Antinociceptive and anti-inflammatory effects of electroacupuncture on experimental arthritis of the rat temporomandibular joint

2012 ◽  
Vol 90 (4) ◽  
pp. 395-405 ◽  
Author(s):  
Delane Viana Gondim ◽  
Jéssyca Lima Costa ◽  
Suellen Sousa Rocha ◽  
Gerly Anne de Castro Brito ◽  
Ronaldo de Albuquerque Ribeiro ◽  
...  
Keyword(s):  
Vascular Permeability ◽  
Temporomandibular Joint ◽  
Sham Group ◽  
Neutrophil Migration ◽  
Low Frequency ◽  
Control Group ◽  
Histopathological Analysis ◽  
Myeloperoxidase Activity ◽  
Inflammatory Parameters ◽  
Anti Inflammatory

This study investigated the antinociceptive and anti-inflammatory effects of electroacupuncture (EA) on zymosan-induced acute arthritis of the rat temporomandibular joint (TMJ). Male Wistar rats were injected with saline or zymosan (control group; 2 mg) into the left TMJ. Low frequency EA (10 Hz, 30 min) was performed at acupoints (LI4, LI11, ST36, ST44) or sham points 2 h after or 1 h before zymosan administration. Mechanical hypernociception was accessed by the electronic Von Frey method after zymosan administration. Rats were sacrificed 6 h after zymosan administration and the joint was removed for histopathological analysis, myeloperoxidase activity assessment, vascular permeability observations, and immunohistochemical verification of inflammatory mediators. The results showed that EA inhibited zymosan-induced hypernociception, compared with the control group and with the sham group (p < 0.05). The results showed that EA inhibited inflammatory parameters such as neutrophil migration, vascular permeability, and tumour necrosis factor α (TNF-α), cyclooxygenase-2 (COX-2), and inducible nitric oxide synthase (iNOS) expression in the TMJ compared with the sham group (p < 0.05). Histopathological analysis showed that EA significantly inhibited edema and periarticular infiltration (p < 0.05) compared with the control and sham groups. EA at acupoints produced antinociceptive and anti-inflammatory effects on zymosan-induced arthritis in the rat TMJ.

Effects of 900-MHz electromagnetic fields exposure throughout middle/late adolescence on the kidney morphology and biochemistry of the female rat

2018 ◽  
Vol 34 (10) ◽  
pp. 693-702 ◽  
Author(s):  
Derya Öztürk Okatan ◽  
Ali Ertan Okatan ◽  
Hatice Hancı ◽  
Selim Demir ◽  
Serap Özer Yaman ◽  
...  
Keyword(s):  
Sham Group ◽  
Rat Kidney ◽  
Late Adolescence ◽  
Female Rats ◽  
Stress Index ◽  
Control Group ◽  
Histopathological Analysis ◽  
Female Rat ◽  
Lumbar Region ◽  
Kidney Morphology

The effect of the electromagnetic field (EMF) established when cell phones are in use on human health, and particularly the head, has been the subject of major scientific research. Phones are usually carried near the lumbar region when not in use, and the kidneys will also inevitably be affected by such fields. We investigated the effects on the kidneys of female rats exposed to a continuous 900-megahertz (MHz) EMF for 1 h daily in mid-late adolescence. Control, sham, and EMF groups were established. The EMF was applied to the application group rats daily on postnatal days 35–59. A pseudo-megahertz effect was applied to sham group rats. All animals were euthanized on postnatal day 60. Right kidney tissues were subjected to routine procedures. Malondialdehyde, total antioxidant status, and total oxidant status (TOS) were investigated in left kidneys, and the oxidative stress index (OSI) was also calculated from these. Histopathological analysis revealed no pathology in either the control or sham groups. However, findings including hemorrhage in glomerulus, vacuolization and irregularity in the proximal and distal tubular epithelium, diffuse glomerular degeneration and edema, occasional degeneration in Bowman capsules, hemorrhage in the medullary region, disturbed nucleus location and morphology, and tubular edema in the cortex were observed in the EMF groups. TOS and OSI values were lower in the EMF group (9.4316 ± 1.0211 and 0.8461 ± 0.0826, respectively) and the sham group (8.2171 ± 0.6437 and 0.7358 ± 0.0545, respectively) than in the control group (11.1522 ± 1.3389 and 1.0085 ± 0.1174, respectively) ( p < 0.05). In conclusion, exposure to a continuous 900-MHz EMF for 1 h daily during middle and late adolescence may cause various changes in the female rat kidney at postnatal day 60.

