scholarly journals Effects of Sleep Deprivation, Nicotine, and Selenium on Wound Healing in Rats

2017 ◽  
Author(s):  
Kenan Gümüstekin ◽  
Bedri Seven ◽  
Nezihe Karabulut ◽  
Ömer Aktas ◽  
Nesrin Gürsan ◽  
...  

Effects of sleep deprivation (SD), nicotine, and selenium (Se) on woundhealing were studied in 50 male rats (Sprague-Dawley strain). Fullskin-thickness burns were produced in animals. Then, SD, nicotine, andSe administrations were applied to animals in different groups. Woundhealing was assessed by pathological analysis of wound by countingfibroblasts, capillary vessels, polymorphonuclear leucocytes (PNLs), andby measuring radiolabeled immunoglobulin G (IgG) amount in woundarea by radio-pharmaceutical and immunoscintigraphic procedures. Thenumber of fibroblasts and capillary vessels were higher in control andSe groups than in sleep deprivation and nicotine groups, and the numberof PNLs and the radiolabeled polyvalent IgG levels were higher inSD and nicotine groups than in control and Se groups. The resultssuggest that SD and nicotine may delay wound healing and that Sesupplementation may accelerate wound healing by preventing nicotineinducedoxidative stress and lipid peroxidation.


2019 ◽  
Vol 41 (1) ◽  
pp. 141-150 ◽  
Author(s):  
Hamid Karimi ◽  
Noor-Ahmad Latifi ◽  
Ali Zare Mehrjerdi ◽  
Babak Jafarnejad ◽  
Ali-Mohammad Karimi

Abstract Prevention of infections is a very important issue in treating the burn wounds. The nanosilver dressings have many promising advantages, but absorption of silver ions and its adverse effects to the body were always a question. The aim of this study was to compare Silver serum levels and acute toxic effects of nanosilver on histopathology of organs (lungs, liver, kidney, spleen, and brain) in two types of AgiCoat and Acticoat (nanosilver) dressings on second-degree deep burn in rat. This is an experimental study conducted in our animal laboratory. We divided 24 Sprague–Dawley male rats weighing 300 to 350 randomly into two groups. After anesthesia, a second deep-degree burn was made over dorsal skins of rats by standard method. For group A, Agicoat and, for group B, Acticoat dressings were used. The dressings were changed every 3 days with AgiCoat and Acticoat, respectively. After 14 days, we got blood samples and tissue samples taken from heart, liver, kidneys, spleen, lungs, and brain and a sample from dorsal skin of the rat for histopathological examinations. The results showed that the levels of serum silver in both groups were significantly higher than the standard level (1.22 part per million (PM); AgiCoat, P = .017; Acticoat, P = .000), but there was no significant difference between the groups (P = .551). Examination of the relationship between the level of serum silver and histopathological changes in liver showed that hepatotoxicity of AgiCoat was higher compared with Acticoat and the difference was significant (P = .002). There were no pathological changes in brain, kidneys, spleen, heart, and lungs. Wound healing was faster in Acticoat group. The nanosilver dressings can cause toxicity in liver but not in kidney, brain, spleen, heart, and lungs. Liver pathology and hepatotoxicity were more prominent in AgiCoat group. Wound healing was faster in Acticoat group.



2019 ◽  
Vol 39 (1) ◽  
Author(s):  
Fatemeh Beyranvand ◽  
Ahmad Gharzi ◽  
Abolfazl Abbaszadeh ◽  
Reza Mohammadrezaei Khorramabadi ◽  
Mohammadreza Gholami ◽  
...  


2020 ◽  
Vol 30 (2) ◽  
pp. 100
Author(s):  
Desy Muliana Wenas ◽  
Lisana Sidqi Aliya ◽  
Wisma Merry Anjani

<p><em><em>Bananas have many types and benefits. One of them is the Yellow Kepok Banana. Banana stem, leaf midrib, and corm contain phytochemicals compound as medicinal properties. The study aimed to determine the effect of the yellow kepok banana corm extract formula as an anti-inflammatory. Banana corm was cut into 0.3 x 1 x 3 cm pieces, dried in the oven with temperature 60 °C for 6 hours, then made 40 mesh powder. The powder extracted using 70 % ethanol by maceration technique for 24 hours, repeated three times. Anti-inflammatory testing was carried out on male </em>Sprague Dawley<em> white rats. A total of 24 white rats were divided into six treatment groups, consists of </em><em>different concentrations of the extract (10, 15, and 20 %), positive control (commercial ointment), negative control, and a normal control (giving a wound without being given any formula). The experiment was designed as a randomized complete, with four replications, data were analyzed using ANOVA and the </em>Post Hoc Games Howell Test<em>. The results showed that the yellow kepok banana extract formula had the potential for wound healing. The 20 % extract formula can accelerate wound healing in a day than the 10 and 15 % formulas. The  speed  is  shown  by  wound  healing  without  scars  from  the   20 %</em> <em>extract formula, which  occurs  earlier  than other formulas. The anti-inflammatory activity of the 20 % formula was comparable to the positive control of commercial ointment. The anti-inflammatory activity of the yellow kepok banana ointment formula is related to the compound of saponins, flavonoids, and tannins. The results indicate that the yellow kepok banana corm extract has the potential to be developed as an anti-inflammatory drug.</em><br /></em></p>



