APPLICATIONS OF GENE THERAPY IN TREATING MOLECULAR DISEASES

Molecular diseases (genetic disorders) are non-infectious inheritable diseases which are usually caused by mutations that alter the normal function of a particular gene. They are different from infectious diseases such as malaria and tuberculosis which are mainly caused by pathogenic microorganisms in that genetic disorders can be passed on from affected parents to their offspring’s […]

APPLICATIONS OF GENE THERAPY IN TREATING MOLECULAR DISEASES Read More »

Gene Therapy Notes, , ,

MECHANISMS OF TRANSFER OF RESISTANCE GENES IN BACTERIA

  Below are some of the major ways through which bacteria pass on their antibiotic resistance genes (ARGs) to other susceptible non–resistant bacteria in their environment: TRANSDUCTION Transduction is simply defined as the transfer of genetic material (i.e. exogenous or foreign DNA molecule) between bacteria by bacteriophages (bacterial viruses). It is the transfer of DNA

MECHANISMS OF TRANSFER OF RESISTANCE GENES IN BACTERIA Read More »

Antibiotic Resistance / Antimicrobial Resistance (AMR), Antimicrobial Agents & Antibiotics, Pharmaceutical Microbiology, , , , , ,

GENETIC BASIS OF ANTIBIOTIC RESISTANCE

Genetic resistance of microbes to antibiotics is due to a chromosomal mutation in the bacterial DNA or acquisition of antibiotic resistance genes on plasmids or transposons from other bacteria. Bacteria are extremely ingenious in becoming resistant to antibiotics directed towards them because they are able to regulate their drug resistance genes over time. This is

GENETIC BASIS OF ANTIBIOTIC RESISTANCE Read More »

Antibiotic Resistance / Antimicrobial Resistance (AMR), Antimicrobial Agents & Antibiotics, Pharmaceutical Microbiology,

STEPS INVOLVED IN TRANSFORMING BACTERIAL CELLS

There are different types of steps involved in the transformation of a bacterial cell in gene cloning techniques. Bacterial cells are transformed when they are infused with exogenous DNA from another organism, and this makes them competent enough to express the gene product (or protein) of the gene they are carrying. Usually, the exogenous DNA

STEPS INVOLVED IN TRANSFORMING BACTERIAL CELLS Read More »

Biotechnology, Molecular Microbiology, ,

LEISHMANIASIS

Leishmaniasis is the parasitic disease caused by the protozoal organism, Leishmania. The disease affects the skin, spleen and the liver, and it is usually characterized by extensive lesions on the skin (in the mouth, throat and nose region) that sometimes leads to deformity of the affected body part. Leishmaniasis can be old world or new

LEISHMANIASIS Read More »

Public Health & Parasitic Diseases (Parasitology), , , , , , ,

METALLO-β-LACTAMASE (MBL) – detection methods

Metallo-beta-lactamases (MBLs) are beta-lactamase enzymes produced by pathogenic bacteria, and which hydrolyzes the carbapenems (e.g. imipenem, meropenem, and ertapenem) and render the antibiotics ineffective for treatment. They are encoded by genes that have been procured by pathogenic bacteria either by mutation or by horizontal gene transfer from other resistant microbes. MBLs efficiently hydrolyze all beta-lactam

METALLO-β-LACTAMASE (MBL) – detection methods Read More »

Antibiotic Resistance / Antimicrobial Resistance (AMR), Antimicrobial Susceptibility Testing (AST) & Antibiogram, Microbe Lab, Pharmaceutical Microbiology, , ,

EXTENDED SPECTRUM β-LACTAMASE (ESBL) – detection methods

Extended spectrum beta-lactamases (ESBLs) are beta-lactamase enzymes that breakdown or hydrolyze broad-spectrum beta-lactam drugs especially the third-generation oxyimino-cephalosporins (e.g. ceftazidime, ceftriaxone and cefotaxime). There is no consensus for the actually definition of ESBLs; but the acronym “ESBL” was originally coined to reflect the expanded substrate spectrum of the earlier beta-lactamase enzymes (e.g. TEM- and SHV-enzymes).

EXTENDED SPECTRUM β-LACTAMASE (ESBL) – detection methods Read More »

Antibiotic Resistance / Antimicrobial Resistance (AMR), Antimicrobial Susceptibility Testing (AST) & Antibiogram, Microbe Lab, Pharmaceutical Microbiology, , , , , , ,

The 3 Rs (Reduction, Refinement, Replacement): Guiding Principles in the Use of Animals For Biomedical/Scientific Research

The use of laboratory animals including mice, rats, rabbits and primates for scientific/biomedical research is guided by some principles and ethical guidelines that ensure the optimum care, protection and security of animals used in scientific investigations. Animal research is a very important procedure in biomedical research through which novel drugs are tested and scientific knowledge

The 3 Rs (Reduction, Refinement, Replacement): Guiding Principles in the Use of Animals For Biomedical/Scientific Research Read More »

Cell Culture Notes, Laboratory Biosafety, Microbe Lab, Safety tips in Microbiology Lab, Techniques in Microbiology Lab, , ,