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Silsby M, Feldman EL, Dortch RD, Roth A, Haroutounian S, Rajabally YA, Vucic S, Shy ME, Oaklander AL, Simon NG. Advances in diagnosis and management of distal sensory polyneuropathies. J Neurol Neurosurg Psychiatry 2023; 94:1025-1039. [PMID: 36997315 PMCID: PMC10544692 DOI: 10.1136/jnnp-2021-328489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Accepted: 02/23/2023] [Indexed: 04/01/2023]
Abstract
Distal sensory polyneuropathy (DSP) is characterised by length-dependent, sensory-predominant symptoms and signs, including potentially disabling symmetric chronic pain, tingling and poor balance. Some patients also have or develop dysautonomia or motor involvement depending on whether large myelinated or small fibres are predominantly affected. Although highly prevalent, diagnosis and management can be challenging. While classic diabetes and toxic causes are well-recognised, there are increasingly diverse associations, including with dysimmune, rheumatological and neurodegenerative conditions. Approximately half of cases are initially considered idiopathic despite thorough evaluation, but often, the causes emerge later as new symptoms develop or testing advances, for instance with genetic approaches. Improving and standardising DSP metrics, as already accomplished for motor neuropathies, would permit in-clinic longitudinal tracking of natural history and treatment responses. Standardising phenotyping could advance research and facilitate trials of potential therapies, which lag so far. This review updates on recent advances and summarises current evidence for specific treatments.
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Affiliation(s)
- Matthew Silsby
- Neurology, Westmead Hospital, Westmead, New South Wales, Australia
- Brain and Nerve Research Centre, Sydney Medical School, The University of Sydney, New South Wales, Australia
| | - Eva L Feldman
- Department of Neurology, University of Michigan, Ann Arbor, Michigan, USA
| | - Richard D Dortch
- Division of Neuroimaging Research, Barrow Neurological Institute, Phoenix, Arizona, USA
- Department of Radiology and Radiological Sciences, Vanderbilt University Institute of Imaging Science, Nashville, Tennessee, USA
- Department of Biomedical Engineering, Vanderbilt University Institute of Imaging Science, Nashville, Tennessee, USA
| | - Alison Roth
- Division of Neuroimaging Research, Barrow Neurological Institute, Phoenix, Arizona, USA
| | - Simon Haroutounian
- Department of Anesthesiology, Washington University School of Medicine in Saint Louis, St Louis, Missouri, USA
| | - Yusuf A Rajabally
- Inflammatory Neuropathy Clinic, Department of Neurology, University Hospitals Birmingham, Aston Medical School, Aston University, Birmingham, UK
| | - Steve Vucic
- Brain and Nerve Research Centre, Sydney Medical School, The University of Sydney, New South Wales, Australia
| | - Michael E Shy
- Department of Neurology, Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA
| | - Anne Louise Oaklander
- Nerve Unit, Departments of Neurology and Pathology (Neuropathology), Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Neil G Simon
- Northern Beaches Clinical School, Macquarie University, Frenchs Forest, New South Wales, Australia
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Kaymaz S, Yiğit M, Ufuk F, Sarılar B, Karasu U, Çobankara V, Sabir N, Alkan H. The evaluation of tibial nerve using shear-wave elastography and ultrasound in patients with systemic sclerosis: A cross-sectional study. Arch Rheumatol 2023; 38:556-565. [PMID: 38125066 PMCID: PMC10728736 DOI: 10.46497/archrheumatol.2023.9835] [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: 07/24/2022] [Accepted: 02/23/2023] [Indexed: 12/23/2023] Open
Abstract
Objectives The study aimed to evaluate stiffness and the cross-sectional area (CSA) of the tibial nerve (TN) using shear wave elastography (SWE) and ultrasound (US) and investigate the relationship of these with disease activity, quality of life, and severity of neuropathic pain in patients with systemic sclerosis (SSc). Patients and methods This cross-sectional study included 28 SSc patients (1 male, 27 females; mean age: 50±11 years; range, 28 to 67 years) and 22 age- and sex-matched healthy controls (4 males, 18 females; mean age: 48±6 years; range, 37 to 66 years) between March and April 2022. US and SWE were performed on the TN, and CSA and nerve stiffness were measured. The TN was examined by a radiologist, 4 cm proximal to the medial malleolus. A few days later, an evaluation was performed in the second session by a second observer to investigate inter-and intraobserver agreement. Interobserver agreement was evaluated using the intraclass correlation coefficient (ICC). The Scleroderma Health Assessment Questionnaire, European League Against Rheumatism European Scleroderma Trial and Research (EUSTAR) group activity index, and Douleur-Neuropathique 4 scores of the patients were evaluated. Correlations between the questionnaires and measurements of nerve stiffness and CSA were assessed. Results Patients with SSc had significantly higher stiffness and CSA values of the right TN compared to healthy controls (p<0.001 and p=0.015, respectively). The nerve stiffness values of the right TN were positively correlated with the EUSTAR activity index (p=0.004, r=0.552). The CSA of the left TN was larger in patients with SSc (21.3±4.9 mm2 ) than in controls (12.8±3.4 mm2 ), and the nerve elasticity was positively correlated with the EUSTAR activity index (p=0.001, r=0.618). The interobserver agreement was moderate to good for measuring stiffness and CSA of the TN (ICC were 0.660 and 0.818, respectively). There was a good to excellent intraobserver agreement for measuring stiffness and CSA of TN (ICC were 0.843 and 0.940, respectively). Conclusion The increased disease activity in patients with SSc is associated with TN involvement, which can be demonstrated by US and SWE.
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Affiliation(s)
- Serdar Kaymaz
- Department of Internal Medicine, Division of Rheumatology, Pamukkale University Faculty of Medicine, Denizli, Türkiye
| | - Murat Yiğit
- Department of Internal Medicine, Division of Rheumatology, Pamukkale University Faculty of Medicine, Denizli, Türkiye
| | - Furkan Ufuk
- Department of Radiology, Pamukkale University Faculty of Medicine, Denizli, Türkiye
| | - Burak Sarılar
- Department of Radiology, Pamukkale University Faculty of Medicine, Denizli, Türkiye
| | - Uğur Karasu
- Department of Internal Medicine, Division of Rheumatology, Pamukkale University Faculty of Medicine, Denizli, Türkiye
| | - Veli Çobankara
- Department of Internal Medicine, Division of Rheumatology, Pamukkale University Faculty of Medicine, Denizli, Türkiye
| | - Nuran Sabir
- Department of Radiology, Pamukkale University Faculty of Medicine, Denizli, Türkiye
| | - Hakan Alkan
- Department of Physical Medicine and Rehabilitation, Pamukkale University Faculty of Medicine, Denizli, Türkiye
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Senarai T, Suwannakhan A, Pratipanawatr T, Yammine K, Yurasakpong L, Sathapornsermsuk T, Janta S, Kittiboonya A. Normative Reference Values of the Tibial Nerve in Healthy Individuals Using Ultrasonography: A Systematic Review and Meta-Analysis. J Clin Med 2023; 12:6186. [PMID: 37834829 PMCID: PMC10573196 DOI: 10.3390/jcm12196186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2023] [Revised: 09/23/2023] [Accepted: 09/23/2023] [Indexed: 10/15/2023] Open
Abstract
BACKGROUND High-resolution ultrasound of the tibial nerve has been used for screening of several neurologic disorders, but normative reference values of tibial nerve cross-sectional areas (CSA) have not been well established. Thus, the present meta-analysis was performed to generate normative estimates of tibial nerve CSA at various sites of the lower limb based on ultrasonography. METHODS Google Scholar, Scopus and PubMed were searched for potential studies. Studies were required to report tibial nerve CSA in healthy individuals to be included. A random-effect meta-analysis was performed to calculate tibial nerve CSA values. Subgroup and statistical analyses were performed to study covariates. RESULTS Forty-eight eligible articles consisting of 2695 limbs were included. The average tibial nerve CSA was found to be 10.9 mm2 at the ankle (95% CI: 9.9-11.8) and should not exceed 11.8 mm2 in healthy adults. At the popliteal fossa, the overall CSA was 21.7 mm2 (95% CI: 17.5-25.8) in healthy adults. At both sites, the average tibial nerve CSA was significantly larger in adults than in children, and the differences by geographical region were not statistically significant. At the ankle, tibial nerve CSA increased with age and body mass index, while at the popliteal fossa it increased with age and weight. CONCLUSIONS our findings indicate that the tibial nerve varied not only along its course but also among sub-variables. Establishing normal references values of tibial nerve CSA is helpful to differentiate healthy from diseased tibial nerves such as in diabetic peripheral neuropathy or tarsal tunnel syndrome.
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Affiliation(s)
- Thanyaporn Senarai
- Microscopy Unit, Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand;
| | - Athikhun Suwannakhan
- Department of Anatomy, Faculty of Science, Mahidol University, Bangkok 10400, Thailand;
- In Silico and Clinical Anatomy Research Group (iSCAN), Bangkok 10400, Thailand
| | - Thongchai Pratipanawatr
- Department of Internal Medicine, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand;
| | - Kaissar Yammine
- Department of Orthopedic and Trauma Surgery, Lebanese American University Medical Center—Rizk Hospital, Beirut 11-3288, Lebanon;
- The Center for Evidence-Based Anatomy, Sports and Orthopedic Research, Lebanese American University, Byblos 1102-2801, Lebanon
| | - Laphatrada Yurasakpong
- Department of Anatomy, Faculty of Science, Mahidol University, Bangkok 10400, Thailand;
- In Silico and Clinical Anatomy Research Group (iSCAN), Bangkok 10400, Thailand
| | | | - Sirorat Janta
- Anatomy Unit, Department of Medical Science, Faculty of Science, Rangsit University, Pathumthani 12000, Thailand;
| | - Achiraya Kittiboonya
- Centre for Anatomy and Human Identification (CAHID), School of Science and Engineering, University of Dundee, Dundee DD1 4HN, UK;
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Eby SF, Teramoto M, Lider J, Lash M, Caragea M, Cushman DM. Sonographic peripheral nerve cross-sectional area in adults, excluding median and ulnar nerves: A systematic review and meta-analysis. Muscle Nerve 2023; 68:20-28. [PMID: 36583383 DOI: 10.1002/mus.27783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 12/20/2022] [Accepted: 12/26/2022] [Indexed: 12/31/2022]
Abstract
INTRODUCTION/AIMS Although electromyography remains the "gold standard" for assessing and diagnosing peripheral nerve disorders, ultrasound has emerged as a useful adjunct, providing valuable anatomic information. The objective of this study was to conduct a systematic review and meta-analysis evaluating the normative sonographic values for adult peripheral nerve cross-sectional area (CSA). METHODS Medline and Cochrane Library databases were systematically searched for healthy adult peripheral nerve CSA, excluding the median and ulnar nerves. Data were meta-analyzed, using a random-effects model, to calculate the mean nerve CSA and its 95% confidence interval (CI) for each nerve at a specific anatomical location (= group). RESULTS Thirty groups were identified and meta-analyzed, which comprised 16 from the upper extremity and 15 from the lower extremity. The tibial nerve (n = 2916 nerves) was reported most commonly, followed by the common fibular nerve (n = 2580 nerves) and the radial nerve (n = 2326 nerves). Means and 95% confidence interval (CIs) of nerve CSA for the largest number of combined nerves were: radial nerve assessed at the spiral groove (n = 1810; mean, 5.14 mm2 ; 95% CI, 4.33 to 5.96); common fibular nerve assessed at the fibular head (n = 1460; mean, 10.18 mm2 ; 95% CI, 8.91 to 11.45); and common fibular nerve assessed at the popliteal fossa (n = 1120; mean, 12.90 mm2 ; 95% CI, 9.12 to 16.68). Publication bias was suspected, but its influence on the results was minimal. DISCUSSION Two hundred thirty mean CSAs from 15 857 adult nerves are included in the meta-analysis. These are further categorized into 30 groups, based on anatomical location, providing a comprehensive reference for the clinician and researcher investigating adult peripheral nerve anatomy.
