scholarly journals Variation in radical antioxidant capacity and the total amount of carotenoids in razor clams, Ensis marginatus (Pennant, 1777), from the Çanakkale Strait (Abidealtı), Turkey

2021 ◽  
Vol 50 (1) ◽  
pp. 16-23
Author(s):  
Bayram Kizilkaya ◽  
Sefa Acarli ◽  
Pervin Vural Ertuğrul ◽  
Selçuk Berber ◽  
Pınar Çelik
Keyword(s):  
Free Radicals ◽  
Antioxidant Capacity ◽  
Cell Damage ◽  
Nutrient Content ◽  
The Body ◽  
Dpph Radical ◽  
High Quality ◽  
Sweeping Effect ◽  
Metabolic Activities ◽  
Razor Clams

Abstract Metabolic activities such as breathing and digestion, resulting from natural functions of the body through oxidation, lead to the formation of free radicals that cause cancer, premature cardiac aging and some chronic diseases. Antioxidants are substances that remove free radicals and prevent cell damage. Seafood significantly contributes to the elimination of free radicals, especially owing to its high quality nutrient content. In this context, the objective of the study was to determine the radical antioxidant capacity and the total amount of carotenes in razor clams. The IC50 (mg g−1) value of the DPPH radical sweeping effect varied over the months (p < 0.05), showing the highest value in June, gradually decreasing from September and reaching the lowest level in February. The total amount of carotenoids also varied, with the highest value in September (p < 0.05). The total amount of chlorophyll ranged from 6.15 μg g−1 in August to 66.71 μg g−1 in December.

Evaluation of Salivary Antioxidants and Oxidative Stress Markers in Male Smokers

2019 ◽  
Vol 22 (7) ◽  
pp. 496-501
Author(s):  
Fatemeh Ahmadi-Motamayel ◽  
Parisa Falsafi ◽  
Hamidreza Abolsamadi ◽  
Mohammad T. Goodarzi ◽  
Jalal Poorolajal
Keyword(s):  
Oxidative Stress ◽  
Uric Acid ◽  
Free Radicals ◽  
Antioxidant Capacity ◽  
Cigarette Smoke ◽  
Total Antioxidant Capacity ◽  
The Body ◽  
Total Antioxidant ◽  
The Mean ◽  
And Oxidative Stress

Background: Cigarette smoke free radicals can cause cellular damage and different diseases. All the body fluids have antioxidants which protect against free radicals. Objective: The aim of this study was to evaluate salivary total antioxidant capacity and peroxidase, uric acid and malondialdehyde levels in smokers and a nonsmoking control group. Methods: Unstimulated saliva was collected from 510 males. A total of 259 subjects were current smokers and 251 were non-smokers. The levels of salivary total antioxidant capacity, uric acid, peroxidase and malondialdehyde were measured using standard procedures. Data were analyzed with t test and ANOVA. Results: The smokers were younger and dental hygiene index was higher than healthy nonsmoking controls. The mean total antioxidant capacity in smokers and nonsmokers was 0.13±0.07 and 0.21±011, respectively (P=0.001). Smokers had significantly lower peroxidase and uric acid levels than healthy controls. In addition, the mean malondialdehyde levels in the smokers and nonsmokers were 4.55 ±2.61 and 2.79 ±2.21, respectively (P=0.001). Conclusion: Cigarette smoke produces free radical and oxidative stress, causing many side effects. Salivary antioxidant levels decreased and malondialdehyde levels increased in smokers, indicating the high oxidative stress among smokers compared to nonsmokers. Cigarette smoke had deleterious effects on main salivary antioxidants levels.

scholarly journals Identifikasi Kandungan Metabolit Sekunder dan Uji Aktivitas Antioksidan Ekstrak n-Heksana Kulit Jeruk Bali (Citrus maxima Merr.).

