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Mirzadegan E, Golshahi H, Saffarian Z, Edalatkhah H, Darzi M, Khorasani S, Saliminejad K, Kazemnejad S. Application of Menstrual Blood Derived Stromal (stem) Cells Exert Greater Regenerative Potency Than Fibroblasts/Keratinocytes in Chronic Wounds of Diabetic Mice. Avicenna J Med Biotechnol 2023; 15:139-156. [PMID: 37538236 PMCID: PMC10395458 DOI: 10.18502/ajmb.v15i3.12923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Accepted: 03/15/2023] [Indexed: 08/05/2023] Open
Abstract
Background In this study we differentially showed the effects of cell-seeded bilayer scaffold wound dressing in accelerating healing process in diabetic ulcers that still remains as a major clinical challenge. The aim of the study was to compare immunomodulatory and angiogenic activity, and regenerative effect differences between Menstrual blood-derived Stem Cells (MenSCs) and foreskin-derived keratinocytes/fibroblasts. Methods The streptozotocin-induced diabetic mice model was developed in male C57/BL6 mice. A bilayer scaffold was fabricated by electrospining silk fibroin nano-fibers on human Amniotic Membrane (AM). Dermal fibroblasts and keratinocyte isolated from neonatal foreskin and MenSCs were isolated from the menstrual blood of healthy women. The diabetic mice were randomly divided into three groups including no treatment group, fibroblast/keratinocyte-seeded bilayer scaffold group (bSC+FK), and MenSCs-seeded bilayer scaffold group. The healing of full-thickness excisional wounds evaluations in the diabetic mice model in each group were evaluated at 3, 7, and 14 days after treatment. Results The gross and histological data sets significantly showed wound healing promotion via re-epithelialization and wound contraction along with enhanced regeneration in MenSCs-seeded bilayer scaffold group with the most similarity to adjacent intact tissue. Immunofluorescence staining of mouse skin depicted a descending trend of type III collagen along with the higher expression of involucrin as keratinocyte marker in the MenSCs-seeded bilayer nanofibrous scaffold group in comparison with other treatment groups from day 7 to day 14. Moreover, higher levels of CD31 and von Willebrand factor (VWF), and also a higher ratio of M2/M1 macrophages in association with higher levels of the neural marker were observed in the bSC+MenSCs group in comparison with bSC+FK and no treatment groups. Conclusion Healing symptoms in wounds dressed with keratinocyte/fibroblast-seeded bilayer scaffold was significantly lower than MenSCs-seeded bilayer scaffold done on impaired diabetic wound chronicity.
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Affiliation(s)
- Ebrahim Mirzadegan
- Nanobiotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran
| | - Hannaneh Golshahi
- Nanobiotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran
| | - Zahra Saffarian
- Nanobiotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran
| | - Haleh Edalatkhah
- Nanobiotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran
| | - Maryam Darzi
- Nanobiotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran
| | - Somayeh Khorasani
- Nanobiotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran
| | - Kioomars Saliminejad
- Reproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran
| | - Somaieh Kazemnejad
- Nanobiotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran
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Istek O, Tanrisever M, Kucukler S, Karabulut B, Cevik A. Comparison of the effects of Aloe vera gel and coconut oil on the healing of open wounds in rats. VET MED-CZECH 2023; 68:17-26. [PMID: 38384991 PMCID: PMC10878269 DOI: 10.17221/101/2021-vetmed] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Accepted: 11/07/2022] [Indexed: 02/23/2024] Open
Abstract
In this study, the effects of Aloe vera gel and coconut oil on wound healing were investigated and compared in rats. Forty-two Wistar albino rats were used during the experiment, in which they were operated on under general anaesthesia to create two full-thickness open skin wounds (created with a 0.5 cm diameter punch biopsy apparatus) on both back sides of the median line. A total of 42 rats were divided into three groups of 14 animals each to receive the topical application of Aloe vera gel (AV group - n = 14), coconut oil (CO group - n = 14) and cold cream (CONT group - n = 14). The medical applications were performed twice a day in all the groups. The wound borders were marked on a transparent sheet every day. Afterwards, this sheet was transferred to the millimetre graph paper. On days 0, 7, and 14, the unhealed wound area was measured in all the groups. On days 7 and 14, seven rats in each group were euthanised. Then, skin samples including the intact skin were taken from the wound sites for histopathological and biochemical evaluations. The topical application of Aloe vera gel showed a significant increase in the healing process of the open wounds in terms of the clinical evaluation, histopathological and biochemical data averages when compared with the coconut oil and cold cream groups of rats (P < 0.05). The results obtained in the present study demonstrate that Aloe vera gel may provide a good alternative for the treatment of open wounds.
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Affiliation(s)
- Ozmen Istek
- Department of Nursing, Faculty of Health Sciences, Mus Alparslan University, Muş, Türkiye
| | - Murat Tanrisever
- Department of Surgery, Veterinary Faculty, Firat University, Elazığ, Türkiye
| | - Sefa Kucukler
- Department of Biochemistry, Veterinary Faculty, Atatürk University, Erzurum, Türkiye
| | - Burak Karabulut
- Department of Pathology, Veterinary Faculty, Firat University, Elazığ, Türkiye
| | - Aydin Cevik
- Department of Pathology, Veterinary Faculty, Firat University, Elazığ, Türkiye
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Rezvani Ghomi E, Niazi M, Ramakrishna S. The evolution of wound dressings: From traditional to smart dressings. POLYM ADVAN TECHNOL 2022. [DOI: 10.1002/pat.5929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Erfan Rezvani Ghomi
- Center for Nanotechnology and Sustainability, Department of Mechanical Engineering College of Design and Engineering Singapore Singapore
| | - Mina Niazi
- Department of Biomedical Engineering National University of Singapore Singapore Singapore
| | - Seeram Ramakrishna
- Center for Nanotechnology and Sustainability, Department of Mechanical Engineering College of Design and Engineering Singapore Singapore
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Alam MR, Shahid MA, Alimuzzaman S, Khan AN. Sources, extractions and applications of bio-maker collagen- A review. BIOMEDICAL ENGINEERING ADVANCES 2022. [DOI: 10.1016/j.bea.2022.100064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Vitamin D: A Role Also in Long COVID-19? Nutrients 2022; 14:nu14081625. [PMID: 35458189 PMCID: PMC9028162 DOI: 10.3390/nu14081625] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 03/20/2022] [Accepted: 04/01/2022] [Indexed: 12/11/2022] Open
Abstract
Coronavirus disease 2019 (COVID-19) has quickly become a global pandemic. Reports from different parts of the world indicate that a significant proportion of people who have recovered from COVID-19 are suffering from various health problems collectively referred to as “long COVID-19”. Common symptoms include fatigue, shortness of breath, cough, joint pain, chest pain, muscle aches, headaches, and so on. Vitamin D is an immunomodulatory hormone with proven efficacy against various upper respiratory tract infections. Vitamin D can inhibit hyperinflammatory reactions and accelerate the healing process in the affected areas, especially in lung tissue. Moreover, vitamin D deficiency has been associated with the severity and mortality of COVID-19 cases, with a high prevalence of hypovitaminosis D found in patients with COVID-19 and acute respiratory failure. Thus, there are promising reasons to promote research into the effects of vitamin D supplementation in COVID-19 patients. However, no studies to date have found that vitamin D affects post-COVID-19 symptoms or biomarkers. Based on this scenario, this review aims to provide an up-to-date overview of the potential role of vitamin D in long COVID-19 and of the current literature on this topic.
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Badawi Yousif A, Abdel-Aal AA, El-Tawab Sabry AEHA, Hashem El-Naggar AA, Masoud M, Mohamed S, M Shaapan R, M M Mohamed FA. Demodex Mites in Relation to the Degree of Acne Vulgaris among Egyptian Patients. Pak J Biol Sci 2022; 25:406-414. [PMID: 35638511 DOI: 10.3923/pjbs.2022.406.414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
<b>Background and Objective:</b> <i>Demodex</i> mites are considered to play a pathogenic role in facial dermatoses as <i>Acne vulgaris</i>. In this study the association between <i>Acne vulgaris</i> and <i>Demodex</i> spp. intensity, kind and activity were investigated. <b>Materials and Methods:</b> Two degrees of acne was included, mild acne (30 cases) and moderate to severe acne (30 cases), besides 30 healthy subjects as a control. Deep skin scraping followed by direct microscopic detection was applied to diagnose demodicosis. <b>Results:</b> All the detected mites in moderate to severe acne were <i>D. folliculorum</i> which was observed in a highly dynamic status with their entire life cycle stages with intensity >5 mites per cm<sup><a href="2246157_ja">2</a></sup>. While very few inactive <i>D. brevis</i> mites were detected in the 2 subjects related to the control group<i>. </i>Despite that females comprised the majority of acne cases, males encompassed a statistically higher number than females among positive demodicosis cases. Itching and hair loss were the significant clinical signs within positive cases. Regarding risk factors, oily skins, repeated exposure to the sun, stressful lifestyle plus defective use of facial cleansers were found to be statistically significant. <b>Conclusion:</b> These results attained an association between moderate to severe acne and energetic <i>D. folliculorum</i> entire population. Thus, this study recommended lifestyle's modification for those cases suffering from <i>Acne vulgaris</i> with deep facial cleaning to avoid such infestation that worsens acne condition. Accordingly, once acne treatments are ineffective, consideration of <i>Demodex</i> mites with the needed acaricidal therapy is necessary.
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A database on differentially expressed microRNAs during rodent bladder healing. Sci Rep 2021; 11:21881. [PMID: 34750474 PMCID: PMC8575992 DOI: 10.1038/s41598-021-01413-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Accepted: 10/27/2021] [Indexed: 11/08/2022] Open
Abstract
Urinary bladder wound healing relies on multiple biological events that are finely tuned in a spatial–temporal manner. MicroRNAs are small non-coding RNA molecules with regulatory functions. We hypothesized that microRNAs are important molecules in the coordination of normal urinary bladder wound healing. We aimed at identifying microRNAs expressed during bladder wound healing using Affymetrix global array for microRNA profiling of the rodent urinary bladder during healing of a surgically created wound. Results were validated in the rat bladders by real-time PCR (RT-PCR) using three of the differentially expressed (DE) microRNAs. The model was thereafter validated in human cells, by measuring the expression of eight of the DE microRNAs upon in vitro wound-healing assays in primary urothelial cells. Our results indicated that 508 (40%) of all rodent microRNAs were expressed in the urinary bladder during wound healing. Thirteen of these microRNAs (1%) were DE (false discovery rate (FDR) < 0.05, P < 0.05, |logfold|> 0.25) in wounded compared to non-wounded bladders. Bioinformatic analyses helped us to identify target molecules for the DE microRNAs, and biological pathways involved in tissue repair. All data are made available in an open-access database for other researchers to explore.
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Bielli A, Freitas-de-Melo A, Genovese P, Villagrán M, Tasende C, Ungerfeld R. Androgen and oestrogen receptors in the growing antlers velvet of adult and yearling pampas deer (Ozotoceros bezoarticus) males. Anat Histol Embryol 2021; 50:947-955. [PMID: 34549460 DOI: 10.1111/ahe.12738] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 07/09/2021] [Accepted: 09/15/2021] [Indexed: 11/28/2022]
Abstract
To determine the presence, quantity and distribution of androgen (AR) and oestrogen receptors (ER) in the antler velvet (AV), samples were collected from adult and yearling pampas deer males, as well as skin from the ventrolateral abdominal area (ASK). Samples were analysed with ligand-binding assays for AR and ER activity and processed for AR and ERβ immunohistochemistry. There was more content of AR in adults than in yearling males (p = 0.02), as well as a category and type of tissue interaction (p = 0.03). There was more ER content in adults than in yearling males (p = 0.005) and in the AV than in the skin (p = 0.0001). The AR-positive score (PS) was greater in AV than in ASK in the surface stroma (p = 0.0007). In the intermediate epidermis, the AR PS was greater in adults than in yearling males (p = 0.04) and in the ASK than in the AV (p < 0.0001). There was a male category and type of tissue interaction for AR PS in the sebaceous glands (p = 0.014). The ERβ PS in the surface stroma was greater in ASK than in AV (p = 0.004) and tended to be greater in yearling than in adult males (p = 0.093). The ERβ PS in the intermediate epithelium and the sebaceous glands was greater in adults than in yearlings (p = 0.004 and p = 0.007, respectively). In conclusion, we reported for the first time the presence of AR and ER in the velvet skin of growing antlers in pampas deer males. Therefore, the velvet skin is sensitive to both androgens and oestrogens. Furthermore, the greater content of oestrogen receptors in the velvet of adult males suggests that adults are more sensitive to this hormone than yearlings, and thus, oestrogens have greater importance in velvet activity regulation in adult males.
