The agr operon consists of two transcriptional units RNAII and RNAIII, driven by the promoters P2 and P3, respectively. RNAII is an operon of four genes, agr BDCA, encoding AgrB responsible for processing and exporting AgrD, the AIP precursor. At threshold levels of AIP, AgrC will be autophosphorylated, leading to the phosphorylation of AgrA. Chemical structure of solonamides isolated from Photobacterium sp. Abstract Staphylococcus aureus is an opportunistic pathogen and the leading cause of a wide range of severe clinical infections. The range of diseases reflects the diversity of virulence factors produced by this pathogen. To establish an infection in the host, S.
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For more information on the journal statistics, click here. Multiple requests from the same IP address are counted as one view. Urinary Tract Infection: An Overview of the Infection and the Associated Risk Factors. Despite the fact, that both the genders are susceptible to the infection, women are mostly vulnerable due to their anatomy and reproductive physiology. Introduction Urinary tract infection is a common contagion among men and women but the incidence is quite high among women due to their physiology. In simple terms, it can be referred as a condition which women will certainly encounter during the span of their life time and the prevalence is higher among women during pregnancy.
Researchers all around the globe are making efforts to elucidate the significance of biofilm as a prime source of infection. It is a widely accepted fact that pregnancy is one of the crucial periods and lack of essential care can lead to adverse outcomes. There are several infections that can lead to pregnancy related complications and one of those is the urinary tract infection which invades the lower and the upper urinary tracts. The whole urinary system comprising of the parts of the urinary tract is at risk as the infection can affect any part of the urinary tract.
Figure 1 depicts the urinary system comprising of the various parts of the urinary tract including the renal artery and vein, kidneys, bladder, ureter, urethra and provision for urine exit. Kidneys are the organs of utmost significance and are known to perform crucial regulatory functions. Figure 1: Outline of Female reproductive system . The shorter length of the urethra in women enhances the scope for the pathogen to invade the bladder resulting in bladder infection. It is understood that the infection targets the different parts of the urinary tract and as a consequence results in the contagion of the lower and the upper urinary tracts.
The infection is named based on the site of infection. The infection of urethra and ureter are referred to as urethritis and ureteritis respectively where as cystitis and phylonephritis corresponds to bladder and kidney infections . Uncomplicated and complicated urinary tract infection: This is a consequence of bacterial infection and the prevalence is higher in women than men. This includes the common form of the infection like the cystitis and phylonephritis which affects the lower and the upper tracts leading to bladder and kidney infections. Recurrent urinary tract infection: This is a common phenomenon that is observed among women who have experienced uncomplicated UTIs and they are classified as re-infection and relapse. Major cases of UTIs are referred to as re-infections and the condition is encountered by the patient after several weeks of antibiotic treatment.
The bacterial count is an important parameter to signify the presence of symptomatic and asymptomatic UTIs. The most common pathogen known for conferring the infection is E. UTI can be manifested as asymptomatic or symptomatic infection based on the presence and absence of the symptoms . Hence symptoms enhance the diagnosis process among young healthy women. The infection is less common in children. Cystitis: This is commonly called as lower urinary tract infection or bladder infection and affects the bladder.
Cystitis is further classified based on the etiology and therapeutic approach and traumatic cystitis considered as the common form of cystitis among females causing the bruising of the bladder. This is often followed by bacterial cystitis. The coliform bacteria are transferred to the bladder from the bowel through the urethra. Phylonephritis: This is commonly referred to as upper urinary tract infection and affects the kidneys.