Lyme disease, science, and society: Camp Other
Showing posts with label anaplasmosis. Show all posts
Showing posts with label anaplasmosis. Show all posts

Friday, April 6, 2012

2 Video: Jorge Benach On Tickborne Disease At Stony Brook

I came across this video on Youtube which I haven't seen mentioned elsewhere. It is a presentation by Dr. Jorge Benach on tickborne diseases, mostly focused on cases in New York State and much of it on Lyme disease - but there is also discussion on tickborne diseases in a more general sense as well.

I watched the video and made a note on topics of discussion during various points of time during the presentation which may be of interest to others.

Note that it is a little over an hour long, but you can skip the first three minutes as they are only an introduction. The last fifteen minutes are dedicated to a question and answer session with the audience - including one person who walked out because she was not satisfied with Dr. Benach's response.

[Time: 1:06:41]




11:39 Benach discusses Lone Star tick as primary tick on Long Island and that the number of cases of Lyme disease are going down in Eastern Long Island - possibly due to this tick's expansion.

16:33 Lifestyle of Ixodes tick described.

23:17 Early Babesia microti case on Long Island identified in 1970's - opens discussion on Babesiosis. Risk categories: over 50, elderly, asplenic, immunosuppressed, and/or alcoholism history.

29:00 Beginning of Lyme disease discussion... history of discovery, use of dark field microscopy for detection; electromicroscopy.

36:12 60% of patients have EM rash that is noticed. 40% do not.

37:00 Disseminated Lyme - Neuroborreliosis -20%, Cardiac disease- 5-10%, Arthritis - 60%

37:20 Secondary Disseminated symptoms - refractory to treatment - Benach does not understand what happens with chronic Lyme disease patients. Audience member brings up infection-related damage, Benach agrees with him that this is a problem - then goes back to discussing acute Lyme disease.

39:40 A rash that enlargens is clearly an EM rash. This is key to early diagnosis with a rash.

40:20 Multiple EM rash is sign of disseminated Lyme disease and requires IV or parenteral antibiotics.

40:57 Discusses spirochetes affecting the CNS and how it is similar to syphilis, and that a dementia-like form of Lyme disease is controversial. Audience member mentions person who was completely messed up by neurological Lyme disease; had CSF that was positive for Lyme disease and improved with IV treatment.

43:00 Benach thinks neurologic involvement in Lyme disease is underreported.

43:10 Explanation of Bells palsy in a child, says it is very common but not malignant.

43:57 Mentions Lyme arthritis in the classic sense. Discusses symptoms as relapsing and remitting.

44:38 Benach is under impression that most people's cases of Lyme disease are caught early and treated early due to presence of EM rash.

44:50 Epidemiology of Lyme disease in New York State and counties in NY. Benach thinks doctors in some counties are treating Lyme disease and are not reporting their cases to the state any more - they are "Lyme tired". For other counties, there is active surveillance, and the numbers are going up as more cases are new to their area.

47:00 Quip that LD now threatens politicians in Albany.

47:48 Is Lonestar tick driving other ticks away? Maybe… someone needs to study it.

48:13 Audience member asks about birds. Catbirds and robins have ticks, but don't carry a lot because they like the rims near eyes (bare skin). Birds are dead ends for the spirochetes because of their high temperature, according to Benach…

49:30 Start of Q & A session

51:38 Do people have natural immunity to Lyme disease? Benach does not think so - there is universal susceptibility to LD.

53:00 Jury still out on whether or not people have genetic susceptibility to Lyme disease. Hard to know if you are bitten multiple times if you have new instance of disease or preexisting disease because Lyme disease can last for 30 (possibly more) years in the human body.

54:40 No known existence of antibiotic resistant Lyme disease. Does he rule it out completely? No. But he states Borrelia are genetically challenged and have so few genes they need them to do housekeeping; they have a very small genome. He says there is no presence of those genes and he is 90% sure there is no antibiotic resistance.

57:09 Vaccine discussion - brief.

58:00 Pesticide soaked cotton balls used to fight ticks locally. (Damminix)

1:00 Opinion on prolonged chronic Lyme IV treatment: If  my child or I myself had a very strong titer for Lyme disease, I would use antibiotics for as long as it did good. If I did not have a very strong titer, then I would be reluctant to use antibiotics due to side effects.

Recurring arthritis and neurological manifestations come with strong serology according to Benach.

Benach leaves the audience with a confusing opinion: On one hand, he states he would not take antibiotics long term. On the other, he states that if he continued to be sick in the presence of strong serology then he would take antibiotics.

1:05 IgM doesn't drop over time in Lyme disease. We cannot culture Lyme disease easily, doesn't grow well in vitro - it is very slow growing. Only mycobacteria divides more slowly. You need 5 weeks to culture Borrelia. Benach's implication is no one would wait for those results - test is too difficult; takes too long.

