Effects of the Cleome Rutidosperma methanolic extracts on oxidativestress in type 2diabetes animal models

 Effects of the Cleome Rutidosperma methanolic extracts on oxidativestress in type 2diabetes animal models

Introduction:

Diabetes melltus (DM) is one of the most frequentmetaboc diseases

that affect various body systems.Cognitve mpairment caused by diabetes is gaining

more acceptance and attentionIn this study, we havenvestigated the effects of a Rutidosperma methanolic extracts on oxidative stress (OS) and cognitive deficts in type 2 diabetic rats.

Cleome rutidosperma inexpensive and has minimal side effects.

Cleome rutidosperma (Family-Cleomaceae) is an annual herbaceous plant, and it is commonly known as Fringed Spider Flower. Cleome rutidosperma is not only a weed, but it is an important medicinal plant, too.

Literature survey indicated that this medicinal plant is available in tropical parts of India has various reported biological activities like analgesic, anti-pyretic, anti-inflammatory, locomotory effect, wound healing property, anti-microbial, anti-oxidant, anti-convulsant, anti-diabetic, diuretic and laxative activity etc.

PARAMETERS AND METHADOLOGY

Assay of serum insulin and hippocampus

oxidative stress parameters:

Insulin concentration was determined using the rat insuin ELISA Kit (Mercodia, Uppsala, Sweden). The amount of hippocampus lipid peroxidation was

predicted as the concentration of thiobarbituric acid reactive output malondaldehyde (MDA) accordng to Yagi’s method (Zanganeh et al., 2018).

Thiobarbituric acid reacts wth MDA and is formed thiobarbituric acid reactant substances,as biomarkers of oxidative damage to polyunsaturated fatty acids.

Total antioxidant capacity (TAC) determined by Benzi and Stran method. Hppocampus TAC was measured using the ferric reducng abiity of serum which is a test shows antoxidant capacity and quantifies the abiity of serum to reduce ferric ion to ferrous ion (Benzie and Strain, 1996). Hppocampus total thol molecues (TTM) were determined using Elman's reagent (DTNB; 5,5'-dithio-bis-[2-nitrobenzoic acid])

according to the Hu method and total oxidant status (TOS) of lver samples was determined by the ferric xylenol orange 1 reagent, according to the method described by Erel, also the oxidative stress index (OSI) was calculated by dividing TOS/TAC (Kheiripour et a., 2019).

Behavioral tests:

Morris Water Maze (MWM)

The MWM was used to measure the ability of spatial learning and memory. In brief, the water maze was a circular tank (180cm in diameter, 60cm in heght, black coloured, filled to a depth of 25cm with water at 22±1°C) ocated in a room contaning a variety of visual cues. Low lght was used for illuminaton and the room was sound insuated. The pool had four quadrants with four starting lines named north (N), east (E), south (S) and west (W) and an nvisible

Plexiglas patform (10cm in diameter) centrally

located 1cm beneath the water in quadrant N. In our studies, 4-day training trials of animals were

conducted at nearly the same time and each day had three blocks with four trials (90s). If an animal did not escape within 90s, it was manually guided to the escape patform by the experimenter. There was a 20s gap between three trials on the platform and the

rest time was 5min between two consecutive blocks.

Twenty-four hours after 4th training test, the probe test was performed in whch the platform was removed from the pool and the rat was alowed to swim for 60s while we recorded the ratio of time spent in the target quadrant and the swimming speed

(Asad Begi et al., 2017)

All trias were processed

onlineby a video track tracking system. These scape latency, the time spent in the target quadrant and the times crossing the platform were used to evaluate the

animals spatial learning and memory ability

(Zarrnkalam et al., 2017).

Novel object recognition test (NORT)

The NORT is used extensvely to investigate the visuospatial memory of animals in a famiiar

environment. Twentyfourhours before the test, each of the rats was paced in an individual apparatus used for object recogntion tasks (70×50×40cm) for 20min

for acclimatization so that their exploratory behavior does not interfere with their interacton with objects.

The next day, two identical objects (round or square bowls) were paced n the box, folowing which each

rat was placedalone at the midpoint as wel as next to the front wall of the box opposite the objects. They were alowed to explore the objects for 10min and were then taken back to the cages (familiarization

phase). One hour later, one of the familiar objects was replaced with a nove object and the rats were placed once more in the apparatus with the same object and novel object for them to explore for 5mn

(testing phase). A video camera mounted 100cm

above the center of the boxwas used to montor and record the activity of rats. The discrimination rato was defined as the time spent with the novel object to

the total time spent exploring ether object. Object presentation was randomized and counterbalanced

across animals and groups. After each tral, the box and the objects were cleaned with a 75% ethanol solution in order to prevent olfactory cues from being perceived by other rats(Dong et al., 2017).

Open field test (OFT)

Motor deficits, locomotor activity and anxiety n

animas were measure by OFT. The animals were carreid to the test room in their home cages and allowed to accimate for 30min before the start of the locomotion test. The open field apparatus consisted of a clear Plexiglas box (100×100cm) with 30-cm-high

wallsand a white floor marked with a grid containing 16 squares. During a 5-min observaton period, the animas were placed in one corner of the apparatus

facing the wall. Al paths taken by the rat were

recorded with a computer controled tracking system.

The number of squares crossed with al four paws was determined from the video recordng. The open field box waswashed with a 70% ethanol before other animals were paced in it in order to prevent olfactory cues from being perceived by other rats

(Adebiyi et al., 2016).

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