THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Zoology)最新文献_第5页

Effect of hypoxia and reoxygenation on antioxidant system in gillsof tilapia fish (Oreochromis niloticus) 缺氧和复氧对罗非鱼(Oreochromis niloticus)氧化系统的影响

THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Zoology) Pub Date : 1900-01-01 DOI: 10.5455/egysebz.20220907064204

Z. Attia, Hala Abdelazem, Iman Nada

{"title":"Effect of hypoxia and reoxygenation on antioxidant system in gills\u0000of tilapia fish (Oreochromis niloticus)","authors":"Z. Attia, Hala Abdelazem, Iman Nada","doi":"10.5455/egysebz.20220907064204","DOIUrl":"https://doi.org/10.5455/egysebz.20220907064204","url":null,"abstract":"The effect of hypoxia and reoxygenation on Nile tilapia (Oreochromis niloticus) was studied. The fish were exposed to hypoxic oxygen concentrations (2 and 0.5 mg O2 L-1) for 1 day (short term) and 30 days (long term) followed by reoxygenation for 1 day and 7 days, respectively. The activities of superoxide dismutase (SOD), catalase (CAT) and glutathione S-transferase (GST) significantly decreased in the gills of all the hypoxic groups after both short and long term of hypoxia exposures, while increased significantly below control levels after reoxygenation except that the activities of SOD and GST in the reoxygenated groups pre-exposed to short-term (2 mg O2 L-1), SOD activity in the reoxygenated group pre-exposed to long-term (0.5 mg O2 L-1), and the activities of CAT and GST in all the reoxygenated groups pre-exposed to long-term hypoxia, had no significant change compared to their respective hypoxic groups. The activities of glutathione peroxidase (GPx), glutathione reductase (GR) and xanthine oxidase (XO) significantly increased during hypoxia then decreased significantly after reoxygenation except for GPx activity in the reoxygenated group pre-exposed to short-term (2 mg O2 L-1). Malondialdehyde (MDA) concentrations significantly increased in all the hypoxic and reoxygenated groups compared to their respective controls. The significance of these alterations in enzyme activities and oxidative stress indices is discussed. In conclusion, hypoxia and subsequent reoxygenation induce oxidative stress in Oreochromis niloticus gills causing depletion of some antioxidant enzymes. Long-lasting oxidative stress can delay full recovery.","PeriodicalId":342785,"journal":{"name":"THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Zoology)","volume":"17 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134139087","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Subtropical benthic freshwater nematode response to Low versus High water level alteration 亚热带底栖淡水线虫对高低水位变化的响应

THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Zoology) Pub Date : 1900-01-01 DOI: 10.5455/egysebz.20230201023633

Ahmed Abada

{"title":"Subtropical benthic freshwater nematode response to Low versus High water level alteration","authors":"Ahmed Abada","doi":"10.5455/egysebz.20230201023633","DOIUrl":"https://doi.org/10.5455/egysebz.20230201023633","url":null,"abstract":"Quantitative and qualitative responses of subtropical benthic freshwater nematodes to changing water levels (low versus high) have not been considered before. Three distinct locations with different depths in two freshwater channels (Rowaina and Shalma) of the northern Nile delta had been chosen for this purpose. Low and High-water levels (LWL & HWL) were in January and July 2019 respectively. Nematode abundance and diversity were significantly different between water levels, locations, and their interactions. They were categorized into six feeding groups in both water levels, locations and channels (bacterivores, plant ectoparasites, fungivores, Nematovorous, omnivorous, and predators). However, bacterivorous and omnivorous disappeared during HWL in Rowaina channel. The relative dominance of the feeding groups differed between water levels, localities, and channels. Dominancy was generally higher in Shalma. Diversity pattern in Rowaina contrasted that of Shalma. Environmental variables differently influenced nematode community. It could be concluded that water level fluctuation was not the only factor determining benthic nematode abundance, diversity, and trophic categorization. Specific water body conditions affect benthic nematode community structure. Nematode communities are environmentally sensitive agent. Furthermore, the current findings might improve our understanding of aquaculture, as water level fluctuations affect benthic nematodes, which directly or indirectly affect the reared organisms.","PeriodicalId":342785,"journal":{"name":"THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Zoology)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130782609","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Impact of salinity and flaxseed oil -enriched diet on growth and some enzymeactivity of Nile tilapia Oreochromis niloticus 盐度和富亚麻籽油饲料对尼罗罗非鱼生长及部分酶活性的影响

THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Zoology) Pub Date : 1900-01-01 DOI: 10.5455/EGYSEBZ.20190425010119