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Affiliation(s)
- Alejandro Bielli
- Departamento de Biociencias Veterinarias, Facultad de Veterinaria, Universidad de la República, Lasplaces 1620, Montevideo, Uruguay
| | - Aline Freitas-de-Melo
- Departamento de Biociencias Veterinarias, Facultad de Veterinaria, Universidad de la República, Lasplaces 1620, Montevideo, Uruguay
| | - Patricia Genovese
- Departamento de Biociencias Veterinarias, Facultad de Veterinaria, Universidad de la República, Lasplaces 1620, Montevideo, Uruguay
| | - Matías Villagrán
- Departamento de Biociencias Veterinarias, Facultad de Veterinaria, Universidad de la República, Lasplaces 1620, Montevideo, Uruguay
| | - Celia Tasende
- Departamento de Biociencias Veterinarias, Facultad de Veterinaria, Universidad de la República, Lasplaces 1620, Montevideo, Uruguay
| | - Rodolfo Ungerfeld
- Departamento de Biociencias Veterinarias, Facultad de Veterinaria, Universidad de la República, Lasplaces 1620, Montevideo, Uruguay
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Masson-Meyers DS, Tayebi L. Vascularization strategies in tissue engineering approaches for soft tissue repair. J Tissue Eng Regen Med 2021; 15:747-762. [PMID: 34058083 DOI: 10.1002/term.3225] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 05/08/2021] [Accepted: 05/17/2021] [Indexed: 12/21/2022]
Abstract
Insufficient vascularization during tissue repair is often associated with poor clinical outcomes. This is a concern especially when patients have critical-sized injuries, where the size of the defect restricts vascularity, or even in small defects that have to be treated under special conditions, such as after radiation therapy (relevant to tumor resection) that hinders vascularity. In fact, poor vascularization is one of the major obstacles for clinical application of tissue engineering methods in soft tissue repair. As a key issue, lack of graft integration, caused by inadequate vascularization after implantation, can lead to graft failure. Moreover, poor vascularization compromises the viability of cells seeded in deep portions of scaffolds/graft materials, due to hypoxia and insufficient nutrient supply. In this article we aim to review vascularization strategies employed in tissue engineering techniques to repair soft tissues. For this purpose, we start by providing a brief overview of the main events during the physiological wound healing process in soft tissues. Then, we discuss how tissue repair can be achieved through tissue engineering, and considerations with regards to the choice of scaffold materials, culture conditions, and vascularization techniques. Next, we highlight the importance of vascularization, along with strategies and methods of prevascularization of soft tissue equivalents, particularly cell-based prevascularization. Lastly, we present a summary of commonly used in vitro methods during the vascularization of tissue-engineered soft tissue constructs.
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Affiliation(s)
| | - Lobat Tayebi
- Marquette University School of Dentistry, Milwaukee, WI, USA
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Abstract
AbstractAlginate is a polysaccharide of natural origin, which shows outstanding properties of biocompatibility, gel forming ability, non-toxicity, biodegradability and easy to process. Due to these excellent properties of alginate, sodium alginate, a hydrogel form of alginate, oxidized alginate and other alginate based materials are used in various biomedical fields, especially in drug delivery, wound healing and tissue engineering. Alginate can be easily processed as the 3D scaffolding materials which includes hydrogels, microcapsules, microspheres, foams, sponges, and fibers and these alginate based bio-polymeric materials have particularly used in tissue healing, healing of bone injuries, scars, wound, cartilage repair and treatment, new bone regeneration, scaffolds for the cell growth. Alginate can be easily modified and blended by adopting some physical and chemical processes and the new alginate derivative materials obtained have new different structures, functions, and properties having improved mechanical strength, cell affinity and property of gelation. This can be attained due to combination with other different biomaterials, chemical and physical crosslinking, and immobilization of definite ligands (sugar and peptide molecules). Hence alginate, its modified forms, derivative and composite materials are found to be more attractive towards tissue engineering. This article provides a comprehensive outline of properties, structural aspects, and application in tissue engineering.
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Batur S, Ayla S, Sakul AA, Okur ME, Karadag AE, Daylan B, Ozdemir EM, Kepil N, Gunal MY. An Alternative Approach Wound Healing Field with Polypodium Vulgare. Medeni Med J 2020; 35:315-323. [PMID: 33717624 PMCID: PMC7945725 DOI: 10.5222/mmj.2020.89983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Accepted: 09/21/2020] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE In this study, we examined the effects of Polypodium vulgare L. (Polypodiaceae) as a candidate to be used for wound healing scarred area. We investigated the antibacterial, and antioxidant activity of P. Vulgare on both in vivo, and in vitro wound healing using an excisional wound model in mice. METHOD We used 32 Balb-c mice equally divided into four groups: Group 1 control, Group 2 vehicle, Group 3 Polypodium vulgare, and Group 4 Centella asiatica extract (CAE). All treatments were applied topically once in a day. The scar area, percentage wound closure and epithelization time were measured. PDGF, VEGF, and collagen immunohistochemical staining were used for evaluation. RESULTS CAE and P. vulgare extract groups were observed to be more effective than the control and vehicle groups in terms of new vascular, epidermal and granulation tissue organization. PDGF, VEGF, and collagen immunohistochemical staining was stronger in the P.vulgare extract and CAE groups compared to the control and vehicle groups. In the P. vulgare and CAE groups, PDGF staining intensity was stronger than the control and vehicle groups, but VEGF and collagen staining in P. vulgare group was not different from the control group. CONCLUSION P. vulgare had an effect on the injured area by regenerating the epidermis and increasing vascularization. P. vulgare extract with known antioxidant, and antimicrobial activities may be helpful as a supportive treatment in wound healing.
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Affiliation(s)
- Sebnem Batur
- Istanbul University-Cerrahpasa, Cerrahpasa Faculty of Medicine, Department of Pathology, Istanbul, Turkey
| | - Sule Ayla
- Istanbul Medipol University, Faculty of Medicine, Department of Histology and Embryology, Istanbul, Turkey
| | - Ayse Arzu Sakul
- Istanbul Medipol University, Faculty of Medicine, Istanbul, Department of Medical Pharmacology, Istanbul, Turkey
| | - Mehmet Evren Okur
- University of Health Sciences, Faculty of Pharmacy, Department of Pharmacology, Istanbul, Turkey
| | - Ayse Esra Karadag
- Istanbul Medipol University, Faculty of Pharmacy, Department of Pharmacognosy, Istanbul, Turkey
| | - Benay Daylan
- Istanbul Medipol University, Faculty of Medicine, Department of Histology and Embryology, Istanbul, Turkey
| | - Ekrem Musa Ozdemir
- Istanbul Medipol University, Department of Animal Facility, Istanbul, Turkey
| | - Nuray Kepil
- Istanbul University-Cerrahpasa Faculty of Medicine, Department of Pathology, Istanbul, Turkey
| | - Mehmet Yalcin Gunal
- Alanya Alaaddin Keykubat University, Faculty of Medicine, Department of Physiology, Alanya, Turkey
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Mahran HG. Comparison Of The Efficacy Of Two Laser Types In Healing Of Full-Thickness Wound: An Experimental Study. RUSSIAN OPEN MEDICAL JOURNAL 2020. [DOI: 10.15275/rusomj.2020.0418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
The aim of the study ― To investigate the effectiveness of pulsed laser with high intensity and laser with low intensity on a full-thickness wound in rats and to compare the effects of both laser types. Material and Methods ― Forty-five adult male rats were utilized in the present study. After anesthesia, wound of five cm2 was produced on dorsal aspect in each rat; then, the rats were randomly classified into three groups as follows: high power pulsating laser group (A) which received Nd: YAG laser with 1064 nm wavelength, low power laser group (B) which received GaAlAs laser with 830 nm wavelength, and control group (C) which received no treatment. Laser lights in groups (A) and (B) were introduced at an intensity of five joules per cm2 with a total energy of 25 joules for each wound area through the use of a scanning method and at a rate of 3 sessions per week for three weeks. Results ― At the end of treatment, better wound healing in form of more wound contraction and higher healing rate was elicited in both laser groups in comparison to wound healing in the control group, and there were no significantly different effects between both laser types. Conclusion ― At the intensity of five joules/cm2, both low-intensity and pulsating high-intensity lasers speed up the healing of the wound in rats, and there are no significant differences between their effects.
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Lee Y, Ricky S, Lim TH, Jang KS, Kim H, Song Y, Kim SY, Chung KS. Wound Healing Effect of Nonthermal Atmospheric Pressure Plasma Jet on a Rat Burn Wound Model: A Preliminary Study. J Burn Care Res 2020; 40:923-929. [PMID: 31299070 PMCID: PMC6797227 DOI: 10.1093/jbcr/irz120] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Worldwide, an estimated 6 million patients seek medical attention for burns annually. Various treatment methods and materials have been investigated and developed to enhance burn wound healing. Recently, a new technology, plasma medicine, has emerged to offer new solutions in wound care. As the development of plasma medicine has shown benefit in wound healing, we aimed to assess the effects of plasma medicine on burn wounds. To investigate the effectiveness of a nonthermal atmospheric pressure plasma jet (NAPPJ) for burn wound treatment on a brass comb burn wound rat model. Burn wounds were made by applying a preheated brass comb (100°C) for 2 minutes, which resulted in four full-thickness burn wounds separated by three interspaces. Interspaces were exposed to NAPPJ treatment for 2 minutes and morphological changes and neutrophil infiltration were monitored at 0, 4, and 7 days post-wounding. The percentage of necrotic interspace was higher in the control group than in the plasma-treated group (51.8 ± 20.5% vs 31.5 ± 19.0%, P < .001). Moreover, the exposure of interspace to NAPPJ greatly reduced the number of infiltrating neutrophils. In addition, the percentage of interspace that underwent full-thickness necrosis in the plasma-treated group was smaller than that in the control group (28% vs 67%). NAPPJ exposure on interspaces has a positive effect on burn wounds leading to wound healing by reducing burn injury progression.
