Jeffrey A. Brent | |
---|---|
Alma mater | Mount Sinai School of Medicine |
Scientific career | |
Fields | Medical toxicology |
Institutions | University of Colorado Health Sciences Center |
Thesis | The toxicity of 5-bromo 2'-deoxyuridine to malignant lymphoid cells (1978) |
Jeffrey A. Brent is a medical toxicologist [1] who is a distinguished clinical professor of medicine and emergency medicine at the University of Colorado, School of Medicine. [2] In addition, he is a professor at the Department of Environmental and Occupational Health at the Colorado School of Public Health. [3] He is also the past president of the American Academy of Clinical Toxicology, was editor in chief of the journal Toxicological Reviews, and was a member of the board of directors of the American College of Medical Toxicology. [4] Previously, most of Brent's research focused on the use of fomepizole as a treatment for both methanol and ethylene glycol poisoning, and he led a trial of this drug which resulted in the FDA approving it in December 1997. [5] Currently, Brent serves as Director of the Toxicology Investigators Consortium, an NIH and FDA supported multi center research and surveillance group. Brent is also a senior editor of "Critical Care Toxicology: Diagnosis and Management of the Critically Poisoned Patient," originally published in 2005, and now in its second edition, which was published in 2017.
In 1970, Brent graduated from Hunter College with a Bachelor of Arts in chemistry, as well as a masters' degree in molecular biology. He completed his PhD in biochemistry at Mount Sinai School of Medicine and earned his MD from State University of New York at Buffalo's school of medicine. He also completed a fellowship at Denver Health Medical Center, a residency at Emory University and an internship at Beth Israel Deaconess Medical Center. [6]
This section of a biography of a living person does not include any references or sources .(October 2017) |
He was initially appointed to the University of Colorado in 1987 as an instructor, and then was promoted to assistant professor, then associate, then full, and finally to distinguished professor. He has authored more than 200 peer-reviewed publications. He was the chair of the toxicology section of the American College of Emergency Physicians from 1991 to 1993. Brent has published many scientific studies, primarily in the area of medical toxicology.
Brent was one of the U.S. government's experts in the autism omnibus hearing, in which he testified in support of the scientific consensus that thimerosal-containing vaccines do not cause autism, and specifically criticized a study by Holmes et al. [7] which the plaintiffs had cited to argue that TCVs were dangerous to a specific subpopulation who were not as good at excreting mercury in hair. He also argued that chelation therapy is of no use as a treatment for autism, and that the signs and symptoms of autism are very different from those of ethylmercury poisoning.
In the so-called autism omnibus trial, Brent testified on behalf of the government, i.e. that thimerosal does not cause autism. In particular, he criticized the concept of hypersensitivity to thimerosal as a concept that had been invoked as a way to bypass real science. He also testified that, with regard to the levels of mercury in the urine of Jordan King and William Mead, who had been chelated, that "You always expect to see levels in the urine bump post-chelation." He also criticized the plaintiff's use of Doctor's Data Laboratories as relying on urine mercury levels rather than the gold standard, blood mercury levels. [8] Brent has also voiced opposition to the use of chelation therapy as an autism treatment both in the omnibus trial, where he testified that "there was absolutely no reason to chelate them [the children who served as the test cases] for any mercury-related reason," and in peer-reviewed journals. [9] [10]
Thiomersal (INN), or thimerosal, is an organomercury compound. It is a well-established antiseptic and antifungal agent.
Mercury poisoning is a type of metal poisoning due to exposure to mercury. Symptoms depend upon the type, dose, method, and duration of exposure. They may include muscle weakness, poor coordination, numbness in the hands and feet, skin rashes, anxiety, memory problems, trouble speaking, trouble hearing, or trouble seeing. High-level exposure to methylmercury is known as Minamata disease. Methylmercury exposure in children may result in acrodynia in which the skin becomes pink and peels. Long-term complications may include kidney problems and decreased intelligence. The effects of long-term low-dose exposure to methylmercury are unclear.
