sokolov
- Institute for Experimental Medicine, Saint-Petersburg, Russia; Research Institute of Physical-Chemical Medicine, Moscow, Russia
| | - I V Buko
- Scientific practical centre of hygiene republican unitary enterprise, Minsk, Belarus
| | - V B Vasilyev
- Institute for Experimental Medicine, Saint-Petersburg, Russia
| | - L Z Polonetsky
- Republican Science-Practical Center of Cardiology, Minsk, Belarus
| | - O M Panasenko
- Research Institute of Physical-Chemical Medicine, Moscow, Russia
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233
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Di Meo S, Reed TT, Venditti P, Victor VM. Role of ROS and RNS Sources in Physiological and Pathological Conditions. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2016; 2016:1245049. [PMID: 27478531 PMCID: PMC4960346 DOI: 10.1155/2016/1245049] [Citation(s) in RCA: 756] [Impact Index Per Article: 94.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Revised: 05/04/2016] [Accepted: 05/23/2016] [Indexed: 12/19/2022]
Abstract
There is significant evidence that, in living systems, free radicals and other reactive oxygen and nitrogen species play a double role, because they can cause oxidative damage and tissue dysfunction and serve as molecular signals activating stress responses that are beneficial to the organism. Mitochondria have been thought to both play a major role in tissue oxidative damage and dysfunction and provide protection against excessive tissue dysfunction through several mechanisms, including stimulation of opening of permeability transition pores. Until recently, the functional significance of ROS sources different from mitochondria has received lesser attention. However, the most recent data, besides confirming the mitochondrial role in tissue oxidative stress and protection, show interplay between mitochondria and other ROS cellular sources, so that activation of one can lead to activation of other sources. Thus, it is currently accepted that in various conditions all cellular sources of ROS provide significant contribution to processes that oxidatively damage tissues and assure their survival, through mechanisms such as autophagy and apoptosis.
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Affiliation(s)
- Sergio Di Meo
- Dipartimento di Biologia, Università di Napoli “Federico II”, 80126 Napoli, Italy
| | - Tanea T. Reed
- Department of Chemistry, Eastern Kentucky University, Richmond, KY 40475, USA
| | - Paola Venditti
- Dipartimento di Biologia, Università di Napoli “Federico II”, 80126 Napoli, Italy
| | - Victor Manuel Victor
- Service of Endocrinology, University Hospital Dr. Peset, Foundation for the Promotion of Health and Biomedical Research in the Valencian Region (FISABIO), 46010 Valencia, Spain
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234
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Pósa A, Szabó R, Szalai Z, Kupai K, Deim Z, Murlasits Z, Bencsik O, Szekeres A, Vágvölgyi C, Balogh L, Juhász B, Szilvássy Z, Varga C. The effect of acute ophiobolin A treatment on HO-mediated inflammatory processes. Hum Exp Toxicol 2016; 36:594-602. [PMID: 27402683 DOI: 10.1177/0960327116658107] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Many microbial and plant-derived metabolites contribute to the production of inflammatory mediators and the expression of pro-inflammatory molecules. Ophiobolin A (OPA) is a fungal secondary metabolite produced by Bipolaris species. The aim of our study was to examine the acute effects of this compound on inflammatory processes. Male Wistar rats were treated with 5% ethanol, 0.01 mg/kg OPA, 0.1 mg/kg OPA and 1.0 mg/kg OPA per os. After 24 h of the administrations, inflammatory mediators such as interleukin-6 (IL-6), tumour necrosis factor-alpha (TNF-α) and myeloperoxidase (MPO) enzyme as well as heme oxygenase (HO) activity were measured in both plasma and cardiac tissue, along with serum alanine aminotransferase (ALT) and aspartate aminotransferase (AST). We found that OPA caused a significant elevation in the concentrations of IL-6 and TNF-α, increased MPO activity and decreased HO enzyme activity in the plasma. While OPA induces inflammation in the plasma, it did not change the level of inflammatory mediators in the cardiac tissue and the concentrations of serum ALT and AST. Our findings indicate that rapid release of inflammatory mediators by OPA promotes systemic inflammation. However, this acute OPA treatment does not show toxic effects on the cardiac tissue and the concentrations of liver enzymes.
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Affiliation(s)
- Anikó Pósa
- 1 Department of Physiology, Anatomy and Neuroscience, Faculty of Science and Informatics, University of Szeged, Szeged, Hungary
| | - Renáta Szabó
- 1 Department of Physiology, Anatomy and Neuroscience, Faculty of Science and Informatics, University of Szeged, Szeged, Hungary
| | - Zita Szalai
- 1 Department of Physiology, Anatomy and Neuroscience, Faculty of Science and Informatics, University of Szeged, Szeged, Hungary
| | - Krisztina Kupai
- 1 Department of Physiology, Anatomy and Neuroscience, Faculty of Science and Informatics, University of Szeged, Szeged, Hungary
| | - Zoltán Deim
- 1 Department of Physiology, Anatomy and Neuroscience, Faculty of Science and Informatics, University of Szeged, Szeged, Hungary
| | | | - Ottó Bencsik
- 3 Department of Microbiology, Faculty of Science and Informatics, University of Szeged, Szeged, Hungary
| | - András Szekeres
- 3 Department of Microbiology, Faculty of Science and Informatics, University of Szeged, Szeged, Hungary
| | - Csaba Vágvölgyi
- 3 Department of Microbiology, Faculty of Science and Informatics, University of Szeged, Szeged, Hungary
| | - László Balogh
- 4 Institute of Physical Education and Sport Science, Juhász Gyula Faculty of Education, University of Szeged, Szeged, Hungary
| | - Béla Juhász
- 5 Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Zoltán Szilvássy
- 5 Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Csaba Varga
- 1 Department of Physiology, Anatomy and Neuroscience, Faculty of Science and Informatics, University of Szeged, Szeged, Hungary
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235
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Yu G, Liang Y, Huang Z, Jones DW, Pritchard KA, Zhang H. Inhibition of myeloperoxidase oxidant production by N-acetyl lysyltyrosylcysteine amide reduces brain damage in a murine model of stroke. J Neuroinflammation 2016; 13:119. [PMID: 27220420 PMCID: PMC4879722 DOI: 10.1186/s12974-016-0583-x] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Accepted: 05/13/2016] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Oxidative stress plays an important and causal role in the mechanisms by which ischemia/reperfusion (I/R) injury increases brain damage after stroke. Accordingly, reducing oxidative stress has been proposed as a therapeutic strategy for limiting damage in the brain after stroke. Myeloperoxidase (MPO) is a highly potent oxidative enzyme that is capable of inducing both oxidative and nitrosative stress in vivo. METHODS To determine if and the extent to which MPO-generated oxidants contribute to brain I/R injury, we treated mice subjected to middle cerebral artery occlusion (MCAO) with N-acetyl lysyltyrosylcysteine amide (KYC), a novel, specific and non-toxic inhibitor of MPO. Behavioral testing, ischemic damage, blood-brain-barrier disruption, apoptosis, neutrophils infiltration, microglia/macrophage activation, and MPO oxidation were analyzed within a 7-day period after MCAO. RESULTS Our studies show that KYC treatment significantly reduces neurological severity scores, infarct size, IgG extravasation, neutrophil infiltration, loss of neurons, apoptosis, and microglia/macrophage activation in the brains of MCAO mice. Immunofluorescence studies show that KYC treatment reduces the formation of chlorotyrosine (ClTyr), a fingerprint biomarker of MPO oxidation, nitrotyrosine (NO2Tyr), and 4-hydroxynonenal (4HNE) in MCAO mice. All oxidative products colocalized with MPO in the infarcted brains, suggesting that MPO-generated oxidants are involved in forming the oxidative products. CONCLUSIONS MPO-generated oxidants play detrimental roles in causing brain damage after stroke which is effectively reduced by KYC.