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Affiliation(s)
- Yoonje Lee
- Department of Emergency Medicine, College of Medicine, Korea University, Seoul, Korea
| | - Sanjaya Ricky
- Department of Translational Medicine, College of Medicine, Hanyang University, Seoul, Korea
| | - Tae Ho Lim
- Department of Emergency Medicine, College of Medicine, Hanyang University, Seoul, Korea.,Convergence Technology Center for Disaster Preparedness, Hanyang University, Seoul, Korea
| | - Ki-Seok Jang
- Department of Pathology, College of Medicine, Hanyang University, Seoul, Korea
| | - Hongjung Kim
- Department of Emergency Medicine, College of Medicine, Hanyang University, Seoul, Korea
| | - Yeongtak Song
- Convergence Technology Center for Disaster Preparedness, Hanyang University, Seoul, Korea
| | - Sang-You Kim
- Department of Engineering, College of Engineering, Hanyang University, Seoul, Korea
| | - Kyu-Sun Chung
- Department of Engineering, College of Engineering, Hanyang University, Seoul, Korea
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Abianeh SH, Bajestani SM, Rahmati J, Shahrbaf MA, Shirzad N. The effect of local insulin injection on the healing process of split thickness skin graft donor site: a randomized, double-blind, placebo control clinical trial. EUROPEAN JOURNAL OF PLASTIC SURGERY 2020. [DOI: 10.1007/s00238-020-01683-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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15
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Jones BG, Sealy RE, Penkert RR, Surman SL, Maul RW, Neale G, Xu B, Gearhart PJ, Hurwitz JL. Complex sex-biased antibody responses: estrogen receptors bind estrogen response elements centered within immunoglobulin heavy chain gene enhancers. Int Immunol 2020; 31:141-156. [PMID: 30407507 DOI: 10.1093/intimm/dxy074] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2018] [Accepted: 11/02/2018] [Indexed: 01/10/2023] Open
Abstract
Nuclear hormone receptors including the estrogen receptor (ERα) and the retinoic acid receptor regulate a plethora of biological functions including reproduction, circulation and immunity. To understand how estrogen and other nuclear hormones influence antibody production, we characterized total serum antibody isotypes in female and male mice of C57BL/6J, BALB/cJ and C3H/HeJ mouse strains. Antibody levels were higher in females compared to males in all strains and there was a female preference for IgG2b production. Sex-biased patterns were influenced by vitamin levels, and by antigen specificity toward influenza virus or pneumococcus antigens. To help explain sex biases, we examined the direct effects of estrogen on immunoglobulin heavy chain sterile transcript production among purified, lipopolysaccharide-stimulated B cells. Supplemental estrogen in B-cell cultures significantly increased immunoglobulin heavy chain sterile transcripts. Chromatin immunoprecipitation analyses of activated B cells identified significant ERα binding to estrogen response elements (EREs) centered within enhancer elements of the immunoglobulin heavy chain locus, including the Eµ enhancer and hypersensitive site 1,2 (HS1,2) in the 3' regulatory region. The ERE in HS1,2 was conserved across animal species, and in humans marked a site of polymorphism associated with the estrogen-augmented autoimmune disease, lupus. Taken together, the results highlight: (i) the important targets of ERα in regulatory regions of the immunoglobulin heavy chain locus that influence antibody production, and (ii) the complexity of mechanisms by which estrogen instructs sex-biased antibody production profiles.
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Affiliation(s)
- Bart G Jones
- Department of Infectious Diseases, St. Jude Children's Research Hospital, Danny Thomas Place, Memphis, USA
| | - Robert E Sealy
- Department of Infectious Diseases, St. Jude Children's Research Hospital, Danny Thomas Place, Memphis, USA
| | - Rhiannon R Penkert
- Department of Infectious Diseases, St. Jude Children's Research Hospital, Danny Thomas Place, Memphis, USA
| | - Sherri L Surman
- Department of Infectious Diseases, St. Jude Children's Research Hospital, Danny Thomas Place, Memphis, USA
| | - Robert W Maul
- Laboratory of Molecular Biology and Immunology, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
| | - Geoff Neale
- Hartwell Center for Bioinformatics & Biotechnology, St. Jude Children's Research Hospital, Memphis, USA
| | - Beisi Xu
- Computational Biology, St. Jude Children's Research Hospital, Memphis, USA
| | - Patricia J Gearhart
- Laboratory of Molecular Biology and Immunology, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
| | - Julia L Hurwitz
- Department of Infectious Diseases, St. Jude Children's Research Hospital, Danny Thomas Place, Memphis, USA.,Department of Microbiology, Immunology and Biochemistry, University of Tennessee Health Science Center, Memphis, USA
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16
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Chua ME, Rong M, Tuba-Ang K, Silangcruz JMA, Tanseco PP, Ming JMC, Kim KH, Hui CC, Farhat WA. The impact of sex hormones on genital wound healing in mice: a comparative study. J Pediatr Urol 2019; 15:635-641. [PMID: 31629667 DOI: 10.1016/j.jpurol.2019.09.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Accepted: 09/02/2019] [Indexed: 11/30/2022]
Abstract
INTRODUCTION AND OBJECTIVE The effects estrogen and testosterone have on penile wound healing are still uncertain. This study evaluated the effects of these hormones on the wound healing process of penile and non-penile skin in wild-type (Mus musculus species) 4-5-week-old mice. METHODOLOGY Seventy wild-type Mus musculus species were randomly assigned to four groups control (n = 17), 1-week post-operative topical estrogen (n = 18), 1-week pre-operative testosterone (n = 17), and immediate post-operative testosterone (n = 18). Incisions were made on the ventrum of the penis and dorsal neck skin. On post-operative day 3, 7, and 14, incision sites were harvested. Evaluation was performed grossly for postsurgical penile edema and histologically for inflammatory cell concentration, presence of fibrinopurulent materials and distribution of collagen-fibroblastic cells. Each treatment group was compared at the three post-operative time points using the Fisher-Freeman--Halton exact test. CD34 and androgen receptor immunohistostaining was performed for between-group differences to assess microvascular density or vasodilatation and androgen receptor upregulation. RESULTS In this study, the experiment noted significant penile edema on post-operative day 7 in the testosterone groups, whereas less edema in the estrogen group (P = 0.010; Figure). On histologic evaluation of the penile wounds, a significantly increased inflammatory cell concentration was noted for both pre-operative and post-operative testosterone groups on post-operative day 14 (P = 0.023). The estrogen group revealed significantly increased fibrinopurulent material on the 3rd and 7th post-operative days (P = 0.045 and P = 0.005, respectively). No significant between-group differences in the collagen-fibroblastic distribution were noted over the three-time phases. On histologic evaluation of the skin wounds, no significant differences were noted between the groups for inflammatory cell concentration and presence of fibrinopurulent materials. However, compared with the testosterone treatment groups, a significant higher collagen-fibroblast distribution was noted in the estrogen groups on post-operative day 3 and 14 (P = 0.001 and P = 0.044, respectively). CONCLUSION Sex hormones, when given peri-operatively, may affect the wound healing process in mice. Testosterone appears to stimulate a prolonged inflammatory effect on penile wounds. Conversely, estrogen induces a fibrinopurulent congregation early in the penile wound healing process. For general skin healing, estrogen induces earlier collagen and fibroblast distribution, whereas testosterone has a delayed effect. The findings of this study should be further investigated in larger animal model with longer follow-up period.
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Affiliation(s)
- Michael E Chua
- Division of Urology, The Hospital for Sick Children, Toronto, ON, Canada; Institute of Urology, St. Luke's Medical Center, NCR, Quezon City, Philippines.
| | - Mo Rong
- Program in Developmental & Stem Cell Biology, The Hospital for Sick Children, Toronto, ON, Canada; Department of Molecular Genetics, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - Karen Tuba-Ang
- Department of Pathology, Baguio General Hospital and Medical Center, Baguio, Benguet, Philippines
| | | | - Patrick P Tanseco
- Institute of Urology, St. Luke's Medical Center, NCR, Quezon City, Philippines
| | - Jessica Megan C Ming
- Division of Urology, The Hospital for Sick Children, Toronto, ON, Canada; Division of Urology, University of New Mexico, Albuquerque, NM, USA
| | - Kyoung-Han Kim
- Program in Developmental & Stem Cell Biology, The Hospital for Sick Children, Toronto, ON, Canada; Department of Molecular Genetics, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - Chi Chung Hui
- Program in Developmental & Stem Cell Biology, The Hospital for Sick Children, Toronto, ON, Canada; Department of Molecular Genetics, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - Walid A Farhat
- Division of Urology, University of Wisconsin, Madison, WI, USA; Division of Urology, The Hospital for Sick Children, Toronto, ON, Canada
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17
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Damrose EJ, Campbell RD, Darwish S, Erickson‐DiRenzo E. Increased Expression of Estrogen Receptor Beta in Idiopathic Progressive Subglottic Stenosis. Laryngoscope 2019; 130:2186-2191. [DOI: 10.1002/lary.28364] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2019] [Revised: 08/08/2019] [Accepted: 09/25/2019] [Indexed: 12/24/2022]
Affiliation(s)
- Edward J. Damrose
- Division of Laryngology, Department of Otolaryngology/Head and Neck SurgeryStanford University Medical Center Stanford California U.S.A
| | - Ross David Campbell
- Division of Laryngology, Department of Otolaryngology/Head and Neck SurgeryStanford University Medical Center Stanford California U.S.A
| | - Sonja Darwish
- Division of Laryngology, Department of Otolaryngology/Head and Neck SurgeryStanford University Medical Center Stanford California U.S.A
| | - Elizabeth Erickson‐DiRenzo
- Division of Laryngology, Department of Otolaryngology/Head and Neck SurgeryStanford University Medical Center Stanford California U.S.A
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18
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Bhattacharya D, Ghosh B, Mukhopadhyay M. Development of nanotechnology for advancement and application in wound healing: a review. IET Nanobiotechnol 2019; 13:778-785. [PMID: 31625517 PMCID: PMC8676206 DOI: 10.1049/iet-nbt.2018.5312] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Revised: 06/03/2019] [Accepted: 06/28/2019] [Indexed: 12/21/2022] Open
Abstract
Wound healing is a series of different dynamic and complex phenomena. Many studies have been carried out based on the type and severity of wounds. However, to recover wounds faster there are no suitable drugs available, which are highly stable, less expensive as well as has no side effects. Nanomaterials have been proven to be the most promising agent for faster wound healing among all the other wound healing materials. This review briefly discusses the recent developments of wound healing by nanotechnology, their applicability and advantages. Nanomaterials have unique physicochemical, optical, and biological properties. Some of them can be directly applied for wound healing or some of them can be incorporated into scaffolds to create hydrogel matrix or nanocomposites, which promote wound healing through their antimicrobial, as well as selective anti- and pro-inflammatory, and proangiogenic properties. Owing to their high surface area to volume ratio, nanomaterials have not only been used for drug delivery vectors but also can affect wound healing by influencing collagen deposition and realignment and provide approaches for skin tissue regeneration.
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Affiliation(s)
- Debalina Bhattacharya
- Department of Biotechnology, University of Calcutta, 35, Ballygunge Circular Road, Kolkata 700019, West Bengal, India.
| | - Biva Ghosh
- Department of Biotechnology, JIS University, 81 Nilgunj Road, Kolkata 700109, West Bengal, India
| | - Mainak Mukhopadhyay
- Department of Biotechnology, JIS University, 81 Nilgunj Road, Kolkata 700109, West Bengal, India
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19
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Sha AM, Garib BT. Antibacterial Effect of Curcumin against Clinically Isolated Porphyromonas gingivalis and Connective Tissue Reactions to Curcumin Gel in the Subcutaneous Tissue of Rats. BIOMED RESEARCH INTERNATIONAL 2019; 2019:6810936. [PMID: 31687395 PMCID: PMC6794974 DOI: 10.1155/2019/6810936] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 08/13/2019] [Accepted: 08/22/2019] [Indexed: 10/26/2022]
Abstract
The aim of this study was to find the antibacterial potential of curcumin against Porphyromonas gingivalis and connective tissue responses to curcumin gel in the subcutaneous tissue of rats. The sample consisted of subgingival plaque collected from patients with chronic periodontitis. The P. gingivalis clinically isolated strain was confirmed by anaerobic culture, morphology, biochemical tests (Vitek ANC Kit), and PCR (16S rDNA). Minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) were determined by incubation of twofold serial dilution of broth media containing curcumin (from 100 to 0.05 µg/ml) for 48 h at 37°C. Fifteen adult Wistar rats (3-4 months old) were used and randomly divided into three groups (negative control, positive control, and experimental groups). Tubes were implanted on the back skin (45 tubes). Rats were euthanized at 7, 30, and 60 days after surgical processes, and then the samples were taken and processed to achieve conventional hematoxylin and eosin-stained slides. The MIC and MBC of curcumin against clinically isolated P. gingivalis were 12 µg/ml. Curcumin gel caused moderate inflammatory reactions at 7 and 30 days, while at 60 days, it caused dramatic decline and resulted in a nonsignificant response. Besides, curcumin gel stimulated quick reepithelialization, fibroblast proliferation, and scarring through the formation of thick bundles of well-organized collagen fibers. Curcumin has an effective antibacterial action against clinically isolated P. gingivalis at low concentration (12 µg/ml), and it was regarded as the biocompatible material in the subcutaneous tissues.
