scholarly journals Preventive effect and possible mechanisms of ultrashort wave diathermy on myogenic contracture in a rabbit model

2021 ◽  
Vol 104 (4) ◽  
pp. 003685042110549
Author(s):  
Qi-Yu Xu ◽  
Quan-Bing Zhang ◽  
Yun Zhou ◽  
A-Ying Liu ◽  
Feng Wang
Keyword(s):  
Muscle Atrophy ◽  
Myogenic Differentiation ◽  
Rabbit Model ◽  
Rectus Femoris ◽  
Control Group ◽  
Preventive Effect ◽  
Cross Sectional ◽  
Protein Levels ◽  
Group I ◽  
Ultrashort Wave

The purpose of this study was to determine the preventive effect of ultrashort wave diathermy on immobilization-induced myogenic contracture and to explore its underlying mechanisms. Forty-two rabbits were randomly assigned into control (Group C), immobilization (Group I, which was further divided into one week, Group I-1; two weeks, Group I-2; and four weeks, Group I-4, subgroups by the length of immobilization) and ultrashort wave prevention (Group U, which was further divided into one week, Group U-1; two weeks, Group U-2; and four weeks, Group U-4, by time of treatment) groups. Intervention effects were assessed by evaluating rectus femoris cross-sectional area (CSA), knee range of motion, and the protein levels for myogenic differentiation (MyoD) and muscle atrophy F-box (MAFbx-1) in the rectus femoris. Compared with those of Group C, in Groups I and U, total contracture, myogenic contracture, MyoD and MAFbx-1 levels were significantly elevated, and CSA was significantly smaller ( p < 0.05). Compared with those of Group I at each time point, MyoD levels were significantly elevated, MAFbx-1 levels were significantly lower, CSA was significantly larger, and myogenic contracture was significantly alleviated in Group U ( p < 0.05). In the early stages of contracture, ultrashort wave diathermy reduces muscle atrophy and delays the process of myogenic contracture during joint immobilization; the mechanism of this may be explained as increased expression of MyoD triggered by suppression of the MAFbx-1-mediated ubiquitin-proteasome pathway.

scholarly journals Effect of Ultrashort Wave on Joint Dysfunction and Muscle Atrophy in a Rabbit Model of Extending Knee Joint Contracture: Enhanced Expression of MyoD

2019 ◽  
Author(s):  
Feng Wang ◽  
Yun Zhou ◽  
Quan Bing Zhang ◽  
A Ying Liu ◽  
Hua Zhang Zhong ◽  
...  
Keyword(s):  
Knee Joint ◽  
Muscle Atrophy ◽  
Rabbit Model ◽  
Rectus Femoris ◽  
Joint Contracture ◽  
Passive State ◽  
Control Group ◽  
Wave Treatment ◽  
Protein Levels ◽  
Ultrashort Wave

Abstract Background As a common clinical disease, the incidence of joint contracture which is characterized by the reduction of range of motion (ROM) in the active or passive state of the joint has increased in recent years. This study was to investigate the effects of ultrashort wave on joint dysfunction and muscle atrophy in a rabbit model of extending knee joint contracture and its mechanism. Methods 35 rabbits underwent unilateral immobilization of a knee joint at full extension to cause joint contracture, and 5 rabbits were used for the control group. After 8 weeks immobilization, 35 rabbits were randomly divided into the following seven groups: I-8, R-1, R-2, R-4, T-1, T-2, and T-4. In the Group R-1, R-2 and R-4, the rabbits were experienced one, two, and four weeks self-recovery. In the Group T-1, T-2, and T-4, the rabbits were experienced one, two, and four weeks ultrashort wave treatment. The effect of self-recovery and ultrashort wave treatment on joint dysfunction and muscle atrophy was assessed by measuring the degree of total and myogenic contracture, evaluating the cross-sectional area (CSA) of rectus femoris and assessing the protein levels for MyoD. Results A tendency toward reduced the degree of total and myogenic contracture was observed after self-recovery and ultrashort wave treatment. A tendency toward increased the CSA of rectus femoris and the protein levels for MyoD was observed after self-recovery and ultrashort wave treatment. The ultrashort wave treatment led a better efficacy than self-recovery against the total and the myogenic contracture, the CSA and the protein levels for MyoD of rectus femoris. Conclusions Ultrashort wave ameliorates joint dysfunction and muscle atrophy via upregulating the expression of MyoD protein in a rabbit model of extending knee joint contracture.

