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Topic Review
Synthetic Biology and Its Application in Bioremediation
Synthetic biology is a scientific field based on biology and engineering principles, with the purpose of redesigning and restructuring microorganisms to optimize or create new biological systems with enhanced features. Developing innovative, fast, safe, and cost-effective techniques for elimination of pollutants is of great importance. For this reason, the use of this discipline offers improvement of bioremediation processes. 
  • 1.6K
  • 15 Apr 2022
Topic Review
Escherichia coli Shiga Toxins
Escherichia coli (EHEC) and Shigella dysenteriae serotype 1 are enterohemorrhagic bacteria that induce hemorrhagic colitis. This, in turn, may result in potentially lethal complications, such as hemolytic uremic syndrome (HUS), which is characterized by thrombocytopenia, acute renal failure, and neurological abnormalities. Both species of bacteria produce Shiga toxins (Stxs), a phage-encoded exotoxin inhibiting protein synthesis in host cells that are primarily responsible for bacterial virulence.
  • 1.6K
  • 23 Jun 2021
Topic Review
Auditory neurons in inner ear
These neurons transmit auditory information in the form of electric signals from sensory hair cells to the first auditory nuclei of the brain stem, the cochlear nuclei. Congenital and acquired neurosensory hearing loss affects millions of people worldwide. An increasing body of evidence suggest that the primary auditory neurons degenerate due to noise exposure and aging more readily than sensory cells, and thus, auditory neurons are a primary target for regenerative therapy. A better understanding of the development and function of these neurons is the ultimate goal for long-term maintenance, regeneration, and stem cell re-placement therapy.
  • 1.6K
  • 04 Jan 2021
Topic Review
AP-1 Transcription Factors in Myeloma
Multiple myeloma (MM) is an incurable hematologic malignancy characterized by the clonal expansion of malignant plasma cells within the bone marrow. Activator Protein-1 (AP-1) transcription factors (TFs), comprised of the JUN, FOS, ATF and MAF multigene families, are implicated in a plethora of physiologic processes and tumorigenesis including plasma cell differentiation and MM pathogenesis. Depending on the genetic background, the tumor stage, and cues of the tumor microenvironment, specific dimeric AP-1 complexes are formed. For example, AP-1 complexes containing Fra-1, Fra-2 and B-ATF play central roles in the transcriptional control of B cell development and plasma cell differentiation, while dysregulation of AP-1 family members c-Maf, c-Jun, and JunB is associated with MM cell proliferation, survival, drug resistance, bone marrow angiogenesis, and bone disease. The present review article summarizes our up-to-date knowledge on the role of AP-1 family members in plasma cell differentiation and MM pathophysiology. Moreover, it discusses novel, rationally derived approaches to therapeutically target AP-1 TFs, including protein-protein and protein-DNA binding inhibitors, epigenetic modifiers and natural products.
  • 1.6K
  • 25 May 2021
Biography
Robert Noyce
Robert Norton Noyce (December 12, 1927 – June 3, 1990), nicknamed "the Mayor of Silicon Valley," was an American physicist who co-founded Fairchild Semiconductor in 1957 and Intel Corporation in 1968. He is also credited (along with Jack Kilby) with the realization of the first integrated circuit or microchip that fueled the personal computer revolution and gave Silicon Valley its name.[1][2]
  • 1.6K
  • 08 Dec 2022
Topic Review
Disorders of Sex Development
Disorders of sex development (DSDs), also known as differences in sex development, diverse sex development and variations in sex characteristics (VSC), are medical conditions involving the reproductive system. More specifically, these terms refer to "congenital conditions in which development of chromosomal, gonadal, or anatomical sex is atypical." The term has been controversial, and research has shown that affected people experience a negative impact, with the terminology impacting choice and utilization of health care providers. The World Health Organization and many medical journals still reference DSDs as intersex traits or conditions. The Council of Europe and Inter-American Commission on Human Rights have called for a review of medical classifications that unnecessarily medicalize intersex traits.
  • 1.6K
  • 09 Oct 2022
Topic Review
Podophyllotoxin
Podophyllotoxin is an aryltetralin-type lignan isolated from species of Podophyllum. Two most common sources are the rhizomes of Podophyllum peltatum (American mayapple) and Sinopodophyllum hexandrum Royle (Barberry family). The podophyllotoxin extract has been documented for its use as a laxative, and as a remedy for various medical complications such as gonorrhea, tuberculosis, menstrual disorders, psoriasis, dropsy, cough, syphilis and venereal warts.
  • 1.6K
  • 27 Apr 2021
Topic Review
QuEChERS Application to the Determination of Pyrrolizidine Alkaloids
The identification of concerning high levels of pyrrolizidine alkaloids (PAs) in a wide variety of food products has raised the occurrence of these natural toxins as one of the main current issues of the food safety field. Consequently, a regulation with maximum concentration levels of these alkaloids has been published to monitor their occurrence in several foodstuffs. According to legislation, the analytical methodologies developed for their determination must include multiresidue extractions with high selectivity and sensitivity, as a set of 21 + 14 PAs should be simultaneously monitored. However, the multiresidue extraction of these alkaloids is a difficult task due to the high complexity of food and feed samples. Accordingly, although solid-phase extraction is still the technique most widely used for sample preparation, the QuEChERS method can be a suitable alternative for the simultaneous determination of multiple analytes, providing green extraction and clean-up of samples in a quick and cost-effective way.
  • 1.6K
  • 12 May 2022
Topic Review
Olive Oil Using Gas Chromatography
Olive oil is among the most popular supplements of the Mediterranean diet due to its high nutritional value. Therefore, the authenticity of extra virgin olive oil (EVOO) and virgin olive oil (VOO) is of major importance for both financial and health-related reasons. However, at the same time, because of economical purposes, it is also one of the products most subjected to adulteration. As a result, authenticity is an important issue of concern among authorities and consumers. Especially, regarding consumers, they require high-quality food products which a real characterized botanical and geographical origin. To this end many analytical techniques able to identify geographical and botanical origin and consequently, guarantee its quality and authenticity, have been developed.
  • 1.6K
  • 26 Jul 2021
Topic Review
Application of Microbes in Pesticide Degradation
Microbes (fungal and bacterial) applications have been identified for the bio-degradation of agro-chemicals within the environment. The efficiency of microbial species to bio-degrade chemicals varies considerably. Pesticide remediation using microbes transforms harmful chemicals into nontoxic, eco-friendly, and beneficial metabolites. During pesticides decomposition, the biosorption rate for a single strain is insufficient, whereas the focus of degradation studies is rapidly turning towards microbiological consortiums, and pesticide bio-degradability is determined through pesticide components, available mechanisms, and the promiscuity of enzymes. Certain pesticides break down relatively faster than others. The slower ones are trinitrotoluene (TNT), polychlorinated biphenyl (PCBs), and pentachlorophenol (PCP). However, methomyl, pyrethroids, 1,3-dichloropropene, and atrazine can degrade faster. Axenic cultured cells are concentrated more on pesticides breakdown than microbial consortia. Earlier research has examined various microbial communities that, particularly axenic strains, may degrade chemicals quickly. During investigations, both single and a mixture of microbial strains are effective. Although axenic cells seem critical in metabolic studies, their physiology and molecular compositions are related to pesticide decomposition. The synthesis of the consortium was achieved premised on the performances of axenic colonies in pesticide degrading, and the microbial consortia became identified to have the tremendous potential.
  • 1.6K
  • 24 May 2022
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