Статьи журнала - Журнал стресс-физиологии и биохимии
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Статья научная
Species of medicinal plants are grouped into sets, each of which was used in folk or scientific medicine for a specific infectious disease. A total of 59 infections and species sets were taken into account. Increases in the occurrence, in such sets, of species belonging to certain families and species containing chemical compounds of certain groups (flavonoids, terpenoids, alkaloids, phenols, lactones, coumarins, iridoids, xanthones) were studied. The mathematical-statistical Student's t-test was used. As a rule, in the set of species used for infectious diseases, the occurrence of some (from 1 to 12) families is significantly increased. 67 families are characterized by a significantly increased occurrence in at least one such set. Significant differences were noted between families in the number of infections with which they are associated through their affinity for the sets of plants used. It was also revealed that, as a rule, in the set of species used for infectious diseases, the occurrence of certain (from 1 to 8) groups of compounds was significantly increased. Significant differences were noted between infections in combinations of groups of compounds that were reliably related to the plant species used. Information about the considered patterns can be used to assess the prospects of plant species, families, and chemical compounds in the study of their antimicrobial and antiviral activity.
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Potential role of nutrients in immune boosting and aiding against COVID- 19 pathogenesis
Статья обзорная
COVID-19 or the novel Corona Virus is highly contagious and acute disease and is caused by Severe Acute Respiratory Syndrome Coronavirus-2 or SARS-CoV-2. The pathogenesis of Corona Virus is very complex and involves the suppression of host innate and antiviral immune response, cytokine storm is described as induction of oxidative stress followed by hyper inflammation which causes tissue fibrosis, pneumonia and lung injury. Several neutraceuticals have proven their abilities against viral pathogenesis and boosting immunity. These neutraceuticals involves Vitamin C, Vitamin D, Zinc, Selenium, and Copper. To boost immunity, combination of some of the phytonutrients may be used as food supplements. It may also help provide therapeutic assistance against COVID-19, preventing spread of virus and suppression of hyper inflammation. This review speculates the significance of nutrition as a mitigation strategy to support immune function amid the COVID-19 pandemic, identifying food groups and key nutrients of importance that may affect the outcomes of respiratory infections. To survive in the current conditions of COVID-19 it is necessary to build up the immunity. An appropriate diet can make sure that a body is capable against the viral pathogenesis.
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Pre-exposure to gamma rays alleviates the harmful effect of salinity on cowpea plants
Статья научная
Soil salinity is one of the most severe factors limiting growth and physiological response in cowpea plants. In this study, the low concentrations of NaCl (25mM) increased plant growth, photosynthetic pigments content, total soluble protein content, nucleic acids contents (DNA and RNA), lipid peroxidation, non enzymatic antioxidants (anthocyanin, ascorbic acids and α-tocopherol), number of legumes per plant, number of seeds per legume, number of seeds per plants, legume length, fresh and dry weight of legumes and weight of 1000 seeds and total soluble proteins and carbohydrate contents in harvested seeds as compared to control. On the other hand, the high concentrations of NaCl (50, 100 and 200 mM) caused reduction in plant growth, photosynthetic pigments content, total soluble protein content, nucleic acids contents (DNA and RNA), all yield attributes and harvested seeds components but increased lipid peroxidation and non enzymatic antioxidants (anthocyanin, ascorbic acids and α-tocopherol). Electrophoretic studies of proteins showed three types of modifications are observed in the protein patterns of cowpea seeds, some protein bands were disappeared, other proteins were selectively increased and synthesis of new set of protein was induced. Some of these responses were observed under gamma rays and salinity treatments, while others were induced by either gamma rays or salinity. Seeds irradiation with gamma rays alleviates the adverse effect of salt stress compared to non irradiated seeds.
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Prediction of Future World on The Basis of High Heat conditions on Plant Metabolism
Статья научная
Global warming creates temperature elevation with the help of green house gases and anthropogenic activities. Elevated temperatures have been selected as key factors that influence on plant growth and development. CO2 is essential for plant photosynthesis and growth. But CO2 is a green house gas and responsible for temperature elevation. Up to certain level heat is helpful for plant growth, survival and physio – biochemical processes. Above the certain range, heat causes disruption in plant metabolic processes. This is also important for the development of new strategies and biotechnological tools for enhancing plant growth in the future world facing from high heat stress situations. In this review, we have focused on role of high temperature effects on plant metabolisms to illustrate the possible future world.
