Salivary proteomic profile of response to different resistance training protocols: A case report.

Resistance training (RT) with blood flow restriction (BFR) or high intensity (HI) are effective to increase muscle mass. To understand this effect, techniques known as "omics" are used to identify possible biomarkers. This study analyzed the salivary proteomic profile of healthy individuals trained before and after two RT protocols both designed with eight exercises for upper- and lower-limbs, one performed at low percentage of one-maximum repetition (%1RM) with BFR technique, and other at high %1RM (HI) without BRF technique. Four healthy males between 18 and 28 years participated in the study. Stimulated saliva was collected before (BBFR/BHI) and immediately after (ABFR/AHI) the two RT protocols. All protein-related processing was performed using label-free proteomic. The difference in expression between groups was expressed as p < .05 for downregulated proteins and 1-p > .95 for upregulated proteins. There was difference in salivary flow between ABFR and BBFR (p = .005). For HI, 87 proteins were found after the practice and 119 before. Three hemoglobin isoforms were increased in AHI compared with BHI. In the BFR comparison, 105 proteins were identified after (ABFR) and 70 before (BBFR). Among those increased ABFR, we highlight five hemoglobin isoforms and Deleted in malignant brain tumors 1 protein. Between ABFR and AHI, 17 isoforms of histones, Transaldolase, Transketolase, Glyceraldehyde-3-phosphate dehydrogenase, and Antileukoproteinase were decreased ABFR. For HI, there was an increase in proteins related to oxidative stress and metabolism of the musculoskeletal system, compared with BFR. HI seems to induce higher anabolic signaling to muscle mass increase and antiatherosclerotic effects.

Gingivitis in cattle and supplemental protein diet: Insights from proteomic analysis.

Salivary proteins are essencial in the maintenance of oral homeostasis and can reflect systemic and localized processes, like gingivitis. However, little is known about the relationship between diet and the occurrence of gingivitis in cattle. The present study aimed to characterize the salivary proteomic profile of cattle (n = 12) fed hay (112.19 g/kg of crude protein) cultivated in reformed pastures, and, one group received protein supplement (PS, n = 6); the effect of the protein supplement on the gingival health of the cattle was determined by weekly intraoral examination and periodontal evaluation of the eight (deciduous) incisors. The whole saliva proteome of the two groups was evaluated after 20 and 60 days of confinement. In the periodontal clinical evaluation both groups had episodes of gingivitis; however, the average number of affected sites in the PS group was higher on day 60. The cattle fed exclusively hay, presented a lower average of affected gingival sites on day 60. After 60 days of experimentation, nine biological and 11 immunological processes were altered in bovine saliva. Proteins with multiple functions were detected in the saliva of the cattle; however, differences were observed in their regulation between the two groups. SIGNIFICANCE: In bovine populations, the relationship between diet and increased incidence of gingivitis is theorized. The results of the present pilot study, both diets caused episodes of gingivitis in the primary dentition of cattle and, apparently, diets with protein supplementation stimulate the expression of salivary proteins with a protective role in cattle that can act against infectious-inflammatory processes, such as gingivitis. However, it is plausible that over time, cattle will adapt to these diets and become more vulnerable to gingivitis.