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Zhang XD, Teng C, Bai X, Teng J, Chilukuri S, Lewis A, Gold MH. Enhanced skin regeneration and therapeutic delivery using novel diamond-augmented zinc oxide. J Cosmet Dermatol 2024; 23:4043-4050. [PMID: 39083431 PMCID: PMC11626335 DOI: 10.1111/jocd.16508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2024] [Revised: 07/18/2024] [Accepted: 07/22/2024] [Indexed: 08/02/2024]
Abstract
BACKGROUND Recent advancements in dermatological therapeutics have highlighted the need for treatments that enhance skin regeneration and healing. Diamond-Augmented Zinc Oxide (ND-ZnO) technology combines zinc oxide with diamond particles in a unique core-shell structure, offering a multifaceted approach to overall skin health. AIMS This study evaluates the efficacy of ND-ZnO in promoting human dermal fibroblast migration and growth, enhancing total collagen synthesis, and improving transdermal delivery of active ingredients as a daily comprehensive skin regeneration topical therapy. PATIENTS/METHODS In vitro assays assessed wound healing, collagen production, and skin absorption. Human Dermal Fibroblasts (HDFs) were used in scratch wound assays. Collagen synthesis was quantified using enzyme-linked immunosorbent assays (ELISA). Permeation tests were performed on reconstructed human epidermal tissues to evaluate niacinamide absorption. Clinical case studies validated ND-ZnO efficacy in post-CO₂ laser treatments and Actinic Keratosis removal recovery. RESULTS ND-ZnO increased HDF migration by 198% compared to controls. Collagen synthesis assays showed a 71.3% restoration of collagen production in aged HDFs. Skin permeation studies revealed a 203% increase in niacinamide skin absorption with ND-ZnO. Clinical case studies demonstrated faster and more effective healing post-ablative CO₂ laser and significant improvements in Actinic Keratosis recovery. CONCLUSIONS ND-ZnO technology enhances wound healing, collagen synthesis, and active ingredient delivery, offering substantial benefits for daily skin regeneration and other dermatological applications. This innovative approach holds promise for advancing dermatological therapeutics, providing comprehensive skin care solutions that address both protective and regenerative needs.
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Affiliation(s)
- Xinge Diana Zhang
- School of Applied Sciences and EngineeringHarvard UniversityCambridgeMassachusettsUSA
| | - Claudia Teng
- B.A.I. Biosciences, Inc.CambridgeMassachusettsUSA
| | - Xuefei Bai
- B.A.I. Biosciences, Inc.CambridgeMassachusettsUSA
| | - Joyce Teng
- Department of DermatologyStanford University School of MedicineStanfordCaliforniaUSA
| | - Suneel Chilukuri
- Refresh DermatologyHoustonTexasUSA
- Department of MedicineBaylor College of MedicineHoustonTexasUSA
| | - Amy Lewis
- Lewis DermatologyNew YorkNew YorkUSA
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Ghanbari M, Salkovskiy Y, Carlson MA. The rat as an animal model in chronic wound research: An update. Life Sci 2024; 351:122783. [PMID: 38848945 PMCID: PMC11581782 DOI: 10.1016/j.lfs.2024.122783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 03/29/2024] [Accepted: 06/04/2024] [Indexed: 06/09/2024]
Abstract
The increasing global prevalence of chronic wounds underscores the growing importance of developing effective animal models for their study. This review offers a critical evaluation of the strengths and limitations of rat models frequently employed in chronic wound research and proposes potential improvements. It explores these models in the context of key comorbidities, including diabetes, venous and arterial insufficiency, pressure-induced blood flow obstruction, and infections. Additionally, the review examines important wound factors including age, sex, smoking, and the impact of anesthetic and analgesic drugs, acknowledging their substantial effects on research outcomes. A thorough understanding of these variables is crucial for refining animal models and can provide valuable insights for future research endeavors.
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Affiliation(s)
- Mahboubeh Ghanbari
- Department of Biomechanics, University of Nebraska at Omaha, Omaha, NE, USA.
| | - Yury Salkovskiy
- Department of Biomechanics, University of Nebraska at Omaha, Omaha, NE, USA.
| | - Mark A Carlson
- Department of Surgery, Department of Genetics, Cell Biology and Anatomy, University of Nebraska Medical Center, Omaha, NE, USA.
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Fan R, Zhang Y, Liu R, Wei C, Wang X, Wu X, Yu X, Li Z, Mao R, Hu J, Zhu N, Liu X, Li Y, Xu M. Exogenous Nucleotides Improve the Skin Aging of SAMP8 Mice by Modulating Autophagy through MAPKs and AMPK Pathways. Nutrients 2024; 16:1907. [PMID: 38931262 PMCID: PMC11206724 DOI: 10.3390/nu16121907] [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] [Received: 05/04/2024] [Revised: 06/07/2024] [Accepted: 06/15/2024] [Indexed: 06/28/2024] Open
Abstract
The skin, serving as the body's primary defense against external elements, plays a crucial role in protecting the body from infections and injuries, as well as maintaining overall homeostasis. Skin aging, a common manifestation of the aging process, involves the gradual deterioration of its normal structure and repair mechanisms. Addressing the issue of skin aging is increasingly imperative. Multiple pieces of evidence indicate the potential anti-aging effects of exogenous nucleotides (NTs) through their ability to inhibit oxidative stress and inflammation. This study aims to investigate whether exogenous NTs can slow down skin aging and elucidate the underlying mechanisms. To achieve this objective, senescence-accelerated mouse prone-8 (SAMP8) mice were utilized and randomly allocated into Aging, NTs-low, NTs-middle, and NTs-high groups, while senescence-accelerated mouse resistant 1 (SAMR1) mice were employed as the control group. After 9 months of NT intervention, dorsal skin samples were collected to analyze the pathology and assess the presence and expression of substances related to the aging process. The findings indicated that a high-dose NT treatment led to a significant increase in the thickness of the epithelium and dermal layers, as well as Hyp content (p < 0.05). Additionally, it was observed that low-dose NT intervention resulted in improved aging, as evidenced by a significant decrease in p16 expression (p < 0.05). Importantly, the administration of high doses of NTs could improve, in some ways, mitochondrial function, which is known to reduce oxidative stress and promote ATP and NAD+ production significantly. These observed effects may be linked to NT-induced autophagy, as evidenced by the decreased expression of p62 and increased expression of LC3BI/II in the intervention groups. Furthermore, NTs were found to upregulate pAMPK and PGC-1α expression while inhibiting the phosphorylation of p38MAPK, JNK, and ERK, suggesting that autophagy may be regulated through the AMPK and MAPK pathways. Therefore, the potential induction of autophagy by NTs may offer benefits in addressing skin aging through the activation of the AMPK pathway and the inhibition of the MAPK pathway.
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Affiliation(s)
- Rui Fan
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China; (R.F.); (Y.Z.); (R.L.); (C.W.); (X.W.); (X.W.); (X.Y.); (Z.L.); (R.M.); (J.H.); (N.Z.); (X.L.); (Y.L.)
- Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Peking University, Beijing 100191, China
| | - Ying Zhang
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China; (R.F.); (Y.Z.); (R.L.); (C.W.); (X.W.); (X.W.); (X.Y.); (Z.L.); (R.M.); (J.H.); (N.Z.); (X.L.); (Y.L.)
- Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Peking University, Beijing 100191, China
| | - Rui Liu
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China; (R.F.); (Y.Z.); (R.L.); (C.W.); (X.W.); (X.W.); (X.Y.); (Z.L.); (R.M.); (J.H.); (N.Z.); (X.L.); (Y.L.)
- Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Peking University, Beijing 100191, China
| | - Chan Wei
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China; (R.F.); (Y.Z.); (R.L.); (C.W.); (X.W.); (X.W.); (X.Y.); (Z.L.); (R.M.); (J.H.); (N.Z.); (X.L.); (Y.L.)
- Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Peking University, Beijing 100191, China
| | - Xiujuan Wang
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China; (R.F.); (Y.Z.); (R.L.); (C.W.); (X.W.); (X.W.); (X.Y.); (Z.L.); (R.M.); (J.H.); (N.Z.); (X.L.); (Y.L.)
- Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Peking University, Beijing 100191, China
| | - Xin Wu
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China; (R.F.); (Y.Z.); (R.L.); (C.W.); (X.W.); (X.W.); (X.Y.); (Z.L.); (R.M.); (J.H.); (N.Z.); (X.L.); (Y.L.)
- Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Peking University, Beijing 100191, China
| | - Xiaochen Yu
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China; (R.F.); (Y.Z.); (R.L.); (C.W.); (X.W.); (X.W.); (X.Y.); (Z.L.); (R.M.); (J.H.); (N.Z.); (X.L.); (Y.L.)
- Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Peking University, Beijing 100191, China
| | - Zhen Li
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China; (R.F.); (Y.Z.); (R.L.); (C.W.); (X.W.); (X.W.); (X.Y.); (Z.L.); (R.M.); (J.H.); (N.Z.); (X.L.); (Y.L.)
- Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Peking University, Beijing 100191, China
| | - Ruixue Mao
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China; (R.F.); (Y.Z.); (R.L.); (C.W.); (X.W.); (X.W.); (X.Y.); (Z.L.); (R.M.); (J.H.); (N.Z.); (X.L.); (Y.L.)
- Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Peking University, Beijing 100191, China
| | - Jiani Hu
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China; (R.F.); (Y.Z.); (R.L.); (C.W.); (X.W.); (X.W.); (X.Y.); (Z.L.); (R.M.); (J.H.); (N.Z.); (X.L.); (Y.L.)
- Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Peking University, Beijing 100191, China
| | - Na Zhu
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China; (R.F.); (Y.Z.); (R.L.); (C.W.); (X.W.); (X.W.); (X.Y.); (Z.L.); (R.M.); (J.H.); (N.Z.); (X.L.); (Y.L.)
- Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Peking University, Beijing 100191, China
| | - Xinran Liu
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China; (R.F.); (Y.Z.); (R.L.); (C.W.); (X.W.); (X.W.); (X.Y.); (Z.L.); (R.M.); (J.H.); (N.Z.); (X.L.); (Y.L.)
- Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Peking University, Beijing 100191, China
| | - Yong Li
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China; (R.F.); (Y.Z.); (R.L.); (C.W.); (X.W.); (X.W.); (X.Y.); (Z.L.); (R.M.); (J.H.); (N.Z.); (X.L.); (Y.L.)
- Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Peking University, Beijing 100191, China
| | - Meihong Xu
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China; (R.F.); (Y.Z.); (R.L.); (C.W.); (X.W.); (X.W.); (X.Y.); (Z.L.); (R.M.); (J.H.); (N.Z.); (X.L.); (Y.L.)
- Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Peking University, Beijing 100191, China
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Cui H, Feng C, Guo C, Bu X, Li X, Zhang T, Cheng S, Duan Z. Research on the anti-aging efficacy of fermented lysate VHProbi® MixA as the functional skincare ingredient. J Appl Microbiol 2024; 135:lxad274. [PMID: 37977853 DOI: 10.1093/jambio/lxad274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 09/25/2023] [Accepted: 11/16/2023] [Indexed: 11/19/2023]
Abstract
AIMS This study aimed to investigate the efficacy of a cream containing VHProbi® MixA for improving skin aging. METHODS AND RESULTS In vitro studies demonstrated that the lysate produced from Lacticaseibacillus paracasei E12 (E12) exhibited immunoregulatory effects in a 3D skin model, with significant reductions in levels of interleukin (IL)-1α, IL-1β, and IL-8 (P < 0.05) compared with the control group. In addition, the lysate of E12 mitigated the hydrogen peroxide-induced mortality of 3D skin cells and enhanced the transepithelial electrical resistance to show significant differences in comparison with control (P < 0.05), suggesting favorable antioxidant effects. The antioxidant capacity of the lysate of E12 was also confirmed using the Caenorhabditis elegans N2 model. C. elegans N2 fed the E12 strain showed a significantly higher % survival than those fed Escherichia coli OP50 (P < 0.05). Subsequently, VHProbi® MixA was formulated using the fermented lysates of E12, Lactiplantibacillus plantarum E15, and Limosilactobacillus reuteri E18. In a clinical study to ascertain if a cream containing VHProbi® MixA could improve the skin aging trends, participants were asked to use the investigational products for 60 days, and six indicators, transepidermal water loss (TEWL), hydration, elasticity, wrinkles, skin texture (roughness), and pores were measured at baseline and the endpoint of the study. A self-evaluation questionnaire analysis was also provided. TEWL, wrinkles, skin texture, and thickness of pores decreased significantly after treatment with the cream for 60 days (P < 0.01), whereas hydration and elasticity increased significantly (P < 0.01), in comparison to the baseline measurements. CONCLUSIONS We hypothesize that the use of the cream containing VHProbi® MixA could be favorable for skin anti-aging management.
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Affiliation(s)
- Hongchang Cui
- Qingdao Vland Biotech Group Co., Ltd., Laoshan District, Qingdao 266102, China
| | - Congrui Feng
- Qingdao Vland Biotech Group Co., Ltd., Laoshan District, Qingdao 266102, China
| | - Chaoqun Guo
- Qingdao Vland Biotech Group Co., Ltd., Laoshan District, Qingdao 266102, China
| | - Xinping Bu
- Qingdao Vland Biotech Group Co., Ltd., Laoshan District, Qingdao 266102, China
| | - Xinping Li
- Qingdao Vland Biotech Group Co., Ltd., Laoshan District, Qingdao 266102, China
| | - Tao Zhang
- Qingdao Vland Biotech Group Co., Ltd., Laoshan District, Qingdao 266102, China
| | - Sidao Cheng
- Qingdao Vland Biotech Group Co., Ltd., Laoshan District, Qingdao 266102, China
| | - Zhi Duan
- Qingdao Vland Biotech Group Co., Ltd., Laoshan District, Qingdao 266102, China
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Sparavigna A, Grimolizzi F, Cigni C, Lualdi R, Bellia G. Efficacy and tolerability of Profhilo® Structura intended to restore lateral cheek fat compartment: An observational pilot study. Health Sci Rep 2024; 7:e1743. [PMID: 38260185 PMCID: PMC10801275 DOI: 10.1002/hsr2.1743] [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: 08/11/2023] [Revised: 09/29/2023] [Accepted: 11/13/2023] [Indexed: 01/24/2024] Open
Abstract
Background and Aims Hyaluronic acid (HA)-based injections are used worldwide to improve skin defects associated with aging and ultraviolet light/environmental exposure. HA formulations developed according to molecular weight or with additional components, for example, cross-linking reagents, are limited by their low biological activity and concentration limit. NAHYCO™ technology has enabled the production of hybrid cooperative complexes (HCCs) of low and high molecular weight HA. Developed for injection into the fat compartments of the face and previously demonstrating potential benefits for adipose tissue restoration, Profhilo Structura® is a new 2 mL HCC formulation comprising low molecular weight HA (45 mg/mL) and high molecular weight HA (45 mg/mL). To evaluate the efficacy and tolerability of Profhilo Structura® to restore adipose tissue compartments in the lateral cheek fat compartment. Methods Fifty healthy enrolled subjects received two injections, 1 month apart, and were evaluated 3 months posttreatment. Investigators performed clinical evaluations (Facial Volume Loss Scale [FVLS] and Wrinkle Severity Rating Scale [WSRS]) at different time points. Subjects also completed self-evaluation assessments following treatment. Results A significant improvement in FVLS and WSRS clinical scores after the first treatment was observed; treatment benefit was maintained 3 months after treatment completion and confirmed by subject self-assessment. Most participants reported an improvement, particularly a marked reduction of wrinkles and increased skin firmness. No serious adverse events were reported, confirming the excellent safety profile of HCC injectable devices. Conclusions Overall, the study highlighted the efficacy and tolerability of the studied medical device proving its effect on adipose tissue.
