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Muresan XM, Sticozzi C, Belmonte G, Savelli V, Evelson P, Valacchi G. Modulation of cutaneous scavenger receptor B1 levels by exogenous stressors impairs "in vitro" wound closure. Mech Ageing Dev 2017; 172:78-85. [PMID: 29102450 DOI: 10.1016/j.mad.2017.11.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Revised: 08/30/2017] [Accepted: 11/01/2017] [Indexed: 01/01/2023]
Abstract
Scavenger receptor B1 (SR-B1) is a trans-membrane protein, involved in tissue reverse cholesterol transport. Several studies have demonstrated that SR-B1 is also implicated in other physiological processes, such as bacteria and apoptotic cells recognition and regulation of intracellular tocopherol and carotenoids levels. Among the tissues where it is localized, SR-B1 has been shown to be significantly expressed in human epidermis. Our group has demonstrated that SR-B1 levels are down-regulated in human cultured keratinocytes by environmental stressors, such as cigarette smoke, via cellular redox imbalance. Our present study aimed to investigate whether such down-regulation was confirmed in a 3D skin model and under other environmental challengers such as particulate matter and ozone. We also investigated the association between oxidation-induced SR-B1 modulation and impaired wound closure. The data obtained showed that not only cigarette, but also the other environmental stressors reduced SR-B1 expression in epidermal cutaneous tissues and that this effect might be involved in impaired wound healing.
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Affiliation(s)
| | - Claudia Sticozzi
- Dept. of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
| | - Giuseppe Belmonte
- Dept. of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
| | - Vinno Savelli
- Department of Medical, Surgery and Neurosciences, University of Siena, Siena, Italy
| | - Pablo Evelson
- Institute of Biochemistry and Molecular Medicine (IBIMOL-UBA-CONICET), Pharmacy and Biochemistry School, University of Buenos Aires, Buenos Aires, Argentina
| | - Giuseppe Valacchi
- Dept. of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy; Plants for Human Health Institute, Animal Sciences Dept., NC Research Campus, NC State University, NC, USA.
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Hayward CJ, Fradette J, Morissette Martin P, Guignard R, Germain L, Auger FA. Using human umbilical cord cells for tissue engineering: a comparison with skin cells. Differentiation 2014; 87:172-81. [PMID: 24930038 DOI: 10.1016/j.diff.2014.05.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2014] [Accepted: 05/15/2014] [Indexed: 01/04/2023]
Abstract
The epithelial cells and Wharton׳s jelly cells (WJC) from the human umbilical cord have yet to be extensively studied in respect to their capacity to generate tissue-engineered substitutes for clinical applications. Our reconstruction strategy, based on the self-assembly approach of tissue engineering, allows the production of various types of living human tissues such as skin and cornea from a wide range of cell types originating from post-natal tissue sources. Here we placed epithelial cells and WJC from the umbilical cord in the context of a reconstructed skin substitute in combination with skin keratinocytes and fibroblasts. We compared the ability of the epithelial cells from both sources to generate a stratified, differentiated skin-like epithelium upon exposure to air when cultured on the two stromal cell types. Conversely, the ability of the WJC to behave as dermal fibroblasts, producing extracellular matrix and supporting the formation of a differentiated epithelium for both types of epithelial cells, was also investigated. Of the four types of constructs produced, the combination of WJC and keratinocytes was the most similar to skin engineered from dermal fibroblasts and keratinocytes. When cultured on dermal fibroblasts, the cord epithelial cells were able to differentiate in vitro into a stratified multilayered epithelium expressing molecules characteristic of keratinocyte differentiation after exposure to air, and maintaining the expression of keratins K18 and K19, typical of the umbilical cord epithelium. WJC were able to support the growth and differentiation of keratinocytes, especially at the early stages of air-liquid culture. In contrast, cord epithelial cells cultured on WJC did not form a differentiated epidermis when exposed to air. These results support the premise that the tissue from which cells originate can largely affect the properties and homoeostasis of reconstructed substitutes featuring both epithelial and stromal compartments.