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Affiliation(s)
- Aram Mohammed Sha
- Department of Periodontology, College of Dentistry, University of Sulaimani, Sulaimani, Kurdistan Region, Iraq
| | - Balkees Taha Garib
- Department of Oral Pathology, College of Dentistry, University of Sulaimani, Sulaimani, Kurdistan Region, Iraq
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20
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Lee CM, Watson REB, Kleyn CE. The impact of perceived stress on skin ageing. J Eur Acad Dermatol Venereol 2019; 34:54-58. [PMID: 31407395 DOI: 10.1111/jdv.15865] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2018] [Accepted: 06/21/2019] [Indexed: 12/20/2022]
Abstract
Skin ageing can be divided according to phenotypical features into intrinsic (by the passage of time) and extrinsic (with the addition of the effects of environmental factors). Photoageing is by far the most researched factor of extrinsic ageing but the additional impact of other factors such as cigarette smoking and exposure to air pollution ought to be taken into account. One of the least researched topics in relation to extrinsic skin ageing is the impact of psychological stress. A contemporary review of response of human skin to stress describes the molecular mechanisms of extrinsic skin ageing, but has fallen short of explaining resilience to stress exhibited by people. Mechanisms to regulate gene expression, define cellular identity and promote functionality are responsible for the adaptive response to stressful events. Conversely, maladaptive response of human tissues to chronic stress appears to have an impact on gene regulation. Epigenetics is the study of heritable changes in organisms due to modifications in gene activity and expression, as opposed to the genetic code (DNA genome). Chronic stress appears to be an important factor in determining an individual's vulnerability to ageing and age-related comorbidities via epigenetic modifications. Forerunners in epigenetic research recognized the necessity of a reliable biomarker in order to develop a better understanding of the role of epigenomics in ageing. Genomic DNA methylation patterns (DNAm) appear to be valuable in age prediction but variability in specificity exists across species of mammals, human races and tissues. Neuroscience research appears to be leading the way in epigenomics whilst the lack of a valid and reliable DNAm-associated age predictor compatible with human skin tissue hinders research endeavours for the epigenetics of skin ageing.
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Affiliation(s)
- C M Lee
- Department of Dermatology, Frimley Park Hospital, Frimley, Surrey, UK
| | - R E B Watson
- Centre for Dermatology Research, The University of Manchester & Salford Royal NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK.,NIHR Manchester Biomedical Research Centre, Manchester University NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK
| | - C E Kleyn
- Centre for Dermatology Research, The University of Manchester & Salford Royal NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK.,NIHR Manchester Biomedical Research Centre, Manchester University NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK
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21
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Seydi N, Saneei S, Jalalvand AR, Zangeneh MM, Zangeneh A, Tahvilian R, Pirabbasi E. Synthesis of titanium nanoparticles using
Allium eriophyllum
Boiss aqueous extract by green synthesis method and evaluation of their remedial properties. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.5191] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Niloofar Seydi
- Department of Clinical Sciences, Faculty of Veterinary MedicineRazi University Kermanshah Iran
| | - Sania Saneei
- Department of Dermatology, School of MedicineKermanshah University of Medical Sciences Kermanshah Iran
| | - Ali R. Jalalvand
- Research Center of Oils and FatsKermanshah University of Medical Sciences Kermanshah Iran
| | - Mohammad Mahdi Zangeneh
- Department of Clinical Sciences, Faculty of Veterinary MedicineRazi University Kermanshah Iran
- Biotechnology and Medicinal Plants Research CenterIlam University of Medical Sciences Ilam Iran
| | - Akram Zangeneh
- Department of Clinical Sciences, Faculty of Veterinary MedicineRazi University Kermanshah Iran
- Biotechnology and Medicinal Plants Research CenterIlam University of Medical Sciences Ilam Iran
| | - Reza Tahvilian
- Pharmaceutical Sciences Research Center, Health InstituteKermanshah University of Medical Sciences Kermanshah Iran
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22
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Shamilov R, Aneskievich BJ. Intrinsic Disorder in Nuclear Receptor Amino Termini: From Investigational Challenge to Therapeutic Opportunity. NUCLEAR RECEPTOR RESEARCH 2019. [DOI: 10.32527/2019/101417] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Affiliation(s)
- Rambon Shamilov
- Graduate Program in Pharmacology & Toxicology, University of Connecticut, Storrs, CT 06269-3092, USA
| | - Brian J. Aneskievich
- Department of Pharmaceutical Sciences, University of Connecticut, Storrs, CT 06269-3092, USA
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23
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Samadi P, Sheykhhasan M, Khoshinani HM. The Use of Platelet-Rich Plasma in Aesthetic and Regenerative Medicine: A Comprehensive Review. Aesthetic Plast Surg 2019; 43:803-814. [PMID: 30552470 DOI: 10.1007/s00266-018-1293-9] [Citation(s) in RCA: 145] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Accepted: 11/24/2018] [Indexed: 02/08/2023]
Abstract
INTRODUCTION In recent years, platelet-rich plasma (PRP) has emerged as a promising autologous biological treatment modality for the use in aesthetic and regenerative medicine. PRP is a high concentration of platelets derived from whole blood which is isolated by centrifugation to separate and concentrate platelet-containing plasma from red blood cells. PRP comprises hundreds of bioactive proteins, including growth factors, peptides, and cytokines that stimulate healing of skin and soft tissues. Attractive features of PRP are the extended release of various growth and differentiation factors from activated platelets, tissue regenerative, and healing capabilities, as well as the lack of problems associated with immunogenicity. Because of the unique biological features of this whole blood-derived biological agent, multiple clinical uses for PRP exist for aesthetic and regenerative medicine. EVIDENCE ACQUISITIONS A comprehensive review of the literature regarding the use of platelet-rich plasma in aesthetic and regenerative medicine was performed. EVIDENCE SYNTHESIS Therapeutic applications of PRP including several methods for its clinical deployment in conditions related to aesthetic and regenerative medicine including wound healing, skin and facial rejuvenation, hair restoration, hand rejuvenation, breast augmentation, and musculoskeletal regeneration were reviewed. CONCLUSION PRP treatment has shown itself as a bright future for a safe and efficient cosmetic intervention. However, more studies are needed to better our understanding of limitations and benefits in clinical phases associated with the aesthetic use of PRP. LEVEL OF EVIDENCE III This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .
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Affiliation(s)
- Pouria Samadi
- Department of Molecular Medicine and Genetics, Research Center for Molecular Medicine, Faculty of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Mohsen Sheykhhasan
- Department of Molecular Medicine and Genetics, Research Center for Molecular Medicine, Faculty of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran.
- Department of Mesenchymal Stem Cell, The Academic Center for Education, Culture and Research, Qom Branch, Qom, Iran.
| | - Hamed Manoochehri Khoshinani
- Department of Molecular Medicine and Genetics, Research Center for Molecular Medicine, Faculty of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
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24
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Abstract
Scientific and commercial interest of probiotics, prebiotics and their effect on human health and disease has increased in the last decade. The aim of this review article is to evaluate the role of pro- and prebiotics on the normal function of healthy skin as well as their role in the prevention and therapy of skin disease. Lactobacilli and Bifidobacterium are the most commonly used probiotics and thought to mediate skin inflammation, treat atopic dermatitis (AD) and prevent allergic contact dermatitis (ACD). Probiotics are shown to decolonise skin pathogens (e.g., P. aeruginosa, S. aureus, A. Vulgaris, etc.) while kefir is also shown to support the immunity of the skin and treat skin pathogens through the production of antimicrobial substances and prebiotics. Finally, prebiotics (e.g., Fructo-oligosaccharides, galacto-oligosaccharides and konjac glucomannan hydrolysates) can contribute to the treatment of diseases including ACD, acne and photo aging primarily by enhancing the growth of probiotics.
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25
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Sealy RE, Jones BG, Surman SL, Penkert RR, Pelletier S, Neale G, Hurwitz JL. Will Attention by Vaccine Developers to the Host's Nuclear Hormone Levels and Immunocompetence Improve Vaccine Success? Vaccines (Basel) 2019; 7:vaccines7010026. [PMID: 30818795 PMCID: PMC6466149 DOI: 10.3390/vaccines7010026] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 02/16/2019] [Accepted: 02/21/2019] [Indexed: 01/18/2023] Open
Abstract
Despite extraordinary advances in fields of immunology and infectious diseases, vaccine development remains a challenge. The development of a respiratory syncytial virus vaccine, for example, has spanned more than 50 years of research with studies of more than 100 vaccine candidates. Dozens of attractive vaccine products have entered clinical trials, but none have completed the path to licensing. Human immunodeficiency virus vaccine development has proven equally difficult, as there is no licensed product after more than 30 years of pre-clinical and clinical research. Here, we examine vaccine development with attention to the host. We discuss how nuclear hormones, including vitamins and sex hormones, can influence responses to vaccines. We show how nuclear hormones interact with regulatory elements of immunoglobulin gene loci and how the deletion of estrogen response elements from gene enhancers will alter patterns of antibody isotype expression. Based on these findings, and findings that nuclear hormone levels are often insufficient or deficient among individuals in both developed and developing countries, we suggest that failed vaccine studies may in some cases reflect weaknesses of the host rather than the product. We encourage analyses of nuclear hormone levels and immunocompetence among study participants in clinical trials to ensure the success of future vaccine programs.
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Affiliation(s)
- Robert E Sealy
- Department of Infectious Diseases, St. Jude Children's Research Hospital, Memphis, TN 38105, USA.
| | - Bart G Jones
- Department of Infectious Diseases, St. Jude Children's Research Hospital, Memphis, TN 38105, USA.
| | - Sherri L Surman
- Department of Infectious Diseases, St. Jude Children's Research Hospital, Memphis, TN 38105, USA.
| | - Rhiannon R Penkert
- Department of Infectious Diseases, St. Jude Children's Research Hospital, Memphis, TN 38105, USA.
| | - Stephane Pelletier
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA.
| | - Geoff Neale
- The Hartwell Center for Bioinformatics & Biotechnology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA.
| | - Julia L Hurwitz
- Department of Infectious Diseases, St. Jude Children's Research Hospital, Memphis, TN 38105, USA.
- Department of Microbiology, Immunology and Biochemistry, University of Tennessee Health Science Center, Memphis, TN 38163, USA.
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26
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Zhou C, Huang Z, Huang Y, Wang B, Yang P, Fan Y, Hou A, Yang B, Zhao Z, Quan G, Pan X, Wu C. In situ gelation of rhEGF-containing liquid crystalline precursor with good cargo stability and system mechanical properties: a novel delivery system for chronic wounds treatment. Biomater Sci 2019; 7:995-1010. [PMID: 30603758 DOI: 10.1039/c8bm01196f] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/25/2024]
Abstract
The objective of this study was to develop a novel delivery system for recombinant human epidermal growth factor (rhEGF) for chronic wound treatment. Such a delivery system should be of good cargo stability and system mechanical properties in order to guarantee a satisfactory wound-healing effect. rhEGF-containing lyotropic liquid crystalline precursors (rhEGF-LLCPs) with in situ gelation capability were considered as a promising candidate to achieve this aim. Various properties of the optimal formulations (rhEGF-LLCP1 and rhEGF-LLCP2) were characterized, including apparent viscosity, gelation time, in vitro release and phase behavior. The stability of rhEGF and system mechanical properties (i.e. mechanical rigidity and bioadhesive force) were verified. Interestingly, rhEGF-LLCP2 with a larger internal water channel diameter exhibited faster release rate in vitro and then better bioactivity in Balb/c 3T3 and HaCaT cell models. Moreover, rhEGF-LLCP2 showed distinct promotion effects on wound closure, inflammatory recovery and re-epithelization process in Sprague-Dawley rat models. In conclusion, rhEGF-LLCP emerged as a prospective candidate to preserve the stability and enhance the wound-healing effect of rhEGF, which might serve as a new delivery system for chronic wound therapies.
