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首页> 外文期刊>European Journal of Histochemistry >Nitric oxide synthase-dependent NADPH-diaphorase activity in the optic lobes of male and female Ceratitis capitata mutants
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Nitric oxide synthase-dependent NADPH-diaphorase activity in the optic lobes of male and female Ceratitis capitata mutants

机译：一氧化氮合酶依赖性NADPH-黄递酶活性在男性和女性角膜性角膜炎突变体的视叶中

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摘要

Nitric oxide (NO) is acknowledged as a messenger molecule in the nervous system with a pivotal role in the modulation of the chemosensory information. It has been shown to be present in the optic lobes of several insect species. In the present study, we used males and females from four different strains of the medfly Ceratitis capitata (Diptera, Tephritidae): or; or,wp (both orange eyed); w,M360 and w,Heraklion (both white eyed), as models to further clarify the involvement of NO in the mutants visual system and differences in its activity and localization in the sexes. Comparison of the localization pattern of NO synthase (NOS), through NADPH-diaphorase (NADPHd) staining, in the optic lobes of the four strains, revealed a stronger reaction intensity in the retina and in the neuropile region lamina than in medulla and lobula. Interestingly, the intensity of NADPHd staining differs, at least in some strains, in the optic lobes of the two sexes; all the areas are generally strongly labelled in the males of the or and w,M360 strains, whereas the w,Heraklion and or,wp mutants do not show evident sexdependent NADPHd staining. Taken as a whole, our data point to NO as a likely transmitter candidate in the visual information processes in insects, with a possible correlation among NOS distribution, eye pigmentation and visual function in C. capitata males. Moreover, NO could influence behavioural differences linked to vision in the two sexes.
机译：一氧化氮（NO）被认为是神经系统中的信使分子，在化学感应信息的调节中起关键作用。已经证明它存在于几种昆虫的视神经叶中。在本研究中，我们使用了四种不同的地中海果蝇（Diptera，Tephritidae）品系的雄性和雌性：或，wp（均为橙色）; w，M360和w，Heraklion（均为白眼），作为进一步阐明突变体视觉系统中NO的参与及其性别活动和定位差异的模型。通过NADPH-黄递酶（NADPHd）染色比较了四种菌株的视裂中一氧化氮合酶（NOS）的定位模式，发现视网膜和神经桩层中的反应强度比髓质和小叶更强。有趣的是，至少在某些菌株中，男女两性的视裂片中NADPHd染色的强度有所不同。所有区域在或和w，M360菌株的雄性中通常都被强烈标记，而w，Heraklion和或or，wp突变株没有显示明显的性别依赖性NADPHd染色。总的来说，我们的数据表明NO是昆虫视觉信息过程中可能的递质候选者，与人头梭菌雄性的NOS分布，眼睛色素沉着和视觉功能之间可能存在相关性。而且，NO不能影响与性别有关的行为差异。

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