Anti-Inflammatory and Autonomic Effects of Electroacupuncture in a Rat Model of Diet-Induced Obesity

2018 ◽  
Vol 36 (2) ◽  
pp. 103-109 ◽  
Author(s):  
Xiaoyan Jie ◽  
Xu Li ◽  
Jian-Qing Song ◽  
Dan Wang ◽  
Jian-Hua Wang
Keyword(s):  
High Fat Diet ◽  
Low Frequency ◽  
Control Group ◽  
Vagal Activity ◽  
Diet Induced Obesity ◽  
Tnf Α ◽  
Before And After ◽  
Anti Inflammatory ◽  
Normal Food ◽  
Necrosis Factor

Objective To study the effect of electroacupuncture (EA) on the cholinergic anti-inflammatory pathway (CAP) by measurement of vagal activity in rats with high-fat diet (HFD)-induced obesity. Methods Diet-induced obesity (DIO) was induced in 30 rats by feeding them a HFD for 12 weeks. A further 10 rats fed normal food comprised the lean diet (LD) control group. DIO rats were further subdivided into three groups that received a HFD only (HFD group, n=10), a HFD plus electroacupuncture (HFD+EA group, n=10) or a HFD plus minimal acupuncture (HFD+MA group, n=10). EA and MA treatments were continued for 8 weeks. Heart rate variability (HRV) was used to measure the function of the autonomic nervous system before and after treatment. ELISA was used to determine acetylcholine (ACh) and tumour necrosis factor (TNF)-α levels in the serum. Real-time PCR was used to assess the mRNA expression of α7-subtype nicotinic acetylcholine cholinergic receptors (α7nAChRs) and TNF-α in the mesenteric white adipose tissues (MWAT). Results EA but not MA significantly reduced rats’ bodyweight. No difference was found in the low frequency (LF), high frequency (HF) and the balance between LF and HF (LF/HF) components of HRV before treatment. After the EA intervention, HF was elevated and LF/HF was reduced in the HFD+EA group comparedwith the HFD group. TNF-α in the serum and MWAT were increased in the HFD group, but were reduced in the HFD+EA group. Furthermore, EA promoted expression of α7nAChRs and ACh in the MWAT. There was no difference between the HFD and HFD+MA groups for any indices. Conclusions EA enhanced vagal activity, promoted ACh release and activated α7nAChRs in the MWAT, leading to inhibition of proinflammatory cytokine production.

scholarly journals Phytochemical-induced reduction of pulmonary inflammation during Klebsiella pneumoniae lung infection in mice

2014 ◽  
Vol 8 (07) ◽  
pp. 838-844 ◽  
Author(s):  
Shruti Bansal ◽  
Sanjay Chhibber
Keyword(s):  
Lung Tissue ◽  
Histopathological Examination ◽  
Curcuma Longa ◽  
Pulmonary Inflammation ◽  
Bacterial Load ◽  
Neutrophil Infiltration ◽  
Lung Infection ◽  
Control Group ◽  
Inflammatory Parameters ◽  
Anti Inflammatory

Introduction: Curcumin, a polyphenol derived from the herb Curcuma longa, has number of antioxidant, anti-inflammatory, antimicrobial, and anti-carcinogenic activities. Its anti-inflammatory property was here studied alone and in combination with clarithromycin in a mouse model of acute inflammation. Methodology: A total of 80 mice divided into four groups were used. Mice receiving curcumin and/or clarithromycin were fed orally with curcumin (150 mg/kg/day) for 15 days prior to infection, whereas clarithromycin was administered orally (30 mg/kg/day) 12 hours post infection. Simultaneously, the control group receiving only infection but no treatment was also set up. Bacterial load estimation, histopathological examination and analysis of inflammatory parameters was performed on various days for all groups. Results: Intranasal inoculation of bacteria resulted in significant increase in neutrophil infiltration along with increased production of various inflammatory mediators (malondialdehyde, myeloperoxidase, nitric oxide, TNFα) in lung tissue. Clarithromycin treatment significantly decreased the bacterial load and other inflammatory components in infected mice, but animals receiving curcumin alone or in combination with clarithromycin showed a much more significant (p < 0.05) reduction in neutrophil influx along with reduced levels of various inflammatory parameters. Though treatment with curcumin did not reduce the bacterial load, in combination with clarithromycin, both bacterial proliferation and lung tissue damage were checked. Conclusions: Though clarithromycin, because of its associated side effects, may not be the preferred treatment, it can be used in conjunction with curcumin. The latter as an adjunct therapy will help to down regulate the exaggerated state of immune response during acute lung infection.