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Affiliation(s)
- Chan Zhou
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, Guangdong, P. R. China.
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Khammissa RAG, Ballyram R, Jadwat Y, Fourie J, Lemmer J, Feller L. Vitamin D Deficiency as It Relates to Oral Immunity and Chronic Periodontitis. Int J Dent 2018; 2018:7315797. [PMID: 30364037 PMCID: PMC6188726 DOI: 10.1155/2018/7315797] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Accepted: 08/12/2018] [Indexed: 11/17/2022] Open
Abstract
The biologically active form of vitamin D, 1,25 dihydroxyvitamin D (1,25(OH)2D) and its receptor, the vitamin D receptor (VDR), play roles in maintaining oral immunity and the integrity of the periodontium. Results of observational cross-sectional clinical studies investigating the association between vitamin D serum level and the incidence and severity of chronic periodontitis indicate that, perhaps owing to the immunomodulatory, anti-inflammatory, and antibacterial properties of 1,25(OH)2 D/VDR signalling, a sufficient serum level of vitamin D is necessary for the maintenance of periodontal health. In cases of established chronic periodontitis, vitamin D supplementation is associated with reduction in the severity of periodontitis. As cross-sectional studies provide only weak evidence for any causal association and therefore are of questionable value, either longitudinal cohort studies, case controlled studies, or randomized control trials are needed to determine whether or not deficiency of vitamin D is a risk factor for chronic periodontitis, and whether or not vitamin D supplementation adjunctive to standard periodontal treatment is in any way beneficial. In this article, we discuss the relationship between vitamin D, oral immunity and periodontal disease and review the rationale for using vitamin D supplementation to help maintain periodontal health and as an adjunct to standard periodontal treatment.
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Affiliation(s)
- R. A. G. Khammissa
- Department of Periodontology and Oral Medicine, Sefako Makgatho Health Sciences University, Medunsa 0204, South Africa
| | - R. Ballyram
- Department of Periodontology and Oral Medicine, Sefako Makgatho Health Sciences University, Medunsa 0204, South Africa
| | - Y. Jadwat
- Department of Periodontology and Oral Medicine, Sefako Makgatho Health Sciences University, Medunsa 0204, South Africa
| | - J. Fourie
- Department of Periodontology and Oral Medicine, Sefako Makgatho Health Sciences University, Medunsa 0204, South Africa
| | - J. Lemmer
- Department of Periodontology and Oral Medicine, Sefako Makgatho Health Sciences University, Medunsa 0204, South Africa
| | - L. Feller
- Department of Periodontology and Oral Medicine, Sefako Makgatho Health Sciences University, Medunsa 0204, South Africa
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Fang Y, Hu J, Wang Z, Zong H, Zhang L, Zhang R, Sun L. LncRNA H19 functions as an Aquaporin 1 competitive endogenous RNA to regulate microRNA-874 expression in LPS sepsis. Biomed Pharmacother 2018; 105:1183-1191. [DOI: 10.1016/j.biopha.2018.06.007] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Revised: 05/31/2018] [Accepted: 06/02/2018] [Indexed: 01/01/2023] Open
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29
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Khammissa RAG, Fourie J, Motswaledi MH, Ballyram R, Lemmer J, Feller L. The Biological Activities of Vitamin D and Its Receptor in Relation to Calcium and Bone Homeostasis, Cancer, Immune and Cardiovascular Systems, Skin Biology, and Oral Health. BIOMED RESEARCH INTERNATIONAL 2018; 2018:9276380. [PMID: 29951549 PMCID: PMC5987305 DOI: 10.1155/2018/9276380] [Citation(s) in RCA: 87] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Revised: 03/13/2018] [Accepted: 04/16/2018] [Indexed: 01/15/2023]
Abstract
Vitamin D plays an important role in calcium homeostasis and bone metabolism, with the capacity to modulate innate and adaptive immune function, cardiovascular function, and proliferation and differentiation of both normal and malignant keratinocytes. 1,25(OH)2D, the biologically active form of vitamin D, exerts most of its functions through the almost universally distributed nuclear vitamin D receptor (VDR). Upon stimulation by 1,25(OH)2D, VDR forms a heterodimer with the retinoid X receptor (RXR). In turn, VDR/RXR binds to DNA sequences termed vitamin D response elements in target genes, regulating gene transcription. In order to exert its biological effects, VDR signalling interacts with other intracellular signalling pathways. In some cases 1,25(OH)2D exerts its biological effects without regulating either gene expression or protein synthesis. Although the regulatory role of vitamin D in many biological processes is well documented, there is not enough evidence to support the therapeutic use of vitamin D supplementation in the prevention or treatment of infectious, immunoinflammatory, or hyperproliferative disorders. In this review we highlight the effects of 1,25(OH)2D on bone and calcium homeostasis, on cancer, and refer to its effects on the cardiovascular and immune systems.
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Affiliation(s)
- R. A. G. Khammissa
- Department of Periodontology and Oral medicine, Sefako Makgatho Health Sciences University, Medunsa, Pretoria, 0204, South Africa
| | - J. Fourie
- Department of Periodontology and Oral medicine, Sefako Makgatho Health Sciences University, Medunsa, Pretoria, 0204, South Africa
| | - M. H. Motswaledi
- Department of Dermatology, Faculty of Health Sciences, Sefako Makgatho Health Sciences University, Medunsa, 0204 Pretoria, South Africa
| | - R. Ballyram
- Department of Periodontology and Oral medicine, Sefako Makgatho Health Sciences University, Medunsa, Pretoria, 0204, South Africa
| | - J. Lemmer
- Department of Periodontology and Oral medicine, Sefako Makgatho Health Sciences University, Medunsa, Pretoria, 0204, South Africa
| | - L. Feller
- Department of Periodontology and Oral medicine, Sefako Makgatho Health Sciences University, Medunsa, Pretoria, 0204, South Africa
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Park YR, Sultan MT, Park HJ, Lee JM, Ju HW, Lee OJ, Lee DJ, Kaplan DL, Park CH. NF-κB signaling is key in the wound healing processes of silk fibroin. Acta Biomater 2018; 67:183-195. [PMID: 29242162 DOI: 10.1016/j.actbio.2017.12.006] [Citation(s) in RCA: 123] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Revised: 11/27/2017] [Accepted: 12/04/2017] [Indexed: 11/16/2022]
Abstract
Silk fibroin (SF) is a well-studied biomaterial for tissue engineering applications including wound healing. However, the signaling mechanisms underlying the impact of SF on this phenomenon have not been determined. In this study, through microarray analysis, regulatory genes of NF-ĸB signaling were activated in SF-treated NIH3T3 cells along with other genes. Immunoblot analysis confirmed the activation of the NF-ĸB signaling pathway as SF induced protein expression levels of IKKα, IKKβ, p65, and the degradation of IκBα. The treatment of NIH3T3 cells with SF also increased the expression of cyclin D1, vimentin, fibronectin, and vascular endothelial growth factor (VEGF). The expression of these factors by SF treatment was abrogated when NF-ĸB was inhibited by a pharmacological inhibitor Bay 11-7082. Knockdown of NF-ĸB using siRNA of IKKα and IKKβ also inhibited the SF-induced wound healing response of the NIH3T3 cells in a wound scratch assay. Collectively, these results indicated that SF-induced wound healing through the canonical NF-κB signaling pathway via regulation of the expression of cyclin D1, vimentin, fibronectin, and VEGF by NIH3T3 cells. Using an in vivo study with a partial-thickness excision wound in rats we demonstrated that SF-induced wound healing via NF-κB regulated proteins including cyclin D1, fibronectin, and VEGF. The in vitro and in vivo data suggested that SF induced wound healing via modulation of NF-ĸB signaling regulated proteins. STATEMENT OF SIGNIFICANCE Silk fibroin has been effectively used as a dressing for wound treatment for more than a century. However, mechanistic insight into the basis for wound healing via silk fibroin has not been elucidated. Here we report a key mechanism involved in silk fibroin induced wound healing both in vitro and in vivo. Using genetic- and protein-level analyses, NF-κB signaling was found to regulate silk fibroin-induced wound healing by modulating target proteins. Thus, the NF-κB signaling pathway may be utilized as a therapeutic target during the formulation of silk fibroin-based biomaterials for wound healing and tissue engineering.
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Affiliation(s)
- Ye Ri Park
- Nano-Bio Regenerative Medical Institute, College of Medicine, Hallym University, Chuncheon 200-702, South Korea
| | - Md Tipu Sultan
- Nano-Bio Regenerative Medical Institute, College of Medicine, Hallym University, Chuncheon 200-702, South Korea
| | - Hyun Jung Park
- Nano-Bio Regenerative Medical Institute, College of Medicine, Hallym University, Chuncheon 200-702, South Korea
| | - Jung Min Lee
- Nano-Bio Regenerative Medical Institute, College of Medicine, Hallym University, Chuncheon 200-702, South Korea
| | - Hyung Woo Ju
- Nano-Bio Regenerative Medical Institute, College of Medicine, Hallym University, Chuncheon 200-702, South Korea
| | - Ok Joo Lee
- Nano-Bio Regenerative Medical Institute, College of Medicine, Hallym University, Chuncheon 200-702, South Korea
| | - Dong Jin Lee
- Department of Otolaryngology-Head and Neck Surgery, Ilsong Memorial Institute of Head and Neck Cancer, Hallym University College of Medicine, 150 Seongan-ro, Gangdong-gu, Seoul, South Korea
| | - David L Kaplan
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA 02155, USA
| | - Chan Hum Park
- Nano-Bio Regenerative Medical Institute, College of Medicine, Hallym University, Chuncheon 200-702, South Korea; Department of Otorhinolaryngology-Head and Neck Surgery, Chuncheon Sacred Heart Hospital, School of Medicine, Hallym University, Chuncheon 200-702, South Korea.
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Bice BD, Stephens MR, Georges SJ, Venancio AR, Bermant PC, Warncke AV, Affolter KE, Hidalgo JR, Angus-Hill ML. Environmental Enrichment Induces Pericyte and IgA-Dependent Wound Repair and Lifespan Extension in a Colon Tumor Model. Cell Rep 2018; 19:760-773. [PMID: 28445727 DOI: 10.1016/j.celrep.2017.04.006] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Revised: 03/06/2017] [Accepted: 04/01/2017] [Indexed: 02/08/2023] Open
Abstract
Environmental enrichment (EE) replicates mind-body therapy by providing complex housing to laboratory animals to improve their activity levels, behavior, and social interactions. Using a Tcf4Het/+ApcMin/+-mediated model of colon tumorigenesis, we found that EE vastly improved the survival of tumor-bearing animals, with differential effect on tumor load in male compared to female animals. Analysis of Tcf4Het/+ApcMin/+ males showed drastically reduced expression of circulating inflammatory cytokines and induced nuclear hormone receptor (NHR) signaling, both of which are common in the wound repair process. Interestingly, EE provoked tumor wound repair resolution through revascularization, plasma cell recruitment and IgA secretion, replacement of glandular tumor structures with pericytes in a process reminiscent of scarring, and normalization of microbiota. These EE-dependent changes likely underlie the profound improvement in survival of colon-tumor-bearing Tcf4Het/+ApcMin/+ males. Our studies highlight the exciting promise of EE in the design of future therapeutic strategies for colon cancer patients.
