THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Zoology)最新文献_第2页

Foraging behaviour alterations of Culex quinquefasciatus Say (Diptera: Culicidae) mosquito larvae induced by Romanomermis iyengari Welch (Nematoda: Mermithidae) parasitism 致倦库蚊(双翅目:库蚊科)幼虫寄生对其觅食行为的影响

THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Zoology) Pub Date : 1900-01-01 DOI: 10.5455/egysebz.20220301085416

H. Elbrense, A. Seif, Ibrahem B. Helal, Mohamed M. Shamseldean, Iman Elhussieny

引用次数: 0

Genes controlling appetite, gut emptying rate and metabolism in the early stage of Rotenone-induced semi-Parkinsonism in Drosophila melanogaster 鱼藤酮诱导的黑腹果蝇半帕金森病早期控制食欲、肠道排空率和代谢的基因

THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Zoology) Pub Date : 1900-01-01 DOI: 10.5455/egysebz.20220811020747

Mai Fathy, Mohamed Shaheen, S. Kholy

{"title":"Genes controlling appetite, gut emptying rate and metabolism in the early stage of Rotenone-induced semi-Parkinsonism in Drosophila melanogaster","authors":"Mai Fathy, Mohamed Shaheen, S. Kholy","doi":"10.5455/egysebz.20220811020747","DOIUrl":"https://doi.org/10.5455/egysebz.20220811020747","url":null,"abstract":"Parkinson’s disease (PD) is one of the most serious neurodegenerative diseases. PD is characterized by progressive death of dopamine producing cells in Substantia nigra pars compacta within human brain causing serious locomotor defects such as tremor as well as non-motor symptoms including metabolic deficiency and constipation. Despite the plethora of information regarding the underlying mechanisms related to locomotion impairment, signal pathways/genes involved in metabolic deficiency and constipation remain unclear. This study aims to explore the most important key genes involved in metabolic syndrome and constipation observed in PD patients. To achieve this goal, real-time polymerase chain reaction (RT PCR) of a group of genes supposed in previous findings to have a role in these syndromes in rotenone - induced PD Drosophila model was performed. One -day- old Canton S flies were fed on filter paper saturated with rotenone glucose solution(5mM rotenone in 10% glucose) at 25 ̊C for 24h.Thereafter, we focus on genes whose up-regulated expression level for all subsequent experiment. Next, metabolic parameters (total protein, lipid and carbohydrates), rate of food consumption and defecation in flies that’s knocking down in the corresponding genes were evaluated. Results revealed that feeding rate decreased when CG17544 and CG16848 genes were up-regulated; consequently those flies had reduced body weight. Meanwhile, knocking down CG16848 and CG12913. This study provide evidence that using the human homologues of these Drosophila genes for molecular docking of new pharmacotherapeutics may help to enhance the quality of life of PD patients through improving metabolism as well as defecation.","PeriodicalId":342785,"journal":{"name":"THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Zoology)","volume":"158 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":"124711088","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 Studies on Experimentally Eimeria tenella-Infected Broiler Chicken 嫩艾美耳球虫实验性感染肉鸡的组织病理学研究

THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Zoology) Pub Date : 1900-01-01 DOI: 10.5455/egysebz.20190810095333

I. Helal, S. Ahmed, S. Amer

引用次数: 3

Description of two novel Echinochasmus species (Digenea: Echinostomatidae) from the squacco heron Ardeola ralloides (Aves: Ardeidae) in Egypt: A light and scanning electron microscopic study 埃及沙苍鹭Ardeola ralloides(鸟类:沙苍鹭科)两种棘孔虫新种的描述:光镜和扫描电镜研究

THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Zoology) Pub Date : 1900-01-01 DOI: 10.5455/egysebz.20190908034421