scholarly journals Effect of metformin gel against imiquimod–induced psoriasis in mice

2019 ◽  
Vol 10 (2) ◽  
pp. 795-802
Author(s):  
Haider F. Alsaedi ◽  
Haider Falih Shamikh Al-Saedi ◽  
Adeeb Ahmed Kadhim Al-Zubaidy ◽  
Mukhallad Abdul Kareem Ramadhan ◽  
Hussein Abdelamir Mohammad
Keyword(s):  
Biochemical Parameters ◽  
Negative Control Group ◽  
Negative Control ◽  
Tissue Homogenate ◽  
Control Group ◽  
Fourth Group ◽  
Inflammatory Parameters ◽  
Induction Group ◽  
Ointment Base ◽  
Anti Inflammatory

Imiquimod-induced psoriasis is an animal model of psoriasis.  The antidiabetic metformin had anti-inflammatory, immunomodulation, antiangiogenesis and antiproliferative effect. The objective of this study was to evaluate the possible beneficial effect of metformin gel against imiquimod-induced psoriasis-like form by scoring the erythema and scaling besides measuring of tissue homogenate levels of IL17/IL23. Swiss albino mice were used in this experiment imiquimod 5% cream applied on shaved back of mice for six days, and this is an induction group and compared with a negative control group that involved mice treated with ointment base only for six days. Third group; metformin 10% gel applied on the back of mice with imiquimod for six days. The fourth group included used of metformin 15% gel with imiquimod for six days. This data was analysed for significant level when p ≥ 0.05 by using either ANOVA test for biochemical parameters levels evaluation.    Furthermore, imiquimod 5% cream of induction group caused an elevation of inflammatory parameters; IL17 and IL23 in skin tissue homogenate when being compared to   IL17   and IL23 level of the control group. Whereas, metformin 10% gels showed levels of IL17 and IL23 with significant different from induction group. In addition, metformin 15% gels exerted a significantly low level of IL17 and IL23. The possible considerable antipsoriatic activity of topical metformin gel through reducing scaling and erythema and mediated through modest anti-inflammatory effects by suppressing levels of IL17/23.

scholarly journals Effectiveness of Physical Therapy in the Correction of the Functional Status of the Temporomandibular Joint in Arthrosis

2021 ◽  
Vol 6 (6) ◽  
pp. 188-193
Author(s):  
M. G. Aravitska ◽  
◽  
L. M. Sheremeta ◽  
S. I. Danylchenko ◽  
Dovgan O. V. ◽  
...  
Keyword(s):  
Physical Therapy ◽  
Temporomandibular Joint ◽  
Mouth Opening ◽  
Masticatory Muscles ◽  
Main Group ◽  
Control Group ◽  
Maxillofacial Region ◽  
Therapeutic Exercises ◽  
Inflammatory Drugs ◽  
Anti Inflammatory

