Maternal periodontitis potentiates monosodium glutamate-obesity damage on Wistar offspring's fast-glycolytic muscle.

OBJECTIVE: To evaluate the effects of magnifying the damage caused by obesity induced by monosodium glutamate, using a model of maternal periodontitis, on the structure of the anterior tibialis muscle of the offspring. MATERIALS AND METHODS: Twenty-four female Wistar rats were divided into four experimental groups: control (n = 6), obese (n = 6), control with periodontitis (n = 6) and obese with periodontitis (n = 6). At 78 days of life, the rats were mated with males without any experimental intervention. The offspring of these rats (n = 1/L), at 120 days of life, were weighed and measured, then euthanized. Plasma was collected for analysis of cytokines IL-6, IL-10, IL-17 and TNF-α. Adipose tissues were collected and weighed, and the anterior tibial muscle was designated for histomorphological analyses (n = 6/group). RESULTS: Monosodium glutamate offspring showed significant muscle changes, such as a reduction in the size of fibres and neuromuscular junctions, and an increase in the nucleus and capillaries. However, all these changes were more expressed in monosodium glutamate-obese with periodontitis offspring. CONCLUSION: This leads us to suggest a magnifying effect promoted by periodontitis to the damage already well described by monosodium glutamate-obesity, determined by low-intensity inflammation, causing greater muscle damage.

Influence of pain prognosis and electrical stimulation modality on the amplitude of current elicited at sensory threshold in chronic lumbar pain sufferers / Influência do prognóstico para dor e da modalidade de estimulação elétrica na amplitude de corrente elicitada no limiar sensorial em lombálgicos crônicos

ABSTRACT BACKGROUND AND OBJECTIVES: Sensory function may be altered in chronic low back pain (CLBP), which may alter the perception of therapeutic currents. The aim of this study was to verify whether the risk of poor prognosis for CLBP pain influences the amplitude elicited at the sensory threshold (ST) in different modalities of neuromuscular electrical stimulation (NMES). METHODS: This is a quasi-experimental counterbalanced study with 40 subjects divided into four groups (n=10 each), according to the risk of poor prognosis for pain: no risk (control group - CG), low (LrG), medium (MrG), and high (HrG) risks. Four modalities of NMES were tested: two medium frequency currents (Aussie current [AC] and Russian current [RC]) and two low frequency currents (commonly known as functional electrical stimulation [FES]), with two phase durations of200 μs (FES_200) and 500 μs (FES_500), in the region of the lumbar multifidus muscles. All subjects were exposed to all current modalities with interval periods, and when the ST was reached, the amplitude of the current measured in mA was recorded. RESULTS: The currents that elicited the highest and lowest amplitude in the ST were FES_200 and AC, respectively. As for the risk of poor prognosis, the highest amplitudes were for the HrG and the lowest for the LrG. CONCLUSION: The amplitude of the current elicited in the ST tended to be higher among those with a higher risk of poor prognosis for pain and, among the currents, those of medium frequency elicited lower amplitudes.

RESUMO JUSTIFICATIVA E OBJETIVOS: A função sensorial é potencialmente alterada na presença de dor lombar crônica (DLC), o que pode alterar a percepção de passagem de correntes terapêuticas. O objetivo deste estudo foi verificar se o risco de mau prognóstico para DLC influencia a amplitude elicitada no limiar sensorial (LS) em diferentes modalidades de estimulação elétrica neuromuscular (EENM). MÉTODOS: Trata-se de um estudo quase-experimental contrabalanceado composto por 40 voluntários alocados em quatro grupos (n=10 cada), de acordo com o risco de mau prognóstico para dor: sem risco (grupo controle - GC), baixo risco (GBR), médio risco (GMR) e alto risco (GAR). Foram testadas quatro modalidades de EENM: duas correntes de média frequência (corrente Aussie [CA] e corrente Russa [CR]) e duas correntes de baixa frequência (comumente denominada estimulação elétrica funcional [FES]), com duas durações de fases 200 μs (FES_200) e 500 μs (FES_500) na região dos músculos multífidos lombares. Todos os voluntários foram submetidos a todas as modalidades de corrente, com períodos de intervalos, e ao ser atingido o LS, foi realizado o registro da amplitude da corrente medida em mA. RESULTADOS: As correntes que elicitaram a maior e a menor amplitude no LS foram, respectivamente, FES_200 e CA. Quanto ao risco de mau prognóstico, as maiores amplitudes foram do GAR e as menores do GBR. CONCLUSÃO: A amplitude da corrente elicitada no LS tendeu a ser mais alta entre aqueles com maior risco de mau prognóstico para dor e, dentre as correntes, aquelas de média frequência elicitaram amplitudes mais baixas.A amplitude da corrente elicitada no LS tendeu a ser mais alta entre aqueles com maior risco de mau prognóstico para dor e, dentre as correntes, aquelas de média frequência elicitaram amplitudes mais baixas.

