Fusanori Nishimura

Mesenchymal stem cell (MSC)-derived exosome plays a central role in the cell-free therapeutics involving MSCs and the contents can be customized under disease-associated microenvironments. However, optimal MSC-preconditioning to enhance its therapeutic potential is largely unknown. Here, we show that preconditioning of gingival tissue-derived MSCs (GMSCs) with tumor necrosis factor-alpha (TNF-α) is ideal for the treatment of periodontitis. TNF-α stimulation not only increased the amount of exoso

It is generally accepted that obesity is associated with many other multiple-risk factor syndromes such as hypertension, hyperlipidemia, type 2 diabetes mellitus, and periodontal disease. The number of obese people is increasing rapidly in both western and eastern countries. Adipocytes in the adipose tissues of obese people produce large quantities of biologically active molecules such as leptin, an important molecule regulating energy expenditure and body weight. Therefore, adipocyte-derived ac

Periodontal treatment is effective in reducing CRP and TNF-alpha, while adiponectin does not appear to be influenced by periodontal treatment. Elevated levels of CRP and TNF-alpha may be associated with increased risk for future development of atherosclerosis in periodontitis patients.

Selective recruitment of periodontal ligament cells to a previously exposed root surface is believed to enhance periodontal regeneration. It has been hypothesized that competition from gingival fibroblasts may reduce the potential of periodontal regeneration. We compared the migratory responses of PDL cells and gingival fibroblasts to a variety of biologicals. Parallel experiments designed to examine the directed migration responses of both periodontal ligament cells (PDL cells) and gingival fib

Recent attention has been focused on our understanding of the negative influences of oral chronic inflammation on systemic health. Successful periodontal treatment appears to have beneficial effects on the metabolic control of type 2 diabetes. Although type 2 diabetes is a multiple-risk-factor syndrome, lowered insulin sensitivity, called insulin resistance, is essential in developing the disease. Pro-inflammatory cytokine, tumor necrosis factor-alpha (TNF-alpha), produced from adipose tissues i

A ligand for TLR-4 stimulates macrophages to produce TNF-alpha. TNF-alpha, thus produced, cooperatively up-regulates IL-6 production with other soluble factors secreted either from adipocytes or macrophages in these cells. Markedly up-regulated IL-6 would greatly influence the pathophysiology of diabetes and its vascular complications.

Microbiological, immunological, host-defensive, and genetic analyses were performed on a mother and daughter, both of whom had early-onset periodontitis (rapidly progressive periodontitis in the mother; localized juvenile periodontitis in the daughter). Microscopic examination revealed a greatly elevated percentage of rod-form bacteria in both subjects. Fusobacterium sp. and Porphyromonas gingivalis (formerly Bacteroides gingivalis) were the predominant microorganisms cultured. The humoral immun

Periodontal disease has been considered as a complication of diabetes mellitus. A recent epidemiological study revealed that obesity is an independent risk factor for periodontal disease. Obesity and type 2 diabetes mellitus are associated with many metabolic disorders including insulin resistance, dyslipidemia, hypertension and atherosclerosis. Chronic sub-clinical inflammation, although often for the most part in a healthy reference range, has recently been declared part of the insulin resista

Periodontal disease is the result of a complex interplay of bacterial infection and host responses, and is often modified by various systemic diseases such as diabetes mellitus. Such diseases are capable of affecting the periodontium and/or the treatment of periodontal disease. However, recent research has changed our concept of how periodontal disease should be treated. Here we present several concerns directed towards the periodontal therapy of patients with diabetes mellitus based on our stud

The CCL19-CCR7 pathway associates with the development of high-fat-induced obesity and insulin resistance.