R. Mansour, Amina Elfatah

{"title":"Description of two novel Echinochasmus species (Digenea: Echinostomatidae) from the squacco heron Ardeola ralloides (Aves: Ardeidae) in Egypt: A light and scanning electron microscopic study","authors":"R. Mansour, Amina Elfatah","doi":"10.5455/egysebz.20190908034421","DOIUrl":"https://doi.org/10.5455/egysebz.20190908034421","url":null,"abstract":"Adult forms of two new echinostomatids were recovered from small intestine of six out of ten squacco herons, Ardeola ralloides collected from March to July 2019 from Giza governorate, Egypt. These small-sized parasites had a single row of collar spines with middle dorsal interruption, vitellaria reaching the level of ventral sucker and attributed to genus Echinochasmus, namely, E. ralloides n. sp. (prevalence 40%) and E. rawashi n. sp. (prevalence 20%). The morphometric features and differential indices of two species were measured, compared and described using light and scanning electron microscopy (SEM). The body of E. ralloides n. sp. measured 959.2-1090.6 × 264.3-311.1 μm (L × MW). It was provided with 26 collar spines (9 dorsal, 2 lateral and 2 angle on each side of the dorsal collar interruption), lacked of tegumental spines except for small areas in lower left and lateral right margins of ventral sucker, and characterized by presence of many minute pores of 3.1-3.8 μm on dorsal surface of hindbody. The body of E. rawashi n. sp. measured 638.8-1173.5 × 138.8-207.7 μm (L × MW), provided with 24 collar spines (7 dorsal, 2 lateral and 2 angle on each side of the dorsal collar interruption) and had scale-like tegumental spines distributed on whole ventral surface and anterior 1/4 of dorsal surface of body, ended by up to 13 digit-like structures and measured 2.1-2.5 × 4.4-4.8 μm.","PeriodicalId":342785,"journal":{"name":"THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Zoology)","volume":"59 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":"130464321","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: 1

Description of a novel aseptate gregarine Zygocystis Stein, 1848 (Apicomplexa: Monocystinae) from earthworms (Annelida: Oligochaeta) of Egypt 埃及蚯蚓(环节动物:寡毛纲)中一种新分离的双胞虫(Zygocystis Stein, 1848)的描述

THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Zoology) Pub Date : 1900-01-01 DOI: 10.5455/egysebz.20190810085854

N. Ramadan, Samia Fawzy, Medhat Ali

引用次数: 0

Low- versus High-water level effect on subtropical benthic freshwater meiofauna 低水位与高水位对亚热带底栖淡水小型动物的影响

THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Zoology) Pub Date : 1900-01-01 DOI: 10.5455/egysebz.20221229092731

Ahmed Abada

{"title":"Low- versus High-water level effect on subtropical benthic freshwater meiofauna","authors":"Ahmed Abada","doi":"10.5455/egysebz.20221229092731","DOIUrl":"https://doi.org/10.5455/egysebz.20221229092731","url":null,"abstract":"Little is known about meiofaunal responses to Low- versus High-Water-Level (L- vs HWL) particularly in the subtropics. Meiofaunal reaction was evaluated in three locations (deeply-different) in two man-made freshwater channels in (Rowaina and Shalma) Northern Nile Egyptian delta: 50, 100, & 150, and 900, 950, & 1000 metres distances from the sluice, respectively. LWL and HWL were in January and July 2019 respectively. Eight vs ten and nine vs eleven major taxa were noted in Rowaina H- vs LWL and Shalma L- vs HWL, respectively. Taxa had different susceptibilities to L- vs HWL. Nematode, hydracarina, and oligochaetes dominated in L- and HWL, (Shalma), and in HWL (Rowaina). Whereas Nematoda, Copepod, and Oligochaeta prevailed in LWL (Rowaina). Oligochaeta biomass was generally high in LWL and HWL. Hydracarina in LWL, and Nematode & Copepod in HWL had low biomasses in Rowaina and Shalma respectively. Abundances and biomasses were significantly different within and among channels. Environmental variables were significantly different only between water levels. It could be concluded that L- vs HWL has both direct and indirect (variabilities in environmental factors) impacts on meiofauna. Channel width & morphology, may impose extra influences. This study may enhance invertebrate surveys with hydrologically different freshwater bodies.","PeriodicalId":342785,"journal":{"name":"THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Zoology)","volume":"48 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":"124957365","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

Histological and immunohistochemical studies on the effect of zinc oxide nanoparticles on the cerebellum of newborn and adult rats and the possible protective role of EDTA 氧化锌纳米颗粒对新生和成年大鼠小脑的影响及EDTA可能的保护作用的组织学和免疫组化研究

THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Zoology) Pub Date : 1900-01-01 DOI: 10.5455/egysebz.20221222014955