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Prediction of disadaptation disorders in terms of the immune status
Статья научная
The aim of the study is to enable rapid development of forecasting human disadaptation disorders caused by stress factors change living conditions. The developed method allows for the values of salivary immunoglobulin A, ceruloplasmin and proportion of lymphocytes in the blood leukocyte formula to recognize nosological class of diseases which are based on the failure of adaptation processes. Application of the method allows early adaptation period to identify individuals with poor adaptive skills and to predict the likely nosological form disadaptation disorders, which are essential for effective preventive measures.
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Статья научная
Medicinal plants have bioactive compounds which are used to cure various diseases.In the present investigation involves the preliminary phytochemical analysis to find out the various chemical constituents from the plant sample of Sida sivarajani . Four different solvents viz. Acetone, water, n-hexane and methanolwere used to obtain extracts from plantleaves. The extracts were subjected to preliminary phytochemical screening using standard procedure. The phytochemical screening reveals the presences of carbohydrates, cardic glycosides; phenol & terpenoids are present in all four solvents. Among all the four extracts, maximum phytochemicals were found dissolved in water, n-hexane and methanol.
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Preparation and characterization of renewable bio-polyol from the edible seed oil
Статья научная
Polyol is an organic compound containing multiple hydroxyl groups. This study looked at the possibility of using an edible oil extract from Salvia hispanica seeds as a sustainable source for polyols and, eventually, biodiesel or polyurethane. For this, a combination of hydrogen peroxide and acetic acid was used to create new polyol from the aforementioned oil in one-step synthesis. Standard techniques such as physicochemical analysis, phytochemical and basic radical identification, FTIR and NMR were used to characterize the polyol derivative that was extracted from the oil. Antimicrobial activity of both oil and polyol were tested against certain bacteria and fungi. Spectral analysis demonstrated the formation of polyol and this result indicated the possible of using Salvia hispanica polyol as a raw material for the preparation of bio-polymers.
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Статья научная
Seeds vigour and uniform germination across diverse environmental conditions is a primary objective in agriculture. Moisture and temperature are key factors affecting cotton seed quality during storage, where maintenance is rather difficult during long-term storage. To investigate the potential influence of UV radiation on enhancing cotton seed vigour after long-term storage, Deir Al-Zour 22 cotton variety was selected due to its reduced-vigour by time and its low germination rates. Germination rates of cotton seeds exposed to combined UV-A, B and C irradiation for different periods of time (4, 8, 12, and 16 min) were enhanced compared to non-irradiated seeds. Data showed improved growth of generated seedlings on PEG and NaCl supplemented media. Results showed no major changes on the expression of GA3ox1 gene, whereas, two stress-related genes DEH and VPP were temporarily activated after treatment with UV-irradiation supporting their function as scavenging and accumulating factors of ROS, a typical by-product of the photo-excitation under UV. Our results suggest the possibility of using combined UV-A, B and C radiation as a physical priming agent of cotton seeds to induce plant vigor and enhance germination under stress conditions without affecting normal growth.
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Статья научная
Radiolytically derived oligomers of sodium alginate are considered to act as signal molecules, affecting growth, development and defense mechanisms of plants through gene regulation. Since germination is a critical stage in the life cycle of plants, the objective of this study was to determine the effect of irradiated sodium alginate (ISA) on the characteristics of seed germination of Foeniculum vulgare Mill. Soaking the seeds in an aqueous solution of ISA showed significant improvement in various seed germination parameters, viz. germination, viability and relative water content of seed, nitrate reductase activity, protease activity, α and β amylase activities in germinated seedlings of fennel. GPC study revealed formation of lower molecular weight oligomer fractions in irradiated samples which could be responsible for plant growth promotion in the present work.
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Статья научная
Fusarium graminearum is one of the major global pathogens of cereals and is considered the main causal agent of Fusarium head blight (FHB) disease in wheat. F. graminearum leads to severe losses in grain yield and quality of wheat. In the present study, immature embryos of three Egyptian wheat cultivars (Giza 164, Sids 1 and Bani Suef 6) have been used to highlight the physiological changes in wheat plants in response to treatment with different concentrations of Fugal Culture Filtrate (5%, 10%, 20% and 40%). Samples were taken at 5, 10 and 15 days after inoculation. The three studied wheat cultivars exhibited different responses for inoculation with different concentrations of FCF. However, inoculation with 20% FCF significantly increased the activities of antioxidant enzymes (catalase, peroxidase and ascorbate peroxidase) in shoots of wheat cultivars compared with uninoculated ones. In addition, proline and secondary metabolites (total phenol and flavonoids) significantly increased throughout the experimental period. Our results also proved that in addition to the common protective mechanisms detected in all the infected cultivars there are cultivar - dependent physiological changes exhibited by wheat plant during abiotic stress.
