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- 저자 : Andreana, Sebastiano (검색결과 4 건)
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Peri-implant disease: what we know and what we need to know
Valente, Nicola Alberto,Andreana, Sebastiano Korean Academy of Periodontology 2016 Journal of Periodontal & Implant Science Vol.46 No.3
Peri-implant disease is a serious problem that plagues today's dentistry, both in terms of therapy and epidemiology. With the expansion of the practice of implantology and an increasing number of implants placed annually, the frequency of peri-implant disease has greatly expanded. Its clinical manifestations, in the absence of a globally established classification, are peri-implant mucositis and peri-implantitis, the counterparts of gingivitis and periodontitis, respectively. However, many doubts remain about its features. Official diagnostic criteria, globally recognized by the dental community, have not yet been introduced. The latest studies using metagenomic methods are casting doubt on the assumption of microbial equivalence between periodontal and peri-implant crevices. Research on most of the features of peri-implant disease remains at an early stage; moreover, there is not a commonly accepted treatment for it. In any case, although the evidence so far collected is limited, we need to be aware of the current state of the science regarding this topic to better understand and ultimately prevent this disease.
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Peri-implant disease: what we know and what we need to know
Nicola Alberto Valente,Sebastiano Andreana 대한치주과학회 2016 Journal of Periodontal & Implant Science Vol.46 No.3
Peri-implant disease is a serious problem that plagues today's dentistry, both in terms of therapy and epidemiology. With the expansion of the practice of implantology and an increasing number of implants placed annually, the frequency of peri-implant disease has greatly expanded. Its clinical manifestations, in the absence of a globally established classification, are peri-implant mucositis and peri-implantitis, the counterparts of gingivitis and periodontitis, respectively. However, many doubts remain about its features. Official diagnostic criteria, globally recognized by the dental community, have not yet been introduced. The latest studies using metagenomic methods are casting doubt on the assumption of microbial equivalence between periodontal and peri-implant crevices. Research on most of the features of periimplant disease remains at an early stage; moreover, there is not a commonly accepted treatment for it. In any case, although the evidence so far collected is limited, we need to be aware of the current state of the science regarding this topic to better understand and ultimately prevent this disease.
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Nikolaos K. Andrikopoulos,Andriana C. Kaliora,Andreana N. Assimopoulou,Vassilios P. Papageorgiou 한국식품영양과학회 2002 Journal of medicinal food Vol.5 No.1
The minor polyphenolic and nonpolyphenolic constituents of olive oil were examined, in var-ious doses, against copper ion induced low-density lipoprotein (LDL) oxidation and werefound, in optimal doses (final concentration, 10 mM or 20 mM), to have remarkable biologi-cal activity, contributing to that previously reported for the major phenolic compounds. Themain phytosterols, b-sitosterol, campesterol, and stigmasterol, were found to have 43.8%,37.3%, and 3.4% LDL mean protection (MP) activity, respectively, while free cholesterol ex-hibited 43.2% MP. The triterpenoid derivative compounds, ursolic acid, uvaol, and oleanolicacid, had similar MP activities of 50.5%, 46.8%, and 46.0%, respectively. Tocopherol (Toc) iso-mers exhibited an increasing effect in the following order: a-Toc (33.6%) , b-Toc (36.1%) ,g-Toc (42.9%) , d-Toc (46.0%). The flavonoid polyphenols, quercetin, luteolin, and rutin, ex-hibited the highest activities 46.8%, 49.5%, and 53.7% MP, respectively, comparable to the49.0% MP activity found for oleuropein. These findings indicate the relative independenceof LDL protection activity in regard to structural differences among the involved compounds.A relation to the Mediterranean diet is also demonstrated.
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Athanasios S. Arampatzis,Konstantinos N. Kontogiannopoulos,Konstantinos Theodoridis,Eleni Aggelidou,Angélique Rat,Anne Willems,Ioannis Tsivintzelis,Vassilios P. Papageorgiou,Aristeidis Kritis,Andreana 한국생체재료학회 2021 생체재료학회지 Vol.25 No.3
Background: Current research on skin tissue engineering has been focusing on novel therapies for the effective management of chronic wounds. A critical aspect is to develop matrices that promote growth and uniform distribution of cells across the wound area, and at the same time offer protection, as well as deliver drugs that help wound healing and tissue regeneration. In this context, we aimed at developing electrospun scaffolds that could serve as carriers for the bioactive natural products alkannin and shikonin (A/S). Methods: A series of polymeric nanofibers composed of cellulose acetate (CA) or poly(ε-caprolactone) (PCL) and varying ratios of a mixture of A/S derivatives, has been successfully fabricated and their physico-chemical and biological properties have been explored.
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