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Affiliation(s)
- Guoliang Yu
- Division of Pediatric Surgery, Department of Surgery, Medical College of Wisconsin, 8701 Watertown Plank Rd., Milwaukee, WI, 53226, USA
| | - Ye Liang
- Division of Pediatric Surgery, Department of Surgery, Medical College of Wisconsin, 8701 Watertown Plank Rd., Milwaukee, WI, 53226, USA
| | - Ziming Huang
- Division of Pediatric Surgery, Department of Surgery, Medical College of Wisconsin, 8701 Watertown Plank Rd., Milwaukee, WI, 53226, USA.,Department of Breast Surgery, Maternal and Child Health Hospital of Hubei Province, 745 WuLuo Road, Hongshan District, Wuhan City, Hubei Province, 430070, China
| | - Deron W Jones
- Division of Pediatric Surgery, Department of Surgery, Medical College of Wisconsin, 8701 Watertown Plank Rd., Milwaukee, WI, 53226, USA
| | - Kirkwood A Pritchard
- Division of Pediatric Surgery, Department of Surgery, Medical College of Wisconsin, 8701 Watertown Plank Rd., Milwaukee, WI, 53226, USA
| | - Hao Zhang
- Division of Pediatric Surgery, Department of Surgery, Medical College of Wisconsin, 8701 Watertown Plank Rd., Milwaukee, WI, 53226, USA.
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236
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Lu N, Ding Y, Tian R, Peng YY. Inhibition of myeloperoxidase-mediated oxidative damage by nitrite in SH-SY5Y cells: Relevance to neuroprotection in neurodegenerative diseases. Eur J Pharmacol 2016; 780:142-7. [PMID: 27020551 DOI: 10.1016/j.ejphar.2016.03.042] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2015] [Revised: 03/14/2016] [Accepted: 03/23/2016] [Indexed: 01/15/2023]
Abstract
Myeloperoxidase (MPO) and MPO-catalyzed hypochlorous acid (HOCl) is elevated in many neurodegenerative diseases, and lead to severe tissue injuries. Nitrite (NO2(-)) is a widespread inorganic molecule that has recently been proposed as a direct NO donor to exert antioxidant properties in vivo and vitro. Since NO2(-) and MPO (and/or HOCl) were important mediators in brain function and disease, we investigated the effects of NO2(-) on MPO-mediated damage to human neuroblastoma SH-SY5Y cells. Here, we showed that exposure of SH-SY5Y cells to MPO (or HOCl) resulted in a significant loss in viability, ATP and glutathione levels, and treatment of neuronal cells with NO2(-) substantially attenuated MPO (or HOCl)-dependent cellular toxicity. The protective effects of NO2(-) on MPO (or HOCl)-induced cytotoxicity were because that (1) NO2(-) at high concentrations competed effectively with Cl(-) for MPO, thus limiting OCl(-) production by the enzyme; (2) HOCl was removed by reacting with NO2(-), forming less damaging compound; (3) NO2(-) significantly inhibited MPO-mediated inactivation of brain protein (enolase) and protein oxidation. Therefore, NO2(-) could show novel protective effects in some neurodegenerative diseases by preventing MPO-mediated oxidative damage.
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Affiliation(s)
- Naihao Lu
- Key Laboratory of Functional Small Organic Molecule, Ministry of Education; Key Laboratory of Green Chemistry, Jiangxi Province and College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, China.
| | - Yun Ding
- Key Laboratory of Functional Small Organic Molecule, Ministry of Education; Key Laboratory of Green Chemistry, Jiangxi Province and College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, China
| | - Rong Tian
- Key Laboratory of Functional Small Organic Molecule, Ministry of Education; Key Laboratory of Green Chemistry, Jiangxi Province and College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, China
| | - Yi-Yuan Peng
- Key Laboratory of Functional Small Organic Molecule, Ministry of Education; Key Laboratory of Green Chemistry, Jiangxi Province and College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, China.
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237
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Kumbasar S, Salman S, Al RA, Ozturk C, Yarali O, Alp HH, Altuner D, Suleyman B. The effect of metamizole on ischemia/reperfusion injury in the rat ovary: An analysis of biochemistry, molecular gene expression, and histopathology. Indian J Pharmacol 2016; 48:32-6. [PMID: 26997719 PMCID: PMC4778203 DOI: 10.4103/0253-7613.174515] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Objectives: In this study, we investigated the effect of metamizole on ischemia/reperfusion (I/R) injury an analysis of biochemistry, molecular gene expression, and histopathology in the rat ovary of female albino Wistar rats. Materials and Methods: Animals were divided into four groups; control group with induced ischemia-reperfusion (IRC), ischemia-reperfusion +100 mg/kg metamizole sodium (MS) (IRM-100), ischemia-reperfusion +200 mg/kg MS (IRM-200), and healthy group applied sham operation (SG). Results: Myeloperoxidase (MPO) activity and gene expression increased significantly in IRC and IRM-100 group rat ovarian tissue compared with the SG group (P < 0.0001). However, MPO activity and gene expression in IRM-200 group ovarian tissue decreased significantly compared with the IRC and IRM-100 groups (P < 0.0001). Histopathologically, pronounced congestion, dilated vessels, hemorrhage, edema, degenerative cells, and neutrophil migration and adhesion to the endothelium were observed in the IRC and IRM-100 group ovarian tissues. A small number of congested dilated vessels, mild congestion, and edema were observed in the IRM-200 group, but no neutrophil migration and adhesion to the endothelium or degenerative cells. Conclusions: At 200 mg/kg dose metamizole prevented ovarian injury induced with I/R. This data show that metamizole can be used in the ovarian I/R injury treatment.