Author(s):  
Associate professor Elnaz Bazmakdar ◽  
Professor Eskandar Moghimipour ◽  
Associate professor Neda Sistani Karampour ◽  
Annahita Rezaie ◽  
Professor Seyed Mohammad Bagher Nabavi

A significant challenge in biomedicine is the development of Biomaterials with the potential to accelerate wound healing. The aim of this study was to investigate the effect of the gel prepared from sea cucumber on wound healing in rats. Full-thickness wounds were created in male rats divided into five experimental groups, negative control (NC), positive control (PC), and treatments. The NC and PC groups received respectively gel base and phenytoin cream 1%. Treatment groups were treated topically by gels of 1%, 3%, and 5% Holothuria parva extract (HPE) in the gel base. The rats were sacrificed on days 7, 14, and 21. Pathological reports revealed the proliferation of keratinocytes in the borders of the wound in treatment groups and controls. Formation of granulation tissue was seen on day 7 in treatment groups, collagen fibers in granulation tissue were randomly organized, and the rate of fibroblast decreased. Results showed that there were statistically significant differences in wound contraction between all groups in comparison to the NC group ( P < .05) on day 8. It was concluded that the 1% HPE gel has a good potential for promoting wound healing. [Formula: see text]



2019 ◽  
Vol 28 (5) ◽  
pp. 1507-1514 ◽  
Author(s):  
Akram Zangeneh ◽  
Mehrdad Pooyanmehr ◽  
Mohammad Mahdi Zangeneh ◽  
Rohallah Moradi ◽  
Raheleh Rasad ◽  
...  


2010 ◽  
Vol 22 (4) ◽  
pp. 587 ◽  
Author(s):  
Gaffari Türk ◽  
Ali Osman Çeribaşi ◽  
Fatih Sakin ◽  
Mustafa Sönmez ◽  
Ahmet Ateşşahin

The present study was conducted to investigate the possible protective effects of lycopene (LC) and ellagic acid (EA) on cyclophosphamide (CP)-induced testicular and spermatozoal toxicity associated with the oxidative stress and apoptosis in male rats. Forty-eight healthy adult male Sprague-Dawley rats were divided into six groups of eight rats each. The control group was treated with placebo; the LC, EA and CP groups were given LC (10 mg kg–1), EA (2 mg kg–1) and CP (15 mg kg–1), respectively, alone; the CP+LC group was treated with a combination of CP (15 mg kg–1) and LC (10 mg kg–1); and the CP+EA group was treated with a combination of CP (15 mg kg–1) and EA (2 mg kg–1). All treatments were maintained for 8 weeks. At the end of the treatment period, bodyweight and the weight of the reproductive organs, sperm concentration and motility, testicular tissue lipid peroxidation, anti-oxidant enzyme activity and apoptosis (i.e. Bax and Bcl-2 proteins) were determined. Administration of CP resulted in significant decreases in epididymal sperm concentration and motility and significant increases in malondialdehyde levels. Although CP significantly increased the number of Bax-positive (apoptotic) cells, it had no effect on the number of Bcl-2-positive (anti-apoptotic) cells compared with the control group. However, combined treatment of rats with LC or EA in addition to CP prevented the development of CP-induced lipid peroxidation and sperm and testicular damage. In conclusion, CP-induced lipid peroxidation leads to structural and functional damage, as well as apoptosis, in spermatogenic cells of rats. Both LC and EA protect against the development of these detrimental effects.



