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Guo Y, Xu Y, He M, Chen X, Xing L, Hu T, Zhang Y, Du M, Zhang D, Zhang Q, Li B. Acupotomy Improves Synovial Hypoxia, Synovitis and Angiogenesis in KOA Rabbits. J Pain Res 2023; 16:749-760. [PMID: 36919160 PMCID: PMC10008338 DOI: 10.2147/jpr.s396955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 02/21/2023] [Indexed: 03/16/2023] Open
Abstract
Purpose Knee osteoarthritis (KOA) is a chronic inflammatory disease highly associated with intra-articular hypertension, hypoxia and angiogenesis of synovial tissue. Our previous studies showed that acupotomy could treat KOA in a variety of ways, including reducing cartilage deterioration and enhancing biomechanical qualities. However, the mechanism of hypoxia and angiogenesis induced by acupotomy in KOA synovium remains unclear. This study looked for the benign intervention of acupotomy in synovial pathology. Methods The rabbits were divided into 3 groups, Normal group, KOA group, and KOA + Acupotomy (Apo) group, with 11 rabbits in each group. The KOA rabbit model was established by the modified Videman method with six weeks. The KOA + Apo group performed the intervention. The tendon insertion of vastus medialis, vastus lateralis, rectus femoris, biceps femoris, and anserine bursa were selected as treatment points in rabbits. Rabbits were treated once every 7 days for 3 weeks. We observed the intra-articular pressure and oxygen partial pressure (BOLD MRI). The synovial morphology was monitored by Hematoxylin-Eosin Staining (HE Staining). The expression of hypoxia-inducible transcription factor-1α (HIF-1α), vascular endothelial growth factor (VEGF), interleukin-1β (IL-1β) and tumour necrosis factor-α (TNF-α) was detected using Immunohistochemical (IHC), Western Blot and Enzyme-Linked Immunosorbent Assay (ELISA). Results Acupotomy reduced intra-articular hypertension and improved the synovial oxygen situation, synovial inflammatory and angiogenesis. HIF-1α, VEGF, IL-1β and TNF-α expression were downregulated by acupotomy. Conclusion Acupotomy may reduce inflammation and angiogenesis in KOA rabbit by reducing abnormally elevated intra-articular pressure and improving synovial oxygen environment. The above may provide a new theoretical foundation for acupotomy treatment of KOA.
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Affiliation(s)
- Yan Guo
- Department of Acupuncture and Moxibustion, Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing Key Laboratory of Acupuncture Neuromodulation, Beijing, People's Republic of China
| | - Yue Xu
- School of Acupuncture, Moxibustion and Tuina, Beijing University of Chinese Medicine, Beijing, People's Republic of China
| | - Meng He
- School of Acupuncture, Moxibustion and Tuina, Beijing University of Chinese Medicine, Beijing, People's Republic of China
| | - Xilin Chen
- School of Acupuncture, Moxibustion and Tuina, Beijing University of Chinese Medicine, Beijing, People's Republic of China
| | - Longfei Xing
- School of Acupuncture, Moxibustion and Tuina, Beijing University of Chinese Medicine, Beijing, People's Republic of China
| | - Tingyao Hu
- School of Acupuncture, Moxibustion and Tuina, Beijing University of Chinese Medicine, Beijing, People's Republic of China
| | - Yi Zhang
- School of Acupuncture, Moxibustion and Tuina, Beijing University of Chinese Medicine, Beijing, People's Republic of China
| | - Mei Du
- School of Acupuncture, Moxibustion and Tuina, Beijing University of Chinese Medicine, Beijing, People's Republic of China
| | - Dian Zhang
- School of Acupuncture, Moxibustion and Tuina, Beijing University of Chinese Medicine, Beijing, People's Republic of China
| | - Qian Zhang
- School of Acupuncture, Moxibustion and Tuina, Beijing University of Chinese Medicine, Beijing, People's Republic of China
| | - Bin Li
- Department of Acupuncture and Moxibustion, Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing Key Laboratory of Acupuncture Neuromodulation, Beijing, People's Republic of China
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Jo J, Xu G, Cao M, Marquardt A, Francis S, Gandikota G, Wang X. A Functional Study of Human Inflammatory Arthritis Using Photoacoustic Imaging. Sci Rep 2017; 7:15026. [PMID: 29101339 PMCID: PMC5670248 DOI: 10.1038/s41598-017-15147-5] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Accepted: 10/18/2017] [Indexed: 12/02/2022] Open
Abstract
By using our dual-modality system enabling simultaneous real-time ultrasound (US) and photoacoustic (PA) imaging of human peripheral joints, we explored the potential contribution of PA imaging modality to rheumatology clinic. By performing PA imaging at a single laser wavelength, the spatially distributed hemoglobin content reflecting the hyperemia in synovial tissue in metacarpophalangeal (MCP) joints of 16 patients were imaged, and compared to the results from 16 healthy controls. In addition, by performing PA imaging at two laser wavelengths, the spatially distributed hemoglobin oxygenation reflecting the hypoxia in inflammatory joints of 10 patients were imaged, and compared to the results from 10 healthy controls. The statistical analyses of the PA imaging results demonstrated significant differences (p < 0.001) in quantified hemoglobin content and oxygenation between the unequivocally arthritic joints and the normal joints. Increased hyperemia and increased hypoxia, two important physiological biomarkers of synovitis reflecting the increased metabolic demand and the relatively inadequate oxygen delivery in affected synovium, can both be objectively and non-invasively evaluated by PA imaging. The proposed dual-modality system has the potential of providing additional diagnostic information over the traditional US imaging approaches and introducing novel imaging biomarkers for diagnosis and treatment evaluation of inflammatory arthritis.