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Affiliation(s)
- Serkan Kumbasar
- Department of Obstetrics and Gynecology, School of Medicine, Sakarya University, Sakarya, Turkey
| | - Suleyman Salman
- Department of Obstetrics and Gynecology, Gaziosmanpasa Taksim Education and Research Hospital, Istanbul, Turkey
| | - Ragip Atakan Al
- Department of Obstetrics and Gynecology, Faculty of Medicine, Ataturk University, Erzurum, Turkey
| | - Cengiz Ozturk
- Department of Anatomy, Erzurum Region Education and Research Hospital, Erzurum, Turkey
| | - Oguzhan Yarali
- Department of Medical Genetics, İstanbul Medeniyet University Goztepe Training and Research Hospital, Istanbul, Turkey
| | - Hamit Hakan Alp
- Department of Biochemistry, Faculty of Medicine, 100. Yil University, Van, Turkey
| | - Durdu Altuner
- Department of Pharmacology, Faculty of Medicine, Erzincan University, Erzincan, Turkey
| | - Bahadir Suleyman
- Department of Pharmacology, Faculty of Medicine, Erzincan University, Erzincan, Turkey
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Aguado BA, Caffe JR, Nanavati D, Rao SS, Bushnell GG, Azarin SM, Shea LD. Extracellular matrix mediators of metastatic cell colonization characterized using scaffold mimics of the pre-metastatic niche. Acta Biomater 2016; 33:13-24. [PMID: 26844426 DOI: 10.1016/j.actbio.2016.01.043] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2015] [Revised: 12/22/2015] [Accepted: 01/30/2016] [Indexed: 12/12/2022]
Abstract
Metastatic tumor cells colonize the pre-metastatic niche, which is a complex microenvironment consisting partially of extracellular matrix (ECM) proteins. We sought to identify and validate novel contributors to tumor cell colonization using ECM-coated poly(ε-caprolactone) (PCL) scaffolds as mimics of the pre-metastatic niche. Utilizing orthotopic breast cancer mouse models, fibronectin and collagen IV-coated scaffolds implanted in the subcutaneous space captured colonizing tumor cells, showing a greater than 2-fold increase in tumor cell accumulation at the implant site compared to uncoated scaffolds. As a strategy to identify additional ECM colonization contributors, decellularized matrix (DCM) from lungs and livers containing metastatic tumors were characterized. In vitro, metastatic cell adhesion was increased on DCM coatings from diseased organs relative to healthy DCM. Furthermore, in vivo implantations of diseased DCM-coated scaffolds had increased tumor cell colonization relative to healthy DCM coatings. Mass-spectrometry proteomics was performed on healthy and diseased DCM to identify candidates associated with colonization. Myeloperoxidase was identified as abundantly present in diseased organs and validated as a contributor to colonization using myeloperoxidase-coated scaffold implants. This work identified novel ECM proteins associated with colonization using decellularization and proteomics techniques and validated candidates using a scaffold to mimic the pre-metastatic niche. STATEMENT OF SIGNIFICANCE The pre-metastatic niche consists partially of ECM proteins that promote metastatic cell colonization to a target organ. We present a biomaterials-based approach to mimic this niche and identify ECM mediators of colonization. Using murine breast cancer models, we implanted microporous PCL scaffolds to recruit colonizing tumor cells in vivo. As a strategy to modulate colonization, we coated scaffolds with various ECM proteins, including decellularized lung and liver matrix from tumor-bearing mice. After characterizing the organ matrices using proteomics, myeloperoxidase was identified as an ECM protein contributing to colonization and validated using our scaffold. Our scaffold provides a platform to identify novel contributors to colonization and allows for the capture of colonizing tumor cells for a variety of downstream clinical applications.
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Affiliation(s)
- Brian A Aguado
- Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208, USA; Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL 60611, USA
| | - Jordan R Caffe
- Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208, USA; Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL 60611, USA
| | - Dhaval Nanavati
- Proteomics Core Facility, Northwestern University, Chicago, IL 60611, USA
| | - Shreyas S Rao
- Department of Chemical and Biological Engineering, University of Alabama, Tuscaloosa, AL 35487, USA
| | - Grace G Bushnell
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48105, USA
| | - Samira M Azarin
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, MN 55455, USA
| | - Lonnie D Shea
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48105, USA; Department of Chemical Engineering, University of Michigan, Ann Arbor, MI 48105, USA; Department of Chemical and Biological Engineering, Northwestern University, Evanston, IL 60208, USA.
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239
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Ren X, Ding Y, Lu N. Nitrite attenuated peroxynitrite and hypochlorite generation in activated neutrophils. Eur J Pharmacol 2016; 775:50-6. [DOI: 10.1016/j.ejphar.2016.02.020] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Revised: 02/01/2016] [Accepted: 02/04/2016] [Indexed: 01/15/2023]
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240
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DeNichilo MO, Shoubridge AJ, Panagopoulos V, Liapis V, Zysk A, Zinonos I, Hay S, Atkins GJ, Findlay DM, Evdokiou A. Peroxidase Enzymes Regulate Collagen Biosynthesis and Matrix Mineralization by Cultured Human Osteoblasts. Calcif Tissue Int 2016; 98:294-305. [PMID: 26643175 DOI: 10.1007/s00223-015-0090-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Accepted: 11/20/2015] [Indexed: 01/15/2023]
Abstract
The early recruitment of inflammatory cells to sites of bone fracture and trauma is a critical determinant in successful fracture healing. Released by infiltrating inflammatory cells, myeloperoxidase (MPO) and eosinophil peroxidase (EPO) are heme-containing enzymes, whose functional involvement in bone repair has mainly been studied in the context of providing a mechanism for oxidative defense against invading microorganisms. We report here novel findings that show peroxidase enzymes have the capacity to stimulate osteoblastic cells to secrete collagen I protein and generate a mineralized extracellular matrix in vitro. Mechanistic studies conducted using cultured osteoblasts show that peroxidase enzymes stimulate collagen biosynthesis at a post-translational level in a prolyl hydroxylase-dependent manner, which does not require ascorbic acid. Our studies demonstrate that osteoblasts rapidly bind and internalize both MPO and EPO, and the catalytic activity of these peroxidase enzymes is essential to support collagen I biosynthesis and subsequent release of collagen by osteoblasts. We show that EPO is capable of regulating osteogenic gene expression and matrix mineralization in culture, suggesting that peroxidase enzymes may play an important role not only in normal bone repair, but also in the progression of pathological states where infiltrating inflammatory cells are known to deposit peroxidases.