Cryotherapy in Postoperative Shoulder Surgery: A Systematic Review.

Cryotherapy, a therapeutic technique involving localized cooling of the body, has gained popularity for postsurgical rehabilitation. It induces a reduction in cellular metabolism, vasoconstriction, and pain relief, making it an attractive option for managing postoperative (PO) shoulder pain. This systematic review aimed to assess the effectiveness of cryotherapy in PO shoulder patients, focusing on pain, range of motion, functionality, and temperature changes. The review included six randomized clinical trials, involving a total of 233 patients who underwent various shoulder surgeries. Cryotherapy was applied using different methods, including Cryo/Cuff, Cryoton®, Polar Care 300, and ice packs. Results indicated that cryotherapy was generally effective in reducing PO shoulder pain. However, one study found no significant difference in pain outcomes between the cryotherapy group and control group. Furthermore, three studies demonstrated a decrease in intra-articular and skin temperatures with cryotherapy application. A risk of bias analysis revealed some concerns in the overall risk of bias for five studies, with one study considered to have a high risk of bias. Although publication bias assessment was not conducted due to the limited number of included studies, it was noted that the studies exhibited heterogeneity in terms of population, intervention methods, and outcome measures. In conclusion, cryotherapy appears to be a promising adjunctive treatment for PO shoulder pain, although the existing evidence has some limitations, including small sample sizes and methodological concerns. More high-quality studies are needed to establish the full extent of cryotherapy's effectiveness in PO shoulder rehabilitation, especially regarding its impact on functionality and range of motion.

Articular mobilization promotes improvement in functional and inflammatory parameters in a gouty arthritis model.

OBJECTIVE: Gouty arthritis is characterized by painful inflammation due to the deposition of monosodium urate crystals in joint tissues. Despite available treatments, many patients experience ineffective management and adverse effects. This study evaluated a manual therapy protocol involving passive joint mobilization at the peak of inflammation in a gouty arthritis model using functional and inflammatory parameters. METHODS: Twenty male Wistar rats, 12 weeks old, were divided into two groups (n=10 each): Gouty Arthritis and Control Groups, which were further subdivided into treated and untreated groups (n=5 each). The Gouty Arthritis Group received intraarticular knee injection of 50µL of monosodium urate crystals, while the Control Group received 50µL of phosphate buffered saline. The treatment involved a 9-minutes session of grade III joint mobilization (according to Maitland). Nociception, grip strength, and edema were evaluated before induction (EV0), 7 hours after assessment (EV1), immediately after treatment (EV2), and 1 hour after treatment (EV3). The animals were euthanized, and synovial fluid was collected to analyze leukocyte migration. RESULTS: The model mimicked the signs of the Gouty Arthritis Group, with a decrease in the threshold of nociception and strength and an increase in edema and leukocyte count. The mobilization protocol significantly increased the nociceptive threshold and grip strength and reduced edema; however, it did not reverse the increase in leukocyte count. CONCLUSION: Our results suggest that mobilization promotes analgesia and may modulate the inflammatory process owing to reduced edema and subtle attenuation of cell migration, which contributes to strength gain.

Peripheral electrical stimulation on neuroplasticity and motor function in stroke patients: a systematic review and meta-analysis.

INTRODUCTION: The use of electrotherapy has been presented as a great resource for the professional physiotherapist in the most diverse pathologies. Stroke is a neurological condition responsible for sequelae such as hemiplegia that directly impair the quality of life of patients. OBJECTIVE: This study aimed to review the literature on the effects of electrotherapeutic resources on motor function and neuroplasticity in individuals with post-stroke sequelae. MATERIALS AND METHODS: 2427 articles were found in databases according to search criteria for each base according to the included descriptors (EndNote Web). After exclusion of duplicate articles, automatically and manually, Phase 1 was performed - reading of titles and abstracts of 1626 articles according to eligibility criteria by two blinded reviewers using the programme Rayyan QCRI (Qatar Computing Research Institute), conflicts were resolved in consensus between the two reviewers. Thus, 13 articles were selected for Phase 2-13 articles were selected for reading in full, leaving 8 articles in this review. To assess the quality of bias of the selected studies, the PEDro Scale was used. RESULTS: In the assessment of neuroplasticity, statistically significant results were found in two studies (p < 0.05). However, the effects of electrostimulation stood out significantly in the motor function of these individuals (p < 0.05). It can be considered with neuroplasticity, since improved functionality can be related to electrostimulation-induced neuroplasticity. Conclusions Electrostimulation is able to promote neuroplasticity and increase motor function, generating positive effects in the treatment of individuals with post-stroke sequelae.

