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Wang W, Wang Y, Zhao W, Zhao C. A Straightforward Approach towards Antibacterial and Anti-Inflammatory Multifunctional Nanofiber Membranes with Sustained Drug Release Profiles. Macromol Biosci 2022; 22:e2200150. [PMID: 35856465 DOI: 10.1002/mabi.202200150] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2022] [Revised: 06/25/2022] [Indexed: 12/25/2022]
Abstract
Preventing bacterial infection and controlling the inflammatory response occupy important positions in wound treatment. Although loading wound dressings with antibacterial or anti-inflammatory drugs/molecules is an effective approach to address these issues, simultaneous sustained release of these drugs remains challenging. Herein, hydrophilic polyhexamethylene guanidine hydrochloride (PHGC) and hydrophobic indomethacin (Indo) are loaded in hydrophilic polyvinyl alcohol (PVA) and hydrophobic polycaprolactone (PCL) nanofibers respectively by bidirectional electrospinning to form an antibacterial and anti-inflammatory PCL-Indo/PVA-PHGC wound dressing. The fabricated nanofiber membrane exhibits 100% disinfection activity to both Gram-negative (E. coli) and Gram-positive (S. aureus) bacteria because of the release of the broad-spectrum antibacterial molecule PHGC. Additionally, the loading of Indo in the nanofiber membrane enhances the expression level of IL-10, while inhibiting those of IL-6 and TNF-α in the RAW264.7 mouse cells. In the interwoven membrane of PCL and PVA fibers, the release of hydrophobic Indo is hindered by hydrophilic PHGC and PVA fibers, and similarly, the release of hydrophilic PHGC is hindered by hydrophobic Indo and PCL fibers. In conclusion, the PCL-Indo/PVA-PHGC nanofiber membrane has excellent antibacterial, anti-inflammatory, and sustained-release effects, and thus regulates the immune microenvironment of the cells to potentially promote wound healing.
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Affiliation(s)
- Wenjie Wang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China
| | - Yilin Wang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China
| | - Weifeng Zhao
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China.,Med-X Center for Materials, Sichuan University, Chengdu, 610041, China
| | - Changsheng Zhao
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China.,Med-X Center for Materials, Sichuan University, Chengdu, 610041, China
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Dos Santos Guilherme M, Tsoutsouli T, Chongtham MC, Winter J, Gerber S, Müller MB, Endres K. Selective targeting of chronic social stress-induced activated neurons identifies neurogenesis-related genes to be associated with resilience in female mice. Psychoneuroendocrinology 2022; 139:105700. [PMID: 35220090 DOI: 10.1016/j.psyneuen.2022.105700] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 01/17/2022] [Accepted: 02/17/2022] [Indexed: 11/16/2022]
Abstract
Prolonged social stress is a major cause for depression in humans and is associated with a wide range of subsequent pathophysiological changes such as elevated blood pressure. A routinely used model for investigating this kind of stress in mice is the chronic social defeat paradigm where a smaller intruder is exposed to an aggressive inhabitant of a home cage. This model is restricted to males and includes a high proportion of physical stress that might e.g., interfere with immunological aspects of the stress. The prevalence of depression in humans is even higher in women than in men. Therefore, expanding models to female individuals is desirable. We here tested the social instability model as a tool for administering chronic social stress to female C57BL/6J mice and analyzed short-term as well as long-lasting effects. Animals were housed in groups of four and were shuffled two times a week, resulting in a permanent re-structuration of their social hierarchy. While directly after the stress exposure, serum corticosterone was elevated, increased body weight and fat deposits were observed in stressed mice even one year after discontinuation of the stress. At the behavioral level, animals could be stratified into resilient and susceptible animals directly post-stress, but those subgroups were not distinguishable any more in the long-term analysis. To identify molecular contributors to resilience in the here presented social instability induced stress model, Arc-activity dependent trapping of neurons was conducted in Arc-creERT2/sun1sfGFP mice. RNA samples derived from activated nuclei from the ventral hippocampus, a brain region involved in stress-regulation during attacks or explorative behavior of mice, were subjected to a neurogenesis pathway array. While several genes were differentially regulated by stress, in particular, artemin, a neurotrophic factor was upregulated in resilient versus susceptible individuals.