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Affiliation(s)
- Sarah F Eby
- Department of Physical Medicine and Rehabilitation, Spaulding Rehabilitation Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Masaru Teramoto
- Department of Physical Medicine and Rehabilitation, University of Utah School of Medicine, Salt Lake City, Utah, USA
| | - Joshua Lider
- Department of Physical Medicine and Rehabilitation, University of Utah School of Medicine, Salt Lake City, Utah, USA
| | - Madison Lash
- University of Utah School of Medicine, Salt Lake City, Utah, USA
| | - Marc Caragea
- Department of Physical Medicine and Rehabilitation, University of Utah School of Medicine, Salt Lake City, Utah, USA
| | - Daniel M Cushman
- Department of Physical Medicine and Rehabilitation, University of Utah School of Medicine, Salt Lake City, Utah, USA
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Shang S, Yan W, Guo Y, Guo H, Chen R, Cong S, Huang C. The normal value and influencing factors of shear wave elastography in healthy tibial nerves: A cross-sectional study. Health Sci Rep 2023; 6:e1412. [PMID: 37441130 PMCID: PMC10334271 DOI: 10.1002/hsr2.1412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Revised: 06/22/2023] [Accepted: 06/28/2023] [Indexed: 07/15/2023] Open
Abstract
Background and Aims Shear wave elastography is a potential method for evaluating peripheral neuropathy, but lacking reference values. The aim of this study was to measure tibial nerve stiffness in healthy individuals using shear wave elastography and to investigate the influencing factors of tibial nerve stiffness. Methods Shear wave elastography of bilateral tibial nerves was performed in 50 healthy individuals 4 cm proximal to the medial malleolus. Mean shear modulus data of tibial nerves were obtained and recorded. Intra- and interobserver agreement were assessed using intraclass correlation coefficients. Differences among groups (grouped by laterality, sex, age, and body mass index) were analyzed with independent-samples t-tests and paired t-tests. Effect size (Cohen's d) was also calculated. Results The intra-and interobserver agreement were moderate (intraclass correlation coefficient, 0.700-0.747) for all participants, and was poor (intraclass correlation coefficient, 0.265-0.088) in very thin people (body mass index <18.5 kg/m2). The shear wave elastography measurements of the tibial nerve did not show a significant difference between legs, sexes, or different age groups. Higher values of tibial nerve stiffness were found in thinner participants. Conclusions Shear wave elastography is a method to evaluate the stiffness of peripheral nerves. The measurement results were likely influenced by body mass index of the participants.
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Affiliation(s)
- Shiyao Shang
- Department of Ultrasound, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences)Southern Medical UniversityGuangzhouPeople's Republic of China
| | - Wenxiao Yan
- Department of Ultrasound, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences)Southern Medical UniversityGuangzhouPeople's Republic of China
| | - Yuping Guo
- Department of Ultrasound, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences)Southern Medical UniversityGuangzhouPeople's Republic of China
| | - Hantao Guo
- Department of Ultrasound, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences)Southern Medical UniversityGuangzhouPeople's Republic of China
| | - Rumin Chen
- Department of Ultrasound, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences)Southern Medical UniversityGuangzhouPeople's Republic of China
| | - Shuzhen Cong
- Department of Ultrasound, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences)Southern Medical UniversityGuangzhouPeople's Republic of China
| | - Chunwang Huang
- Department of Ultrasound, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences)Southern Medical UniversityGuangzhouPeople's Republic of China
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Rossetto G, Lopomo NF, Shaikh SZ. Longitudinal Movements and Stiffness of Lower Extremity Nerves Measured by Ultrasonography and Ultrasound Elastography in Symptomatic and Asymptomatic Populations: A Systematic Review With Meta-analysis. ULTRASOUND IN MEDICINE & BIOLOGY 2023:S0301-5629(23)00140-0. [PMID: 37331920 DOI: 10.1016/j.ultrasmedbio.2023.04.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 04/07/2023] [Accepted: 04/24/2023] [Indexed: 06/20/2023]
Abstract
This study was aimed at analyzing the effectiveness of ultrasonography (US) and ultrasound elastography (UE) in evaluating longitudinal sliding and stiffness of nerves. In line with the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) statement, we analyzed 1112 publications (range: 2010-2021) extracted from MEDLINE, Scopus and Web of Science focusing on specific outcomes, including shear wave velocity (m/s), shear modulus (kPa), strain ratio (SR) and excursion (mm). Thirty-three papers were included and evaluated for overall quality and risk of bias. From the analysis of data concerning 1435 participants, mean shear wave velocity (SWV) in the sciatic nerve was 6.70 ± 1.26 m/s in controls and 7.51 ± 1.73 m/s in participants presenting with leg pain; in the tibial nerve, mean SWV was 3.83 ± 0.33 m/s in controls and 3.42 ± 3.53 m/s in participants presenting with diabetic peripheral neuropathy (DPN). The mean shear modulus (SM) was 20.9 ± 9.33 kPa for sciatic nerve, whereas it was an average of 23.3 ± 7.20 kPa for the tibial nerve. Considering 146 subjects (78 experimental, 68 controls) no significant difference was observed in SWV when comparing participants with DPN with controls (standard mean difference [SMD]: 1.26, 95% confidence interval [CI]: 0.54, 1.97), whereas a significant difference was observed in the SM (SMD: 1.78, 95% CI: 1.32, 2.25); furthermore, we found significant differences between left and right extremity nerves (SMD:1.14. 95% CI: 0.45, 1.83) among 458 participants (270 with DPN and 188 controls). No descriptive statistics are available for excursion because of the variability in participants and limb positions, whereas SR is considered only a semiquantitative outcome and therefore not comparable among different studies. Despite the presence of some limitations in study designs and methodological biases, on the basis of our findings, we can conclude that US and UE are effective methods in assessing longitudinal sliding and stiffness of lower extremity nerves in both symptomatic and asymptomatic subjects.
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Affiliation(s)
- Gianluca Rossetto
- Department of Information Engineering, University of Brescia, Brescia, Italy
| | | | - Summaiva Zareen Shaikh
- Department of Neuro-physiotherapy, SIA College of Health Sciences, College of Physiotherapy, Thane, India.
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Jerban S, Barrère V, Andre M, Chang EY, Shah SB. Quantitative Ultrasound Techniques Used for Peripheral Nerve Assessment. Diagnostics (Basel) 2023; 13:956. [PMID: 36900101 PMCID: PMC10000911 DOI: 10.3390/diagnostics13050956] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 02/14/2023] [Accepted: 02/17/2023] [Indexed: 03/06/2023] Open
Abstract
AIM This review article describes quantitative ultrasound (QUS) techniques and summarizes their strengths and limitations when applied to peripheral nerves. METHODS A systematic review was conducted on publications after 1990 in Google Scholar, Scopus, and PubMed databases. The search terms "peripheral nerve", "quantitative ultrasound", and "elastography ultrasound" were used to identify studies related to this investigation. RESULTS Based on this literature review, QUS investigations performed on peripheral nerves can be categorized into three main groups: (1) B-mode echogenicity measurements, which are affected by a variety of post-processing algorithms applied during image formation and in subsequent B-mode images; (2) ultrasound (US) elastography, which examines tissue stiffness or elasticity through modalities such as strain ultrasonography or shear wave elastography (SWE). With strain ultrasonography, induced tissue strain, caused by internal or external compression stimuli that distort the tissue, is measured by tracking detectable speckles in the B-mode images. In SWE, the propagation speed of shear waves, generated by externally applied mechanical vibrations or internal US "push pulse" stimuli, is measured to estimate tissue elasticity; (3) the characterization of raw backscattered ultrasound radiofrequency (RF) signals, which provide fundamental ultrasonic tissue parameters, such as the acoustic attenuation and backscattered coefficients, that reflect tissue composition and microstructural properties. CONCLUSIONS QUS techniques allow the objective evaluation of peripheral nerves and reduce operator- or system-associated biases that can influence qualitative B-mode imaging. The application of QUS techniques to peripheral nerves, including their strengths and limitations, were described and discussed in this review to enhance clinical translation.
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Affiliation(s)
- Saeed Jerban
- Department of Radiology, University of California, San Diego, CA 92093, USA
- Research Service, Veterans Affairs San Diego Healthcare System, San Diego, CA 92161, USA
- Department of Orthopaedic Surgery, University of California, San Diego, CA 92093, USA
| | - Victor Barrère
- Research Service, Veterans Affairs San Diego Healthcare System, San Diego, CA 92161, USA
- Department of Orthopaedic Surgery, University of California, San Diego, CA 92093, USA
| | - Michael Andre
- Department of Radiology, University of California, San Diego, CA 92093, USA
- Research Service, Veterans Affairs San Diego Healthcare System, San Diego, CA 92161, USA
| | - Eric Y. Chang
- Department of Radiology, University of California, San Diego, CA 92093, USA
- Research Service, Veterans Affairs San Diego Healthcare System, San Diego, CA 92161, USA
| | - Sameer B. Shah
- Research Service, Veterans Affairs San Diego Healthcare System, San Diego, CA 92161, USA
- Department of Orthopaedic Surgery, University of California, San Diego, CA 92093, USA
- Department of Bioengineering, University of California, San Diego, CA 92093, USA
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Ibrahim HR. Diagnostic value of shear wave ultrasound elastography of tibial nerve in patients with diabetic peripheral neuropathy. THE EGYPTIAN JOURNAL OF RADIOLOGY AND NUCLEAR MEDICINE 2022. [DOI: 10.1186/s43055-022-00779-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Diabetic peripheral neuropathy (DPN) is a major complication of Diabetes mellitus. So this study aimed at investigation of the value of tibial nerve stiffness measured by shear wave ultrasound elastography (SWE) for detection of DPN. This case–control study involved 50 patients with DPN, 50 patients with diabetes mellitus but without DPN, and 50 healthy controls. Clinical examination, nerve conduction study of both tibial nerves, high resolution ultrasound and SWE to assess cross sectional area "CSA" of tibial nerves, and tibial nerves mean stiffness, respectively. ROC curve analysis was also performed.