2021 ◽  
Vol 6 (2) ◽  
pp. 185-200
Author(s):  
Elisabeth Oriana Jawa La ◽  
Repining Tiyas Sawiji ◽  
Ni Made Rai Yuliani
Keyword(s):  
Antioxidant Activity ◽  
Free Radicals ◽  
Cell Damage ◽  
Chemical Compounds ◽  
The Body ◽  
Activity Test ◽  
Grapefruit Peel ◽  
Citrus Maxima ◽  
Capture Method ◽  
Layer Chromatography

Degenerative diseases triggered by antioxidants in the body are unable to neutralize the increased concentration of free radicals that can cause cell damage, so to destroy free radicals it is necessary to have antioxidants from outside the body. Grapefruit peel (Citrus Maxima Merr) is one plant that is known to have a lot of secondary metabolite content however it is not fully utilized. To analyze the content of chemical compounds and the antioxidant effect of n-hexane extract of Grapefruit peel (Citrus Maxima Merr.). Identification of chemical compounds was carried out by phytochemical screening and confirmed by the analysis of the extract thin layer chromatography profile, whereas the antioxidant activity test was carried out using the radical capture method of 2,2-diphenyl-1-picrylhydrazyl (DPPH) with Trolox as a comparison. The results of the identification of Grapefruit peel (Citrus Maxima Merr) extracts is containing secondary metabolites in the form of flavonoids, saponins, alkaloids, triterpenoids/steroids, and tannins. The results of antioxidant activity test extracts of grapefruit peel(Citrus Maxima Merr) and Trolox each showed values that: IC50 111.69 ppm and 12.143 ppm. From the results of this test, the extract of grapefruit peel (Citrus Maxima Merr) has moderate antioxidant activity when compared to Trolox.

Pengembangan Potensi Ekstrak Belut (Monopterus albus) dalam Menangkal Radikal Bebas

2021 ◽  
Vol 8 (1) ◽  
pp. 88
Author(s):  
Havizur Rahman ◽  
Putri Maya Sari ◽  
Fitrianingsih Fitrianingsih ◽  
Ai Kurniati ◽  
Fitri Kurniawati
Keyword(s):  
Free Radicals ◽  
Freeze Drying ◽  
Cell Damage ◽  
Radical Scavenging ◽  
The Body ◽  
Meat Sample ◽  
Strong Activity ◽  
Monopterus Albus ◽  
Chain Reactions ◽  
Albumin Content

Penelitian ini bertujuan untuk mengetahui aktifitas antioksidan dari ekstrak belut (Monopterus albus) yang hidup di perairan provinsi jambi. Radikal bebas cenderung menimbulkan reaksi berantai yang apabila terjadi di dalam tubuh akan dapat menimbulkan kerusakan sel yang berlanjut dan terus menerus terutama pada penyakit kronis seperti diabetes, hipertensi dan hiperkolesterol. Pencegahan dapat dilakukan dengan memberikan seyawa antioksidan, salah satunya asam amino. Di dalam al-Quran disebutkan bahwa bangkai yang halal untuk dimakan adalah ikan dan belalang. Belut merupakan salah satu jenis ikan yang memiliki kandungan albumin yang tinggi. Sampel daging belut yang telah difillet dan dipisahkan dari kepalanya, dipotong kecil-kecil dengan ukuran 1,5 cm2 dan dibalut dengan kain tipis dalam sebuah mangkuk, lalu dikukus, dipress, dan disentrifus.  diambil fase air dan minyak dan dibuang pengotornya dengan cara disaring, lalu dikeringkan menggunakan freeze drying sehingga diperoleh ekstrak belut dalam bentuk serbuk. Metode yang digunakan pada penelitian ini adalah Radical Scavenging method menggunakan senyawa kimia DPPH (2,2- difenil-1-pikrilhidrazil). Dari hasil penelitian ditemukan bahwa nilai IC50 ekstrak belut sebesar 29,0816 ppm. Ekstrak belut memiliki potensi menangkal radikal bebas dengan aktifitas kuat. Kata Kunci: Ektstrak Belut, Monopterus albus, Penangkal Radikal Bebas This study aims to determine the antioxidant activity of eel (Monopterus albus) extracts that live in the waters of the province of Jambi. Free radicals tend to cause chain reactions that occur in the body and will cause ongoing and continuous cell damage, especially in chronic diseases such as diabetes, hypertension and hypercholesterolemia. Prevention can be done by providing antioxidants, one of which is amino acids. In the Koran, it is stated that the carcasses that are lawful to eat are fish and grasshoppers. Eel is a type of fish that has a high albumin content. The eel meat sample that has been filled and given from its head, is cut into small pieces with a size of 1.5 cm2 and wrapped in a thin cloth in a container, then steamed, pressed, and centrifuged. the air and oil phases are taken and the impurities are removed by filtering, then they are dried using freeze drying in order to obtain the eel extract in powder form. The method used in this study is the Radical Scavenging Method using the chemical compound DPPH (2,2- diphenyl-1-pikrilhidrazil). From the research results it was found that the IC50 value of eel extract was 29.0816 ppm. Eel extract has the potential to ward off free radicals with strong activity.