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Статья научная
This study focuses on the search for a natural treatment to reduce lead toxicity in male Wistar rat by using the aquous extract of wheatgrass Triticum aestivum (WG). In addition to the control group (C), rats were exposed to a diet containing 600 mg Pb acetate/Kg diet (Pb), or combined with the WG at 9g/100g diet (Pb-WG) for a period of 6 weeks. Biochemical, reproductive and histological markers were evaluated. The results of haematological parameters show a very significant increase in white blood cells and lymphocytes with the group treated with the lead single. By contrast there was no difference was recorded between the treated group by Pb-WG and the control. A significant decrease in the red blood cells, the haemoglobin and haematocrit was recorded in the group treated with Pb alone. The tests of hormonal and biochemical parameters showed a decrease in the concentration of the hormone triiodothyronin (T3) and thyreostimulin (TSH) in the Pb group compared to the (control and Pb-WG). The serum testosterone concentration, urea, total cholesterol levels, the rate of TGP, TGO and creatinine were significantly increased in rats treated with (Pb) alone compared to (the control and Pb-bl group), while no change in glucose was shown. However, the (Pb-WG) group shows no change compared to the control. The level of calcium showed a significant decrease in the Pb group, and which returns to the normal state in group (Pb-WG) compared to the control. These results are confirmed by the study of histological sections. A morphological change represented by volume shrinkage of the vesicles. A return to the normal structure of follicles was observed in (Pb-WG) group. Histology study of the kidney, testis epididymis showed no change in (Pb-WG) compared to the control group. Contairement in the group exposed to lead (Pb) the parenchyma of the kidney shows dilated distal and proximal tubules causing renal tubular damage. The testes marked destruction and degeneration of germ cells and the light of some seminiferous tubules are empty. The study of the fertility parameters indicates a highly significant decrease in the concentration, the mobility of sperm counts among the treated group by Pb alone. The administration of the wheat grass has increased.
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Protective effect of d-ribose against inhibition of rats testes function at excessive exercise
Статья научная
An increasing number of research studies point to participation in endurance exercise training as having significant detrimental effects upon reproductive hormonal profiles in men. The means used for prevention and correction of fatigue are ineffective for sexual function recovery and have contraindications and numerous side effects. The search for substances effectively restoring body functions after overtraining and at the same time sparing the reproductive function, which have no contraindications precluding their long and frequent use, is an important trend of studies. One of the candidate substances is ribose used for correction of fatigue in athletes engaged in some sports. We studied the role of ribose deficit in metabolism of the testes under conditions of excessive exercise and the potentialities of ribose use for restoration of the endocrine function of these organs. 45 male Wistar rats weighing 240±20 g were used in this study. Animals were divided into 3 groups (n=15): control; excessive exercise; excessive exercise and received ribose treatment. Plasma concentrations of lactic, β-hydroxybutyric, uric acids, luteinizing hormone, total and free testosterone were measured by biochemical and ELISA methods. The superoxide dismutase, catalase, glutathione peroxidase, glutathione reductase and glucose-6-phosphate dehydrogenase activities and uric acids, malondialdehyde, glutathione, ascorbic acids, testosterone levels were estimated in the testes sample. Acute disorders of purine metabolism develop in rat testes under conditions of excessive exercise. These disorders are characterized by enhanced catabolism and reduced reutilization of purine mononucleotides and activation of oxidative stress against the background of reduced activities of the pentose phosphate pathway and antioxidant system. Administration of D-ribose to rats subjected to excessive exercise improves purine reutilization, stimulates the pentose phosphate pathway work, inhibits oxidative stress of the testes, and saves the testicular endocrine function.
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Protective effect of ghrelin on isoniazid-induced liver injury in rat
Статья научная
Ghrelin (GHR) is a peptide that has protective effects on many tissues injury. It has anti-inflammatory and anti-oxidant effects. Isoniazid (INH) a widely used antituberculosis drug, has hepatotoxic side effect. The aim of this study was to evaluate the protective role of ghrelin in liver toxicity due to isoniazid. Eighteen male rats were used in this study and divided in to three groups. Including: control, isoniazid, isoniazid and ghrelin groups. Nitric oxide(NO), prostaglandin E2(PGE2), and hepatic enzymes, ALT(alanine aminotransferase), AST(aspartate aminotransferase), ALK(alkaline phosphatas), were assessed and histologic study of liver were performed as indicators of liver damage following isoniazid toxicity. Ghrelin significantly increased NO metabolites and decreased PGE2 level comparison with INH group, but had no significant change compared to the control group. This study showed that ghrelin administration inhibited liver injury in rats due to isoniazid toxicity. The liver protective role of ghrelin may be mediated at least in part by its anti-inflammatory effect.