Results
Mean tibial nerve stiffness by SWE was higher in patients with DPN compared to other groups (P value < 0.001). The CSA of the tibial nerve in the DPN group was significantly larger than that in the other groups (P value = 0.01). The cutoff value by ROC curve analysis for tibial nerve stiffness to differentiate patients with DPN and control group was 70.6 kPa (P value < 0.001, 95.4% sensitivity, 94.7% specificity, AUC = 0.963), while 86.5 kPa was the optimal cutoff point to differentiate patients with DPN and other groups with a 94.6% sensitivity, 93.8% specificity, AUC of 0.975 and P value < 0.001. Higher diagnostic accuracy was found when combination of SWE and high resolution US (high resolution US + shear wave; 0.987, P value < 0.001).
Conclusions
Tibial nerve stiffness was increased in patients with DPN. SWE can be used as an effective complementary method in diagnosis of DPN with high sensitivity and accuracy.
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Elfattah Hassan Gadalla AA, Nada HR, Kaddah RO, Khalil AS, Saleh MM. Quantitative shear wave elastography assessment of tibial nerve in diagnosis of diabetic peripheral neuropathy. THE EGYPTIAN JOURNAL OF RADIOLOGY AND NUCLEAR MEDICINE 2022. [DOI: 10.1186/s43055-022-00803-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Diabetic peripheral neuropathy (DPN) is one of the most common complications of diabetes mellitus. Diagnosis of DPN is very important in the prognosis of disease and treatment as early treatment of DPN decreases both short-term and long-term morbidities. SWE elastography is a noninvasive and reproducible method for the precise evaluation of nerve stiffness.
Results
Tibial nerve stiffness is notably high at SWE in diabetic patients with DPN (mean shear wave elastography value of RT tibial SWE 75.3 ± 15.1 kPa) compared to patients without DPN (mean shear wave elastography value of RT tibial SWE 37.8 ± 11.6 kPa) and nerve stiffness in healthy control subjects (mean shear wave elastography value of RT tibial SWE 24.9 ± 6.3 kPa). There is a significant increase in the cross-sectional area (CSA) among diabetic patients with DPN (mean cross-sectional area of the right tibial nerve of 17 ± 1.9 mm2) and without DPN (mean cross-sectional area of the right tibial nerve of 14.5 ± 3.8 mm2) in comparison with control subjects (mean cross-sectional area of the right tibial nerve of 13.2 ± 3.1 mm2) in the right side. Borderline significance of the CSA parameters of the tibial nerve study on the left side in different groups. The cutoff point to determine DPN among diabetic patients in the right lower limb is more than 63.8 kPa. With 89% sensitivity and 100% specificity in the detection of DPN on the right side, the SWE has 100% PPV and 95.5% NPV in the detection of DPN on the right side.
Conclusion
SWE is an effective assistant method in the diagnosis of DPN and is useful when a suspected neuropathy is not detectable by electrophysiology.
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Senarai T, Pratipanawatr T, Yurasakpong L, Kruepunga N, Limwachiranon J, Phanthong P, Meemon K, Yammine K, Suwannakhan A. Cross-Sectional Area of the Tibial Nerve in Diabetic Peripheral Neuropathy Patients: A Systematic Review and Meta-Analysis of Ultrasonography Studies. MEDICINA (KAUNAS, LITHUANIA) 2022; 58:1696. [PMID: 36556898 PMCID: PMC9787041 DOI: 10.3390/medicina58121696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Revised: 11/09/2022] [Accepted: 11/18/2022] [Indexed: 11/23/2022]
Abstract
Background: There is a link between diabetic peripheral neuropathy (DPN) progression and the increase in the cross-sectional area (CSA) of the tibial nerve at the ankle. Nevertheless, no prior meta-analysis has been conducted to evaluate its usefulness for the diagnosis of DPN. Methods: We searched Google Scholar, Scopus, and PubMed for potential studies. Studies had to report tibial nerve CSA at the ankle and diabetes status (DM, DPN, or healthy) to be included. A random-effect meta-analysis was applied to calculate pooled tibial nerve CSA and mean differences across the groups. Subgroup and correlational analyses were conducted to study the potential covariates. Results: The analysis of 3295 subjects revealed that tibial nerve CSA was 13.39 mm2 (CI: 10.94−15.85) in DM patients and 15.12 mm2 (CI: 11.76−18.48) in DPN patients. The CSA was 1.93 mm2 (CI: 0.92−2.95, I2 = 98.69%, p < 0.01) larger than DPN-free diabetic patients. The diagnostic criteria of DPN and age were also identified as potential moderators of tibial nerve CSA. Conclusions: Although tibial nerve CSA at the ankle was significantly larger in the DPN patients, its clinical usefulness is limited by the overlap between groups and the inconsistency in the criteria used to diagnose DPN.
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Affiliation(s)
- Thanyaporn Senarai
- Electron Microscopy Unit, Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Thongchai Pratipanawatr
- Department of Internal Medicine, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Laphatrada Yurasakpong
- Princess Srisavangavadhana College of Medicine, Chulabhorn Royal Academy, Bangkok 10210, Thailand
| | - Nutmethee Kruepunga
- Department of Anatomy, Faculty of Science, Mahidol University, Bangkok 10400, Thailand
- In Silico and Clinical Anatomy Research Group (iSCAN), Bangkok 10400, Thailand
| | - Jarukitt Limwachiranon
- Department of Microbiology, School of Medicine, Zhejiang University, Hangzhou 310058, China
- The Children’s Hospital, Zhejiang University School of Medicine National Clinical Research Center for Child Health, Hangzhou 310058, China
| | - Phetcharat Phanthong
- Department of Anatomy, Faculty of Science, Mahidol University, Bangkok 10400, Thailand
| | - Krai Meemon
- Department of Anatomy, Faculty of Science, Mahidol University, Bangkok 10400, Thailand
| | - Kaissar Yammine
- Department of Orthopedic and Trauma Surgery, Lebanese American University Medical Center—Rizk Hospital, Beirut 11-3288, Lebanon
- The Center for Evidence-Based Anatomy, Sports and Orthopedic Research, Lebanese American University, Byblos 11-3288, Lebanon
| | - Athikhun Suwannakhan
- Department of Anatomy, Faculty of Science, Mahidol University, Bangkok 10400, Thailand
- In Silico and Clinical Anatomy Research Group (iSCAN), Bangkok 10400, Thailand
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11
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Zhao P, Ding C, Fu X, Zhang Y, Gu J, Hu J, Wang C, Yang M, Sheng Y, Zhang Y, Chen X, Mao P, Liu CF. Ultrasound exploration of muscle characteristic changes and diabetic peripheral neuropathy in diabetic patients. JOURNAL OF CLINICAL ULTRASOUND : JCU 2022; 50:1403-1411. [PMID: 36218110 DOI: 10.1002/jcu.23365] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 09/13/2022] [Accepted: 09/18/2022] [Indexed: 06/16/2023]
Abstract
PURPOSE Using brightness mode ultrasound combined with shear wave elastography, this study aims to detect structural and functional changes of the medial head of gastrocnemius (MG) in type 2 diabetes mellitus (T2DM) patients with or without diabetic peripheral neuropathy (DPN). METHODS 149 T2DM patients (DPN group and non-DPN group) and 60 healthy volunteers (control group) were enrolled. We measured the absolute difference of fascicle length (FL), pennation angle (PA), and shear wave velocity (SWV) of both MG in neutral position and maximal ankle joint's plantar flexion and calculated ΔFL, ΔPA, and ΔSWV. These three parameters, along with muscle thickness (MT), were compared among the three groups. RESULTS In the DPN group, the MG's MT, ΔPA, and ΔSWV were significantly lower than in the non-DPN group (p < 0.01); these parameters achieved the highest scores in the control group (p < 0.01). The area under the receiver operating characteristic curve of the combination of ΔSWV and ΔFL was the largest for predicting inpatients with or without DPN. CONCLUSIONS Decreased muscle mass (MT) and muscle contractibility (ΔFL and ΔSWV) were detected in patients with T2DM, with or without DPN. ΔSWV and ΔFL of the MG showed high-diagnostic accuracy for DPN warning signs.
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Affiliation(s)
- Ping Zhao
- Department of Ultrasound, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Changwei Ding
- Department of Ultrasound, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Xinxu Fu
- Department of Ultrasound, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Yingchun Zhang
- Department of Ultrasound, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Jiarui Gu
- Department of Endocrinology, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Ji Hu
- Department of Endocrinology, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Caishan Wang
- Department of Ultrasound, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Min Yang
- Department of Ultrasound, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Yujing Sheng
- Department of Ultrasound, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Ying Zhang
- Department of Ultrasound, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Xiaofang Chen
- Department of Ultrasound, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Pan Mao
- Department of Ultrasound, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Chun-Feng Liu
- Department of Neurology, The Second Affiliated Hospital of Soochow University, Suzhou, China
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12
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Chen Y, Duan H, Huang L, Jiang Z, Huang H. Supersonic shear wave imaging of the tibial nerve for diagnosis of diabetic peripheral neuropathy: A meta-analysis. Front Endocrinol (Lausanne) 2022; 13:934749. [PMID: 36120458 PMCID: PMC9478111 DOI: 10.3389/fendo.2022.934749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Accepted: 08/01/2022] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Diabetic peripheral neuropathy (DPN) is the most common diabetes-associated complication and imposes a significant burden to healthcare systems. Thus, early diagnosis of DPN is extremely critical for management and outcome of diabetic patients. Supersonic Shear Wave Imaging (SSI) enables the noninvasive measurement of nerve stiffness. However, previous studies on SSI in the diagnosis of DPN were limited in sample sizes and reported various results. In this meta-analysis, we aimed to obtain comprehensive evidence on the value of tibial nerve stiffness measurement by SSI in the diagnosis of DPN. METHODS A comprehensive literature search in English and Chinese electronic database was conducted for studies (published until January 25, 2022) that investigated the diagnostic performance of tibial nerve stiffness measurement by SSI for detecting DPN. Summary receiver operating characteristics (SROC) modelling was constructed to conduct the meta-analysis of diagnostic accuracy of SSI for detecting DPN. RESULTS Finally, a total of 12 eligible studies with 1325 subjects were included for evaluation, and a meta-analysis was conducted to evaluate the diagnostic performance of tibial nerve stiffness measurement by SSI for detecting DPN. For tibial nerve stiffness measurement by SSI, the summary sensitivity and specificity for the diagnosis of DPN were 80% (95% confidence interval [CI]: 73%-86%) and 86% (95% CI: 82%-89%), respectively. The summary area under the ROC curve (AUROC) value of the SROC was 0.90 (95% CI: 0.87-0.92), for diagnosing DPN. A subgroup analysis of 11 SSI studies from China revealed similar diagnostic performance, with a summary sensitivity of 79% (95% CI: 72%-85%), specificity of 86% (95% CI: 82%-89%) and summary AUROC value of the SROC of 0.90 (95% CI: 0.87-0.92) for diagnosing DPN. CONCLUSIONS Our meta-analysis suggests that a tibial nerve stiffness measurement by SSI shows good performance in diagnosing DPN and has considerable potential as a noninvasive tool for detecting DPN.
