Logan Steele
Arsenic is a highly toxic chemical element that is the 20th most common on Earth. It is a natural component of the Earth's crust and is widely distributed in the environment in the air, water, and land. Arsenic poisoning can occur through incidental ingestion or inhalation, typically from drinking contaminated water, eating food cooked in contaminated water, or exposure to arsenic-containing pesticides, folk medicines, or industrial chemicals. Long-term exposure to arsenic can cause various adverse health effects, including cancer, skin lesions, cardiovascular disease, and diabetes. Arsenic poisoning can also lead to peripheral neuropathy, which is a type of nerve damage that can cause numbness, tingling, and pain in the extremities. In more severe cases of arsenic poisoning, paralysis with muscle atrophy may occur. Studies have shown that exposure to arsenic can impair muscle and muscle progenitor cell bioenergetics, leading to decreased force-producing capacity and fatigue recovery.
| Characteristics | Values |
|---|---|
| Arsenic poisoning | Caused by incidental ingestion or inhalation of arsenic, typically from drinking contaminated well water, eating food cooked in contaminated water, or being exposed to arsenic-containing pesticides, folk medicines, or industrial chemicals |
| --- | The World Health Organization considers arsenic levels above 10 parts per billion (10 micrograms per liter) to be unsafe |
| --- | In Northern England in 1900, arsenic-contaminated beer resulted in 6,000 poisonings and approximately 71 deaths |
| Physiological effects | Peripheral neuropathy, abdominal pain, nausea, vomiting, diarrhea, bloody diarrhea, heart and nervous system disruption, death |
| --- | Inhalation of arsine gas – the most toxic form of arsenic – causes a multisystem disease starting 2 to 24 hours after inhalation |
| --- | Symptoms include gastrointestinal distress, headache, weakness, difficulty breathing, kidney and liver dysfunction, and the destruction of red blood cells |
| --- | Chronic ingestion of lower levels of arsenic causes visible changes in the skin, typically hyperpigmentation, but sometimes hypopigmentation or alternating areas of each |
| --- | Arsenic can cause lung and skin cancers and may cause other cancers |
| --- | Chronic arsenic exposure induces high oxidative stress, which may affect the structure and function of the cardiovascular system |
| --- | Arsenic-impaired mitochondrial function causes a maladaptive response to oxidants, decreasing force-producing capacity and fatigue recovery |
| --- | Motor weakness of all degrees, including paralysis with muscle atrophy progressing from distal to proximal groups, has been observed |
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What You'll Learn
Arsenic poisoning can cause peripheral neuropathy
Arsenic is a colourless and odourless chemical element that is the 20th most common on Earth. It is a highly toxic substance that can cause severe poisoning in humans, leading to multiple organ failures and even death. Arsenic poisoning can occur through incidental ingestion or inhalation, often from contaminated water, food, pesticides, folk medicines, or industrial chemicals.
The mechanism of arsenic-induced neuropathy involves the destruction of axonal cylinders and inhibition of certain enzymes and biochemical processes. Arsenic inhibits the conversion of pyruvate to acetyl coenzyme A, blocking the Krebs cycle and causing mitochondrial dysfunction. This results in decreased energy production and increased oxidative stress, leading to impaired muscle function and progenitor cell bioenergetics.
Treatment for arsenic-induced peripheral neuropathy includes chelation therapy with agents such as dimercaprol, unithiol, and DMSA. However, the role of chelation therapy in chronic arsenic toxicity is controversial, and complete recovery from neuropathy may take years or may not occur at all.
In addition to peripheral neuropathy, arsenic poisoning can cause a range of other health issues, including gastrointestinal problems, cardiovascular disorders, reproductive toxicity, and an increased risk of developing various cancers.
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High arsenic exposure causes intense sweating in extremities
Arsenic is a highly toxic chemical element that is the 20th most common on Earth. It is a naturally occurring element found in rock, soil, water, air, plants, and animals. Arsenic poisoning is caused by incidental ingestion or inhalation, typically from drinking contaminated water, eating food cooked in contaminated water, or exposure to arsenic-containing pesticides, folk medicines, or industrial chemicals. Arsenic is seldom used in the Western world but is still a popular pesticide in Asia.