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Affiliation(s)
- Mark O DeNichilo
- Breast Cancer Research Unit, Discipline of Surgery, The University of Adelaide, Adelaide, Australia.
- TQEH, Basil Hetzel Research Institute, 28 Woodville Road, Woodville, SA, 5011, Australia.
| | - Alexandra J Shoubridge
- Breast Cancer Research Unit, Discipline of Surgery, The University of Adelaide, Adelaide, Australia
| | - Vasilios Panagopoulos
- Breast Cancer Research Unit, Discipline of Surgery, The University of Adelaide, Adelaide, Australia
| | - Vasilios Liapis
- Breast Cancer Research Unit, Discipline of Surgery, The University of Adelaide, Adelaide, Australia
| | - Aneta Zysk
- Breast Cancer Research Unit, Discipline of Surgery, The University of Adelaide, Adelaide, Australia
| | - Irene Zinonos
- Breast Cancer Research Unit, Discipline of Surgery, The University of Adelaide, Adelaide, Australia
| | - Shelley Hay
- Breast Cancer Research Unit, Discipline of Surgery, The University of Adelaide, Adelaide, Australia
| | - Gerald J Atkins
- Discipline of Orthopaedics and Trauma, The University of Adelaide, Adelaide, Australia
| | - David M Findlay
- Discipline of Orthopaedics and Trauma, The University of Adelaide, Adelaide, Australia
| | - Andreas Evdokiou
- Breast Cancer Research Unit, Discipline of Surgery, The University of Adelaide, Adelaide, Australia
- Centre for Personalized Cancer Medicine, The University of Adelaide, Adelaide, Australia
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241
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Lung extracellular matrix and redox regulation. Redox Biol 2016; 8:305-15. [PMID: 26938939 PMCID: PMC4777985 DOI: 10.1016/j.redox.2016.02.005] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2015] [Revised: 02/15/2016] [Accepted: 02/17/2016] [Indexed: 12/28/2022] Open
Abstract
Pulmonary fibrosis affects millions worldwide and, even though there has been a significant investment in understanding the processes involved in wound healing and maladaptive repair, a complete understanding of the mechanisms responsible for lung fibrogenesis eludes us, and interventions capable of reversing or halting disease progression are not available. Pulmonary fibrosis is characterized by the excessive expression and uncontrolled deposition of extracellular matrix (ECM) proteins resulting in erosion of the tissue structure. Initially considered an 'end-stage' process elicited after injury, these events are now considered pathogenic and are believed to contribute to the course of the disease. By interacting with integrins capable of signal transduction and by influencing tissue mechanics, ECM proteins modulate processes ranging from cell adhesion and migration to differentiation and growth factor expression. In doing so, ECM proteins help orchestrate complex developmental processes and maintain tissue homeostasis. However, poorly controlled deposition of ECM proteins promotes inflammation, fibroproliferation, and aberrant differentiation of cells, and has been implicated in the pathogenesis of pulmonary fibrosis, atherosclerosis and cancer. Considering their vital functions, ECM proteins are the target of investigation, and oxidation-reduction (redox) reactions have emerged as important regulators of the ECM. Oxidative stress invariably accompanies lung disease and promotes ECM expression directly or through the overproduction of pro-fibrotic growth factors, while affecting integrin binding and activation. In vitro and in vivo investigations point to redox reactions as targets for intervention in pulmonary fibrosis and related disorders, but studies in humans have been disappointing probably due to the narrow impact of the interventions tested, and our poor understanding of the factors that regulate these complex reactions. This review is not meant to provide a comprehensive review of this field, but rather to highlight what has been learned and to raise interest in this area in need of much attention.
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242
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Neutrophil-Mediated Regulation of Innate and Adaptive Immunity: The Role of Myeloperoxidase. J Immunol Res 2016; 2016:2349817. [PMID: 26904693 PMCID: PMC4745373 DOI: 10.1155/2016/2349817] [Citation(s) in RCA: 126] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2015] [Accepted: 12/21/2015] [Indexed: 01/15/2023] Open
Abstract
Neutrophils are no longer seen as leukocytes with a sole function of being the essential first responders in the removal of pathogens at sites of infection. Being armed with numerous pro- and anti-inflammatory mediators, these phagocytes can also contribute to the development of various autoimmune diseases and can positively or negatively regulate the generation of adaptive immune responses. In this review, we will discuss how myeloperoxidase, the most abundant neutrophil granule protein, plays a key role in the various functions of neutrophils in innate and adaptive immunity.
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243
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Bai MJ, Feng J, Yu F, Yan CL, Cui CJ, Huang L, Feng ZR. Serum Myeloperoxidase Level in Systemic Lupus Erythematosus. ACTA ACUST UNITED AC 2016; 30:199-202. [PMID: 26564422 DOI: 10.1016/s1001-9294(15)30048-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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244
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Cook NL, Moeke CH, Fantoni LI, Pattison DI, Davies MJ. The myeloperoxidase-derived oxidant hypothiocyanous acid inhibits protein tyrosine phosphatases via oxidation of key cysteine residues. Free Radic Biol Med 2016; 90:195-205. [PMID: 26616646 DOI: 10.1016/j.freeradbiomed.2015.11.025] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2015] [Revised: 11/13/2015] [Accepted: 11/20/2015] [Indexed: 12/31/2022]
Abstract
Phosphorylation of protein tyrosine residues is critical to cellular processes, and is regulated by kinases and phosphatases (PTPs). PTPs contain a redox-sensitive active site Cys residue, which is readily oxidized. Myeloperoxidase, released from activated leukocytes, catalyzes thiocyanate ion (SCN(-)) oxidation by H2O2 to form hypothiocyanous acid (HOSCN), an oxidant that targets Cys residues. Dysregulated phosphorylation and elevated MPO levels have been associated with chronic inflammatory diseases where HOSCN can be generated. Previous studies have shown that HOSCN inhibits isolated PTP1B and induces cellular dysfunction in cultured macrophage-like cells. The present study extends this previous work and shows that physiologically-relevant concentrations of HOSCN alter the activity and structure of other members of the wider PTP family (including leukocyte antigen-related PTP, PTP-LAR; T-cell PTP, TC-PTP; CD45 and Src homology phosphatase-1, Shp-1) by targeting Cys residues. Isolated PTP activity, and activity in lysates of human monocyte-derived macrophages (HMDM) was inhibited by 0-100 µM HOSCN with this being accompanied by reversible oxidation of Cys residues, formation of sulfenic acids or sulfenyl-thiocyanates (detected by Western blotting, and LC-MS as dimedone adducts), and structural changes. LC-MS/MS peptide mass-mapping has provided data on the modified Cys residues in PTP-LAR. This study indicates that inflammation-induced oxidants, and particularly myeloperoxidase-derived species, can modulate the activity of multiple members of the PTP superfamily via oxidation of Cys residues to sulfenic acids. This alteration of the balance of PTP/kinase activity may perturb protein phosphorylation and disrupt cell signaling with subsequent induction of apoptosis at sites of inflammation.