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Affiliation(s)
- Yuping Chen
- Department of Endocrinology, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, China
| | - Honghong Duan
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, China
| | - Lichun Huang
- Department of Endocrinology, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, China
| | - Zhengrong Jiang
- Department of Endocrinology, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, China
| | - Huibin Huang
- Department of Endocrinology, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, China
- *Correspondence: Huibin Huang,
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Wang F, Zheng M, Hu J, Fang C, Chen T, Wang M, Zhang H, Zhu Y, Song X, Ma Q. Value of shear wave elastography combined with the Toronto clinical scoring system in diagnosis of diabetic peripheral neuropathy. Medicine (Baltimore) 2021; 100:e27104. [PMID: 34477149 PMCID: PMC8415960 DOI: 10.1097/md.0000000000027104] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Accepted: 08/12/2021] [Indexed: 01/05/2023] Open
Abstract
To evaluate the diagnostic values of shear wave elastography (SWE) alone and in combination with the Toronto clinical scoring system (TCSS) on diabetic peripheral neuropathy (DPN) in patients with type 2 diabetes mellitus (T2DM).The study included 41 DPN patients, 42 non-DPN patients, and 21 healthy volunteers. Conventional ultrasonography and SWE were performed on the 2 sides of the tibial nerves, and cross-sectional area (CSA) and nerve stiffness were measured. TCSS was applied to all patients. A receiver operating characteristic curve analysis was performed.The stiffness of the tibial nerve, as measured as mean, minimum or maximum elasticity, was significantly higher in patients in the DPN group than the other groups (P < .05). The tibial nerve of subjects in the non-DPN group was significantly stiffer compared to the control group (P < .05). There was no significant difference of the tibial nerve CSA among the 3 groups (P > .05). Mean elasticity of the tibial nerve with a cutoff of 71.3 kPa was the most sensitive (68.3%) and had a higher area under the curve (0.712; 0.602-0.806) among the 3 shear elasticity indices for diagnosing DPN when used alone. When combining SWE with TCSS in diagnosing DPN, the most effective parameter was the EMax, which yielded a sensitivity of 100.00% and a specificity of 95.24%.SWE is a better diagnostic tool for DPN than the conventional ultrasonic parameter CSA, and a higher diagnostic value is attained when combining SWE with TCSS.
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Affiliation(s)
- Fei Wang
- Department of Ultrasound, The Second Affiliated Hospital of Soochow University, 1055 Sanxiang Road, Suzhou, Jiangsu, China
| | - Miao Zheng
- Department of Endocrinology, The Second Affiliated Hospital of Soochow University, 1055 Sanxiang Road, Suzhou, Jiangsu, China
| | - Ji Hu
- Department of Endocrinology, The Second Affiliated Hospital of Soochow University, 1055 Sanxiang Road, Suzhou, Jiangsu, China
| | - Chen Fang
- Department of Endocrinology, The Second Affiliated Hospital of Soochow University, 1055 Sanxiang Road, Suzhou, Jiangsu, China
| | - Tong Chen
- Department of Ultrasound, The Second Affiliated Hospital of Soochow University, 1055 Sanxiang Road, Suzhou, Jiangsu, China
| | - Meng Wang
- Department of Ultrasound, The Second Affiliated Hospital of Soochow University, 1055 Sanxiang Road, Suzhou, Jiangsu, China
| | - Honghong Zhang
- Department of Endocrinology, The Second Affiliated Hospital of Soochow University, 1055 Sanxiang Road, Suzhou, Jiangsu, China
| | - Yunyan Zhu
- Department of Endocrinology, The Second Affiliated Hospital of Soochow University, 1055 Sanxiang Road, Suzhou, Jiangsu, China
| | - Xin Song
- Department of Ultrasound, The Second Affiliated Hospital of Soochow University, 1055 Sanxiang Road, Suzhou, Jiangsu, China
| | - Qi Ma
- Department of Ultrasound, The Second Affiliated Hospital of Soochow University, 1055 Sanxiang Road, Suzhou, Jiangsu, China
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Vafadar Ghasemi L, Behnam Rassouli M, Matin MM, Mahdavi-Shahri N. Benfotiamine reduced collagen IV contents of sciatic nerve in hyperglycemic rats. J Diabetes Metab Disord 2021; 20:21-30. [PMID: 34222057 PMCID: PMC8212243 DOI: 10.1007/s40200-020-00666-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Accepted: 10/19/2020] [Indexed: 01/13/2023]
Abstract
BACKGROUND Neuropathy as a common complication of hyperglycemia in diabetic patients is probably caused by metabolic and structural changes in extracellular matrix (ECM) of peripheral nerves. This study was designed to evaluate the effects of benfotiamine (BT) on the structural, biological and mechanical characteristics of rat sciatic nerve in hyperglycemic condition. MATERIALS AND METHODS Forty eight adult male Wistar rats were assigned to 6 groups (n = 8): control (healthy rats with no treatment; C), positive control (healthy rats received BT treatment; B), negative control groups 1&2 (hyperglycemic rats kept for 4 and/or 8 weeks; 4WD and 8WD, respectively) and experimental groups 1&2 (hyperglycemic rats treated by daily oral gavage of 100 mg kg- 1 body weight BT for 4 and/or 8 weeks; 4WD + BT and 8WD + BT, respectively). Hyperglycemia was induced by a single intraperitoneal injection of of streptozotocin (55 mg kg- 1 body weight). After a period of experimental period (4 and/or 8 weeks) rats were sacrificed and from each two segments (1 cm length) of left sciatic nerve were sampled. These samples were prepared for histological examinations (light and electron microscopy), collagen IV immunohistochemistry and strength tensile test. RESULTS In comparison to control groups, in 4WD and 8WD groups the amount of type IV collagen was increased, the structure of myelin sheath and nerve fibers were extensively altered and the tensile strength was significantly decreased (p < 0.05) while in 4WD + BT and 8WD + BT groups these abnormalities were attenuated. CONCLUSIONS It seems that BT treatment may rescue the sciatic nerve from the hyperglycemic-induced ECM structural abnormality. This beneficial advantage of BT is likely exerted through the modification of glucose metabolism pathways.
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Affiliation(s)
- Leila Vafadar Ghasemi
- Department of Biology, Faculty of Science, Ferdowsi University of Mashhad, Azadi Square, Mashhad, Iran
- Department of Biology, Faculty of Sciences, University of Zabol, Zabol, Iran
| | - Morteza Behnam Rassouli
- Department of Biology, Faculty of Science, Ferdowsi University of Mashhad, Azadi Square, Mashhad, Iran
| | - Maryam M. Matin
- Department of Biology, Faculty of Science, Ferdowsi University of Mashhad, Azadi Square, Mashhad, Iran
- Novel Diagnostics and Therapeutics Research Group, Institute of Biotechnology, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Naser Mahdavi-Shahri
- Department of Biology, Faculty of Science, Ferdowsi University of Mashhad, Azadi Square, Mashhad, Iran
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15
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Meghashyam K, Prakash M, Narang T, Sinha A, Sandhu MS. Role of shear wave elastography in treatment follow-up of leprosy neuropathy. J Ultrasound 2021; 25:265-272. [PMID: 33959898 DOI: 10.1007/s40477-021-00583-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 04/01/2021] [Indexed: 10/21/2022] Open
Abstract
PURPOSE Grayscale ultrasonography when complemented with shear wave elastography helps in better evaluation of treatment response of leprosy neuropathy and in guiding appropriate management of the patient. There is limited literature regarding the use of shear wave elastography in ulnar nerve neuropathy. Our purpose was to evaluate the role of shear wave elastography in assessing stiffness changes within the ulnar nerve during treatment of leprosy. METHODS This was a prospective study which included 30 patients diagnosed with leprosy neuropathy. Recruited patients were followed up, during the course of treatment, i.e. for 1 year. Serial ultrasonography of these patients was done at 0, 3, 6 and 12 months interval. RESULTS Significant (P < 0.05) decrease in elastography parameters was seen in transverse imaging plane between first and third, as well as first and fourth visits (mean stiffness and velocity pretreatment ~ 25.78 ± 18 kPa and 2.74 ± 0.98 m/s, mean stiffness and velocity post-treatment 15.67 ± 5.89 kPa and 2.24 ± 0.428 m/s). Although elastography parameters decreased during these visits in the long-axis imaging plane, they were not found to be statistically significant. However, gross morphology and cross-sectional area of the nerve did not change significantly across visits. Interestingly, elastography values were higher in patients with neuritis, though not statistically significant. CONCLUSION Shear wave elastography is a novel, upcoming modality in musculoskeletal imaging especially in the evaluation of peripheral neuropathy. It can act as an adjunct to grey-scale imaging, which can help in early diagnosis and in guiding treatment of leprosy neuropathy.
