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Doctor insights on: Neurons And Cells

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Why do brain tumors form in glial cells instead of neurons?

Why do brain tumors form in glial cells instead of neurons?

Both: In fact, there are tumors formed of neurons, and a significant proportion of brain tumors have cells which have both glial and neuronal characteristics. The conventional explanation for the higher frequency of glial tumors is that neurons in the brain are mostly post-mitotic, they don't divide, so they are less susceptible to dna damage causing cancer. ...Read more

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Neuron (Definition)

A neuron is a specialized cell that conducts impulses within the nervous system. It is made up of a cell body and processes including ...Read more


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Why does neuron cells die and leave very few cells to produce dopamine?

Loss of dopamine: producing cells can occur for many reason including programmed cell death, manganese poisoning, stroke, encephalitis MPTP exposure etc, If one could nail down the exact underlying mechanism of Apoptosis (programmed cell death) this might lead to disease modifying treatments for conditions like Parkinson's Disease. , ...Read more

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can the destruction of neurons nerve cells body cause chaos in the brain and body and affect chemical and electrical signals in the body?

can the destruction of neurons nerve cells body cause chaos in the brain and body and affect chemical and electrical signals in the body?

Sometimes Yes: This question is vague and unclear, but with that said I can acknowledge that brain and body are electrical energy systems connected by miles of nerve fibers. There is much yet to be understood about the brain, but enough is known about spinal cord and brain dysfunction to know that a significant enough insult or damage to any one area can disrupt various other system processes. ...Read more

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What type of cells are B cells and T cells?

What type of cells are B cells and T cells?

Lymphcytes: When blood is examined under the microscope an array of cells are defined mostly RBC but also larger white cells known as polymorphoneuclear WBC's, marcrophages and a group of small round cells known as lymphocytes. Robt Good was able to subclassify them into T and B cells, the former providing the cytotoxic CD8 cells and B cells producing antibody to attack invaders. ...Read more

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How are adult stem cells and embryonic stem cells different?

How are adult stem cells and embryonic stem cells different?

Stem Cells: Check out regenexx.Com for more info. Basically adult stem cells are usually from your own blood, fat or bone marrow. Embryonic stem cells are from fetal tissue and umbilical cord blood and tissue but are not your own unless you had this harvested when you were born. ...Read more

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What are the functions of B cells and T cells?

What are the functions of B cells and T cells?

Lymphocytes: T cells, different types, master the specific immune system, while B cells mainly produce different types of antibodies, under the the control T cells, to fight invading microorganisms and/or invading antigens, just simply put for a very complex system (the immune system) ...Read more

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Why are stem cells called "life-giving cells"?

Why are stem cells called "life-giving cells"?

Organ regeneration: Stem cells have the potential to regenerate damage organs and this may save a life. Stem cell transplants are used most commonly in treating disorders of the bone marrow. ...Read more

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Are cell phones to the brain and the human body?

Are cell phones to the brain and the human body?

U.S. C.D.C. says...: In the last 15 years, hundreds of research studies have investigated whether health problems can be linked to cell phone use. Some of these studies have suggested the possibility that long-term, high cell phone use may be linked to certain types of brain cancer. These studies do not establish this link definitively. Scientists need to conduct more studies to learn more about this possible risk. ...Read more

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Can you tell me how the supporting cells of nervous tissue (e.g. schwann cells) differ from neurons?

Can you tell me how the supporting cells of nervous tissue (e.g. schwann cells) differ from neurons?

Brief anatomy: The nerve is comprised of a central axon, and larger fibers have an insulation covering called myelin. In the peripheral nervous system, the Schwann cell produces and maintains the insulation. Integrity of the nerve cell within the spinal cord provides the nutrition to maintain axonal function. ...Read more

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What specific Autoimmune diseases attack brain cells and neurons causing a dramatic effect to neurotransmitters,hormones and the function of the brain

What specific Autoimmune diseases attack brain cells and neurons causing a dramatic effect to neurotransmitters,hormones and the function of the brain

Lupus: Systemic Lupus can attack everywhere and lead to the things u asked about. Other considerations are vasculitis syndromes as there is an autoimmune attack on and in blood vessels which can affect neurons indirectly. Myasthenia Gravis also affect the neuromuscular system and affects one of the main neurotransmitter, AcetylCholine. Rheumotologist is specialist to see for autoimmune disorders ...Read more

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Are microglia and macroglia considered as subunits of glia cells?

