Biological preparations and antibiotics

Classification of antibiotics by origin

Antibacterial agents are generally divided into three major groups depending on their method of production and origin:

• Natural (biosynthetic). These are metabolic products of specially selected strains of microorganisms. They are obtained through complex biological synthesis by culturing on nutrient media followed by multi-stage purification. The main producers are various bacteria, molds, and actinomycetes. Classic examples of such agents are penicillin and streptomycin.
• Semisynthetic. The process of their creation begins with the classical biosynthesis of a natural antibiotic. Then, the resulting molecule undergoes targeted chemical modification: specific chemical radicals are attached to the base structure. This significantly increases the pharmacological activity of the drug. This group includes oxacillin and methicillin.
• Synthetic. These drugs have no direct analogs in living nature and are created exclusively by targeted chemical synthesis. Typical representatives of this group are levomycetin and fluoroquinolones.

Division by spectrum of antimicrobial action

Depending on the breadth of coverage of pathogenic microflora, two main categories of antibacterial drugs are distinguished:

1. Narrow-spectrum antibiotics. They exhibit high activity only against a strictly limited list of microorganism species.
2. Broad-spectrum antibiotics. They are able to effectively destroy or inhibit the growth of a large number of diverse bacteria, including both gram-positive and gram-negative forms. Such universal agents include macrolides, tetracyclines, and chloramphenicol.

It is worth noting separately the features of the action of penicillins and aminoglycosides. Their main targets are predominantly gram-negative microorganisms, but they are also capable of partially affecting gram-positive flora, which determines their place in clinical practice.

Occupational factors in biological preparation manufacturing

The process of industrial manufacturing of antibiotics, vitamins, enzymes, hormones, and protein preparations is inextricably linked with the impact of various occupational factors on personnel. They are classified into four comprehensive groups:

• Biological factors. Include potential contact with pathogenic microorganisms (viruses, fungi, bacteria) and helminths. A particular occupational hazard is posed by the producer microorganisms themselves, their living cells and spores contained in the preparations. This also includes dust of plant and animal origin (particles of cotton, flax, hemp, grain, tobacco, wood, peat, hops, paper, wool, and natural silk fluff).
• Chemical factors. These include various industrial poisons and substances of biological nature obtained through chemical synthesis.
• Factors of the labor process. Work in pharmaceutical production is often associated with heavy physical overloads, prolonged forced body posture, pronounced psycho-emotional tension, and general strain on various organs and body systems.
• Physical factors. Cover a huge spectrum of impacts: electromagnetic fields (non-ionizing, electrostatic, magnetic), optical radiation (laser, infrared, ultraviolet), changes in atmospheric pressure, acoustic vibrations (industrial noise, infrasound, ultrasound), general and local vibration, fibrogenic aerosols, as well as lighting parameters and aeroions.

Impact of physical microclimate factors

Microclimate parameters are of particular importance in any production facility. The basic thermal state of a worker's body in industrial premises is determined primarily by air temperature and humidity.

An additional, yet highly significant load is created by air flow velocity and radiant energy emanating from heated or hot surfaces of industrial equipment. The specificity of the working environment lies in the fact that the physiological impact of elevated or lowered temperatures here can be significantly stronger than in normal domestic conditions. Under particularly unfavorable combinations of microclimatic parameters, the standard adaptive physiological reactions of the body can become depleted and turn into pathological states.

Class and exam questions

What else to study on this topic

• Impact of electromagnetic fields and radiation in pharmaceutical manufacturing
• Fibrogenic aerosols and respiratory protection
• Specifics of the impact of industrial poisons during the chemical synthesis of drugs
• Prevention of psycho-emotional stress and physical overloads in personnel

Prepared by WhiteCoat Pro faculty in accordance with the medical school curriculum. For educational purposes only.