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Cocaine- and amphetamine-regulated transcript peptide (CART) is constitutively expressed in discrete regions of the mammalian central and peripheral nervous system. Immunohistochemical studies reveal a well-defined network of CART-immunoreactive (irCART) neurons organized along the sympatho-adrenal axis. Sympathetic preganglionic neurons, but not parasympathetic preganglionic neurons, in the lateral...
Allatostatins are important regulatory neuropeptides that inhibit juvenile hormone (JH) biosynthesis by the corpora allata (CA) in insects. However, to date, the structure and expression of the gene encoding allatostatins have not been reported in any species other than insects. In this study, we used a combination of a semi-nested polymerase chain reaction (PCR) and screening of a central nervous...
To identify male-specific genes that could be involved in male development, we screened a subtracted male reproductive tract library and isolated a novel gene named Mar-Mrr (M. rosenbergii male reproduction-related gene). The Mar-Mrr cDNA sequence consists of 683 nucleotides with a 333 nucleotide open reading frame, encoding putative 110 amino acids (11.7473kDa) precursor protein and a signal peptide...
Beacon is a novel peptide isolated from the hypothalamus of Israeli sand rat. In the present study, we determined the distribution of beacon in the rat brain using immunohistochemical approach with a polyclonal antiserum directed against the synthetic C-terminal peptide fragment (47–73). The hypothalamus represented the major site of beacon-immunoreactive (IR) cell bodies that were concentrated in...
Intermedin (IMD) is a novel member of the calcitonin/calcitonin gene-related peptide (CGRP) family identified from human and other vertebrate tissues. Preprointermedin can generate various mature peptides by proteolytic cleavage. Amino acid sequence analysis showed cleavage sites located between two basic amino acids at Arg93–Arg94 resulting in the production of prepro-IMD 95–147 , namely...
The omnipresent 6-kDa polypeptide relaxin (RLX) is emerging as a multifunctional endocrine and paracrine factor in a broad range of target tissues including cardiovascular tissues. To explore the pathophysiological roles of RLX in ischemic cardiovascular diseases, we studied the changes in RLX mRNA level in the myocardium and the effect of RLX supplements in rats with isoproterenol (ISO)-induced myocardial...
Intermedin (IMD) is a novel member of the calcitonin/calcitonin gene-related peptide (CGRP). The present study aimed to investigate the cardiovascular effects of IMDs (IMD 1–47 and IMD 8–47 ) in rats. Intravenous administration of 150nmol IMDs continuously decreased mean arterial pressure and inhibited cardiac function. Administration with IMDs decreased left ventricular end-systolic...
Intermedin (IMD) is a novel member of the calcitonin/calcitonin gene-related peptide (CT/CGRP) family identified from human and other vertebrate tissues. Preprointermedin can generate a 47-amino acid mature peptide (IMD 1–47 ) and a shorter 40-amino acid one (IMD 8–47 ) by proteolytic cleavage. The present study was designed to determine the protective effect of IMD on cardiac ischemia/reperfusion...
Two hypothalamic peptides, cocaine and amphetamine-regulated transcript (CART) and α-melanocyte-stimulating hormone (α-MSH), recognized as anorexigenic neuropeptides to suppress the feeding behavior, were monitored in rats fed with a high-fat (HIF) diet for 14 weeks. While half of the rats developed obesity (diet-induced obese, DIO), some did not (diet resistant, DR). Compared to the DR rats and the...
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