Behavioural, morphological and electrophysiological assessment of the effects of type 2 diabetes mellitus on large and small nerve fibres in Zucker diabetic fatty, Zucker lean and Wistar rats

2018 ◽  
Vol 22 (8) ◽  
pp. 1457-1472 ◽  
Author(s):  
E. Garcia-Perez ◽  
T. Schönberger ◽  
M. Sumalla ◽  
B. Stierstorfer ◽  
R. Solà ◽  
...  
2020 ◽  
Vol 4 (Supplement_2) ◽  
pp. 747-747
Author(s):  
Undurti Das

Abstract Objectives To evaluate the effect of arachidonic acid (AA) in the pathobiology of chemical-induced type 1 and type 2 diabetes mellitus in experimental animals. Methods In vitro studies were performed using RIN 5F cells and animal studies in 3–4 week old Wistar rats. Alloxan and streptozotocin (STZ) were used to induce type 1 diabetes and STZ employed to induce type 2 diabetes mellitus. RIN5F cell proliferation was measured using MTT assay. Establishment of alloxan and STZ-induced diabetes in animals was confirmed by measuring plasma glucose levels. Plasma insulin, IL-6, TNF levels were measured by ELISA. Expression of cyclo-oxygenase-2, lipoxiygenase, NF-kB and IkB genes was performed in pancreatic and adipose tissues. Results Alloxan and STZ-induced cytotoxicity to RIN5F cells was inhibited by arachidonic acid that was not blocked by both COX and LOX enzymes. Alloxan and STZ-induced type 1 diabetes mellitus and STZ-induced type 2 diabetes was prevented by arachidonic acid treatment. Plasma levels of glucose, insulin, IL-6 and TNF and expressions of NF-kB, IkB, COX-2, LOX in pancrreatic and adipose tissues and lipocalin-2 in adipose tissue were restored to normal by arachidonic acid treatment. AA treatment enhanced plasma lipoxin A4 (LXA4) levels. LXA4 also prevented both type 1 and type 2 diabetes induction by STZ. Conclusions AA prevented the development of both type 1 and type 2 diabetes mellitus in Wistar rats and protected pancreatic beta cells form the cytotoxicity of alloxan and STZ. AA showed strong anti-inflammatory actions. AA seems to bring about its anti-inflammatory and anti-diabetic actions by enhancing LXA4 formation. Funding Sources None.


2018 ◽  
Vol 97 ◽  
pp. 652-655 ◽  
Author(s):  
Muhammad Afzal ◽  
Shakir Saleem ◽  
Nalini Singh ◽  
Imran Kazmi ◽  
Ruqaiyah Khan ◽  
...  

2018 ◽  
Vol 54 (2) ◽  
pp. 129-137 ◽  
Author(s):  
Minerva K. Fahmy ◽  
Hayam G. Sayyed ◽  
Eman A. Abd Elrahim ◽  
Rana T.A. Farag

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
Stella Papachristou ◽  
Kalliopi Pafili ◽  
Grigorios Trypsianis ◽  
Dimitrios Papazoglou ◽  
Konstantinos Vadikolias ◽  
...  

Aim of the Study. To examine the correlation between skin AGEs and parameters of distal sensorimotor polyneuropathy (DSPN) in type 2 diabetes mellitus (T2DM). Materials and Methods. We included 132 subjects (88 men) with a mean age of 64.57 years and median T2DM duration of 14.5 years. Skin AGEs were measured with AGE reader mu connect (Diagnoptics) on the dominant arm. The device enables single and automated triplicate measurements: both of these were performed. DSPN was diagnosed through the neuropathy disability score (NDS). Small nerve fibre function was assessed by temperature and pinprick sensation on the foot. Bilateral measurement of the vibration perception threshold (VPT) on the hallux was carried out by using a neurothesiometer (Horwell Scientific Laboratory Supplies). Results. Single and triplicate AGE measurements were positively correlated with each other (Pearson’s correlation coefficient r = 0.991 , 95 % CI = 0.987 -0.994, p < 0.001 ). AGEs were higher among subjects with vs. those without DSPN ( p < 0.001 ). Furthermore, they were higher among subjects with reduced vs. normal temperature sensation ( p < 0.001 ), among subjects with reduced vs. normal pinprick sensation ( p = 0.002 ), among those with abnormal vs. normal monofilament examination ( p < 0.001 ), and among those with abnormal vs. normal VPT ( p < 0.001 ). AGEs were correlated with NDS, VPT, and monofilament score. Conclusions. In T2DM, skin AGEs are increased in the presence of DSPN. This holds true both for large and for small nerve function impairment. Moreover, AGEs are correlated with DSPN severity.


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