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Affiliation(s)
- Benjamin D Bice
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Internal Medicine, Huntsman Cancer Institute, University of Utah, Salt Lake City, UT 84132, USA
| | - Megan R Stephens
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Internal Medicine, Huntsman Cancer Institute, University of Utah, Salt Lake City, UT 84132, USA
| | - Stephanie J Georges
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Internal Medicine, Huntsman Cancer Institute, University of Utah, Salt Lake City, UT 84132, USA
| | - Ashlee R Venancio
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Internal Medicine, Huntsman Cancer Institute, University of Utah, Salt Lake City, UT 84132, USA
| | - Peter C Bermant
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Internal Medicine, Huntsman Cancer Institute, University of Utah, Salt Lake City, UT 84132, USA
| | - Annika V Warncke
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Internal Medicine, Huntsman Cancer Institute, University of Utah, Salt Lake City, UT 84132, USA
| | - Kajsa E Affolter
- Department of Pathology, University of Utah, Salt Lake City, UT 84112, USA
| | - Julio R Hidalgo
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Internal Medicine, Huntsman Cancer Institute, University of Utah, Salt Lake City, UT 84132, USA
| | - Melinda L Angus-Hill
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Internal Medicine, Huntsman Cancer Institute, University of Utah, Salt Lake City, UT 84132, USA.
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Kim TH, Jung Y, Kim SH. Nanofibrous Electrospun Heart Decellularized Extracellular Matrix-Based Hybrid Scaffold as Wound Dressing for Reducing Scarring in Wound Healing. Tissue Eng Part A 2018; 24:830-848. [PMID: 29048241 DOI: 10.1089/ten.tea.2017.0318] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Produced through electrospinning, poly(l-lactide-co-caprolactone) (PLCL) membranes, which have a porous structure and are biodegradable, are of interest in various medical fields. The porous-structured electrospun membrane is particularly interesting because of several favorable properties as follows: it exudes fluid from the wound, does not build up under the wound covering, and does not cause wound desiccation. Moreover, extracellular matrix (ECM)-based structures derived by tissue decellularization have application as engineered tissue scaffolds and as supports for cellular regeneration. In particular, heart decellularized ECM (hdECM) has various pro-angiogenic factors that can induce angiogenesis for wound healing. In this regard, a nanofibrous electrospun hdECM-based hybrid scaffold (NEhdHS), which is a PLCL membrane, including hdECM as an active agent, was tested as a wound dressing to assess its fundamental biochemical and physical features in wound healing. Use of NEhdHS with its porous structure and pro-angiogenic factors is expected to provide an effective wound dressing and reduced scarring. We first demonstrate the effectiveness of a proposed decellularization protocol through analysis of dECM components and describe the mechanical properties of the fabricated NEhdHS. Next, we present an in vitro angiogenesis analysis of the NEhdHS, using a coculture system with human dermal fibroblasts and human umbilical vein endothelial cells; the results of which confirm its biocompatibility and show that the NEhdHS can significantly enhance angiogenesis over that obtained from PLCL or gelatin-containing PLCL scaffolds. We also studied the effectiveness of the NEhdHS in vivo. Using a rat excisional wound-splinting model, we show that covering the upper part of the wound with NEhdHS significantly reduces scarring in the wound healing process compared to that with PLCL or gelatin-containing PLCL scaffolds. Based upon its properties, we conclude that the NEhdHS has potential for application in wound dressing.
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Affiliation(s)
- Tae Hee Kim
- 1 Biomaterials Research Center, Korea Institute of Science and Technology , Seoul, Republic of Korea.,2 KU-KIST Graduate School of Converging Science and Technology, Korea University , Seoul, Republic of Korea
| | - Youngmee Jung
- 1 Biomaterials Research Center, Korea Institute of Science and Technology , Seoul, Republic of Korea.,3 Department of Biomedical Engineering, Korea University of Science and Technology , Seoul, Republic of Korea
| | - Soo Hyun Kim
- 1 Biomaterials Research Center, Korea Institute of Science and Technology , Seoul, Republic of Korea.,2 KU-KIST Graduate School of Converging Science and Technology, Korea University , Seoul, Republic of Korea.,3 Department of Biomedical Engineering, Korea University of Science and Technology , Seoul, Republic of Korea
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Yang J, Kim KH, Song YJ, Kim SC, Sung N, Kim H, Lee DH. Cosmetic outcomes of cesarean section scar; subcuticular suture versus intradermal buried suture. Obstet Gynecol Sci 2018; 61:79-87. [PMID: 29372153 PMCID: PMC5780325 DOI: 10.5468/ogs.2018.61.1.79] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Revised: 08/10/2017] [Accepted: 08/22/2017] [Indexed: 11/12/2022] Open
Abstract
OBJECTIVE The objective of the study was to compare cosmetic outcomes and overall satisfaction rate of cesarean section scar between conventional subcuticular suture and intradermal buried vertical mattress. METHODS Patients were enrolled to the study by chart review. A scar assessment was obtained retrospectively through a telephone survey. The patient component of the patient and observer scar assessment scale (POSAS) was utilized along with the overall satisfaction of the patient regarding their cesarean section scar and their willingness to choose the same skin closure technique when anticipating their next cesarean section. RESULTS A total of 303 cases of cesarean section was recruited, 102 finished telephone surveys were calculated for the analyses. Subcuticular suture was regarded as control group (n=52) and intradermal buried suture as test group (n=50). The PSAS score of the test group (mean, 21.8) was lower than that of the control group (mean, 28), with a statistical significance (P=0.02). Overall satisfaction rate did not differ between the two groups. Two parameters of the PSAS score and the level of overall satisfaction showed significant correlation (Pearson's r, -0.63; P<0.01). CONCLUSION We suggested the use of intradermal buried vertical mattress as a cosmetically superior skin closure method for application in cesarean sections over subcuticular stitch.
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Affiliation(s)
- Juseok Yang
- Department of Obstetrics and Gynecology, Pusan National University Yangsan Hospital, Yangsan, Korea
| | - Ki Hyung Kim
- Department of Obstetrics and Gynecology, Pusan National University Hospital, Busan, Korea
| | - Yong Jung Song
- Department of Obstetrics and Gynecology, Pusan National University Yangsan Hospital, Yangsan, Korea
| | - Seung-Chul Kim
- Department of Obstetrics and Gynecology, Pusan National University Hospital, Busan, Korea
| | - Nayoung Sung
- Department of Obstetrics and Gynecology, Pusan National University Yangsan Hospital, Yangsan, Korea
| | - Haneul Kim
- Department of Obstetrics and Gynecology, Pusan National University Yangsan Hospital, Yangsan, Korea
| | - Dong Hyung Lee
- Department of Obstetrics and Gynecology, Pusan National University Yangsan Hospital, Yangsan, Korea
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Targeting nuclear receptors in cancer-associated fibroblasts as concurrent therapy to inhibit development of chemoresistant tumors. Oncogene 2017; 37:160-173. [PMID: 28892046 PMCID: PMC5770601 DOI: 10.1038/onc.2017.319] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Revised: 07/29/2017] [Accepted: 08/06/2017] [Indexed: 12/11/2022]
Abstract
Most anticancer therapies to date focus on druggable features of tumor epithelia. Despite the increasing repertoire of treatment options, patient responses remain varied. Moreover, tumor resistance and relapse remain persistent clinical challenges. These observations imply an incomplete understanding of tumor heterogeneity. The tumor microenvironment is a major determinant of disease progression and therapy outcome. Cancer-associated fibroblasts (CAFs) are the dominant cell type within the reactive stroma of tumors. They orchestrate paracrine pro-tumorigenic signaling with adjacent tumor cells, thus exacerbating the hallmarks of cancer and accelerating tumor malignancy. Although CAF-derived soluble factors have been investigated for tumor stroma-directed therapy, the underlying transcriptional programs that enable the oncogenic functions of CAFs remain poorly understood. Nuclear receptors (NRs), a large family of ligand-responsive transcription factors, are pharmacologically viable targets for the suppression of CAF-facilitated oncogenesis. In this study, we defined the expression profiles of NRs in CAFs from clinical cutaneous squamous cell carcinoma (SCC) biopsies. We further identified a cluster of driver NRs in CAFs as important modifiers of CAF function with profound influence on cancer cell invasiveness, proliferation, drug resistance, energy metabolism and oxidative stress status. Importantly, guided by the NR profile of CAFs, retinoic acid receptor β and androgen receptor antagonists were identified for concurrent therapy with cisplatin, resulting in the inhibition of chemoresistance in recurred SCC:CAF xenografts. Our work demonstrates that treatments targeting both the tumor epithelia and the surrounding CAFs can extend the efficacy of conventional chemotherapy.
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Stolzenburg-Veeser L, Golubnitschaja O. Mini-encyclopaedia of the wound healing - Opportunities for integrating multi-omic approaches into medical practice. J Proteomics 2017; 188:71-84. [PMID: 28757465 DOI: 10.1016/j.jprot.2017.07.017] [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: 05/17/2017] [Revised: 07/25/2017] [Accepted: 07/25/2017] [Indexed: 12/12/2022]
Abstract
Wound healing is a highly complex life-important repair process triggered by plenty of local and/or systemic organ and tissue damaging events, such as an acute surgical invasion, accidental organ and tissue damages, acute and chronic diseases, aggressive local and systemic therapeutic approaches (e.g. irradiation and systemic chemotherapy). Individual health condition determines over the quality of wound healing. Impaired wound healing, in turn, may lead, for example, to post-surgical complications frequently observed in elderly, chronic ulcers in diabetic patients, hindered and ineffective pain management, etc. However, these well-acknowledged examples are just the tip of the iceberg. The entire spectrum of potential consequences is much broader. Therefore, all the aspects of wound healing need to receive a dedicated attention of many specialised medical fields and healthcare as a whole. In contrast, there is still strongly limited knowledge collected regarding the molecular and cellular mechanisms underlying the physiological versus impaired wound healing. The contents of this article might be of great importance for multi-professional considerations as well as for the experts working in specific fields such as clinical proteomics, general practice, laboratory medicine, surgery including plastic surgery and aesthetic medicine, gerontology, psychology, diabetology, endocrinology, oncology, cardiovascular disease, radiology, and healthcare economy. SIGNIFICANCE The contents of this article are strongly motivated by the particular value of wound healing quality for medical care and might be of great importance for multi-professional considerations and experts working in specialised fields: predictive and preventive medicine, general practitioners, laboratory medicine, surgery including plastic surgery and aesthetic medicine, gerontology, psychology, diabetology, endocrinology, oncology, cardiovascular disease, radiology, and healthcare economy. The article is aiming at both educational and scientific purposes: on one side it summarises comprehensive information available regarding wound healing mechanisms and molecular pathways involved. On the other side the article provides highly innovative hypotheses for multi-professional considerations relevant for several research fields which may potentially advance medical services in the close future such as clinical proteomics and multi-omics.
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Affiliation(s)
| | - Olga Golubnitschaja
- Radiological Clinic, Rheinische Friedrich-Wilhelms-Universität Bonn, Bonn, Germany; Breast Cancer Research Centre, Rheinische Friedrich-Wilhelms-Universität Bonn, Bonn, Germany; Centre for Integrated Oncology, Cologne-Bonn, Rheinische Friedrich-Wilhelms-Universität Bonn, Bonn, Germany.
