Effect of Visual Experience on Spatial Learning of Rats

Background: Visual information acquired through observation plays a pivotal role in learning a movement pattern and motor control. Objectives: This study aimed to analyze the effect of visual deprivation on learning in rats. Methods: The study sample consisted of 12 male rats, divided into three groups. Group I consisted of four rats and was considered the control group. Transection of the two optic nerves was performed on rats of group II on the seventh day after birth and group III on the seventh week after birth to develop the early blind and late blind models, respectively. A T-shaped maze device was utilized to evaluate the learning behavior of rats. Rats of groups II and III were blinded by the optic nerve surgery. In total, 20 trials per day were conducted for nine consecutive days, in which the time and number of correct arm entries were recorded. The ANOVA and Kruskal-Wallis tests were employed to analyze the results in SPSS software (version 16.0). A p-value of less than 0.05 was considered statistically significant. Results: There was a significant difference between the three groups regarding the number of correct arm entries on days one, three, and seven (P<0.05). There was also a significant difference between the three groups regarding how long it took them to enter the target box on days two and three (P<0.05). Group III had a lower number of entries to the target box and it took them a significantly longer time to enter the target box, compared to the other groups. Conclusion: According to the results, visual deprivation may affect the learning of rats during the early days; however, their learning levels increased over the following days. Moreover, the early blinded rats had a higher level of learning than the lately blinded adult rats and the same level of learning as that of the sighted adult rats.

2021 ◽  
pp. 39-45
Author(s):  
Nura I. Al-Zail ◽  
Salah F. Kamies

Pyrethroid cyhalothrin (PC) is an insecticide that is used worldwide for pest control in agriculture and household use. Samoa extract (SE) is a potent antioxidant protecting cells from oxidative stress. The present study investigates the protective and therapeutic effect of SE on PC-induced changes in sperm quality in male rats. Fifty adult male albino rats were divided into five groups: group I: served as control; group II: received PC i.p. only (6.2 mg/kg b.wt.); group III: received SE only (100 mg/kg b.wt., p.o.) for eight weeks; group IV: received SE as a protective agent daily for eight weeks, then followed by the administration of PC (i.p.) three times a week for two weeks; group V: exposed to PC (i.p.) three times a week for two weeks, then treated with the SE daily for 8 weeks. Results showed that PC caused markedly impaired sperm quality (a count, viability, motility, and abnormality). Compared to PC-treated animals, SE in the protective group markedly restored the alteration of sperm indices. However, SE in the curative group was found to be less effective in restoring PC-induced alterations. In conclusion, the data of this study revealed that the SE as a protective agent is more effective than as a therapeutic agent. Keywords: Samoa; Pyrethroid; Sperm quality; Rat


QJM ◽  
2021 ◽  
Vol 114 (Supplement_1) ◽  
Author(s):  
Eman Gomaa El Saeed ◽  
Manal H Moussa ◽  
Gehad A Hammouda ◽  
Sahar M. M Omar

Abstract Background Repairing urinary bladder (UB) defect by enterocystoplasty remains the gold standard surgical bladder reconstruction procedure to increase the capacity and compliance of dysfunctional bladders. However, many complications were recorded. Aim of the work This work aimed to compare the consequences of reconstruction of urinary bladder defect using untreated small intestinal submucosal (SIS) matrix versus seeded and unseeded decellularized SIS matrix. Material and Methods Fifty female albino rats were used in this study. The animals were divided into three groups: Group I (Control) included ten adult rats from which ileal tissue was obtained. Group II included ten adult rats in which their UB defect was repaired by untreated cellular SIS. Group III included twenty adult rats that were subdivided into two subgroups, 10 rats each; Subgroup IIIA where rats had their UB defect repaired by acellular SIS and subgroup IIIb where rats had their UB defect repaired by acellular SIS seeded with adipose mesenchymal stem cells (AMSCs).Ten young rats were used for preparation of AMSCs. Morphometric and statistical analysis were also performed. Results In rats where UB defect was repaired by untreated cellular SIS, the graft area showed loss of epithelial polarity, presence of intraepithelial cysts and occasional extension of urothelium to the outer surface forming fistula. There were areas of metaplasia with the appearance PAS positive cells. In the lamina propria, there was areas of lymphocytic infiltration together with significant increase in the collagen fiber deposition (p &lt; 0.05). There was a significant decrease thickness of muscle layer as compared to control (p &lt; 0.05). In rats where UB defect was repaired by acellular SIS, urothelium in the graft area showed occasional squamous metaplasia and often the urothelium extended to the deeper layers forming Brunn's nest. There was minimal muscle regeneration in the graft area. However, in rats where UB defect was repaired by acellular SIS seeded with AMSCs, the urothelium in the graft area was nearly similar to control group with uniform urothelium thickness, minimal collagen fibers deposition and thick muscle layer that showed no significant difference from the control (p &gt; 0.05). Conclusion Acellular SIS seeded with AMSCs showed better results compared to non-seeded and cellular SIS in reconstructing urinary bladder defects.