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Jimenez-Gómez N, López-Suárez A, Haro S, Fernández-González P, Monserrat J, Eraña-Tomás I, Cuevas-Santos J, Rodríguez-Luna A, Ortega MA, Gómez-Sánchez MJ, Díaz D, Jaén-Olasolo P, Álvarez-Mon M. Immunomodulation with AM3 and antioxidants creates an adequate framework for skin repair and decreases the monocyte proinflammatory stage in smoker women. Biomed Pharmacother 2024; 170:115929. [PMID: 38070248 DOI: 10.1016/j.biopha.2023.115929] [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] [Received: 07/27/2023] [Revised: 11/13/2023] [Accepted: 11/20/2023] [Indexed: 01/10/2024] Open
Abstract
Smoking has been considering a crucial factor in promoting skin and systemic aging that is associated with the development of a low-level, systemic, chronic inflammation known as "inflammaging" in which monocytes play a pivotal role. Our aim was to investigate the effects of AM3 plus antioxidants vs placebo in the activation status, function of monocytes and cutaneous aging parameters in healthy smoker middle-aged women. A total of 32 women were 1:1 randomly assigned to AM3 plus antioxidants or placebo for three months. Peripheral mononuclear blood cells and cutaneous biopsy were obtained and flow cytometry and immunohistological studies, respectively, were performed before and after the treatment. AM3 plus antioxidants treatment compared with placebo significantly reduced the monocyte production of the proinflammatory interleukin 1 (IL-1), tumor necrosis factor α (TNF-α) and interleukin 6 (IL-6) cytokines as well as increased the regulatory IL-10 in middle-aged smoker women. Furthermore, AM3 and antioxidants did not modify ROS production by monocytes and granulocytes but increased their phagocytic activity. The active combination also stimulated a significative increase in reticular dermis depth as well as an increase in the expression of CD117 and CD31. Thus, AM3 and antioxidants treatment reduces the systemic proinflammatory monocyte disturbance of heathy smoker middle-aged women and encourage skin repair mechanisms.
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Affiliation(s)
| | - Andrea López-Suárez
- Immune System Diseases-Rheumatology and Oncology Service, University Hospital "Príncipe de Asturias", Alcalá de Henares, 28805 Madrid, Spain
| | - Sergio Haro
- Department of Medicine and Medical Specialties, Faculty of Medicine and Health Sciences, University of Alcalá, Alcalá de Henares, Madrid 28801, Spain
| | - Pablo Fernández-González
- Dermatology Department, Ramón y Cajal Hospital, 28034 Madrid, Spain; Medical department, Cantabria Labs, 28043 Madrid, Spain.
| | - Jorge Monserrat
- Immune System Diseases-Rheumatology and Oncology Service, University Hospital "Príncipe de Asturias", Alcalá de Henares, 28805 Madrid, Spain
| | - Itziar Eraña-Tomás
- Pathology Department, Fundación Jimenez Díaz Hospital, 28040 Madrid, Spain
| | - Jesus Cuevas-Santos
- Department of Medicine and Medical Specialties, Faculty of Medicine and Health Sciences, University of Alcalá, Alcalá de Henares, Madrid 28801, Spain
| | - Azahara Rodríguez-Luna
- Faculty of Health Sciences, Universidad Loyola Andalucía, Seville, Spain; Department of Pharmacology, Faculty of Pharmacy, University of Seville, Profesor García González Street Seville, 41012, Spain
| | - Miguel A Ortega
- Department of Medicine and Medical Specialties, Faculty of Medicine and Health Sciences, University of Alcalá, Alcalá de Henares, Madrid 28801, Spain; Ramón y Cajal Institute of Sanitary Research (IRYCIS), 28034 Madrid, Spain
| | | | - David Díaz
- Immune System Diseases-Rheumatology and Oncology Service, University Hospital "Príncipe de Asturias", Alcalá de Henares, 28805 Madrid, Spain
| | - Pedro Jaén-Olasolo
- Dermatology Department, Ramón y Cajal Hospital, 28034 Madrid, Spain; Department of Medicine and Medical Specialties, Faculty of Medicine and Health Sciences, University of Alcalá, Alcalá de Henares, Madrid 28801, Spain
| | - Melchor Álvarez-Mon
- Immune System Diseases-Rheumatology and Oncology Service, University Hospital "Príncipe de Asturias", Alcalá de Henares, 28805 Madrid, Spain; Department of Medicine and Medical Specialties, Faculty of Medicine and Health Sciences, University of Alcalá, Alcalá de Henares, Madrid 28801, Spain
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Yoon JH, Park SH, Yoon SE, Hong SY, Lee JB, Lee J, Cho JY. Hydrangea serrata Hot Water Extract and Its Major Ingredient Hydrangenol Improve Skin Moisturization and Wrinkle Conditions via AP-1 and Akt/PI3K Pathway Upregulation. Nutrients 2023; 15:nu15112436. [PMID: 37299400 DOI: 10.3390/nu15112436] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 04/03/2023] [Accepted: 04/04/2023] [Indexed: 06/12/2023] Open
Abstract
Hydrangea serrata is a plant grown in Korea and Japan with a particular natural compound, hydrangenol. H. serrata has been researched for its anti-fungal properties, and ability to attenuate allergies and promote muscle growth. Its ability to reduce skin dryness is poorly understood. For that reason, we investigated whether H. serrata hot water extracts (Hs-WE) can moisturize keratinocytes. In clinical studies (Approval Code: GIRB-21929-NY and approval Date: 5 October 2021), skin wrinkles and skin moisturizing levels were improved in subjects applying 0.5% Hs-WE compared to the placebo group. We confirmed the components of Hs-WE from the LC/MS-MS analysis. Hs-WE and hydrangenol did not show cytotoxicity in HaCaT cells at all concentrations. Cell growth was also promoted by Hs-WE (5-20 µg/mL) and hydrangenol (15-60 µM) in a wound healing assay. Skin moisturizing factors were upregulated by the presence of Hs-WE or hydrangenol, and the hyaluronidases (HYAL) were inhibited at the mRNA level. Meanwhile, COL1A1 was increased by the presence of Hs-WE or hydrangenol. MAPK, AP-1, and Akt/PI3k signaling proteins, which are associated with cell proliferation and moisturizing factors, were increased by the administration of Hs-WE and hydrangenol. Has-1, 2, and 3 levels were enhanced via JNK when using the inhibitors of MAPK proteins and Hs-WE and hydrangenol, respectively. Taken together, Hs-WE could be used as cosmeceutical materials for improving skin conditions.
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Affiliation(s)
- Ji Hye Yoon
- Department of Biocosmetics, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Sang Hee Park
- Department of Biocosmetics, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Si Eun Yoon
- Department of Biocosmetics, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Seong Yoon Hong
- Innovation Lab., Cosmax R&I Center, Seongnam 13486, Republic of Korea
| | - Jun Bae Lee
- Innovation Lab., Cosmax R&I Center, Seongnam 13486, Republic of Korea
| | - Jongsung Lee
- Department of Biocosmetics, Sungkyunkwan University, Suwon 16419, Republic of Korea
- Department of Integrative Biotechnology, Biomedical Institute for Convergence at SKKU (BICS), Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Jae Youl Cho
- Department of Biocosmetics, Sungkyunkwan University, Suwon 16419, Republic of Korea
- Department of Integrative Biotechnology, Biomedical Institute for Convergence at SKKU (BICS), Sungkyunkwan University, Suwon 16419, Republic of Korea
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8
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Parisi M, Verrillo M, Luciano MA, Caiazzo G, Quaranta M, Scognamiglio F, Di Meo V, Villani A, Cantelli M, Gallo L, Altobelli GG, Poggi S, Spaccini R, Fabbrocini G. Use of Natural Agents and Agrifood Wastes for the Treatment of Skin Photoaging. PLANTS (BASEL, SWITZERLAND) 2023; 12:plants12040840. [PMID: 36840187 PMCID: PMC9966275 DOI: 10.3390/plants12040840] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 02/01/2023] [Accepted: 02/07/2023] [Indexed: 06/12/2023]
Abstract
Photoaging is the premature aging of the skin caused by repeated exposure to ultraviolet (UV) rays. The harmful effects of UV rays-from the sun or from artificial sources-alter normal skin structures and cause visible damage, especially in the most exposed areas. Fighting premature aging is one of the most important challenges of the medical landscape. Additionally, consumers are looking for care products that offer multiple benefits with reduced environmental and economic impact. The growing requests for bioactive compounds from aromatic plants for pharmaceutical and cosmetic applications have to find new sustainable methods to increase the effectiveness of new active formulations derived from eco-compatible technologies. The principle of sustainable practices and the circular economy favor the use of bioactive components derived from recycled biomass. The guidelines of the European Commission support the reuse of various types of organic biomass and organic waste, thus transforming waste management problems into economic opportunities. This review aims to elucidate the main mechanisms of photoaging and how these can be managed using natural renewable sources and specific bioactive derivatives, such as humic extracts from recycled organic biomass, as potential new actors in modern medicine.
