scholarly journals Neuroprotective potential of Lantana trifolium ethanolic extract against ethambutol induced histological changes in the optic nerve

2017 ◽  
Vol 6 (3) ◽  
pp. 1071-1079
Author(s):  
Owembabazi Elna ◽  
Ninsiima Herbert Izo ◽  
Mario Edgar Fernandez Diaz ◽  
Echoru Isaac ◽  
Lemuel Ann Monima ◽  
...  
Keyword(s):  
Optic Nerve ◽  
Ethanolic Extract ◽  
Positive Control ◽  
Control Group ◽  
Average Weight ◽  
Male Adult ◽  
Histological Changes ◽  
Protective Potential ◽  
Group A ◽  
Group B

Ethambutol is an anti-tuberculosis drug important in treatment of multidrug resistant tuberculosis which is on a rise due to emergence of Human Immunodeficiency Virus. However, it has been associated with side effects on optic nerve histology leading to severe neuropathy. The purpose of this study was to establish the protective potential of Lantana trifolium ethanolic extract against ethambutol induced histological changes in the optic nerve. Twenty five male adult wistar rats of 110-130g average weight were used. These were divided into five groups each comprising five animals. Group A received distilled water only. Group B was treated with 100 mg/kg/day of ethambutol. Groups C, D, and E were treated with 25, 50, and 100 mg/kg/day of Trifolium Extract respectively, one hour before administering 100 mg/kg/day of ethambutol. After five weeks the optic nerves were excised, processed and stained for histological studies. It was observed that Lantana trifolium ethanolic extract had a dose dependent protective potential against ethambutol induced histological changes in the optic nerve. The histology of the optic nerve showed that the numbers of vacuoles were significantly few in group A (2.2±0.37), D (6.2±1.07), and E (5±0.71) when compared against the positive control group (37.4±1.54). Axons were mildly demyelinated in group D and E compared to group B and C. The protective potential of Latana trifolium is possibly present due to its anti-oxidative and anti-inflammatory activities. Studies to determine the exact phytochemical component and mechanism of action responsible for the neuroprotective potential of Latana trifolium should be conducted.Keywords: Ethambutol, Optic Nerve, Lantana Trifolium, Optic Neuropathy

Hepatoprotective Role of Propolis Extract to Prevent Hepatotoxic Effects of ATT in patients with Tuberculosis

2021 ◽  
Vol 15 (9) ◽  
pp. 2867-2869
Author(s):  
Asma Arshad ◽  
Saira Munawar ◽  
Rabia Sajjad Toor ◽  
Saba Saleem ◽  
Kanwal Sharif ◽  
...  
Keyword(s):  
Standard Dose ◽  
Ethanolic Extract ◽  
Control Group ◽  
Albino Rats ◽  
P Value ◽  
Average Weight ◽  
Propolis Extract ◽  
Measured Weight ◽  
Group B ◽  
Group D

Objective: The main purpose of this study is to evaluate the hepatoprotective effects of propolis in hepatocytes injury caused by ATT due to isoniazid and rifampicin. Methods: Healthy albino rats of with average weight of 200-250g were under this study. These rats dividing into main four groups, A group is taken a control group and then further into the group B, group C, and group D as group for experiments. The control group had 15 rats with measured weight, they were given distilled water. Group B had 15 rats, they were given with standard dose of rifampicin and isoniazid. Group c had 15 rats, they were also given with standard dose of rifampicin and isoniazid. Group D had 15 rats, they were given with standard dose of rifampicin and isoniazid and also extract of the propolis we prepared. Results: Serum ALT in the experimental group B with group C, group D were also found to be of statistically significant with p-value < 0.001. ALT serum level observed high in group B. Multiple comparison between groups revealed that group B with a significantly increase in the serum enzyme AST level in comparison to group A, group C and group D with p-value <0.001. Conclusion: This study showed that ethanolic extract of propolis prevents isoniazid and rifampicin induced hepatotoxicity in the albino rats. Key words; Propolis, Anti-tuberculosis treatment, Hepato-toxicity.

scholarly journals Omeprazole and misoprostol for preventing gastric mucosa effects caused by indomethacin and celecoxib in rats

2006 ◽  
Vol 21 (3) ◽  
pp. 168-176 ◽  
Author(s):  
Míriam Elias Cavallini ◽  
Nelson Adami Andreollo ◽  
Konradin Metze ◽  
Marina Raquel Araújo
Keyword(s):  
Gastric Mucosa ◽  
Microscopic Analysis ◽  
Control Group ◽  
Average Weight ◽  
Gastric Cytoprotection ◽  
Microscopic Studies ◽  
Group A ◽  
Ad Libitum ◽  
Pre Treatment ◽  
Group B