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Affiliation(s)
- Kesha Meghashyam
- Department of Radiodiagnosis and Imaging, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, 160012, India
| | - Mahesh Prakash
- Department of Radiodiagnosis and Imaging, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, 160012, India.
| | - Tarun Narang
- Department of Dermatology, Venerology and Leprology, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, 160012, India
| | - Anindita Sinha
- Department of Radiodiagnosis and Imaging, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, 160012, India
| | - M S Sandhu
- Department of Radiodiagnosis and Imaging, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, 160012, India
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Al-Mulla F, Mohammad A, Al Madhoun A, Haddad D, Ali H, Eaaswarkhanth M, John SE, Nizam R, Channanath A, Abu-Farha M, Ahmad R, Abubaker J, Thanaraj TA. ACE2 and FURIN variants are potential predictors of SARS-CoV-2 outcome: A time to implement precision medicine against COVID-19. Heliyon 2021; 7:e06133. [PMID: 33532652 PMCID: PMC7843038 DOI: 10.1016/j.heliyon.2021.e06133] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 12/23/2020] [Accepted: 01/26/2021] [Indexed: 01/08/2023] Open
Abstract
The severity of the new COVID-19 pandemic caused by the SARS-CoV-2 virus is strikingly variable in different global populations. SARS-CoV-2 uses ACE2 as a cell receptor, TMPRSS2 protease, and FURIN peptidase to invade human cells. Here, we investigated 1,378 whole-exome sequences of individuals from the Middle Eastern populations (Kuwait, Qatar, and Iran) to explore natural variations in the ACE2, TMPRSS2, and FURIN genes. We identified two activating variants (K26R and N720D) in the ACE2 gene that are more common in Europeans than in the Middle Eastern, East Asian, and African populations. We postulate that K26R can activate ACE2 and facilitate binding to S-protein RBD while N720D enhances TMPRSS2 cutting and, ultimately, viral entry. We also detected deleterious variants in FURIN that are frequent in the Middle Eastern but not in the European populations. This study highlights specific genetic variations in the ACE2 and FURIN genes that may explain SARS-CoV-2 clinical disparity. We showed structural evidence of the functionality of these activating variants that increase the SARS-CoV-2 aggressiveness. Finally, our data illustrate a significant correlation between ACE2 variants identified in people from Middle Eastern origins that can be further explored to explain the variation in COVID-19 infection and mortality rates globally.
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Affiliation(s)
- Fahd Al-Mulla
- Department of Genetics and Bioinformatics, Dasman Diabetes Institute (DDI), Dasman, Kuwait
| | - Anwar Mohammad
- Department of Biochemistry and Molecular Biology, Dasman Diabetes Institute (DDI), Dasman, Kuwait
| | - Ashraf Al Madhoun
- Department of Animal and Imaging Core Facilities, Dasman Diabetes Institute (DDI), Dasman, Kuwait
| | - Dania Haddad
- Department of Genetics and Bioinformatics, Dasman Diabetes Institute (DDI), Dasman, Kuwait
| | - Hamad Ali
- Department of Genetics and Bioinformatics, Dasman Diabetes Institute (DDI), Dasman, Kuwait
- Department of Medical Laboratory Sciences, Faculty of Allied Health Sciences, Health Sciences Center (HSC), Kuwait University, Jabriya, Kuwait
| | | | - Sumi Elsa John
- Department of Genetics and Bioinformatics, Dasman Diabetes Institute (DDI), Dasman, Kuwait
| | - Rasheeba Nizam
- Department of Genetics and Bioinformatics, Dasman Diabetes Institute (DDI), Dasman, Kuwait
| | - Arshad Channanath
- Department of Genetics and Bioinformatics, Dasman Diabetes Institute (DDI), Dasman, Kuwait
| | - Mohamed Abu-Farha
- Department of Special Services Facilities, Dasman Diabetes Institute (DDI), Dasman, Kuwait
| | - Rasheed Ahmad
- Department of Immunology & Microbiology, Dasman Diabetes Institute (DDI), Dasman, Kuwait
| | - Jehad Abubaker
- Department of Biochemistry and Molecular Biology, Dasman Diabetes Institute (DDI), Dasman, Kuwait
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Abstract
Postamputation stump and phantom pain are highly prevalent but remain a difficult condition to treat. The underlying mechanisms are not fully clarified, but growing evidence suggests that changes in afferent nerves, including the formation of neuromas, play an important role. The main objective of this cross-sectional study was to investigate whether ultrasound-verified neuroma swellings are more frequent in amputees with postamputation pain than in amputees without pain (primary outcome). Sixty-seven amputees were included. Baseline characteristics including the frequency and intensity of spontaneous stump and phantom pain were obtained, and sensory characteristics and evoked responses were assessed. A high-frequency ultrasound examination of the amputated extremity was performed to obtain information on the presence, size, and elasticity of swollen neuromas and pressure pain thresholds. Swollen neuromas were present in 53 (79.1%) of the 67 amputees included in the study, in 47 (82.5%) of 57 amputees with pain and in 6 (60.0%) of 10 amputees without pain (P = 0.2). No difference was found in stump pain intensity (P = 0.42) during the last week or in phantom pain intensity in the last month (P = 0.74) between amputees with and without swollen neuromas. Our findings suggest that it is not the presence of swollen neuromas itself that drives postamputation pain. However, changes in the transected nerve endings may still be crucial for driving postamputation pain because a positive Tinel sign was significantly more frequent in amputees with pain, irrespectively of the degree of neuroma swelling.
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Huang H, Wu S. Application of High-Resolution Ultrasound on Diagnosing Diabetic Peripheral Neuropathy. Diabetes Metab Syndr Obes 2021; 14:139-152. [PMID: 33469331 PMCID: PMC7813464 DOI: 10.2147/dmso.s292991] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 12/24/2020] [Indexed: 12/20/2022] Open
Abstract
Diabetic peripheral neuropathy (DPN) is a common complication of diabetes mellitus (DM). The typical manifestation is a length-dependent "glove and sock" sensation. At present, diagnosis is mainly dependent on clinical manifestations. Since the pathogenesis is not clear, there are no effective treatment measures. Management consists mainly of glucose control, peripheral nerve nutrition, and other measures to delay the progress of the disease; early diagnosis is therefore crucial to improving prognosis and quality of life for patients with DPN. Due to the lack of obvious symptoms in 50% of patients and the low sensitivity of neuro-electrophysiology to small fibers, the missed diagnosis rate is high. High-resolution ultrasound (HRU), as a convenient noninvasive tool, has been proven by many studies to have excellent clinical value in diagnosing DPN. With the development of related new technology, HRU shows promise for the screening, diagnosing, and follow-up of DPN, which could serve as a biomarker and provide new diagnostic insights. In this paper, we review the ability of HRU to detect nerve cross-sectional area and blood flow, and echo and other image changes, and in showing the characteristics of peripheral nerve morphological changes in patients with DPN. We also explore the application of two other recent technological developments-shear wave elastography (SWE) and ultrasound scoring systems-in improving the diagnostic efficiency of HRU in peripheral neuropathy.
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Affiliation(s)
- Hailun Huang
- Department of Neurology, Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou550001, People’s Republic of China
| | - Shan Wu
- Department of Neurology, Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou550001, People’s Republic of China
- Correspondence: Shan Wu Department of Neurology, Affiliated Hospital of Guizhou Medical University, Guizhou550001, People’s Republic of ChinaTel +86 13312231575 Email
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19
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Abstract
Diabetic peripheral neuropathy (DPN) is a common complication of diabetes mellitus. It often causes symmetrical paresthesia, loss of sensation, and hyperalgesia. Without early intervention, it might lead to diabetic foot ulceration, gangrene, and subsequent amputation in people with diabetes. DPN is an insidious disease and often underdiagnosed. This paper reviews the current national and international prevalence of DPN, screening methods for early DPN, including quantitative sensory measurement, neurological function scoring system, confocal microscopy, and high-frequency ultrasound, and summarizes the related research progress, clinical application, and development prospects of these methods in recent years.
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Gupta RS, Berrellez D, Chhugani N, Luna Lopez C, Maldonado A, Shah SB. Effects of paclitaxel on the viscoelastic properties of mouse sensory nerves. J Biomech 2020; 115:110125. [PMID: 33257008 DOI: 10.1016/j.jbiomech.2020.110125] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 10/23/2020] [Accepted: 11/03/2020] [Indexed: 11/18/2022]
Abstract
Paclitaxel is an effective and widely used chemotherapeutic, but also causes debilitating peripheral sensory neuropathy. Due to its influence on microtubule stability, we and others have hypothesized that paclitaxel alters neuromechanical properties. A prior study suggested that paclitaxel increases the tensile moduli of rat sensory nerves. However, the effects of paclitaxel on tissue level viscoelasticity have not been tested. In this study, sural branches of C57BL/6J mouse sciatic nerves were bilaterally excised. One nerve was treated with Ringer's solution containing paclitaxel, and the contralateral nerve with Ringer's alone. Nerves were then subject to a passive loading protocol in which peak stress, relaxed stress, and stress-relaxation dynamics were monitored at increasing strain. Elastic and tangent tensile moduli were calculated from both peak and relaxed stress-strain curves as well as failure stress were significantly elevated in paclitaxel-treated nerves compared to controls. Double-exponential fits (with τm and τn indicating fast and slow time constants, respectively) were successfully applied to model stress-relaxation. Though no significant differences in the τm and τn were found between groups, paclitaxel treatment significantly increased the variability of τm, suggesting heterogeneous effects on nerve biomechanical properties. Our data establish that paclitaxel effects at the cellular level influence tensile viscoelastic properties of nerves at the tissue level. These results have implications for understanding biomechanical influences on the progression and physical rehabilitation of paclitaxel-induced neuropathy.
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Affiliation(s)
- Rishi S Gupta
- Department of Orthopaedic Surgery, University of California, San Diego, USA
| | - Daniel Berrellez
- Posgrado en Ciencia de Materiales, Universidad de Sonora, Mexico
| | - Neha Chhugani
- Department of Bioengineering, University of California, San Diego, USA
| | - Carlos Luna Lopez
- Department of Cell Biology, California State University San Marcos, USA
| | | | - Sameer B Shah
- Department of Orthopaedic Surgery, University of California, San Diego, USA; Department of Bioengineering, University of California, San Diego, USA; Research Division, VA San Diego Healthcare System, USA.
