Basic Pharmacology

Basic pharmacology examines how chemical agents interact with living systems to produce therapeutic and adverse effects. It encompasses pharmacokinetics—the processes of absorption, distribution, metabolism and excretion that determine drug concentrations in tissues—and pharmacodynamics—the biochemical and physiological actions of drugs at target sites. Central concepts include membrane permeability, protein binding, receptor affinity, dose–response relationships, potency, efficacy and therapeutic index. Drug discovery proceeds from target identification and high-throughput screening through preclinical safety and efficacy studies, followed by phased clinical trials. Variability in drug response arises from genetic factors, age, organ function, comorbidities and concurrent medications. A sound grasp of basic pharmacology underpins rational drug design, optimises dosing regimens, minimises toxicity and guides personalised therapy across diverse medical disciplines.

Research from Nature Portfolio

Systemic administration of an immunomodulatory peptide was shown to attenuate acute inflammation in murine models of carrageenan-induced paw oedema. Pretreatment with the peptide markedly reduced vascular permeability, neutrophil infiltration and pro-inflammatory cytokine levels (TNF-α, MCP-1, IL-5) in inflamed tissues. Histopathological analyses confirmed preservation of tissue architecture, suggesting potential utility of small peptides in targeting early inflammatory cascades.

Studies of saponin–cholesterol interactions in a phospholipid membrane model have provided mechanistic insight into membrane disruption by amphiphilic drugs. Differential scanning calorimetry and X-ray scattering revealed that saponin–cholesterol complexes alter lipid phase transitions, acyl-chain ordering and vesicle morphology. These findings illuminate how membrane partitioning influences drug haemolytic activity and inform the design of saponin-based drug carriers with tunable biophysical properties.

Research from all publishers

In a rodent model of temporal-lobe epilepsy induced by pilocarpine, a novel flavonoid analogue demonstrated potent anticonvulsant activity and neuroprotection. Treatment restored GABAergic markers (GAD activity, GABARα1 expression), reduced excitatory receptor subunits (GRIN1), and activated antioxidant (Nrf2/HO-1) and pro-survival (PI3K/Akt) pathways while suppressing TLR-4/NF-κB-mediated inflammation and apoptosis. These multi-target effects resulted in complete seizure suppression and 100% survival at optimal dosing.

A comprehensive review of plant-derived anticonvulsant phytochemicals highlighted numerous compounds acting on ion channels (voltage-gated sodium and calcium channels), neurotransmitter systems (GABAergic and glutamatergic receptors) and inflammatory pathways (TLR-4/NF-κB signalling). Several extracts and purified constituents achieved synergistic seizure control in preclinical models without overt toxicity, underscoring the promise of phytotherapeutics for multi-modal seizure management and drug-resistant epilepsy.

Basic Pharmacology publication trend

The graph below shows the total number of articles in basic pharmacology across all publications each year (not limited to Nature Index journals).

Technical terms

Absorption: Transfer of a drug from its site of administration into the bloodstream.

Distribution: Reversible transfer of a drug between systemic circulation and tissues.

Metabolism: Enzymatic biotransformation of drugs into more polar metabolites.

Excretion: Elimination of drugs and metabolites from the body, primarily via renal and biliary routes.

Potency: The concentration or dose of a drug required to produce 50% of its maximal effect.

Efficacy: The maximum effect achievable by a drug, irrespective of dose.

Therapeutic index: The ratio of a drug’s toxic dose to its effective dose, indicating safety margin.

Phase I metabolism: Functionalization reactions (oxidation, reduction, hydrolysis) introducing or exposing functional groups.

Phase II metabolism: Conjugation reactions (glucuronidation, sulfation, acetylation) that increase hydrophilicity.

Context-sensitive half-life: Time for plasma drug concentration to fall by 50% after stopping a continuous infusion, dependent on infusion duration.

References

1. What Should I Know About Drugs?.
2. Alloferon-1 ameliorates acute inflammatory responses in λ-carrageenan-induced paw edema in mice. Scientific Reports (2022).
3. Aescin-Cholesterol Complexes in DMPC Model Membranes: A DSC and Temperature-Dependent Scattering Study. Scientific Reports (2019).
4. Ameliorative Potential of (-) Pseudosemiglabrin in Mice with Pilocarpine-Induced Epilepsy: Antioxidant, Anti-Inflammatory, Anti-Apoptotic, and Neurotransmission Modulation. International Journal of Molecular Sciences (2023).
5. Phytotherapeutic options for the treatment of epilepsy: pharmacology, targets, and mechanism of action. Frontiers in Pharmacology (2024).