PURPOSE: To evaluate and to compare macro and microscopically the intense injuries of the gastric mucosa of rats which were caused by NSAIDS celecoxib and indomethacin and the gastric cytoprotection with omeprazole and misoprostol. METHODS: The sample is formed by one hundred and fifty Wistar rats with average weight 200 g, distributed in four groups, such as: Group A, subdivided in groups A1 and A2 - pre-treatment with omeprazole (20 mg/rat) during seven days and on the 8th day - use of NSAIDS, concerning A1 (20 rats) were given celecoxib (1mg/rat) and A2 (20 rats) were given indomethacin. The Group B, subdivided in group B1 and B2 - pre-treatment with misoprostol (20mg/rat) during seven days and on the 8th day use of NSAIDS, concerning B1 (20 rats) were given celecoxib (1 mg/ rat) and B2 (20 rats) were given indomethacin (12.5 mg/rat). The Group C: were not given cytoprotection during seven days, from the 7th to the 8th day - fast of food and water ad libitum, on the 8th day of NSAIDS use, concerning C1 (20 rats) were given celecoxib, C2 (20 rats) were given indomethacin (12.5 mg/ rat), C3 (20 rats) were given celecoxib (200mg/rato), and Group D - control group, concerning 10 rats were observed during seven days ingesting food and water ad libitum. On the 9th day, the stomachs were taken out and were macro and microscopically evaluated for the identification of the gastric injuries. RESULTS: On the macroscopic studies, the groups A2, B2 and C2 presented a remarkable high number of injuries for cm² /animal, respectively 18.55 injuries for cm² /animal, 16.25 injuries for cm² /animal and 13.55 injuries for cm²/animal. On the microscopic studies, the percentage of the injured mucosa, presented expressive difference among the groups A1, B1, C1 when compared to the groups A2, B2, C2 (p<0.0001). The average of the length/injury and the average of the depth of the injuries did not present expressive statistics differences among the groups A2, B2 and C2. The average of the edema presented expressive statistics difference among the groups A2 and D; B2 and C2 and between C2 and D (p < 0.05). CONCLUSIONS: The indomethacin on the applied concentration causes a great number of macroscopic and microscopic injuries to gastric mucosa of rats when compared to celecoxib which does not cause lesions. Omeprazole and misoprostol on the applied concentrations do not present macroscopic and microscopic effectiveness on the gastric cytoprotection when applying indomethacin. Considering the microscopic analysis of the average of the edema, the group of animals, which was given misoprostol as cytoprotection, presented a lower average compared to the group which was given omeprazole.

scholarly journals Neuroprotective Effect of Grewia carpinifolia Extract against Vanadium Induced Behavioural Impairment

2016 ◽  
Vol 60 (4) ◽  
pp. 5-13 ◽  
Author(s):  
O. E. Adebiyi ◽  
J. O. Olopade ◽  
F. O. Olayemi
Keyword(s):  
Neuroprotective Effect ◽  
Ethanolic Extract ◽  
Control Group ◽  
Protective Agent ◽  
Central Nervous System Toxicity ◽  
Sodium Metavanadate ◽  
Latent Time ◽  
Group A ◽  
Vanadium Toxicity ◽  
Group B

Abstract Vanadium (V), a heavy metal, has been reported to induce central nervous system toxicity leading to various behavioural impairments. It is characterized by the production of reactive oxygen. The present study was designed to test the possibility of Grewia carpinifolia ethanolic extract in preventing behavioural alterations following acute vanadium toxicity in mice. Twenty five Swiss albino mice (25—27 g) were completely randomized into 5 groups (A—E) of 5 animals each. Group A received distilled water and served as a control; group B, received vitamin E (500 mg.kg−1 b. w. every 72 hours), a known antioxidant orally, along with a daily dose of sodium metavanadate intraperitoneally (i. p.) for 7 days; group C and group D received Grewia carpinifolia leaf extract at 100 and 200 mg.kg−1 b.w orally respectively, along with the sodium metavanadate i. p. for 7 days; while group E received sodium metavanadate i. p. only for 7 days. The behavioural and motor functions were analysed by the open field, negative geotaxis, and hanging wire tests; the daily body and brain weights were recorded. Grewia carpinifolia ethanolic extracts significantly reduced the number of grooming, stretched attend posture, and freezing time that were significantly increased in the vanadium only group and also enhanced the vestibular functions. In addition, the latent time spent on the hanging wire in groups simultaneously administered with the extract and V compared favourably (P > 0.05) with the control groups but a decrease in latent time was observed in the V only group. The results suggest that acute V toxicity results in various behavioural deficits and support a possible role of Grewia carpinifolia as a protective agent against acute vanadium-toxicity with a better result at 200 mg.kg−1 b. w.