The purpose of the study was to evaluate the effect of a physical therapy program on the state of functioning of the maxillofacial region in patients with arthrosis of the temporomandibular joint. Materials and methods. The study involved 33 people with arthrosis of the temporomandibular joint of the II-III degrees, which were divided into 2 groups – control and main. The control group consisted of 18 people who received arthrosis therapy only with non-steroidal anti-inflammatory drugs. The main group consisted of 15 people who additionally underwent the developed program of physical therapy (therapeutic exercises, massage, post-isometric relaxation, kinesiotaping of the masticatory muscles, neck muscles, cervical-collar zone; paraffin therapy course for the temporomandibular joint area, patient education). Complaints of patients, the intensity of pain in the temporomandibular joint on a visual analogue scale, the amount of mouth opening were determined, and auscultation of the joint was performed. Results and discussion. After the completion of the treatment course (for patients of the control group) and physical therapy (for the patients of the main group), pain in the temporomandibular joint did not manifest itself at rest and during movement. This is explained, in particular, by the fact that the basis of conservative treatment of arthrosis is the use of non-steroidal anti-inflammatory drugs with analgesic effects. At the same time, the usage of physical therapy, in comparison with medications, in the main group was statistically significant (p <0.05) in relation to control patients, it improved the functional activity of the jaw area and the functioning of the temporomandibular joint, which was manifested by a decrease in the number of persons with complaints of pathological sounds during jaw movements and their auscultatory detection, discomfort when chewing, as well as an increase in the magnitude of opening the mouth. Restoration of the condition of patients with diseases of the maxillofacial region, and, in particular, the temporomandibular joint, is an urgent problem not only for dentists, but also for specialists in the field of rehabilitation, in particular, physical therapists. The objectives of physical therapy in patients with arthrosis of the temporomandibular joint are to reduce the load on the joint, eliminate and reduce pain, synovitis, myalgia, improve joint function, stimulate and activate metabolic processes in cartilaginous and bone tissues, normalize blood flow, and thus improve quality of life. Conclusion. Physical therapy means improve the functional ability of the temporomandibular joint in the complex recovery of patients with arthrosis statistically significantly better than monotherapy with non-steroidal anti-inflammatory drugs

scholarly journals Effect of Diazepam on Severity of Acute Pancreatitis: Possible Involvement of Peripheral Benzodiazepine Receptors

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Alireza Abed ◽  
Mohsen Minaiyan ◽  
Azadeh Safaei ◽  
Diana Taheri
Keyword(s):  
Acute Pancreatitis ◽  
Cell Injury ◽  
Benzodiazepine Receptors ◽  
Serum Levels ◽  
Control Group ◽  
Myeloperoxidase Activity ◽  
Pathological Alteration ◽  
Peripheral Benzodiazepine Receptors ◽  
Anti Inflammatory

Acute pancreatitis is a lethal inflammatory condition of pancreas with high mortality rate. There is a pressing need for research to explore active agents and novel mechanisms involving in the treatment of pancreatitis. Clinical studies have shown after the initial acinar cell injury plasma levels of pro-inflammatory cytokines are elevated in patients with acute pancreatitis and the degree of cytokine elevation correlates with disease severity. Diazepam may decrease interleukin release from macrophages, suppress neutrophil activities, and exhibit anti-inflammatory effects. So it is expected that in vivo pretreatment of acute pancreatitis with different doses of diazepam can attenuate its severity. Thus, we evaluated the effects of diazepam, intraperitoneally (5, 10, and 20 mg/kg i.p.), intracerebroventricularly (ICV 10 μg), and concurrently with flumazenil (1 mg/kg) on cerulein-induced acute pancreatitis in mice. Interestingly, the pretreatment with diazepam (5 mg/kg i.p.) reduced significantly the inflammatory response of acute pancreatitis by ameliorating pancreatic edema, amylase and lipase serum levels, myeloperoxidase activity, pancreatic TNF-alpha, and pathological alteration compared to control group. Diazepam i.c.v. was ineffective, suggesting that central benzodiazepine receptors have no significant role in this property. These results demonstrate that pretreatment with diazepam exhibits anti-inflammatory property in cerulein-induced acute pancreatitis possibly through peripheral benzodiazepine receptors.

scholarly journals Evaluation of anti-nociceptive, anti-inflammatory and hepatoprotective effects of methanol extract of Mazus pumilus (Burm. f.) Steenis (Mazaceae) herb

2021 ◽  
Vol 18 (4) ◽  
pp. 799-807
Author(s):  
Saiqa Ishtiaq ◽  
Ayesha Ilyas ◽  
Numera Irshad ◽  
Uzma Niaz ◽  
Uzma Hanif ◽  
...  
Keyword(s):  
Methanol Extract ◽  
Inflammatory Activity ◽  
Control Group ◽  
Tail Flick ◽  
Histopathological Analysis ◽  
Standard Drug ◽  
Rat Paw Edema ◽  
Hepatoprotective Effects ◽  
Anti Inflammatory ◽  
Different Doses