Chelation therapy is a medical procedure that involves the administration of chelating agents to remove heavy metals from the body. Chelation therapy has a long history of use in clinical toxicology and remains in use for some very specific medical treatments, although it is administered under very careful medical supervision due to various inherent risks, including the mobilization of mercury and other metals through the brain and other parts of the body by the use of weak chelating agents that unbind with metals before elimination, exacerbating existing damage. To avoid mobilization, some practitioners of chelation use strong chelators, such as selenium, taken at low doses over a long period of time.
Dimercaprol, also called British anti-Lewisite (BAL), is a medication used to treat acute poisoning by arsenic, mercury, gold, and lead. It may also be used for antimony, thallium, or bismuth poisoning, although the evidence for those uses is not very strong. It is given by injection into a muscle.
Bernard Rimland was an American research psychologist, writer, lecturer, and influential person in the field of developmental disorders. Rimland's first book, Infantile Autism, sparked by the birth of a son who had autism, was instrumental in changing attitudes toward the disorder. Rimland founded and directed two advocacy groups: the Autism Society of America (ASA) and the Autism Research Institute. He promoted several since disproven theories about the causes and treatment of autism, including vaccine denial, facilitated communication, chelation therapy, and false claims of a link between secretin and autism. He also supported the ethically controversial practice of using aversives on autistic children.
Fomepizole, also known as 4-methylpyrazole, is a medication used to treat methanol and ethylene glycol poisoning. It may be used alone or together with hemodialysis. It is given by injection into a vein.
Thiomersal is a mercury compound which is used as a preservative in some vaccines. Anti-vaccination activists promoting the incorrect claim that vaccination causes autism have asserted that the mercury in thiomersal is the cause. There is no scientific evidence to support this claim. The idea that thiomersal in vaccines might have detrimental effects originated with anti-vaccination activists and was sustained by them and especially through the action of plaintiffs' lawyers.
Metal toxicity or metal poisoning is the toxic effect of certain metals in certain forms and doses on life. Some metals are toxic when they form poisonous soluble compounds. Certain metals have no biological role, i.e. are not essential minerals, or are toxic when in a certain form. In the case of lead, any measurable amount may have negative health effects. It is often thought that only heavy metals can be toxic, but lighter metals such as beryllium and lithium may also be in certain circumstances. Not all heavy metals are particularly toxic, and some are essential, such as iron. The definition may also include trace elements when abnormally high doses may be toxic. An option for treatment of metal poisoning may be chelation therapy, a technique involving the administration of chelation agents to remove metals from the body.
Ethylene glycol poisoning is poisoning caused by drinking ethylene glycol. Early symptoms include intoxication, vomiting and abdominal pain. Later symptoms may include a decreased level of consciousness, headache, and seizures. Long term outcomes may include kidney failure and brain damage. Toxicity and death may occur after drinking even in a small amount as ethylene glycol is more toxic than other diols.
Barbiturate overdose is poisoning due to excessive doses of barbiturates. Symptoms typically include difficulty thinking, poor coordination, decreased level of consciousness, and a decreased effort to breathe. Complications of overdose can include noncardiogenic pulmonary edema. If death occurs this is typically due to a lack of breathing.
Michelle Cedillo v. Secretary of Health and Human Services, also known as Cedillo, was a court case involving the family of Michelle Cedillo, an autistic girl whose parents sued the United States government because they believed that her autism was caused by her receipt of both the measles-mumps-and-rubella vaccine and thimerosal-containing vaccines. The case was a part of the Omnibus Autism Proceeding, where petitioners were required to present three test cases for each proposed mechanism by which vaccines had, according to them, caused their children's autism; Cedillo was the first such case for the MMR-and-thimerosal hypothesis.
