Name: Establishment of a Rat Model of Skeletal Muscle Injury
Uploaded: 2023-08-25T14:30:00
Description: Watch this Scientific Journal Video about Establishment of a Rat Model of Skeletal Muscle Injury at JoVE.com

establishment of a rat model of skeletal muscle injury

مدلك يعتمد على التلاعب باللفة في Ding لعلاج إصابة العضلات في نموذج الفئران

Muscle injuries are common traumatic injuries in clinical and daily life, caused by external blows (contusions) or chronic overstrain of muscle fibers (strains), etc., resulting in muscle dysfunction and pain, even seriously affecting the patient&#39;s quality of life1. Starting rehabilitation as early as possible after an acute strain injury is the key to reducing the time to return to sports2&#160;and in reducing pain3,4. In modern Western medicine, clinical first aid for muscle injuries follows the principles of rest, ice, compression, and elevation (RICE) to stop injurious bleeding into the muscle tissue5&#160;and non-steroidal anti-inflammatory drugs to relieve pain6. The discovery of novel therapies such as exosomes7&#160;and tissue engineering8&#160;became potential treatment strategies for skeletal muscle diseases, compensating for previous pharmacological treatments&#39; shortcomings. However, it can also increase the cost of treatment for patients, putting them under tremendous financial pressure9. Therefore, alternative and complementary therapies are recommended for treating musculoskeletal problems10. Tuina is widely used clinically in China as a traditional medical method and is popular among patients for its efficacy and fewer side effects. Tuina therapy for musculoskeletal disorders can alleviate pain and improve function11,12,13. Mr. Ding Jifeng, a famous Shanghai Tuina practitioner, founded Ding&#39;s roll method14. It is a unique rolling and crushing technique with a large force area, uniform and gentle force, and intense penetration.
Different animal models are based on different etiologies. They have advantages and disadvantages, and the selection of correct and appropriate animal models is of great significance to basic experiments, which helps understand the cellular and molecular signaling pathways of regeneration and repair after skeletal muscle injury to develop new therapies for treating the treatment of skeletal muscle diseases. Chemically induced models of muscle injury are widely used, with injections of skeletal muscle causing myofiber necrosis and producing regenerated areas that can effectively regenerate within 2 weeks15. Both notexin and bupivacaine can cause muscle damage. However, notexin can cause more severe myotoxic damage to skeletal muscle than bupivacaine, and natural functional recovery is relatively slower16. Drug intramuscular injection molding not only takes less time but also has controlled effects and extent of skeletal muscle damage. This quantifiable control makes successful molding less difficult15,17.
Inflammatory response is an essential biological response that has been extensively studied in the context of myopathy18,19. In the early stages of skeletal muscle injury, myofiber necrosis disrupts local muscle homeostasis, and many inflammatory cells infiltrate the injury site, secreting many pro-inflammatory cytokines19. Creatine kinase (CK) is a traditional serum biomarker for assessing skeletal muscle injury. However, it lacks tissue specificity20&#160;and sensitivity21, which limits its ability to assess the extent of drug-induced muscle damage and indirectly report the extent of muscle recovery after injury. Novel biomarkers, including fatty acid binding protein 3 (FABP3), have recently shown relatively high tissue specificity and sensitivity in rodent models of skeletal muscle injury. FABP3 is a family of binding proteins expressed primarily in cardiac and skeletal muscle cells and implicated in fatty acid metabolism, transport, and signaling22. Therefore, we chose a combination of two biomarkers, CK and FABP3, to assess the extent of notexin-induced skeletal muscle damage and recovery after treatment.
In rodents, the muscles are shallow, and the skin area is small, which also determines that the various parameters of massage in rodents will not be the same as in humans, such as in animal therapy, the massage therapist should treat them with less force using Ding&#39;s roll method, and may not be conducive to the operation of this technique due to the small size of the injured area, which can ultimately lead to a reduction in the effectiveness of the massage. Therefore, the experiment utilized the rolling massager made in-house, which conforms to the characteristics of Ding&#39;s roll method, to intervene and evaluate the therapeutic effect of the notexin-induced skeletal muscle injury model in rats, which helps to standardize the parameters of Tuina in experimental animal studies in order to profoundly investigate the molecular mechanism of action of Tuina, a traditional Chinese medicine treatment method, on musculoskeletal diseases.

تسليط الضوء على المؤلف: أداء تدليك Tuina في الفئران باستخدام مدلك عصامي 

محاكاة طريقة لفة دينغ على إصابة العضلات التي يسببها Notexin في الفئران

The scope of our research is the biological mechanism of tuina in the treatment of musculoskeletal diseases. Here we are trying to make the self-made tuina device to standardize and effectively perform tuina treatments on laboratory animals. We are addressing the inability to perform this rolling manipulation with pairs by creating a massager that can simulate this rolling manipulation on rats, and verifying the effectiveness of the massager on rats with muscle injuries.We will focus on the questions of how efficacious the rolling massager is on the skeletal muscle injury in rats under different parameters in future standardized research.

Watch this Scientific Journal Video about Establishment of a Rat Model of Skeletal Muscle Injury at JoVE.com

Establishment of a Rat Model of Skeletal Muscle Injury  

إنشاء نموذج الفئران لإصابة العضلات والهيكل العظمي

ابدأ بتقسيم الفئران عشوائيا إلى ثلاث مجموعات من ثمانية فئران لكل منها ، بما في ذلك مجموعات التحكم ، و notexin ، و notexin مع مجموعات tuina. إزالة الشعر من الطرف السفلي الأيمن مع كريم إزالة الشعر بعد تخدير الفئران. ثم تطهير الجلد بثلاث جولات متناوبة من محلول تطهير iota four و 75٪كحول في حركة خارجية دائرية.لإنشاء نموذج إصابة العضلات الهيكلية ، استخدم حقنة ملليلتر واحد مع إبرة قياس 30 لحقن محلول notexin في العضل في عضلة الساق في ساق واحدة فقط. انتظر لمدة ثلاث ثوان قبل سحب الإبرة. حقن الفئران في المجموعة الضابطة مع 200 ميكرولتر من محلول ملحي.نقل الفئران المخدرة إلى أقفاص فارغة مع الفراش نظيفة. راقب بصريا لون الأنسجة ومعدل التنفس حتى تستعيد الفئران وعيها الكافي. أعد الفئران إلى قفص المنزل وعادة ما تربيها لمدة 24 ساعة.وقد لوحظت الخصائص المورفولوجية للعضلات الهيكلية الفئران بعد الإصابة عن طريق تلطيخ الهيماتوكسيلين ويوزين. أظهرت عضلة الساق المصابة بحقن notexin تمزق العديد من خلايا العضلات مقارنة بالضوابط. كانت الخلايا ضامرة ونخرية وغير منتظمة الترتيب ، مع تسلل عال من العدلات والخلايا الليمفاوية حول المنطقة المصابة.

Research

JoVE Journal

Medicine

Establishment of a Rat Model of Skeletal Muscle Injury

Mimicking Ding's Roll Method on Notexin-Induced Muscle Injury in Rats

Ding's roll method is one of the most commonly used manipulations in traditional Chinese massage (Tuina) clinics and one of the most influential ...

Assembly of a Rolling Massager for Tuina Therapy

تجميع مدلك المتداول لعلاج توينا

Tuina Therapy in Rat Model of Skeletal Muscle Injury

علاج Tuina في نموذج الفئران لإصابة العضلات والهيكل العظمي

Blood and Tissue Collection from Rats After Tuina Therapy

جمع الدم والأنسجة من الفئران بعد العلاج توينا