Biomarkers play a critical role in the identification and treatment of breast cancer patients. As a result, BRCA1/2 mutation testing is used to estimate risk in families with a high breast and ovarian cancer frequency. For decades, it has been known that certain families had a higher risk of breast cancer. Although abnormalities in a variety of genes have been linked to breast cancer, BRCA1 and BRCA2 are the well-studied. Both BRCA1 and BRCA2 are tumour suppressor genes that play a role in double-stranded DNA repair. As a result, these genes play a crucial role in protecting DNA integrity. Despite the fact that both genes are involved in DNA repair, their functions are unique and do not overlap. BRCA1/2 germline testing is now standard practise for assessing risk in families with a high breast or ovarian cancer frequency.
Objectives: Papillary thyroid carcinoma (PTC) is the most common malignancy of thyroid. We aimed to investigate the association of let-7f, miR-146b-5p, miR-34b, miR-16 and miR-877-5p expression in blood circulation and tumor with aggressiveness of PTC. Methods: A total of 18 patients with aggressive PTC and 18 patients with non-aggressive PTC were studied. The microRNAs expressions were evaluated using real-time PCR. Fold changes (FC) of the miRs in aggressive PTC patients were calculated via calibration with mean of expression of the miRs in non-aggressive groups. Results: MiR-16 showed significant up regulation in blood (FC=2.85; P=0.024), miR-34 showed significant down regulation in blood (FC=0.19; P<0.001) and tumor tissue (FC=0.19; P<0.001), miR-146 showed significant up regulation in blood (FC=48.10; P<0.001) and tumor tissue (FC=60.61; P<0.001), miR-877 showed significant down regulation in blood (FC=0.22; P<0.001), and let-7 showed significant down regulation in blood (FC=0.09; P<0.001) and tumor tissue (FC=0.13; P<0.001). Conclusion: In general, our study in an Iranian population supported the previous results. Up regulation of miR-146 was associated with aggressiveness of PTC.
Background: Homocysteine assessment has been proposed as a potential predictive biomarker for the severity of COVID-19 infection. The purpose of this review was to analyze the correlation between the prevalence of MTHFR C677 T gene polymorphism and COVID-19 incidence and mortality worldwide. Methods: Data regarding MTHFR C677 T gene mutation were obtained from the interrogation of the Genome Aggregation Database (genomAD), which is publicly available from the web"." COVID-19 cases, including prevalence and mortality, were obtained from"" 27 August 2020. Results: There is a clear trend toward the worldwide prevalence of MTHFR 677 T and COVID-19 incidence and mortality. The prevalence of MTHFR 677 T allele in the Latino population, and the incidence and mortality for COVID-19 was higher for this ethnic group than that reported for most other populations globally. Statistical analysis showed a relatively strong correlation between C677 T and death from coronavirus. Conclusions: Genetic polymorphism of MTHFR C677 T may modulate the incidence and severity of COVID-19 pandemic infection.
Pulmonary tuberculosis (TB) persists as a great public health problem especially in the county of Korea. Later it affected to all countries and age groups. The disease of tuberculosis had become a drug resistant disease. So the country took several actions towards in the control of TB. The lungs in human body infect severely and make the infected to cough all day restlessly. This drug resistant disease leads the patient to die gradually. World Health Organization had been taking many steps in the control of the Disease of TB. Now-a-days many medicines are available in the market. The scientists and medicals groups had invented medicines for this fatal disease. Now all the people had awareness towards of this TB and it symptoms. The life span of patient can be improved by using the medicines and it can be cured in the span of years.
Microarray study of gene expression profiling Treatment with drugs for microarray analysis: Prior to therapy, HFLS-RA cells were seeded in 75 cm2 culture flasks for 24 hours. MTX IC50 concentrations were used to treat the cells.
With the development of molecular marker technology in the 1980s, the fate of plant breeding has changed. Different types of molecular markers have been developed and advancement in sequencing technologies has geared crop improvement. To explore the knowledge about molecular markers, several reviews have been published in the last three decades; however, all these reviews were meant for researchers with advanced knowledge of molecular genetics. This review is intended to be a synopsis of recent developments in molecular markers and their applications in plant breeding and is devoted to early researchers with a little or no knowledge of molecular markers. The progress made in molecular plant breeding, genetics, genomic selection and genome editing has contributed to a more comprehensive understanding of molecular markers and provided deeper insights into the diversity available for crops and greatly complemented breeding stratagems. Genotyping-by-sequencing and association mapping based on next-generation sequencing technologies have facilitated the identification of novel genetic markers for complex and unstructured populations. Altogether, the history, the types of markers, their application in plant sciences and breeding, and some recent advancement in genomic selection and genome editing are discussed.
Some of the modern and most useful genetic molecular markers obtained in the recent era are RAPD, RFLP, and AFLP. All these DNA molecules are amplified after being cut by the restriction enzyme present in the restriction site. The DNA molecules thus cut are used to decode several pieces of information starting from parental linkage to finding a criminal. Just like with time science is evolving as a whole so as the biology of markers these markers are a boon to modern science and thus they are the shining stone for research in the field of molecular markers.
The world of biological science has found out different substances having different properties to be used for purpose of diagnostic, treatment, prognostic, and exposure. These elements are found to exist in our cerebrospinal fluid, serum, biopsy, bronchoalveolar lavage, plasma, and nucleic acids. Hence, it can be said that the range of molecular biomarkers ranges from nucleic acid to a complete protein. The search for novel biomarkers is continuing daily through modes of several omic technologies with better efforts from scientist all around the globe as these biomarkers provides tremendous support for diagnostic and consequently treatment purpose. The whole domain of biomarker is subdivided into four basic groups which include, chemical, DNA, protein, and karyotypic. Data obtained from Reports suggest that a total number of biomarkers present are subdivided into 1089 chemical biomarkers, 142 protein biomarkers, 26374 genetic biomarkers, and 154 karyotypic biomarkers. It has also been that cancer cells themselves can produce biomarkers and in some cases, other cells affected somewhat even indirectly by cancer can serve as a molecular biomarker. Urine is one of the abundantly available non-invasive biological fluids. It is one of the most important sources for understanding the proper working of the biomarker. Any deviation from the normal condition of the urine signifies some change in the metabolic or physiological state of the body. A significant change in texture, odor, and foam formation of urine has been observed during different physiological misbalance and metabolic malfunction. In patients suffering from jaundice, a significant change in the texture of urine is observed thus it can be said that in such cases urine acts as a biomarker for the detection of hepatitis.
The field of pediatrics has been acknowledged since early eras, comprising references from the works of Hippocrates. Children are prone to a number of diseases like adults, frequently leading to clinical treatment that uses the same drugs and biological products. Use of medications in children has a long and storied past from exposure to tetanus tainted diphtheria toxin, through the sulfanilamide pediatric formulation tragedy and the in utero exposure to thalidomide. Each of these misfortunes caused in legislation to encourage the development of safe and efficacious therapeutics. Even though the level of applicable investigation has been growing, only a fraction of the obtainable treatments in adults have been sufficiently evaluated in pediatric populations to assess age-appropriate dosing, tolerability, and efficacy.
The identification, development, validation, and application of molecular biomarkers reflecting occasions from natural and endogenous openings to the determination of clinical illness have quickly extended our insight into the components of pathogenesis and have given freedoms to formulating improved devices for sickness therapy and general wellbeing counteraction. This field of examination has been most widely investigated in malignant growth, however as of late sub- molecular biomarkers mirroring the movement pathways in formative sicknesses, just as cardiovascular infection and neurological issues among others, have been quickly expanding.