Hurair Vasken Aposhian was a Ph.D. toxicologist and an emeritus professor of molecular and cell biology at the University of Arizona, a post he held beginning in 1975. He is also a former professor of pharmacology at the medical school at said university. He received his bachelor's degree in chemistry, at Brown University, 1948. He received a master's degree and a PhD in physiological chemistry at the University of Rochester, where he published some scientific studies about the synthesis of isoalloxazine ring-containing compounds. He did a postdoctoral with Nobel Laureate Arthur Kornberg in the department of biochemistry at Stanford University School of Medicine. He has done sabbatical scholar-in-residence at MIT and at the University of California at San Diego. He is best known for his pioneering work on Succimer and Unithiol in the treatment of arsenic, mercury, lead and other heavy metals leading to FDA approval of succimer in childhood lead poisoning at levels over 40 ug/dl. Previous posts he had held include at Vanderbilt, Tufts University, and the University of Maryland. His views about mercury in vaccines and in dental amalgams go against the consensus of the medical community and are controversial.
James Jeffrey "Jeff" Bradstreet, was an American doctor, alternative medicine practitioner, and a former preacher who ran the International Child Development Resource Center in Melbourne, Florida, a medical practice in Buford, Georgia and in Arizona, where he practiced homeopathy. He also founded the Good News Doctor Foundation, which aimed to combine Christian beliefs with his medical practice.
James B. Adams is a President's Professor at Arizona State University, where he directs the autism/Asperger's research program, though he originally taught chemical and materials engineering there. Adams also holds a post at the Southwest College of Naturopathic Medicine. He is also the president of the Autism Society of Greater Phoenix, the co-chair of the Autism Research Institute's scientific advisory committee, and has received the Autism Service Award from the Greater Phoenix chapter of the Autism Society of America. He has been featured on Dateline NBC, and received a National Science Foundation Presidential Young Investigator Award from President George Bush in 1996.
David S. Baskin is a neurosurgeon who currently works at Houston Methodist Hospital as the Vice Chairman of the Department of Neurosurgery, the Director of the Residency Training program, and the Director of the Kenneth R. Peak Brain & Pituitary Tumor Center, and is also a professor of neurosurgery at Weill Cornell Medical College.
Jane Maroney El-Dahr is a clinical professor of pediatrics and the head of the division of pediatric allergy and immunology at Tulane University School of Medicine, where she has worked since 1990. She is also the president of the Louisiana Society of Allergy, Asthma and Immunology. She has expertise in allergy, immunology, and rheumatology.
Methanol toxicity is poisoning from methanol, characteristically via ingestion. Symptoms may include a decreased level of consciousness, poor or no coordination, vomiting, abdominal pain, and a specific smell on the breath. Decreased vision may start as early as twelve hours after exposure. Long-term outcomes may include blindness and kidney failure. Blindness may occur after drinking as little as 10mL; death may occur after drinking quantities over 15 mL.
Alcohols, in various forms, are used within medicine as an antiseptic, disinfectant, and antidote. Alcohols applied to the skin are used to disinfect skin before a needle stick and before surgery. They may be used both to disinfect the skin of the person and as hand sanitizer of the healthcare providers. They can also be used to clean other areas and in mouthwashes. Taken by mouth or injected into a vein, ethanol is used to treat methanol or ethylene glycol toxicity when fomepizole is not available.
A disulfiram-like drug is a drug that causes an adverse reaction to alcohol leading to nausea, vomiting, flushing, dizziness, throbbing headache, chest and abdominal discomfort, and general hangover-like symptoms among others. These effects are caused by accumulation of acetaldehyde, a major but toxic metabolite of alcohol formed by the enzyme alcohol dehydrogenase. The reaction has been variously termed a disulfiram-like reaction, alcohol intolerance, and acetaldehyde syndrome.
Barry H. Rumack is an American medical toxicologist and pediatrician. His primary clinical and research interest has been in clinical toxicology with a special interest in acetaminophen poisoning. Since 2014 he is Emeritus Professor of Emergency Medicine and Pediatrics at the University of Colorado School of Medicine.
He [Brent] is one of about 250 board-certified medical toxicologists in the United States, and he has experience in treating children with actual mercury toxicity.