Are microglia and macroglia considered as subunits of glia cells?

Yes: microglia and macroglia are non neuronal cells and as subunits of glial cells that surround neurons and provide support for and insulation between them. ...Read more

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Are the NMDA receptors and nr1 subunit in the cerebellum?

Are the NMDA receptors and nr1 subunit in the cerebellum?

You're confused: Neuronal receptors are proteins that float around in neurons' cell membranes. The nr1 subunit is a part of the nmda receptor. Nmda receptors make up only about 1% of cerebral neuronal receptors but they are widely distributed throughout the entire brain. They play a part in long-term potentiation, which is believed to be one of the mechanisms of learning and memory. ...Read more

Dr. James Lin Dr. Lin
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What are the differences between sperm cell nucleus and body cell nucleus?

Dr. James Lin Dr. Lin
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What are the differences between sperm cell nucleus and body cell nucleus?

Here are some...: Key difference is DNA helices in body is a pair and in germ cell is a half of it, that is, single. Do you have some clinical specific health concern in mind? That should be more interested for most practicing physicians. If you like to explore more on life reality, peruse articles listed in http://www.formefirst.com/onLifeBasics.html. ...Read more

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How often do glial cells multiply and divide? Particularly glial cells in the brain stem? What causes cancer to form here? How many mutations?

How often do glial cells multiply and divide? Particularly glial cells in the brain stem? What causes cancer to form here? How many mutations?

I am sorry: because I know this is a serious question but unfortunately no one can answer any of these questions. Speed of mutation and number of mutations is entirely individual and we really don't know what causes brain stem glioma. Best of luck to you. ...Read more

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Positive for EBV is it possible the virus could enter nerve cells and t cells and nk killer cells could mistakenly attacks those nerve cells?

HIghly unlikely: If you meant your ebv antibody titer is high, that is a very nonspecific finding unless the antibody is igm. Most healthy people have positive ebv titers and thus the probability is highly unlikely. ...Read more

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What are B cells and T cells?

What are B cells and T cells?

White blood cells: B-cells make antibodies. Each single B-cell, after maturing by modifying its DNA, produces one type of antibody that is specific for a single target. If the body decides that it is a good antibody, the B-cell moves to the bone marrow making that antibody for years. Some T-cells kill damaged cells (eg after viral infection or pre-tumor cells). Other T-cells act as messenger guiding inflammation ...Read more

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What differentiates embryonic stem cells from other stem cells?

What differentiates embryonic stem cells from other stem cells?

Origin: Embryonic stem cells are derived from fertilized eggs created to help couples who have difficulty conceiving. This is "murder" according to some religionists. Other stem cells come from other sources. However, since the striking success of embryonic stem cells in early studies on wet macular degeneration, even the conservative presidential candidate no longer seems opposed to their use. ...Read more

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Are NMDA receptors or ampa receptors found outside of the brain and spinal cord?

Are NMDA receptors or ampa receptors found outside of the brain and spinal cord?

Glutamate receptors: Glutamate is the major excitatory neurotransmitter in the cns, and could be expressed elsewhere in body, but the receptor description used above is designed to study brain pathways pre-dominantly, and has not be studied extensively othewise. Nmda antagonism is mechanism of several drugs, but to date, no successful ampa agonist. ...Read more

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What parts of the brain regenerate cells? Also, would the loss in brain cells create loss in intelligence?

What parts of the brain regenerate cells? Also, would the loss in brain cells create loss in intelligence?

Animal studies: No known areas of brain which contain "intelligence". This is all way into the future now. The parts of the brain which show regrowth are laboratory studies- fascinating and intriguing, but still you will have to hit the books and burn the midnight oil! ...Read more

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How are embryonic stem cells and umbillical different?

How are embryonic stem cells and umbillical different?

Stem cells: There are three classes of stem cells: totipotent, multipotent, and pluripotent. Multipotent stem cells (umbilical cord stem cells) can give rise to a small number of different cell types. Pluripotent stem cells (embryonic stem cells) can give rise to any type of cell in the body except those needed to develop a fetus.A fertilized egg is considered totipotent, meaning that its potential is total. ...Read more