Photobiomodulation therapy on skeletal muscles exposed to diabetes mellitus: a systematic review of animal studies.

Diabetes-related muscle damage has been overlooked despite its known association with increased morbidity and mortality in DM individuals. PBMT is a recognized alternative to improve skeletal muscle health in other populations, but its effectiveness in DM is still unclear. To address this issue, we reviewed preclinical studies, available in any language and period, in ten sources of information. The methods were previously registered at PROSPERO (CRD42021271041), based on PRISMA recommendations. Studies in murine models of T1DM or T2DM that reported quantitative analyses of skeletal muscles treated with low-level light therapy could be included after a blind selection process. Most of the seven included studies focus on decompensated T1DM rats with acute muscle injury (cryoinjury or contusion). In these five studies, PBMT improved muscle regeneration, by reducing inflammation and stimulating factors pro-angiogenesis and pro-myogenesis. Some positive effects could also be observed in two studies on muscles without acute injury: control of oxidative stress (T1DM) and reduction of myosteatosis (T2DM). Although infrared laser applied locally appears to be a promising approach, optimal parameters are undefined due to the heterogeneity of outcomes and high risk of bias, which prevented a quantitative synthesis. Several aspects of this growing field have yet to be investigated, particularly regarding the DM model (e.g., aged animals, T2DM), intervention (e.g., comparison with LED), and outcomes (e.g., muscle mass, strength, and function). Future research should aim to improve the internal validity by following guidelines for animal studies and enhance the translatability to clinical trials by using animal models that closely mimic patients with DM in rehabilitation settings.

Therapeutic effects of laser on psoriasis plaques: a systematic review.

Given the relevance of laser application, the objective of this study was to carry out a systematic review to verify the therapeutic effects of laser application on psoriasis plaques. The databases used were PubMED, Scopus, Embase, Cochrane, Web of Science, and in the gray literature: Google Scholar, Open Grey and LIVIVO. A total of 1,227 records were found, after removal of duplicates 851 studies remained for Phase 1 (reading titles and abstracts) and 31 for Phase 2 (reading the full studies) and finally 9 studies remained for this review, 7 randomized and 2 non-randomized. The risk of bias analysis had two studies with moderate risk and seven with high risk. The present study presented evidence that laser application has positive effects such as reduction of psoriasis plaques. However, due to the high risk of bias, there is a need for further studies.

An Early and Sustained Inflammatory State Induces Muscle Changes and Establishes Obesogenic Characteristics in Wistar Rats Exposed to the MSG-Induced Obesity Model.

The model of obesity induced by monosodium glutamate cytotoxicity on the hypothalamic nuclei is widely used in the literature. However, MSG promotes persistent muscle changes and there is a significant lack of studies that seek to elucidate the mechanisms by which damage refractory to reversal is established. This study aimed to investigate the early and chronic effects of MSG induction of obesity upon systemic and muscular parameters of Wistar rats. The animals were exposed to MSG subcutaneously (4 mg·g-1 b.w.) or saline (1.25 mg·g-1 b.w.) daily from PND01 to PND05 (n = 24). Afterwards, in PND15, 12 animals were euthanized to determine the plasma and inflammatory profile and to assess muscle damage. In PND142, the remaining animals were euthanized, and samples for histological and biochemical analyses were obtained. Our results suggest that early exposure to MSG reduced growth, increased adiposity, and inducted hyperinsulinemia and a pro-inflammatory scenario. In adulthood, the following were observed: peripheral insulin resistance, increased fibrosis, oxidative distress, and a reduction in muscle mass, oxidative capacity, and neuromuscular junctions, increased fibrosis, and oxidative distress. Thus, we can conclude that the condition found in adult life and the difficulty restoring in the muscle profile is related to the metabolic damage established early on.

Acute effects of photobiomodulation applied on the dorsal root ganglion in gout model-induced rats.

