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2015 ; 388
(11
): 1129-40
Nephropedia Template TP
gab.com Text
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Twit Text #
English Wikipedia
A streptozotocin-induced diabetic neuropathic pain model for static or dynamic
mechanical allodynia and vulvodynia: validation using topical and systemic
gabapentin
#MMPMID26134846
Ali G
; Subhan F
; Abbas M
; Zeb J
; Shahid M
; Sewell RD
Naunyn Schmiedebergs Arch Pharmacol
2015[Nov]; 388
(11
): 1129-40
PMID26134846
show ga
Neuropathic vulvodynia is a state of vulval discomfort characterized by a burning
sensation, diffuse pain, pruritus or rawness with an acute or chronic onset.
Diabetes mellitus may cause this type of vulvar pain in several ways, so this
study was conducted to evaluate streptozotocin-induced diabetes as a neuropathic
pain model for vulvodynia in female rats. The presence of streptozotocin
(50 mg/kg i.p.)-induced diabetes was initially verified by disclosure of
pancreatic tissue degeneration, blood glucose elevation and body weight loss
5-29 days after a single treatment. Dynamic (shortened paw withdrawal latency to
light brushing) and static (diminished von Frey filament threshold pressure)
mechanical allodynia was then confirmed on the plantar foot surface.
Subsequently, both static and dynamic vulvodynia was detected by application of
the paradigm to the vulval region. Systemic gabapentin (75 mg/kg, i.p.) and
topical gabapentin (10 % gel) were finally tested against allodynia and
vulvodynia. Topical gabapentin and the control gel vehicle significantly
increased paw withdrawal threshold in the case of the static allodynia model and
also paw withdrawal latency in the model for dynamic allodynia when compared with
the streptozotocin-pretreated group. Likewise, in the case of static and dynamic
vulvodynia, there was a significant antivulvodynia effect of systemic and topical
gabapentin treatment. These outcomes substantiate the value of this model not
only for allodynia but also for vulvodynia, and this was corroborated by the
findings not only with systemic but also with topical gabapentin.
|Administration, Topical
[MESH]
|Amines/administration & dosage/*therapeutic use
[MESH]
|Analgesics/administration & dosage/*therapeutic use
[MESH]
|Animals
[MESH]
|Cyclohexanecarboxylic Acids/administration & dosage/*therapeutic use
[MESH]