Silymarin and dimercaptosuccinic acid ameliorate lead-induced nephrotoxicity and genotoxicity in rats

2015 ◽  
Vol 35 (4) ◽  
pp. 398-403 ◽  
Author(s):  
Y Alcaraz-Contreras ◽  
RP Mendoza-Lozano ◽  
ER Martínez-Alcaraz ◽  
M Martínez-Alfaro ◽  
MA Gallegos-Corona ◽  
...  
Keyword(s):  
Lead Acetate ◽  
Chelating Agent ◽  
Blood Lead ◽  
Positive Control ◽  
Dimercaptosuccinic Acid ◽  
Control Group ◽  
Lead Levels ◽  
Group A ◽  
Group B ◽  
Group D

We studied the effect of silymarin and dimercaptosuccinic acid (DMSA), a chelating agent that was administered individually or in combination against lead (Pb) toxicity in rats. Wistar rats (200 ± 20) were randomly divided into five groups. Group A served as a control. Groups B–E were exposed to 2000 ppm of lead acetate in drinking water for 8 weeks. Group B served as a positive control. Group C received silymarin (100 mg kg−1 orally) for 8 weeks. Group D received DMSA (75 mg kg−1 orally) once daily for the last 5 days of treatment. Group E received DMSA and silymarin as groups C and D, respectively. The effect of Pb was evaluated and accordingly the treatments on blood lead levels (BLLs), renal system, and genotoxic effects were calculated using comet assay. The BLLs were significantly increased following the exposition of lead acetate. The administration of silymarin and DMSA provided reduction in BLLs. Silymarin and DMSA provided significant protection on the genotoxic effect of Pb. The toxic effect of Pb on kidneys was also studied. Our data suggest that silymarin and DMSA improve the renal histopathological lesions.

scholarly journals MICROSCOPIC CHANGES IN THE LIVER OF DEVELOPING RATS EXPOSED TO VALPRIOC ACID

1969 ◽  
Vol 5 (2) ◽  
pp. 685-688
Author(s):  
MUHAMMAD KHAN ◽  
INAYAT ULLAH ◽  
NAIK ZADA ◽  
MARIYA HIDAYAT
Keyword(s):  
Valproic Acid ◽  
Control Group ◽  
Central Vein ◽  
Microscopic Structure ◽  
Pregnant Rats ◽  
Histological Changes ◽  
Group A ◽  
Group B ◽  
Group D ◽  
Control Group Group

BACKGROUND: Valproic Acid (VPA) is a broad - spectrum antiepileptic drug. Its use duringpregnancy has been associated with hapatotoxicity. This study was designed to assess the effects of VPAon the Microscopic structure of the Liver of developing rats exposed to the drug during varioustrimesters of pregnancy.OBJECTIVE: to evaluate the histological changes in developing liver in rats exposed to valproic acidduring different fetal periods. To correlate the extent of liver injury during various developmentalperiods.MATERIAL AND METHODS: In this Experimental Study pregnant rats were divided in to fourgroups A, B, C and D. Group D(n=10) was kept as control group. Group A (n=10) was given VPA in adose of 500 mg/kg/day intraperito-nealy (I/P) on days 3, 4, 5 of gestation. Group B (n=10) received thesame dose I/P on days 8, 9, 10 of gestation while Group C (n=10) received the same dose I/P on days16, 17, and 18 of gestation. On day 21 rats were euthanized and liver of the fetuses were dissected outfor examination.RESULTS: The central vein was significantly dilated in all the groups. Also, there was significantincrease in the size of hepatocytes in all the groups. Moreover, significant inflammation and congestionin portal areas and congestion in sinusoids were observed in all the experimental groups.CONCLUSION: VPA use during pregnancy produces hepatotoxicity in developing rats.KEY WORDS: Valproic Acid, Developing rats, Hepatotoxicity.

scholarly journals Ameliorative Effect of the Methanol Extract of Napoleonae imperialis Leaves against Methotrexate-induced Renal Damage in Albino Rats

2020 ◽  
pp. 10-20
Author(s):  
O. J. Mba ◽  
G. S. Aloh ◽  
E. N. Uhuo
Keyword(s):  
Normal Control ◽  
Renal Damage ◽  
Biochemical Analysis ◽  
Methanol Extract ◽  
Positive Control ◽  
Control Group ◽  
Albino Rats ◽  
Ameliorative Effect ◽  
Group A ◽  
Group B