scholarly journals Age and sex related serum changes in nitric oxide and its correlation with plasma lipid profile and lipid peroxidation in healthy ageing individuals

2017 ◽  
Vol 4 (4) ◽  
pp. 1031
Author(s):  
Rohit Sheth ◽  
Tanmay Bhat ◽  
Suchetha Kumari N. ◽  
Harshini Devi Ullal
Keyword(s):  
Nitric Oxide ◽  
Free Radicals ◽  
Antioxidant Capacity ◽  
Lipid Profile ◽  
Elderly People ◽  
Total Antioxidant Capacity ◽  
Antioxidant Status ◽  
The Body ◽  
Lipid Hydroperoxides ◽  
Total Antioxidant

Background: The free radical theory of aging postulates that aging results from the accumulation of deleterious effects caused by free radicals, and the ability of an organism to cope with cellular damage induced by ROS plays an important role in determining organismal lifespan. GSH and SOD functions by donating the proton and in scavenging the superoxide radicals, thereby protecting the body against oxidative stress by scavenging the free radicals produced in the body. Glutathione peroxidase also have similar function, it reduce lipid hydroperoxides to their corresponding alcohols and free hydrogen peroxide to water.Methods: Hundred healthy adults from staff and student community under the age group of 20 to 60 years were recruited. Approximately 5ml blood sample was collected and used for the analysis of lipid profile, MDA and antioxidant status using standard protocol.Results: The lipid profile, MDA and antioxidant status were measured and compared with that of serum nitric oxide levels of 100 healthy individuals of the age 20-60 yrs. Men aged 20-29 years showed significantly higher NO levels compared to corresponding women. There is a significant reduction in total antioxidant capacity in elderly people. With the decrease in NO there is increase in MDA is observed.Conclusions: There is a significant reduction in total antioxidant capacity in elderly people. This reduction in antioxidant capacity implies a defect in antioxidant system, may be due to a reduction in individual antioxidant or may be caused by a non-equilibrium or poor cooperation between them.

scholarly journals The Effect of Purple Sweet Potato Extract on The Circulating Endothelial Cell (CEC) levels in Rat Model of Diabetes

2017 ◽  
Vol 3 (2) ◽  
pp. 47
Author(s):  
Emilia Puspita Sari ◽  
Edi Junaidi ◽  
Heni Fatmawati
Keyword(s):  
Diabetes Mellitus ◽  
Metabolic Disease ◽  
Free Radicals ◽  
Ipomoea Batatas ◽  
Cell Damage ◽  
The Body ◽  
Impaired Metabolism ◽  
Purple Sweet Potato