Author(s):  
Krishna Mohan Kumar

Objective This study aimed to evaluate the impact of the dietary supplement of Moringa oleifera leaves (MOL) on semen quality and characteristics in rabbits. Methods Eighteen (n=18) breeding bucks of New Zealand white, of similar age group, were used for the study. Three feeding regimes, (i) 100% commercial rabbit pellets (CRP)-Group I (ii) 90% CRP + 10% fresh MOL on a dry matter (DM) basis – Group II and (iii) 80% CRP + 20% fresh MOL on a DM basis – Group III, were adopted and the trial continued for 21 days. After adaptation to the diet, semen was collected from each buck and subjected to evaluation using a computer-assisted semen analyser. Results In Group III, the sperm count, normal sperm morphology, and sperm motility increased (52.0%) in comparison with the control (Group I; 50.1%). The inclusion of 20% Moringa oliefera in the diet (Group III) caused a significant increase (P<0.05) in semen concentration (Control =136.2 M/mL; Group III=297.2 M/mL). There was no significant difference (P>0.05) in sperm motility and semen volume among the groups. Conclusion The results suggest that supplementing commercial rabbit pellets with 20% fresh Moringa oliefera leaves on a DM basis can improve the quality and characteristics of semen in breeding bucks.


2019 ◽  
Vol 41 (4) ◽  
Author(s):  
Hoang Nghia Son

This study aimed to evaluate the effects of nano mineral-supplemented diet on sow productivity. The data were estimated by several parameters consisting of piglet live ratio at newborn stage and weaning stage, piglet weight at newborn stage and weaning stage, metal content in piglet livers. The results showed that live ratio of newborn piglets in group III was highest (93.44 ± 2.83%) comparing with other groups. However, there was no significant difference of live ratio in piglets at weaning stage between nano mineral-supplemented groups with control. The birth weight of piglets in nano mineral-supplemented groups was similar to control group. The birth weight of piglets in nano mineral-supplemented groups was ranged from 1,361.61 ± 47.37 grams (group II) to 1,410.48 ± 44.28 grams (group I). However, the average weight of weaned pigs in groups III and IV was higher than other groups (6,772.92 ± 105.47 grams and 6,818.87 ± 89.59 grams). Moreover, the amount of Fe, Cu, Zn, Mn in piglet liver from nano mineral-supplemented groups have been found to be lower than those in control group. These results revealed that the supplement of nano minerals for sows promoted the reproductive performance of sows and reduced mineral content in the liver of piglets. 


2021 ◽  
Vol 15 (11) ◽  
pp. 2956-2957
Author(s):  
Gul Afshan ◽  
Ponum Mirani ◽  
Imtiaz Aslam ◽  
Sobia Ibrahim

Aim: Effects of available weight reducing drugs on the weights of a normal albino mice. Methodology: In this study, total 39 adult albino mice were used and were divided in three groups containing 13 animals in each. Group I served as control and was given 1 ml of distilled water once a day for 8 weeks. Group II and Group III served as experimental group and mice in these groups were given 0.5 mg of Slim Smart and Ultra Slim Plus drugs dissolved in 1 ml of distilled water respectively once a day for 8 weeks. To support these results weights of kidneys were also measured and relative tissue width index was calculated and compared with control group. Results: The weight of the animals increased in the experimental groups as compared to the control group. The overall difference for final weight among three groups was highly significant with p-value <0.01. When final weight compared group wise, the experimental groups had significantly higher weight as compared to control with p-values <0.01and 0.028 Conclusion: Both Ultra Slim Plus and Slim Smart drugs cause weight to increase in the individuals who are not obese and have BMI in normal range Keywords: Weight loss, Garcinia Cambodia, kidney, Albino mice