Gouty arthritis is an inflammatory disease that triggers symptoms such as pain, swelling, and joint stiffness. Since its main therapy is medication, research on other forms of treatment that do not generate side effects is necessary. Given this, the objective of this research was to evaluate the effects of combined photobiomodulation (LASER and LED) applied on the dorsal root ganglion (DRG) in an experimental model of gouty arthritis. For this, 40 Wistar rats were randomized into 4 groups: simulation of the model with saline injection, without treatment (CTL; n = 10); gout simulation with photobiomodulation treatment (CTL-PBM; n = 10); gout model with the injection of monosodium urate crystals (1.25 mg) in the femorotibial joint, without treatment (GOT; n = 10); or gout model with photobiomodulation treatment (GOT-PBM; n = 10). After 7 h of gout induction, photobiomodulation was performed with a cluster of 4 diodes applied to the GRD region in animals from the CTL-PBM and GOT-PBM groups. After analysing the results, it was concluded that the therapy favored the reduction of edema and joint incapacity, as well as the increase in the nociceptive threshold and plantar grip strength. Furthermore, PBM stimulated an increase in the inflammatory response (with increased levels of IL-1ß and greater recruitment of leukocytes) and greater activation of the antioxidant system. Therefore, PBM can be considered an effective therapeutic alternative to improve the functional status in this model of joint disease.

Experimental model of periodontitis and rheumatoid arthritis potentiates the deleterious effects on functional capacity, leukocyte migration, synovial and periodontal tissues in Wistar rats.

OBJECTIVE: This study aimed to evaluate whether ligature-induced periodontitis and rheumatoid arthritis (RA) potentiate the deleterious effects on functional capacity, periodontal and synovial tissues, leukocyte migration, and interleukin 17 (IL-17) levels, and to investigate the repercussions of single Freund's Complete Adjuvant (FCA) injection associated with periodontitis. MATERIALS AND METHODS: Fifty-one male Wistar rats were randomised into six groups: control (CG, n = 8), RA (RAG, n = 9), periodontitis (PG, n = 9), periodontitis and RA (PRAG, n = 9), periodontitis and intradermal injection (PIDG, n = 9), and periodontitis and intra-articular injection (PIAG, n = 7). The animals underwent ligature placement and one or two injections with FCA to induce RA. Motor disability, nociceptive threshold, joint edema, and muscle strength were assessed, and the animals were euthanized on day 30. Synovial fluid, hemimandibles, and knee joints were collected. RESULTS: PRAG showed no reduction of edema or improvement of muscle strength, whereas it showed most significant changes in leukocyte migration, morphological analyses of the synovial membrane (SM), and radiographic and histometric analyses of the jaw. The PIAG showed some alterations, though not permanent. CONCLUSION: Ligature-induced periodontitis and RA induced by two FCA injections accentuated the deleterious effects on functional capacity, leukocyte migration, synovial and periodontal tissues.

Resistance exercise and low-level laser therapy improves grip strength and morphological aspects in the ankle joint of Wistar rats with experimental arthritis.

Rheumatoid arthritis (RA) is an inflammatory disease mainly affecting synovial joints. Photobiomodulation through low-level laser therapy (LLLT) and resistance exercise may improve the inflammatory process. Therefore, we analyzed the effects of resistance exercise, LLLT, and the combination of both treatments on hind paw grip strength and ankle joint histomorphometric aspects of Wistar rats subjected to experimental RA. A total of 64 male Wistar rats were divided into eight groups: control, control LLLT, control exercise, control LLLT and exercise, arthritis, arthritis LLLT, arthritis exercise, and arthritis LLLT and exercise groups. The experimental RA was induced by a complete Freund's adjuvant injection into the knee joint cavity. Climbing exercises and LLLT (660 nm; 5 J/cm2 per point) were performed as the treatment. In addition, muscle strength was evaluated using the grip strength test, and morphometric evaluations were performed on the ankle joint. Generalized mixed models and multivariate analysis of variance tests were used for statistical analysis. Statistical significance was set at a p-value of .05. Arthritis LLLT, exercise, and LLLT and exercise had positive effects on grip strength between the groups (F[7.56] = 5.8, p < .004) and within the groups (F[4.3] = 9.9, p < .002) throughout the evaluations. Morphometry revealed degenerative lesions in the ankle joint as subintima with angiogenesis, inflammatory cells, flocculated articular cartilage, chondrocyte disorganization, and pannus in the arthritis group (p < .001). The treated groups exhibited morphological characteristics similar to those of the control group. LLLT and resistance exercise restored muscle strength and morphological aspects of the ankle joint in rats with experimentally induced RA.

Cryotherapy in Knee Arthroplasty: Systematic Review and Meta-Analysis.