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Affiliation(s)
- Melania Parisi
- Section of Dermatology, Department of Clinical Medicine and Surgery, University of Naples Federico II, Via Pansini 5, 80131 Naples, Italy
| | - Mariavittoria Verrillo
- Centro Interdipartimentale di Ricerca per la Risonanza Magnetica Nucleare per l’Ambiente, l’Agroalimentare, ed i Nuovi Materiali (CERMANU), Università di Napoli Federico II, Via Università 100, 80055 Portici, Italy
- Department of Agricultural Sciences, Università di Napoli Federico II, Via Università 100, 80055 Portici, Italy
| | - Maria Antonietta Luciano
- Section of Dermatology, Department of Clinical Medicine and Surgery, University of Naples Federico II, Via Pansini 5, 80131 Naples, Italy
| | - Giuseppina Caiazzo
- Section of Dermatology, Department of Clinical Medicine and Surgery, University of Naples Federico II, Via Pansini 5, 80131 Naples, Italy
| | - Maria Quaranta
- Section of Dermatology, Department of Clinical Medicine and Surgery, University of Naples Federico II, Via Pansini 5, 80131 Naples, Italy
| | - Francesco Scognamiglio
- Department of Agricultural Sciences, Università di Napoli Federico II, Via Università 100, 80055 Portici, Italy
| | - Vincenzo Di Meo
- Department of Agricultural Sciences, Università di Napoli Federico II, Via Università 100, 80055 Portici, Italy
| | - Alessia Villani
- Section of Dermatology, Department of Clinical Medicine and Surgery, University of Naples Federico II, Via Pansini 5, 80131 Naples, Italy
| | - Mariateresa Cantelli
- Section of Dermatology, Department of Clinical Medicine and Surgery, University of Naples Federico II, Via Pansini 5, 80131 Naples, Italy
| | - Lucia Gallo
- Section of Dermatology, Department of Clinical Medicine and Surgery, University of Naples Federico II, Via Pansini 5, 80131 Naples, Italy
| | - Giovanna G. Altobelli
- Department of Advanced Biomedical Sciences, Università degli Studi di Napoli Federico II, Via Pansini 5, 80131 Naples, Italy
| | - Serena Poggi
- Section of Dermatology, Department of Clinical Medicine and Surgery, University of Naples Federico II, Via Pansini 5, 80131 Naples, Italy
| | - Riccardo Spaccini
- Centro Interdipartimentale di Ricerca per la Risonanza Magnetica Nucleare per l’Ambiente, l’Agroalimentare, ed i Nuovi Materiali (CERMANU), Università di Napoli Federico II, Via Università 100, 80055 Portici, Italy
- Department of Agricultural Sciences, Università di Napoli Federico II, Via Università 100, 80055 Portici, Italy
| | - Gabriella Fabbrocini
- Section of Dermatology, Department of Clinical Medicine and Surgery, University of Naples Federico II, Via Pansini 5, 80131 Naples, Italy
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9
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The Antisenescence Effect of Exosomes from Human Adipose-Derived Stem Cells on Skin Fibroblasts. BIOMED RESEARCH INTERNATIONAL 2022; 2022:1034316. [PMID: 35813225 PMCID: PMC9259368 DOI: 10.1155/2022/1034316] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 05/08/2022] [Accepted: 06/14/2022] [Indexed: 11/17/2022]
Abstract
Human adipose-derived stem cells (ADSCs) have become a promising therapeutic approach against skin aging. Recent studies confirm that exosomes partially mediate the therapeutic effect of stem cells. This study successfully isolated exosomes from the ADSC culture medium and discovered that ADSC-derived exosomes (ADSC-Exos) could alleviate human dermal fibroblast (HDF) senescence and stimulate HDF migration. Moreover, ADSC-Exos increased the type I collagen expression level and reduced the reactive oxygen species (ROS) and senescence-associated β-galactosidase (SA-β-Gal) activity in HDFs. In addition, we demonstrated that ADSC-Exos significantly inhibited senescence-related protein expression levels of p53, p21, and p16. In conclusion, our results have revealed the antisenescence effects of ADSC-Exos on HDFs and ADSC-Exos may be a novel cell-free therapeutic tool for antiaging.
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10
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Oesch S, Vingan NR, Li X, Hoopman J, Akgul Y, Kenkel JM. A Correlation of the Glogau Scale With VISIA-CR Complexion Analysis Measurements in Assessing Facial Photoaging for Clinical Research. Aesthet Surg J 2022; 42:1175-1184. [PMID: 35468182 DOI: 10.1093/asj/sjac108] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Historically, common evaluations for photoaging have been subjective analysis; however, recently, investigators have turned to non-invasive devices for more objective evaluation of facial aging. OBJECTIVES This study aimed to establish a clinical correlation between the Glogau Photoaging Scale and VISIA-CR Complexion Analysis System. In doing so, decreasing intra- and inter-observer variability when assessing photodamage. METHODS One-hundred seventeen subjects between ages 18 and 89 were included. 2D facial photographs were analyzed by three independent reviewers and were assigned Glogau scores. Images were also captured and analyzed using VISIA software. Data was grouped by median Glogau score and compared between groups. RESULTS All groups were statistically different (p < 0.05) for Spots, Wrinkles and Remasked Wrinkles, except for Glogau 1 and 2 for Spots and Remasked Wrinkles. Wrinkles scores were plotted against age, and an exponential regression model was noted to be a better fit (R 2 = 0.5) compared to a linear model (R 2 = 0.47). The same was true for Spots with an exponential (R 2 = 0.36) compared to linear model (R 2 = 0.33). Scores were also evaluated based on sun exposure history, of which there were no significant differences. CONCLUSIONS The results illustrate that an imaging system can be used to reliably determine objective scores correlating to Glogau photoaging evaluations. Results also supported that aging more closely resembles an exponential process. Collectively, these findings will prove useful to those hoping to further investigate facial aging and therapeutic options available for facial skin rejuvenation and objectively assessing their outcomes.
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Affiliation(s)
- Sydney Oesch
- Department of Obstetrics and Gynecology, University of Texas Southwestern Medical Center , Dallas, TX , USA
| | - Nicole R Vingan
- Department of Plastic Surgery, University of Texas Southwestern Medical Center , Dallas, TX , USA
| | - Xingchen Li
- Division of Plastic Surgery, Penn State Health Milton S. Hershey Medical Center , Hershey, PA , USA
| | - John Hoopman
- Department of Plastic Surgery, University of Texas Southwestern Medical Center , Dallas, TX , USA
| | - Yucel Akgul
- Department of Plastic Surgery, University of Texas Southwestern Medical Center , Dallas, TX , USA
| | - Jeffrey M Kenkel
- Department of Plastic Surgery, University of Texas Southwestern Medical Center , Dallas, TX , USA
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11
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Zhang Y, Liu X, Wang J, Du L, Ma Y, Liu W, Ye R, Yang Y, Xu H. Analysis of Multi-Part Phenotypic Changes in Skin to Characterize the Trajectory of Skin Aging in Chinese Women. Clin Cosmet Investig Dermatol 2022; 15:631-642. [PMID: 35444440 PMCID: PMC9013710 DOI: 10.2147/ccid.s349401] [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: 11/21/2021] [Accepted: 03/27/2022] [Indexed: 11/30/2022]
Abstract
Purpose As the human body’s largest organ exposed to the external environment, the skin suffers from internal and external aging factors, leading to wrinkles, loss of elasticity, sagging, and rough appearance. However, little is known of the characteristics of skin aging of different body parts in Chinese women. Here, we study the signs of extrinsic skin aging in different body parts to identify the knowledge map of manifestations of aging in Chinese women. Patients and Methods Wrinkle and texture phenotypes and collagen samples from the face, neck, hands, and arms of 326 Chinese women were collected. The correlations between phenotypes and ages and the differences in phenotypes by age were evaluated. Results The wrinkle and texture phenotypes around the eyes and mouth and of the hands were strongly correlated with age. Ages 32 and 58 showed the largest number of differentially changed aging phenotypes. The number of aging phenotypes increased sharply between the ages of 24 and 30, suggesting that the skin was undergoing rapid aging. Eye aging was the most rapidly changing phenotype between 19 and 30 years old. Wrinkles at the corner of the eyes showed a significant difference in the older group, suggesting an early onset and long-term effects. Conclusion This is the first study to be performed on the characteristics of skin aging among Chinese women that takes account of multiple areas of the body. It was found that 24 years old was the time point at which the skin begins to age in Chinese women. This provides important clues for aging-related research and personalized skin care.
