Synonym |
Biological Source |
Chemical constituent |
Uses |
Adulterants/ Allied Species |
Substituent’s
|
Digitalis, foxgloves |
Digitalis purpurea Plantaginaceae |
cardiac glycosides \ antiarrhythmic agent atrial fibrillation\ digitoxin or digoxin Digoxigenin (DIG) is a steroid found exclusively
in the flowers and leaves of the plants Digitalis purpurea and Digitalis
lanata. It is used as a molecular probe to detect DNA or RNA. It can easily
be attached to nucleotides by chemical modifications. DIG molecules are often
linked to uridine nucleotides; DIG labelled uridine (DIG-U) can then be
incorporated into RNA probes via in vitro transcription. Once hybridisation
occurs in situ, RNA probes with the incorporated DIG-U can be detected with
anti-DIG antibodies that are conjugated to alkaline phosphatase. To reveal
the hybridised transcripts, alkaline phosphatase can be reacted with a
chromogen to produce a color precipitate. |
Digitalis works by inhibiting sodium-potassium
ATPase. This results in an increased intracellular concentration of sodium
ion and thus a decreased concentration gradient across the cell membrane.
This increase in intracellular sodium activates a sodium/calcium exchange
pump that brings calcium ions into the cell while extruding sodium to restore its gradient across the membrane. The increased cytosolic calcium
ion concentration results in increased calcium ion storage in the
sarcoplasmic reticulum. Upon action potential (cardiac contraction) more
calcium is released from the sarcoplasmic reticulum and this gives a positive
inotropic effect (higher contractility). |
Verbascum Thapsus contains candelabra trichomes while
digitalis contain multicellular uniseriate trichomes or grandular trichomes |
Digitalis canariensis Digitalis cariensis Digitalis ciliata Digitalis davisiana Digitalis dubia Digitalis ferruginea Digitalis grandiflora Digitalis isabelliana Digitalis laevigata Digitalis lanata Digitalis leucophaea Digitalis lutea Digitalis mariana Digitalis micrantha Digitalis obscura Digitalis parviflora Digitalis purpurea Digitalis sceptrum Digitalis thapsi Digitalis trojana Digitalis viridiflora |
Digitalis also has a vagal effect on the
parasympathetic nervous system, and as such is used in reentrant cardiac
arrhythmias and to slow the ventricular rate during atrial fibrillation. The
dependence on the vagal effect means that digitalis is not effective when a
patient has a high sympathetic nervous system drive, which is the case with
acutely ill persons, and also during exercise. |
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Arjuna bark, arjun.
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Terminalia arjuna Arjuna consists of the dried stem
bark of the plant known as Terminalia arjuna Rob, belonging to family
Combretaceae.
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·
Tannins: A type of polyphenol that is found in the bark of the Terminalia
arjuna tree Flavonoids: A type of polyphenol that is found in the bark of the Terminalia
arjuna tree Triterpenoid saponins: A type of chemical found in the bark of the Terminalia arjuna tree Gallic acid: A bioactive constituent found in the Terminalia arjuna tree Ellagic acid: A bioactive constituent found in the Terminalia arjuna tree Phytosterols: A bioactive constituent found in the Terminalia arjuna tree Minerals: Such as calcium, magnesium, zinc, and copper
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Pacifies pitta and kapha Heart tonic, angina,
hypertension Cardiovascular disease: Terminalia arjuna is used to treat heart failure, ischemic
cardiomyopathy, and atherosclerosis Blood diseases: Terminalia arjuna is used to treat anemia and blood diseases Skin conditions: Terminalia arjuna is used to treat wounds, skin eruptions, and
leucorrhea Asthma: Terminalia arjuna is used to treat asthma Ulcers: Terminalia arjuna is used to treat ulcers Diabetes: Terminalia arjuna is used to treat diabetes
Side effects Constipation, Headache, Abdominal discomfort, Body ache, Mild gastritis,
Hepatotoxicity, and Hypothyroidism.
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