Histamine Collection

Basophil white blood cell. Coloured transmission electron micrograph (TEM) of a basophil white blood cell. Basophils are the smallest and rarest of the white blood cells

Cross section biomedical illustration of mast cell releasing histamine due to reaction with allergens

Surrounding tissue becomes inflamed causing several systemic effects, such as vasodilation, mucous secretion, nerve stimulation and smooth muscle contraction

Antihistamine in histamine receptors blocking the allergic reaction

Artistic representation of the immune systems reaction to bacteria invading the tissues

Conceptual image of mast cells

Microscopic view of a mast cell. Mast cells are found resident in tissues throughout the body, particularly in association with structures such as blood vessels and nerves

Mast cell releasing histamine due to allergic reaction

Microscopic view of cell and antibody

Conceptual image of Basophils. Basophils are part of your immune system that normally protects your body from infection, but can also be partly responsible for your asthma symptoms

Microscopic view of a mast cell found in connective tissue that contains numerous basophilic granules and releases substances such as heparin and histamine in response to injury

Basophil white blood cell, TEM
Basophil white blood cell. Transmission electron micrograph (TEM) of section through a circulating basophil cell. Basophils are the smallest and least common of the white blood cells

Mast cells, light micrograph
Mast cells. Light micrograph of several mast cells (pink rounded objects). These leucocytes (white blood cells) contain the chemical mediators histamine, serotonin and heparin

Urtica dioica, stinging nettle
A herb which has various medicinal benefits and produces tiny hairs that sting when in contact with skin due to the presence of histamine and formic acid

Stinging Nettle (Urtica dioica) stung human wrist, Suffolk, England, may

False colour TEM of a single basophil
False-colour transmission electron micrograph (TEM) of a single basophil, a type of white blood cell. Basophils are the least common of the white cells

Mast cell, SEM
Mast cell, coloured scanning electron micrograph (SEM). Mast cells are a type of white blood cell that are found in connective tissue

SEM of a human mast cell
False-colour transmission electron micrograph of a human mast cell or mastocyte. Mast cells are found in connective tissue and form part of the bodys immune system

Mast cell, TEM
Mast cell, coloured transmission electron micrograph (TEM). Mast cells are a type of white blood cell found in connective tissue

Basophil white blood cells, artwork
Basophil white blood cells. Computer artwork of basophil white blood cells, showing their lobed nuclei (red). Basophils are the smallest and least common of the white blood cells

Histamine allergic reaction, diagram
Histamine allergic reaction. Diagram showing the process that leads to the release of histamine during an allergic reaction. Cells called mast cells (orange) mediate this response

Allergic immune response, artwork
mast cell reponse: Bacteria (blue) bounds to a mast cell (White ball) and histamine (orange) was triggered

Allergic response, artwork
Allergic response. Computer artwork showing the process that produces an allergic reaction. Antigens (blue), such as pollen

Histamine molecule. Computer model showing the structure of a molecule of histamine. Atoms are colour-coded (carbon: dark grey, hydrogen: light grey, nitrogen: blue)

Histidine amino acid
Histidine. Computer model of a molecule of the amino acid histidine (C6. H9. N3.O2). Atoms (solid tubes) are colour-coded: carbon (green), oxygen (red), hydrogen (grey) and nitrogen (blue)

Antihistamine drug crystals, SEM
Antihistamine drug crystals, coloured scanning electron micrograph (SEM). Antihistamines block the effect of the chemical histamine

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Histamine: Unveiling the Mysterious Messenger of Allergic Reactions In the intricate world of our immune system, histamine plays a pivotal role as a messenger molecule. Derived from amino acids, this small organic compound is responsible for triggering various physiological responses when released by mast cells and basophil white blood cells. Imagine a sunny day in Suffolk, England, where an innocent encounter with Stinging Nettle leaves someone with an itchy and swollen wrist. This uncomfortable reaction occurs due to histamine release from mast cells after contact with allergens like those found in plants such as Urtica dioica. Biomedical illustrations reveal the cross-section view of how mast cells react to allergens by releasing histamine into surrounding tissues. As histamine floods these areas, inflammation ensues, causing systemic effects that can range from itching and redness to more severe symptoms like difficulty breathing or low blood pressure. Thankfully, science has developed antihistamines that block allergic reactions by binding to histamine receptors. These medications provide relief by preventing excessive histamine activity and reducing inflammation caused by allergies. Artistic representations depict the immune system's response when bacteria invade tissues. Mast cells become activated once again, releasing their stores to combat the intruders alongside other defense mechanisms orchestrated by our body's complex immunity network. Microscopic views offer glimpses into the fascinating world of mast cells – specialized immune cells abundant in connective tissue – revealing their distinctive appearance and highlighting their crucial role in allergy-related processes. These images showcase how these tiny warriors release histamine upon encountering allergens or antibodies bound specifically to them. Basophils also contribute significantly to our understanding of allergic reactions involving histamine release. Conceptual images portray these unique white blood cells actively participating in immune responses against invading pathogens or reacting sensitively during allergic episodes triggered by external stimuli. Histamine remains an enigmatic molecule whose actions have both protective roles within our immune system and the potential to cause discomfort during allergic reactions.