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Affiliation(s)
- Yan Zhang
- Department of Dermatology, Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Xiaoyu Liu
- Department of Molecular Diagnostics & Endocrinology, The Core Laboratory in Medical Center of Clinical Research, State Key Laboratory of Medical Genomics, Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China.,Inertiabiotech Co., LTD, Shanghai, People's Republic of China
| | - Jingpu Wang
- Inertiabiotech Co., LTD, Shanghai, People's Republic of China
| | - Le Du
- Inertiabiotech Co., LTD, Shanghai, People's Republic of China
| | - Yanyun Ma
- Human Phenome Institute, Fudan University, Shanghai, People's Republic of China.,State Key Laboratory of Genetic Engineering, Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai, People's Republic of China.,Institute for Six-Sector Economy, Fudan University, Shanghai, People's Republic of China
| | - Wei Liu
- Department of Dermatology, The Medical Center of Air Force PLA, Beijing, People's Republic of China
| | - Rui Ye
- Inertiabiotech Co., LTD, Shanghai, People's Republic of China
| | - Yali Yang
- Department of Dermatology, Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Hui Xu
- Department of Dermatology, Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
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12
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Wu Q, Bai P, Guo H, Guo MSS, Xia Y, Xia Y, Gao X, Wang X, Wu J, Dong TTX, Tsim KWK. Capsaicin, a Phytochemical From Chili Pepper, Alleviates the Ultraviolet Irradiation-Induced Decline of Collagen in Dermal Fibroblast via Blocking the Generation of Reactive Oxygen Species. Front Pharmacol 2022; 13:872912. [PMID: 35370728 PMCID: PMC8967157 DOI: 10.3389/fphar.2022.872912] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 02/28/2022] [Indexed: 02/03/2023] Open
Abstract
Capsaicin, a major ingredient in chili pepper, has broad pharmaceutical applications, including relieving pain, anti-inflammation, and treating psoriasis. In dermatological biology, capsaicin has been shown to prevent the ultraviolet (UV)-induced melanogenesis via TRPV1 receptor. To strengthen the roles of capsaicin in skin function, the damaged skin, triggered by exposure to UV, was reversed by capsaicin in both in vitro and in vivo models. In cultured dermal fibroblasts, the exposure to UV induced a decrease of collagen synthesis and increases expression of matrix metalloproteinases (MMPs), generation of reactive oxygen species (ROS), and phosphorylation of Erk and c-Jun, and these events subsequently led to skin damage. However, the UV-mediated damages could be reversed by pre-treatment with capsaicin in a dose-dependent manner. The effect of capsaicin in blocking the UV-mediated collagen synthesis was mediated by reducing generation of ROS in dermal fibroblasts, instead of the receptor for capsaicin. Hence, capsaicin has high potential value in applying as an agent for anti-skin aging in dermatology.
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Affiliation(s)
- Qiyun Wu
- Division of Life Science and Center for Chinese Medicine, The Hong Kong University of Science and Technology, Hong Kong, Hong Kong SAR, China.,Shenzhen Key Laboratory of Edible and Medicinal Bioresources, HKUST Shenzhen Research Institute, Shenzhen, China
| | - Panzhu Bai
- Division of Life Science and Center for Chinese Medicine, The Hong Kong University of Science and Technology, Hong Kong, Hong Kong SAR, China
| | - Hongsheng Guo
- Division of Life Science and Center for Chinese Medicine, The Hong Kong University of Science and Technology, Hong Kong, Hong Kong SAR, China
| | - Maggie S S Guo
- Division of Life Science and Center for Chinese Medicine, The Hong Kong University of Science and Technology, Hong Kong, Hong Kong SAR, China
| | - Yingjie Xia
- Division of Life Science and Center for Chinese Medicine, The Hong Kong University of Science and Technology, Hong Kong, Hong Kong SAR, China
| | - Yiteng Xia
- Division of Life Science and Center for Chinese Medicine, The Hong Kong University of Science and Technology, Hong Kong, Hong Kong SAR, China
| | - Xiong Gao
- Division of Life Science and Center for Chinese Medicine, The Hong Kong University of Science and Technology, Hong Kong, Hong Kong SAR, China
| | - Xiaoyang Wang
- Division of Life Science and Center for Chinese Medicine, The Hong Kong University of Science and Technology, Hong Kong, Hong Kong SAR, China
| | - Jiahui Wu
- Division of Life Science and Center for Chinese Medicine, The Hong Kong University of Science and Technology, Hong Kong, Hong Kong SAR, China.,Shenzhen Key Laboratory of Edible and Medicinal Bioresources, HKUST Shenzhen Research Institute, Shenzhen, China
| | - Tina T X Dong
- Division of Life Science and Center for Chinese Medicine, The Hong Kong University of Science and Technology, Hong Kong, Hong Kong SAR, China.,Shenzhen Key Laboratory of Edible and Medicinal Bioresources, HKUST Shenzhen Research Institute, Shenzhen, China
| | - Karl W K Tsim
- Division of Life Science and Center for Chinese Medicine, The Hong Kong University of Science and Technology, Hong Kong, Hong Kong SAR, China.,Shenzhen Key Laboratory of Edible and Medicinal Bioresources, HKUST Shenzhen Research Institute, Shenzhen, China
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13
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Wang M, Li H, Zhang X, Yang L, Liu Y, Liu S, Sun Y, Zhao C. An analysis of skin thickness in the Dezhou donkey population and identification of candidate genes by RNA-seq. Anim Genet 2022; 53:368-379. [PMID: 35307856 DOI: 10.1111/age.13196] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 02/20/2022] [Accepted: 03/11/2022] [Indexed: 12/17/2022]
Abstract
The aim of the present study was to analyze the main factors that have a significant impact on skin thickness, and to further identify the genes and signaling pathways regulating skin growth by RNA-seq in Dezhou donkeys. Skin samples from different body regions of 15 slaughtered donkeys were obtained to study variations in skin thickness over the bodies. Skin thickness data for another 514 donkeys was obtained by minimally invasive skin sampling from the back, and measurements of the donkeys' body size traits and pedigree data were also collected. These data were used to analyze changes in skin thickness and estimate genetic parameters. In addition, transcriptomic analysis was conducted on the skin tissues of individuals from two groups with significant differences in skin thickness. Our results showed that skin thickness over the bodies ranged from 1.08 to 4.36 mm. The skin from the back was the thickest and had the highest correlation with that of other regions of the body. The skin thickness decreased from the back to the side of the ventral abdomen, and the skin thickness on the limbs increased from the proximal end to the distal end. The results also showed that the skin from the same body regions of jacks was thicker than that of jennies in the same age group. The skin thickness of jennies increased from birth to the age of 2 and then clearly decreased after 2 years of age. The estimated heritability of skin thickness was 0.15, and the genetic correlations between skin thickness and body size traits were negligible. Transcriptome analysis showed that the thick-skin group had 65 up-regulated genes and 38 down-regulated genes compared with the thin-skin group. The differentially expressed genes were highly enriched in epidermal development and cell adhesion molecule signaling pathways. We identified the candidate genes responsible for variations in skin thickness in the Dezhou donkey, including KRT10, KRT1, CLDN9, MHCII and MMP28. These results contribute to a better understanding of the growth and development of donkey skin, reveal the molecular mechanism responsible for donkey skin thickness and suggest directions for genetic selection in the Dezhou donkey population.
