Histological investigation of the effects of fenoxycarb on neurosecretory cells in the silkworm, Bombyx mori brain.

Q4 Neuroscience Invertebrate Neuroscience Pub Date : 2020-10-22 DOI:10.1007/s10158-020-00253-3

Ebru Tanriverdi O, Sedat Yelkovan

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引用次数: 1

Abstract

Fenoxycarb 0-ethyl N-(2-(4-pheoxyphenoxy)-ethyl) carbamate is the most potent juvenile hormone analogue against a variety of insect species including the silkworm Bombyx mori. In this study, the effects of fenoxycarb on silkworm Bombyx mori brain neurosecretory cells in 5th instar were investigated. Fenoxycarb (1 ng/10 µl) was applied topically along the dorsa-medial line to the animals in the spinning behavior on day 1 of the experimental group. Brains removed by dissection were histologically examined by hematoxylin eosin (hem&eosin) and paraldehyde fuchsin staining. Three types of neurosecretory cells (NSCs) were identified, NSC-1, NSC-2 and NSC-3. It was determined that cell secretions were in different density on different days. It was shown that the secretion density of cells on different days was not the same as the experimental and control groups. The fenoxycarb was found to suppress the bombyxin (insulin-like peptides) secretion of cells in the spinning behavior on day 2. Also, it stimulated the division of NSCs on the spinning behavior on day 5.

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芬诺威对家蚕脑神经分泌细胞影响的组织学研究。

苯氧威0-乙基N-(2-(4-菲氧苯氧基)-乙基)氨基甲酸酯是对多种昆虫包括家蚕最有效的幼虫激素类似物。本实验研究了苯醚威对家蚕5龄期脑神经分泌细胞的影响。实验组动物在第1天有纺丝行为时，沿背中线局部施用吡虫威(1 ng/10µl)。用苏木精伊红(hem&eosin)和副醛品红染色对解剖切除的脑进行组织学检查。鉴定出3种神经分泌细胞(NSCs)，分别为NSCs -1、NSCs -2和NSCs -3。测定细胞分泌物在不同天数的密度不同。结果表明，不同天的细胞分泌密度与实验组和对照组不同。在第2天的纺丝行为中，发现苯醚威抑制了细胞分泌的bombyxin(胰岛素样肽)。此外，它还刺激了NSCs在第5天的自旋行为。

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Invertebrate Neuroscience NEUROSCIENCES-

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>12 weeks

期刊介绍： Invertebrate Neurosciences publishes peer-reviewed original articles, reviews and technical reports describing recent advances in the field of invertebrate neuroscience. The journal reports on research that exploits the simplicity and experimental tractability of the invertebrate preparations to underpin fundamental advances in neuroscience. Articles published in Invertebrate Neurosciences serve to highlight properties of signalling in the invertebrate nervous system that may be exploited in the field of antiparisitics, molluscicides and insecticides. Aspects of particular interest include: Functional analysis of the invertebrate nervous system; Molecular neuropharmacology and toxicology; Neurogenetics and genomics; Functional anatomy; Neurodevelopment; Neuronal networks; Molecular and cellular mechanisms of behavior and behavioural plasticity.