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Affiliation(s)
- Malena Dos Santos Guilherme
- Department of Psychiatry and Psychotherapy, University Medical Center, Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Theodora Tsoutsouli
- Department of Psychiatry and Psychotherapy, University Medical Center, Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Monika Chanu Chongtham
- Institute for Human Genetics, University Medical Center, Johannes Gutenberg University Mainz, Mainz, Germany; Leibniz Institute for Resilience Research (LIR), Mainz, Germany
| | - Jennifer Winter
- Institute for Human Genetics, University Medical Center, Johannes Gutenberg University Mainz, Mainz, Germany; Leibniz Institute for Resilience Research (LIR), Mainz, Germany
| | - Susanne Gerber
- Institute for Human Genetics, University Medical Center, Johannes Gutenberg University Mainz, Mainz, Germany
| | - Marianne B Müller
- Department of Psychiatry and Psychotherapy, University Medical Center, Johannes Gutenberg-University Mainz, Mainz, Germany; Leibniz Institute for Resilience Research (LIR), Mainz, Germany
| | - Kristina Endres
- Department of Psychiatry and Psychotherapy, University Medical Center, Johannes Gutenberg-University Mainz, Mainz, Germany.
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Beneficial effects of tamoxifen on leptin sensitivity in young mice fed a high fat diet: Role of estrogen receptor α and cytokines. Life Sci 2020; 246:117384. [PMID: 32061672 DOI: 10.1016/j.lfs.2020.117384] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Revised: 01/26/2020] [Accepted: 01/28/2020] [Indexed: 01/02/2023]
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Evans ES, Hackney AC, Pebole MM, McMurray RG, Muss HB, Deal AM, Battaglini CL. Adrenal Hormone and Metabolic Biomarker Responses to 30 min of Intermittent Cycling Exercise in Breast Cancer Survivors. Int J Sports Med 2016; 37:921-929. [PMID: 27490111 DOI: 10.1055/s-0042-110654] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
The aim of this study was to explore the effect of one bout of aerobic exercise on epinephrine, norepinephrine, cortisol, glucose, lactate, and free fatty acid (FFA) responses in breast cancer survivors and healthy controls. 9 female breast cancer survivors and 9 women without a history of cancer completed 30 min of cycle ergometry exercise at 60% of VO2peak. Blood samples were taken pre-exercise, immediately post-exercise, and 2 h post-exercise from which plasma concentrations of study variables were measured. Immediately and 2 h post-exercise, increases were observed in epinephrine (control group only) norepinephrine (both groups), lactate (both groups), and FFA (both groups immediately post-exercise; breast cancer survivor group only at 2 h post-exercise) (p<0.05). Cortisol decreased immediately and 2 h post-exercise in the control group while glucose decreased immediately post-exercise in the breast cancer survivor group (p<0.05). In conclusion, breast cancer survivors appeared to display attenuated epinephrine, cortisol, and lactate responses while displaying larger magnitude changes in glucose and FFA responses compared to controls. These preliminary findings may have implications for the regulation of metabolism during exercise in breast cancer survivors.
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Affiliation(s)
- E S Evans
- Physical Therapy Education, Elon University, Elon, NC, United States
| | - A C Hackney
- Exercise and Sport Science, University of North Carolina at Chapel Hill, NC, United States
| | - M M Pebole
- Exercise and Sport Science, University of North Carolina at Chapel Hill, NC, United States
| | - R G McMurray
- Exercise and Sport Science, University of North Carolina at Chapel Hill, NC, United States
| | - H B Muss
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - A M Deal
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - C L Battaglini
- Exercise and Sport Science, University of North Carolina at Chapel Hill, NC, United States
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Seo SW, Koeppen M, Bonney S, Gobel M, Thayer M, Harter PN, Ravid K, Eltzschig HK, Mittelbronn M, Walker L, Eckle T. Differential Tissue-Specific Function of Adora2b in Cardioprotection. THE JOURNAL OF IMMUNOLOGY 2015; 195:1732-43. [PMID: 26136425 DOI: 10.4049/jimmunol.1402288] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2014] [Accepted: 06/03/2015] [Indexed: 01/18/2023]
Abstract