Diabetes mellitus is a metabolic disease with impaired metabolism of carbohydrates, fats and proteins are characterized by hiperglycemia caused by insufficiency of insulin secretion and insulin resistance. Diabetes mellitus is the leading cause of death in Indonesia, especially in developing countries. Most (90%) classified as type 2 diabetes mellitus and 10% of type 1 diabetes mellitus. In DM, increased oxidative stres. DM oxidative stres due to the increase of free radicals in the body. Oxidative stres can lead to irreversible endothelial injury that would lead to the loss of endothelial cells characterized by the expression of CD 146. Ipomoea batatas L. anthocyanin-containing compound is an antioxidant that can reduce free radicals and reduce oxidative cell damage caused by free radicals. From the analysis of the data obtained Ipomoea batatas L. mempuyai influence on the content of the CEC of 42.5%.

ANTIOXIDANTS IN ORAL DISEASES: A REVIEW

2021 ◽  
pp. 7-9
Author(s):  
N. Harika ◽  
K. Sridevi ◽  
B. Krishnaveni ◽  
N. Prasanth Kumar ◽  
G. Mounika
Keyword(s):  
Free Radicals ◽  
Cell Damage ◽  
Periodontal Diseases ◽  
Chemical Species ◽  
Well Being ◽  
The Body ◽  
Oral Diseases ◽  
Natural Substances ◽  
Oxidation Reduction ◽  
Health And Well Being

Antioxidants are compounds that destroy the free radicals in the body, thereby preventing harmful oxidation-reduction reactions. Free radicals are chemical species possessing an unpaired electron that can be considered fragments of molecules and generally very reactive. They are produced continuously in cells either as accidental by-products of metabolism or deliberately during, phagocytosis. However, excess free radical production originating from endogenous or exogenous sources might play a role in many diseases. Antioxidants are man-made or natural substances that may prevent or delay some types of cell damage. Antioxidants are crucial for maintaining optimum health and well-being. Free radicals have been implicated in numerous oral diseases like leukoplakia, Periodontal diseases, and oral cancer.

Analysis of the Amount of Polyphenols, Flavonoids and Assessment of the Antioxidant Capacity of Frozen Fruits

2018 ◽  
Vol 69 (2) ◽  
pp. 445-448 ◽  
Author(s):  
Annamaria Pallag ◽  
Tunde Jurca ◽  
Vasile Sirbu ◽  
Ana Honiges ◽  
Claudia Jurca
Keyword(s):  
Free Radicals ◽  
Phenolic Compounds ◽  
Antioxidant Capacity ◽  
Human Body ◽  
The Body ◽  
Nutritional Qualities ◽  
Long Time

The data from literature shows that frozen vegetal products preserve their nutritional qualities for a long time. Fruits have a high content of substances with antioxidant capacity in the body. There are many recent studies demonstrating the importance of antioxidant substances in neutralizing free radicals in the human body. In this study there were analysed phenolic compounds and flavonoids in eight different species of fruits, belonging to three families. The antioxidant capacity of the extracts was evaluated by: CUPRAC assay, ABTS method and FRAP method. Our results show that the studied fruits represent rich sources of compounds with antioxidant capacity.

scholarly journals Toxicity of DON on GPx1-Overexpressed or Knockdown Porcine Splenic Lymphocytes In Vitro and Protective Effects of Sodium Selenite

2019 ◽  
Vol 2019 ◽  
pp. 1-24 ◽  
Author(s):  
Zhihua Ren ◽  
Changhao Chen ◽  
Yu Fan ◽  
Chaoxi Chen ◽  
Hongyi He ◽  
...  
Keyword(s):  
Dna Methylation ◽  
Antioxidant Capacity ◽  
Sodium Selenite ◽  
Animal Feed ◽  
Cell Damage ◽  
The Body ◽  
Dependent Manner ◽  
Protective Effects ◽  
Splenic Lymphocytes ◽  
Apoptosis Rate