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Affiliation(s)
- Min Wang
- College of Animal Science and Technology, China Agricultural University, Beijing, China.,Equine Center, China Agricultural University, Beijing, China.,Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture, Beijing, China.,Laboratory of Animal Genetics Resource and Molecular Breeding, China Agricultural University, Beijing, China.,National Engineering Laboratory for Animal Breeding, Beijing, China
| | - Haijing Li
- National Engineering Research Center for Gelatin-Based Traditional Chinese Medicine, Dong-E E-Jiao Co. Ltd, Liaocheng, China
| | - Xinhao Zhang
- National Engineering Research Center for Gelatin-Based Traditional Chinese Medicine, Dong-E E-Jiao Co. Ltd, Liaocheng, China
| | - Li Yang
- National Engineering Research Center for Gelatin-Based Traditional Chinese Medicine, Dong-E E-Jiao Co. Ltd, Liaocheng, China
| | - Yu Liu
- College of Animal Science and Technology, China Agricultural University, Beijing, China.,Equine Center, China Agricultural University, Beijing, China.,Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture, Beijing, China.,Laboratory of Animal Genetics Resource and Molecular Breeding, China Agricultural University, Beijing, China.,National Engineering Laboratory for Animal Breeding, Beijing, China
| | - Shuqin Liu
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, China
| | - Yujiang Sun
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, China
| | - Chunjiang Zhao
- College of Animal Science and Technology, China Agricultural University, Beijing, China.,Equine Center, China Agricultural University, Beijing, China.,Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture, Beijing, China.,Laboratory of Animal Genetics Resource and Molecular Breeding, China Agricultural University, Beijing, China.,National Engineering Laboratory for Animal Breeding, Beijing, China
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14
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Development of an Aged Full-Thickness Skin Model Using Flexible Skin-on-a-Chip Subjected to Mechanical Stimulus Reflecting the Circadian Rhythm. Int J Mol Sci 2021; 22:ijms222312788. [PMID: 34884594 PMCID: PMC8657468 DOI: 10.3390/ijms222312788] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Revised: 11/24/2021] [Accepted: 11/25/2021] [Indexed: 12/27/2022] Open
Abstract
The skin is subject to both intrinsic aging caused by metabolic processes in the body and extrinsic aging caused by exposure to environmental factors. Intrinsic aging is an important obstacle to in vitro experimentation as its long-term progression is difficult to replicate. Here, we accelerated aging of a full-thickness skin equivalent by applying periodic mechanical stimulation, replicating the circadian rhythm for 28 days. This aging skin model was developed by culturing a full-thickness, three-dimensional skin equivalent with human fibroblasts and keratinocytes to produce flexible skin-on-a-chip. Accelerated aging associated with periodic compressive stress was evidenced by reductions in the epidermal layer thickness, contraction rate, and secretion of Myb. Increases in β-galactosidase gene expression and secretion of reactive oxygen species and transforming growth factor-β1 were also observed. This in vitro aging skin model is expected to greatly accelerate drug development for skin diseases and cosmetics that cannot be tested on animals.
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15
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Jing R, Guo K, Zhong Y, Wang L, Zhao J, Gao B, Ye Z, Chen Y, Li X, Xu N, Xuan X. Protective effects of fucoidan purified from Undaria pinnatifida against UV-irradiated skin photoaging. ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:1185. [PMID: 34430626 PMCID: PMC8350689 DOI: 10.21037/atm-21-3668] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Accepted: 07/22/2021] [Indexed: 12/15/2022]
Abstract
Background Exposure to ultraviolet (UV) radiation (UVB and UVA) is the most well-known extrinsic factor that induces skin aging. Fucoidan has been shown to possess antiphotoaging effects against UV irradiation and can be used as an ingredient in the pharmaceutical industry. The present study evaluated the photoprotective effect of fucoidan purified from Undaria pinnatifida (UPF) on UV-induced skin photoaging and explored its potential molecular mechanism. Methods To evaluate the effect of UPF on UV-induced skin aging, HaCaT cells and HFF-1 cells were pretreated with or without UPF and then exposed to UVB and UVA radiation, respectively, and the levels of cellular senescence, reactive oxygen species (ROS) production and mitochondrial dysfunction were evaluated. The mitochondrial ROS (mROS) was stained through MitoSOX, and the confocal microscope was used to capture the images. For further exploration of AMPK/SIRT-1/PGC-1α signaling, western blot was employed. Results The results demonstrated that pretreatment of HaCaT and HFF-1 cells with UPF ameliorated cellular senescence, ROS and mROS overproduction, and mitochondrial dysfunction caused by UV exposure. This research also revealed that UPF could activate the AMPK/SIRT-1/PGC-1α signaling pathway to promote mitochondrial biogenesis. Conclusions UPF can ameliorate UV-induced skin photoaging through inhibition of ROS production via the alleviation of mitochondrial dysfunction by regulating the SIRT-1/PGC-1α signaling pathway.
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Affiliation(s)
- Rongrong Jing
- College of Life and Environmental Sciences, Wenzhou University, Wenzhou, China
| | - Keke Guo
- College of Life and Environmental Sciences, Wenzhou University, Wenzhou, China
| | - Yulan Zhong
- College of Life and Environmental Sciences, Wenzhou University, Wenzhou, China
| | - Lusheng Wang
- College of Life and Environmental Sciences, Wenzhou University, Wenzhou, China
| | - Jungang Zhao
- College of Life and Environmental Sciences, Wenzhou University, Wenzhou, China
| | - Bingyan Gao
- College of Life and Environmental Sciences, Wenzhou University, Wenzhou, China
| | - Ziyi Ye
- College of Life and Environmental Sciences, Wenzhou University, Wenzhou, China
| | - Yu Chen
- College of Life and Environmental Sciences, Wenzhou University, Wenzhou, China
| | - Xuenan Li
- College of Life and Environmental Sciences, Wenzhou University, Wenzhou, China
| | - Nuo Xu
- College of Life and Environmental Sciences, Wenzhou University, Wenzhou, China
| | - Xuan Xuan
- Department of Dermatology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
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16
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Cannarozzo G, Fazia G, Bennardo L, Tamburi F, Amoruso GF, Del Duca E, Nisticò SP. A New 675 nm Laser Device in the Treatment of Facial Aging: A Prospective Observational Study. PHOTOBIOMODULATION PHOTOMEDICINE AND LASER SURGERY 2021; 39:118-122. [DOI: 10.1089/photob.2020.4908] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
| | - Gilda Fazia
- Department of Dermatology, Magna Graecia University, Catanzaro, Italy
| | - Luigi Bennardo
- Department of Dermatology, Magna Graecia University, Catanzaro, Italy
| | - Federica Tamburi
- Department of Dermatology, Magna Graecia University, Catanzaro, Italy
| | | | - Ester Del Duca
- Department of Dermatology, Magna Graecia University, Catanzaro, Italy
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17
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Persa OD, Koester J, Niessen CM. Regulation of Cell Polarity and Tissue Architecture in Epidermal Aging and Cancer. J Invest Dermatol 2021; 141:1017-1023. [PMID: 33531135 DOI: 10.1016/j.jid.2020.12.012] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 12/22/2020] [Accepted: 12/23/2020] [Indexed: 12/15/2022]
Abstract
The mammalian skin is essential to protect the organism from external damage while at the same time enabling communication with the environment. Aging compromises skin function and regeneration, which is further exacerbated by external influences, such as UVR from the sun. Aging and UVR are also major risk factors contributing to the development of skin cancer. Whereas aging research traditionally has focused on the role of DNA damage and metabolic and stress pathways, less is known about how aging affects tissue architecture and cell dynamics in skin homeostasis and regeneration and whether changes in these processes promote skin cancer. This review highlights how key regulators of cell polarity and adhesion affect epidermal mechanics, tissue architecture, and stem cell dynamics in skin aging and cancer.
