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کاربرد نوع شرط:
- جایگاه : پژوهشی
- مجله: Iranian Journal of Basic Medical Sciences
- نوع مقاله: Journal Article
- کلمات کلیدی: Biofilms Multidrug,resistant Probiotics Pseudomonas infections Wound healing
- چکیده:
- چکیده انگلیسی: Objective(s): Burns are the most common type of trauma with a high mortality rate worldwide. The use of modern and natural medicines, especially probiotic products, has been recently considered for cutaneous wound healing. The present study was designed to investigate the effect of Lactobacillus casei on wound healing caused by Pseudomonas aeruginosa.
Materials and Methods: In this study, the anti-adhesion activity of L. casei was examined by the glass slide method, and inhibitory substances in the cell-free supernatant (CFS) were quantified by high-performance liquid chromatography (HPLC). Following the induction of second-degree wounds, multidrug-resistant (MDR) P. aeruginosa was injected subcutaneously and directly on the burn. The animals were divided into four groups. The supernatant of L. casei was sprayed for treatment every day and wound healing was examined.
Results: Based on our findings, the supernatant of L. casei showed considerable anti-adhesion effects on P. aeruginosa. HPLC analysis indicated that the inhibitory effect of this supernatant can be due to four main organic acids including lactic acid, acetic acid, citric acid, and succinic acid. The effect of treatment on fibroblastic cells showed that the treated group by supernatant of L. casei had more fibroblastic cells compared with the non-treated group. Moreover, this supernatant increased the rate of fibroblastic cells, re-epithelialization in the wound area, and the largest thickness of the epidermis and dermis layers.
Conclusion: The present findings showed that L. casei supernatant significantly reduced inflammation and could be used to treat P. aeruginosa infection in second-degree burns.- انتشار مقاله: 08-01-1399
- نویسندگان: Mohammad Abootaleb,Narjes Mohammadi Bandari,Nazila Arbab Soleimani
- مشاهده
- جایگاه : پژوهشی
- مجله: Iranian Journal of Basic Medical Sciences
- نوع مقاله: Journal Article
- کلمات کلیدی: Biofilms Multidrug,resistant Probiotics Pseudomonas infections Wound healing
- چکیده:
- چکیده انگلیسی: Objective(s): Burns are the most common type of trauma with a high mortality rate worldwide. The use of modern and natural medicines, especially probiotic products, has been recently considered for cutaneous wound healing. The present study was designed to investigate the effect of Lactobacillus casei on wound healing caused by Pseudomonas aeruginosa.
Materials and Methods: In this study, the anti-adhesion activity of L. casei was examined by the glass slide method, and inhibitory substances in the cell-free supernatant (CFS) were quantified by high-performance liquid chromatography (HPLC). Following the induction of second-degree wounds, multidrug-resistant (MDR) P. aeruginosa was injected subcutaneously and directly on the burn. The animals were divided into four groups. The supernatant of L. casei was sprayed for treatment every day and wound healing was examined.
Results: Based on our findings, the supernatant of L. casei showed considerable anti-adhesion effects on P. aeruginosa. HPLC analysis indicated that the inhibitory effect of this supernatant can be due to four main organic acids including lactic acid, acetic acid, citric acid, and succinic acid. The effect of treatment on fibroblastic cells showed that the treated group by supernatant of L. casei had more fibroblastic cells compared with the non-treated group. Moreover, this supernatant increased the rate of fibroblastic cells, re-epithelialization in the wound area, and the largest thickness of the epidermis and dermis layers.
Conclusion: The present findings showed that L. casei supernatant significantly reduced inflammation and could be used to treat P. aeruginosa infection in second-degree burns.- انتشار مقاله: 08-01-1399
- نویسندگان: Mohammad Abootaleb,Narjes Mohammadi Bandari,Nazila Arbab Soleimani
- مشاهده
- جایگاه : پژوهشی
- مجله: International Journal of Advanced Biological and Biomedical Research
- نوع مقاله: Journal Article
- کلمات کلیدی: protective antigen,Overlap Extension PCR,immune antigen,Urokinase Plasminogen Activator,B. subtilis
- چکیده:
- چکیده انگلیسی: Background:
The immune antigen of Bacillus anthracis is a protein that can attach to the surface receptor of all human cells. At the surface of cancer cells, there is a receptor that activates the uPA (Urokinase plasminogen) that do not exist in normal human cells.
