scholarly journals Neuroprotective effect of Centella asiatica extract (CAE) on experimentally induced parkinsonism in aged Sprague-Dawley rats

2010 ◽  
Vol 35 (1) ◽  
pp. 41-47 ◽  
Author(s):  
Nagaraja Haleagrahara ◽  
Kumar Ponnusamy
Keyword(s):  
Neuroprotective Effect ◽  
Centella Asiatica ◽  
Sprague Dawley ◽  
Sprague Dawley Rats ◽  
Experimentally Induced

EFFECT OF EXPERIMENTALLY INDUCED THYROIDITIS ON BIOSYNTHESIS OF THYROXINE IN RATS

1969 ◽  
Vol 62 (1) ◽  
pp. 11-20 ◽  
Author(s):  
Colum A. Gorman ◽  
James W. Anderson ◽  
Eunice V. Flock ◽  
Charles A. Owen ◽  
Khalil G. Wakim
Keyword(s):  
Intravenous Administration ◽  
Hashimoto's Thyroiditis ◽  
Sprague Dawley ◽  
Thyroid Extract ◽  
Histologic Appearance ◽  
Gland Weight ◽  
Sprague Dawley Rats ◽  
Thyroid Glands ◽  
And Control ◽  
Experimentally Induced

ABSTRACT Thyroiditis was induced in Sprague-Dawley rats by repeated immunization with thyroid extract and Freund's adjuvant. Immunized and control animals were killed at intervals up to 6 hours after intravenous administration of 131I as iodide at 5, 8 and 10 weeks after the first injection. Radioiodinated compounds in the thyroid glands were identified chromatographically. Evidence of moderate thyroiditis was present (histologic appearance, gland weight, and protein-bound iodine-butanol-extractable iodine difference) but the rate of incorporation of radioiodide into thyroxine, the percentage of radioactivity in the gland as iodide, and the MIT/DIT ratio were not significantly different in immunized and control animals. The MIT/DIT ratio was found to vary with time after 131I administration in both immunized and control animals. These studies did not uncover a defect in organification of iodide in experimental thyroiditis similar to that described by others in humans with Hashimoto's thyroiditis.

Curcumin Reduces Neuroinflammation and Improves the Impairments of Anesthetics on Learning and Memory by Regulating the Expression of miR-181a-5p

2021 ◽  
pp. 1-9
Author(s):  
Guizhen Liu ◽  
Yuchuan Sun ◽  
Fei Liu
Keyword(s):  
Cognitive Impairment ◽  
Protective Effect ◽  
Learning And Memory ◽  
Cognitive Dysfunction ◽  
Inflammatory Cytokines ◽  
Neuroprotective Effect ◽  
Morris Water Maze Test ◽  
Sprague Dawley ◽  
Protein Levels ◽  
Sprague Dawley Rats

<b><i>Objective:</i></b> The purpose of this study was to explore the role of curcumin (Cur) in isoflurane (ISO)-induced learning and memory dysfunction in Sprague-Dawley rats and further elucidate the mechanism of the protective effect produced by Cur. <b><i>Methods:</i></b> Rat models of cognitive impairment were established by inhaling 3% ISO. The Morris water maze test was used to assess the cognitive function of rats. ELISA and qRT-PCR were used to analyze the protein levels of pro-inflammatory cytokines and expression levels of miR-181a-5p, respectively. <b><i>Results:</i></b> Cur significantly improved the ISO-induced cognitive dysfunction in rats and alleviated the ISO-induced neuroinflammation. miR-181a-5p was overexpressed in ISO-induced rats, while Cur treatment significantly reduced the expression of miR-181a-5p. Overexpression of miR-181a-5p promoted the cognitive impairment and the release of inflammatory cytokines and reversed the neuroprotective effect of Cur. <b><i>Conclusion:</i></b> Cur has a protective effect on ISO-induced cognitive dysfunction, which may be achieved by regulating the expression of miR-181a-5p.

scholarly journals Effect of Ranirestat, a New Aldose Reductase Inhibitor, on Diabetic Retinopathy in SDT Rats

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Fumihiko Toyoda ◽  
Yoshiaki Tanaka ◽  
Ayumi Ota ◽  
Machiko Shimmura ◽  
Nozomi Kinoshita ◽  
...  
Keyword(s):  
Diabetic Retinopathy ◽  
Aldose Reductase ◽  
Reductase Inhibitor ◽  
Retinal Thickness ◽  
Neuroprotective Effect ◽  
Treated Group ◽  
Aldose Reductase Inhibitor ◽  
Untreated Group ◽  
Sprague Dawley ◽  
Sprague Dawley Rats