More info. on Dr. Benach's research:
http://www.mgm.stonybrook.edu/benach/index.shtml


Comments:

One of my main comments for now (I may add more later) is that I think Dr. Benach is wrong about the birds.

I found this article: http://news.discovery.com/animals/migrating-birds-lower-body-temperature.html

Migrating birds can easily carry Borrelia spirochetes because their average daytime temperature is around 42.5C and goes down to 33C at night - the birds temporarily have hypothermia. They do this to save energy during long trips.

While some strains of Borrelia are sensitive to the birds' higher temperature range, some birds are actually conducive of supporting Borrelia spirochetal infections. Catharus fuscescens is one example.

See: http://jmm.sgmjournals.org/content/47/10/929.full.pdf

B. garinii, at 41C has the highest growth temperature on record. However, just because Borrelia stop growing doesn't indicate it is not present. Under varying temperature conditions, some Borrelia may be able to survive.

Another comment is that Dr. Benach mentions that Borrelia burgdorferi does not show signs of antibiotic resistance or genes for antibiotic resistance mechanism.

However, there are some spirochetes which have been resistant to erythromycin, and there is now some evidence of an antibiotic resistance mechanism in Bb: http://www.plospathogens.org/article/info%3Adoi%2F10.1371%2Fjournal.ppat.1000009


Read More

Wednesday, December 7, 2011

0 Review Of The 2011 Lyme and Tick-Borne Diseases National Conference

In October 2011, a national conference on Lyme and tick-borne diseases was held in Philadelphia by Columbia University and the Lyme Disease Association.

Here is a brief overview of the topics presented:

  • Dr. J. William Costerton’s riveting talk on “The Role of Biofilms in Chronic Bacterial Infections” reviewed the history of the discovery of biofilms, demonstrating that these biofilms enable micro-organisms to resist host defenses and antibiotics, enabling infections to become chronic.
  • Dr. Eva Sapi’s talk on “Killing Borrelia – an impossible job?” addressed various mechanisms associated with Borrelia burgdorferi that may help it to survive despite antibiotic treatment.
  • Dr. Jason A. Carlyon’s talk focused on Anaplasma phagocytophilum, the agent of human granulocytic anaplasmosis (HGA). This emerging tick-borne pathogen demonstrates stealth trickery, enabling it to avoid and even subvert immune cells.
  • Dr. Richard Marconi’s talk on “C-Di-GMP” described research demonstrating that the cyclic nucleotide, c-di-GMP, plays a critical role in regulating several important cellular processes.
  • Dr. Chris Earnhart’s talk described work developing a novel next-generation Lyme disease vaccine based on outer surface protein C. Osp C is expressed by all Bb species and strains and is expressed in the human host for several weeks before being down-regulated.
  • Dr. Robert S. Lane gave a brief overview of his research team's long-term studies of the ecology and epidemiology of Lyme disease in California, and then summarized some exciting recent findings regarding the genospecies and genotypes of Borrelia burgdorferi s. l. that infect the western black-legged tick and humans in this region.
  • Dr. Karen Newell Rogers presented a talk about novel ways to target chronic inflammation and chronic immune activation among patients with chronic Lyme disease. The primary controversy with Lyme disease has been whether the disease is the result of long-lasting bacterial infection or whether long-term symptoms result from a post-infectious, uncontrolled autoimmune response.
  • Dr. Robert Yolken’s talk on “Infections and Human Neuropsychiatric Diseases” focused on the Stanley Center’s work at Hopkins which has examined infectious triggers of psychosis.
  • Dr. Josep Dalmau’s talk on “The Clinical Spectrum and Cellular Mechanisms of Autoimmunity in NMDA and other synaptic receptors”. His pioneering work studying anti-NMDA receptor encephalitis shows how an immune response triggered by a tumor (e.g., ovarian teratoma) or perhaps an infectious process, results in antibodies that can attack critical receptors and synaptic proteins in the Central Nervous System involved in memory, behavior, cognition, and psychosis.
  • Dr. John Aucott’s talk on “Early Lyme disease” reported from the SLICE prospective cohort and his Maryland studies.
  • Dr. Reinhard K. Straubinger's talk on “Canine and Equine Lyme Borreliosis” focused on Lyme borreliosis in animals, especially in dogs and horses.
  • Dr. James Moeller presented a talk on “Immunologic aspects of neuropsychiatric illness: Lyme disease as model”.
  • Dr. Brian Fallon presented a talk on “Models of Chronic Lyme Disease”. The talk started with a review of the terms that refer to chronic symptoms and recommendations on how the the IDSA’s definition of Post-treatment Lyme Syndrome could be improved. This talk reviewed the evidence regarding models of persistent infection and/or persistent immune activation.
  • Dr. Andrew Walter reported on Ehrlichiosis and Hemophagocytic Lymphohistiocytosis (HLH) in cases of children diagnosed in Delaware.
  • Dr. Andrea Gaito provided an update on the clinical evaluation and treatment of Lyme Arthritis from an autoimmune perspective. Lyme arthritis occurs in sixty percent of patients with untreated Lyme disease.
  • Dr. Ingeborg Dziedzic presented an interesting (and at times entertaining) overview of how Lyme disease impacts the eye, emphasizing that the eye is in part like the skin and in part like the brain.
  • Dr. Vijay Thadani presented an overview of seizures and non-epileptic seizures, showing videos of both. Brain infections such as Lyme disease can lead to the development of epilepsy.
  • Dr. Steve Bock addressed complementary and integrative medicine approaches to the treatment of chronic Lyme disease.
  • Dr. Elizabeth Maloney addressed studies of antibiotic treatment of Lyme disease, providing a thoughtful and critical review of the literature to identify lessons, gaps, and future research needs.

