Journals / Nöropsikiyatri Arşivi / 2019 / Cilt: 56 - Sayı: 2

Tracking Pain in Resting State Networks in Patients with Hereditary and Diabetic Neuropathy

Ağrı Algısı ile İlişkili Korteksin Herediter ve Diyabetik Nöropati Hastalarında İstirahat Durumu (Resting State) fMRG ile Değerlendirilmesi

Pages
92–98
Publication Date
2022-10-19
DOI
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In patients with painful diabeticneuropathy, the major findings were the increased connectivity betweenleft anterior cingulate cortex and posterior cingulate cortex/precuneus,and the increased connectivity between medial prefrontal cortex and leftmedial temporal region compared to their controls.Conclusion: This study revealed that hereditary and diabetic painfulneuropathy patients exhibit different patterns of functional connectivity.The clinical differences in these groups regarding the presence ofneuropathic pain may relate to this difference in cortical organization.

📌 3 Key Takeaways

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Objective & Hypothesis:Introduction: Chronic pain is associated with maladaptive plasticchanges in the brain.
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Key Findings & Data:Based on clinical differences concerningpain perception, we hypothesized that functional connectivity analysiswould reveal distinct patterns in resting-state networks in these groups.Methods: Ten diabetic patients with painful neuropathy (5F/5M; meanage=50.10±6.05 years), 10 patients with hereditary neuropathy (5F/5M;mean age=37.80±14.01 years), 18 age-and gender-matched healthycontrols (eight for painful diabetic neuropathy and 10 for hereditaryneuropathy) and seven diabetic controls without painful neuropathywere enrolled in the study.
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Conclusion & Impact:In patients with painful diabeticneuropathy, the major findings were the increased connectivity betweenleft anterior cingulate cortex and posterior cingulate cortex/precuneus,and the increased connectivity between medial prefrontal cortex and leftmedial temporal region compared to their controls.Conclusion: This study revealed that hereditary and diabetic painfulneuropathy patients exhibit different patterns of functional connectivity.The clinical differences in these groups regarding the presence ofneuropathic pain may relate to this difference in cortical organization.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Introduction: Chronic pain is associated with maladaptive plasticchanges in the brain. It is usually more prominent in acquired pathologiesof nerve fibers as in diabetic neuropathy despite less severe degenerationthan hereditary neuropathies. Based on clinical differences concerningpain perception, we hypothesized that functional connectivity analysiswould reveal distinct patterns in resting-state networks in these groups.Methods: Ten diabetic patients with painful neuropathy (5F/5M; meanage=50.10±6.05 years), 10 patients with hereditary neuropathy (5F/5M;mean age=37.80±14.01 years), 18 age-and gender-matched healthycontrols (eight for painful diabetic neuropathy and 10 for hereditaryneuropathy) and seven diabetic controls without painful neuropathywere enrolled in the study. All subjects (n=45) underwent a 5-minresting-state scan in a 3T magnetic resonance scanner. The images wereanalyzed with seed-based functional connectivity method. The grouplevel maps of the default mode network and insula-cingulate networkwere identified for each group.Results: Patients with hereditary neuropathy displayed increasedconnectivity between left insula and left anterior cingulate cortex andinversely correlated activity between left insula and left inferior parietallobule compared to their controls. In patients with painful diabeticneuropathy, the major findings were the increased connectivity betweenleft anterior cingulate cortex and posterior cingulate cortex/precuneus,and the increased connectivity between medial prefrontal cortex and leftmedial temporal region compared to their controls.Conclusion: This study revealed that hereditary and diabetic painfulneuropathy patients exhibit different patterns of functional connectivity.The clinical differences in these groups regarding the presence ofneuropathic pain may relate to this difference in cortical organization.

Özet

Amaç: Kronik ağrı beyindeki maladaptif plastik değişikliklerle ilişkilendirilmektedir. İlginç olarak, kalıtsal nöropatilerdeki ağır dejenerasyona rağmen, ağrı akkiz nöropatilerde (örneğin; diyabetik nöropatide) kalıtsal nöropatilere kıyasla daha belirgindir. Ağrı algısındaki bu klinik farklılıktan yola çıkılarak, fonksiyonel konnektivite analizinin bu iki hasta grubunda farklı istirahat durumu ağları (resting state networks) ortaya koyacağı düşünülmüştür. Yöntem: Bu çalışmaya 10 ağrılı nöropatisi olan diyabetik hasta (5K/5E; ort. yaş=50,10±6,05), 10 herediter nöropati hastası (5K/5E; ort. yaş=37,80±14,01), yaş ve cinsiyet yönünden eşleştirilmiş 18 sağlıklı kontrol (ağrılı diyabetik nöropati için 8, herediter nöropati için 10) ve ağrılı nöropatisi olmayan 7 diyabetik kontrol dahil edilmiştir. Tüm bireyler (n=45) 3T manyetik rezonans tarayıcıda 5 dakikalık istirahat durumu fMRG çekimine alınmıştır. Görüntüler tohum-tabanlı bağlantı yöntemi (seed-based functional connectivity) kullanılarak analiz edilmiştir. Default-mode ağı ve insula-singulat ağının grup haritaları çıkarılmıştır. Bulgular: Herediter nöropati hastalarında kendi kontrollerine kıyasla, sol insula ve sol anterior singulat korteks arasında artmış konnektivite, sol insula ve sol inferior pariyetal lobül arasında ters yönde korele bir konnektivite olduğu görülmüştür. Ağrılı diyabetik nöropati hastalarında ise kendi kontrollerine göre bakıldığında temel değişiklikler, sol anterior singulat korteks ve posterior singulat korteks/prekuneus arasında artmış konnektivite, medyal prefrontal korteks ve sol medyal temporal bölge arasında artmış konnektivitedir. Sonuç: Bu çalışma, herediter ve ağrılı diyabetik nöropati hastalarının farklı desenlerde fonksiyonel konnektivite gösterdiğini ortaya koymaktadır. İlgili hasta gruplarının nöropatik ağrı yönünden sergilediği klinik farklılıklar, kortikal reorganizasyondaki bu farklılıkla ilişkili olabilir.

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Cite This Article

ÖZTEKİN, N., HAS, A. C., SAĞ, A. T., TEMUÇİN, Ç. M., OĞUZ, K. K. (2022). Tracking Pain in Resting State Networks in Patients with Hereditary and Diabetic Neuropathy. Nöropsikiyatri Arşivi, Cilt: 56 - Sayı: 2, 92–98. https://ajindex.com/articles/584652

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