Reactive oxygen species, though, are essential as they are involved in the immune response against pathogens.Įxamples of reactive oxygen species are peroxides, singlet oxygen, superoxide, and hydroxyl radical. In humans, it is presumed to be involved in the development of cancers, Alzheimer’s disease, vitiligo, autism, atherosclerosis, etc. An excessive amounts of reactive oxygen species could lead to oxidative stress, which is defined as a disturbance caused by the accumulation of reactive oxygen species A highly oxidized environment inside the cell manifests when the biological system is unable to detoxify reactive intermediates. This is a part of the normal human desire to be perceived in the best possible light, and not be judged in a negative way. They are produced as a stress response of the cell to these factors. Reactivity refers to the human tendency to change their behavior when they know that they are being watched. In cell signaling, they may act as cellular messengers and cause disruptions in the system. Some of the factors that increase their level are heat, metal toxicity, nutrient deficiency, UV radiation, ionizing radiation, etc. An increase of reactive oxygen species, for instance, could be damaging to the cell structures and biomolecules (e.g. They have an effect in homoeostasis and cell signaling, and associated with certain manifestation of diseases. In biological systems, the presence of reactive oxygen species affects metabolic activities of the cell. By reactive, it means that the oxygen has an unpaired electron. Reactive oxygen species are molecules and ions containing reactive oxygen. Chemically reactive molecules and ions of oxygen with an unpaired electron
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