DNA, RNA, protein components
Basak Yavuz; Ozge Caglar Cil; Akin Cayir
Abstract
It has been aimed to compare the level of cell-free nucleic acids (DNA, RNA, and miRNA) concentrations in laryngeal cancer patients with the control group composed of healthy individuals. It has been utilized 46 patients with laryngeal carcinoma who were previously diagnosed and treated were included ...
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It has been aimed to compare the level of cell-free nucleic acids (DNA, RNA, and miRNA) concentrations in laryngeal cancer patients with the control group composed of healthy individuals. It has been utilized 46 patients with laryngeal carcinoma who were previously diagnosed and treated were included and 46 healthy individuals were included as a control group. Peripheral blood samples were obtained from all participants. DNA, RNA, and miRNA were fluorometrically measured. We applied Mann Whitney U test to compare both groups and the adjusted general lineal model to identify associations between nucleic acid concentrations and tumor stages. Circulating cell-free microRNA and RNA concentrations in the laryngeal cancer patients were significantly different (p<0.05). Most importantly, tumor stages were the main factor that altered miRNA concentration in circulation. Our findings support that circulating cell-free miRNA and RNA have potential to be associated with laryngeal cancer. Finally, cell-free miRNAs can be used as a tool to predict different stages of laryngeal cancer.
DNA, RNA, protein components
Shah Mansoor; Imran Ullah; Nisar Khan
Abstract
In Pakistan, Urinary tract infections (UTI) are increasing day by day. The study therefore was designed for isolation identification and antibiotic resistance assessment of UTI causing bacteria. Bacterial pathogens causing UTI in dogs and human are becoming more resistant to antibiotic use. To evaluate ...
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In Pakistan, Urinary tract infections (UTI) are increasing day by day. The study therefore was designed for isolation identification and antibiotic resistance assessment of UTI causing bacteria. Bacterial pathogens causing UTI in dogs and human are becoming more resistant to antibiotic use. To evaluate the diversity and antibiotic resistance of uropathogenic bacteria, a total of 80 urine samples were collected in sterile containers. A total of 15 urine samples were taken from each gender of human and dogs with UTIs and 5 from each gender of healthy human and dogs. Samples were cultured for isolation and confirmed by biochemical tests and their antibiotic resistance pattern was checked by Kirby baur disk diffusion test. Samples that were taken from UTI males, E.coli, Proteus spp., Klebsiella spp. and Staph aureus was isolated from 93%, 6.67%,20% and 53% processed samples whereas from UTI females E.coli, Proteus spp., klebsiella spp., and Staph aureus was isolated 100%,13%,33%and 40% of samples respectively. Similarly 60% Staph aureus was isolated from healthy males and females urine samples. While Samples that were taken from UTI dogs E.coli., Proteus spp., Klebsiella spp., and Staph aureus was isolated from 66.7%, 6.67%, 33% and 26.6% of processed samples whereas Samples that were taken from bitches, E.coli., Proteus spp., klebsiella spp., and Staph aureus was isolated from 73%,13%,26.6% and 26.6% of samples respectively. In case of healthy dogs and bitches urine smalpes 60% and 80% of Staph aureus was isolated. Antibiotic resistance pattern of isolates E.coli, Proteus spp., klebsiella spp. and Staph aureus from human (male and female) samples showed resistance to ceftriaxone, Levofloxecine, and mild type of resistance to ofloxacin while sensitive to ciprofloxacin and sulfamethazole.The antibiotic resistance pattern of isolates E.coli, Proteus spp., Klebsiella spp. and Staph aureus from dogs and bitches samples showed high resistance to Lincomycin and kanamycin, and lower resistance to norfloxacin and doxycyclin while sensitive to ciprofloxacin, amoxaclin.
DNA, RNA, protein components
Zahraa Khudhair Abbas-Al-Khafaji; Qassim hassan Aubais-aljelehawy
Abstract
Emerging antibiotic resistance in microorganisms particularly multidrug-resistant strains among bacteria are increasing because of misusing antibiotics as well as evolution of antibiotic resistance mechanisms. In this regard, Acinetobacter baumannii is one of the six most common multidrug-resistant microorganisms ...