High levels of arsenic exposure can cause neuropathy, which may occur after 7 to 14 days. Symptoms include increased sweating in the distal lower extremities, painful dysesthesia, and ascending weakness and paralysis in more severe cases. Arsenic poisoning can also cause sensory-motor axonopathy, with sensory effects predominating in moderate poisoning. Cranial nerves are rarely affected, even in severe cases.
The neurotoxic forms of arsenic include inorganic trivalent (arsenite) and pentavalent (arsenate), as well as the methylated metabolites monomethyl arsenic acid and dimethylarsenic acid. Arsenic-induced neuropathy may be similar to thiamine deficiency neuropathy, where arsenic inhibits the conversion of pyruvate to acetyl coenzyme A, blocking the Krebs cycle. Arsenic poisoning can also cause encephalopathy, which may develop within 24 to 72 hours of acute poisoning but more often results from chronic exposure.
Chronic arsenic exposure can lead to peripheral neuropathy, characterized by numbness and tingling in the extremities, as well as enlargement of the liver and spleen, diabetes, heart disease, cognitive impairment, and damage to the portal vein. It can also cause skin changes such as hyperpigmentation or darkening, warts, lesions, and hard patches on the palms and soles of the feet (hyperkeratosis). Arsenic exposure has also been linked to an increased risk of developing several cancers, particularly of the skin, lungs, liver, bladder, and blood vessels.
Sweating is an important process for the excretion of toxic metals from the body, and arsenic has been found to be excreted in sweat in individuals with high exposure. Sweating induced by sauna, exercise, or pilocarpine iontophoresis can help measure the concentration of heavy metals in sweat. Arsenic dermal excretion was found to be several-fold higher in arsenic-exposed individuals compared to unexposed controls.
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Arsenic poisoning may cause muscle weakness and atrophy
Arsenic poisoning is caused by the incidental ingestion or inhalation of arsenic, typically from drinking contaminated water, eating food cooked in contaminated water, or exposure to arsenic-containing pesticides, folk medicines, or industrial chemicals. The World Health Organization considers arsenic levels above 10 parts per billion (10 micrograms per liter) to be unsafe.
Arsenic poisoning can cause peripheral neuropathy, which involves sensory and motor neurons. In high-level arsenic exposures, neuropathy may occur after 7 to 14 days, with increased sweating in the distal lower extremities. Sensory effects, particularly painful dysesthesia, may predominate in moderate poisoning, whereas ascending weakness and paralysis may be evident in more severe poisoning.
Chronic arsenic exposure can cause muscle weakness and atrophy. In mice, exposure to drinking water containing 100µg/L arsenite for 5 weeks demonstrated impaired muscle function, mitochondrial myopathy, and altered oxygen consumption. Arsenic-impaired mitochondrial function causes a maladaptive response to oxidants, decreasing force-producing capacity and fatigue recovery. This maladaptive bioenergetics could explain arsenic-promoted muscle disease.
In humans, muscle weakness and declines in functional mobility are often cited as the most common sequelae following high levels of arsenic toxicity. However, the underlying mechanisms contributing to these clinical symptoms are not yet fully understood. Arsenic poisoning can also cause muscle tenderness, which has been found to be of major diagnostic value.
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Arsenic poisoning can lead to muscle tenderness
Arsenic poisoning, or arsenicosis, is a medical condition caused by elevated levels of arsenic in the body. Arsenic is a highly toxic, naturally occurring chemical element that can be found in rock, soil, water, air, plants, and animals. It is the 20th most common element on Earth.
Arsenic poisoning is typically caused by the incidental ingestion or inhalation of arsenic. This often occurs through drinking contaminated water, eating food cooked in contaminated water, or exposure to arsenic-containing pesticides, folk medicines, or industrial chemicals. Arsenic poisoning can also occur through dermal absorption and ingestion of contaminated food. In some cases, it can be caused by exposure to toxic waste sites and pseudo-medicine. Most cases of arsenic poisoning are accidental.