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Protective effect of ghrelin on sodium valproate-induced liver injury in rat
Статья научная
Ghrelin is a peptide that has protective effects on many tissues injury. It has anti-inflammatory and anti-oxidant effects. Sodium valproate is widely used anticonvuisant and anti-depression drug with hepatotoxic side effects. The aim of this study was to evaluated the protective role of ghrelin in liver toxicity due to sodium valproate overdose. Eighteen rats were used in this study and divided in to three groups, containing: control, sodium valproate, and sodium valproate and ghrelin groups. Nitric oxide (NO), prostaglandin E2 (PGE2) and hepatic enzymes AST (aspartate aminotransferase) and ALT (alanine aminotransferase), were assessed and histologic study of liver were performed as indicators of liver damage following sodium valproate toxicity. This study showed the ghrelin decreased ALT and AST to the normal level. Our results show that ghrelin significantly increased NO metabolites and decreased PGE2 level comparison with sodium valproate group, but had no significant change compared to the control group. we showed that ghrelin administration inhibited liver injury in rats due to sodium valproate toxicity.
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Статья научная
Background Humic acid or chitosan has been shown to increase plant growth, yield and improving physiological processes in plant, but its roles on alleviating the harmful effect of cadmium on plant growth and some physiological processes in plants is very rare. Pot experiments were conducted to study the role of 100 and 200 mg/kg dry soil from either humic acid or chitosan on counteracted the harmful effects of cadmium levels (100 and 150 mg/kg dry soil) on radish plant growth and some physiological characters Results Cadmium at 100 and 150 mg kg-1 soil decreased significantly length, fresh and dry weights of shoot and root systems as well as leaf number per plant in both seasons. Chlorophyll, total sugars, nitrogen, phosphorus, potassium, relative water content, water deficit percentage and soluble proteins as well as total amino acids contents were also decreased. Meanwhile, cadmium concentration in plants was increased. On the other hand, application of chitosan or humic acid as soil addition at the concentration of 100 or 200 mg kg-1 increased all the above mentioned parameters and decreased cadmium concentrations in plant tissues. Chitosan at 200 mg kg-1 was the most effective than humic acid at both concentrations in counteracting the harmful effect of cadmium stress on radish plant growth. Conclusion In conclusion, both natural chelators, in particular, chitosan at 200 mg/kg dry soil can increase the capacity of radish plant to survive under cadmium stress due to chelating the Cd in the soil, and then reduced Cd bio-availability.
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Статья научная
Olive oil is beneficial effects are not only related to its high content of oleic acid, but also to the antioxidant potential of its polyphenols. In this study, we assess the effects of virgin olive oil on mercuric chloride induced oxidative damage in the liver of rats. Adult male Albinos Wistar rats randomly divided into four groups, were the first was served as a control, whereas the remaining groups respectively treated with: virgin olive oil (2ml/ kg b.w; by gavage), mercuric chloride (0.5 mg/kg body weight i.p) and combination of virgin olive oil and HgCl 2. Change in liver enzyme activities, thiobarbituric acid reactive substances (TBARS) level, antioxidants and reduced glutathione (GSH) contents were determined after 2 weeks of experimental period. Exposure of rats to mercuric chloride caused a significant increase the lipid peroxidation level along with corresponding decrease in the reduced glutathione and various antioxidant enzymes in liver. And increase in serum: glucose level, APL and transaminases activities and decreased in total protein and albumin levels. Furthermore, treatment with mercuric chloride caused a marked elevation of liver weight and decreased body weight. Supplementation of virgin olive oil resulted in decreased of lipid peroxidation level and in the serum: AST, ALT and APL activities were decreased along with increase in total protein, albumin and liver GSH levels. The activities of antioxidants enzymes: glutathione peroxidase (GSH-Px) and glutathione –S-transferase (GST) were also concomitantly restored to near normal level by virgin olive oil supplementation to mercuric chloride intoxicated rats. Liver histological studies have confirmed the changes observed in biochemical parameters and proved the beneficial role of virgin olive oil. The results clearly demonstrate that virgin olive oil treatment augments the antioxidants defense mechanism in mercuric chloride induced toxicity and provides evidence that it may have a therapeutic role in free radical mediated diseases.