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Affiliation(s)
- Janggun Jo
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan, 48109, USA
| | - Guan Xu
- Department of Radiology, University of Michigan Medical School, Ann Arbor, Michigan, 48109, USA
| | - Meng Cao
- Department of Electronic Science and Engineering, Nanjing University, Nanjing, 210093, China
| | - April Marquardt
- Division of Rheumatology, Department of Internal Medicine, University of Michigan School of Medicine, Ann Arbor, Michigan, 48109, USA
| | - Sheeja Francis
- Division of Rheumatology, Department of Internal Medicine, University of Michigan School of Medicine, Ann Arbor, Michigan, 48109, USA
| | - Girish Gandikota
- Department of Radiology, University of Michigan Medical School, Ann Arbor, Michigan, 48109, USA.
| | - Xueding Wang
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan, 48109, USA. .,Department of Radiology, University of Michigan Medical School, Ann Arbor, Michigan, 48109, USA.
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Efficacy of double inversion recovery magnetic resonance imaging for the evaluation of the synovium in the femoro-patellar joint without contrast enhancement. Eur Radiol 2017; 28:459-467. [PMID: 28828623 DOI: 10.1007/s00330-017-5017-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Revised: 07/25/2017] [Accepted: 08/02/2017] [Indexed: 10/19/2022]
Abstract
OBJECTIVE To investigate the efficacy of double inversion recovery (DIR) sequence for evaluating the synovium of the femoro-patellar joint without contrast enhancement (CE). METHODS Two radiologists independently evaluated the axial DIR and CE T1-weighted fat-saturated (CET1FS) images of 33 knees for agreement; the visualisation and distribution of the synovium were evaluated using a four-point visual scaling system at each of the five levels of the femoro-patellar joint and the location of the thickest synovium. The maximal synovial thickness at each sequence was measured by consensus. RESULTS The interobserver agreement was good (κ = 0.736) for the four-point scale, and was excellent for the location of the thickest synovium on DIR and CET1FS (κ = 0.955 and 0.954). The intersequential agreement for the area with the thickest synovium was also excellent (κ = 0.845 and κ = 0.828). The synovial thickness on each sequence showed excellent correlation (r = 0.872). CONCLUSION The DIR showed as good a correlation as CET1FS for the evaluation of the synovium at the femoro-patellar joint. DIR may be a useful MR technique for evaluating the synovium without CE. KEY POINTS • DIR can be useful for evaluating the synovium of the femoro-patellar joint. • Interobserver and intersequential agreements between DIR and CET1FS were good. • Mean thickness of the synovium was significantly different between two sequences.
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Dynamic contrast enhanced MR imaging for evaluation of angiogenesis of hepatocellular nodules in liver cirrhosis in N-nitrosodiethylamine induced rat model. Eur Radiol 2016; 27:2086-2094. [PMID: 27488851 DOI: 10.1007/s00330-016-4505-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Revised: 04/12/2016] [Accepted: 07/06/2016] [Indexed: 02/07/2023]
Abstract
PURPOSE To investigate whether dynamic contrast -enhanced MRI (DCE-MRI) can distinguish the type of liver nodules in a rat model with N-nitrosodiethylamine- induced cirrhosis. METHODS Liver nodules in cirrhosis were induced in 60 male Wistar rats via 0.01 % N-nitrosodiethylamine in the drinking water for 35-100 days. The nodules were divided into three groups: regenerative nodule (RN), dysplastic nodule (DN), and hepatocellular carcinoma (HCC). DCE-MRI was performed, and parameters including transfer constant (Ktrans), rate constant (Kep), extravascular extracellular space volume fraction (Ve), and initial area under the contrast concentration versus time curve (iAUC) were measured and compared. RESULTS The highest Ktrans and iAUC values were seen in HCC, followed by DN and RN (all P < 0.05). The area under the receiver operating characteristic curve (AUROC) for DN and HCC were 0.738 and 0.728 for Ktrans and iAUC, respectively. The AUROC for HCC were 0.850 and 0.840 for Ktrans and iAUC, respectively. Ordinal logistic regression analysis showed that Ktrans had a high goodness of fit (0.970, 95 % confidence interval, 13.751-24.958). CONCLUSION DCE-MRI is a promising method to differentiate of liver nodules. Elevated Ktrans suggested that the nodules may be transformed into HCC. KEY POINTS • DCE-MRI is promising for differentiating among RN, DN, and HCC • K trans and iAUC positively correlated with malignancy degree of liver nodules • Elevated K trans suggests that the nodules may be transformed into HCC.
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