Author(s):  
Mursel Bicer ◽  
Saltuk Bugra Baltaci ◽  
Suleyman Patlar ◽  
Rasim Mogulkoc ◽  
Abdulkerim Kasim Baltaci

AbstractAimThe present study aimed to examine the effects of melatonin supplementation on lipid peroxidation in the bone tissue of diabetic rats subjected to acute swimming exercise.MethodsThe study was conducted on 80 Sprague-Dawley type adult male rats which were equally allocated to eight groups: group 1, general control; group 2, melatonin-supplemented control; group 3, melatonin-supplemented diabetic control; group 4, swimming control; group 5, melatonin-supplemented swimming; group 6, melatonin-supplemented diabetic swimming; group 7, diabetic swimming; group 8, diabetic control. In order to induce diabetes, the animals were subcutaneously injected with 40 mg/kg streptozotocin (STZ). The animals were supplemented with 3 mg/kg/day melatonin intraperitoneally (IP) for 4 weeks. At the end of the study, the animals were decapitated to collect bone tissue samples which were examined to find out the malondialdehyde (MDA) (nmol/g/protein) and glutathione (GSH) (mg/dL/g protein) levels.ResultsThe highest MDA values in the bone tissue were found in groups 7 and 8. MDA levels in the bone tissue in groups 3 and 6 were lower than the levels in groups 7 and 8, but higher than those in all other groups. Groups 3, 5 and 6 had the highest bone tissue GSH values. On the other hand, the lowest GSH level was established in groups 7 and 8.ConclusionThe results of the present study indicated that the cell damage caused by acute swimming exercise and diabetes in the bone tissue could be prevented by melatonin supplementation.



2008 ◽  
pp. 261-268
Author(s):  
J-L Wu ◽  
Q-P Wu ◽  
X-F Chen ◽  
M-K Wei ◽  
J-M Zhang ◽  
...  

The intracellular levels of antioxidant and free radical scavenging enzymes are gradually altered during the aging process. An agedependent increase of oxidative stress occurring throughout the lifetime is hypothesized to be the major cause of aging. The current study examined the effects of L-malate on oxidative stress and antioxidative defenses in the liver and heart of aged rats. Sprague-Dawley male rats were randomly divided into four groups, each group consisting of 6 animals. Group Ia and Group IIa were young and aged control rats. Group Ib and Group IIb were young and aged rats treated with L-malate (210 mg/kg body weight per day). L-malate was orally administrated via intragastric canula for 30 days, then the rats were sacrificed and the liver and heart were removed to determine the oxidant production, lipid peroxidation and antioxidative defenses of young and aged rats. Dietary L-malate reduced the accumulation of reactive oxygen species (ROS) and significantly decreased the level of lipid peroxidation in the liver and heart of the aged rats. Accordingly, L-malate was found to enhance the antioxidative defense system with an increased activity of antioxidant enzymes, such as superoxide dismutase (SOD) and glutathione peroxidase (GPx) and increased glutathione (GSH) levels in the liver of aged rats, a phenomenon not observed in the heart of aged rats. Our data indicate that oxidative stress was reversed and the antioxidative defense system was strengthened by dietary supplementation with L-malate.



1991 ◽  
Vol 73 (1) ◽  
pp. 127-130 ◽  
Author(s):  
Robert A. Hicks ◽  
Jose Bautista ◽  
Nathan Phillips

Using several measures of sexual activity, 24 male and 30 female Sprague-Dawley rats were subjected to a pretreatment test and 3 posttests (immediate and Recovery Days 4 and 7) following REM sleep deprivation in a water tank. With careful controls, sexual activity was not significantly affected by the sleep treatments. Data do not support motivational hypotheses.



2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Summaya M. Dhiyaaldeen ◽  
Mohammed A. Alshawsh ◽  
Suzy M. Salama ◽  
Nahla S. I. Alwajeeh ◽  
Rami Al Batran ◽  
...  

Wound healing involves inflammation followed by granular tissue development and scar formation. In this study, synthetic chalcone 3-(2-Chlorophenyl)-1-phenyl-propenone (CPPP) was investigated for a potential role in enhancing wound healing and closure. Twenty-four male rats were divided randomly into 4 groups: carboxymethyl cellulose (CMC) (0.2 mL), Intrasite gel, and CPPP (25 or 50 mg/mL). Gross morphology, wounds treatment with the CPPP, and Intrasite gel accelerate the rate of wound healing compared to CMC group. Ten days after surgery, the animals were sacrificed. Histological assessment revealed that the wounds treated with CPPP showed that wound closure site contained little amount of scar and the granulation tissue contained more collagen and less inflammatory cells than wound treated with CMC. This finding was confirmed with Masson’s trichrome staining. The antioxidant defence enzymes catalase (CAT) and superoxide dismutase (SOD) were significantly increased in the wound homogenates treated with CPPP (P<0.05) compared to CMC treated group. However, in the CPPP treatment group, lipid peroxidation (MDA) was significantly decreased (P<0.05), suggesting that the CPPP also has an important role in protection against lipid peroxidation-induced skin injury after ten days of treatment with CPPP, which is similar to the values of cytokines TGF-βand TNF-αin tissue homogenate. Finally the administration of CPPP at a dosage of 25 and 50 mg/kg was suitable for the stimulation of wound healing.



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