Quorum sensing (QS), a microbial communication mechanism modulated by acyl homoserine lactone (AHL) molecules impacts biofilm formation in bioreactors. This study investigated the effects of temperature and immigration on AHL levels biofouling anaerobic membrane The hypothesis was that immigrant community would increase AHL-mediated QS, thus stimulating low temperatures exacerbate this. We obse...

The Glasgow Verses constitutes a formal anomaly in terms of genesis, appearance and meaning. Discovered only in 1995, the verses are part of a larger text, the so-called Hunter Codex, a manuscript MaruliÊ wrote and dedicated to his friend Dmine PapaliÊ. Closer investigation revealed that this collection of poems had been entirely overlooked by traditional scholarship, and that it was neither ch...

BACKGROUND AND OBJECTIVES In present study we aimed to clone the luxI gene encoding N-acyl-homoserine synthase detected in clinical isolates of Acinetobacter baumannii and study its expression in Escherichia coli transformants. MATERIALS AND METHODS Four A. baumannii hospital strains which demonstrated strong biofilm activity were selected in this investigation. The presence of luxI gene was ...

In multispecies microbial communities, the exchange of signals such as acyl-homoserine lactones (AHL) enables communication within and between species of Gram-negative bacteria. This process, commonly known as quorum sensing, aids in the regulation of genes crucial for the survival of species within heterogeneous populations of microbes. Although signal exchange was studied extensively in well-...

The rendering of Sanskrit poetry from text to speech is a problem that has not been solved before. One reason may be the complications in the language itself. We present unique algorithms based on extensive empirical analysis, to synthesize speech from a given text input of Sanskrit verses. Using a prerecorded audio units database which is itself tremendously reduced in size compared to the col...

Abū Isḥāq Tha‘labī Nayshābūrī is an outstanding Iranian exegete of the fourth and fifth centuries LH. Tha‘labī has been so skillful in various Islamic sciences such as Arabic linguistics (including morphology, syntax (grammatical inflection), vocabulary, and rhetoric), Ḥadīth, exegesis, and qur’ānic sciences that numerous students from many near and far places attended his classes. Tha‘labī’s c...

Quorum sensing (QS) is a means of cell-to-cell communication that uses diffusible signaling molecules that are sensed by the population to determine population density, thus allowing co-ordinate gene regulation in response to population density. In Pseudomonas aeruginosa, production of the QS signaling molecule, N-acyl homoserine lactone (AHL), co-ordinates expression of key factors of pathogen...

Many pathogenic bacteria use quorum sensing (QS) systems to regulate the expression of virulence genes in a density-dependent manner. In one widespread QS paradigm the enzyme LuxI generates a small diffusible molecule of the acyl-homoserine lactone (AHL) family; high cell densities lead to high AHL levels; AHL binds the transcription factor LuxR, triggering it to activate gene expression at a v...

OBJECTIVE Similar to amblyopia in the visual system, "amblyaudia" is a term used to describe persistent hearing difficulty experienced by individuals with a history of asymmetric hearing loss (AHL) during a critical window of brain development. Few clinical reports have described this phenomenon and its consequent effects on central auditory processing. We aim to (1) define the concept of ambly...

An N-acylhomoserine lactone (AHL)-degrading bacterial strain, L62, was isolated from a sample of fermentation brine of Chinese soya sauce by using rich medium agar supplemented with soya sauce (10% v/v). L62, a rod-shaped Gram positive bacterium with amylolytic activity, was phylogentically related to Bacillus sonorensis by 16S ribosomal DNA and rpoB sequence analyses. B. sonorensis L62 efficie...