What is histamine ?

What is histamine ?
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1 Answer

Answer :

: Histamine is a base substance found in wasps and wasps.
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Related questions

Can a person die if he takes eight histamine tablets ? Or what could be worse ?

Description : Can a person die if he takes eight histamine tablets ? Or what could be worse ?

Last Answer : Histamine is mainly used for colds or allergies. It is not a sleeping pill but it does cause mild drowsiness as a side effect. There is no chance of dying even after taking histamine at 8 , 10 ... asleep or fall asleep. However, it is not right to take so many medicines together without any reason.

What do histamine tablets do ?

Description : What do histamine tablets do ?

Last Answer : It is effective in nasal inflammation , runny nose , inflammation of eyes etc. If urticaria occurs after eating or touching something, it is used successfully. It is effective in pain or itching in insect bites or in response to any medication. It is also used for travel ailments and colds .

What is the function of histamine tablet ?

Description : What is the function of histamine tablet ?

Last Answer : It is effective in nasal inflammation , runny nose , inflammation of eyes etc. If urticaria occurs after eating or touching something, it is used successfully. It is effective in pain or itching in insect bites or in response to a drug. It is also used for travel ailments and colds .

Which type of white blood cells are concerned with the release of histamine and the natural anticoagulant heparin ?

Description : Which type of white blood cells are concerned with the release of histamine and the natural anticoagulant heparin ?

Last Answer : Which type of white blood cells are concerned with the release of histamine and the natural ... Eosinophils B. Monocytes C. Neutrophils D. Basophils

Assertion : Histamine is related with allergic and inflamatory reactions Reason : Histamine is a vasodilator

Description : Assertion : Histamine is related with allergic and inflamatory reactions Reason : Histamine is a vasodilator

Last Answer : Assertion : Histamine is related with allergic and inflamatory reactions Reason : Histamine is a ... If both the assertion and reason are false

What are the rarest of WBCs that release histamine and exaggerate the inflammatory response?

Description : What are the rarest of WBCs that release histamine and exaggerate the inflammatory response?

Last Answer : Need answer

What cells release histamine during allergic responses?

Description : What cells release histamine during allergic responses?

Last Answer : Need answer

Histamine is formed from histidine by the enzyme histidine decarboxylase in the presence of (A) NAD (B) FMN (C) HS-CoA (D) B6-PO4

Description : Histamine is formed from histidine by the enzyme histidine decarboxylase in the presence of (A) NAD (B) FMN (C) HS-CoA (D) B6-PO4

Last Answer : Answer : D

Zinc is involved in storage and release of (A) Histamine (B) Acetylcholine (C) Epinephrine (D) Insulin

Description : Zinc is involved in storage and release of (A) Histamine (B) Acetylcholine (C) Epinephrine (D) Insulin

Last Answer : Answer : D

Ninhydrin reaction gives a purple colour and evolves CO2 with (A) Peptide bonds (B) Histamine (C) Ergothioneine (D) Aspargine

Description : Ninhydrin reaction gives a purple colour and evolves CO2 with (A) Peptide bonds (B) Histamine (C) Ergothioneine (D) Aspargine

Last Answer : Answer : D

Histidine is converted to histamine through the process of (A) Transamination (B) Decarboxylation (C) Oxidative deamination (D) Urea cycle

Description : Histidine is converted to histamine through the process of (A) Transamination (B) Decarboxylation (C) Oxidative deamination (D) Urea cycle

Last Answer : Answer : B

Histamine causes all the following except (A) Stimulation of gastric secretion (B) Vasoconstriction (C) Pruritus (D) Increase in capillary permeability

Description : Histamine causes all the following except (A) Stimulation of gastric secretion (B) Vasoconstriction (C) Pruritus (D) Increase in capillary permeability

Last Answer : Answer : B

Histamine is synthesised in (A) Brain (B) Mast cells (C) Basophils (D) All of these

Description : Histamine is synthesised in (A) Brain (B) Mast cells (C) Basophils (D) All of these

Last Answer : Answer : D

Histidine is converted into histamine by (A) Carboxylation (B) Decarboxylation (C) Methylation (D) Hydroxylation

Description : Histidine is converted into histamine by (A) Carboxylation (B) Decarboxylation (C) Methylation (D) Hydroxylation

Last Answer : Answer : B

Histamine is formed from histidine by (A) Deamination (B) Dehydrogenation (C) Decarboxylation (D) Carboxylation

