Chemical Factors

Chemical factors are substances or chemical conditions that influence biological functions, health, and disease, making them important in clinical science. They act through molecular interactions that can alter receptor signaling, enzyme activity, cellular metabolism, membrane behavior, or the stability and distribution of therapeutic compounds; effects often depend on concentration, exposure time, and local conditions such as pH. In clinical research and practice, chemical factors include endogenous metabolites, environmental exposures, biomarkers, and medications. Studying these influences helps explain disease mechanisms, interpret diagnostic measurements, predict treatment responses, identify toxicity, and support the development of safer, more effective interventions.

Chemical Factors - Related Videos

Education

JoVE Core - Anatomy and Physiology

Chemical Factors Affecting Respiration Centers

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2024

Chemical factors such as changing CO2, O2, and H+ levels in arterial blood play a critical role in influencing respiration depth and rates. These variations are detected by chemoreceptors—specialized sensors located in two primary body areas. Central chemoreceptors are found throughout the brain stem, including the ventrolateral medulla, while peripheral chemoreceptors are located in the aortic arch and carotid arteries. CO2 has a potent influence on respiration and is strictly regulated. Under...

Research

JoVE Journal - Biology
Free Sample

Rapid Synthesis and Screening of Chemically Activated Transcription Factors with GFP-based Reporters

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Cited by 11 •

2013

This protocol describes an experimental procedure for the rapid construction of artificial transcription factors (ATFs) with cognate GFP reporters and quantification of the ATFs ability to stimulate GFP expression via flow cytometry.

Factors Influencing the Rate of Chemical Reactions

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2023

A variety of factors influence the rate of chemical reactions. For a chemical reaction to happen, atoms must collide with enough energy to overcome the repulsion between their electrons. This energy is called activation energy. Factors influencing the rate of reaction either lower the activation energy or increase the likelihood of a successful collision. Concentration and Pressure: The more particles present within a given space, the more likely those particles are to bump into one another.

Factors Affecting Drug Biotransformation: Physicochemical and Chemical Properties of Drugs

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2025

A drug's physicochemical properties fundamentally influence its metabolism. For instance, a drug's molecular size and shape critically determine its interaction with enzymes and transporters — larger drugs may face difficulty reaching enzyme active sites, altering their metabolic pathways. The pKa of a drug, which establishes its ionization state, can impact its solubility and absorption, thereby influencing metabolism. The drug's acidity or basicity is essential in determining the metabolic...

Chemical Formulas

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2020

A chemical formula presents information about the proportions of atoms constituting a particular chemical compound or molecule, mainly using symbols of elements and numbers. At times other symbols, such as dashes, parentheses, brackets, commas, plus, and minus signs, are also used. A chemical formula can be one of three types – molecular, empirical, and structural. Molecular Formula The molecular formula represents a molecule or a chemical compound using chemical symbols (to indicate the...

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