Aim: This study was aimed to evaluate the effect of methanol extract of Napoleonae imperialis leaves against methotrexate renal damage in albino rats. Methodology: Thirty (30) male albino rats of mean weight 130 g were used for this study. The animals for the study were grouped into five (5) of six (6) rats each. Group A (normal control) received feed and water only and Group B (positive control) was induced with methotrexate without treatment. Test groups (C and D) were orally given 250 mg and 500 mg/kg b.wt of leaves extract, and group E was orally given the extract only (500 mg/kg b.wt) respectively for 14 days. All the rats used in this study were initially subjected to renal damage using 0.5 ml/kg of methotrexate except the normal control group. The rats were sacrificed after 14 days and the blood samples were collected for biochemical analysis, Results: From the result obtained, there was a significant (p< 0.05) decrease in the groups that received 250 mg/kg and 500 mg/kg b.wt of the plant extract in (Urea, Creatinine and Na+), and a significant increase (p< 0.05) in K+ and Cl-. Also there was a significant (p< 0.05) decrease in (Urea, Creatinine, and Na+) in comparison with the control groups and the group that received the extract only (500 mg/kg b.wt), and a significant increase (p< 0.05) in (K+ and Na+). Conclusion: The study indicates that the methanol extract of Napoleonae imperialis leaves may have exerted renal functioning effects in albino rats, and may also be used pharmacologically in the management of organ toxicity.

scholarly journals Role of oligodendrocytes in reversing ethambutol induced optic neuropathy

2020 ◽  
Vol 9 (1) ◽  
pp. 1681-1685
Author(s):  
Elna Owembabazi ◽  
Ronald Ahumuza ◽  
Ochieng John Juma ◽  
Isaac Buzinde ◽  
Ibrahim Ssengendo ◽  
...  
Keyword(s):  
Optic Nerve ◽  
Optic Neuropathy ◽  
Vision Loss ◽  
Control Group ◽  
Average Weight ◽  
First Line ◽  
Male Adult ◽  
Myelin Sheaths ◽  
Significant Difference

Ethambutol is one of the first line drugs for treating tuberculosis. Its toxic effects on the optic nerve are majorly classified as reversible. However, worsening of vision and permanent vision loss after ethambutol discontinuation is also documented. To determine the effect of ethambutol toxicity on oligodendrocytes at different periods of treatment. Twenty-five male adult wistar rats of 110-130g average weight were housed in cages, exposed to 12-hour of dark and light cycles. After one week of acclimatization, five animals were randomly selected and sacrificed prior to ethambutol treatment for the control group (week 0). The remaining 20 animals were each orally administered 100mg/kg/day ethambutol. Five animals were randomly picked and sacrificed at the end of first, second, third, and fourth week of ethambutol treatment. There was no statistically significant difference in the number of oligodendrocyte cells obtained at the different stages of ethambutol treatment. Oligodendrocytes are not vulnerable to ethambutol toxicity for at least one month and they play a key role in reversing ethambutol induced neuropathy through myelin sheaths reconstruction. Key Words: Ethambutol, Oligodendrocytes, Optic Nerve, Optic Neuropathy.

scholarly journals Evaluation and Comparison of the Effectiveness of Physical Methods of Disinfection on Heat-Polymerized Polymethyl Methacrylate – An In-vitro Study

2021 ◽  
pp. 285-293
Author(s):  
Kapil Soni ◽  
Vivek Choukse ◽  
Rajeev Shrivastava ◽  
Umesh Palekar ◽  
Prabha Shakya Newaskar ◽  
...  
Keyword(s):  
Candida Albicans ◽  
Microwave Irradiation ◽  
Uv Radiation ◽  
Acrylic Resin ◽  
Positive Control ◽  
Mean Value ◽  
Control Group ◽  
Group A ◽  
The Mean ◽  
Group B

Introduction: The common relationship of Candida and the ample proof that acrylic resin dentures are related to denture stomatitis in the oral cavity, which can range from simple mucosal lesions to a fatal systemic form. The current study aims to assess and compare the efficacy of microwave irradiation and UV radiation in the disinfection of Candida albicans infection in heat-polymerized polymethyl methacrylate. Materials and Methods: A total of 90 specimens were prepared with heat-polymerized acrylic resin, out of which 30 were used for Microwave irradiation, and 30 were used for UV irradiation, and 30 were used for positive control. There were three groups: Group A (Positive Control group); Group B (Microwave irradiation); Group C (UV radiation). After preparing the samples they were chemically sterilized, then infected with C. Albicans, and again Group B is disinfected with Microwave irradiation, Group C is disinfected by UV light and Group A is kept as Positive control without disinfection. Turbidity was measured for each group after re-infection of every specimen in CFU/ml. Results: In the present study, the CFU/ml of Candida albicans in the control group was 2.97x107±0.6 x 107 (P= .000), for microwave irradiation, the mean value was 5.3±11.1 (P= .000), and for UV radiation, the mean value was 19.3±22.9 (P= .003). Conclusion: According to the results of the current study, microwave irradiation (6 minutes at 650W) is more effective than UV radiation (10 minutes each side at 254nm wavelength) of Candida albicans infection on the heat-polymerized acrylic resin in laboratory conditions.

