Characterization of beta-cyclodextrin/myrtenol complex and its protective effect against nociceptive behavior and cognitive impairment in a chronic musculoskeletal pain model
CARBOHYDRATE POLYMERS
Authors: Heimfarth, Luana; dos Anjos, Klecia Santos; Barbosa Gomes de Carvalho, Yasmim Maria; dos Santos, Bruno Lucena; Serafini, Mairim Russo; de Carvalho Neto, Antonio Guilherme; Nunes, Paula Santos; Araujo Beserra Filho, Jose Ivo; da Silva, Sara Pereira; Ribeiro, Alessandra Mussi; Bezerra, Daniel Pereira; Marreto, Ricardo Neves; Siqueira Quintans, Jullyana de Souza; de Souza Araujo, Adriano Antunes; Melo Coutinho, Henrique Douglas; Scotti, Marcus T.; Scotti, Luciana; Quintans-Junior, Lucindo Jose
Abstract
Myrtenol has gained wide interest because of its pharmacological profiles, mainly for treatment of chronic diseases. To improve the solubility of myrtenol, the formation of inclusion complexes with beta-cyclodextrin was performed by physical mixture, kneading process or slurry complexation (SC) methods and characterized using thermal analysis, XRD, SEM and NMR. From these results, myrtenol complexed by SC was successfully complexed into beta-cyclodextrin cavity. The interaction between myrtenol and beta-cyclodextrin was confirmed by molecular docking. Hence, the SC beta-cyclodextrin-myrtenol complex was evaluate for its anti-hyperalgesic, an-xiolytic and antioxidant activity in a fibromyalgia model. Results show that myrtenol and beta-cyclodextrin form a stable complex and have anti-hyperalgesic effect, improve the cognitive impairment caused and have an anxiolytic-like effect. Furthermore, the beta-cyclodextrin/myrtenol complex decrease lipoperoxidation, increased catalase activity and a reduce SOD/CAT ratio. Therefore, beta-cyclodextrin/myrtenol complex reduce painful behavior, improves motor skills and emotional behavior and decreases oxidative stress in a fibromyalgia model.
Impact of Varying Dosages of Fish Oil on Recovery and Soreness Following Eccentric Exercise
NUTRIENTS
Authors: VanDusseldorp, Trisha A.; Escobar, Kurt A.; Johnson, Kelly E.; Stratton, Matthew T.; Moriarty, Terence; Kerksick, Chad M.; Mangine, Gerald T.; Holmes, Alyssa J.; Lee, Matthew; Endito, Marvin R.; Mermier, Christine M.
Abstract
Fish oils (FOs) are rich in omega-3 long-chain polyunsaturated fatty acids, which have been purported to enhance recovery of muscular performance and reduce soreness post-exercise. However, the most effective FO dose for optimizing recovery remains unclear. The purpose of this investigation was to examine the effect of FO supplementation dosing on the recovery of measures of muscular performance, perceived soreness, and markers of muscle damage following a rigorous bout of eccentric exercise. Thirty-two college-aged resistance-trained males (similar to 23.6 years, 71.6 kg, 172.1 cm) were supplemented with 2, 4, 6 g/day (G) FO or placebo (PL) for similar to 7.5 weeks. Following 7 weeks of supplementation, pre-exercise (PRE) performance assessments of vertical jump (VJ), knee extensor strength, 40-yard sprint, T-test agility, and perceived soreness were completed prior to a bout of muscle-damaging exercise and were repeated immediately post (IP), 1-, 2-, 4-, 24-, 48-, and 72-h (H) post-exercise. Repeated measures analysis of variance indicated a treatment x time interaction (p< 0.001) for VJ and perceived soreness, but no group differences were observed at any time point. VJ returned to PRE (54.8 +/- 7.9 cm) by 1H (51.8 +/- 6.5 cm,p= 0.112) for 6G, while no other groups returned to baseline until 48H. Lower soreness scores were observed in 6G compared to PL at 2H (mean difference [MD] = 2.74,p= 0.046), at 24H (MD: 3.45,p< 0.001), at 48H (MD = 4.45,p< 0.001), and at 72H (MD = 3.00,p= 0.003). Supplementation with 6G of FO optimized the recovery of jump performance and muscle soreness following a damaging bout of exercise.