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891.
M F Hussein N A Ahmed S M Rawi 《Comp. Biochem. Physiol. C, Comp. Pharmacol. Toxicol.》1986,84(1):165-170
Levels of the amino acids GABA and glutamine were determined in the whole brain of the white albino rat Rattus norvegicus after daily injection of 1/2, 1/4, 1/8, 1/16, 1/32 and 1/100 LD50 of cyolane. With 1/2 LD50 an increase in the level of both GABA and glutamine in the brain was recorded. Dose levels of 1/4 and 1/8 LD50 caused an increase in the level of GABA and a decrease in glutamine concentration followed by an increase from the 7th and 11th days for 1/4 and 1/8 LD50, respectively. The induced increase in GABA level started from the 2nd week for 1/16 and 1/32 LD50 and from the 3rd week for 1/100 LD50. Dose levels of 1/16, 1/32 and 1/100 LD50 caused a fluctuating increase in glutamine concentration starting from the 2nd, 3rd and 6th weeks, respectively, which was followed by a fluctuating decrease at the 9th week for 1/32 and 1/100 LD50. These findings support previous findings that the enhanced transformation of glutamic acid to GABA and glutamine is a result of a disturbance in the metabolism of the glutamic acid-GABA and the glutamic acid-glutamine systems in the rat brain. 相似文献
892.
M. Hussein Khan 《Human genetics》1972,16(4):323-327
Summary A 67 year old male revealed in the preleukaemic stage of acute myeloid leukaemia a large population of bone marrow cells with trisomy C (47,XX,C+) and a side line with 2 extra C chromosomes (48,XY,2C+). It is suggested that the presence of side lines is a reliable cytogenetic criterion for the interpolation of chemotherapy in the preleukaemic phase. The leukaemic stage was irresponsive to chemotherapy.
Supported by the Deutsche Forschungsgemeinschaft, Bad Godesberg. 相似文献
Zusammenfassung Bei einem 67 Jahre alten Mann mit akuter Myeloblastenleukämie fand sich im Knochenmark ein dominanter Stamm mit Trisomy C (47,XY,C+) und eine Sublinie mit zusätzlichen C-Chromosomen (48,XY,2C+). Es wird angenommen, daß der Nachweis von Sublinien in der präleukämischen Phase ein zuverlässiges cytogenetisches Kriterium für die Anwendung eines Chemotherapeuticums ist. Die Leukämische Phase hat nicht auf eine Chemotherapie angesprochen.
Supported by the Deutsche Forschungsgemeinschaft, Bad Godesberg. 相似文献
893.
Muhammad Akhlaq Tarek R. Sheltami Hussein T. Mouftah 《Reviews in Environmental Science and Biotechnology》2012,11(3):305-322
Sand and dust storms (SDSs) are common phenomena in many parts of the world, which offer serious hazards to the environment, economy and health. An early warning of the approaching SDS would allow people to take precautionary measures and help minimize its terrible effects on the daily life. This requires continuous monitoring of the fugitive dust, sandstorms and movements of sandbanks in a certain area. Several technologies for monitoring of the dust and other environmental changes are available, such as lookout-tower, video-surveillance, sensory information, satellite imagery, unmanned aerial vehicle and hybrid approaches. A particular technology is suitable only for detecting the certain types of SDS, but a hybrid approach can detect many types of SDS. In this paper, we provide a quick review of the techniques and technologies for SDS monitoring. We provide an overview of the data requirements, dust modeling and techniques for SDS detection and prediction. We also summarize, classify and compare different technologies for SDS detection and prediction, and propose that a hybrid approach consisting of satellite imagery and wireless sensor networks is best suitable for detecting and predicting SDSs of all types. 相似文献
894.
Hashem Mahmoud Mohamed Ranya Fysal El-Homosy Abd-Ellatef Hesham Abd-Ellatef Fathi Mohamed Salh Mohamed Younes Hussein 《Geomicrobiology journal》2017,34(3):261-266
Thirty-five yeast strains were isolated from soil samples that were collected from different locations in Upper Egypt. The purified isolates were screened for the release potassium from mica on Aleksandrov agar medium. Two yeast isolates (KSY-29 and KSY-33) showed an ability to solubilize potassium by inducing clear zones around their colonies. They were identified as Pichia anomala and Rhodotorula glutinis, respectively, based on PCR analysis of the ITSI-26S region that was amplified by NL1/NL4 species-specific primers. The amount of K released from muscovite mica in the broth culture of the yeast isolates was measured after 5, 10, 15 and 20 days of the incubation at 25°C. Both yeast isolates were very effective in releasing K of muscovite in broth culture, recording 8.11–13.21 μg/ml that were released from muscovite mica after 20 days of incubation. The inoculation of maize (Zea maize) plants with these yeast isolates under different K levels (25, 50 and 100% of recommended dose of potassium, RDK) as potassium sulfate was tested on growth and K uptake by these plants in the greenhouse. Significant increases (p < 0.05) in plant height, root and shoot dry weights as well as K uptakes by shoots and roots maize plants occurred through the inoculation with KSY-29 or KSY-33 isolates. 相似文献
895.
MS Nandhu Jes Paul Korah P Kuruvilla Anitha Malat Chinthu Romeo CS Paulose 《Journal of biomedical science》2011,18(1):5
Parkinson's disease is characterized by progressive cell death in the substantia nigra pars compacta, which leads to dopamine
depletion in the striatum and indirectly to cortical dysfunction. Increased glutamatergic transmission in the basal ganglia
is implicated in the pathophysiology of Parkinson's disease and glutamate receptor mediated excitotoxicity has been suggested
to be one of the possible causes of the neuronal degeneration. In the present study, the effects of serotonin, gamma-aminobutyric
acid and bone marrow cells infused intranigrally to substantia nigra individually and in combination on unilateral 6-hydroxydopamine
induced Parkinson's rat model was analyzed. Scatchard analysis of total glutamate and NMDA receptor binding parameters showed
a significant increase in Bmax (P < 0.001) in the cerebral cortex of 6-hydroxydopamine infused rat compared to control. Real Time PCR amplification of NMDA2B,
mGluR5, bax, and ubiquitin carboxy-terminal hydrolase were up regulated in cerebral cortex of 6-hydroxydopamine infused rats
compared to control. Gene expression studies of GLAST, ά-Synuclien and Cyclic AMP response element-binding protein showed
a significant (P < 0.001) down regulation in 6-OHDA infused rats compared to control. Behavioural studies were carried out
to confirm the biochemical and molecular studies. Serotonin and GABA along with bone marrow cells in combination showed reversal
of glutamate receptors and behaviour abnormality shown in the Parkinson's rat model. The therapeutic significance in Parkinson's
disease is of prominence. 相似文献
896.
897.
898.
A saprolegniasis occurred in cultured sockeye salmon,Onchorhynchus nerka, raised in Hokkaido, Japan. The lesions were mainly observed in the head, peduncle region and the caudal fin. All strains
isolated were morphologically classified in the genusSaprolegnia. They were identified as a new species in the genus from the characteristics of the sexual organs, and namedSaprolegnia salmonis. 相似文献