Menna M. Harby, Elsie Rizk, Ibraheem Shourbagy, M. Bassiouny, M. Wafik

引用次数: 0

Insecticidal activity of four essential oils against the German, Blattella germanica (L.) and the American, Periplaneta americana (L.) cockroaches 4种精油对德国小蠊和美洲大蠊的杀虫活性研究

THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Zoology) Pub Date : 1900-01-01 DOI: 10.5455/egysebz.20220211081712

H. Elbrense, M. Aasr

引用次数: 0

The effect of stevia sweetener on diabetic nephropathy in rats 甜叶菊甜味剂对大鼠糖尿病肾病的影响

THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Zoology) Pub Date : 1900-01-01 DOI: 10.5455/egysebz.20220803073155

A. Marei, Doaa Mahmoud

引用次数: 0

Melatonin improves the anticancer effects of mesenchymal stem cell against HCC in rat 褪黑素提高间充质干细胞对大鼠肝癌的抗癌作用

THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Zoology) Pub Date : 1900-01-01 DOI: 10.5455/egysebz.20190630042451

Mohamed A. Basyony, Nabila Desouki, W. Abdo, R. A. Hegazy, Yasser M. Mohamed

引用次数: 2

Neuroprotective Effect of Chrysin in Rat Model of Parkinsons Disease: Histopathological Evidence 黄菊花素在帕金森病大鼠模型中的神经保护作用:组织病理学证据

THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Zoology) Pub Date : 1900-01-01 DOI: 10.5455/egysebz.20210723020047

A. Gaballa, H. Swelim, A. Aal, S. Eldawlatly

引用次数: 0

Histological, ultrastructural, and biochemical studies on the expected role of thyme oil on ameliorating renal toxicity induced by doxorubicin in female albino rats 百里香油改善阿霉素所致雌性白化大鼠肾毒性的组织学、超微结构和生化研究

THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Zoology) Pub Date : 1900-01-01 DOI: 10.5455/egysebz.20220507065051

E. Kandil, Y. Okdah, Ayat Moselhy

{"title":"Histological, ultrastructural, and biochemical studies on the expected role of thyme oil on ameliorating renal toxicity induced by doxorubicin in female albino rats","authors":"E. Kandil, Y. Okdah, Ayat Moselhy","doi":"10.5455/egysebz.20220507065051","DOIUrl":"https://doi.org/10.5455/egysebz.20220507065051","url":null,"abstract":"Doxorubicin is antibiotics anticancer drug which proved to be useful in treatment of cancer, but it has bad effect on healthy body organs. Thymus vulgaris (thyme) cultivated around the world for cosmetic, cooking, and medical uses. So, the present work aims to investigate the possible ameliorating effect of thyme oil on renal toxicity induced by doxorubicin. Adult female albino rats (Rattus norvegicus) were randomly divided into four groups (5 rats/group): control group, thyme group received orally 0.5 mL thyme oil/kg body weight once/week for 6 consecutive weeks, doxorubicin group received intraperitoneally 2 mg doxorubicin/kg body weight once/week for 6 consecutive weeks, and doxorubicin + thyme group received both doxorubicin and thyme oil once/week for 6 consecutive weeks. A significant rising in urea and creatinine level in the sera of rats injected with doxorubicin was recorded. Moreover, their kidney sections showed degenerated, vacuolated and little hemorrhage glomeruli, abnormal renal tubular cells, aggregation of mononuclear leucocytes and hyaline cast. Ultrastructure examination showed degenerated glomerular endothelial, untypical filtrating barrier, degenerated podocyte, mesangial cell, pathological proximal and distal tubular cell with damage microvilli. Treating rats with thyme oil after doxorubicin decreases the elevated levels of urea and creatinine. The glomeruli, Podocyte, intraglomerular mesangial cells and glomerular filtration barrier approximately restored its typical structure, the winding in Bouma’s space is disappeared. Most tubular cells have normal nuclei and cytoplasm. Thyme oil can improve renal functions, histological and ultrastructural changes induced by doxorubicin. So, it can be used to decrease its side effect on kidney.\u0000Keywords: Doxorubicin, Histology, Ultrastructure, Thyme oil, urea, creatinine.","PeriodicalId":342785,"journal":{"name":"THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Zoology)","volume":"221 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114744349","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Histopathological alterations of submandibular salivary glands in Experimental Animal Albino Rat Induced by excess vitamin A 过量维生素A诱导实验动物白化大鼠下颌下唾液腺的组织病理学改变

THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Zoology) Pub Date : 1900-01-01 DOI: 10.5455/egysebz.20190723094132

and kasheif

引用次数: 0

Comparative taxonomical studies on the Egyptian Mediterranean Squids 埃及地中海鱿鱼的比较分类学研究

THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Zoology) Pub Date : 1900-01-01 DOI: 10.5455/egysebz.20210608120218

R. Riad

引用次数: 0