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Afshar A, Tabrizi A. Interfascicular Gliding Dysfunction Relation with Focal Neuropathy in Diabetic Patients with Carpal Tunnel Syndrome. J Hand Microsurg 2020; 14:3-9. [DOI: 10.1055/s-0040-1718236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Abstract
AbstractCarpal tunnel syndrome (CTS), a common neuropathy of the upper limb, is highly prevalent in diabetic patients. Recent findings indicate that changes in median nerve elasticity and its gliding characteristics may contribute to the development of CTS. Normally, each nerve should be able to adapt to the positional changes by passive movement relative to the surrounding tissues. This ability is provided by a gliding apparatus around the nerve trunk in the surrounding soft tissue. The fascicles of nerve trunks can also glide against each other (interfascicular gliding). Sonoelastography indicates that nerve elasticity is decreased in patients with CTS compared to healthy patients. Moreover, decreased nerve elasticity in diabetes mellitus type II is associated with increased neuropathy, especially in peripheral nerves. Biomechanical factors, oxidative stress, and microvascular defects are also observed in diabetic neuropathy and account for different complications. A reduction in the elasticity of peripheral nerves may be related to decreased interfascicular gliding because of the biomechanical changes that occur in neuropathy. Surgical treatments, including nerve release and reduction of carpal tunnel pressure, improve peripheral gliding but do not resolve disease symptoms completely. According to the evidence, interfascicular gliding dysfunction is the most important factor in the pathogenesis of CTS in diabetic patients. Available evidence suggests that biomechanical variations affect interfascicular gliding more than peripheral gliding in diabetic patients. Decreased nerve elasticity is strongly correlated with decreased interfascicular gliding. It is further hypothesized that the concurrent use of antioxidants and pharmacological treatment (neuroprotection) such as alpha lipoic acid with carpal tunnel release in diabetic patients may alleviate the interfascicular gliding dysfunction and improve median neve elasticity. Decreased nerve elasticity and interfascicular gliding dysfunction play significant roles in the pathogenesis of CTS in diabetic patients.
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Affiliation(s)
- Ahmadreza Afshar
- Department of Orthopedics, Imam Khomeini Hospital, Urmia University of Medical Sciences, Urmia, Iran
| | - Ali Tabrizi
- Department of Orthopedics, Imam Khomeini Hospital, Urmia University of Medical Sciences, Urmia, Iran
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22
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Bedewi MA, Elsifey AA, Kotb MA, Bediwy AM, Ahmed YM, Swify SM, Abodonya AM. Shear wave elastography of the saphenous nerve. Medicine (Baltimore) 2020; 99:e22120. [PMID: 32925760 PMCID: PMC7489694 DOI: 10.1097/md.0000000000022120] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
The purpose of this study is to study sonoelastographic features of the saphenous nerve.The study included 72 saphenous nerves in 36 healthy subjects. High resolution ultrasound and Shearwave elastography were used to evaluate the saphenous nerve. Cross sectional area (CSA) and stiffness were measured.The mean CSA of the saphenous nerve was 5.7 mm. The mean shear elastic modulus of the saphenous nerve in the short axis was 29.5 kPa. The mean shear elastic modulus of the saphenous nerve in long axis was 29.9 kPa. The saphenous nerve elastic modulus also showed no correlation with CSA in neither the long axis nor short axis. Positive correlation between elasticity measurements in the long and short axes. Age, height, weight, and BMI showed no correlation with saphenous nerve elastic modulus in short or long axes.The elastic modulus of the saphenous nerve has been determined in healthy subjects and can serve as a reference for future assessment of the saphenous nerve before different procedures.
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Affiliation(s)
| | - Ayman A. Elsifey
- Department of Internal Medicine, Prince Sattam Bin Abdulaziz university, College of Medicine
| | - Mamdouh A. Kotb
- Neurology Department, College of Medicine, Prince Sattam Bin Abdulaziz University, Al-Kharj, Kingdom of Saudi Arabia
- Neurology Department, Faculty of Medicine, Minia University, Minia
| | | | | | | | - Ahmed M. Abodonya
- Anesthesia and Intensive Care Department, Faculty of Medicine, Al-Azhar University, Cairo, Egypt
- Surgery Department, College of Medicine, Prince Sattam Bin Abdulaziz University, Al-Kharj, Kingdom of Saudi Arabia
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Liu X, Zhou H, Wang Z, Liu X, Li X, Nie C, Li Y. WITHDRAWN: Efficacy of High-frequency Ultrasound Image Information Diagnosis on Neurological-abnormality in Patients with Type-2-diabetes Combined with Peripheral- neuropathy. Neurosci Lett 2020:135205. [PMID: 32590043 DOI: 10.1016/j.neulet.2020.135205] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 06/15/2020] [Accepted: 06/22/2020] [Indexed: 11/19/2022]
Abstract
This article has been withdrawn at the request of the Editor-in-Chief. The Publisher apologizes for any inconvenience this may cause. The full Elsevier Policy on Article Withdrawal can be found at https://www.elsevier.com/about/our-business/policies/article-withdrawal.
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Affiliation(s)
- Xiaoqiang Liu
- Department of Ultrasound, The Second Hospital of Dalian Medical University, Dalian City, 116027, Liaoning Province, China
| | - Hongyan Zhou
- Department of Ultrasound, The Second Hospital of Dalian Medical University, Dalian City, 116027, Liaoning Province, China
| | - Zhaoyun Wang
- Department of Wound repair, The Second Hospital of Dalian Medical University, Dalian City, 116027, Liaoning Province, China
| | - Xiaoli Liu
- Department of Respiratory, The Second Hospital of Dalian Medical University, Dalian City, 116027, Liaoning Province, China
| | - Xin Li
- Department of Radiology, The Second Hospital of Dalian Medical University, Dalian City, 116027, Liaoning Province, China
| | - Chen Nie
- Department of Neurology, The Second Hospital of Dalian Medical University, Dalian City, 116027, Liaoning Province, China
| | - Yang Li
- Department of Ultrasound, The Second Hospital of Dalian Medical University, Dalian City, 116027, Liaoning Province, China.
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24
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Wei M, Ye X. Feasibility of Point Shear Wave Elastography for Evaluating Diabetic Peripheral Neuropathy. JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2020; 39:1135-1141. [PMID: 31872909 DOI: 10.1002/jum.15198] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 11/23/2019] [Accepted: 12/04/2019] [Indexed: 06/10/2023]
Abstract
OBJECTIVES In the mode of Virtual Touch quantification (Siemens AG, Erlangen, Germany), point shear wave elastography (p-SWE) is widely used for noninvasive assessments of tissue stiffness, which may be useful in the evaluation of diabetic peripheral neuropathy (DPN). METHODS Thirty patients with type 2 diabetes and 20 control participants (7 with myoma of the uterus and 13 with kidney stones) were enrolled in this prospective study. The 30 patients were further divided into patients with DPN and patients without DPN. Conventional ultrasound examinations and p-SWE were used to examine the tibial nerve in the popliteal fossa. RESULTS Tibial nerve stiffness values in the overall patient group, patients with DPN, and patients without DPN were all significantly higher than in the control group (P < .05). The cutoff value of p-SWE for assessing DPN was 2.60 m/s; at that threshold, sensitivity was 63.33%, and specificity was 92.50%. CONCLUSIONS Point SWE was useful for the noninvasive assessment of DPN and had high specificity. The increased stiffness in patients without DPN indicated that the tibial nerve might be affected by diabetes.
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Affiliation(s)
- Mei Wei
- Department of Ultrasound, Division of Life Sciences and Medicine, First Affiliated Hospital of the University of Science and Technology of China, Hefei, China
| | - Xianjun Ye
- Department of Ultrasound, Division of Life Sciences and Medicine, First Affiliated Hospital of the University of Science and Technology of China, Hefei, China
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25
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Chen R, Wang XL, Xue WL, Sun JW, Dong XY, Jiang ZP, Wu H, Ma R, Zhou XL. Application value of conventional ultrasound and real-time shear wave elastography in patients with type 2 diabetic polyneuropathy. Eur J Radiol 2020; 126:108965. [PMID: 32268245 DOI: 10.1016/j.ejrad.2020.108965] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 02/29/2020] [Accepted: 03/10/2020] [Indexed: 12/16/2022]
Abstract
PURPOSE To explore the application value of conventional ultrasound and real-time shear wave elastography (SWE) to the tibial nerve (TN) and the common peroneal nerve (CPN) in diabetic peripheral neuropathy (DPN). MATERIALS AND METHODS Thirty-three healthy volunteers, 33 diabetic patients without DPN, and 30 diabetic patients with DPN were enrolled in this study. The anteroposterior diameter (APD), the cross-sectional area (CSA), and the perimeter of the TN and the CPN were measured by conventional ultrasound, and the stiffness of the nerves was measured by SWE. RESULTS The conventional ultrasound parameters and stiffness of the TN in patients with DPN were significantly larger than those of the other two groups (P < 0.01). The conventional ultrasound parameters of the CPN were significantly higher in patients with DPN than in the other two groups (P < 0.01).The patients with DPN demonstrated a greater stiffness of the CPN compared to the control group (P < 0.05). The comparison of all parameters for the left and right TNs and CPNs among the three groups showed no significant difference. The area under the curve (AUC) of TN stiffness for the diagnosis of DPN was significantly greater than that of conventional ultrasound parameters. CONCLUSION The conventional ultrasound parameters and the stiffness of the TN and the CPN were significantly higher in patients with DPN. The stiffness of the TN could better diagnose DPN than conventional ultrasound parameters. In short, conventional ultrasound and SWE of nerves are of good application value in the diagnosis of DPN.
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Affiliation(s)
- Rui Chen
- In-Patient Ultrasound Department, Second Affiliated Hospital of Harbin Medical University, Harbin, China.
| | - Xiao-Lei Wang
- In-Patient Ultrasound Department, Second Affiliated Hospital of Harbin Medical University, Harbin, China.
| | - Wei-Li Xue
- In-Patient Ultrasound Department, Second Affiliated Hospital of Harbin Medical University, Harbin, China.
| | - Jia-Wei Sun
- In-Patient Ultrasound Department, Second Affiliated Hospital of Harbin Medical University, Harbin, China.
| | - Xue-Ying Dong
- In-Patient Ultrasound Department, Second Affiliated Hospital of Harbin Medical University, Harbin, China.
| | - Zhao-Peng Jiang
- In-Patient Ultrasound Department, Second Affiliated Hospital of Harbin Medical University, Harbin, China.
| | - Han Wu
- In-Patient Ultrasound Department, Second Affiliated Hospital of Harbin Medical University, Harbin, China.
| | - Rao Ma
- In-Patient Ultrasound Department, Second Affiliated Hospital of Harbin Medical University, Harbin, China.
| | - Xian-Li Zhou
- In-Patient Ultrasound Department, Second Affiliated Hospital of Harbin Medical University, Harbin, China.