READ MORE - Full Presentation Information Here:
2011 Lyme and Tick Borne-Diseases National Conference Summary Report

Read More

Tuesday, November 1, 2011

0 Institute of Medicine Final Report on October 2010 Tickborne Disease Workshop

Back in October 2010, the Institute of Medicine (IOM) held a workshop which was broadcast online live (and remains available at TV worldwide), Critical Needs and Gaps in Understanding: Prevention, Amelioration, and Resolution of Lyme and Other Tick-Borne Diseases: The Short-Term and Long-Term Outcomes.

The workshop participants were members of the Institute of Medicine, various researchers, doctors, and members of the Lyme disease patient advocacy community.

A preliminary summary report on the workshop was published by the IOM in April 2011. Now, an official final report has been published and is available on PubMed:

http://www.ncbi.nlm.nih.gov/pubmed/21977545

For a more detailed table of contents, try:

http://www.ncbi.nlm.nih.gov/books/NBK57020/

Editors: Committee on Lyme Disease and Other Tick-Borne Diseases: The State of the Science.

Source: Washington (DC): National Academies Press (US); 2011.
The National Academies Collection: Reports funded by National Institutes of Health.

Excerpt

It was obvious to participants at the workshop that a significant impasse has developed in the world of Lyme disease. There are conflicts within and among the science; policy; politics; medicine; and professional, public, and patient views pertaining to the subject, which have created significant misunderstandings, strong emotions, mistrust, and a game of blaming others who are not aligned with one’s views. Lines in the sand have been drawn, sides have been taken, and frustration prevails. The “walk in the woods” process of conflict resolution or a similar process seems necessary for creating a new environment of trust and a better environment for more constructive dialogue to help focus research needs and achieve better outcomes. Such a process does not imply a compromise of the science but rather is needed to shift to a more positive and productive environment to optimize critical research and promote new collaborations.



I'd have to say this is a good report for those who are new Lyme disease and other tickborne illnesses to read in order to get an idea of what issues concern researchers and patients.

In terms of an action item plan and treatment to help patients, though, this report is lacking in either and what is sorely needed at this point in time.

Read More

Sunday, August 28, 2011

0 News: In Wisconsin, Illnesses spread by ticks on rise

The Wisconsin Rapids Tribune has this article on tap today:

Illnesses spread by ticks on rise

Excerpts:
Consistent testing and an increase in deer ticks are driving up the number of tick-borne illnesses reported annually in Wisconsin, health officials said.

Statewide, cases of the bacteria infections anaplasmosis and ehrlichiosis -- both spread by deer ticks -- increased 70 percent from 2009 to 2010, when 546 cases were reported, according to state data.

"It's nice to be able to pick (anaplasmosis and ehrlichiosis) up, so a patient can be properly treated," said Diep Hoang Johnson, an epidemiologist for Wisconsin's Division of Public Health. "If lyme disease (tests) come back negative, they may not get treated and they may have one of these diseases."
and
"Marx said the increase in tick diseases other than lyme likely is because of more efficient testing and health care providers' improved efforts to report the illnesses."

Comments:

It's important to keep in mind that not every tick bite leads to a case of Lyme disease, and a negative Lyme disease test result does not necessarily mean the patient does not have Lyme disease (antibodies may not have been present at the time the test was taken) - nor does it indicate what other tickborne infections a person may have such as Ehrlichiosis or Babesiosis (as well as a few viruses which are spread by tick bites).

It's important for doctors and patients to familiarize themselves with the range of tickborne infections which are out there and be aware of the symptom spectrum for all them, as well as for doctors to take a detailed history from patients to see where they have traveled and resided to determine which tickborne diseases they are at greater risk of contracting. This provides a starting point for which coinfections to test for - but is by no means definitive as these diseases spread and even change in geographic location and density.

Read more of this news article at: http://www.wisconsinrapidstribune.com/article/20110828/CWS0101/108280518/Illnesses-spread-by-ticks-rise

Read More

The Camp Other Song Of The Month


Why is this posted? Just for fun!

Get this widget

Lyme Disease

Borrelia

Bacteria

Microbiology