Objectives:
The aim of this study was changing the location of the attachment of the PA gene by a directed mutation in order to attach only to the cancer cells.
Methods:
PA gene was extracted from the pMNA1 plasmid. The mutation on the PA gene was made by Overlap Extension PCR. The mutated segment was transferred to DH5α; the strain of Escherichia coli. With TA coning carrier. By restriction enzymes Hind III and BamH I the mutated PA gene was extracted and transferred to pWB980 and by electroporation method, it was transferred to the WB600 strain.
Results:
In this study, the mutation was occurred in sequences of PA gene by SOE PCR method resulting in a change in the genetic code of amino acid 194. The occurrence of mutation was confirmed by determining base sequences.
Conclusion:
Cancer is a severe disease that has a major impact on large groups of people which the problem of cancer is a leading cause of death across the world. One of the treatment methods of cancer is bacterial toxins if only cancer cells receive them. Therefore, these mutated PA proteins can be effective as novel therapeutic agents for the treatment of cancer.- انتشار مقاله: 08-07-1398
- نویسندگان: Mohammad Abootaleb,Narjes Mohammadi Bandari
- مشاهده
- جایگاه : پژوهشی
- مجله: International Journal of Advanced Biological and Biomedical Research
- نوع مقاله: Journal Article
- کلمات کلیدی: Real Time PCR,Biofilm,P. aeruginosa,microtiter plate,Scanning Electron Microscopy (SEM)
- چکیده:
- چکیده انگلیسی: Background:
Microorganisms attach to various surfaces and they have manufactured biofilms by production polysaccharides like PSL in P.aeruginosa. synthesis of this kind of polysaccharide has done by PSL gene cluster. The aim of this study is consideration biofilm formation which is one of the major cause antibiotic resistance
Methods:
In this study, 100 P. aeruginosa were isolated with bacteriological and biochemical methods and pslA gene detection with PCR in all of the P. aeruginosa isolated from patients Then biofilm formation checked with microtiter plate method and it showed with SEM. Finally, expression of main attachment gene pslA in 6 strains could make moderate and strong biofilm were investigated by real-time PCR assay.
Results:
In this study, 100 P. aeruginosa were isolated that these strains showed High rates of MDR. The presence pslA gene in all of the pseudomonas isolated from patients was proven. Microtiter plate method showed 24 (24%) strains could make biofilm Among 100 strains that showed with SEM. The pslA expression in strains which making moderate and strong biofilms are more than other strains
Conclusions:
Hence, for bacterial biofilm treatment is recommended: Before antibiotics are prescribed, biofilm formation by bacteria should be investigated.- انتشار مقاله: 16-03-1398
- نویسندگان: Mohammad Abootaleb,Mohammad Reza Zolfaghari,Nazila Arbab Soleimani,Nassim Ghorbanmehr,Mohammad Reza Yazdian
- مشاهده
- جایگاه : پژوهشی
- مجله: International Journal of Advanced Biological and Biomedical Research
- نوع مقاله: Journal Article
- کلمات کلیدی: 16S rRNA,Probiotic,Enterococcus,E.casseliflavus,E.gallinarum
- چکیده:
- چکیده انگلیسی: Background:
Camel milk is the most important of dairy foods. Its contains amino acids, vitamins, probiotics properties and a potential source for isolation of probiotic Lactobacillus strains. This study is aimed to identify and isolate the bacteria special Lactic Acid Bacteria in the camel milk based on the molecule methods.
Methods:
All samples were collected from camel milk in Semnan province of Iran. Initially, they were cultivated in MRS Agar. Plates were incubated by 37 °C for 48 hours. Bacteria identification was done according to interior transcription of the area 16 SrRNA. The products of PCR were successfully determined and were analyzed. Finally, a phylogenetic tree was constructed by using Clustal Omega.
Results:
The observed bacteria were gram-positive, catalase-negative rods or cocci and vancomycin-resistant. Following that they identified as E. gallinarum and E. casseliflavus by analytical results ribosomal DNA sequencing with 100% similarity. Also, a phylogenetic tree is proven the species relatedness of the Enterococcus spp.
Conclusions:
These findings showed that supporting 16S rRNA sequences is a reasonable technique for identifying Lactobacillus strains. Also, isolated bacteria are a strong candidate for using in food and pharmaceutical industry.- انتشار مقاله: 18-03-1398
- نویسندگان: Mohammad Abootaleb,Narjes Mohammadi Bandari,Nazila Arbab Soleimani
- مشاهده