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Affiliation(s)
- Naomi L Cook
- The Heart Research Institute, Newtown, Sydney, NSW 2042, Australia
| | - Cassidy H Moeke
- The Heart Research Institute, Newtown, Sydney, NSW 2042, Australia; Sydney Medical School, University of Sydney, Sydney, NSW 2006, Australia
| | - Luca I Fantoni
- The Heart Research Institute, Newtown, Sydney, NSW 2042, Australia
| | - David I Pattison
- The Heart Research Institute, Newtown, Sydney, NSW 2042, Australia; Sydney Medical School, University of Sydney, Sydney, NSW 2006, Australia
| | - Michael J Davies
- The Heart Research Institute, Newtown, Sydney, NSW 2042, Australia; Sydney Medical School, University of Sydney, Sydney, NSW 2006, Australia; Department of Biomedical Sciences, Panum Institute, University of Copenhagen, Building 4.5, Blegdamsvej 3, DK-2200 Copenhagen, Denmark.
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245
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Crugeiras J, Ríos A. Halogen transfer through halogen bonds in halogen-bound ammonia homodimers. Phys Chem Chem Phys 2016; 18:30961-30971. [DOI: 10.1039/c6cp06182f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Halogen bond complexes as intermediates in halogen transfer reactions between N-haloamines and ammonia.
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Affiliation(s)
- Juan Crugeiras
- Departamento de Química Física
- Facultad de Química
- Universidad de Santiago de Compostela
- Spain
| | - Ana Ríos
- Departamento de Química Física
- Facultad de Química
- Universidad de Santiago de Compostela
- Spain
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246
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Correia-Costa L, Sousa T, Morato M, Cosme D, Afonso J, Moura C, Mota C, Areias JC, Guerra A, Schaefer F, Caldas Afonso A, Barros H, Albino-Teixeira A, Azevedo A. Association of myeloperoxidase levels with cardiometabolic factors and renal function in prepubertal children. Eur J Clin Invest 2016; 46:50-9. [PMID: 26541603 DOI: 10.1111/eci.12564] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Accepted: 11/01/2015] [Indexed: 12/23/2022]
Abstract
INTRODUCTION Myeloperoxidase (MPO), an enzyme linking obesity and cardiovascular (CV) risk in adults, has rarely been studied in young children and no studies assessed its association with renal function. We sought to explore a possible association between serum MPO levels, obesity, CV risk factors and renal function in prepubertal children. MATERIALS/METHODS Cross-sectional evaluation of 309 children aged 8-9 years (161 normal weight, 148 overweight/obese), members of the birth cohort Generation I (Portugal). Anthropometrics (body mass index (BMI), waist-to-height ratio (WHtR) and % body fat mass (%BFM) by bioelectrical impedance analysis), 24-h ambulatory blood pressure monitoring and pulse wave velocity (PWV) were measured. Insulin resistance was estimated by the HOMA index (considering serum fasting glucose and insulin determinations). Serum MPO levels were assessed by immunoenzymatic assay. RESULTS MPO levels were positively associated with obesity indices (BMI z-score, WHtR and %BFM). Higher MPO levels were associated with higher 24-h and night-time mean arterial pressure, with nondipping and with higher values of insulin resistance. In normal weight children, the endothelial function, as evaluated indirectly by PWV, was an independent predictor of MPO levels. In overweight/obese children, estimated glomerular filtration rate increased significantly across tertiles of MPO (Ptrend = 0·031) and this association held after adjustment for age, sex, neutrophil and monocyte counts and CV risk factors. CONCLUSIONS Our results reinforce the role of MPO as a risk marker in obesity and related CV morbidities in young children. MPO levels associate with the dipping pattern and PWV and, among overweight/obese children, an association exists between MPO and renal function.
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Affiliation(s)
- Liane Correia-Costa
- EPIUnit - Institute of Public Health, University of Porto, Porto, Portugal.,Division of Pediatric Nephrology, Integrated Pediatric Hospital, Centro Hospitalar São João, Porto, Portugal
| | - Teresa Sousa
- Department of Pharmacology and Therapeutics, Faculty of Medicine of University of Porto, Porto, Portugal.,MedInUP - Center for Drug Discovery and Innovative Medicines, University of Porto, Porto, Portugal
| | - Manuela Morato
- Department of Pharmacology and Therapeutics, Faculty of Medicine of University of Porto, Porto, Portugal.,MedInUP - Center for Drug Discovery and Innovative Medicines, University of Porto, Porto, Portugal.,Laboratory of Pharmacology, Department of Drug Sciences, Faculty of Pharmacy of Porto, REQUIMTE, University of Porto, Porto, Portugal
| | - Dina Cosme
- EPIUnit - Institute of Public Health, University of Porto, Porto, Portugal.,Department of Pharmacology and Therapeutics, Faculty of Medicine of University of Porto, Porto, Portugal
| | - Joana Afonso
- Department of Pharmacology and Therapeutics, Faculty of Medicine of University of Porto, Porto, Portugal
| | - Cláudia Moura
- Division of Pediatric Cardiology, Integrated Pediatric Hospital, Centro Hospitalar São João, Porto, Portugal
| | - Cláudia Mota
- Division of Pediatric Cardiology, Integrated Pediatric Hospital, Centro Hospitalar São João, Porto, Portugal
| | - José Carlos Areias
- Division of Pediatric Cardiology, Integrated Pediatric Hospital, Centro Hospitalar São João, Porto, Portugal
| | - António Guerra
- Division of Pediatric Nutrition, Integrated Pediatric Hospital, Centro Hospitalar São João, Porto, Portugal
| | - Franz Schaefer
- Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, University of Heidelberg, Heidelberg, Germany
| | - Alberto Caldas Afonso
- EPIUnit - Institute of Public Health, University of Porto, Porto, Portugal.,Division of Pediatric Nephrology, Integrated Pediatric Hospital, Centro Hospitalar São João, Porto, Portugal
| | - Henrique Barros
- EPIUnit - Institute of Public Health, University of Porto, Porto, Portugal.,Department of Clinical Epidemiology, Predictive Medicine and Public Health, Faculty of Medicine of University of Porto, Porto, Portugal
| | - António Albino-Teixeira
- Department of Pharmacology and Therapeutics, Faculty of Medicine of University of Porto, Porto, Portugal.,MedInUP - Center for Drug Discovery and Innovative Medicines, University of Porto, Porto, Portugal
| | - Ana Azevedo
- EPIUnit - Institute of Public Health, University of Porto, Porto, Portugal.,Department of Clinical Epidemiology, Predictive Medicine and Public Health, Faculty of Medicine of University of Porto, Porto, Portugal
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247
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Abstract
Reactive oxygen species (ROS) cause damage to macromolecules such as proteins, lipids and DNA and alters their structure and function. When generated outside the cell, ROS can induce damage to anti-proteinases. Anti-proteinases are proteins that are involved in the control and regulation of proteolytic enzymes. The damage caused to anti-proteinase barrier disturbs the proteinase-anti-proteinases balance and uncontrolled proteolysis at the site of injury promotes tissue damage. Studies have shown that ROS damages anti-proteinase shield of the body by inactivating key members such as alpha-2-macroglobulin, alpha-1-antitrypsin. Hypochlorous acid inactivates α-1-antitrypsin by oxidizing a critical reactive methionine residue. Superoxide and hypochlorous acid are physiological inactivators of alpha-2-macroglobulin. The damage to anti-proteinase barrier induced by ROS is a hallmark of diseases such as atherosclerosis, emphysema and rheumatoid arthritis. Thus, understanding the behaviour of ROS-induced damage to anti-proteinases may helps us in development of strategies that could control these inflammatory reactions and diseases.
