Cystic Fibrosis is an autosomal recessive genetic disease where the lung is heavily colonized by biofilm forming Pseudomonas aeruginosabacteria. Biofilm due to its thick wall and presence of extracellular polymeric substances confers bacteria with a much higher resistance against antimicrobial compounds and environmental stress. Research has revealed the presence of extracellular DNA (eDNA) in ...

introduction: group a beta-hemolytic streptococcus (gabhs) can induce pandas (pediatric autoimmune neuropsychiatric disorders associated with streptococcal infection). gabhs is the most important and common bacterial cause of acute pharyngitis in iranian children. we studied the role of gabhs (anti-streptococcal antibodies) in suspected cases of pandas in a cross sectional studies. methods: acr...

DNase I from rabbit urine was purified approx. 3600-fold to apparent homogeneity with a 41% yield by affinity chromatography utilizing DNA-cellulose; the purity of the final preparation was assessed by SDS/PAGE, lack of contamination by other nucleases and production of a monospecific antibody against the enzyme. Although the proteochemical and enzymological properties of the purified enzyme re...

Introduction: Group A Beta-Hemolytic Streptococcus (GABHS) can induce PANDAS (pediatric autoimmune neuropsychiatric disorders associated with streptococcal infection). GABHS is the most important and common bacterial cause of acute pharyngitis in Iranian children. We studied the role of GABHS (anti-streptococcal antibodies) in suspected cases of PANDAS in a cross sectional studies. Method...

Total RNA was extracted using the TRIzol reagent (Invitrogen) according to manufacturer’s instructions, whereas from caryopses it was isolated by a LiCl based method. The resulting RNA was treated with RNase-free DNase I (Promega) according to the manufacturer’s protocol. Following digestion, nucleotides were removed from RNA using a G50 sepharose buffer exchange column (Amersham). Absence of g...

Nephrotoxicity from the chemotherapeutic drug cisplatin is associated with DNA fragmentation and cell death. We have recently demonstrated that DNase I knockout mice are significantly protected against cisplatin nephrotoxicity, but it is unknown whether the DNA fragmentation that occurs is produced by DNase I or another endonuclease. In this study we assessed the expression of several endonucle...

Nucleolytic enzymes are associated with various diseases, and several methods have been developed for their detection. DNase expression is modulated in such diseases as acute myocardial infarction, transient myocardial ischemia, oral cancer, stomach cancer, and malignant lymphoma, and DNase I is used in cystic fibroma therapy. RNase is used to treat mesothelial cancer because of its antiprolife...

The large-scale production of therapeutically targeted-deoxyribonucleic acid (DNA) has passed through several challenges, postponing the tangible implementation an effective, economic and sustainable manufacturing system. Such challenges comprise need to develop integrative downstream process able extract, purify long-term preserve DNA, whilst reducing risk degradation by endonucleases that wou...