Efficacy of electrotherapy in Bell's palsy treatment: A systematic review.

BACKGROUND: Up to now there is not enough evidence that supports the use of electrotherapy in the treatment of Bell's palsy. OBJECTIVE: Through a systematic review, we aimed to verify whether the use of electrotherapy is effective for treating Bell's palsy or peripheral paralysis. METHODS: Publications were searched in PubMed, EBSCO and Web of Science. The present systematic review included studies that analyzed the electrotherapy as a therapeutic method for treating individuals with Bell's palsy, in order to recover the function of facial muscles. RESULTS: Seven studies involving a total of 131 cases and 113 controls were included in this systematic review. In the studies analyzed, patients received electrotherapy combined with other treatments such as hot-wet facial napkins, massages and muscle reeducation. Although the effect of electrotherapy alone was not evaluated, the use of electrotherapy combined with other treatments produced a significant improvement in the individuals evaluated. CONCLUSIONS: Due to the diverse methodologies used and the small number of individuals included in the studies, we could not fully prove the efficacy of electrotherapy for treating Bell's Palsy. Future studies with larger samples and homogenous populations should be performed to obtain conclusive results.

Short-Term Therapeutic Effects of Ozone in the Management of Pain in Knee Osteoarthritis: A Meta-Analysis.

BACKGROUND: Ozone therapy has been used widely to decrease pain related to osteoarthritis, but the effectiveness of this treatment has not been evaluated. OBJECTIVE: To evaluate the effectiveness of ozone therapy in the reduction of pain in patients with knee osteoarthritis, according to the type of intervention and duration of the effect. TYPE: Meta-analysis. LITERATURE SURVEY: We performed an online search using PUBMED, DIALNET, SCIELO, MEDIGRAPHIC, and ISCO3 databases. We searched for articles published up to January 2018. PARTICIPANTS: We selected eight studies including a total of 355 patients and 363 controls. METHODOLOGY: Only randomized-controlled trials that assessed the efficacy of intraarticular or periarticular infiltrations with ozone to treat knee osteoarthritis in humans were included in the analysis. The results are expressed as standardized mean difference and 95% confidence intervals. The meta-analysis was performed in accordance with the statement of Preferred Reporting Items for Systematic Reviews and Meta-Analyses. SYNTHESIS: We observed that ozone treatment had a therapeutic effect when compared with placebo (d = -0.81, 95% CI -1.06 to -0.55, I2 = 34.79, P(Q) = .47) or other noninvasive treatments. No significant effects were found in favor of the ozone treatment when compared with the use of hyaluronic acid or platelet-rich plasma. However, the use of ozone had a significant short-term benefit reducing knee pain (d = -2.26, 95% CI -2.26 to -3.72, I2 = 97, P(Q) < .001). Pain relief benefits lasted between 3 and 6 months. CONCLUSION: Our results indicate that intraarticular infiltrations of ozone can be used as an optional effective treatment for the management of pain related to knee osteoarthritis. There are short-term effect benefits that peak at around 1 month of treatment, with a gradual decline in efficacy after 3 to 6 months of treatment. More studies are needed to improve our understanding of the efficacy of this interventional treatment. LEVEL OF EVIDENCE: I.

Effect of diabetes on the mechanisms of intrathecal antinociception of sildenafil in rats.

The mechanism of intrathecal antinociceptive action of the phosphodiesterase 5 inhibitor sildenafil was assessed in diabetic rats using the formalin test. Intrathecal administration of sildenafil (12.5-50 microg) produced a dose-related antinociception during both phases of the formalin test in non-diabetic and diabetic rats. Intrathecal pretreatment with N-L-nitro-arginine methyl ester (L-NAME, nitric oxide (NO) synthase inhibitor, 1-50 microg), 1H-(1,2,4)-oxadiazolo(4,2-a)quinoxalin-1-one (ODQ, guanylyl cyclase inhibitor, 1-10 microg), KT5823 (protein kinase G (PKG) inhibitor, 5-500 ng), charybdotoxin (large-conductance Ca2+-activated K+ channel blocker, 0.01-1 ng), apamin (small-conductance Ca2+-activated K+ channel blocker, 0.1-3 ng) and glibenclamide (ATP-sensitive K+ channel blocker, 12.5-50 microg), but not N-D-nitro-arginine methyl ester (D-NAME, 50 microg) or saline, significantly diminished sildenafil (50 microg)-induced antinociception in non-diabetic rats. Intrathecal administration of ODQ, KT5823, apamin and glibenclamide, but not L-NAME nor charybdotoxin, reversed intrathecal antinociception induced by sildenafil in diabetic rats. Results suggest that sildenafil produces its intrathecal antinociceptive effect via activation of NO-cyclic GMP-PKG-K+ channels pathway in non-diabetic rats. Data suggest that diabetes leads to a dysfunction in NO and large-conductance Ca2+-activated K+ channels. Sildenafil could have a role in the pharmacotherapy of diabetes-associated pain.