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Affiliation(s)
- Tooba Siddiqui
- a Department of Biochemistry , Faculty of Life Science, Aligarh Muslim University , Aligarh , India and
| | - Mohammad Khalid Zia
- a Department of Biochemistry , Faculty of Life Science, Aligarh Muslim University , Aligarh , India and
| | - Syed Saqib Ali
- a Department of Biochemistry , Faculty of Life Science, Aligarh Muslim University , Aligarh , India and
| | - Ahmed Abdur Rehman
- a Department of Biochemistry , Faculty of Life Science, Aligarh Muslim University , Aligarh , India and
| | - Haseeb Ahsan
- b Department of Biochemistry , Faculty of Dentistry, Jamia Millia Islamia , New Delhi , India
| | - Fahim Halim Khan
- a Department of Biochemistry , Faculty of Life Science, Aligarh Muslim University , Aligarh , India and
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248
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Zhang H, Ray A, Miller NM, Hartwig D, Pritchard KA, Dittel BN. Inhibition of myeloperoxidase at the peak of experimental autoimmune encephalomyelitis restores blood-brain barrier integrity and ameliorates disease severity. J Neurochem 2015; 136:826-836. [PMID: 26560636 DOI: 10.1111/jnc.13426] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Revised: 10/29/2015] [Accepted: 10/30/2015] [Indexed: 01/15/2023]
Abstract
Oxidative stress is thought to contribute to disease pathogenesis in the central nervous system (CNS) disease multiple sclerosis (MS). Myeloperoxidase (MPO), a potent peroxidase that generates toxic radicals and oxidants, is increased in the CNS during MS. However, the exact mechanism whereby MPO drives MS pathology is not known. We addressed this question by inhibiting MPO in mice with experimental autoimmune encephalomyelitis (EAE) using our non-toxic MPO inhibitor N-acetyl lysyltyrosylcysteine amide (KYC). We found that therapeutic administration of KYC for 5 days starting at the peak of disease significantly attenuated EAE disease severity, reduced myeloid cell numbers and permeability of the blood-brain barrier. These data indicate that inhibition of MPO by KYC restores blood-brain barrier integrity thereby limiting migration of myeloid cells into the CNS that drive EAE pathogenesis. In addition, these observations indicate that KYC may be an effective therapeutic agent for the treatment of MS. We propose that during experimental autoimmune encephalomyelitis (EAE) onset macrophages and neutrophils migrate into the CNS and upon activation release myeloperoxidase (MPO) that promotes disruption of the blood-brain barrier (BBB) and disease progression. KYC restores BBB function by inhibiting MPO activity and in so doing ameliorates disease progression.
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Affiliation(s)
- Hao Zhang
- Department of Surgery, Division of Pediatric Surgery, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Avijit Ray
- Blood Research Institute, BloodCenter of Wisconsin, Milwaukee, Wisconsin, USA
| | - Nichole M Miller
- Blood Research Institute, BloodCenter of Wisconsin, Milwaukee, Wisconsin, USA
| | - Danielle Hartwig
- Department of Surgery, Division of Pediatric Surgery, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Kirkwood A Pritchard
- Department of Surgery, Division of Pediatric Surgery, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Bonnie N Dittel
- Blood Research Institute, BloodCenter of Wisconsin, Milwaukee, Wisconsin, USA
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249
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Zhang Y, Seeburg DP, Pulli B, Wojtkiewicz GR, Bure L, Atkinson W, Schob S, Iwamoto Y, Ali M, Zhang W, Rodriguez E, Milewski A, Keliher EJ, Wang C, Pan Y, Swirski FK, Chen JW. Myeloperoxidase Nuclear Imaging for Epileptogenesis. Radiology 2015; 278:822-30. [PMID: 26397127 DOI: 10.1148/radiol.2015141922] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
PURPOSE To determine if myeloperoxidase (MPO) is involved in epileptogenesis and if molecular nuclear imaging can be used to noninvasively map inflammatory changes in epileptogenesis. MATERIALS AND METHODS The animal and human studies were approved by the institutional review boards. Pilocarpine-induced epileptic mice were treated with 4-aminobenzoic acid hydrazide (n = 46), a specific irreversible MPO inhibitor, or saline (n = 42). Indium-111-bis-5-hydroxytryptamide-diethylenetriaminepentaacetate was used to image brain MPO activity (n = 6 in the 4-aminobenzoic acid hydrazide and saline groups; n = 5 in the sham group) by using single photon emission computed tomography/computed tomography. The role of MPO in the development of spontaneous recurrent seizures was assessed by means of clinical symptoms and biochemical and histopathologic data. Human brain specimens from a patient with epilepsy and a patient without epilepsy were stained for MPO. The Student t test, one-way analysis of variance, and Mann-Whitney and Kruskal-Wallis tests were used. Differences were regarded as significant if P was less than .05. RESULTS MPO and leukocytes increased in the brain during epileptogenesis (P < .05). Blocking MPO delayed spontaneous recurrent seizures (99.6 vs 142 hours, P = .016), ameliorated the severity of spontaneous recurrent seizures (P < .05), and inhibited mossy fiber sprouting (Timm index, 0.31 vs 0.03; P = .003). Matrix metalloproteinase activity was upregulated during epileptogenesis in an MPO-dependent manner (1.44 vs 0.94 U/mg, P = .049), suggesting that MPO acts upstream of matrix metalloproteinases. MPO activity was mapped during epileptogenesis in vivo in the hippocampal regions. Resected temporal lobe tissue from a human patient with refractory epilepsy but not the temporal lobe tissue from a patient without seizures demonstrated positive MPO immunostaining, suggesting high translational potential for this imaging technology. CONCLUSION The findings of this study highlight an important role for MPO in epileptogenesis and show MPO to be a potential therapeutic target and imaging biomarker for epilepsy.
