Gram-negative bacteria often use N-acyl-homoserine lactones (AHLs) as signal molecules to monitor their local population densities and to regulate gene-expression in a process called "Quorum Sensing" (QS). This cell-to-cell communication allows bacteria to adapt to environmental changes and to behave as multicellular communities. QS plays a key role in both bacterial virulence towards the host ...

Bacterial communication or quorum sensing (QS) is achieved via sensing of QS signaling molecules consisting of oligopeptides in Gram-positive bacteria and N-acyl homoserine lactones (AHL) in most Gram-negative bacteria. In this study, Enterobacteriaceae isolates from Batavia lettuce were screened for AHL production. Enterobacter asburiae, identified by matrix-assisted laser desorption ionizatio...

Age-related hearing loss (AHL) typically starts from high-frequency regions of the cochlea and over time invades lower-frequency regions. During this progressive hearing loss, sound-evoked activity in spiral ganglion cells is reduced. DBA mice have an early onset of AHL. In this study, we examined synaptic transmission at the endbulb of Held synapse between auditory nerve fibers and bushy cells...

Quorum sensing is a mechanism for regulating proteobacterial gene expression in response to changes in cell population. In proteobacteria, N-acyl homoserine lactone (AHL) appears to be the most widely used signalling molecules in mediating, among others, the production of extracellular virulence factors for survival. In this work, the genome of B. cepacia strain GG4, a plasmid-free strain capab...

Clinical and pathological data from eight cases of acute haemorrhagic leucoencephalitis (AHL) confirm the previously documented devastating features of this disease. Data from 30 cases of perivenous encephalitis (PVE) associated with viral diseases reveal pathological changes ranging from lymphocytic cuffing of vessels to severe vasculitis similar to the vasculitis of AHL. Relatively few cases ...

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BACKGROUND Choosing an appropriate accounting system for hospital has always been a challenge for hospital managers. Traditional cost system (TCS) causes cost distortions in hospital. Activity-based costing (ABC) method is a new and more effective cost system. OBJECTIVE This study aimed to compare ABC with TCS method in calculating the unit cost of medical services and to assess its applicabi...

Many of the details issues Islamic theology were not present in prophetic era, so when they appeared later ages, school hadiths stood against them. They saw that studying these would harm Muslim's belief. In addition to this, are considered heresy was reported from Prophet. The School Salaf has many books warning heresies and Ahl Kalam. These characterized by textuality; Meaning it is full vers...

infection, even when challenged with comparatively low numbers of bacteria. The result is a triumph for the approach of mining bacterial metabolic diversity for applied uses. In this case, Dong et al. capitalized on the discovery that many bacteria can degrade, and so inactivate, AHLs. Earlier, the same group 5 had isolated hundreds of bacterial species from soil and screened them for the abili...

the imams of ahl al-bayt (‘a) have applied three methods in dealing with rulers as follows: taqiyyah (assimilation), armed struggle, and occultation. they have applied taqiyyah for keeping the unity among muslims and their followers. this does not mean that they have kept silent and did not care about muslims, rather they had active role in social life. an example of this active role is the ima...