Siham B. Salem, S. Naggar, Ramadan M. Kandyel, M. Sharkawy

{"title":"Histological and immunohistochemical studies on the effect of zinc oxide nanoparticles on the cerebellum of newborn and adult rats and the possible protective role of EDTA","authors":"Siham B. Salem, S. Naggar, Ramadan M. Kandyel, M. Sharkawy","doi":"10.5455/egysebz.20221222014955","DOIUrl":"https://doi.org/10.5455/egysebz.20221222014955","url":null,"abstract":"Zinc oxide nanoparticles (ZnO NPs) are involved in different applications such as nutrition, while, it causes damage to different organs of the body including the brain. This study aimed to compare between the effect of ZnO NPs on newborn and adult rats´ cerebellum and to evaluate the protective role of Ethylenediaminetetraacetic acid (EDTA) against ZnO NPs toxicity. Thirty-two newborn (NBM)and thirty-two adult male (ADM) Sprague Dawley rats are used. Four groups (n = 8) of each are divided as following; Gp1: is served as control, Gp2: injected intraperitoneal (IP) with ZnO NPs (3 g/ kg). Gp3: injected IP with EDTA (500 mg/ kg) for 7 days. Gp4: injected with ZnO NPs and treated with EDTA as in Gp3. Brain tissue is prepared for biochemical and histopathological investigations. Newborn and adult rats injected with ZnO NPs showed degeneration of purkinje and granular cells in cerebellum tissue confirmed with high expression of caspase-3, while, treatment with EDTA post ZnO NPs showed lightly improvement. The body weights and relative brain weights is decrease in all the rats treated with ZnO NPs. In addition, our current study proved that the effect of ZnO NPs on ADM rats is more than on the NBM ones. Collectively, ZnO NPs injection caused damage of the cerebellum in newborn and adult rats, however, the treatment with EDTA stopped somewhat this damage.","PeriodicalId":342785,"journal":{"name":"THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Zoology)","volume":"48 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":"121123179","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

RNA/DNA ratio and expression of GHR and IGF-1 hormones: A study on seasonal variation effect on growth characterization of male Oreochromis niloticus RNA/DNA比值及GHR和IGF-1激素的表达:季节变化对雄性尼罗鱼生长特性的影响

THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Zoology) Pub Date : 1900-01-01 DOI: 10.5455/egysebz.20190715025948

I. Garawani, E. Khallaf, Alla A. Alne na ei, R. G. Elgendy

{"title":"RNA/DNA ratio and expression of GHR and IGF-1 hormones: A study on seasonal variation effect on growth characterization of male Oreochromis niloticus","authors":"I. Garawani, E. Khallaf, Alla A. Alne na ei, R. G. Elgendy","doi":"10.5455/egysebz.20190715025948","DOIUrl":"https://doi.org/10.5455/egysebz.20190715025948","url":null,"abstract":"Nile tilapia (Oreochromis niloticus) is considered as one of the most economical and popular aquaculture species. One of the main concerns in tilapia aquaculture, as well as in the wild, is growth, because of its importance for the fish population, stock assessment and their production in aquaculture. Accordingly, this study was initiated to characterize growth on molecular basis. In the same respect, RNA/DNA ratio and GHR-1/IGF-1as growth-related genes are known to be involved in weight gain alterations. To assess the correlation between growth, biochemical and hormonal conditions of fish during summer and winter. Adult male O. niloticus (100 - 250gm) were collected from Bahr Shebeen Canal, for such investigation. The results revealed that the GHR-1 and IGF-1 mRNA were directly proportional to age, length and weight. However, they were up regulated in summer than in winter. However, RNA/DNA ratio gave an observable positive correlation with age and length only with higher values in winter. In conclusion, this study supports the use of GHR-1/IGF-1as reliable indices of growth and condition of O. niloticus in their natural habitat in addition to RNA/DNA ratio assessment.","PeriodicalId":342785,"journal":{"name":"THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Zoology)","volume":"61 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":"131113730","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

Rationalized manner for controlling Sitophilus oryzae (L.) and Rhyzopertha dominica (F.) using spinosad and ivermectin biocides. 利用spinosad和伊维菌素杀菌剂防治米象和米曲蝇的合理方法。

THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Zoology) Pub Date : 1900-01-01 DOI: 10.5455/egysebz.20190708120158

T. Ismail, Mostafa E. E. Elebiary

引用次数: 1

Role of milk thistle (Silybum marianum) oil in the improvement of carbon tetrachloride-induced liver fibrosis and cirrhosis in albino mice 水飞蓟油在改善四氯化碳诱导的白化小鼠肝纤维化和肝硬化中的作用

THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Zoology) Pub Date : 1900-01-01 DOI: 10.5455/egysebz.20220404091009

Nabila Desouki, Basyouny Elfotouh, Soha Okba, Buthina Alshammari

引用次数: 0