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Affiliation(s)
- Oana D Persa
- Department Cell Biology of the Skin, University of Cologne, Cologne, Germany; Cologne Excellence Cluster on Stress Responses in Aging-associated Diseases (CECAD), University of Cologne, Cologne, Germany; Department of Dermatology and Venerology, University Hospital of Cologne, Cologne, Germany; Center for Molecular Medicine Cologne, University of Cologne, Cologne, Germany
| | - Janis Koester
- Cologne Excellence Cluster on Stress Responses in Aging-associated Diseases (CECAD), University of Cologne, Cologne, Germany; Max Planck Institute for Biology of Ageing, Cologne, Germany
| | - Carien M Niessen
- Department Cell Biology of the Skin, University of Cologne, Cologne, Germany; Cologne Excellence Cluster on Stress Responses in Aging-associated Diseases (CECAD), University of Cologne, Cologne, Germany; Center for Molecular Medicine Cologne, University of Cologne, Cologne, Germany.
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18
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Zagórska-Dziok M, Ziemlewska A, Nizioł-Łukaszewska Z, Bujak T. Antioxidant Activity and Cytotoxicity of Medicago sativa L. Seeds and Herb Extract on Skin Cells. Biores Open Access 2020; 9:229-242. [PMID: 33117615 PMCID: PMC7590823 DOI: 10.1089/biores.2020.0015] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/20/2020] [Indexed: 12/28/2022] Open
Abstract
In response to the constantly growing demand for high quality cosmetics we observe an increasing interest in products containing natural plant extracts. This article attempts to assess the antioxidant and cytotoxic properties of extracts from alfalfa herb and seeds (Medicago sativa L.). These extracts were obtained using ultrasound-assisted extraction method. The research was carried out on two cell lines: fibroblasts and keratinocytes. The obtained results show that the examined extracts from M. sativa L. are a source of valuable biologically active agents. Both extracts were characterized by high content of flavonoids and phenolic compounds. Evaluation of antioxidant properties of extracts using DPPH• radical indicated that the alfalfa extracts can efficiently scavenge free radicals. The results of the conducted experiments demonstrated that the M. sativa L. extracts do not only have an inhibitory effect on free radicals existing in the external environment of the cell, but also have the ability to reduce the intracellular reactive oxygen species level, which may contribute to the reduction of oxidative stress inside the cells. Studies performed using cell lines indicated that the tested extracts increase the proliferation and metabolism of skin cells in vitro. The high antioxidant capacity of M. sativa L. extracts may indicate its potential use as a valuable ingredient in the cosmetics and pharmaceutical industries.
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Affiliation(s)
- Martyna Zagórska-Dziok
- Department of Technology of Cosmetic and Pharmaceutical Products, University of Information Technology and Management in Rzeszow, Tyczyn, Poland
| | - Aleksandra Ziemlewska
- Department of Technology of Cosmetic and Pharmaceutical Products, University of Information Technology and Management in Rzeszow, Tyczyn, Poland
| | - Zofia Nizioł-Łukaszewska
- Department of Technology of Cosmetic and Pharmaceutical Products, University of Information Technology and Management in Rzeszow, Tyczyn, Poland
| | - Tomasz Bujak
- Department of Technology of Cosmetic and Pharmaceutical Products, University of Information Technology and Management in Rzeszow, Tyczyn, Poland
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19
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Mohamed R, Pérez W, da Veiga ML. Histomorphometrical study on the skin of different regions of the Caribbean common opossum (Didelphis marsupialis Linnaeus, 1758). Anat Histol Embryol 2020; 50:144-150. [PMID: 32894611 DOI: 10.1111/ahe.12612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 07/20/2020] [Accepted: 08/11/2020] [Indexed: 11/30/2022]
Abstract
Common opossums (Didelphis marsupialis) are found throughout the Caribbean island of Trinidad and Tobago. The present work was conducted on the fresh normal skin of 10 common opossums and aimed to provide morphometric data and a histological description of the skin in different regions of the body. In the examined regions, the skin presented a typical thin skin morphology, with numerous folds on the surface. The dermis-epidermis junction is smooth, without the occurrence of dermal papillae. The average thickness of the opossum epidermis was 19.5 µm. The cranial region of the back showed the greatest epidermal thickness, and together with the other areas of the back presented an epidermis 2-3 times thicker compared with the other areas examined. To further confirm that the skin changes in the opossum are age- or diet-related, additional studies are required.
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Affiliation(s)
- Reda Mohamed
- Department of Basic Veterinary Sciences, School of Veterinary Medicine, Faculty of Medical Sciences, The University of the West Indies, St. Augustine, Republic of Trinidad and Tobago.,Department of Anatomy and Embryology, Faculty of Veterinary Medicine, Beni- Suef University, Beni -Suef, Egypt
| | - William Pérez
- Área de Anatomía, Facultad de Veterinaria, Universidad de la República, Montevideo, Uruguay
| | - Marcelo Leite da Veiga
- Department of Morphology, Federal University of Santa Maria, Cidade Universitária, Santa Maria, Brasil
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20
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Xia MQ, Tian CL, Liu L, Hu RF, Gui SY, Chu XQ. Transdermal Administration of Ibuprofen-Loaded Gel: Preparation, Pharmacokinetic Profile, and Tissue Distribution. AAPS PharmSciTech 2020; 21:84. [PMID: 31989358 DOI: 10.1208/s12249-020-1627-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Accepted: 01/15/2020] [Indexed: 02/06/2023] Open
Abstract
The purpose of this study was to compare the pharmacokinetics and tissue distribution of ibuprofen (IBU) gel in female rats after transdermal administration through the skin of the abdomen and back. IBU was used as the model drug to prepare carbomer gel. After the abdominal and back administration, the concentration of IBU in rat plasma was detected by high-performance liquid chromatography (HPLC). Besides, the contents of IBU in the uterus, heart, liver, spleen, lung, and kidney were detected, respectively, to clarify the distribution characteristics in vivo. Through abdominal route, the AUC0- ∞ (area under the concentration-time curve from time zero to infinity) of uterus was 424.75 μg/g h, which is 3.60 times higher than that of plasma, and was significantly higher than that of other tissues (P < 0.0001). Tmax (peak time) of uterus and plasma was 4 h and 2 h, respectively. Upon transdermal application of IBU to the back, the AUC0-∞ of uterus was 75.47 μg/g h, which is 12.63 times lower than that of plasma, while Tmax of uterus and plasma was not lower than 20 h. These results indicated that IBU entered the blood circulation through abdominal administration in a small amount and mainly of the drug entered the uterus, while IBU entered the blood circulation and redistributed to tissues after absorption through the dorsal skin slowly. IBU could effectively reach the uterus and have a certain targeting through abdominal administration, which provides a prospect for clinical transdermal administration in the treatment of dysmenorrhea.
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Sukhovei Y, Kostolomova E, Unger I, Koptyug A, Kaigorodov D. Difference between the biologic and chronologic age as an individualized indicator for the skin care intensity selection: skin topography and immune system state studies, parameter correlations with age difference. BIOMEDICAL DERMATOLOGY 2020. [DOI: 10.1186/s41702-019-0050-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/23/2023]
Abstract
Abstract
Background
Present research addresses the issue of skin aging and corresponding skin treatment individualization. Particular research question was on the developing of simplified criterion supporting patient-specific decision on the necessity and intensity of skin treatment. Basing on the published results and a wide pool of experimental data, we have formulated a hypothesis that a difference between biologic and chronologic age can be used as an express criterion of skin aging.
Methods
In present paper, we report the results of studies with 80 volunteers between 15 and 65 years of age, linking parameters reflecting immune state, skin state, and topography to the difference between biologic and chronologic age. Facial skin topography, skin moisture, sebum level, and skin elasticity were studied using commercial devices. Blood immunology studies were performed using venous blood samples. Correlations between all measured parameters and age difference were calculated. Also, cross correlations between skin cell profile and blood immune profile parameters, and skin roughness parameters were calculated.
Results
Age dependencies of the blood immunological parameters on the biologic and chronologic age difference are less pronounced as compared to the changes in skin cell profile parameters. However, the changes in the tendencies when biologic age becomes equal to chronologic one are visible for all studied parameters.