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Himeno T, Kamiya H, Nakamura J. Lumos for the long trail: Strategies for clinical diagnosis and severity staging for diabetic polyneuropathy and future directions. J Diabetes Investig 2020; 11:5-16. [PMID: 31677343 PMCID: PMC6944828 DOI: 10.1111/jdi.13173] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 10/29/2019] [Accepted: 10/31/2019] [Indexed: 02/06/2023] Open
Abstract
Diabetic polyneuropathy, which is a chronic symmetrical length-dependent sensorimotor polyneuropathy, is the most common form of diabetic neuropathy. Although diabetic polyneuropathy is the most important risk factor in cases of diabetic foot, given its poor prognosis, the criteria for diagnosis and staging of diabetic polyneuropathy has not been established; consequently, no disease-modifying treatment is available. Most criteria and scoring systems that were previously proposed consist of clinical signs, symptoms and quantitative examinations, including sensory function tests and nerve conduction study. However, in diabetic polyneuropathy, clinical symptoms, including numbness, pain and allodynia, show no significant correlation with the development of pathophysiological changes in the peripheral nervous system. Therefore, these proposed criteria and scoring systems have failed to become a universal clinical end-point for large-scale clinical trials evaluating the prognosis in diabetes patients. We should use quantitative examinations of which validity has been proven. Nerve conduction study, for example, has been proven effective to evaluate dysfunctions of large nerve fibers. Baba's classification, which uses a nerve conduction study, is one of the most promising diagnostic methods. Loss of small nerve fibers can be determined using corneal confocal microscopy and intra-epidermal nerve fiber density. However, no staging criteria have been proposed using these quantitative evaluations for small fiber neuropathy. To establish a novel diagnostic and staging criteria of diabetic polyneuropathy, we propose three principles to be considered: (i) include only generalizable objective quantitative tests; (ii) exclude clinical symptoms and signs; and (iii) do not restrictively exclude other causes of polyneuropathy.
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Affiliation(s)
- Tatsuhito Himeno
- Division of DiabetesDepartment of Internal MedicineAichi Medical University School of MedicineNagakuteJapan
| | - Hideki Kamiya
- Division of DiabetesDepartment of Internal MedicineAichi Medical University School of MedicineNagakuteJapan
| | - Jiro Nakamura
- Division of DiabetesDepartment of Internal MedicineAichi Medical University School of MedicineNagakuteJapan
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27
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Ultrasound elastography in the evaluation of peripheral neuropathies: a systematic review of the literature. Pol J Radiol 2019; 84:e581-e591. [PMID: 32082457 PMCID: PMC7016359 DOI: 10.5114/pjr.2019.91439] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Accepted: 11/20/2019] [Indexed: 12/16/2022] Open
Abstract
Peripheral neuropathy is associated with an increase in intraneural pressure, and hence ultrasound elastography seems to be an ideal method to detect early stages of this condition based on changes in the affected nerve stiffness. The aim of this systematic review was to analyse the applicability of strain elastography (SE) and shear wave elastography (SWE) in the evaluation of peripheral nerves in patients with neuropathy of various aetiologies. Published evidence shows clearly that ultrasound elastography can accurately diagnose many types of peripheral neuropathies (carpal tunnel syndrome and other entrapment neuropathies, diabetic peripheral neuropathy and peripheral neuropathy associated with other systemic diseases), sometimes at the stages at which the condition is still asymptomatic. However, it is still unclear whether elastographic changes within the nerves precede functional anomalies detectable on nerve conduction studies. Also, relatively little is known about the relationship between the stiffness of peripheral nerves and the severity of peripheral neuropathy and its underlying condition. Based on the reproducibility data, SWE seems to be superior to SE. Nevertheless, the sources of heterogeneity in the peripheral nerve stiffness in healthy persons need to be identified, and the sets of reference values for specific peripheral nerves need to be determined. Finally, the potential confounding effect of hardening artefacts, such as bones, on the stiffness of peripheral nerves needs to be verified. After addressing all these issues, elastographic evaluation of peripheral nerve stiffness might become a reliable, easily accessible, and convenient diagnostic test performed routinely in patients with various peripheral neuropathies.
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28
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Mateus A, Rebelo J, Silva AG. Effects of a Multimodal Exercise Program Plus Neural Gliding on Postural Control, Pain, and Flexibility of Institutionalized Older Adults: A Randomized, Parallel, and Double-Blind Study. J Geriatr Phys Ther 2019; 43:3-11. [PMID: 31569173 DOI: 10.1519/jpt.0000000000000249] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND AND PURPOSE The effect of adding neural mobilization to a multimodal program of exercises has not been investigated, despite its potential positive effects. The aim of this study was to compare the acute effects of a multimodal exercise program and neural gliding against a multimodal exercise program only, on pain intensity, gait speed, Timed Up and Go (TUG) test, lower limb flexibility, and static balance of institutionalized older adults. METHODS Older adults who were institutionalized (n = 26) were randomized to receive a multimodal exercise program plus neural gliding or a multimodal exercise program only. Both interventions were delivered twice a week for 8 weeks. Participants were assessed for pain, gait velocity, balance, flexibility, and TUG at baseline and postintervention. RESULTS A significant main effect of time for pain intensity (F1,24 = 8.95, P = .006), balance (F1,24 = 10.29, P = .004), and gait velocity (F1,24 = 5.51, P = .028) was observed, indicating a positive impact of both interventions. No other significant effects were found (TUG and flexibility; P > .05). DISCUSSION A 45-minute multimodal exercise program, twice a week for 8 weeks, has a positive impact on pain intensity, balance, and gait velocity, but neural gliding has no additional benefit. It is unclear whether dose and type of neural mobilization may have had an impact on results. Considering the structural and physiological changes that tend to occur with age, future studies could explore the effects of neural tensioning or of higher doses of neural mobilization. CONCLUSIONS This study suggests that adding neural gliding to a multimodal exercise program has no additional benefit.
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Affiliation(s)
- Ana Mateus
- School of Health Sciences, University of Aveiro, Campus Universitário de Santiago, Portugal
| | - Jessica Rebelo
- Lar Santa Catarina do Reboleiro, Avenida da Ribeirinha, Trancoso, Portugal
| | - Anabela G Silva
- School of Health Sciences, University of Aveiro, Campus Universitário de Santiago, Portugal.,CINTESIS.UA, University of Aveiro, Campus Universitário de Santiago, Portugal
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29
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Wee TC, Simon NG. Ultrasound elastography for the evaluation of peripheral nerves: A systematic review. Muscle Nerve 2019; 60:501-512. [PMID: 31269240 DOI: 10.1002/mus.26624] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2019] [Revised: 06/24/2019] [Accepted: 06/29/2019] [Indexed: 02/06/2023]
Abstract
Peripheral nerve disorders are commonly encountered in clinical practice. Electrodiagnostic studies remain the cornerstone of the evaluation of nerve disorders. More recently, ultrasound has played an increasing complementary role in the neuromuscular clinic. Ultrasound elastography is a technique that measures the elastic properties of tissues. Given the histological changes that occur in diseased peripheral nerves, nerve ultrasound elastography has been explored as a noninvasive way to evaluate changes in nerve tissue composition. Studies to date suggest that nerve stiffness tends to increase in the setting of peripheral neuropathy, regardless of etiology, consistent with loss of more compliant myelin, and replacement with connective tissue. The aim of this systematic review is to summarize the current literature on the use of ultrasound elastography in the evaluation of peripheral neuropathy. Limitations of ultrasound elastography and gaps in current literature are discussed, and prospects for future clinical and research applications are raised.
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Affiliation(s)
- Tze Chao Wee
- Department of Rehabilitation Medicine, Changi General Hospital, Singapore
| | - Neil G Simon
- St Vincent's Clinical School, University of New South Wales, Darlinghurst, New South Wales, Australia
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30
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Aslan M, Aslan A, Emeksiz HC, Candan F, Erdemli S, Tombul T, Gunaydın GD, Kabaalioğlu A. Assessment of Peripheral Nerves With Shear Wave Elastography in Type 1 Diabetic Adolescents Without Diabetic Peripheral Neuropathy. JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2019; 38:1583-1596. [PMID: 30444266 DOI: 10.1002/jum.14848] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Revised: 09/24/2018] [Accepted: 09/30/2018] [Indexed: 06/09/2023]
Abstract
OBJECTIVES To investigate the utility of shear wave elastography (SWE) in detecting morphologic abnormalities of the median nerve and posterior tibial nerve in transverse and longitudinal axes in adolescents with type 1 diabetes mellitus (DM) without diabetic peripheral neuropathy (DPN). METHODS The median nerves and posterior tibial nerves of 25 adolescents with diagnosis and follow-up of type 1 DM without DPN and 32 healthy volunteers were evaluated with SWE by 2 observers on the transverse and longitudinal axes. The cross-sectional area and thickness of the nerves and disease duration were noted, and probable associations of these parameters with SWE features were analyzed. Interobserver and intraobserver correlations were also examined. The statistical significance level was set at P < .05. RESULTS Both the median nerve and posterior tibial nerve were smaller, thinner, and stiffer in the patient group for both observers on both axes. The disease duration weakly correlated with median nerve SWE features (r = 0.245-0391). The thickness and cross-sectional area had no correlations with SWE features. CONCLUSIONS The median nerve and posterior tibial nerve in adolescents with type 1 DM without DPN have morphologic abnormalities that can be displayed by SWE regardless of the imaging axis. Shear wave elastography may have a potential role in subclinical DPN, but the reliability of the findings is not as high as desirable.
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Affiliation(s)
- Mine Aslan
- Departments of Radiology, Istanbul Medeniyet University Göztepe Training and Research Hospital, Kadikoy, Turkey
| | - Ahmet Aslan
- Departments of Radiology, Istanbul Medeniyet University Göztepe Training and Research Hospital, Kadikoy, Turkey
| | - Hamdi Cihan Emeksiz
- Pediatric Endocrinology, Istanbul Medeniyet University Göztepe Training and Research Hospital, Kadikoy, Turkey
| | - Fatma Candan
- Neurology, Istanbul Medeniyet University Göztepe Training and Research Hospital, Kadikoy, Turkey
| | - Servet Erdemli
- Departments of Radiology, Istanbul Medeniyet University Göztepe Training and Research Hospital, Kadikoy, Turkey
| | - Temel Tombul
- Neurology, Istanbul Medeniyet University Göztepe Training and Research Hospital, Kadikoy, Turkey
| | - Gülçin Durukan Gunaydın
- Departments of Radiology, Istanbul Medeniyet University Göztepe Training and Research Hospital, Kadikoy, Turkey
| | - Adnan Kabaalioğlu
- Departments of Radiology, Istanbul Medeniyet University Göztepe Training and Research Hospital, Kadikoy, Turkey
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31
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Ulnar nerve instability in the cubital tunnel of asymptomatic volunteers. J Ultrasound 2019; 22:337-344. [PMID: 30864003 DOI: 10.1007/s40477-019-00370-9] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Accepted: 02/25/2019] [Indexed: 12/22/2022] Open
Abstract
PURPOSE Ulnar nerve instability (UNI) in the cubital tunnel is defined as ulnar nerve subluxation or dislocation. It is a common disorder that may be noted in patients with neuropathy or in the asymptomatic. Our prospective, single-site study utilized high-resolution ultrasonography (US) to evaluate the ulnar nerve for cross-sectional area (CSA) and measures of shear-wave elastography (SWE). Mechanical algometry was obtained from the ulnar nerve in the cubital tunnel to assess pressure pain threshold (PPT). METHODS Forty-two asymptomatic subjects (n = 84 elbows) (25 males, 17 females) aged 22-40 were evaluated. Two chiropractic radiologists, both with 4 years of ultrasound experience performed the evaluation. Ulnar nerves in the cubital tunnel were sampled bilaterally in three different elbow positions utilizing US, SWE, and algometry. Descriptive statistics, two-way ANOVA, and rater reliability were utilized for data analysis with p ≤ 0.05. RESULTS Fifty-six percent of our subjects demonstrated UNI. There was a significant increase in CSA in subjects with UNI (subluxation: 0.066 mm2 ± 0.024, p = 0.027; dislocation: 0.067 mm2 ± 0.024, p = 0.003) compared to controls (0.057 mm2 ± 0.017) in all three elbow positions. There were no significant group differences in SWE or algometry. Inter- and intra-observer agreements for CSA of the ulnar nerves within the cubital tunnel were assessed using intraclass correlation coefficient (ICC) and demonstrated moderate (ICC 0.54) and excellent (ICC 0.94) reliability. CONCLUSIONS Most of the asymptomatic volunteers demonstrated UNI. There was a significant increase in CSA associated with UNI implicating it as a risk factor for ulnar neuropathy in the cubital tunnel. There were no significant changes in ulnar nerve SWE and PPT. Intra-rater agreement was excellent for the CSA assessment of the ulnar nerve in the cubital tunnel. High-resolution US could be utilized to assess UNI and monitor for progression to ulnar neuropathy.
