Wait a second!
More handpicked essays just for you.
More handpicked essays just for you.
Neurotransmitters biochemistry
Neurotransmitters biochemistry
Functions and dysfunction of neurotransmitters
Don’t take our word for it - see why 10 million students trust us with their essay needs.
Recommended: Neurotransmitters biochemistry
Neurotransmitter affected: TTX affects serotonin, acetylcholine, histamine, norepinephrine, and epinephrine. The levels of serotonin are at their highest after four hours after TTX is administered. Whereas the levels of acetylcholine, histamine, and norepinephrine are at their highest after six hours. Mode of action TTX blocks the sodium channels like a cork thus inhibiting the action potential to rise. Since sodium cannot pass through the sodium channel because TTX blocked it; however, potassium channels remain untouched and they are able to flow through. TTX is much larger than a typical sodium ion, as a result, there is no way for the sodium to get around the blockage meaning there is no way for the sodium to pass through the membrane. Since the action potential cannot rise, it prevents nerve impulses from being conducted along the axon. If nerve impulses cannot be delivered, then the victim will lose control of their respiration, heart, and all body activity. Effects on body …show more content…
At first, the victim will feel a burning or tingling sensation on their lips, tongue, and in their limbs. This is then followed by sweating, headaches, weakness, lethargy, incoordination, tremors, paralysis, cyanosis, aphonia, dysphasia, and seizures. Later the victim will experience severe gastrointestinal symptoms such as nausea, diarrhea, and abdominal pain. As the poison sits in the body, the victim will experience respiratory issues and will have trouble breathing and speaking. They will experience a lower systolic and diastolic blood pressure, a lower pulse, and heart rate. The victim will most-likely become completely paralyzed but usually remains conscious and lucid for 4 to 6 hours; although, some victims will end up in a
Hex-A is a protein that helps break down a chemical found in the nerve tissue that is called gangliosides. Tay-Sachs disease develops when the body lacks Hex-A (Gravel, 2003). The Hex-A protein is essential and without this protein gangliosides known as GM2, build up in the cells, especially the brain cells. Anyone can be affected by this disease but the population most prominent to this disease...
There are also explanations dealing with clozapine's interaction with the serotonin 5HT2 receptors and the glutamate receptors. ... ... middle of paper ... ... hin a week levels will increase with treatment of colazopine.(Naheed & Green, 2000) Andreasen, N.C. (1994).
In a nicotine overdose nausea, vomiting, confusion, dizziness, weakness, coma, convulsions and respiratory and cardiac arrest can occur8
... four deaths in England, and one death in Germany from injected anthrax. Tissue swelling and tissue infection of the injection site occurred from the first to tenth day after injection were reported in nine out of ten cases. Color change in the skin from anthrax is unnoticeable due to it being similar to injecting heroin. Other reported symptoms are excessive bleeding and edema; if not treated the infected person would begin to develop organ failure (Hicks, 2012).
There is progressive vasoconstriction of arterioles until the BP exceeds the upper limit of auto regulation, followed by breakthrough vasodilation, increase in cerebral blood flow, blood-brain barrier dysfunction, and cerebral oedema(Rodriguez-Yanez et al., 2006). Cerebral ischemia results in severely ischemic tissue with failure of electrical activity and ionic pumps (Rodriguez-Yanez et al., 2006) There is increase in the release of the excitatory amino acid glutamate due to electrical failure. (Rodriguez-Yanez et al., 2006) . Glutamate receptors are activated as a result and cause the opening of ion channels that allow potassium ions to leave the cell and sodium and calcium ions to enter. This has a number of physiological effects.
“There are certain symptoms you would need to seek emergency medical attention right away for, for example repeated vomiting, loss of consciousness lasting for more than 30 seconds, slurred speech or changes in speech, and changes in physical coordination such as stumbling or falling.” (Mayo Clinic, n.d.)
The most common and well described pain transmission is “gate control theory of pain”. This theory was first proposed by Melzack and Wall in 1965 whereby they used the analogy of gate to explain the inhibition of pain which exists within the dorsal horn of the spinal cord. For instance, when tissue damage occurs, substances such as prostaglandin, serotonin, histamine and bradykinin are released from the injured cell. Individual usually consume or apply pain medications such as NSAIDs whereby these medications will cause electrical nerve impulse at the end of the sensory nerve fiber via nociceptor. Nociceptor is a pain receptor that is commonly found in the skin, cornea of eye and organ of motion such as muscles and ligaments. These nerve impulses
Since nobody really knows how a person’s body is going to react with bath salts or what exactly is in it health care professional have a hard time treating the overdose. There are different ways people use bath salt some smoke it some snort it some inject it with a needle and some just swallow it. Violent behavior, cold fingers, fast heart rate, nausea, headache, hallucinations and paranoia are all symptoms that have been reported from being on bath salts.