Purpose: This study was designed to investigate the anti-nociceptive, anti-inflammatory and hepatoprotective activities of the methanol extract of Mazus pumilus (Mazaceae) herb. Methods: Anti-nociceptive activity was determined using hot plate, tail flick and acetic acid-induced writing methods. Carrageenan-induced rat paw edema (0.1 mL of 1 %) model was used for the assessment of anti-inflammatory activity. The methanol extract was administered orally at three different doses (150, 300 and 600 mg/kg) to three separate groups in all the experiments. Diclofenac sodium (50 mg/kg) was used as standard drug while control group received DMSO (1 %, 10 mL/kg). The hepatocurative effect of methanol extract of M. pumilus (400 mg/kg) was determined in isoniazid (50 mg/kg) and rifampicin (100 mg/kg) induced liver injury. Silymarin (100 mg/kg) was used as standard drug for comparison. The control group received distilled water (10 mL/kg). Preliminary phytochemical screening was also carried out. Results: The methanol extract of M. pumilus significantly (p < 0.05) augmented latency time and reduced the number of writhes in the pain models at all doses used for the assessment of antinociceptive actions. The anti-inflammatory activity of different doses of extract was evaluated by measuring the reduction in the size of the paw. A significant (p < 0.05) hepatocurative effect was observed when administered after anti-tuberculosis drugs. Histopathological analysis of the liver tissues also revealed restored hepatocellular architecture. Conclusion: The results demonstrate the anti-nociceptive, anti-inflammatory and hepatoprotective effects of the methanol extract of M. pumilus, thus substantiating the ethnomedical claims associated with the herb.

scholarly journals Migración de neutrófilos en larvas de pez cebra expuestos a extractos de sofrito de tomate

2021 ◽  
Vol 70 (3) ◽  
pp. 216-224
Author(s):  
Cristina Arteaga ◽  
Alberto Bustillos ◽  
Jesús Gómez
Keyword(s):  
Neutrophil Migration ◽  
Inflammatory Activity ◽  
Control Group ◽  
Percentage Decrease ◽  
Zebrafish Larvae ◽  
Tomato Extract ◽  
Inflammatory Drugs ◽  
Food Matrices ◽  
Anti Inflammatory ◽  
Inflammatory Effect

Este trabajo se fundamenta en la evaluación de la actividad antiinflamatoria de extractos de sofrito de tomate, así como de compuestos estándares de la dieta mediterránea, usando un modelo experimental optimizado basado en larvas de pez cebra. La migración de neutrófilos en larvas de pez cebra de 96 horas post fertilización se indujo mediante una lesión y se potenció añadiéndole lipopolisacárido, dicha migración se visualizó y cuantificó mediante análisis de imagen. El efecto antiinflamatorio del extracto de tomate y de los compuestos utilizados fue correlacionado porcentualmente por la disminución de la migración de los neutrófilos. Los resultados muestran que el extracto de tomate presentó una reducción en la migración de neutrófilos de 40 % respecto al grupo control. Por otra parte, el ácido clorogénico y la cianidina presentes en el sofrito de tomate utilizados como estándares presentaron una disminución de la migración de neutrófilos de un 66,7 % y 62,5 % respectivamente. Estos porcentajes son comparables a los resultados observados en ensayos con drogas antiinflamatorias como la indometacina y piroxicam. Los resultados muestran que el extracto de sofrito de tomate presenta posible actividad antinflamatoria demostrada por la reducción de la migración de neutrófilos, además el modelo se mostró sensible y válido para ser aplicado en matrices alimentarias complejas. The main of this study was to evaluate the anti-inflammatory activity of tomato sofrito extracts, as well as standard compounds present in the Mediterranean diet, using an optimized experimental model based on zebrafish larvae. Neutrophil migration in zebrafish larvae 96 hours post fertilization was induced by a cut in the caudal fin and enhanced by adding lipopolysaccharide and was visualized and quantified by image analysis. The anti-inflammatory effect of tomato extract and the compounds used was correlated by the percentage decrease in the migration of neutrophils. The results showed that, tomato extract showed a reduction in neutrophil migration of 40% compared to the control group. Moreover, chlorogenic acid and cyanidin present in tomato sofrito sauce showed a decrease in neutrophil migration of 66.7% and 62.5% respectively. These percentages are comparable to the results observed in trials with anti-inflammatory drugs such as indomethacin and piroxicam. The results show that tomato sofrito extract has possible anti-inflammatory activity demonstrated by the reduction of neutrophil migration, furthermore the model was sensitive and valid to be applied in complex food matrices.