QJM ◽  
2020 ◽  
Vol 113 (Supplement_1) ◽  
Author(s):  
M E Nasser ◽  
S M Shawky ◽  
E A M Sanad

Abstract Background The biology of claudins is a rapidly evolving field, and many intriguing questions remain unanswered. Although it had been assumed that the reason there are ≥24 isoforms of claudin is that each one has distinct permeability properties. The nephron displays a wide spectrum of claudins, whose distribution varies in each tubular segment. In diabetic nephropathy and glomerulonephritis the gene expression of claudin-1, is markedly upregulated in the podocyte, accompanied by a tighter filtration slit diaphragm (cell-cell junction made by the glomerular podocytes) and the appearance of TJ-like structures between the foot processes causing further podocytes injury and proteinuria. Aim of the work to assess urinary claudin -1 level as a marker of podocyte injury in patients with proteinuria. Patients and Methods it is a case control study which was conducted upon 90 subjects who were divided into three groups: group I included 30 patients with type II DM, group II included 30 patients with glomerulonephritis and group III had 30 healthy subjects as controls. Urinary claudin-1 level was measured by Enzyme linked Immunosorbent Assay (ELISA) Results In this study, we found that urinary claudin-1 level was significantly higher in diabetics group and GN group than in control group. In comparison between GN group and diabetic group, we found that urinary claudin-1 level was higher in GN group than in diabetics group but with no statistically significant difference between the two groups. Conclusion urinary claudin-1 level was significantly higher in diabetics and GN group and has positive correlation with uACR. So it can be used as marker of podocytes injury and proteinuria


2009 ◽  
Vol 2 ◽  
pp. CMENT.S2565
Author(s):  
Amr A El Badry ◽  
Ismail Elmofty ◽  
Amira Helmy

This work assess serum levels of soluble Fas form (sFas) in patients with different stages of laryngeal squamous cell carcinoma(LSCC) to investigate its prognostic significance. We correlate its levels with the morphological changes of peripheral blood cells via buffy coat examinatin. The study population included 70 patients clinically diagnosed and pathohistologically confirmed LSCC in addition to 20 healthy controls. According to TNM classification 33(47.1%) patients were in stage I (group I) and 24(34.3%) in stage II (group II), 13(18.5%) in stage III (group III). The results revealed that the mean serum level of sFas (pg/ml) in the control group was 51.2, in group I was 66.33, in group II was 81.33 and in group III was 112.45. Statistical analysis of the mean of sFas by ELISA test in the patients' groups in comparison to the control revealed a significant increase of both group II and III in comparison to the control group (P < 0.01) but there was no significant difference (P > 0.05) between group I in comparison to either the control or group II. There was a significant difference (P < 0.05) between group I in comparison to group III. LM examination revealed massive extent of the apoptotic cells in group III when compared to both group I and group II. EM examination of the buffy coat revealed apoptotic changes, mainly in the peripheral blood mononuclear cells (PBMNCs), represented by surface membrane ruffles and blebs with clumped nuclear chromatin and vacuolated cytoplasm. In conclusion, this study may help us to better understand one of the escape mechanisms in cancer larynx. This mechanism is represented by the significant increase in both the serum level of sFas and the morphological apoptotic changes that detected in PBMNCs. Soluble Fas may contribute to the progression of laryngeal cancer. It can be used as an attractive target for anticancer therapy and may be considered as a marker of disease progression and poor prognosis in laryngeal cancer.