Deoxynivalenol (DON) is a common contaminant of grain worldwide and is often detected in the human diet and animal feed. Selenium is an essential trace element in animals. It has many biological functions. The role of selenium in the body is mainly orchestrated by selenoprotein. Glutathione peroxidase (GPx) also exists widely in the body and has attracted much attention due to its high antioxidant capacity. In order to explore the effect of the GPx1 gene on toxicity of DON, in this study, we overexpressed or knockdown GPx1 in porcine splenic lymphocytes, then added different concentrations of DON (0.1025, 0.205, 0.41, and 0.82 μg/mL) and sodium selenite (2 μmol/L) to the culture system. Using various techniques, we detected antioxidant function, free radical content, cell apoptosis, and methylation-related gene expression to explore the effect of GPx1 expression on DON-induced cell damage. We also explored whether selenium can antagonize the toxicity of DON in these two cell models and revealed the protective effect of sodium selenite on DON-induced cell damage in GPx1-overexpressing or knockdown splenic lymphocytes. Finally, our findings revealed the following: (1) GPx1 can regulate the antioxidant capacity, apoptosis rate, and expression of DNA methylation-related genes in pig splenic lymphocytes. (2) Na2SeO3 (2 μmol/L) can regulate the antioxidant capacity, apoptosis rate, and expression of DNA methylation-related genes in pig splenic lymphocytes, and this effect is more significant in GPx1-overexpressing cells than in GPx1-knockdown cells. (3) DON can cause oxidative damage, apoptosis, and methylation injury in GPx1-overexpressing or knockdown pig splenic lymphocytes in a concentration-dependent manner. (4) Na2SeO3 (2 μmol/L) can antagonize the toxic effect of DON on GPx1-overexpressing or knockdown pig splenic lymphocytes. Our findings may have important implications for food/feed safety, human health, and environmental protection.

scholarly journals THE EFFECTS OF EXPOSURE DURATION TO ELECTRONIC CIGARETTE SMOKE ON DIFFERENCES IN SUPEROXIDE DISMUTASE AND MALONDIALDEHYDE IN BLOOD OF WISTAR RATS

2019 ◽  
pp. 13-16
Author(s):  
RIVAN VIRLANDO SURYADINATA ◽  
BAMBANG WIRJATMADI ◽  
MERRYANA ADRIANI ◽  
SRI SUMARMI
Keyword(s):  
Oxidative Stress ◽  
Superoxide Dismutase ◽  
Free Radicals ◽  
Cigarette Smoke ◽  
Wistar Rats ◽  
Cell Damage ◽  
The Body ◽  
Electronic Cigarette ◽  
Male Wistar Rats ◽  
The Relationship

Objective: Exposure to electronic cigarette smoke causes an increase of free radicals. Physiologically, the body produces antioxidant superoxide dismutase to neutralize the free radicals. However, an excessive increase of the free radicals will result in an imbalance between the amount of free radicals and antioxidants. The free radicals in the body can trigger lipid peroxidation so that it will result in oxidative stress causing cell damage. Malondialdehyde increase is a marker of oxidative stress in the body. The aim of this research is to understand the changes and the relationship between levels of superoxide dismutase and malondialdehyde in the blood due to exposure to electronic cigarette smoke. Methods: This research is an experimental study using male Wistar rats as experimental animal models. In the study, the exposure to electronic cigarette smoke with different duration of administration was carried out. Next, blood samples were taken to check the levels of superoxide dismutase and malondialdehyde. Results: The results showed a difference in antioxidant levels between antioxidant Superoxide Dismutase and malondialdehyde (p<0.05). Meanwhile the relationship between the two groups showed a strong (r = 0.893) and significant (p = 0.000) relationship. Conclusion: The exposure to electronic cigarette smoke can reduce the level of antioxidant superoxide dismutase and increase the level of malondialdehyde in blood. In addition, changes in the levels of antioxidant superoxide dismutase and malondialdehyde had a strong and significant relationship.

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