Purpose. To evaluate the effect of ranirestat, a new aldose reductase inhibitor (ARI), on diabetic retinopathy (DR) in Spontaneously Diabetic Torii (SDT) rats.Methods. The animals were divided into six groups, normal Sprague-Dawley rats(n=8), untreated SDT rats(n=9), ranirestat-treated SDT rats (0.1, 1.0, and 10 mg/kg/day,n=7, 8, and 6, resp.), and epalrestat-treated SDT rats (100 mg/kg/day,n=7). Treated rats received oral ranirestat or epalrestat once daily for 40 weeks after the onset of diabetes. After the eyes were enucleated, the retinal thickness and the area of stained glial fibrillary acidic protein (GFAP) were measured.Results. The retinas in the untreated group were significantly thicker than those in the normal and ranirestat-treated (0.1, 1.0, and 10 mg/kg/day) groups. The immunostained area of GFAP in the untreated group was significantly larger than that in the normal and ranirestat-treated (1.0 and 10 mg/kg/day) groups. There were no significant differences between the untreated group and epalrestat-treated group in the retinal thickness and the area of stained GFAP.Conclusion. Ranirestat reduced the retinal thickness and the area of stained GFAP in SDT rats and might suppress DR and have a neuroprotective effect on diabetic retinas.

scholarly journals THE COMBINATION INFUSION OF Talinum paniculatum (Jacq.) Gaertn., Centella asiatica (L.) Urb. AND Curcuma xanthorrhiza Roxb. EFFECTS ON TESTOSTERONE LEVELS AND INTRODUCTION, CLIMBING AND COITUS FREQUENCIES IN MALE SPRAGUE-DAWLEY RATS

2019 ◽  
Vol 12 (1) ◽  
pp. 33-40
Author(s):  
Nuning Rahmawati ◽  
Ika Yanti Marfuatush Sholikhah
Keyword(s):  
Treatment Group ◽  
Antibacterial Effect ◽  
Centella Asiatica ◽  
Control Group ◽  
Sprague Dawley ◽  
Pharmacological Activities ◽  
Testosterone Levels ◽  
Sd Rats ◽  
Sprague Dawley Rats ◽  
Curcuma Xanthorrhiza

ABSTRACT Talinum paniculatum (som Java) reported to have many pharmacological activities such as increasing spermatozoa quality, cell regenerations, fertility, and antibacterial effect both empirically and scientifically. This study aimed to prove the combination infusion effects of som Java, gotu kola, and temulawak on introduction, climbing, and coitus levels as well as testosterone levels in male Sprague Dawley (SD) rats. SD rats were divided into 2 groups, control group received aquadest, treatment group received formula a mixture of som java Talinum paniculatum) root, gotu kola (Centella asiatica) herb, and Javanese turmeric (Curcuma xanthorrhiza) rhizome with the dose of 491,2 mg/200 g BW for 7 consecutive days. Artificial estrus of female SD rats were induced by administering estradiol valerat 2 mg/200 g BW 48 hours before observation. The determined parameters were levels of testosterone as well as introduction, climbing and coitus frequencies. Administration of estradiol valerat led to artificial estrus induction of female SD rats. The administration of the combination infusion dose 491.2 mg/200 g BW significantly increased testosterone level as well as introduction and climbing frequencies of male SD rats as of 27.77%; 86.39% and 69.17% respectively. ABSTRAK Som jawa (Talinum paniculatum) secara empiris dan ilmiah terbukti telah banyak dimanfaatkan oleh masyarakat untuk mengatasi berbagai masalah kesehatan diantaranya untuk meningkatkan kualitas dan kuantitas spermatozoa, regenerasi sel, fertilitas, dan sebagai antibakteri. Penelitian ini dilakukan untuk membuktikan efek peningkatan kadar hormon testosteron serta frekuensi introduction, climbing, dan coitus tikus jantan SD dari pengaruh infusa kombinasi som jawa, pegagan, dan temulawak. Hewan uji tikus galur SD dibagi menjadi 2 kelompok, yaitu kelompok kontrol diberikan akuades, sedangkan kelompok perlakuan diberikan infusa ramuan akar som jawa, herba pegagan, dan rimpang temulawak dosis 491,2 mg/200 g bb selama 7 hari berturut-turut. Induksi estrus artifisial tikus betina dengan pemberian estradiol valerat 2 mg/200 g bb dilakukan 48 jam sebelum pengamatan. Parameter yang diukur meliputi kadar testosterone, frekuensi introduction, climbing, dan coitus. Dibandingkan dengan kelompok kontrol, pemberian infusa ramuan tidak berefek pada frekunsi coitus, namun mampu meningkatkan kadar testosteron serta frekuensi introduction dan climbing tikus jantan sebesar 27,77; 86,39 dan 69,17%.          