2018 ◽  
Vol 2 (2) ◽  
pp. 46
Author(s):  
Nur Akbari ◽  
Oce Wiriawan ◽  
Nining Widyah Kusnanik

This study was conducted at 45 students of SMAN 1 Cerme with aged between 15-16 years old. Students were  divided into 3 groups. the type of research used quantitative with quasi-experimental approach. Instruments of this study were test of leg strength and leg power using Leg Dynamometer and  Jump MD. The research design used matching only design. Data was anlyzed using ANOVA. The results of the  research was found that training program side hop over  barrier with dumbell and hexagon with  dumbbell significantly increase at leg strength and leg power (Sig. 0.000 <α = 0.05). Group I, Group II and Group III had significant difference (Sig. 0.000 α = 0.005). Percentage increase in leg strength group 1 of 1,80% and leg  power of 15,49%. Percentage increase in leg strength group II of  1,68% and a power of 14,27% and whereas in the control group increase in leg strength was 1.67% power at 12.32%.It can be concluded that There was an increase in leg strength and leg power in each group after the training was given. In addition, there were differences among the three groups effects seen improved in leg strength and leg power through ANOVA, where the training side hop over barrier with dumbbell and hexagon with dumbell had increased in leg strength and leg   power. But side hop over barrier with dumbbell had more significant increased than hexagon with dumbbell. Key words: Side hop over with barrier dumbell,  hexagon with dumbell, leg strength and leg power.


2021 ◽  
Vol 9 (Spl-2-ICOPMES_2020) ◽  
pp. S274-S279
Author(s):  
Aliyah . ◽  
◽  
Ratna Dwi Pujiarti Rahman ◽  
Elly Wahyudin ◽  
Rifka Nurul Utami ◽  
...  

Honey has been used as food and medicine for thousands of years. The purpose of this study was to determine the effect of honey in restoring the levels of electrolytes and blood glucose after performing physical exercises. The effect of honey consumption on electrolyte and blood glucose levels was examined on12 healthy male subjects, which were divided into 4 groups with three members in each group. Group I was treated as control and provided only 250 ml of mineral water after exercise, while group II was provided 250 ml commercial isotonic beverage, group III provided honey solution 1 (15 ml honey/250 ml water), and group IV provided honey solution 2 (45 ml honey/250 ml water). The physical exercise performed by the subjects is running on a treadmill at a speed of 5.6 km/h for 40 minutes. Measurements of electrolyte and blood glucose levels were performed 24 hrs before as initial baseline, and these were also measured after the physical exercise as well as after the treatment. Results of the study revealed that honey played a significant role in the restore electrolyte and blood glucose levels in people who have performed physical activities such as exercising and the effect of honey is similar to the commercial isotonic beverage. However, no significant difference (p-value > 0.05) was reported between the honey solution 1 and 2 and other treatment groups in elevating sodium and chloride level.


Author(s):  
Amir Reza Karamibonari

Introdution: Crataegus oxycanta (hawthorn) is used in herbal and homeopathic medicine as a cardiotonic.The present study was done to investigate the effect of the Crataegus oxycanta on antioxidant status in induced myocardial infarction in rat. Methods: In this experimental study, four groups of wistar rats (200-220g) each comprising 10 animals, were selected for this study. Group I, rats served as control. Group II rats were given isoperternol (85mg/kg body weight) subcutaneously on 15th and 16th days. Group III rats were given Crataegus oxycanta (100mg/kg/day), orally for 30 days.  Group IV rats were given Crataegus oxycanta (100mg/kg/day), orally for 30 days and isoperternol (85mg/kg body weight, subcutaneously) was given on 15th and 16th days. At the end of the experimental period, the rats were anaesthetized and blood obtained from the heart then rats were sacrificed and the hearts were removed for biochemical and histological analysis. The activity of malondialdehyde (MDA), catalase, superoxide dismutase (SOD), glutathione peroxidase (GPX) and total antioxidants was studied. Descriptive one-way analysis of variance (ANOVA) was used in different group. Significance was defined as P ≤ 0.05. Statistical analysis was performed using SPSS software version 16. Results: Crataegus significantly reduced plasma and heart tissue MDA levels (p<0.05) and significantly increased catalase, SOD, GPX and total antioxidant levels versus the group that received only isoperternol (p<0.05 ). Crataegus also decreased the rate of edema, inflammatory cell infiltration and heart tissue necrosis compared to the group that received only isoperternol. Conclusion: The study confirms the protective effect of Crataegus oxycanta against tissue damage and  oxidative stress caused by  isoperternol induced myocardial infarction


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