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Affiliation(s)
- Cindy J Hayward
- Centre de recherche en organogénèse expérimentale de l'Université Laval/LOEX, Aile-R, Hôpital de l'Enfant-Jésus, Centre de recherche du CHU de Québec, 1401, 18e Rue, Québec, QC, Canada G1J 1Z4; Axe Médecine Régénératrice-Centre de recherche FRQS du CHU de Québec, Québec, QC, Canada; Département de Chirurgie, Faculté de Médecine, Université Laval, Québec, QC, Canada.
| | - Julie Fradette
- Centre de recherche en organogénèse expérimentale de l'Université Laval/LOEX, Aile-R, Hôpital de l'Enfant-Jésus, Centre de recherche du CHU de Québec, 1401, 18e Rue, Québec, QC, Canada G1J 1Z4; Axe Médecine Régénératrice-Centre de recherche FRQS du CHU de Québec, Québec, QC, Canada; Département de Chirurgie, Faculté de Médecine, Université Laval, Québec, QC, Canada.
| | - Pascal Morissette Martin
- Centre de recherche en organogénèse expérimentale de l'Université Laval/LOEX, Aile-R, Hôpital de l'Enfant-Jésus, Centre de recherche du CHU de Québec, 1401, 18e Rue, Québec, QC, Canada G1J 1Z4; Axe Médecine Régénératrice-Centre de recherche FRQS du CHU de Québec, Québec, QC, Canada; Département de Chirurgie, Faculté de Médecine, Université Laval, Québec, QC, Canada.
| | - Rina Guignard
- Centre de recherche en organogénèse expérimentale de l'Université Laval/LOEX, Aile-R, Hôpital de l'Enfant-Jésus, Centre de recherche du CHU de Québec, 1401, 18e Rue, Québec, QC, Canada G1J 1Z4; Axe Médecine Régénératrice-Centre de recherche FRQS du CHU de Québec, Québec, QC, Canada.
| | - Lucie Germain
- Centre de recherche en organogénèse expérimentale de l'Université Laval/LOEX, Aile-R, Hôpital de l'Enfant-Jésus, Centre de recherche du CHU de Québec, 1401, 18e Rue, Québec, QC, Canada G1J 1Z4; Axe Médecine Régénératrice-Centre de recherche FRQS du CHU de Québec, Québec, QC, Canada; Département de Chirurgie, Faculté de Médecine, Université Laval, Québec, QC, Canada.
| | - François A Auger
- Centre de recherche en organogénèse expérimentale de l'Université Laval/LOEX, Aile-R, Hôpital de l'Enfant-Jésus, Centre de recherche du CHU de Québec, 1401, 18e Rue, Québec, QC, Canada G1J 1Z4; Axe Médecine Régénératrice-Centre de recherche FRQS du CHU de Québec, Québec, QC, Canada; Département de Chirurgie, Faculté de Médecine, Université Laval, Québec, QC, Canada.
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Zhang R, Gong J, Wang H, Wang L. Bile salts inhibit growth and induce apoptosis of culture human normal esophageal mucosal epithelial cells. World J Gastroenterol 2005; 11:6466-71. [PMID: 16425417 PMCID: PMC4355787 DOI: 10.3748/wjg.v11.i41.6466] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the effect of six bile salts: glycocholate (GC), glycochenodeoxycholate (GCDC), glycodeoxycholate (GDC), taurocholate (TC), taurochenodeoxycholate (TCDC), taurodeoxycholate (TDC), and their mixture on cultured human normal esophageal mucosal epithelial cells.
METHODS: Human normal esophageal mucosal epithelial cells were cultured with serum-free keratinocyte medium. 3-[4,5-Dimethylthiaolyl]-2,5-diphenyl-tetrazolium bromide assay was applied to the detection of cell proliferation. Apoptotic morphology was observed by phase-contrast video microscopy and terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL) assay. Sub-G1 DNA fragmentations and early apoptotic cells were assayed by flow cytometry (FCM) with propidium iodide (PI) staining and annexin V-FITC conjugated with PI staining. Apoptotic DNA ladders on agarose gel electrophoresis were observed.
RESULTS: Except for GC, GCDC, GDC, TC, TCDC, TDC and their mixture could initiate growth inhibition of esophageal mucosal epithelial cells in a dose- and time-dependent manner. TUNEL and FCM assays demonstrated that the bile salts at 500 μmol/L and their mixture at 1 500 μmol/L induced apoptosis except for GC. The percentage of sub-G1 detected by FCM with PI staining was 83.5% in cells treated with 500 μmol/L TC for 2 h, and 19.8%, 20.4%, 25.6%, 13.5%, and 75.8% in cells treated with 500 μmol/L GCDC, TCDC, GDC, TDC, and 1 500 μmol/L mixture for 24 h, respectively, which were higher than that of the control (1.5%). The percentage was 1.4% in cells with 500 μmol/L GC for 24 h. DNA ladders on agarose gel electrophoresis were seen in cells treated with 500 μmol/L TC for 2 h and 1 500 μmol/L mixture for 24 h.