scholarly journals Electrical Stimulation Attenuates Disuse Muscular Atrophy by Modulating Endoplasmic Reticulum Stress-induced Parkin-dependent Mitophagy

2022 ◽  
Author(s):  
Quan-Bing Zhang ◽  
A-Ying Liu ◽  
Qiao-Zhou Fang ◽  
Hai-Yang Zhang ◽  
Feng Wang ◽  
...  
Keyword(s):  
Endoplasmic Reticulum ◽  
Electrical Stimulation ◽  
Endoplasmic Reticulum Stress ◽  
Muscle Atrophy ◽  
Muscular Atrophy ◽  
Rabbit Model ◽  
Rectus Femoris ◽  
Protein Levels ◽  
Elevated Expression

Abstract Background: The aim of this study was to investigate the therapeutic effect of electrical stimulation on disuse muscular atrophy in a rabbit model of knee joint contracture and explore the role of endoplasmic reticulum stress-induced Parkin-dependent mitophagy in this process.Methods: Two sub-experiments were carried out successively in our study. In the first sub-experiment, 24 rabbits were divided into four groups on average based on the immobilization time: Ctrl 1, I-2, I-4, and I-6 groups. In the second sub-experiment, 24 rabbits were also divided into four groups on average in accordance with the process mode: Ctrl2, ES, NR, and EST groups. To test the time-dependent changes of the rectus femoris muscles after immobilization in rabbits, and to evaluate the effect of electrical stimulation on the atrophic rectus femoris muscles, the wet weights of rectus femoris muscles were assessed in this study, along with the protein levels of atrogin-1, p-PERK, Parkin and COXIV.Results: The wet weights of rectus femoris muscles, the protein levels of atrogin-1, p-PERK and Parkin increased after immobilization. It was also revealed that the protein levels of COXIV decreased after immobilization. Electrical stimulation was effective against muscle atrophy, the elevated expression of atrogin-1, p-PERK, Parkin, and the decreased expression of COXIV.Conclusions: Immobilization of unilateral lower limb could induce rectus femoris muscle atrophy, endoplasmic reticulum stress and Parkin mediated mitophagy. Endoplasmic reticulum stress-induced Parkin-dependent mitophagy may be one of the mechanisms by which electrical stimulation can play a significant role.

The Preventive Effect of Fig Leaves’s (Ficus carica L.) towards Colon Histopathological Feature and IL-6 Serum Level on Ulcerative Colitis Induced Mice

2016 ◽  
Vol 1 (4) ◽  
Author(s):  
Hartini Tiono
Keyword(s):  
Ulcerative Colitis ◽  
Serum Level ◽  
Interleukin 6 ◽  
Methanolic Extract ◽  
Chronic Inflammatory Disease ◽  
Control Group ◽  
Preventive Effect ◽  
Histopathological Feature ◽  
Group I ◽  
Control Group Group

Ulcerative colitis is a chronic inflammatory disease mainly affects sigmoid colon and rectum. The inflammation process will activate NF-κB and leads to proinflamatory cytokine release such as Interleukin-6 (IL-6). Fig leaves contain a high level of flavonoid which can prevent NF-κB activation, and further inhibits IL-6 secretion. This research aims to see the preventive effect of methanolic extract of fig leaves towards colon histopathological feature and IL-6 serum level on ulcerative colitis induced mice. Balb/C male mice were randomly assigned into 5 groups (n=5). The treatment groups were dextran suphate sodium (DSS) control group (group I), methanolic extract of Fig leaves dose 28 mg/ day control group (group II), and methanolic extract of Fig leaves dose 7 mg/ day (group III), 14 mg/ day (group IV), and 28 mg/ day (group V) for 14 days, which at the 8th till 14th day were given DSS to induce colitis. The results showed that both of colon mucosal damage and IL-6 serum level of group I were significantly different from other groups (p=0,029). In  conclusion, the methanolic extract of Fig leaves can improve colon mucous damage and decrease IL-6 serum level on ulcerative colitis-induced mice. Keywords: ulcerative colitis, fig leaves, colon mucousal damage, interleukin-6

scholarly journals Atrophy patterns in isolated subscapularis lesions

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Gernot Seppel ◽  
Andreas Voss ◽  
Daniel J. H. Henderson ◽  
Simone Waldt ◽  
Bernhard Haller ◽  
...  
Keyword(s):  
Muscle Atrophy ◽  
Area Ratio ◽  
Cross Sectional Area ◽  
Control Group ◽  
Sectional Area ◽  
Cross Sectional ◽  
Subscapularis Muscle ◽  
Mri Scans ◽  
The Mean ◽  
The Cross