Chronic arsenic poisoning can cause polyneuritis and motor paralysis of the distal extremities. It can also lead to ascending weakness and paralysis, with severe poisoning potentially resembling Guillain-Barré syndrome. In addition, chronic arsenic exposure can induce high oxidative stress, which may affect the structure and function of the cardiovascular system. This can lead to arrhythmia and accelerated cellular calcium overload, causing neurological disturbances.
The treatment for arsenic poisoning depends on the type and severity of exposure. For immediate exposure, removing contaminated clothing and rinsing the skin are crucial steps. Chelation therapy may be administered to separate arsenic from blood proteins, and bowel irrigation may also be used.
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Acute arsenic poisoning causes cardiovascular collapse
Arsenic poisoning is a global health issue that affects millions of people worldwide through environmental and occupational exposure, as well as intentional suicide and homicide attempts. Arsenic is a highly toxic, nearly tasteless, and odourless metalloid element found naturally in the environment. Acute arsenic poisoning occurs infrequently in the workplace today, with recognised poisonings more commonly resulting from unintentional ingestion, suicide, or homicide. Ingesting large amounts of arsenic can cause symptoms similar to food poisoning, including abdominal pain, nausea, vomiting, and diarrhoea.
Acute arsenic poisoning can cause cardiovascular collapse and hypovolemic shock, leading to death. Arsenic affects the heart and peripheral vascular system, causing capillary dilation with fluid leakage, severe hypovolemia, and hypotension. It also disrupts heart rhythms, leading to QT interval prolongation or tachycardia, and can cause heart failure. The toxicity of arsenic interferes with cellular longevity by inhibiting the essential metabolic enzyme pyruvate dehydrogenase complex, disrupting the energy system of the cell and resulting in cellular apoptosis. Arsenic also prevents the use of thiamine, leading to clinical symptoms resembling thiamine deficiency, including neurological disturbances.
Additionally, arsenic exposure plays a key role in the pathogenesis of vascular endothelial dysfunction by inactivating endothelial nitric oxide synthase, reducing the generation and bioavailability of nitric oxide. Chronic arsenic exposure induces high oxidative stress, which may impact the structure and function of the cardiovascular system, leading to atherosclerosis and an increased risk of cardiovascular pathogenesis. Arsenic exposure has also been linked to arrhythmia and an increased QT interval, further contributing to cardiovascular collapse.
The treatment for acute arsenic poisoning focuses on restoring RBC concentrations, maintaining renal function, electrolyte replacement, and providing aggressive supportive care. Dimercaprol and dimercaptosuccinic acid (succimer) are chelating agents used to sequester arsenic away from blood proteins. Supplemental potassium is crucial to decrease the risk of experiencing life-threatening heart rhythm problems caused by arsenic trioxide. Preventing arsenic poisoning involves using water that does not contain high levels of arsenic, which can be achieved through special filters or rainwater usage.
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Frequently asked questions
Arsenic poisoning is caused by the incidental ingestion or inhalation of arsenic, typically from drinking contaminated water, eating food cooked in contaminated water, or being exposed to arsenic-containing pesticides, folk medicines, or industrial chemicals. Arsenic is a highly toxic chemical element that is the 20th most common on Earth.
Symptoms of arsenic poisoning include abdominal pain, nausea, vomiting, and diarrhea. Other symptoms include numbness and tingling of the extremities, muscle cramping, and in extreme cases, death. Inhalation of arsine gas, the most toxic form of arsenic, can cause a multisystem disease with symptoms including gastrointestinal distress, headache, weakness, difficulty breathing, kidney and liver dysfunction, and the destruction of red blood cells.
Long-term exposure to arsenic can cause cancer, skin lesions, cardiovascular disease, and diabetes. Arsenic-induced myocardial infarction is a significant cause of excess mortality. Arsenic exposure has also been linked to adverse pregnancy outcomes, infant mortality, and negative impacts on child health, including cognitive development.
Yes, arsenic poisoning can cause paralysis with muscle atrophy progressing from distal to proximal groups. Arsenic exposure can also cause muscle weakness and declines in functional mobility, with studies indicating direct actions of arsenic on muscle progenitor cell functioning and skeletal muscle homeostasis.