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Статья научная
Background: Traditional medicine practitioners claimed that plant extracts are effective in the management of liver and kidney diseases in humans without scientific evidence. Thus, this study evaluated the protective effect of Alchornea cordifolia extract (ACE) and Byrsocarpus coccineus extract (BCE) against diclofenac sodium (DCF) induced oxidative stress and hepatorenal injuries in rats and compared their efficacies. Twenty four rats were divided into 4 groups with 6 rats per group. Normal saline was given to the rats in group 1 while those in groups 3 and 4 were treated with 250 mg/kg ACE and BCE respectively for 28 days by oral gavages. The rats in groups 2 to 4 were injected with 10 mg/kg DCF in the last 7 days of treatment. Blood was collected from rats, serum was separated from the blood and used for estimations of hepatorenal injury markers while the homogenized tissue supernatants were used for assays of oxidative stress markers. Results: There was a significant (p
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Protective role of sodium selenite on mercuric chloride induced oxidative and renal stress in rats
Статья научная
Backgroud: Reactive oxygen species are known to play a major role in mercuric chloride induced oxidative and renal stress. Sodium selenite as an exogenous source of selenium is used for endogenous selenoprotein synthesis to scavenge the free radicals. The study was designed to investigate the possible protective role of sodium selenite in mercuric chloride induced renal stress, by using biochemical approaches. Adult male Albinos Wistar rats were randomly divided into four groups. The first group was served as the control, the second group was given sodium selenite (0.25 mg/kg b.w), while the third group was given mercuric chloride (0.25 mg/kg), finally, the fourth group was given combined treatment of sodium selenite and mercuric chloride for 3weeks. Results: The effects of sodium selenite on mercuric chloride induced oxidative and renal stress were evaluated by serum creatinine, urea, uric acid, billirubin levels and LDH activity, kidney tissue lipid peroxidation, GSH levels, GSH-Px, GST and catalase activities and hematological parameters. Administration of mercuric chloride induced significant increase in serum: creatinine, urea, uric acid and billirubin concentration showing renal stress. Mercuric chloride also induced oxidative stress, as indicate by decreased kidney tissue of GSH level, GSH-Px, GST, and catalase activities along with increase the level of lipid peroxidation. Furthermore, treatment with mercuric chloride caused a marked elevation of kidney weight and decreased body weight and erythrocytes, hemoglobin, hematocrit levels. Sodium selenite treatment markedly reduced elevated serum: creatinine, urea, uric acid and billirubin levels, and LDH activity and conteracted the deterious effects of mercuric chloride on oxidative stress markers and hematological parameters and atteneuated histopathological changes caused by HgCl 2 in kidney. Conclusion: Our results indicate that sodium selenite could have a beneficial role against mercuric chloride induced nephrotoxicity and oxidative stress in rat.
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Protein profile analysis by SDS-page in different elicited edible sprouts
Статья научная
Sprouts are the low processed food, having the high nutritional value and health promoting components. Various studies reported that the bioactive composition of various sprouts enhanced by elicitation with different elicitors. In the present investigation, the protein profiling by SDS-PAGE of different sprouts (mungbean, chickpea, broccoli and knolkhol) which were elicited with different elicitor viz salicylic acid (SA), methyl salicylate (MeSA) and neem leaf extract (NE) were performed. Results of the study showed that in all the sprouting seeds variety of bands were obsereved ranging from 8.31 to 112 kDa. The significant increase in intensity of protein bands was observed in 1% MeSA and 20 mM SA treatments in mung bean and chickpea sprouts, whereas, in the case of broccoli and knolkhol sprouts, only SA (200 µM) treated sprouts showed increased protein band intensity. This quantitative increase may be due to an increase in the synthesis of some proteins during elicitation. Elicitation can enhance the polyphenolic such as phenolic, flavanoids, vitamins, amino acids and glucosinolates content in sprouts by regulating the expression level of gene which are responsible for the synthesis of various enzymes which are required for the production of secondary metabolites. Moreover, our previous studies also reported that elicitation with different elicitors effectively increases the biological activities of sprouts. Therefore, from this study it may be concluded that the elicitation is an effective approach for the enhancement of nutritional and bioactive composition of seed.
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