ارزیابی ژنوتوکسیسیتی به روش القاء میکرونوکلئی با استفاده از لاروهای آمفی بین Xenopus laevis

ارزیابی ژنوتوکسیسیتی به روش القاء میکرونوکلئی با استفاده از لاروهای آمفی بین xenopus laevis

سابقه و هدف. مخاطرات ژنوتوکسیسیتی ( سموم تاثیر گذار بر روی ژن ها ) یکی از نگرانی های سازمان های محافظ محیط زیست می باشد. ژنوتوکسین ها موادی هستند که باعث بوجود آمدن تغییرات قابل توارث در ماده ژنتیکی سلول های جنینی، اسپرماتوسیت ها و اووسیت ها، می شوند. با توجه به اینکه چنین مخاطراتی ممکن است از آب ناشی شود، برای ارزیابی آن ها انجام آزمون های آزمایشگاهی آب با استفاده از ارگانیسم هایی که در این مح...

ارزیابی آسیب‌های کروموزومی بیماران مبتلا به سرطان مری پیش و پس از رادیوتراپی با استفاده از روش آزمون میکرونوکلئی

Background: Radiotherapy can cause DNA damage in normal cells, misrepaired or unrepaired double strand breaks in DNA lead to chromosomal breaks. As a result patient experience early and late effects in normal tissue during and after radiotherapy. Cytogenetic techniques can be used as a cancer predictive assay because there is an association between chromosome abnormalities and the risk of devel...

ترتیب اعصای جانبی در دم لارو of Xenopus laevis

Normal Table of Xenopus Laevis

havioral performance, and Konorski proposes that the mental experience depends on the occurrence of particular nervous processes in a similar way as overt behavior is correlated with the activity of specific cerebral structures. In Konorski's words, "In this way, the ultimate goal of brain physiology , consisting in conclusions about the mental experiences of a subject from the electrical activ...

Cortical grafting in Xenopus laevis.

T H E amphibian egg bears a cortex as the periphery of its cytoplasm. The interpretation by Dalcq & Pasteels (1937) of experiments performed by Pasteels (1938, 1940, 1941), in which fertile eggs of Rana fusca were centrifuged or inverted, led to the suggestion that the cortex possesses properties which control the course of development to some degree. It appeared that the properties of the cort...

Antiporter in Xenopus Laevis Oocytes

The amiloride-sensitive Na + /H + antiporter in defolliculated oocytes of Xenopus laevis was characterized by measurements of H Na + influx and apparent H + efflux. Uptake of ^Na"" was linear over a 90-min incubation period and was inhibited approximately 80% with 5xlO~moll~ amiloride. Amiloride-sensitive sodium uptake was reduced following collagenase treatment or oocyte aging. Ko 5 for amilor...