Total knee arthroplasty is performed to relieve knee pain and disability related to end-stage osteoarthritis. Cryotherapy is used as an analgesic method, reducing the intraarticular temperature. The objective of this study was to review the literature on the efficacy of cryotherapy in knee arthroplasty. A total of 700 articles were found in databases according to the search criteria for each database and the included descriptors (EndNote Web). After exclusion of duplicate articles, automatically and manually, Phase 1 was performed-reading of titles and abstracts of 375 articles according to the eligibility criteria by two blinded reviewers using the Rayyan QCRI (Qatar Computing Research Institute) program, conflicts were resolved in consensus between the 2 reviewers. Thus, 21 articles were selected for Phase 2-reading in full, leaving 5 articles for this review. The Cochrane instrument Rob 2 was used to assess the quality of bias of the selected studies, and RevMan 5.4.1 was used for meta-analysis. The age of study participants ranged from 51 to 74 years. The sample size ranged from 37 to 389 subjects, with a total of 648 subjects. The risk of bias was almost entirely high and moderate for all endpoints: pain, range of motion (ROM), and function. There was a decrease in pain level and as secondary endpoints ROM and functionality, there were divergences between studies. It can be concluded that although cryotherapy is indicated to reduce pain in the postoperative period of knee arthroplasty, studies have many methodological biases and the meta-analysis performed could not confirm the effects; therefore, more primary studies are needed to better understand the effects.

Articular mobilization promotes improvement in functional and inflammatory parameters in a gouty arthritis model

ABSTRACT Objective Gouty arthritis is characterized by painful inflammation due to the deposition of monosodium urate crystals in joint tissues. Despite available treatments, many patients experience ineffective management and adverse effects. This study evaluated a manual therapy protocol involving passive joint mobilization at the peak of inflammation in a gouty arthritis model using functional and inflammatory parameters. Methods Twenty male Wistar rats, 12 weeks old, were divided into two groups (n=10 each): Gouty Arthritis and Control Groups, which were further subdivided into treated and untreated groups (n=5 each). The Gouty Arthritis Group received intraarticular knee injection of 50µL of monosodium urate crystals, while the Control Group received 50µL of phosphate buffered saline. The treatment involved a 9-minutes session of grade III joint mobilization (according to Maitland). Nociception, grip strength, and edema were evaluated before induction (EV0), 7 hours after assessment (EV1), immediately after treatment (EV2), and 1 hour after treatment (EV3). The animals were euthanized, and synovial fluid was collected to analyze leukocyte migration. Results The model mimicked the signs of the Gouty Arthritis Group, with a decrease in the threshold of nociception and strength and an increase in edema and leukocyte count. The mobilization protocol significantly increased the nociceptive threshold and grip strength and reduced edema; however, it did not reverse the increase in leukocyte count. Conclusion Our results suggest that mobilization promotes analgesia and may modulate the inflammatory process owing to reduced edema and subtle attenuation of cell migration, which contributes to strength gain.

Avaliação da incapacidade de indivíduos com diabetes mellitus: um estudo transversal com o WHODAS 2.0 / Evaluación de la incapacidad de individuos con diabetes mellitus: un estudio transversal con WHODAS 2.0 / Disability assessment of individuals with diabetes mellitus: a cross-sectional study with the WHODAS 2.0

RESUMO A diabetes mellitus (DM) causa diversas limitações funcionais, que podem impactar negativamente na vida pessoal e profissional do indivíduo, acarretando mais complicações e incapacidades. O objetivo do estudo foi identificar em quais domínios do World Health Organization Disability Assessment Schedule versão 2.0 (WHODAS 2.0) os indivíduos com DM apresentam as maiores incapacidades. Para tanto, foi realizado um estudo transversal com 111 pessoas com diagnóstico da doença, independentemente do tipo. Foram aplicados um questionário sociodemográfico e o WHODAS 2.0 com 36 questões, para avaliar as dificuldades apresentadas nos últimos 30 dias. A amostra foi composta predominantemente pelo sexo feminino (60,3%) e classificada como independente na comunidade (90,1%). A maior prevalência foi de indivíduos aposentados (35,1%). O domínio mobilidade apresentou o maior comprometimento (48±23), enquanto o domínio atividades de vida apresentou o menor comprometimento (28±13). Porém, para todos os domínios, o comprometimento ficou abaixo de 50, em uma escala que varia de 0 a 100. Todos os indivíduos com DM apresentaram alguma deficiência, havendo maior comprometimento do domínio relacionado à mobilidade.