Description : Histamine is formed from histidine by (A) Deamination (B) Dehydrogenation (C) Decarboxylation (D) Carboxylation

Last Answer : Answer : C

In carcinoid syndrome the argentaffin tissue of the abdominal cavity overproduce (A) Serotonin (B) Histamine (C) Tryptamine (D) Tyrosine

Description : In carcinoid syndrome the argentaffin tissue of the abdominal cavity overproduce (A) Serotonin (B) Histamine (C) Tryptamine (D) Tyrosine

Last Answer : Answer : A

Ninhydrin with evolution of CO2 forms a blue complex with (A) Peptide bond (B) α-Amino acids (C) Serotonin (D) Histamine

Description : Ninhydrin with evolution of CO2 forms a blue complex with (A) Peptide bond (B) α-Amino acids (C) Serotonin (D) Histamine

Last Answer : Answer : B

Phenylalanine is the precursor of (A) L-DOPA (B) Histamine (C) Tyrosine (D) Throxine

Description : Phenylalanine is the precursor of (A) L-DOPA (B) Histamine (C) Tyrosine (D) Throxine

Last Answer : C

Which of the following statement(s) is/are true concerning the vascular response to injury? a. Vasoconstriction is an early event in the response to injury b. Vasodilatation is a detrimental response to injury with normal body processes working to avoid this process c. Vascular permeability is maintained to prevent further cellular injury d. Histamine, prostaglandin E2 (PGE2) and prostacyclin (PGI2) are important mediators of local vasoconstriction

Description : Which of the following statement(s) is/are true concerning the vascular response to injury? a. Vasoconstriction is an early event in the response to injury b. Vasodilatation is a ... Histamine, prostaglandin E2 (PGE2) and prostacyclin (PGI2) are important mediators of local vasoconstriction

Last Answer : Answer: a After wounding, there is transient vasoconstriction mediated by catecholamines, thromboxane, and prostaglandin F2 (PGF2a). This period of vasoconstriction lasts for only five to ten minutes. Once ... and mast cells and enhance the egress of cells and substrate into the wound and tissue

Smooth muscle relaxation is due to stimulation of which type of histamine receptors (a) H1 (b) H2 (c) H3 (d) All of the above

Description : Smooth muscle relaxation is due to stimulation of which type of histamine receptors (a) H1 (b) H2 (c) H3 (d) All of the above

Last Answer : Ans: B

Histamine (a) May be released from mast cells by a number of therapeutic agents (b) Causes sedation (c) Decreases the force of contraction of ventricular muscle (d) Can cause strong contractions of the gravid human uterus

Description : Histamine (a) May be released from mast cells by a number of therapeutic agents (b) Causes sedation (c) Decreases the force of contraction of ventricular muscle (d) Can cause strong contractions of the gravid human uterus

Last Answer : Ans: D

The most important receptor involved in cytotoxic drug induced vomiting is (a) Histamine H1 receptor (b) Serotonin 5-HT3 receptor (c) Dopamine D2 receptor (d) Opioid µ receptor

Description : The most important receptor involved in cytotoxic drug induced vomiting is (a) Histamine H1 receptor (b) Serotonin 5-HT3 receptor (c) Dopamine D2 receptor (d) Opioid µ receptor

Last Answer : Ans: B

Tachyphylaxis to many actions on repeated injection is a feature of the following autocoid (a) Histamine (b) 5-Hydroxytryptamine (c) Bradykinin (d) Angiotensin

Description : Tachyphylaxis to many actions on repeated injection is a feature of the following autocoid (a) Histamine (b) 5-Hydroxytryptamine (c) Bradykinin (d) Angiotensin

Last Answer : Ans: B

Histamine is involved as a mediator in the following pathological conditon (a) Cocaine (b) Dibucaine (c) Lidocaine (d) Procaine

Description : Histamine is involved as a mediator in the following pathological conditon (a) Cocaine (b) Dibucaine (c) Lidocaine (d) Procaine

Last Answer : Ans: B

Fall in blood pressure caused by larger doses of histamine is blocked by (a) H1 antihistaminics alone (b) H2 ANTAgonists alone (c) Combination of H1 and H2 antagonists (d) None of the above

Description : Fall in blood pressure caused by larger doses of histamine is blocked by (a) H1 antihistaminics alone (b) H2 ANTAgonists alone (c) Combination of H1 and H2 antagonists (d) None of the above