CONCLUSION: All GCDC, GDC, TC, TCDC, TDC and their mixture can inhibit growth and induce apoptosis of cultured human normal esophageal mucosal epithelial cells, but GC is well tolerated by the cells.
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Affiliation(s)
- Ru Zhang
- Digestive Department of the Second Hospital, Xioan Jiaotong University, Xioan 710004, Shaanxi Province, China
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Noël D, Dazard JE, Pelegrin M, Jacquet C, Piechaczyk M. Skin as a potential organ for ectopic monoclonal antibody production. J Invest Dermatol 2002; 118:288-94. [PMID: 11841546 DOI: 10.1046/j.0022-202x.2001.01625.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The therapeutic potential of monoclonal antibodies for treating a variety of severe or life-threatening diseases is high. Although intravenous infusion appears the simplest and most obvious mode of administration, it is not applicable to many long-term treatments. It might be advantageously replaced by gene/cell therapies, however, rendering treatments cost-effective and eliminating the short- and long-term side-effects associated with injection of massive doses of antibodies. We have tested whether skin can potentially be used as an organ for production and systemic delivery of ectopic antibodies. Normal human primary keratinocytes were shown to be capable of synthesis and secretion of a model monoclonal antibody directed against human thyroglobulin upon retroviral gene transduction in vitro. Neo- epidermis reconstructed in vitro, either in cell culture inserts or on dermal substrates, from such modified keratinocytes also produced the monoclonal antibody. Interestingly, the latter could cross the epidermis basal layer and be released in culture fluids. Finally, grafting of epidermis reconstituted in vitro on dermal substrates to SCID mice permitted sustained monoclonal antibody delivery into the bloodstream to be achieved. Our data thus show that genetically engineered keratinocytes can potentially be used for genetic antibody-based immunotherapies. They also indicate that proteins as big as 150 kDa, after release by engineered keratinocytes into skin intercellular spaces, can migrate to the general circulation, which is potentially important for a number of other gene-based therapies.
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Affiliation(s)
- Danièle Noël
- Institut de Génétique Moléculaire de Montpellier, UMR5535/IGR 24, Montpellier, France
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Hatse S, De Clercq E, Balzarini J. Role of antimetabolites of purine and pyrimidine nucleotide metabolism in tumor cell differentiation. Biochem Pharmacol 1999; 58:539-55. [PMID: 10413291 DOI: 10.1016/s0006-2952(99)00035-0] [Citation(s) in RCA: 123] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Transformed cells are characterized by imbalances in metabolic routes. In particular, different key enzymes of nucleotide metabolism and DNA biosynthesis, such as CTP synthetase, thymidylate synthase, dihydrofolate reductase, IMP dehydrogenase, ribonucleotide reductase, DNA polymerase, and DNA methyltransferase, are markedly up-regulated in certain tumor cells. Together with the concomitant down-modulation of the purine and pyrimidine degradation enzymes, the increased anabolic propensity supports the excessive proliferation of transformed cells. However, many types of cancer cells have maintained the ability to differentiate terminally into mature, non-proliferating cells not only in response to physiological receptor ligands, such as retinoic acid, vitamin D metabolites, and cytokines, but also following exposure to a wide variety of non-physiological agents such as antimetabolites. Interestingly, induction of tumor cell differentiation is often associated with reversal of the transformation-related enzyme deregulations. An important class of differentiating compounds comprises the antimetabolites of purine and pyrimidine nucleotide metabolism and nucleic acid synthesis, the majority being structural analogs of natural nucleosides. The CTP synthetase inhibitors cyclopentenylcytosine and 3-deazauridine, the thymidylate synthase inhibitor 5-fluoro-2'-deoxyuridine, the dihydrofolate reductase inhibitor methotrexate, the IMP dehydrogenase inhibitors tiazofurin, ribavirin, 5-ethynyl-1-beta-D-ribofuranosylimidazole-4-carboxamide (EICAR) and mycophenolic acid, the ribonucleotide reductase inhibitors hydroxyurea and deferoxamine, and the DNA polymerase inhibitors ara-C, 9-(2-phosphonylmethoxyethyl)adenine (PMEA), and aphidicolin, as well as several nucleoside analogs perturbing the DNA methylation pattern, have been found to induce tumor cell differentiation through impairment of DNA synthesis and/or function. Thus, by selectively targeting those anabolic enzymes that contribute to the neoplastic behavior of cancer cells, the normal cellular differentiation program may be reactivated and the malignant phenotype suppressed.