Masseter response to long-term experimentally induced anterior crossbite in Sprague-Dawley rats

2021 ◽  
Vol 122 ◽  
pp. 104985
Author(s):  
Hong-Yun Zhang ◽  
Jing Duan ◽  
Jing Wang ◽  
Mian-Jiao Xie ◽  
Qian Liu ◽  
...  
Keyword(s):  
Sprague Dawley ◽  
Sprague Dawley Rats ◽  
Experimentally Induced

scholarly journals Inhibitory Effects of Raw-Extract Centella asiatica (RECA) on Acetylcholinesterase, Inflammations, and Oxidative Stress Activities via In Vitro and In Vivo

Molecules ◽  
2020 ◽  
Vol 25 (4) ◽  
pp. 892 ◽  
Author(s):  
Zetty Zulikha Hafiz ◽  
Muhammad ‘Afif Mohd Amin ◽  
Richard Muhammad Johari James ◽  
Lay Kek Teh ◽  
Mohd Zaki Salleh ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Centella Asiatica ◽  
Raw 264.7 Cells ◽  
Dependent Manner ◽  
Sprague Dawley ◽  
Concentration Dependent Manner ◽  
Sprague Dawley Rats ◽  
And Oxidative Stress

Centella asiatica (C. asiatica) is one of the medicinal plants that has been reported to exert comprehensive neuroprotection in vitro and in vivo. In view of this, the present study was performed to investigate the effect of ethanolic extract of C. asiatica, designated as raw-extract of C. asiatica (RECA) in reducing the acetylcholinesterase (AChE), inflammations, and oxidative stress activities via both in vitro (SH-SY5Y and RAW 264.7 cells) and in vivo (Sprague Dawley rats). Quantitative high-performance liquid chromatography analysis reveals that RECA contains a significantly high proportion of glycosides than the aglycones with madecassoside as the highest component, followed by asiaticoside. Treatment of SH-SY5Y cells with RECA significantly reduced the AChE activity in a concentration-dependent manner with an IC50 value of 31.09 ± 10.07 µg/mL. Furthermore, the anti-inflammatory and antioxidant effects of RECA were evaluated by lipopolysaccharides (LPS)-stimulated RAW 264.7 cells. Our results elucidated that treatment with RECA significantly suppressed the level of pro-inflammatory cytokine/mediators and oxidative stress released in a concentration-dependent manner. Interestingly, these patterns of inhibition were consistent as observed in the LPS-induced neuroinflammation Sprague Dawley rats’ model. The highest concentration used in the two models presented the most significant results. Herein, our findings strongly suggest that RECA may offer therapeutic potential for the treatment of Alzheimer’s disease through inhibiting the AChE, inflammation, and oxidative stress activities.

Hyaluronic acid scaffold has a neuroprotective effect in hemisection spinal cord injury

2016 ◽  
Vol 25 (1) ◽  
pp. 114-124 ◽  
Author(s):  
Sergiy V. Kushchayev ◽  
Morgan B. Giers ◽  
Doris Hom Eng ◽  
Nikolay L. Martirosyan ◽  
Jennifer M. Eschbacher ◽  
...  
Keyword(s):  
Spinal Cord ◽  
Spinal Cord Injury ◽  
Neuroprotective Effect ◽  
Scar Tissue ◽  
Treated Group ◽  
Secondary Injury ◽  
Sprague Dawley ◽  
Sprague Dawley Rats ◽  
Cord Injury ◽  
Behavioral Assessments

OBJECTIVE Spinal cord injury occurs in 2 phases. The initial trauma is followed by inflammation that leads to fibrous scar tissue, glial scarring, and cavity formation. Scarring causes further axon death around and above the injury. A reduction in secondary injury could lead to functional improvement. In this study, hyaluronic acid (HA) hydrogels were implanted into the gap formed in the hemisected spinal cord of Sprague-Dawley rats in an attempt to attenuate damage and regenerate tissue. METHODS A T-10 hemisection spinal cord injury was created in adult male Sprague-Dawley rats; the rats were assigned to a sham, control (phosphate-buffered saline), or HA hydrogel–treated group. One cohort of 23 animals was followed for 12 weeks and underwent weekly behavioral assessments. At 12 weeks, retrograde tracing was performed by injecting Fluoro-Gold in the left L-2 gray matter. At 14 weeks, the animals were killed. The volume of the lesion and the number of cells labeled from retrograde tracing were calculated. Animals in a separate cohort were killed at 8 or 16 weeks and perfused for immunohistochemical analysis and transmission electron microscopy. Samples were stained using H & E, neurofilament stain (neurons and axons), silver stain (disrupted axons), glial fibrillary acidic protein stain (astrocytes), and Iba1 stain (mononuclear cells). RESULTS The lesions were significantly smaller in size and there were more retrograde-labeled cells in the red nuclei of the HA hydrogel–treated rats than in those of the controls; however, the behavioral assessments revealed no differences between the groups. The immunohistochemical analyses revealed decreased fibrous scarring and increased retention of organized intact axonal tissue in the HA hydrogel–treated group. There was a decreased presence of inflammatory cells in the HA hydrogel–treated group. No axonal or neuronal regeneration was observed. CONCLUSIONS The results of these experiments show that HA hydrogel had a neuroprotective effect on the spinal cord by decreasing the magnitude of secondary injury after a lacerating spinal cord injury. Although regeneration and behavioral improvement were not observed, the reduction in disorganized scar tissue and the retention of neurons near and above the lesion are important for future regenerative efforts. In addition, this gel would be useful as the base substrate in the development of a more complex scaffold.

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