Abstract Background While supraspinatus atrophy can be described according to the system of Zanetti or Thomazeau there is still a lack of characterization of isolated subscapularis muscle atrophy. The aim of this study was to describe patterns of muscle atrophy following repair of isolated subscapularis (SSC) tendon. Methods Forty-nine control shoulder MRI scans, without rotator cuff pathology, atrophy or fatty infiltration, were prospectively evaluated and subscapularis diameters as well as cross sectional areas (complete and upper half) were assessed in a standardized oblique sagittal plane. Calculation of the ratio between the upper half of the cross sectional area (CSA) and the total CSA was performed. Eleven MRI scans of patients with subscapularis atrophy following isolated subscapularis tendon tears were analysed and cross sectional area ratio (upper half /total) determined. To guarantee reliable measurement of the CSA and its ratio, bony landmarks were also defined. All parameters were statistically compared for inter-rater reliability, reproducibility and capacity to quantify subscapularis atrophy. Results The mean age in the control group was 49.7 years (± 15.0). The mean cross sectional area (CSA) was 2367.0 mm2 (± 741.4) for the complete subscapularis muscle and 1048.2 mm2 (± 313.3) for the upper half, giving a mean ratio of 0.446 (± 0.046). In the subscapularis repair group the mean age was 56.7 years (± 9.3). With a mean cross sectional area of 1554.7 mm2 (± 419.9) for the complete and of 422.9 mm2 (± 173.6) for the upper half of the subscapularis muscle, giving a mean CSA ratio of 0.269 (± 0.065) which was seen to be significantly lower than that of the control group (p < 0.05). Conclusion Analysis of typical atrophy patterns of the subscapularis muscle demonstrates that the CSA ratio represents a reliable and reproducible assessment tool in quantifying subscapularis atrophy. We propose the classification of subscapularis atrophy as Stage I (mild atrophy) in case of reduction of the cross sectional area ratio < 0.4, Stage II (moderate atrophy) in case of < 0.35 and Stage III (severe atrophy) if < 0.3.

scholarly journals Assessment of in Obsessive Compulsive Disorder

2021 ◽  
pp. 105-114
Author(s):  
Sarah Alaa Mohsen ◽  
Fatma Ahmed El Deeb ◽  
Ehab Sayed Ramadan ◽  
Mai Abd El-Raouf Eissa
Keyword(s):  
Obsessive Compulsive Disorder ◽  
Test Performance ◽  
Age Of Onset ◽  
Neuropsychological Test ◽  
Control Group ◽  
Obsessive Compulsive ◽  
Cross Sectional ◽  
Compulsive Disorder ◽  
Group I ◽  
Significant Difference

Background: Obsessive compulsive disorder (OCD) is a common and potentially debilitating disorder. Neuropsychological assessment provides unique complementary information that is critical for evaluating higher cortical abilities. This study aimed to assess the neuropsychological functions in OCD patients which can then point to the brain structures or pathways and to study the correlation between these assessments and different clinical variables. Methods: This cross-sectional case control study had included sixty patients who were divided into two groups, Group I: thirty OCD patients diagnosed by DSM-IV and Group II: thirty healthy controls who were recruited from the community, matched with patients’ age, gender, and education. Results: The age of onset in our study was 19.13 ± 0.35 years, the mean duration was 7.44 ± 3.88 years, 40% of the studied cases had severe OCD symptoms and 33.3% of them were compulsive cleaners. There was a high significant difference between the two groups regarding WCST in favor of the control group. There was a high significant difference between the two groups regarding ROCF where the control group showed better results than the OCD patients. Conclusions: Neuropsychological test performance remains an informative and objective means of investigation, especially when applied to psychiatric disorders. The executive functions in OCD patients were impaired in comparison to the normal study subjects.