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Emerging antibiotic resistance in microorganisms particularly multidrug-resistant strains among bacteria are increasing because of misusing antibiotics as well as evolution of antibiotic resistance mechanisms. In this regard, Acinetobacter baumannii is one of the six most common multidrug-resistant microorganisms in hospitals. Recently, carbapenems, as common antibiotics to treat infections of Acinetobacter have not an acceptable efficiency because of the resistance emergence to these antibiotics in many strains. In this study, resistant strains of A. baumannii were isolated and identified as an appropriate preventive strategy to reduce infections in hospitals. Disc diffusion test and PCR method were used to isolate of resistant strains and identify beta-lactamase genes of blaAmpC, blaTEM, blaVIM, and blaSHV. This study showed that these genes were contributed in antibiotic resistance with about 18.4% and ≥53.5% strains expressing all 4 genes and ≥3 genes, respectively. The blaAmpC gene is more prevalent than other genes, and this is probably due to the prevalence or rapid transfer of this beta-lactamase. However, more studies should be performed in a comparative way to isolate and identify other antibiotic-resistant bacterial strains relate to other hospitals.
DNA, RNA, protein components
Nasim Almasian-Tehrani; Masoud Alebouyeh; Shahnaz Armin; Neda Soleimani; Leila Azimi; Roozbeh Shaker-Darabad
Abstract
The main purpose of microbial typing is to evaluate the relationships between microbial isolates. Microbial typing can use for identifying the source of infection by detecting a clonal link between the strains. Moreover, it can analyze outbreaks, antimicrobial-resistant strains, and evaluate the effectiveness ...
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The main purpose of microbial typing is to evaluate the relationships between microbial isolates. Microbial typing can use for identifying the source of infection by detecting a clonal link between the strains. Moreover, it can analyze outbreaks, antimicrobial-resistant strains, and evaluate the effectiveness of control measures so, the efficiency of monitoring systems would increase. HAIs can affect hospitalized patients in all age ranges with any clinical situation, and lead to death. Molecular epidemiology is useful to determine genetic relatedness between isolated pathogens from patients, and design proper prevention plans to prevent infection through the hospital and community. Nowadays, typing methods for a wide range of bacterial strains are known as essential epidemiological tools to prevent and control infections in hospitals and communities. Although basic typing methods were more focused on phenotypic techniques like antibiogram and serotyping, new methods are based on molecular techniques including PCR-based methods and sequencing-based methods. Due to the high frequency of methods, choosing the right one for research applications seems difficult and requires basic knowledge about all of them. In this review, we aim to introduce the most useful and practical molecular typing techniques. Also, their utilization, advantages, and disadvantages were compared.
DNA, RNA, protein components
Masoud Tourang; Le Fang; Yuan Zhong; Ram Chandra Suthar
Abstract
Breast cancer is one of the most common cancers known, and it is also a significant cause of death in women. If breast cancer is diagnosed in the early stages of the disease and treated appropriately, we can see an increase in life expectancy for more than 90% of patients. Research on molecular biomarkers ...
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Breast cancer is one of the most common cancers known, and it is also a significant cause of death in women. If breast cancer is diagnosed in the early stages of the disease and treated appropriately, we can see an increase in life expectancy for more than 90% of patients. Research on molecular biomarkers with enough sensitivity and specificity can be a good solution for rapid diagnosis in the clinical stage. Meanwhile, endogenous retroviral biomarkers can have good functional benefits. Human Endogenous Retroviruses as heterochromatin fragments of the genome usually lack expression, but in several types of human cancers, including breast cancer, HERV-Kenv mRNA is significantly increased. This study used RT-PCR to detect the expression of HERV-K mRNA and tried to introduce screening tools for the early detection of breast cancer. In this case-control study, blood samples of 50 patients with hospitalized breast cancer and 50 healthy individuals were designed to evaluate the expression of HERV-Kenv mRNA using specific primers and were analyzed by RT-PCR. PCR test was optimized as a positive control using Hela cancer cell line (cervical adenocarcinoma), which expresses the HERV-Kenv gene. Studies on both patient and control groups showed that the increase in mRNA expression was positive in 64% of patients with breast cancer and negative in all healthy individuals. The results indicate an increase in the expression of endogenous human retroviruses (HERVs) in breast cancer. Because the amount of HERV-Kenv mRNA in the blood of breast cancer patients increases dramatically, it is predicted that these mobile genetic elements could be used as a diagnostic biomarker.
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