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Affiliation(s)
- Yinian Zhang
- From the Department of Neurosurgery, Lanzhou University Second Hospital, Lanzhou, China (Y.Z., Y.P.); Center for Systems Biology and Department of Radiology, Massachusetts General Hospital, 185 Cambridge St, Boston, MA 02114 (Y.Z., D.P.S., B.P., G.R.W., L.B., W.A., S.S., Y.I., M.A., E.R., A.M., E.J.K., C.W., F.K.S., J.W.C.); and Department of Neurosurgery, Massachusetts General Hospital, Boston, Mass (W.Z.)
| | - Daniel P Seeburg
- From the Department of Neurosurgery, Lanzhou University Second Hospital, Lanzhou, China (Y.Z., Y.P.); Center for Systems Biology and Department of Radiology, Massachusetts General Hospital, 185 Cambridge St, Boston, MA 02114 (Y.Z., D.P.S., B.P., G.R.W., L.B., W.A., S.S., Y.I., M.A., E.R., A.M., E.J.K., C.W., F.K.S., J.W.C.); and Department of Neurosurgery, Massachusetts General Hospital, Boston, Mass (W.Z.)
| | - Benjamin Pulli
- From the Department of Neurosurgery, Lanzhou University Second Hospital, Lanzhou, China (Y.Z., Y.P.); Center for Systems Biology and Department of Radiology, Massachusetts General Hospital, 185 Cambridge St, Boston, MA 02114 (Y.Z., D.P.S., B.P., G.R.W., L.B., W.A., S.S., Y.I., M.A., E.R., A.M., E.J.K., C.W., F.K.S., J.W.C.); and Department of Neurosurgery, Massachusetts General Hospital, Boston, Mass (W.Z.)
| | - Gregory R Wojtkiewicz
- From the Department of Neurosurgery, Lanzhou University Second Hospital, Lanzhou, China (Y.Z., Y.P.); Center for Systems Biology and Department of Radiology, Massachusetts General Hospital, 185 Cambridge St, Boston, MA 02114 (Y.Z., D.P.S., B.P., G.R.W., L.B., W.A., S.S., Y.I., M.A., E.R., A.M., E.J.K., C.W., F.K.S., J.W.C.); and Department of Neurosurgery, Massachusetts General Hospital, Boston, Mass (W.Z.)
| | - Lionel Bure
- From the Department of Neurosurgery, Lanzhou University Second Hospital, Lanzhou, China (Y.Z., Y.P.); Center for Systems Biology and Department of Radiology, Massachusetts General Hospital, 185 Cambridge St, Boston, MA 02114 (Y.Z., D.P.S., B.P., G.R.W., L.B., W.A., S.S., Y.I., M.A., E.R., A.M., E.J.K., C.W., F.K.S., J.W.C.); and Department of Neurosurgery, Massachusetts General Hospital, Boston, Mass (W.Z.)
| | - Wendy Atkinson
- From the Department of Neurosurgery, Lanzhou University Second Hospital, Lanzhou, China (Y.Z., Y.P.); Center for Systems Biology and Department of Radiology, Massachusetts General Hospital, 185 Cambridge St, Boston, MA 02114 (Y.Z., D.P.S., B.P., G.R.W., L.B., W.A., S.S., Y.I., M.A., E.R., A.M., E.J.K., C.W., F.K.S., J.W.C.); and Department of Neurosurgery, Massachusetts General Hospital, Boston, Mass (W.Z.)
| | - Stefan Schob
- From the Department of Neurosurgery, Lanzhou University Second Hospital, Lanzhou, China (Y.Z., Y.P.); Center for Systems Biology and Department of Radiology, Massachusetts General Hospital, 185 Cambridge St, Boston, MA 02114 (Y.Z., D.P.S., B.P., G.R.W., L.B., W.A., S.S., Y.I., M.A., E.R., A.M., E.J.K., C.W., F.K.S., J.W.C.); and Department of Neurosurgery, Massachusetts General Hospital, Boston, Mass (W.Z.)
| | - Yoshiko Iwamoto
- From the Department of Neurosurgery, Lanzhou University Second Hospital, Lanzhou, China (Y.Z., Y.P.); Center for Systems Biology and Department of Radiology, Massachusetts General Hospital, 185 Cambridge St, Boston, MA 02114 (Y.Z., D.P.S., B.P., G.R.W., L.B., W.A., S.S., Y.I., M.A., E.R., A.M., E.J.K., C.W., F.K.S., J.W.C.); and Department of Neurosurgery, Massachusetts General Hospital, Boston, Mass (W.Z.)
| | - Muhammad Ali
- From the Department of Neurosurgery, Lanzhou University Second Hospital, Lanzhou, China (Y.Z., Y.P.); Center for Systems Biology and Department of Radiology, Massachusetts General Hospital, 185 Cambridge St, Boston, MA 02114 (Y.Z., D.P.S., B.P., G.R.W., L.B., W.A., S.S., Y.I., M.A., E.R., A.M., E.J.K., C.W., F.K.S., J.W.C.); and Department of Neurosurgery, Massachusetts General Hospital, Boston, Mass (W.Z.)
| | - Wei Zhang
- From the Department of Neurosurgery, Lanzhou University Second Hospital, Lanzhou, China (Y.Z., Y.P.); Center for Systems Biology and Department of Radiology, Massachusetts General Hospital, 185 Cambridge St, Boston, MA 02114 (Y.Z., D.P.S., B.P., G.R.W., L.B., W.A., S.S., Y.I., M.A., E.R., A.M., E.J.K., C.W., F.K.S., J.W.C.); and Department of Neurosurgery, Massachusetts General Hospital, Boston, Mass (W.Z.)
| | - Elisenda Rodriguez
- From the Department of Neurosurgery, Lanzhou University Second Hospital, Lanzhou, China (Y.Z., Y.P.); Center for Systems Biology and Department of Radiology, Massachusetts General Hospital, 185 Cambridge St, Boston, MA 02114 (Y.Z., D.P.S., B.P., G.R.W., L.B., W.A., S.S., Y.I., M.A., E.R., A.M., E.J.K., C.W., F.K.S., J.W.C.); and Department of Neurosurgery, Massachusetts General Hospital, Boston, Mass (W.Z.)