scholarly journals Ameliorating Effects of Omega-3 Fatty Acids on Underlying Mechanisms of Type 2 Diabetes

2020 ◽  
pp. 1-7
Author(s):  
Abroo Fatima Qazi ◽  
Din Muhammad Shaikh
Keyword(s):  
Fatty Acids ◽  
Wistar Rats ◽  
Positive Control ◽  
Control Group ◽  
P Value ◽  
Omega 3 Fatty Acids ◽  
Omega 3 ◽  
Group A ◽  
Group B

Aims: The current study investigated the effects of polyunsaturated Omega-3-fatty acids on underlying mechanism linked with diabetes in streptozocin induced type 2 diabetic Wistar rats. Study Design:  Experimental analytical Study. Place and Duration of Study: The study was conducted at Isra University Hyderabad and Sindh Agricultural University, Tandojam between November 2016 and November 2018. Methodology: Seventy-five Wistar rats were assorted to five groups (15 rats per group): negative control group A and positive control group B and experimental groups C, D and E. Rats within group B,C,D, and E were injected with streptozocin (65 mg/kg body weight) to induce diabetes. Experimental groups C, D and E received Omega-3-fatty acid supplemented food in 0.3 g, 0.4 g and 0.5 g/kg bodyweight dosage for 12 weeks, respectively. Results: Omega-3-fatty acids treated rats showed significant decrease in blood glucose level and rise in serum insulin as compared to positive control group (p-value = 0.001). At the same time, they showed significantly increased expression of insulin gene along with transcription factors: PDX1 and NKX6.1 as compared to group A (p-value = 0.001). Conclusion: It is concluded that O3FAs reduces insulin resistance in Streptozocin-induced diabetic Wistar rats by modulating the transcription factors essential for insulin gene expression.

scholarly journals Zeolite as a Bone Bio-Modifier Carrier: An In-Vitro Study

2019 ◽  
Vol 9 (1) ◽  
pp. 126
Author(s):  
Mobina Mousavi ◽  
Azadeh Esmaeil Nejad ◽  
Erfan Shamsoddin ◽  
Mohammad Mehdi Golabgiran ◽  
Behzad Houshmand
Keyword(s):  
In Vitro Study ◽  
Positive Control ◽  
Negative Control ◽  
Control Group ◽  
Alizarin Red ◽  
Group A ◽  
Group B ◽  
And Function ◽  
Group D

Background: Zeolite is a microporous aluminosilicate compound which has been successfully used in tissue engineering. The effects of Zeolite on the morphology and functions of pre-osteoblastic MG-63 cells as new bone enhancer material is still unclear. Methods: In this vitro experimental study, MTT and Alizarin red staining test were performed on six groups of MG-63 cells which differed in Zeolite (Z) concentration and the presence or absence of Alloplast extract (A). Group A: 0.1&mu;g/mL Z+A, Group B: 0.1&mu;g/mL Z without A, Group C: 0.2&mu;g/mL Z+A, Group D: 0.2&mu;g/mL Z without A, Group E: 0.3&mu;g/mL Z+A, Group F: 0.3&mu;g/mL Z without A. There were also three control groups as positive control, negative control, and Alloplast control based on each related test. The data were analyzed by SPSS 20 via one-way ANOVA and Welch test. (P&lt;0.05). Results: At 24 hours, results showed that solutions with 0.1&mu;g/mL, 0.2&mu;g/mL, and 0.3&mu;g/mL Zeolite with or without Alloplast had significantly higher proliferation rates than positive control (distilled water) groups without Alloplast (p&lt;0.001). At 72hours time point, the results showed significantly higher proliferation rates in the solutions with 0.1&mu;g/mL, 0.2&mu;g/mL, and 0.3&mu;g/mL Zeolite with or without Alloplast compared to the positive control group without Alloplast (p&lt;0.001). Conclusions: Zeolite can increase proliferation of MG-63 cells without presence of Alloplast; It seems that combination of Zeolite with Alloplast maybe enhancing proliferation and function of MG-63 cells.

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