RESUMEN La diabetes mellitus (DM) causa varias limitaciones funcionales que pueden impactar negativamente la vida personal y profesional del individuo, ocasionándole más complicaciones e incapacidades. El objetivo de este estudio fue identificar en qué dominios del World Health Organization Disability Assessment Schedule, versión 2.0 (WHODAS 2.0), las personas con DM presentan las mayores incapacidades. Para ello, se realizó un estudio transversal con 111 personas diagnosticadas con la enfermedad, independientemente del tipo. Se aplicaron un cuestionario sociodemográfico y WHODAS 2.0 con 36 preguntas para evaluar las dificultades presentadas en los últimos 30 días. La muestra fue predominantemente femenina (60,3%) y clasificada como independiente en la comunidad (90,1%). La mayor prevalencia fue de individuos jubilados (35,1%). El dominio movilidad tuvo mayor comprometimiento (48±23), mientras que el dominio actividades de la vida presentó el menor comprometimiento (28±13). Sin embargo, para todos los dominios, el comprometimiento fue inferior a 50 en una escala que varía de 0 a 100. Todos los individuos con DM presentaron una discapacidad, con mayor implicación del dominio relacionado con la movilidad.

ABSTRACT Diabetes mellitus (DM) causes several functional limitations, which can negatively affect the personal and professional life of individuals. This effect can lead to more complications and disabilities. This study aimed to analyze in which domains of the World Health Organization Disability Assessment Schedule version 2.0 (WHODAS 2.0) individuals with diabetes mellitus have the greatest disabilities. cross-sectional study was performed with 111 individuals with diabetes mellitus, of any type. A sociodemographic questionnaire and the WHODAS 2.0 with 36 questions were applied to assess individuals' difficulties in the last 30 days. Most individuals were women (60.3%) and classified as independent in the community (90.1%). The highest prevalence was among retired individuals (35.1%). The mobility domain presented the highest impairment (48±23) whereas the life activities domain presented the lowest impairment (28±13). However, for all domains, the impairment was below 50 on a scale ranging from zero to 100. All individuals with diabetes mellitus showed some disability, but the greatest impairment was in the mobility domain.

Effects of Platelet Rich Plasma on Pain in Adult and Elderly Patients with Knee Osteoarthritis: a Systematic Review / Efeitos do Plasma Rico em Plaquetas na Dor em Pacientes Adultos e Idosos com Osteoartrite de Joelho: uma Revisão Sistemática

Platelet-rich plasma (PRP) has been shown to be a promising treatment for osteoarthritis (OA) of the knee in adult and elderly patients, acting in the repair of joint tissues damaged by OA - a degenerative disease that mainly affects articular cartilage. This process of degradation of joint components leads to an increase in the level of pain in these patients. Therefore, this study aimed to evaluate the effectiveness of intra-articular injection of PRP in knee OA in relation to pain. For this systematic review, five databases were used: PubMed, Lilacs, PEDro, Cochrane Library and Google Scholar. Search strategies included the keywords Osteoarthritis, Knee, Platelet-rich plasma, and Pain. In order to be included in this review, the studies had to be of the randomized clinical trial type; use as a sample people between 18 and 80 years old diagnosed with knee OA; use intra-articular PRP treatment compared to placebo; and assess pain intensity. After completion of the selection phase, 5 studies were included in this review. These showed positive results in reducing pain in patients with lower-degeneration OA, and less effective in advanced OA. Furthermore, few side effects were reported after the application of PRP. Therefore, the intra-articular application of PRP can be an important tool for the treatment of knee OA, as it is an effective therapy in decreasing pain levels in patients affected by this pathology. (AU)

O plasma rico em plaquetas (PRP) tem se mostrado um tratamento promissor na osteoartrite (OA) de joelho de pacientes adultos e idosos, atuando no reparo dos tecidos articulares lesados pela OA - doença degenerativa que afeta principalmente a cartilagem articular. Esse processo de degradação dos componentes articulares leva ao aumento do nível de dor nesses pacientes. Sendo assim, este estudo objetivou avaliar a eficácia da injeção intra-articular de PRP na AO de joelho em relação a dor. Para esta revisão sistemática, cinco bases de dados foram utilizadas: PubMed, LILACS, PEDro, Cochrane Library e Google Scholar. As estratégias de busca incluíram as palavras-chave Osteoarthritis, Knee, Platelet-rich plasma e Pain. Para serem incluídos nesta revisão, os estudos deveriam ser do tipo ensaio clínico randomizado; utilizar como amostra pessoas entre 18 e 80 anos diagnosticadas com AO de joelho; utilizar o tratamento com PRP intra articular comparado ao placebo; e avaliar a intensidade da dor. Após o término da fase de seleção, 5 estudos foram incluídos nesta revisão. Estes apresentaram resultados positivos na redução da dor em pacientes com OA de menor grau de degeneração, e menor efetividade na OA avançada. Ademais, poucos efeitos colaterais foram relatados após a aplicação do PRP. Portanto, a aplicação intra-articular do PRP pode ser um importante instrumento para o tratamento da OA de joelhos, visto que é uma terapia eficaz na diminuição dos níveis dor dos pacientes acometidos por tal patologia. (AU)