These effect will appear a few hours after usage and disappear in hours or days: Physical effects like, numbness, muscle weakness and trembling, rapid reflexes, increased blood pressure, heart rate, and temperatures, impaired motor skills and coordination, dilated pupils, nausea and sometimes seizers.
Extreme gasping and muscle spasms can occur. While losing consciousness, a person can vomit and then inhale the vomit. Panic, feelings of terror and assaultive behavior take place from the drug-induced confusion. Other problems can include difficulty in taking the drugs, failure of the drugs to induce unconsciousness and a number of days elapsing before death occurs. (NEJM)
...well, which is how the disease got its name. The swelling then becomes tender, and perhaps as large as an egg. The heart begins to flutter rapidly as it tries to pump blood through swollen, suffocating tissues. Subcutaneous hemorrhaging occurs, causing purplish blotches on the skin. The victim's nervous system began to collapse, causing dreadful pain and bizarre neurological disorders. By the fourth day, wild anxiety and terror overtake the sufferer and then the sense of resignation, as the skin blackens and the rictus of death settles on the body. (Blue).
The effects of Ketamine vary depending on a persons height, weight, health, and the amount taken. When injected, the effects can occur within 30 seconds, up to 20 minutes when swallowed, and 5 to 10 minutes if snorted. With a low dose, a person can have feelings of being detached from their body, can have hallucinations and distorted perception, confusion, and have a hard time concentrating. They may also start to feel panicked and paranoid. Slurred speech, blurred vision, and lack of coordination, or the inability tio move may occur as well. With a higher dose, the effects of a lower does may be intensified while experiencing other effects such as drowsiness, temporary paralysis, depression, and amnesia. The person may have bizzare behaviors, increased saliva and body temperature, and a...
The effects of inhalant use are many. Almost all the abused products offer effects similar to those of anesthetics, which are slowing down the body functions. Depending upon the dosage, the user may feel a slight stimulation, less inhibition, or lose consciousness altogether. There is also something called Sudden Sniffing Death Syndrome. This means that the user can die after one inhalant use or after many. Immediate effects inhalants offer are nausea, sneezing, coughing, nosebleeds, feeling/looking tired, bad breath, lack of coordination, and loss of appetite. There is considerable damage to ones heart, kidney, brain, liver, bone marrow, and other organs. Mothers who use inhalants during their pregnancy will leave their baby to suffer similar results of Fetal Alcohol Syndrome. There are many long terms effects as well. Permanent brain damage can occur. A person doesn’t even have to be doing it for very long before the brain starts to get clogged. Loss of memory is one of the first signs of brain damage.
To find out more we used quantification methods to find the amount used in our victim. The alkaline metal in Belladonna is Atropine or C17H23NO3. Atropine is what causes the affects seen in Belladonna. The more of the plant, the mimgsrv[1]ore poison in the body. "Excessive dosing may cause palpitation, dilated pupils, difficulty in swallowing, hot dry skin, thirst, dizziness, restlessness, tremor, fatigue and ataxia. Toxic doses lead to restlessness and excitement, hallucinations, delirium and coma. Depression and circulatory collapse occur only with severe intoxication. In such cases, blood pressure declines and death due to respiratory failure may ensue following paralysis and coma." It is possible for our victim to have been injected with the Belladonna which would support the presence of the substance in the victim. I took a solution of Atropine sulfate monohydrate in water and made it for the injection with sodium chloride. This was to ensure that it rendered to the solution isotonic. I measured 0.1 mg of Atropine sulfate monohydrate = 0.0839 mg of pure atropine and 9mg of sodium chloride. Through this a powder was formed, and i was able to find the solubility and the speed of its dissolving in a liquid substance which was similar to that of blood. However, The amounts given in an injection sample did not match those in the
One of the issues lie in the voltage sensitive sodium channel. It has been shown that many people with Hyperkalemic periodic paralysis has low serum potassium levels during attacks of paralysis. While the normal level for potassium in the blood is between 3.5-5 millimoles per liter (Mayoclinic) during a paralytic episode, the potassium level rises to 6-7 millimoles per liter. Like with hypokalemia, hyperkalemia paralysis usually occurs during a period of rest after exercise. During a hyperkalemic attack, depolarization occurs by induction of extracellular potassium. In a hyperkalemic period of paralysis, a potassium related abnormality of sodium conductance in the pathogenesis has been observed (Brown 1991). Hyperkalemic has been proven to be tightly linked to the tetrodotoxin sodium channel (TTX) (Brown 1991). Hyperkalemic periodic paralysis occurs due to a mutation in the skeletal muscle sodium channel complex (SCN4A) (Ebers et al. 1991). There is a defect in the normal voltage dependent inactivation of the sodium channels (Cannon et al. 1991). Whenever there is an elevation of potassium, even a slight one, the gating mode in the channels, persistently reopen and sometimes stay open for long moments (Cannon et al. 1991). Hyperkalemia periodic paralysis manifests because of the inactivation of the un-mutated sodium channels via the membrane voltage