All measured skin roughness parameters show correlations with age difference, but average skin roughness and depth of the deepest profile valley have the largest correlation coefficient values. Many of the measured skin cell profile and blood immunology parameters show strong correlations with average skin roughness and deepest profile valley, with some of the coefficients exceeding 0.5–0.6.
Conclusions
Basing on own experiments and published research results, it is possible to suggest using the difference between calculated biologic age and chronologic age as an individualized criterion supporting decisions on skin treatment strategy. Further research involving larger numbers of participants and aiming on optimizing the expressions for calculating biologic age could lead to reliable and easily available express criterion supporting the decision making for an individualized skin treatment.
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The Impact of Herbal Products in the Prevention, Regeneration and Delay of Skin Aging. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1178:155-174. [PMID: 31493227 DOI: 10.1007/978-3-030-25650-0_9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Skin aging is a complex process induced by intrinsic and extrinsic factors and causes alterations to the structural and functional aspects of the skin. Skin aging affects patients physically and physiologically. Understanding the process of skin aging can provide new knowledge on how to attenuate or reduce skin disorder symptoms. Herbs have been used for ages to prevent and treat skin aging, yet there are growing interests by researchers in this field globally. Various strategies have been developed for improving the quality and effectivity of herbal skin care products, both for topical and oral applications. This review will provide an overview of the relationship between herbal skin care products and the skin aging process.
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Tsuboi H, Yokota I, Miyamori D, Akasaka Y, Yamada A, Ikegaya H. Age estimation based on visual parameters of the skin of cadavers. Skin Res Technol 2019; 25:532-537. [PMID: 30767271 DOI: 10.1111/srt.12683] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Revised: 12/25/2018] [Accepted: 01/12/2019] [Indexed: 12/27/2022]
Abstract
BACKGROUND Previous studies have reported relationships between various visual parameters of the skin and changes due to aging. Due to an increase in the discovery of unidentified bodies, the field of forensic medicine anticipates the development of a rapid method for estimating age. The present study measured various visual parameters of the skin in human remains and investigated the correlation between these parameters and age. MATERIALS AND METHODS Skin images were taken of four body parts (cheek, chin, brachium, and thigh) of 414 forensic cases. We interpreted eight visual parameters of the skin (smoothness, roughness, texture, dullness, brightness, erythema, color phase, and sagging) from skin photograph images, and constructed three age-prediction models, categorized by sex, postmortem interval, and age. RESULTS Significant correlations were observed in the erythema of the cheek and chin, the roughness of the brachium, and the texture of the brachium and thigh among the visual parameters calculated in four body parts, using the three models. The root-mean-square errors, which indicate the precision of the three prediction models, were 13.06, 13.80, and 13.77. The only model that demonstrated a correlation with the visual parameters was sex (but not age or postmortem interval). CONCLUSION Similar to living subjects, we observed a correlation with age for a number of visual parameters. The parameters that correlate with age depend on whether the site being measured was exposed to sunlight. Age estimation based on visual parameters requires measurement of visual parameters for skin both exposed and not exposed to sunlight.
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Affiliation(s)
- Hajime Tsuboi
- Department of Forensic Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Isao Yokota
- Department of Biostatistics, Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Daisuke Miyamori
- Department of Forensic Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Yoshihisa Akasaka
- Department of Forensic Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Ayumu Yamada
- Department of Forensic Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Hiroshi Ikegaya
- Department of Forensic Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
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Sparavigna A, Tenconi B, Giori AM, Bellia G, La Penna L. Evaluation of the efficacy of a new hyaluronic acid gel on dynamic and static wrinkles in volunteers with moderate aging/photoaging. Clin Cosmet Investig Dermatol 2019; 12:81-90. [PMID: 30697060 PMCID: PMC6340359 DOI: 10.2147/ccid.s191935] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Purpose Aim of the study was to determine both clinically and by noninvasive instrumental evaluations the efficacy, tolerability and the duration of the effects of a new hyaluronic acid (HA) gel in human volunteers with moderate aging/photoaging. Patients and methods Eighteen volunteers (35–55 years) were enrolled in this single-center study. The subjects underwent five visits. The first visit was at baseline to determine the adherence to the inclusion criteria, followed by the first injection of the HA-based study product, and the second visit was at 48 hours after the injection. Two months later, a second injection was given (Visit 3) followed by a subsequent visit (Visit 4) after 48 hours. The last visit (Visit 5) was performed 5 months after the first injection. Clinical and instrumental evaluations as well as self-assessment by the subjects were recorded at each visit. Results A significant improvement of wrinkles’ grade around the eyes, vertical lip lines and wrinkles’ severity of nasolabial folds was recorded after the first injection and the effect increased after the second injection. Aging/photoaging grade and surface microrelief improved 2 months after the first injection procedure. These clinical improvements were paralleled by amelioration of instrumental skin profilometry and optical colorimetry. The treatments were very well tolerated by the volunteers as determined by the self-grading score. Conclusion The results confirm the good esthetic performance and the duration of the effect of the HA-based study product (Viscoderm® Hydrobooster) on dynamic facial wrinkles and/or static facial lines. These effects were particularly evident after the second injection and were accompanied by a good tolerability of the product.
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Affiliation(s)
- Adele Sparavigna
- DERMING S.r.l., Clinical Research and Bioengineering Institute, Milan, Italy,
| | - Beatrice Tenconi
- DERMING S.r.l., Clinical Research and Bioengineering Institute, Milan, Italy,
| | | | - Gilberto Bellia
- Dermoaesthetic Business Unit, IBSA Farmaceutici Italia, Lodi, Italy
| | - Laura La Penna
- DERMING S.r.l., Clinical Research and Bioengineering Institute, Milan, Italy,
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Investigation into the potential for post-mortem formation of carboxyhemoglobin in bodies retrieved from fires. Forensic Sci Med Pathol 2018; 14:342-348. [PMID: 29971695 DOI: 10.1007/s12024-018-9998-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/05/2018] [Indexed: 10/28/2022]
Abstract
The forensic investigation of a deceased person retrieved following a fire includes measuring carboxyhemoglobin. A carboxyhemoglobin saturation above 10% is considered indicative of respiration during a fire, implying the person had been alive. This relies on the assumption that carbon monoxide will not diffuse into blood used for toxicological analysis. This project investigated the potential for carbon monoxide to passively diffuse into a body and if carboxyhemoglobin levels could become elevated post-mortem. Stillborn piglets with intact skin were exposed to carbon monoxide. Carboxyhemoglobin formed in the hypostasis of the skin, but carboxyhemoglobin levels in blood from the heart and chest cavities were not significantly elevated. However, defects in the skin over body cavities (producing breaches to replicate cases with stab wounds or heat damage) resulted in cavity blood carboxyhemoglobin levels above 10%. A review of fire death cases in South Australia 2000-2015 was performed to determine the origin of the blood samples used for toxicological analysis and the incidence of cases with breaches of body cavities. This revealed a small number of cases in which blood from the cavities had been analyzed when cavity breaches were present. Thus, there is a potential for significant elevation of carboxyhemoglobin saturation post-mortem in forensic casework involving bodies retrieved from fires.
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Zhang S, Duan E. Fighting against Skin Aging: The Way from Bench to Bedside. Cell Transplant 2018; 27:729-738. [PMID: 29692196 PMCID: PMC6047276 DOI: 10.1177/0963689717725755] [Citation(s) in RCA: 354] [Impact Index Per Article: 50.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Revised: 07/05/2017] [Accepted: 07/14/2017] [Indexed: 12/31/2022] Open
Abstract
As the most voluminous organ of the body that is exposed to the outer environment, the skin suffers from both intrinsic and extrinsic aging factors. Skin aging is characterized by features such as wrinkling, loss of elasticity, laxity, and rough-textured appearance. This aging process is accompanied with phenotypic changes in cutaneous cells as well as structural and functional changes in extracellular matrix components such as collagens and elastin. In this review, we summarize these changes in skin aging, research advances of the molecular mechanisms leading to these changes, and the treatment strategies aimed at preventing or reversing skin aging.
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Affiliation(s)
- Shoubing Zhang
- Department of Histology and Embryology, School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui, China
- Central laboratory of Molecular and Cellular Biology, School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui, China
| | - Enkui Duan
- State Key Lab of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
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