Last Answer : Ans: C

Which of the following is a selective H1 receptor agoinist ? (a) 4-methyl histamine (b) Impromidine (c) 2-Thiazolyl ethylamine (d) Mepyramine

Description : Which of the following is a selective H1 receptor agoinist ? (a) 4-methyl histamine (b) Impromidine (c) 2-Thiazolyl ethylamine (d) Mepyramine

Last Answer : Ans: C

If fever is accompanied by ________, drug toxicity is more likely than allergy and is much more serious. a) Granulocytopenia b) Thrombocytopenia c) Histamine d) Leukopenia e) Hypotension

Description : If fever is accompanied by ________, drug toxicity is more likely than allergy and is much more serious. a) Granulocytopenia b) Thrombocytopenia c) Histamine d) Leukopenia e) Hypotension

Last Answer : Ans: A

A mast cell (or mastocyte) is a resident cells of several types of tissues and contains many granules rich in_______. a) Acetylcholine b) Nicotine c) Epinephrine d) Histamine e) Histadine

Description : A mast cell (or mastocyte) is a resident cells of several types of tissues and contains many granules rich in_______. a) Acetylcholine b) Nicotine c) Epinephrine d) Histamine e) Histadine

Last Answer : Ans: D

Following mediators are involved in acute inflammation except (a) Histamine (b) Leukotrienes (c) Interferons (d) Bradykinin

Description : Following mediators are involved in acute inflammation except (a) Histamine (b) Leukotrienes (c) Interferons (d) Bradykinin

Last Answer : Ans: C

Following is an example of preformed and not lipid derived mast cell mediator of inflammatory process (a) LTC4 (b) PGD2 (c) PAF (d) Histamine

Description : Following is an example of preformed and not lipid derived mast cell mediator of inflammatory process (a) LTC4 (b) PGD2 (c) PAF (d) Histamine

Last Answer : Ans: D

â-Aminoethylimidazole is? (a) 2-methyl histamine (b) Histamine (c) 2-pyridyl ethylamine (d) 4-methyl histamine

Description : â-Aminoethylimidazole is? (a) 2-methyl histamine (b) Histamine (c) 2-pyridyl ethylamine (d) 4-methyl histamine

Last Answer : Ans: B

How many types of histamine receptors are there and what are they ?

Description : How many types of histamine receptors are there and what are they ?

Last Answer : There are three types of histamine receptors. They are H1, H2 and H3.They has different tissue distributions.

Explain in brief about histamine It is formed by the decarboxylation of amino acid histidine ?

Description : Explain in brief about histamine It is formed by the decarboxylation of amino acid histidine ?

Last Answer : It accounts for 10% of granule weight. This histamine binds to specific receptors on various target cells.

Secretion of Serotonin, heparin and histamine is the function of

Description : Secretion of Serotonin, heparin and histamine is the function of

Last Answer : mast cells.

Bacterial opsonization is mediated by? C A. histamine B. prostaglandin C. immunoglobulins D. tumor Necrosis Factor

Description : Bacterial opsonization is mediated by? C A. histamine B. prostaglandin C. immunoglobulins D. tumor Necrosis Factor

Last Answer : immunoglobulins

Polymorphonuclear neutrophil granulocytes A A. are important cells in bacterial infections B. play a role in inflammation by releasing histamine C. are important cells in neoplastic conditions D. play an important role in viral infections

Description : Polymorphonuclear neutrophil granulocytes A A. are important cells in bacterial infections B. play a role in inflammation by releasing histamine C. are important cells in neoplastic conditions D. play an important role in viral infections

Last Answer : are important cells in bacterial infections

Edema associated with decreased plasma oncotic pressure may be caused by C A. Sodium depletion B. Histamine release C. Liver disease D. None of these

Description : Edema associated with decreased plasma oncotic pressure may be caused by C A. Sodium depletion B. Histamine release C. Liver disease D. None of these

Last Answer : Liver disease

Which type of white blood cells are concerned with the release of histamine and the natural anticoagulant heparin? (a) Eosinophils (b) Monocytes (c) Neutrophils (d) Basophils

Description : Which type of white blood cells are concerned with the release of histamine and the natural anticoagulant heparin? (a) Eosinophils (b) Monocytes (c) Neutrophils (d) Basophils

Last Answer : d) Basophils

Match the following columns and select the correct option. Column-I Column - II (A) Eosinophils (i) Immune response (B) Basophils (ii) Phagocytosis (C) Neutrophils (iii) Release histaminase, destructive enzymes (D) Lymphocytes (iv) Release granules containing histamine (A) (B) (C) (D) (a) (iii) (iv) (ii) (i) (b) (iv) (i) (ii) (iii) (c) (i) (ii) (iv) (iii) (d) (ii) (i) (iii) (iv)

