Chronic itch, ion channels, magnesium and calcium

Genetic differences in more than 70 genes have been associated with increased itchiness. [1] Calcium and serotonin levels may be involved in increased itch or arthritis pain signals being sent/perceived. [2] See the excerpts below:

Summary: Too much or too little calcium and magnesium can affect pain, itching, and mood. The minerals are both electrically active, and provide energy for ion channels which control the transport of messenger chemicals like serotonin across cell membranes – such as nerve cell membranes.

“For neurons to become excited, you need a receptor to communicate with an ion channel,” said Dr. Bautista. “We tried a variety of experiments and found that HTR7 communicates with the TRPA1 ion channel. Both receptors seem to be working together to mediate chronic itch.” “The researchers found more than 70 genes whose expression was higher in the more itch-sensitive mice. Of these, the gene for the HTR7 receptor was the most closely linked to itch. In fact, the HTR7 gene was twice as active in the itchiest mice compared to the least sensitive mice. ”  [1]

  1. An Itch You Just Can’t Scratch; NIH-funded study identifies proteins that may cause chronic itch (Oct. 27, 2015) http://www.ninds.nih.gov/news_and_events/news_articles/pressrelease_chronic_itch_10272015.htm
  2. Adam Horvath, et al., Transient receptor potential ankyrin 1 (TRPA1) receptor is involved in chronic arthritis: in vivo study using TRPA1-deficient mice, Arthritis Res Ther. 2016; 18: 6http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4718022/          

    Excerpt: “TRPA1 is also directly stimulated by intracellular calcium [24] and a broad range of noxious endogenous oxidative products, such as 4-hydroxy-2-nonenal, hydrogen peroxide, hypochloride, hydrogen sulphide, 15-delta prostaglandin J2 [2528]. Furthermore, there are several exogenous irritants like mustard oil (allyl isothiocyanate: AITC) [29], cinnamaldehyde [30, 31], allicin [32, 33] and formalin [34] that are known to be potent agonists of TRPA1. Inflammatory mediators, such as bradykinin and serotonin, can sensitize this receptor and increase the responsiveness of the nerve endings [19, 35]. These findings suggest that TRPA1 may be involved in the development and maintenance of arthritic pain, but the precise mechanisms are still unknown.”

  3. Rs6295: The “Single” and “Self-Transcendent” Gene (5-HT1A Receptor) https://selfhacked.com/2015/07/23/rs6295-the-single-and-self-transcendent-gene-5-ht1a-receptor/Magnesium and Calcium increase the binding of serotonin to the 5HT1A receptors in the cortex (purkinje cells). (R)

  4. Bujalska M., et. al., Magnesium ions and opioid agonist activity in streptozotocin-induced hyperalgesia. Pharmacology. 2008;82(3):180-6.http://www.ncbi.nlm.nih.gov/pubmed/18701828

  5. That Really Does Make It Worse

    Disclaimer: Opinions are my own and the information is provided for educational purposes within the guidelines of fair use. While I am a Registered Dietitian this information is not intended to provide individual health guidance. Please see a health professional for individual health care purposes.

World Autism Awareness Day; “Please teacher” video

It is World Autism Awareness Day and a video (follow the link in the Tweet) was shared of students with autism addressing their teachers about their differences. The person who shared it describes it as heart breaking and it is but it is also hopeful.

 

Recently I was reading a poem by someone with autism and it reminded me of me. It was describing a feeling of not fitting in with the normal types of people but not wanting to be lumped in with the type of people who couldn’t communicate at all:

High functioning people with autism might understand and listen and be interested but not be comfortable or able to speak their thoughts well. They might enjoy going to a party and just listening and smiling on the outskirts rather than chatting much but they could still be enjoying themselves in their own ways. I liked to water plants during social gatherings at a church where I was a member. I was part of the group and enjoyed saying hi’s briefly to people and it helped the plants and gave me something to do so it wouldn’t seem odd to not get into longer chats with people. I’m much better at talking about nutrition then about social chit-chat.

Some families have found that smartphones allow instant texting as a modern solution to conversation. The family talks and the person with autism listens and texts back to them in response. It can also be common for people with autism to communicate in snippets of quoted lyrics or other phrases – using other’s words to say what’s also on their mind.

Disclaimer: Opinions are my own and the information is provided for educational purposes within the guidelines of fair use. While I am a Registered Dietitian this information is not intended to provide individual health guidance. Please see a health professional for individual health care purposes.

A U.S. Congressman is seeking a DOJ investigation of glyphosate

The U.S. Congressman Ted Lieu has called for a Department of Justice investigation of the chemical glyphosate used in the herbicide Roundup. There may have been collusion by an EPA worker and Monsanto to suppress investigation of the chemical’s health risks. It has been labeled a likely carcinogen.

“New questions about the safety of Monsanto weed killer Roundup are deeply troubling. I worked on the glyphosate issue last term and I believe consumers should immediately stop using Roundup, whose core ingredient glyphosate has been labeled a likely carcinogen and has been linked to non-Hodgkin’s lymphoma by the International Agency for Research on Cancer. We need to find out if Monsanto or the Environmental Protection Agency misled the public.”

-U.S. Congressman Ted Lieu,  “US Congressman Calls for DOJ Investigation into EPA-Monsanto Glyphosate Collusion” Mar 17 2017 – by Sustainable Pulse

Read more: http://sustainablepulse.com/2017/03/17/us-congressman-calls-for-doj-investigation-into-epa-monsanto-glyphosate-collusion/#.WMv1yjvytPb

Disclaimer: Opinions are my own and the information is provided for educational purposes within the guidelines of fair use. While I am a Registered Dietitian this information is not intended to provide individual health guidance. Please see a health professional for individual health care purposes.

A TEDx talk about SPECT Scans and Psychiatric Diagnosis

Psychiatry is a field that relies on talking and questioning patients about their symptoms and lives for the purposes of diagnosis. A pioneer in the field has been using a method to scan the electrical activity of the brain for the purpose of more accurate diagnosis with the goal of providing more accurate treatments.

Dr. Amen shares his findings from 83,000 SPECT scans taken over many years of his clinical work helping individual patients improve their health and quality of life with individualized diagnosis and treatment recommendations. While his findings have helped many patients with a variety of conditions, autism spectrum disorders are not a primary focus of his work. The scans can help clarify diagnosis of ADHD and many other psychiatric conditions and may be helpful with autism disorders but that will likely require more time and more patients. It is a private clinic that expects payment to be paid in full at the time of the appointment. The fees may be able to be covered in part by your health insurance company but you would have to submit the bill and work with your insurance company yourself – and it may require preauthorization so check with them first if you hope for some reimbursement.

Disclaimer: Opinions are my own and the information is provided for educational purposes within the guidelines of fair use. While I am a Registered Dietitian this information is not intended to provide individual health guidance. Please see a health professional for individual health care purposes.