Evaluation of anti-arthritic effect of Torilis leptophylla and its comparison with indomethacin

2020 ◽  
Vol 14 (1) ◽  
pp. 25-29
Author(s):  
Javaria Fatima ◽  
Bushra Shaheen ◽  
Saba Batool ◽  
Tooba Malik ◽  
Sheikh Maria Qammar ◽  
...  
Keyword(s):  
Rheumatoid Arthritis ◽  
Treatment Options ◽  
Joint Inflammation ◽  
Positive Control ◽  
Control Group ◽  
P Value ◽  
Standard Drug ◽  
Inflammatory Parameters ◽  
Group I ◽  
Anti Inflammatory

Background: Rheumatoid arthritis is an autoimmune debilitating disease involving multiple joints and organs. Many treatment options are available but all are associated with frequent side effects. Phytochemical screening of Torilis leptophylla has shown the presence of anti-inflammatory compounds like flavonoids, phenols and anthraquinones. This study was designed to evaluate its effect on joints inflammation (rheumatoid arthritis). Indomethacin is one of the oldest and most commonly used drugs for arthritis. It was used as a standard drug to compare with indomethacin. Methods: This experimental study was carried out in Pharmacology Department, University of Health Sciences, Lahore. Thirty six male albino Wistar rats were randomly divided into six groups (group I-control, group II-positive control, group III-10 mg indomethacin, group IV,V,VI--100mg, 200mg, 300mg Torilis leptophylla extract (TLE) administered (orally) respectively). Arthritis was induced by sub plantar injection of 0.1 ml Freund’s complete adjuvant (FCA) to all groups except the control group. Body weight (weekly) and ankle joint diameter (every 4th day) were measured. At day 29 blood was collected and all animals were killed by overdose of ether. Acid phosphatase and alkaline phosphatase levels were determined by chemistry analyzer (RX MONZA, RANDOX, Republic of Ireland). Statistical analysis was performed using SPSS 20. One way ANOVA and Post hoc -Tukey tests were applied. A p-value of ≤0.05 was considered statistically significant. Results: Treatment with indomethacin caused significant (p≤0.001) reduction in all the inflammatory parameters. Torilis leptophylla extract also significantly (p≤0.05) reduced all the inflammatory parameters. Anti-inflammatory effect was comparable to indomethacin. Conclusion: Torilis leptophylla has significant anti-arthritic activity as it modified the parameters of joint inflammation and destruction.

CB1 and CB2 contribute to antinociceptive and anti-inflammatory effects of electroacupuncture on experimental arthritis of the rat temporomandibular joint

2012 ◽  
Vol 90 (11) ◽  
pp. 1479-1489 ◽  
Author(s):  
Delane Viana Gondim ◽  
Joana Cláudia Bezerra Araújo ◽  
André Luiz Cunha Cavalcante ◽  
Alexandre Havt ◽  
Josiane da Siva Quetz ◽  
...  
Keyword(s):  
Gene Expression ◽  
Temporomandibular Joint ◽  
Receptor Gene ◽  
Antinociceptive Effect ◽  
Treated Group ◽  
Receptor Activation ◽  
Histopathological Analysis ◽  
Male Wistar Rats ◽  
Anti Inflammatory ◽  
Receptor Gene Expression

Electroacupuncture (EA) and cannabinoids have been reported to have anti-inflammatory and antinociceptive effects in animal models of arthritis. Male Wistar rats were injected with saline or zymosan (2 mg) into the temporomandibular joint (TMJ). EA (10 Hz, 30 min) was performed 2 h after or 1 h before zymosan administration. AM251 or AM630 (3 mg/kg, i.p.)were administered before EA treatment. Mechanical hypernociception was accessed after zymosan administration. Rats were sacrificed 6 h after zymosan administration and the joint was removed for histopathological analysis. The gene expression of CB1 and CB2 receptors was assessed after sacrifice of the TMJ arthritic animals. EA inhibited zymosan-induced hypernociception (p < 0.05). AM251 reversed significantly the antinociceptive effect of EA, suggesting that the CB1 receptor is involved in this effect. AM630 reversed the anti-inflammatory effect of EA. CB1 and CB2 receptor gene expression was upregulated 6 h after zymosan-induced arthritis in the EA-treated group. We observed downregulation of CB2 receptor gene expression in the EA group at the 24th hour compared with the 6th hour. Higher CB1 receptor gene expression was also found compared with the 6th hour. EA produced antinociceptive and anti-inflammatory effects, and these effects appeared to be mediated through CB1 and CB2 receptor activation.

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