Loss of nerve cells may link constipation with achalasia of the oesophagus

October 16, 2003

Patients who have difficulty swallowing food may also be more likely to suffer from constipation, according to a preliminary study published this week in BMC Gastroenterology. The research suggests that patients with achalasia of the oesophagus, associated with a loss of nerve cells in the muscle surrounding the oesophagus, may also lose nerve cells from the muscle surrounding the rectum. This may cause an increased incidence of constipation in this population.

Patients who suffer from achalasia of the oesophagus have problems passing food from their oesophagus to their stomach. Normally when you swallow, food is passed down the oesophagus aided by waves of muscle contraction called peristalsis. The sphincter muscle at the base of the oesophagus opens to allow food to pass into the stomach and then closes to prevent the stomach acid from entering the oesophagus. Both peristalsis and the relaxation of the sphincter muscle are controlled by the autonomic nervous system. The loss of nerve cells in the muscle surrounding the oesophagus therefore inhibits both these processes, leading to a build up of food in the oesophagus, causing it to stretch.

As constipation is similarly characterised by the impeded passage of the contents of the lower intestine, Professor Ahmed Shafik, from Cairo University, was interested in studying the link between achalasia and constipation. He tested nine people with achalasia, and eight healthy volunteers for symptoms of constipation. Six of the nine patients with achalasia had constipation, while none of the control subjects did. The six patients with constipation showed a lack of nerve cells in the muscular tissue surrounding their rectum and they did not have a normal rectoanal inhibitory reflex.

Professor Shafik suggests that the loss of nerve cells caused the constipation in these patients. It seems unlikely to be a secondary effect of the achalasia itself, as constipation often preceded the inability to eat that is symptomatic of achalasia. Furthermore, when the achalasia was treated, the constipation remained.

Although the high incidences of constipation in patients with achalasia, as well as the loss of nerve cells in both conditions, suggest a relationship between the two, this study did not elucidate its nature. Further work is needed to find out why the nerve cells degenerate in these patients, and why this degeneration appears to happen only at the extremities of the gut. However, this research is an important guide for future studies.
This press release is based on the following article:
Anorectal motility in patients with achalasia of the esophagus - recognition of an esophago-rectal syndrome.
Ahmed Shafik
BMC Gastroenterology 3:27
To be published Friday 17 October 2003

When published this article will be available free of charge, as per BioMed Central's open access policy. Please include the URL in any report so that your readers can view the full text.

For further information please contact Gemma Bradley, by email at press@biomedcentral.com or by phone on +44 (0)20 7323 0323

Alternatively contact the author, Professor Ahmed Shafik by email at shafik@ahmed-shafik.org or by phone - the most convenient time would be between 07:00 and 09:00h (GMT+2) in the morning on +20-2-383-2332, or in the evening between 19:30 and 20:30h (GMT+2) on +20-2-575-7498.

BMC Gastroenterology (http://www.biomedcentral.com/bmcgastroenterol) is published by BioMed Central (http://www.biomedcentral.com), an independent online publishing house committed to providing immediate free access to peer-reviewed biological and medical research. This commitment is based on the view that open access to research is essential to the rapid and efficient communication of science. In addition to open-access original research, BioMed Central also publishes reviews and other subscription-based content.

BioMed Central

Related Nerve Cells Articles from Brightsurf:

Nerve cells let others "listen in"
How many ''listeners'' a nerve cell has in the brain is strictly regulated.

Nerve cells with energy saving program
Thanks to a metabolic adjustment, the cells can remain functional despite damage to the mitochondria.

Why developing nerve cells can take a wrong turn
Loss of ubiquitin-conjugating enzyme leads to impediment in growth of nerve cells / Link found between cellular machineries of protein degradation and regulation of the epigenetic landscape in human embryonic stem cells

Unique fingerprint: What makes nerve cells unmistakable?
Protein variations that result from the process of alternative splicing control the identity and function of nerve cells in the brain.

Ragweed compounds could protect nerve cells from Alzheimer's
As spring arrives in the northern hemisphere, many people are cursing ragweed, a primary culprit in seasonal allergies.

Fooling nerve cells into acting normal
In a new study, scientists at the University of Missouri have discovered that a neuron's own electrical signal, or voltage, can indicate whether the neuron is functioning normally.

How nerve cells control misfolded proteins
Researchers have identified a protein complex that marks misfolded proteins, stops them from interacting with other proteins in the cell and directs them towards disposal.

The development of brain stem cells into new nerve cells and why this can lead to cancer
Stem cells are true Jacks-of-all-trades of our bodies, as they can turn into the many different cell types of all organs.

Research confirms nerve cells made from skin cells are a valid lab model for studying disease
Researchers from the Salk Institute, along with collaborators at Stanford University and Baylor College of Medicine, have shown that cells from mice that have been induced to grow into nerve cells using a previously published method have molecular signatures matching neurons that developed naturally in the brain.

Bees can count with just four nerve cells in their brains
Bees can solve seemingly clever counting tasks with very small numbers of nerve cells in their brains, according to researchers at Queen Mary University of London.

Read More: Nerve Cells News and Nerve Cells Current Events
Brightsurf.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com.