| | - Andrew Milewski
- From the Department of Neurosurgery, Lanzhou University Second Hospital, Lanzhou, China (Y.Z., Y.P.); Center for Systems Biology and Department of Radiology, Massachusetts General Hospital, 185 Cambridge St, Boston, MA 02114 (Y.Z., D.P.S., B.P., G.R.W., L.B., W.A., S.S., Y.I., M.A., E.R., A.M., E.J.K., C.W., F.K.S., J.W.C.); and Department of Neurosurgery, Massachusetts General Hospital, Boston, Mass (W.Z.)
| | - Edmund J Keliher
- From the Department of Neurosurgery, Lanzhou University Second Hospital, Lanzhou, China (Y.Z., Y.P.); Center for Systems Biology and Department of Radiology, Massachusetts General Hospital, 185 Cambridge St, Boston, MA 02114 (Y.Z., D.P.S., B.P., G.R.W., L.B., W.A., S.S., Y.I., M.A., E.R., A.M., E.J.K., C.W., F.K.S., J.W.C.); and Department of Neurosurgery, Massachusetts General Hospital, Boston, Mass (W.Z.)
| | - Cuihua Wang
- From the Department of Neurosurgery, Lanzhou University Second Hospital, Lanzhou, China (Y.Z., Y.P.); Center for Systems Biology and Department of Radiology, Massachusetts General Hospital, 185 Cambridge St, Boston, MA 02114 (Y.Z., D.P.S., B.P., G.R.W., L.B., W.A., S.S., Y.I., M.A., E.R., A.M., E.J.K., C.W., F.K.S., J.W.C.); and Department of Neurosurgery, Massachusetts General Hospital, Boston, Mass (W.Z.)
| | - Yawen Pan
- From the Department of Neurosurgery, Lanzhou University Second Hospital, Lanzhou, China (Y.Z., Y.P.); Center for Systems Biology and Department of Radiology, Massachusetts General Hospital, 185 Cambridge St, Boston, MA 02114 (Y.Z., D.P.S., B.P., G.R.W., L.B., W.A., S.S., Y.I., M.A., E.R., A.M., E.J.K., C.W., F.K.S., J.W.C.); and Department of Neurosurgery, Massachusetts General Hospital, Boston, Mass (W.Z.)
| | - Filip K Swirski
- From the Department of Neurosurgery, Lanzhou University Second Hospital, Lanzhou, China (Y.Z., Y.P.); Center for Systems Biology and Department of Radiology, Massachusetts General Hospital, 185 Cambridge St, Boston, MA 02114 (Y.Z., D.P.S., B.P., G.R.W., L.B., W.A., S.S., Y.I., M.A., E.R., A.M., E.J.K., C.W., F.K.S., J.W.C.); and Department of Neurosurgery, Massachusetts General Hospital, Boston, Mass (W.Z.)
| | - John W Chen
- From the Department of Neurosurgery, Lanzhou University Second Hospital, Lanzhou, China (Y.Z., Y.P.); Center for Systems Biology and Department of Radiology, Massachusetts General Hospital, 185 Cambridge St, Boston, MA 02114 (Y.Z., D.P.S., B.P., G.R.W., L.B., W.A., S.S., Y.I., M.A., E.R., A.M., E.J.K., C.W., F.K.S., J.W.C.); and Department of Neurosurgery, Massachusetts General Hospital, Boston, Mass (W.Z.)
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Jiang Y, Zhang W, Gao F, Zhou G. Effect of sodium butyrate on intestinal inflammatory response to lipopolysaccharide in broiler chickens. CANADIAN JOURNAL OF ANIMAL SCIENCE 2015. [DOI: 10.4141/cjas-2014-183] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Jiang, Y., Zhang, W., Gao, F. and Zhou, G. 2015. Effect of sodium butyrate on intestinal inflammatory response to lipopolysaccharide in broiler chickens. Can. J. Anim. Sci. 95: 389–395. The aim of this study was to investigate the effect of sodium butyrate (SB) supplementation on intestinal inflammatory response to lipopolysaccharide (LPS) in broiler chickens. A total of 120 one-day-old chickens (Arbor Acres) were divided into two groups and fed a control diet (without SB) or 1.00 g SB kg−1 diet. Half of the chickens fed each diet were injected intra-peritoneally with 0.5 g kg−1 body weight of Escherichia coli LPS at 16, 18 and 20 d of age. The results showed that the LPS challenge decreased (P<0.05) villus height and the ratio of villus height to crypt depth (V/C ratio), increased (P<0.01) crypt depth of the duodenum. SB supplementation increased (P<0.05) villus height, crypt depth and V/C ratio of the duodenum and jejunum, except for the crypt depth of the jejunum. The LPS challenge increased (P<0.05) myeloperoxidase (MPO) activities, intercellular adhesion molecule-1 (ICAM-1) and activated nuclear factor kappa B (NF-κB) levels in mucosa of the duodenum and jejunum, while decreasing (P<0.05) insulin-like growth factor-1 (IGF-1) concentrations. The LPS challenge increased (P<0.05) the mRNA levels of interleukin-1beta (IL-1β), interleukin-6 (IL-6) and tumor necrosis factor-alpha (TNF-α) in duodenal mucosa. SB supplementation decreased (P<0.05) the MPO activities and mRNA expression of TNF-α in the duodenal mucosa, and the activated NF-κB levels in mucosa of the duodenum and jejunum. There were no significant interactions between dietary SB and LPS on the histomorphology of the small intestine and those inflammatory mediators except for MPO and ICAM-1 in duodenal mucosa (P<0.05). The results indicate that SB supplementation could improve the intestinal morphology and function of broiler chickens and partially attenuate inflammatory responses caused by LPS challenge but not involving NF-κB activation.
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Affiliation(s)
- Yun Jiang
- College of Animal Science and Technology, Synergetic Innovation Center of Food Safety and Nutrition, Nanjing Agricultural University, Nanjing 210095, People's Republic of China
- Ginling College, Nanjing Normal University, Nanjing, 210097, People's Republic of China
- These authors contributed equally to this work
| | - Weihui Zhang
- College of Animal Science and Technology, Synergetic Innovation Center of Food Safety and Nutrition, Nanjing Agricultural University, Nanjing 210095, People's Republic of China
- These authors contributed equally to this work
| | - Feng Gao
- College of Animal Science and Technology, Synergetic Innovation Center of Food Safety and Nutrition, Nanjing Agricultural University, Nanjing 210095, People's Republic of China
| | - Guanghong Zhou
- College of Animal Science and Technology, Synergetic Innovation Center of Food Safety and Nutrition, Nanjing Agricultural University, Nanjing 210095, People's Republic of China
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