Medical
Sara Amini; Amir Hossein Omidi; Hamed Afkhami; Hoda Sabati; Amin Mohsenzadeh; Atyieh Soleymani; Mohammad Ali Zonobian; Negin Ghanbarnejad; Mohammad Reza Mohammadi
Abstract
Staphylococcus aureus is one of the most common infectious bacterial species and one of the agents of community-acquired infections (CAIs) and hospital-acquired infections (HAIs). Aminoglycosides are potent antibactericidal agents often used together with Beta Lactams or Glycopeptides, especially in ...
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Staphylococcus aureus is one of the most common infectious bacterial species and one of the agents of community-acquired infections (CAIs) and hospital-acquired infections (HAIs). Aminoglycosides are potent antibactericidal agents often used together with Beta Lactams or Glycopeptides, especially in treating Staphylococcal endocarditis. The present research aimed to determine the frequency of the aac (6 ́)-le-aph (2 ́ ́) gene that encodes Aminoglycoside modifying enzymes using PCR on clinical isolates of S. aureus. 115 clinical isolates of S. aureus were collected at educational hospitals in Karaj during 12 months. They were first identified by using standard biochemical and laboratory methods and, following CLSI principles and procedures, antibiotic sensitivity patterns of all isolates were obtained using the disc diffusion method. Moreover, using agar dilution, the minimum inhibitory concentration was determined using the antibiotic powder Gentamycin. Finally, gene frequency was measured by employing PCR. The highest levels of resistance to Aminoglycosides were observed in Kanamycin (47.8%), Gentamycin (46.9%), and Tobramycin (46.9%), and Doxycycline and Ciprofloxacin with 50.4 and 49.5 percent respectively, were the non-Aminoglycoside antibiotics to which the highest levels of resistance were exhibited. The frequency of the aac (6 ́)-le-aph (2 ́ ́) gene was 39.1 percent. Rapid and timely detection of resistant strains seems to be necessary in selecting suitable treatment options and in preventing the spread of resistance. Furthermore, rapid identification of genes that encode AME enzymes using PCR enjoys special advantages such as high levels of precision and speed.
Medical
Mohammad Reza Mohammadi; Amir Hossein Omidi; Hoda Sabati
Abstract
SARS-CoV- 2 is the causative agent of the global pandemic, also known as Covid-19. This virus belongs to a group of coronaviruses and has affected more than ten million people across the globe, causing nearly half a million deaths worldwide. The pandemic has spread worldwide, originating in the Wuhan ...
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SARS-CoV- 2 is the causative agent of the global pandemic, also known as Covid-19. This virus belongs to a group of coronaviruses and has affected more than ten million people across the globe, causing nearly half a million deaths worldwide. The pandemic has spread worldwide, originating in the Wuhan Hubei province of China in 2019. The disease is a significant challenge as there is no antiviral treatment. This review will address current trends and emerging new methods for detecting SARS-CoV-2 in the laboratoryat present. Reverse transcriptase PCR or RT-PCR is the gold standard for detecting SARS-CoV-2 disease. The seroprevalence of Covid-19 is performed using antibody detection tests using ELISA and antigen detection as rapid tests. In clinical practice, preliminary disease identification is made based on Chest radiographs, computed tomography, and positron emission tomography (PET) scans. As the pandemic has progressed, newer methods of detection like CRISPR, nanotechnology-enabled solutions, and biosensors have emerged as new methods of detecting SARS-CoV-2.
Medical
Amir Hossein Omidi; Hoda Sabati; Sara Amini; Mohammad Ali Zonobian; Mohammad Reza Mohammadi
Abstract
Staphylococcus aureus is gram-positive cocci, which is consistently one of the four causes of hospital infections. S. aureus is a member of the normal nasal and intestinal flora in 30-50% of the population. But this organism is carried in almost 90% of the clinical staff of hospitals. S. aureus is an ...
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Staphylococcus aureus is gram-positive cocci, which is consistently one of the four causes of hospital infections. S. aureus is a member of the normal nasal and intestinal flora in 30-50% of the population. But this organism is carried in almost 90% of the clinical staff of hospitals. S. aureus is an important cause of a wide variety of infectious diseases in humans. This bacterium often causes infections such as endocarditis, bacteremia, and pneumonia. S. aureus species are typically resistant to a large number of drugs. These bacteria are able to sustain and grow properly in the hospital environment and are easily transmitted to people who have weak immune systems. So far, methicillin-resistant S. aureus (MRSA) has been limited to hospitals, but with the increase in skin and soft tissue infections and necrotizing pneumonia in younger patients, methicillin-resistant staphylococci in the community (CA-MRSA) has spread throughout the world.
Medical
Mohammad Reza Mohammadi; Mahram Ali Mehran; Amir Hossein Omidi; Mohammad Hadi Hassani
Abstract
Tuberculosis is a contagious infectious disease. This disease is called tuberculosis and is abbreviated as TB. Tuberculosis is one of the most important infectious diseases of this century, which can involve all the organs of the body, but the lungs are most affected by tuberculosis. The occurrence of ...
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Tuberculosis is a contagious infectious disease. This disease is called tuberculosis and is abbreviated as TB. Tuberculosis is one of the most important infectious diseases of this century, which can involve all the organs of the body, but the lungs are most affected by tuberculosis. The occurrence of 10 million new cases of tuberculosis and the treatment of only two-thirds of them, which unfortunately was incomplete in more than 50% of cases, shows the depth of the disaster in these years. The occurrence of three epidemics of this disease in the last two decades shows that the prospect of controlling tuberculosis soon is very uncertain. Today, more than 8 million people are infected with this disease in the world every year, and until now, one-third of the world's people have been infected with the germ of tuberculosis without feeling sick. Tuberculous peritonitis is an uncommon disorder; sometimes, it is not considered in the initial evaluation of ascites. A negative 5-TU PPD test, or a low level of ascitic fluid protein, can mistakenly divert attention from tuberculosis. Tuberculosis peritonitis can be fatal if not diagnosed in time. Here we report a 67-year-old patient who was confirmed to have tuberculous peritonitis after clinical examination and laboratory diagnosis. The patient recovered after diagnosis with prescribed drugs.
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