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He Y, Xiang X, Zhu BH, Qiu L. Shear wave elastography evaluation of the median and tibial nerve in diabetic peripheral neuropathy. Quant Imaging Med Surg 2019; 9:273-282. [PMID: 30976551 DOI: 10.21037/qims.2019.02.05] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Background To evaluate the value of shear wave elastography (SWE) in the detection of diabetic peripheral neuropathy (DPN) of the median and tibial nerves. Methods The study included 40 DPN patients, 40 diabetic mellitus (DM) patients without DPN, and 40 healthy subjects. High-resolution ultrasonography (US) and SWE were performed on the median nerve (MN) and tibial nerve (TN), and cross-sectional area (CSA) and nerve stiffness were measured. ROC analysis was also performed. Results The patients with DPN demonstrated higher stiffness of the median and tibial nerve compared with that of healthy volunteers and DM patients (P<0.001). Bilateral analysis showed that there was no significant difference in nerve stiffness between the left and right median nerves and tibial nerves in DPN patients (P>0.05). The stiffness of median nerve and tibial nerve in each one side also had no significant difference in patients with DPN (P>0.05). The CSA of the tibial nerve in the DPN group was significantly larger than that in the other groups (P<0.001), while there was no significant difference of median nerve CSA among the three groups (P>0.05). The area under curve (AUC) of SWE (MN: 0.899, TN: 0.927) to diagnose DPN was significantly greater than that of CSA (TN: 0.798). The optimal cut-off value in SWE of the tibial nerve and median nerve for diagnosis of DPN was 4.11 and 4.06 m/s, respectively, with a good sensitivity and specificity. Conclusions Median and tibial nerve stiffness was significantly higher in patients with DPN. These findings suggest that SWE-based stiffness measurement of the nerve was a better method than CSA, and it can be used as another effective assistant method in the diagnosis of DPN.
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Affiliation(s)
- Ying He
- Department of Ultrasound, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Xi Xiang
- Department of Ultrasound, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Bi-Hui Zhu
- Department of Ultrasound, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Li Qiu
- Department of Ultrasound, West China Hospital, Sichuan University, Chengdu 610041, China
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Zhu B, Yan F, He Y, Wang L, Xiang X, Tang Y, Yang Y, Qiu L. Evaluation of the healthy median nerve elasticity: Feasibility and reliability of shear wave elastography. Medicine (Baltimore) 2018; 97:e12956. [PMID: 30412114 PMCID: PMC6221628 DOI: 10.1097/md.0000000000012956] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
The present study applied the shear wave elastography (SWE) to the median nerve in order to investigate the feasibility and reliability of its use in 40 healthy volunteers. Shear wave velocities of the median nerve on bilateral forearms and right carpal tunnel were obtained with relaxing or stretching conditions. The inter- and intraobserver agreements and differences of nerve elasticity among groups were evaluated using intraclass correlation coefficients, the paired t test, and the Wilcoxon signed-rank test, respectively. The stiffness of the site was expressed by 3 types of values: mean, minimum, and maximum shear-wave velocities. The inter- and intraobserver agreements were excellent (0.852-0.930) on the right forearm. No differences were detected between the bilateral forearm (mean: P = .14), while the values of different body sites and postures were statistically different (P < .001). SWE, as a noninvasive and objective tool, reached a good consistency in evaluating the healthy median nerve. Further studies are essential to investigate the detailed influencing factors and provide an insight of SWE to estimate both the normal nerve and peripheral neuropathy.
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Affiliation(s)
| | - Feng Yan
- Clinical Ultrasound Imaging Drug Research Lab, West China Hospital of Sichuan University, Chengdu, Sichuan Province, China
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Décard BF, Pham M, Grimm A. Ultrasound and MRI of nerves for monitoring disease activity and treatment effects in chronic dysimmune neuropathies – Current concepts and future directions. Clin Neurophysiol 2018; 129:155-167. [DOI: 10.1016/j.clinph.2017.10.028] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2017] [Revised: 10/03/2017] [Accepted: 10/07/2017] [Indexed: 02/07/2023]
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Vaeggemose M, Pham M, Ringgaard S, Tankisi H, Ejskjaer N, Heiland S, Poulsen PL, Andersen H. Magnetic Resonance Neurography Visualizes Abnormalities in Sciatic and Tibial Nerves in Patients With Type 1 Diabetes and Neuropathy. Diabetes 2017; 66:1779-1788. [PMID: 28432188 DOI: 10.2337/db16-1049] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Accepted: 04/17/2017] [Indexed: 11/13/2022]
Abstract
This study evaluates whether diffusion tensor imaging magnetic resonance neurography (DTI-MRN), T2 relaxation time, and proton spin density can detect and grade neuropathic abnormalities in patients with type 1 diabetes. Patients with type 1 diabetes (n = 49) were included-11 with severe polyneuropathy (sDPN), 13 with mild polyneuropathy (mDPN), and 25 without polyneuropathy (nDPN)-along with 30 healthy control subjects (HCs). Clinical examinations, nerve conduction studies, and vibratory perception thresholds determined the presence and severity of DPN. DTI-MRN covered proximal (sciatic nerve) and distal (tibial nerve) nerve segments of the lower extremity. Fractional anisotropy (FA) and the apparent diffusion coefficient (ADC) were calculated, as were T2 relaxation time and proton spin density obtained from DTI-MRN. All magnetic resonance findings were related to the presence and severity of neuropathy. FA of the sciatic and tibial nerves was lowest in the sDPN group. Corresponding with this, proximal and distal ADCs were highest in patients with sDPN compared with patients with mDPN and nDPN, as well as the HCs. DTI-MRN correlated closely with the severity of neuropathy, demonstrating strong associations with sciatic and tibial nerve findings. Quantitative group differences in proton spin density were also significant, but less pronounced than those for DTI-MRN. In conclusion, DTI-MRN enables detection in peripheral nerves of abnormalities related to DPN, more so than proton spin density or T2 relaxation time. These abnormalities are likely to reflect pathology in sciatic and tibial nerve fibers.
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Affiliation(s)
- Michael Vaeggemose
- Department of Neurology, Aarhus University Hospital, Aarhus, Denmark
- Danish Diabetes Academy, Odense, Denmark
| | - Mirko Pham
- Department of Neuroradiology, Würzburg University Hospital, Würzburg, Germany
| | | | - Hatice Tankisi
- Department of Clinical Neurophysiology, Aarhus University Hospital, Aarhus, Denmark
| | - Niels Ejskjaer
- Departments of Clinical Medicine and Endocrinology, Aalborg University Hospital, Aalborg, Denmark
| | - Sabine Heiland
- Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany
| | - Per L Poulsen
- Department of Endocrinology and Internal Medicine, Aarhus University Hospital, Aarhus, Denmark
| | - Henning Andersen
- Department of Neurology, Aarhus University Hospital, Aarhus, Denmark
- International Diabetic Neuropathy Consortium (IDNC), Aarhus University, Aarhus, Denmark
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36
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Ishibashi F, Taniguchi M, Kojima R, Kawasaki A, Kosaka A, Uetake H. Elasticity of the tibial nerve assessed by sonoelastography was reduced before the development of neuropathy and further deterioration associated with the severity of neuropathy in patients with type 2 diabetes. J Diabetes Investig 2015; 7:404-12. [PMID: 27330728 PMCID: PMC4847896 DOI: 10.1111/jdi.12408] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2015] [Revised: 06/27/2015] [Accepted: 07/29/2015] [Indexed: 12/23/2022] Open
Abstract
Aims/Introduction To measure the elasticity of the tibial nerve using sonoelastography, and to associate it with diabetic neuropathy severity, the cross‐sectional area of the tibial nerve and neurophysiological findings in type 2 diabetic patients. Materials and Methods The elasticity of the tibial nerve was measured as the tibial nerve:acoustic coupler strain ratio using high‐resolution ultrasonography in 198 type 2 diabetic patients stratified into subgroups by neuropathy severity, and 29 control participants whose age and sex did not differ from the diabetic subgroups. Results The elasticity of the tibial nerve in patients without neuropathy (P < 0.001) was reduced compared with controls (0.76 ± 0.023), further decreasing (0.655 ± 0.014 to 0.414 ± 0.018) after developing neuropathy. The cut‐off value of elasticity of the tibial nerve that suggested the presence of neuropathy was 0.558. The area under the curve (0.829) was greater than that for the cross‐sectional area (0.612). The cross‐sectional area of the tibial nerve in diabetic patients without neuropathy (6.11 ± 0.13 mm2) was larger than that in controls (4.84 ± 0.16 mm2), and increased relative to neuropathy severity (P < 0.0001). The elasticity of the tibial nerve was negatively associated with neuropathy severity (P < 0.0001), cross‐sectional area (P = 0.002) and 2000 Hz current perception threshold (P = 0.011), and positively associated with nerve conduction velocities (P < 0.0001). Conclusions Determining the elasticity of the tibial nerve in type 2 diabetic patients could reveal early biomechanical changes that were likely caused by thickened fibrous sheaths of peripheral nerves, and might be a novel tool for characterizing diabetic neuropathy.
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