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Diabetic patients display increased risk of periodontitis and failure in bone augmentation procedures. Mesenchymal stem cells (MSCs) and platelet-rich plasma (PRP) represent a relevant advantage in tissue repair process and regenerative medicine. We isolated MSCs from Bichat's buccal fat pad (BFP) and measured the effects of glucose and PRP on cell number and osteogenic differentiation potential. Cells were cultured in the presence of 5.5-mM glucose (low glucose [LG]) or 25-mM glucose (high glucose [HG]). BFP-MSC number was significantly lower when cells were cultured in HG compared with those in LG. Following osteogenic differentiation procedures, calcium accumulation, alkaline phosphatase activity, and expression of osteogenic markers were significantly lower in HG compared with LG. Exposure of BFP-MSC to PRP significantly increased cell number and osteogenic differentiation potential, reaching comparable levels in LG and in HG. Thus, high-glucose concentrations impair BFP-MSC growth and osteogenic differentiation. However, these detrimental effects are largely counteracted by PRP., (© 2020 John Wiley & Sons, Ltd.)

Objective: Hair loss generates severe psychosocial implications. To date, exploring the prognostic factors of possible clinical benefit of autologous blood concentrate platelet rich plasma (PRP) was failed. The aim of our pilot study was to explore the correlation between the individual inflammation genetic profile and PRP efficacy in the treatment of hair follicle regeneration., Patients and Methods: 41 volunteers (25 men, 16 women) took part in this retrospective study. All the patients were scheduled for 4 sessions of PRP application with intervals of 40-60 days. All the patients were checked up at 6 weekly intervals for 6 months and, then, at the end of the first year. A panel of 5 polymorphisms on 4 genes (IL-1a, IL-1b, IL-6, and IL-10) implicated in the individual genetic inflammation profile were performed., Results: A significant increase rate in hair density was noticed after the third month of treatment in 32/41 (78%) of the subjects. We found an interesting association between the pro-inflammatory cytokine IL-1α polymorphism C>A (rs17561) and responders to PRP treatment. The cases carrying C/C genotype (coding for Ser114) were 21 (66%) in responders and only 2 (22%) in non-responders (p<0.05). In addition, about IL-1a, the frequency of G/G genotype in responder patients was over two times lower in responder (31%) than in non-responder patients (78%)., Conclusions: Our pilot study demonstrated a correlation between the individual genetic inflammatory profile and the efficacy of the PRP treatment in males. On the contrary, in females, it showed a negative correlation. IL-1a could be used as a prognostic value for PRP efficacy. Also, these results provide preliminary evidence that may encourage the design of controlled clinical trials to properly test this modus operandi on a large number of subjects.

Aim: Our research aimed to evaluate the risk of haemorrhage following oral surgical operations, in patients who were undergoing an anticoagulant therapy, and to test the usefulness of the autologous platelet gel in order to control haemostasis., Methods: A total of 208 patients (84 males/124 females) undergoing an anticoagulant therapy and submitted to oral surgery, were divided at random into 4 groups (A, B, C, D) consisting of 52 patients each, using as criterion of differentiation the kind of treatment we adopted in order to get haemostasis. The patients belonging to the first 3 groups (A, B, C), underwent a surgical operation without discontinuing the dicumarol therapy. In order to get haemostasis, we used: platelet-rich plasma (PRP) and suture, in group A; PRP, haemostatic sponges and suture, in group B; haemostatic sponges, suture and compression by means of gauzes soaked in tranexamic acid in group C. Group D, instead, consisted of patients who underwent a surgical operation, before which the dicumarol therapy had been suspended and replaced by heparincalcium., Results: Patients belonging to the groups A and B showed a very good haemostasis like the patients of group D (control group). As the coumarin therapy didn't need to be discontinued some days before the surgical operation, so the days of hospital stay were reduced and there wasn't the risk of thromboembolism. As to group C (19 males), 6 patients (i.e. 11.5%) showed a good haemostasis, both at once and in the long term, so that they could be discharged on day 2 after surgery., Conclusions: The results obtained during our research, highly encourage using PRP regularly when carrying out surgical treatments on patients who are undergoing a coumarin therapy.