The adenosine A2b receptor (Adora2b) has been implicated in cardioprotection from myocardial ischemia. As such, Adora2b was found to be critical in ischemic preconditioning (IP) or ischemia/reperfusion (IR) injury of the heart. Whereas Adora2b is present on various cells types, the tissue-specific role of Adora2b in cardioprotection is still unknown. To study the tissue-specific role of Adora2b signaling on inflammatory cells, endothelia, or myocytes during myocardial ischemia in vivo, we intercrossed floxed Adora2b mice with Lyz2-Cre(+), VE-cadherin-Cre(+), or myosin-Cre(+) transgenic mice, respectively. Mice were exposed to 60 min of myocardial ischemia with or without IP (four times for 5 min) followed by 120 min of reperfusion. Cardioprotection by IP was abolished in Adora2b(f/f)-VE-cadherin-Cre(+) or Adora2b(f/f)-myosin-Cre(+), indicating that Adora2b signaling on endothelia or myocytes mediates IP. In contrast, primarily Adora2b signaling on inflammatory cells was necessary to provide cardioprotection in IR injury, indicated by significantly larger infarcts and higher troponin levels in Adora2b(f/f)-Lyz2-Cre(+) mice only. Cytokine profiling of IR injury in Adora2b(f/f)-Lyz2-Cre(+) mice pointed toward polymorphonuclear neutrophils (PMNs). Analysis of PMNs from Adora2b(f/f)-Lyz2-Cre(+) confirmed PMNs as one source of identified tissue cytokines. Finally, adoptive transfer of Adora2b(-/-) PMNs revealed a critical role of Adora2b on PMNs in cardioprotection from IR injury. Adora2b signaling mediates different types of cardioprotection in a tissue-specific manner. These findings have implications for the use of Adora2b agonists in the treatment or prevention of myocardial injury by ischemia.
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Affiliation(s)
- Seong-wook Seo
- Department of Anesthesiology, University of Colorado Denver, Aurora, CO 80045; Department of Biochemistry and Molecular Biology, School of Medicine, Kyung Hee University, Seoul 130-701, Republic of Korea
| | - Michael Koeppen
- Department of Anesthesiology, University of Colorado Denver, Aurora, CO 80045; Department of Anesthesiology, Ludwig Maximilians University Munich, 80336 Munich, Germany
| | - Stephanie Bonney
- Department of Anesthesiology, University of Colorado Denver, Aurora, CO 80045
| | - Merit Gobel
- Department of Anesthesiology, University of Colorado Denver, Aurora, CO 80045
| | - Molly Thayer
- Department of Anesthesiology, University of Colorado Denver, Aurora, CO 80045
| | - Patrick N Harter
- Institute of Neurology (Edinger Institute), University of Frankfurt, 60528 Frankfurt, Germany
| | - Katya Ravid
- Department of Medicine, Boston University School of Medicine, Boston, MA 02118; Department of Biochemistry, Boston University School of Medicine, Boston, MA 02118; and
| | - Holger K Eltzschig
- Department of Anesthesiology, University of Colorado Denver, Aurora, CO 80045
| | - Michel Mittelbronn
- Institute of Neurology (Edinger Institute), University of Frankfurt, 60528 Frankfurt, Germany
| | - Lori Walker
- Division of Cardiology, University of Colorado Denver, Aurora, CO 80045
| | - Tobias Eckle
- Department of Anesthesiology, University of Colorado Denver, Aurora, CO 80045;
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Atila A, Kadioglu Y, Suleyman H. Effects of paracetamol and etodolac on plasma adrenaline levels of rats. Med Chem Res 2014. [DOI: 10.1007/s00044-014-1047-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Isaoglu U, Yilmaz M, Calik M, Polat B, Bakan E, Kurt A, Albayrak Y, Suleyman H. Biochemical and histopathological investigation of the protective effect of disulfiram in ischemia-induced ovary damage. Gynecol Endocrinol 2012; 28:143-7. [PMID: 21756070 DOI: 10.3109/09513590.2011.589922] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
It was biochemically and histopathologically investigated whether disulfiram has protective effects on ischemia-induced ovary damage. For this purpose, levels of tGSH, superoxide dismutase (SOD), malondialdehyde (MDA), and 8-OH Gua/Gua were investigated in ischemic rat ovary tissue. Results show that used doses of disulfiram (10, 25, and 50 mg/kg) prevent MDA, a product of ischemia-induced lipid peroxidation, formation in female rat ovary tissue and prevent decrease of enzymatic and non-enzymatic (SOD, GSH) antioxidant parameters. Additionally, all doses of disulfiram significantly prevent DNA damage when compared to control group. Fewer histopathological findings were observed in tissues with higher antioxidant levels and lower oxidant and DNA damage levels.
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Affiliation(s)
- Unal Isaoglu
- Nenehatun Obstetrics and Gynecology Hospital, Erzurum, Turkey
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