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Affiliation(s)
- S Hatse
- Rega Institute for Medical Research, Katholieke Universiteit Leuven, Belgium
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van Dorp AG, Verhoeven MC, Nat-Van Der Meij TH, Koerten HK, Ponec M. A modified culture system for epidermal cells for grafting purposes: an in vitro and in vivo study. Wound Repair Regen 1999; 7:214-25. [PMID: 10781213 DOI: 10.1046/j.1524-475x.1999.00214.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
A fully differentiated epithelium mimicking the features of native epidermis was obtained in vitro by culturing human or porcine epidermal keratinocytes on polyester filter substrate at the air-liquid interface. In addition, after 2 weeks of culture, hemidesmosome-like structures were formed along the basal area of the plasma membrane of the basal cells at the cell-filter interface. When grafted onto full-thickness skin wounds in pigs, the take of cell sheets detached from the filter with dispase was significantly higher (about 70%) in comparison to mechanically detached keratinocytes (about 15%). With dispase-treated keratinocytes alone, basement membrane formation took place within 7 days postgrafting as judged from the presence of a lamina lucida and positive staining for type IV collagen. Also, numerous hemidesmosomes and anchoring fibrils were observed at the basal cell-"neodermis" interface. The fully differentiated epidermis, generated by culturing keratinocytes at the air-liquid interface and detached from the substrate by dispase-treatment, is less fragile and easier to handle than epidermal autografts obtained by conventional culturing methods. Detachment by a short dispase-treatment appeared in our hands the only method for successful and complete epithelial regeneration in full-thickness wounds.
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Affiliation(s)
- A G van Dorp
- Department of Dermatology, Leiden University Medical Center, Leiden, The Netherlands
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Pomahac B, Svensjö T, Yao F, Brown H, Eriksson E. Tissue engineering of skin. CRITICAL REVIEWS IN ORAL BIOLOGY AND MEDICINE : AN OFFICIAL PUBLICATION OF THE AMERICAN ASSOCIATION OF ORAL BIOLOGISTS 1998; 9:333-44. [PMID: 9715370 DOI: 10.1177/10454411980090030601] [Citation(s) in RCA: 81] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The skin plays a crucial role in protecting the integrity of the body's internal milieu. The loss of this largest organ is incompatible with sustained life. In reconstructive surgery or burn management, substitution of the skin is often necessary. In addition to traditional approaches such as split- or full-thickness skin grafts, tissue flaps and free-tissue transfers, skin bioengineering in vitro or in vivo has been developing over the past decades. It applies the principles and methods of both engineering and life sciences toward the development of substitutes to restore and maintain skin structure and function. Currently, these methods are valuable alternatives or complements to other techniques in reconstructive surgery. This review article deals with the evolution and current approaches to the development of in vitro and in vivo epidermis and dermis.
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Affiliation(s)
- B Pomahac
- Division of Plastic Surgery, Brigham/Children's/Harvard, Boston, Massachusetts 02115, USA
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8
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Noel-Hudson M, Braut-Boucher F, Robert M, Aubery M, Wepierre J. Comparison of six different methods to assess UVA cytotoxicity on reconstructed epidermis. Relevance of a fluorimetric assay (the calcein-AM) to evaluate the photoprotective effects of α-tocopherol. Toxicol In Vitro 1997; 11:645-51. [DOI: 10.1016/s0887-2333(97)00054-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Braut-Boucher F, Pichon J, Wantyghem J, Muriel MP, Giner M, Font J, Aubery M. Human keratinocyte models: Assessment of cell adhesion and dermotoxicity using fluorescent probes. Toxicol In Vitro 1997; 11:601-11. [DOI: 10.1016/s0887-2333(97)00067-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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10
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Perdikis DA, Basson MD. Basal nutrition promotes human intestinal epithelial (Caco-2) proliferation, brush border enzyme activity, and motility. Crit Care Med 1997; 25:159-65. [PMID: 8989193 DOI: 10.1097/00003246-199701000-00029] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
