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Luxin Liang,Deye Song,Kai Wu,Zhengxiao Ouyang,Qianli Huang,Guanghua Lei,Kun Zhou,Jian Xiao,Hong Wu 한국생체재료학회 2022 생체재료학회지 Vol.26 No.2
Background: Even though the modulatory effects of Magnisum (Mg) and its alloys on bone-healing cells have been widely investigated during the last two decades, relatively limited attention has been paid on their inflammationmodulatory properties. Understanding the activation process of macrophages in response to the dynamic degradation process of Mg as well as the relationship between macrophage phenotypes and their osteogenic potential is critical for the design and development of advanced Mg-based or Mg-incorporated biomaterials. Methods: In this work, a Ti-0.625 Mg (wt.%) alloy fabricated by mechanical alloying (MA) and subsequent spark plasma sintering (SPS) was employed as a material model to explore the inflammatory response and osteogenic performance in vitro and in vivo by taking pure Ti as the control. The data analysis was performed following Student’s t-test. Results: The results revealed that the macrophages grown on the Ti-0.625 Mg alloy underwent sequential activation of M1 and M2 phenotypes during a culture period of 5 days. The initially increased environmental pH (~ 8.03) was responsible for the activation of M1 macrophages, while accumulated Mg2+ within cells contributed to the lateral M2 phenotype activation. Both M1 and M2 macrophages promoted osteoblast-like SaOS-2 cell maturation. In vivo experiment further showed the better anti-inflammatory response, regenerative potentiality and thinner fibrous tissue layer for the Ti-0.625 Mg alloy than pure Ti. Conclusion: The results highlighted the roles of Mg degradation in the Ti-0.625 Mg alloy on the sequential activation of macrophage phenotypes and the importance of modulating M1-to-M2 transition in macrophage phenotypes for the design and development of inflammation-modulatory biomaterials.
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Overview of Cochrane reviews on Chinese herbal medicine for stroke
Maoling Wei,Deren Wang,Deying Kang,Myeong Soo Lee,Tae-Young Choi,Lin Ang,Eunhye Song 한국한의학연구원 2020 Integrative Medicine Research Vol.9 No.1
Background: Stroke is a major health issue worldwide. Since Chinese herbal medicine is widely used for the treatment of stroke, there is a need to evaluate its efficacy as an alternative treatment option. The aim of this paper is to carry out an overview of Chinese herbal medicine for the treatment of stroke by summarizing and evaluating all existing Cochrane reviews. Methods: The Cochrane Database of Systematic Reviews was searched from its inception date to August 2019 using “stroke” and “herbal medicine” or “traditional medicine” as search terms. For the methodological quality assessment of the Cochrane reviews, the Assessment of Multiple Systematic Reviews (AMSTAR) tool was used. Results: Eight Cochrane reviews that evaluated the efficacy of herbal medicine for the treatment of stroke were included in this overview. There were 71 randomized controlled trials, with 5770 patients in total. The AMSTAR scores of the Cochrane reviews included in this study ranged from 9 to 11 with a mean score of 10. Three reviews met all the 11-item criteria of the AMSTAR. All reviews presented potential efficacy of herbal medicine for stroke treatment in terms of improvement of neurological deficit. Conclusions: This overview reveals the potential efficacy of herbal medicines for the treatment of stroke in terms of neurological deficit improvement. However, due to the high risk of bias in the reviews’ studies, an affirmative conclusion for the recommendation of herbal medicine for clinical practice could not be drawn.
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Kim, Jae-Ouk,Rho, Semi,Kim, Su Hee,Kim, Heejoo,Song, Hyo Jin,Kim, Eun Jin,Kim, Ryang Yeo,Kim, Eun Hye,Sinha, Anuradha,Dey, Ayan,Yang, Jae Seung,Song, Man Ki,Nandy, Ranjan Kumar,Czerkinsky, Cecil,Kim, American Society for Microbiology 2015 CLINICAL AND VACCINE IMMUNOLOGY Vol.22 No.4
<P>In developing countries, <I>Shigella</I> is a primary cause of diarrhea in infants and young children. Although antibiotic therapy is an effective treatment for shigellosis, therapeutic options are narrowing due to the emergence of antibiotic resistance. Thus, preventive vaccination could become the most efficacious approach for controlling shigellosis. We have identified several conserved protein antigens that are shared by multiple <I>Shigella</I> serotypes and species. Among these, one antigen induced cross-protection against experimental shigellosis, and we have named it pan-<I>Shigella</I> surface protein 1 (PSSP-1). PSSP-1-induced protection requires a mucosal administration route and coadministration of an adjuvant. When PSSP-1 was administered intranasally, it induced cross-protection against <I>Shigella flexneri</I> serotypes 2a, 5a, and 6, <I>Shigella boydii</I>, <I>Shigella sonnei</I>, and <I>Shigella dysenteriae</I> serotype 1. Intradermally administered PSSP-1 induced strong serum antibody responses but failed to induce protection in the mouse lung pneumonia model. In contrast, intranasal administration elicited efficient local and systemic antibody responses and production of interleukin 17A and gamma interferon. Interestingly, blood samples from patients with recent-onset shigellosis showed variable but significant mucosal antibody responses to other conserved <I>Shigella</I> protein antigens but not to PSSP-1. We suggest that PSSP-1 is a promising antigen for a broadly protective vaccine against <I>Shigella</I>.</P>
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