Prevalence of subclinical synovitis of the hand in patients with systemic lupus erythematosus

Lupus ◽  
2020 ◽  
Vol 29 (11) ◽  
pp. 1423-1429
Author(s):  
Carlos A Guillén-Astete ◽  
Marcelino Revenga-Martinez ◽  
Antonio Zea-Mendoza ◽  
Elia Brito-Brito
Keyword(s):  
Lupus Erythematosus ◽  
Structural Damage ◽  
Cross Sectional Study ◽  
Control Group ◽  
Cross Sectional ◽  
Eular Recommendations ◽  
Group I ◽  
Joint Symptoms ◽  
Different Levels ◽  
Subclinical Synovitis

Objectives To determine the prevalence of subclinical synovitis in Lupus patients without peripheral joint symptoms, in those with arthralgias without arthritis and those with episodic arthritis but without radiological structural damage. Methods We conducted a multicentre cross-sectional study. Patients with lupus from those three categories were recruited to take part in a greyscale ultrasound scan performed by an expert blinded rheumatologist. Data from a historical control group from a previous study was also included for comparisons. Images were assessed separately in order to determine the presence and level of synovitis following Eular recommendations. Results Ninety-six patients (88.5% female) with an average age of 40 ± 6.2 years old, were included. SLICC/ACR score was 0.6 ± 0.3 in the group without joint symptoms (group 0), 0.8 ± 0.3 in the group with arthralgias (group I) and 1.1 ± 0.4 in the group with episodic arthritis. The global prevalence of subclinical synovitis was 38.5%. In group 0, that prevalence was 30%. The time since onset of symptoms of patients with subclinical synovitis was longer than the rest of the patients (9.4 ± 2.2 vs 6.5 ± 4.0 years, P < 0.001). No other remarkable association was founded with clinical features of the disease. Conclusions This is the first study focused on subclinical synovitis in patients with lupus. Other previous studies had included patients with different levels of arthropathy. Subclinical synovitis does exist in lupus patients in over a third of patients. Its meaning remains unclear and must be a topic of further studies.

scholarly journals Skeletal Muscle Response to Deflazacort, Dexamethasone and Methylprednisolone

Cells ◽  
2019 ◽  
Vol 8 (5) ◽  
pp. 406 ◽  
Author(s):  
Alan Fappi ◽  
Juliana de Carvalho Neves ◽  
Leandro Nunes Sanches ◽  
Pedro Victor Massaroto e Silva ◽  
Guilherme Yuiti Sikusawa ◽  
...  
Keyword(s):  
Muscle Atrophy ◽  
Saline Solution ◽  
Fiber Type ◽  
Neuromuscular Diseases ◽  
Study Groups ◽  
Control Group ◽  
Cross Sectional ◽  
Genes Expression ◽  
Male Wistar Rats ◽  
Synthetic Glucocorticoids

Glucocorticoids represent some of the most prescribed drugs that are widely used in the treatment of neuromuscular diseases, but their usage leads to side effects such as muscle atrophy. However, different synthetic glucocorticoids can lead to different muscle effects, depending upon its chemical formulation. Here, we intended to demonstrate the muscle histologic and molecular effects of administering different glucocorticoids in equivalency and different dosages. Methods: Seventy male Wistar rats distributed into seven groups received different glucocorticoids in equivalency for ten days or saline solution. The study groups were: Control group (CT) saline solution; dexamethasone (DX) 1.25 or 2.5 mg/kg/day; methylprednisolone (MP) 6.7 or 13.3mg/kg/day; and deflazacort (DC) 10 or 20 mg/kg/day. At the end of the study, the animals were euthanized, and the tibialis anterior and gastrocnemius muscles were collected for metachromatic ATPase (Cross-sectional area (CSA) measurement), Western blotting (protein expression of IGF-1 and Ras/Raf/MEK/ERK pathways) and RT-PCR (MYOSTATIN, MuRF-1, Atrogin-1, REDD-1, REDD-2, MYOD, MYOG and IRS1/2 genes expression) experiments. Results: Muscle atrophy occurred preferentially in type 2B fibers in all glucocorticoid treated groups. DC on 10 mg/kg/day was less harmful to type 2B fibers CSA than other doses and types of synthetic glucocorticoids. In type 1 fibers CSA, lower doses of DC and DX were more harmful than high doses. DX had a greater effect on the IGF-1 pathway than other glucocorticoids. MP more significantly affected P-ERK1/2 expression, muscle fiber switching (fast-to-slow), and expression of REDD1 and MyoD genes than other glucocorticoids. Compared to DX and MP, DC had less of an effect on the expression of atrogenes (MURF-1 and Atrogin-1) despite increased MYOSTATIN and decreased IRS-2 genes expression. Conclusions: Different glucocorticoids appears to cause muscle atrophy affecting secondarily different signaling mechanisms. MP is more likely to affect body/muscles mass, MEK/ERK pathway and fiber type transition, DX the IGF-1 pathway and IRS1/2 expression. DC had the smallest effect on muscle atrophic response possibly due a delayed timing on atrogenes response.