OBJECTIVES Provision of nutrients to the apical membrane of intestinal epithelial cells by the enteral route is critical for normal gut mucosal function and for the sheet migration required for mucosal healing. The present work attempts to determine whether supplemental nutrient delivery to the basal epithelial surface is important for intestinal epithelial biology. Since attempts to regulate intestinal epithelial cell biology by manipulation of parenteral nutrition solutions have met with some success, we hypothesized that basally delivered nutrients might also be important for intestinal epithelial biology. DESIGN To test this hypothesis, we compared the brush border enzyme activity, proliferation, and motility of human intestinal epithelial (Caco-2) cells cultured on a type I collagen substrate either on cell culture dishes with culture medium above the apical side of the cell monolayer or in culture inserts on 0.45-mu semipermeable membranes with culture medium beneath the monolayers as well as above them. Proliferation was assessed by serial hematocytometric counts over 13-day period. Doubling times were calculated by logarithmic transformation of cell counts 48 hrs apart. The specific activity of the brush border enzymes, dipeptidyl dipeptidase and alkaline phosphatase, was assayed by the digestion of synthetic chromogenic substrates in protein-matched aliquots of cell lysates. Sheet migration was quantitated by the expansion of Caco-2 monolayers across collagen. Motility was dissociated from the proliferative component of monolayer expansion by blocking proliferation with mitomycin C. SETTING Laboratory for gastrointestinal mucosal biology. SUBJECTS A well-differentiated subclone of cells derived from the established human Caco-2 colonic epithelial cell line. MEASUREMENTS AND MAIN RESULTS Basal nutrient delivery promoted Caco-2 proliferation, brush border enzyme activity, monolayer expansion, and cell motility. Proliferation was actually increased by 694 +/- 9.89% (n = 90, p < .0001) in cells nourished apically and basally compared with a 314 +/- 3.31% increase (n = 90, p < .0001) in those cells receiving only apical nutrition. The addition of basal nutrient delivery to the cell culture system augmented both alkaline phosphatase and dipeptidyl dipeptidase specific activity by 116 +/- 5.4% and 256 +/- 14.0%, respectively (p < .0001, n = 6 for each group). The effects of basal nutrient delivery were maintained after mitomycin blockade of proliferation for both alkaline phosphatase (392 +/- 89.8% of control, n = 3, p < .0005) and dipeptidyl dipeptidase (374 +/- 79.1% of control, n = 3, p < .005), suggesting that the increased digestive enzyme-specific activity reflected differentiation rather than indirect effects of slowing of proliferation. Epithelial sheet migration increased by 389 +/- 8.8% and proliferation-blocked cell motility also increased by 76.5 +/- 1.56% (p < .0005, n = 12 for each) compared with apical nutrient delivery only. CONCLUSIONS These results suggest that although apical nutrition may be critical for intestinal epithelial cell biology, nutrient delivery to the basal surface of intestinal epithelial cell membranes may also promote intestinal epithelial differentiation, proliferation, and mucosal healing.
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Affiliation(s)
- D A Perdikis
- Department of Surgery, Yale University School of Medicine, New Haven, CT USA
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Bonté F, Barré P, Pinguet P, Dusser I, Dumas M, Meybeck A. Simarouba amara extract increases human skin keratinocyte differentiation. JOURNAL OF ETHNOPHARMACOLOGY 1996; 53:65-74. [PMID: 8844461 DOI: 10.1016/s0378-8741(96)01423-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
An aqueous extract of Simarouba amara was studied for its activity on the differentiation of human skin keratinocytes. Submerged and air-exposed treated keratinocyte cultures displayed a more highly differentiated histoarchitecture, with presence of ultrastructural differentiated elements, than untreated controls. Immunohistochemistry of involucrin and activation of transglutaminase activity provided further evidence for the increase in corneocyte envelope formation observed ultrastructurally. Lipid analysis of air-exposed cultures revealed an increase in the cholesterol sulphate, cholesterol and ceramide contents. After 4 weeks of treatment on the hemiface of volunteers, the capacitance and transepidermal water loss evaluation revealed the potential interest of this extract for improvement of skin hydration. Electron microscopic examination of the corneocyte envelope on tape strips confirmed its actions. Taken together these data demonstrated that an aqueous extract of S. amara increases human keratinocyte differentiation.
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Affiliation(s)
- F Bonté
- LVMH Recherche, Nanterre, France
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12
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Potier M, Lakhdar B, Merlet D, Cambar J. Interest and limits of human tissue and cell use in pharmacotoxicology. Cell Biol Toxicol 1995; 11:133-9. [PMID: 8564641 DOI: 10.1007/bf00756514] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- M Potier
- Laboratoire de Biologie Cellulaire, Faculté de Pharmacie, Bordeaux, France
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