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36
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Oda Y, Hu L, Nguyen T, Fong C, Tu CL, Bikle DD. Combined Deletion of the Vitamin D Receptor and Calcium-Sensing Receptor Delays Wound Re-epithelialization. Endocrinology 2017; 158:1929-1938. [PMID: 28368538 PMCID: PMC5460927 DOI: 10.1210/en.2017-00061] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Accepted: 03/08/2017] [Indexed: 12/28/2022]
Abstract
When the skin is injured, keratinocytes proliferate, migrate, and differentiate to regenerate the epidermis. We recently showed that ablation of the vitamin D receptor (Vdr) in keratinocytes delays wound re-epithelialization in mice also fed a low-calcium diet, implicating a cooperative role of Vdr and calcium signaling in this process. In this study, we examined the role of vitamin D and calcium signaling in wound healing by deleting their receptors, Vdr and the calcium-sensing receptor (Casr). Gene expression profiling of neonatal epidermis lacking both Vdr and Casr [Vdr and Casr double knockout (DKO)] specifically in keratinocytes revealed that DKO affects a number of pathways relevant to wound healing, including Vdr, β-catenin, and adherens junction (AJ) signaling. In adult skin, DKO caused a significant delay in wound closure and re-epithelialization, whereas myofibroblast numbers and matrix deposition were unaffected. The injury-induced proliferation of epidermal keratinocytes was blunted in both epidermis and hair follicles, and expression of β-catenin target genes was reduced in the DKO. Expression of E-cadherin and desmoglein 1 was reduced in the shortened leading edges of the epithelial tongues re-epithelializing the wounds, consistent with the decreased migration rate of DKO keratinocytes in vitro. These results demonstrate that Vdr and Casr are required for β-catenin-regulated cell proliferation and AJ formation essential for re-epithelialization after wounding. We conclude that vitamin D and calcium signaling in keratinocytes are required for a normal regenerative response of the skin to wounding.
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Affiliation(s)
- Yuko Oda
- Department of Medicine, University of California San Francisco, San Francisco, California 94158
- Department of Dermatology, University of California San Francisco, San Francisco, California 94158
| | - Lizhi Hu
- Department of Medicine, University of California San Francisco, San Francisco, California 94158
- School of Basic Medical Sciences, Tianjin Medical University, Tianjin 300070, China
| | - Thai Nguyen
- San Francisco Veterans Affairs Medical Center, San Francisco, California 94158
| | - Chak Fong
- San Francisco Veterans Affairs Medical Center, San Francisco, California 94158
| | - Chia-ling Tu
- San Francisco Veterans Affairs Medical Center, San Francisco, California 94158
| | - Daniel D. Bikle
- San Francisco Veterans Affairs Medical Center, San Francisco, California 94158
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Jin KW, Ro JW, Shin YJ, Hyon JY, Wee WR, Park SG. Correlation of vitamin D levels with tear film stability and secretion in patients with dry eye syndrome. Acta Ophthalmol 2017; 95:e230-e235. [PMID: 27874256 DOI: 10.1111/aos.13241] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2016] [Accepted: 07/29/2016] [Indexed: 12/26/2022]
Abstract
PURPOSE To investigate tear film stability and secretion according to serum 25-hydroxyvitamin D3 [25(OH)D] levels in dry eye patients. METHODS In this retrospective observational study, the medical charts of 92 patients who visited the Department of Ophthalmology at Hallym University Kangnam Sacred Heart Hospital from April to August 2015 were reviewed. Serum 25(OH)D levels were measured. Subjects were divided into three groups according to serum 25(OH)D levels: sufficient, inadequate or deficient group. Eye discomfort was measured by ocular surface disease index (OSDI). Tear break-up time (TBUT), fluorescein staining score and Schirmer's tear secretion test were measured. RESULTS The mean age was 53.38 ± 13.69 years. Mean serum 25(OH)D level was 14.41 ± 5.98 ng/ml. Tear break-up time (TBUT) and tear secretion were positively correlated with serum 25(OH)D levels (r = 0.389, p = 0.001; and r = 0.428, p < 0.001, Pearson correlation test). Tear break-up time (TBUT) and tear secretion were shorter in the vitamin D-deficient group compared to the sufficient group (p = 0.022 and p = 0.004). Fluorescein staining scores and OSDI scores were not different between the three groups. CONCLUSION Tear break-up time (TBUT) and secretion were correlated with serum vitamin D levels. Vitamin D status may be an important factor for dry eye syndrome.
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Affiliation(s)
- Ki Won Jin
- Department of Ophthalmology; Hallym University College of Medicine; Seoul Korea
| | - Jin Woo Ro
- Department of Ophthalmology; Hallym University College of Medicine; Seoul Korea
| | - Young Joo Shin
- Department of Ophthalmology; Hallym University College of Medicine; Seoul Korea
| | - Joon Young Hyon
- Department of Ophthalmology; Seoul National University Bundang Hospital; Seongnam Gyeonggi Korea
- Department of Ophthalmology; Seoul National University College of Medicine; Seoul Korea
| | - Won Ryang Wee
- Department of Ophthalmology; Seoul National University College of Medicine; Seoul Korea
| | - Shin Goo Park
- Department of Occupational and Environmental Medicine; Inha University School of Medicine; Incheon Korea
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Oshio T, Komine M, Tsuda H, Tominaga SI, Saito H, Nakae S, Ohtsuki M. Nuclear expression of IL-33 in epidermal keratinocytes promotes wound healing in mice. J Dermatol Sci 2017; 85:106-114. [DOI: 10.1016/j.jdermsci.2016.10.008] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2016] [Revised: 10/09/2016] [Accepted: 10/17/2016] [Indexed: 12/20/2022]
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Lisse TS, Rieger S. IKKα regulates human keratinocyte migration through surveillance of the redox environment. J Cell Sci 2017; 130:975-988. [PMID: 28122935 PMCID: PMC5358334 DOI: 10.1242/jcs.197343] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Accepted: 01/16/2017] [Indexed: 02/06/2023] Open
Abstract
Although the functions of H2O2 in epidermal wound repair are conserved throughout evolution, the underlying signaling mechanisms are largely unknown. In this study we used human keratinocytes (HEK001) to investigate H2O2-dependent wound repair mechanisms. Scratch wounding led to H2O2 production in two or three cell layers at the wound margin within ∼30 min and subsequent cysteine modification of proteins via sulfenylation. Intriguingly, exogenous H2O2 treatment resulted in preferential sulfenylation of keratinocytes that adopted a migratory phenotype and detached from neighboring cells, suggesting that one of the primary functions of H2O2 is to stimulate signaling factors involved in cell migration. Based on previous findings that revealed epidermal growth factor receptor (EGFR) involvement in H2O2-dependent cell migration, we analyzed oxidation of a candidate upstream target, the inhibitor of κB kinase α (IKKα; encoded by CHUK), as a mechanism of action. We show that IKKα is sulfenylated at a conserved cysteine residue in the kinase domain, which correlates with de-repression of EGF promoter activity and increased EGF expression. Thus, this indicates that IKKα promotes migration through dynamic interactions with the EGF promoter depending on the redox state within cells. Summary: This study provides a newly identified mechanism by which H2O2-dependent oxidation of the inhibitor of κB kinase α and de-repression of epidermal growth factor promoter activity stimulates keratinocyte migration.
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Affiliation(s)
- Thomas S Lisse
- Davis Center for Regenerative Biology and Medicine, MDI Biological Laboratory, 159 Old Bar Harbor Road, Salisbury Cove, ME 04672, USA .,The Jackson Laboratory, Bar Harbor, ME 04609, USA
| | - Sandra Rieger
- Davis Center for Regenerative Biology and Medicine, MDI Biological Laboratory, 159 Old Bar Harbor Road, Salisbury Cove, ME 04672, USA
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Ghlissi Z, Kallel R, Sila A, Harrabi B, Atheymen R, Zeghal K, Bougatef A, Sahnoun Z. Globularia alypum methanolic extract improves burn wound healing process and inflammation in rats and possesses antibacterial and antioxidant activities. Biomed Pharmacother 2016; 84:1488-1495. [PMID: 27876335 DOI: 10.1016/j.biopha.2016.11.051] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Revised: 11/10/2016] [Accepted: 11/11/2016] [Indexed: 12/13/2022] Open
Abstract
Burns are known as one of the most common and destructive forms of injury with a vast spectrum of consequences. Despite the discovery of various antibacterial and antiseptic agents, burn wound healing still has remained a challenge to modern medicine. Plants have been considered as potential agents for prevention and treatment of disorders in recent years. Globularia alypum L. (GA) is widely used in folk medicine against skin diseases and abscesses, however there is no scientific evidence justifying its use. This study aimed to evaluate the wound healing and anti-inflammatory effect, the antibacterial and antioxidant activities, as well as the chemical compositions of GA methanolic extract (GAME). Chemical compounds of GAME were examined by GC-MS. Wound healing effect was assessed by second-degree burn wounds in rats, anti-inflammatory activity was studied by carrageenan-induced rat paw edema, antioxidant activity was estimated by the DPPH, reducing power and β-carotene tests and antimicrobial activity was tested against 6 bacteria. A total of 17 compounds were identified. GAME-treated rats showed an improvement in healing process and carrageenan-induced hind paws edema as assessed by histological and biochemical investigations, compared to the control. A significant antioxidant and antibacterial activities were also observed in GAME-treated rats. GAME revealed a burn wound healing activity probably due to the anti-inflammatory, antimicrobial and antioxidant activities of its phytochemical contents. Thus, this study confirms its traditional use, however further more precise studies are needed for future clinical application.
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Affiliation(s)
- Zohra Ghlissi
- Research Unit of Pharmacology and Toxicology of Xenobiotics, Faculty of Medicine, University of Sfax, 3029, Sfax, Tunisie.
| | - Rim Kallel
- Anatomopathology Laboratory, Habib Bourguiba University Hospital, 3029, Sfax, Tunisie
| | - Assaad Sila
- Unit Enzymes & Bioconversion, National School of Engineers of Sfax, University of Sfax, 3038, Sfax, Tunisie
| | - Bahira Harrabi
- Research Unit of Pharmacology and Toxicology of Xenobiotics, Faculty of Medicine, University of Sfax, 3029, Sfax, Tunisie
| | - Rim Atheymen
- Research Unit of Pharmacology and Toxicology of Xenobiotics, Faculty of Medicine, University of Sfax, 3029, Sfax, Tunisie
| | - Khaled Zeghal
- Research Unit of Pharmacology and Toxicology of Xenobiotics, Faculty of Medicine, University of Sfax, 3029, Sfax, Tunisie
| | - Ali Bougatef
- Unit Enzymes & Bioconversion, National School of Engineers of Sfax, University of Sfax, 3038, Sfax, Tunisie
| | - Zouheir Sahnoun
- Research Unit of Pharmacology and Toxicology of Xenobiotics, Faculty of Medicine, University of Sfax, 3029, Sfax, Tunisie
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Yin K, Smith AG. Nuclear receptor function in skin health and disease: therapeutic opportunities in the orphan and adopted receptor classes. Cell Mol Life Sci 2016; 73:3789-800. [PMID: 27544210 PMCID: PMC11108460 DOI: 10.1007/s00018-016-2329-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Accepted: 08/04/2016] [Indexed: 12/12/2022]
Abstract
The skin forms a vital barrier between an organism's external environment, providing protection from pathogens and numerous physical and chemical threats. Moreover, the intact barrier is essential to prevent water and electrolyte loss without which terrestrial life could not be maintained. Accordingly, acute disruption of the skin through physical or chemical trauma needs to be repaired timely and efficiently as sustained skin pathologies ranging from mild irritations and inflammation through to malignancy impact considerably on morbidity and mortality. The Nuclear Hormone Receptor Family of transcriptional regulators has proven to be highly valuable targets for addressing a range of pathologies, including metabolic syndrome and cancer. Indeed members of the classic endocrine sub-group, such as the glucocorticoid, retinoid, and Vitamin D receptors, represent mainstay treatment strategies for numerous inflammatory skin disorders, though side effects from prolonged use are common. Emerging evidence has now highlighted important functional roles for nuclear receptors belonging to the adopted and orphan subgroups in skin physiology and patho-physiology. This review will focus on these subgroups and explore the current evidence that suggests these nuclear receptor hold great promise as future stand-alone or complementary drug targets in treating common skin diseases and maintaining skin homeostasis.
