In cultures of certain streptococcal strains, RNA added as a carrier for streptolysin S (SLS) was hardly degraded, owing to deficiency of extracellular RNase activity. Production of RNA-SLS into culture supernatant was markedly reduced in the RNase-deficient streptococci. Even in these RNase-less strains, guanylic-acid rich oligonucleotides, polyG or trypan blue effectively induced SLS producti...

In plants, a wide frame of physiological processes are regulated in liaison by both, nitric oxide (NO) and hormones. Such overlapping roles raise the question of how the cross-talk between NO and hormones trigger common physiological responses. In general, NO has been largely accepted as a signaling molecule that works in different processes. Among the most relevant ways NO and the NO-derived r...

Background: Exact determination between children's sleep habits and their growth could help us to prevent this risk factor of children's growth disorders. Thus this research was performed to investigate the correlation between sleep habits and growth of preschool children in Ahvaz- Iran. Materials and Methods: In this cross-sectional study, the data was obtained by using available sampling from...

  The paper uses economic and energy data analysis and econometric modeling to study the prospects and challenges of Korea’s 2003 FTA Roadmap (MOFAT 2013) in the form of potential comprehensive partnerships with its major trade and energy partners. It first reviews Korea’s international economic and trade relations in recent years with a focus on its major merchandise export destinations an...

Abstract Introduction: The negative experience of childbirth has many consequences for the mother and the baby. This study analyzed the relationship of childbirth experience with mother-infant bonding and the child's growth and development. Materials and Methods: In this cross-sectional study, the participants were 216 eligible women selected from all health centers in Zanjan City, Iran (36 h...

Background and Aim: This study aimed to compare the effects of acetone and ethanolic extracts of Plantago major (P. major) on S. mutans.   Materials and Methods: In this in vitro study, the antibacterial effects of eight different concentrations of the acetone and ethanolic extracts of P. major seed were examined on S. mutans, and the minimum inhibitory concentration (MIC) and minimum bacte...

Health service institutions of the past and thair transformation over the years, serve to explain the state of the present health-care system, particularly when the original institutions survive in some form or other to fulfill the same primary functions. With their persistence. they may affect the 'health-attitudes' of generations and orientations of the population towards a specific system of...

The mechanisms by which plants regulate levels of the phytohormone indole-3-acetic acid (IAA) are complex and not fully understood. One level of regulation appears to be the synthesis and hydrolysis of IAA conjugates, which function in both the permanent inactivation and temporary storage of auxin. Similar to free IAA, certain IAA-amino acid conjugates inhibit root elongation. We have tested th...