Effect of neuromuscular electrical stimulation on muscle function in chronic low back pain patients: systematic review / Efeito da estimulação elétrica neuromuscular na função muscular em pacientes com dor lombar crônica: revisão sistemática

ABSTRACT BACKGROUND AND OBJECTIVES: Neuromuscular electrical stimulation (NMES) is one of the resources that can be used in the treatment of patients with chronic low back pain. It is possible that issues related to the stimulation parameters may affect the results obtained with the use of these currents. Therefore, the aim of this review was to investigate the effects of NMES on aspects of lumbopelvic muscle function in individuals with chronic low back pain. CONTENTS: The study is a systematic review that used 10 databases for the search through a comprehensive combination of descriptors that met the research question. The selection criteria based on the PICOT strategy were population - individuals with chronic low back pain (specific and/or non-specific); intervention - NMES; outcomes - paravertebral and/or abdominal muscle changes (muscle power and endurance). The articles were selected by two independent reviewers, who developed the tools for data extraction. Four articles were included in this review. In three of them, there was a significant increase in muscle strength and endurance, as well as muscle cross-sectional area in the group that received NMES compared to the control group. CONCLUSION: NMES showed positive effects in optimizing aspects of muscle function in individuals with chronic low back pain. However, the methods employed are very heterogeneous, which made it impossible to perform a quantitative analysis.

RESUMO JUSTIFICATIVA E OBJETIVOS: A estimulação elétrica neuromuscular (EENM) é um dos recursos que podem ser utilizados no tratamento de pacientes com dor lombar crônica. É possível que questões relacionadas aos parâmetros de estimulação possam afetar os resultados obtidos com o uso dessas correntes. Portanto, o objetivo deste estudo foi investigar os efeitos da EENM em aspectos da função muscular da região lombopélvica em indivíduos com dor lombar crônica. CONTEÚDO: Trata-se de uma revisão sistemática que utilizou 10 bases de dados para a busca por meio da combinação abrangente de descritores que atendessem a pergunta da investigação. Os critérios de seleção com base na estratégia PICOT foram: população - indivíduos com dor lombar crônica (específica e/ ou não específica); intervenção - EENM; desfechos - alterações musculares de paravertebrais e/ou abdominais (potência e resistência muscular). A seleção dos artigos foi feita por dois revisores independentes que elaboraram as ferramentas para extração dos dados. Ao todo, quatro artigos foram incluídos nesta revisão. Em três deles, houve aumento significativo de força e resistência muscular, assim como da área de secção transversa muscular no grupo que recebeu EENM, em relação ao controle. CONCLUSÃO: A EENM apresentou efeitos positivos na otimização dos aspectos da função muscular em indivíduos com dor lombar crônica. Porém, os métodos empregados são muito heterogêneos, o que impossibilitou a realização da análise quantitativa.

Whole-Body Vibration Promotes Skeletal Muscle Restructuring and Reduced Obesogenic Effect of MSG in Wistar Rats.

The negative changes of obesity to the locomotor system are a major concern in the current scenario, where obesity and metabolic syndrome are recurrent in Western societies. A physical exercise is an important tool as a way to rehabilitate obesity, highlighting whole-body vibration, as it is an easy-access modality with few restrictions. In this sense, we sought to evaluate the effect of whole-body vibration on the extensor digitorum longus muscle on a monosodium glutamate-induced obesity model. The main findings of the present study are related to the ability of the treatment with vibration to reduce the obesogenic characteristics and slow down the dyslipidemic condition of the animals. Likewise, the vibration promoted by the vibrating platform was essential in the recovery of the muscle structure, as well as the recovery of the muscle's oxidative capacity, initially compromised by obesity.

Development of a histopathological index for skeletal muscle analysis in Rattus norvegicus (Rodentia: Muridae).

Skeletal muscle histopathological changes induced or caused by pathologies in animal models, can impair functionality, being the main focus of therapeutic studies. This study aimed to propose a histopathological index to assess, in a quantitative manner, skeletal muscle changes induced by experimental protocols for Rodentia's models. For the development, evaluation of fit and parsimony, replicability, and sensitivity index, Wistar rats from experiments with the same experimental design, but with different variation factors, were used to achieve different levels of damage. The anterior tibial muscle of these animals was collected, processed histologically, and stained with hematoxylin and eosin. The adjustment and parsimony of the index were availed through Confirmatory Factor Analysis, reproducibility for evaluation of three people trained through the Intra-Class Correlation, and the discrimination capacity through a one-way ANOVA Test. We pointed out the adjustment for the proposed index while the ICC showed high reproducibility (n = 56; k = 3; ICC = 0.9790) and differences in the extent of damage between groups, following the hierarchical association promoted by experimental model stresses. The results show that the proposed index has a good fit and parsimony (χ2 = 426.34; p < 0.0001), in addition to being easily replicable by other researchers who know the morphology of muscle tissue and its morphological changes. It is worth mentioning that the development of tools that facilitate histopathological analysis, and that can quantitatively express the findings, are of great importance for the studies of regenerative science, reinforcing the relevance of this study.