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Affiliation(s)
- Kelvin Yin
- School of Biomedical Sciences, University of Queensland, Brisbane, QLD, 4072, Australia
| | - Aaron G Smith
- Dermatology Research Centre, School of Medicine, University of Queensland, Brisbane, QLD, 4072, Australia.
- School of Biomedical Science, Institute of Health and Biomedical Innovation at the Translational Research Institute, Queensland University of Technology, Woolloongabba, QLD, 4102, Australia.
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Abstract
No agent has been identified that significantly accelerates the repair of chronic dermal wounds in humans. Thymosin beta 4 (Tβ4) is a small, abundant, naturally occurring regenerative protein that is found in body fluids and inside cells. It was found to have angiogenic and antiinflammatory activity and to be high in platelets that aggregate at the wound site. Thus we used Tβ4 initially in dermal healing. It has since been shown to have many activities important in tissue protection, repair, and regeneration. Tβ4 increases the rate of dermal healing in various preclinical animal models, including diabetic and aged animals, and is active for burns as well. Tβ4 also accelerated the rate of repair in phase 2 trials with patients having pressure ulcers, stasis ulcers, and epidermolysis bullosa wounds. It is safe and well tolerated and will likely have additional uses in the skin and in injured organs for tissue repair and regeneration.
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Affiliation(s)
- H K Kleinman
- George Washington University, Washington, DC, United States.
| | - G Sosne
- Kresge Eye Institute, Wayne State University School of Medicine, Detroit, MI, United States
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Boukeloua A, Belkhiri A, Yilmaz MA, Temel H. Chemical profiling and total thickness-excised wound-healing activity of Pistacia lentiscus L. fruits growing in Algeria. ACTA ACUST UNITED AC 2016. [DOI: 10.1080/23312025.2016.1182611] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Ahmed Boukeloua
- Faculte des Sciences Exactes et des Sciences de la Nature et de la Vie, Department of Biology, Universite dȮum El Bouaghi, Oum Bouaghi 04000, Algeria
| | - Abdelmalik Belkhiri
- Faculty of Medicine, Department of Pharmacy, Universite de Constantine, Constantine, Algeria
| | - Mustafa Abdullah Yilmaz
- Dicle University Science and Technology Research and Application Center, Diyarbakır Sur, Turkey
| | - Hamdi Temel
- Faculty of Pharmacy, Department of Pharmaceutical Chemistry, Dicle University, Diyarbakır, Turkey
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44
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Crompton R, Williams H, Ansell D, Campbell L, Holden K, Cruickshank S, Hardman MJ. Oestrogen promotes healing in a bacterial LPS model of delayed cutaneous wound repair. J Transl Med 2016; 96:439-49. [PMID: 26855364 DOI: 10.1038/labinvest.2015.160] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Revised: 12/04/2015] [Accepted: 12/11/2015] [Indexed: 12/21/2022] Open
Abstract
Wound infection is a major clinical problem, yet understanding of bacterial host interactions in the skin remains limited. Microbe-derived molecules, known as pathogen-associated molecular patterns, are recognised in barrier tissues by pattern-recognition receptors. In particular, the pathogen-associated molecular pattern, lipopolysaccharide (LPS), a component of microbial cell walls and a specific ligand for Toll-like receptor 4, has been widely used to mimic systemic and local infection across a range of tissues. Here we administered LPS derived from Klebsiella pneumoniae, a species of bacteria that is emerging as a wound-associated pathogen, to full-thickness cutaneous wounds in C57/BL6 mice. Early in healing, LPS-treated wounds displayed increased local apoptosis and reduced proliferation. Subsequent healing progression was delayed with reduced re-epithelialisation, increased proliferation, a heightened inflammatory response and perturbed wound matrix deposition. Our group and others have previously demonstrated the beneficial effects of 17β-estradiol treatment across a range of preclinical wound models. Here we asked whether oestrogen would effectively promote healing in our LPS bacterial infection model. Intriguingly, co-treatment with 17β-estradiol was able to promote re-epithelialisation, dampen inflammation and induce collagen deposition in our LPS-delayed healing model. Collectively, these studies validate K. pneumoniae-derived LPS treatment as a simple yet effective model of bacterial wound infection, while providing the first indication that oestrogen could promote cutaneous healing in the presence of infection, further strengthening the case for its therapeutic use.
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Affiliation(s)
- Rachel Crompton
- The Healing Foundation Centre, Faculty of Life Sciences, The University of Manchester, Manchester, UK
| | - Helen Williams
- The Healing Foundation Centre, Faculty of Life Sciences, The University of Manchester, Manchester, UK
| | - David Ansell
- The Healing Foundation Centre, Faculty of Life Sciences, The University of Manchester, Manchester, UK.,The Centre for Dermatology Research, Institute of Inflammation and Repair, The University of Manchester, Manchester, UK
| | - Laura Campbell
- The Healing Foundation Centre, Faculty of Life Sciences, The University of Manchester, Manchester, UK
| | | | | | - Matthew J Hardman
- The Healing Foundation Centre, Faculty of Life Sciences, The University of Manchester, Manchester, UK
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Hong H, Shen J, Ng HW, Sakkiah S, Ye H, Ge W, Gong P, Xiao W, Tong W. A Rat α-Fetoprotein Binding Activity Prediction Model to Facilitate Assessment of the Endocrine Disruption Potential of Environmental Chemicals. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2016; 13:372. [PMID: 27023588 PMCID: PMC4847034 DOI: 10.3390/ijerph13040372] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Revised: 03/10/2016] [Accepted: 03/22/2016] [Indexed: 11/21/2022]
Abstract
Endocrine disruptors such as polychlorinated biphenyls (PCBs), diethylstilbestrol (DES) and dichlorodiphenyltrichloroethane (DDT) are agents that interfere with the endocrine system and cause adverse health effects. Huge public health concern about endocrine disruptors has arisen. One of the mechanisms of endocrine disruption is through binding of endocrine disruptors with the hormone receptors in the target cells. Entrance of endocrine disruptors into target cells is the precondition of endocrine disruption. The binding capability of a chemical with proteins in the blood affects its entrance into the target cells and, thus, is very informative for the assessment of potential endocrine disruption of chemicals. α-fetoprotein is one of the major serum proteins that binds to a variety of chemicals such as estrogens. To better facilitate assessment of endocrine disruption of environmental chemicals, we developed a model for α-fetoprotein binding activity prediction using the novel pattern recognition method (Decision Forest) and the molecular descriptors calculated from two-dimensional structures by Mold² software. The predictive capability of the model has been evaluated through internal validation using 125 training chemicals (average balanced accuracy of 69%) and external validations using 22 chemicals (balanced accuracy of 71%). Prediction confidence analysis revealed the model performed much better at high prediction confidence. Our results indicate that the model is useful (when predictions are in high confidence) in endocrine disruption risk assessment of environmental chemicals though improvement by increasing number of training chemicals is needed.
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Affiliation(s)
- Huixiao Hong
- Division of Bioinformatics and Biostatistics, National Center for Toxicological Research, U.S. Food and Drug Administration, Jefferson, AR 72079, USA.
| | - Jie Shen
- Division of Bioinformatics and Biostatistics, National Center for Toxicological Research, U.S. Food and Drug Administration, Jefferson, AR 72079, USA.
| | - Hui Wen Ng
- Division of Bioinformatics and Biostatistics, National Center for Toxicological Research, U.S. Food and Drug Administration, Jefferson, AR 72079, USA.
| | - Sugunadevi Sakkiah
- Division of Bioinformatics and Biostatistics, National Center for Toxicological Research, U.S. Food and Drug Administration, Jefferson, AR 72079, USA.
| | - Hao Ye
- Division of Bioinformatics and Biostatistics, National Center for Toxicological Research, U.S. Food and Drug Administration, Jefferson, AR 72079, USA.
| | - Weigong Ge
- Division of Bioinformatics and Biostatistics, National Center for Toxicological Research, U.S. Food and Drug Administration, Jefferson, AR 72079, USA.
| | - Ping Gong
- Environmental Laboratory, U.S. Army Engineer Research and Development Center, 3909 Halls Ferry Road, Vicksburg, MS 39180, USA.
| | - Wenming Xiao
- Division of Bioinformatics and Biostatistics, National Center for Toxicological Research, U.S. Food and Drug Administration, Jefferson, AR 72079, USA.
| | - Weida Tong
- Division of Bioinformatics and Biostatistics, National Center for Toxicological Research, U.S. Food and Drug Administration, Jefferson, AR 72079, USA.
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Comparative transcriptomic profiling of hydrogen peroxide signaling networks in zebrafish and human keratinocytes: Implications toward conservation, migration and wound healing. Sci Rep 2016; 6:20328. [PMID: 26846883 PMCID: PMC4742856 DOI: 10.1038/srep20328] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Accepted: 12/30/2015] [Indexed: 12/31/2022] Open
Abstract
Skin wounds need to be repaired rapidly after injury to restore proper skin barrier function. Hydrogen peroxide (H2O2) is a conserved signaling factor that has been shown to promote a variety of skin wound repair processes, including immune cell migration, angiogenesis and sensory axon repair. Despite growing research on H2O2 functions in wound repair, the downstream signaling pathways activated by this reactive oxygen species in the context of injury remain largely unknown. The goal of this study was to provide a comprehensive analysis of gene expression changes in the epidermis upon exposure to H2O2 concentrations known to promote wound repair. Comparative transcriptome analysis using RNA-seq data from larval zebrafish and previously reported microarray data from a human epidermal keratinocyte line shows that H2O2 activates conserved cell migration, adhesion, cytoprotective and anti-apoptotic programs in both zebrafish and human keratinocytes. Further assessment of expression characteristics and signaling pathways revealed the activation of three major H2O2–dependent pathways, EGF, FOXO1, and IKKα. This study expands on our current understanding of the clinical potential of low-level H2O2 for the promotion of epidermal wound repair and provides potential candidates in the treatment of wound healing deficits.
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1,25-dihydroxyvitamin D3 inhibits corneal wound healing in an ex-vivo mouse model. Graefes Arch Clin Exp Ophthalmol 2016; 254:717-24. [PMID: 26794222 DOI: 10.1007/s00417-016-3267-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Revised: 12/07/2015] [Accepted: 01/07/2016] [Indexed: 10/22/2022] Open
Abstract
PURPOSE Impaired healing of corneal injuries can result in ulceration and complete loss of vision, especially in the elderly. Such patients frequently also exhibit vitamin D insufficiency. 1,25-dihydroxyvitamin D3 is the active vitamin D metabolite. As it affects cell proliferation and inflammation, we herein aimed at elucidating its influence on corneal wound healing after alkali burn by using in vitro and ex vivo techniques. METHODS mRNA abundance in human corneal epithelial cells in response to vitamin D3 was determined by RT-PCR. Corneal re-epithelialization after alkaline burn was analyzed using enucleated mouse eyes and fluorescein staining. RESULTS Human corneal epithelial cells (HCEC) expressed the vitamin D receptor (VDR) and retinoid x receptor (RXR) and were responsive to 1,25- dihydroxyvitamin D3, as shown by induction of the 1,25- dihydroxyvitamin D3 responsive gene cyp-24A1 and slightly reduced abundance of IL-6 mRNA. However, no effect on cell vitality and migration was observed. In contrast, re-epithelialization of mouse corneas ex vivo was dose dependently inhibited by 1,25- dihydroxyvitamin D3. CONCLUSIONS These data indicate that topically applied 1,25- dihydroxyvitamin D3 does not seem to be suitable for therapy of corneal lesions.
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48
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Gibot L, Rols MP. Gene transfer by pulsed electric field is highly promising in cutaneous wound healing. Expert Opin Biol Ther 2015; 16:67-77. [DOI: 10.1517/14712598.2016.1098615] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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