scholarly journals Comparative Evaluation between Sulfasalazine Alone and in Combination with Herbal Medicine on DSS-Induced Ulcerative Colitis Mice

2017 ◽  
Vol 2017 ◽  
pp. 1-10 ◽  
Author(s):  
Mi-Rae Shin ◽  
Kyeong Jo Kim ◽  
Soo Hyun Kim ◽  
Su Ji Kim ◽  
Bu-Il Seo ◽  
...  
Keyword(s):  
Herbal Medicine ◽  
Comparative Evaluation ◽  
Control Group ◽  
Inflammatory Infiltration ◽  
Group V ◽  
Group Iii ◽  
Protein Levels ◽  
Group I ◽  
Apoptotic Protein ◽  
Mitogen Activated Protein

The present study aimed to investigate the comparative evaluation of pharmacological efficacy between sulfasalazine alone and sulfasalazine in combination with herbal medicine on dextran sodium sulfate- (DSS-) induced UC in mice. Balb/c mice received 5% DSS in drinking water for 7 days to induce colitis. Animals were divided into five groups (n=9): Group I (normal group), Group II (DSS control group), Group III (DSS + sulfasalazine (30 mg/kg)), Group IV (DSS + sulfasalazine (60 mg/kg)), and Group V (DSS + sulfasalazine (30 mg/kg) + Cinnamomi Cortex and Bupleuri Radix mixture (30 mg/kg) (SCB)). Colonic pathological changes were analyzed using hematoxyline/eosin staining. The antioxidant, inflammatory, and apoptotic protein levels were determined using western blotting. SCB supplementation, as well as sulfasalazine, suppressed colonic length and mucosal inflammatory infiltration. In addition, SCB treatment significantly reduced the expression of proinflammatory signaling molecules through suppression of both mitogen-activated protein kinases (MAPK) and nuclear factor-kappa B (NF-κB) signaling pathways and prevented the apoptosis of the colon. Moreover, SCB administration significantly led to the upregulation of antioxidant enzymes including SOD and catalase. Taken together, SCB treatment might offer a better treatment for human UC than sulfasalazine alone or may be useful as an alternative therapeutic strategy against UC, without any evidence of side effects.

scholarly journals Use of Triticum aestivum in open wound healing: a clinical, pathological, and tensiometric assessment in the rabbit model

2014 ◽  
Vol 66 (6) ◽  
pp. 1757-1761 ◽  
Author(s):  
M.T. Tillmann ◽  
A.O.C. Felix ◽  
E.N. Mueller ◽  
S.R. Felix ◽  
G.H. Alves ◽  
...  
Keyword(s):  
Wound Healing ◽  
Granulation Tissue ◽  
Rabbit Model ◽  
Control Group ◽  
Epithelial Tissue ◽  
Strength Evaluation ◽  
Group I ◽  
Scar Quality ◽  
Group Ii ◽  
Tension Strength

While Triticum sp. has been shown to act in wound healing, stimulating collagen synthesis by fibroblasts, the use of this plant extract has yet to be assessed in vivo, in commercially viable presentations. This study used rabbits and assessed, on days seven, 14, and 21, the presence or absence of granulation tissue and epithelialization, histopathological structures, and scar quality through the breaking and tension strength. Treatments, performed for 21 days, were aqueous extract of T. aestivum at a concentration of 2mg/mL (group I) and 10mg/mL (group II) and a nonionic cream (control group). We demonstrate that the formation of granulation tissue was not significantly different between treatments. In the analysis of epithelial tissue, wounds in group II differed from other treatments by day 7. On days 14 and 21 there was no significant clinical difference between groups. In the histopathological evaluation, scar quality and rupture strength did not differ between the groups in the studied period. In the tension strength evaluation, group I differed from the others, presenting a higher tension strength overall. The studied treatments did not differ regarding healing evolution of the skin wounds, but T. aestivum extract, at 2mg/mL, presents better results in the tension strength evaluation.

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