Morphometric aspects of the articular cartilage of rats treated with low-level laser therapy and exercise in a rheumatoid arthritis model

INTRODUCTION: Rheumatoid arthritis (RA) is classified as an autoimmune, chronic disease affecting diarthrodial joints and periarticular structures. OBJECTIVE: To evaluate whether low-intensity laser treatment (LLLT) and/or exercise reduce the deleterious effects of tissue in a rheumatoid arthritis model. METHODS: 128 rats were divided into two inflammatory periods: acute (7 days) and chronic (28 days) and subdivided into control, injury and treatment. The protocol with Freund's Complete Adjuvant was used in two inoculations, one intradermal and one intraarticular in the tibiofemoral joint, the control animals received saline solution. For treatment, LLLT 660 nm, 5 J/cm² was used in the sensitized joint and climbing exercise in stairways with an overload of 100 grams. After the experimental period, the animals were euthanized and the joints were prepared for morphometric analysis of the total thickness, superficial, deep, and cellular density of the articular cartilage. Generalized Linear Models with Sidak post-test were chosen. RESULTS: The control group was found to be different from the lesion group with greater joint cartilage thickness, andthe animals treated with exercise alone increased the joint cartilage compared to thecontrol group. CONCLUSION: The animals treated with laser association and exercise showed improvement in the morphometric aspects of the articular cartilage.

Heteropterys tomentosa and Interactions with the Musculoskeletal System: Systematic Review / Heteropterys tomentosa e Interações com o Sistema Musculoesquelético: Revisão Sistemática

Abstract Although Brazil is a country with the greatest plant biodiversity, there are still shortcomings regarding phytotherapy studies and their practical application. In Brazil alone there are 65 plants with psychoactive principles, and Heteropterys tomentosa, from the ethnobotanical point of view, is one of the most famous plants in the Midwest region, it is known for its aphrodisiac, physical and mental invigorating and depurative properties. The objective of this review was to point out the number of scientific articles published about the benefits of using the plant H. aphrodisiac in interactions with the musculoskeletal system. A consultation was performed in 10 databases: Embase, Scopus, Pubmed, Livivo, Science Direct, Web of science, Cochrane, Koreamed, Lilacs and Clinical trials for the elaboration of a systematic review, for this there was no limitation of time, language or type of study. Results: the search described found 111 articles, all primary studies; of these only 5 original studies (4.5%) were included in the review. Positive adaptations were observed in bones, tendons, muscles and hormone release, which resulted in improvements in exercise time and load, delaying fatigue and increasing functional capacity. However, the scarcity of studies, pointed out several gaps, opening space for other works. (AU)

Resumo Embora o Brasil seja um país com a maior biodiversidade vegetal, ainda existem carências com relação a estudos fitoterápicos e sua aplicação prática. Só no Brasil existem 65 plantas com princípios psicoativos, e a Heteropterys tomentosa, no ponto de vista etnobotânico, é uma das plantas mais famosas da região Centro-Oeste, ela é conhecida por propriedades afrodisíacas, de revigorante físico e mental, e depurativa. O objetivo desta revisão foi apontar a quantidade de artigos científicos publicados sobre os benefícios da utilização da planta H. aphrodisiaca em interações com o sistema musculoesquelético. Foi realizada uma consulta em 10 bases de dados, sendo elas: Embase, Scopus, Pubmed, Livivo, Science Direct, Web of science, Cochrane, Koreamed, Lilacs e Clinical trials para a elaboração de uma revisão sistemática, para isso não houve limitação de tempo, de língua ou tipo de estudo. A busca descrita encontrou 111 artigos, sendo todos estudos primários; destes apenas 5 estudos originais (4,5%) foram incluídos na revisão. Foram observadas adaptações positivas em ossos, tendões, músculos e liberação hormonal, que acarretaram melhorias no tempo e carga de exercício, retardando a fadiga e aumentando a capacidade funcional. Contudo, a escassez de estudos, apontou diversas lacunas, abrindo espaço para outros trabalhos. (AU)