Description : Match the following columns and select the correct option. Column-I Column - II (A) Eosinophils (i) Immune response (B) Basophils (ii) Phagocytosis (C) Neutrophils (iii) Release histaminase, destructive enzymes (D) Lymphocytes (iv) ... (iii) (c) (i) (ii) (iv) (iii) (d) (ii) (i) (iii) (iv)

Last Answer : (a) (iii) (iv) (ii) (i)

Histamine secreting cells are found in (a) connective tissues (b) lungs (c) muscular tissue (d) nervous tissue

Description : Histamine secreting cells are found in (a) connective tissues (b) lungs (c) muscular tissue (d) nervous tissue

Last Answer : (a) connective tissues

In mammals, histamine is secreted by (a) lymphocytes (b) mast cells (c) fibroblasts (d) histiocytes.

Description : In mammals, histamine is secreted by (a) lymphocytes (b) mast cells (c) fibroblasts (d) histiocytes.

Last Answer : b) mast cells

Mast cells of connective tissue contain (a) vasopressin and relaxin (b) heparin and histamine (c) heparin and calcitonin (d) serotonin and melanin.

Description : Mast cells of connective tissue contain (a) vasopressin and relaxin (b) heparin and histamine (c) heparin and calcitonin (d) serotonin and melanin.

Last Answer : (b) heparin and histamine

Mast cells secrete (a) haemoglobin (b) hippurin (c) myoglobin (d) histamine

Description : Mast cells secrete (a) haemoglobin (b) hippurin (c) myoglobin (d) histamine

Last Answer : (d) histamine.

The most important preformed mediator of allergic reactions is/are a. Prostaglandin b. Interleukin c. Histamine d. Leukotrienes

Description : The most important preformed mediator of allergic reactions is/are a. Prostaglandin b. Interleukin c. Histamine d. Leukotrienes

Last Answer : c. Histamine

Hashimoto disease and Graves‘ disease are similar in that both a. Affect the thyroid gland. b. Affect the red blood cells. c. Are forms of cellular hypersensitivity? d. Are accompanied by histamine release.

Description : Hashimoto disease and Graves‘ disease are similar in that both a. Affect the thyroid gland. b. Affect the red blood cells. c. Are forms of cellular hypersensitivity? d. Are accompanied by histamine release.

Last Answer : b. Affect the red blood cells.

During the course of a cellular hypersensitivity a. Antibodies react with antigens in tissues. b. Serotonin and histamine are released by cells. c. Immune complexes form on blood vessel surfacesd. A skin thickening called an induration may form..

Description : During the course of a cellular hypersensitivity a. Antibodies react with antigens in tissues. b. Serotonin and histamine are released by cells. c. Immune complexes form on blood vessel surfaces. d. A skin thickening called an induration may form.

Last Answer : b. Serotonin and histamine are released by cells.

Acquired immunity consists of humoral immunity maintained by _____ and _____, and cell-mediated immunity controlled by _____ a. T cells, complement, B cells b. T cells, Interleukin, B cells c. B cells, antibodies, T cells d. B cells, histamine, T cells

Description : Acquired immunity consists of humoral immunity maintained by _____ and _____, and cell-mediated immunity controlled by _____ a. T cells, complement, B cells b. T cells, Interleukin, B cells c. B cells, antibodies, T cells d. B cells, histamine, T cells

Last Answer : c. B cells, antibodies, T cells

Cytotoxic T cells release which 2 toxic proteins as they fight target cells? a. histamine and heparin b. perforin and granzymes c. interleukin and interferon d. lysozymes and cytokines

Description : Cytotoxic T cells release which 2 toxic proteins as they fight target cells? a. histamine and heparin b. perforin and granzymes c. interleukin and interferon d. lysozymes and cytokines

Last Answer : b. perforin and granzymes

________ bind to_________ on microbial invaders. a. Toll-like receptors; PAM Ps b. Mast cells; histamine c. Toll-like receptors; complement d. Macrophages; defensins

Description : ________ bind to_________ on microbial invaders. a. Toll-like receptors; PAM Ps b. Mast cells; histamine c. Toll-like receptors; complement d. Macrophages; defensins

Last Answer : a. Toll-like receptors; PAM Ps