World-wide medical news for clinical use. Contributions edited by Dr.A.Franklin MBBS(Lond)Dip.Phys.Med (UK) DPH & DIH(Tor.)LMC(C) FLEx(USA) Fellow Med.Soc.London
07 December 2013
CANADA: Treponema pallidum infection in NUNAVUT:territory popn 32,000 ( Iqualuit- 7,000 )
SYPHILIS - CANADA (04): (NUNAVUT) INCREASED CASES, REQUEST FOR
INFORMATION
**************************************************************************
A ProMED-mail post
ProMED-mail is a program of the
International Society for Infectious Diseases
Date: Thu 5 Dec 2013
Source: CBC News [edited]
A syphilis outbreak in Nunavut [territory] that began last year [2012]
continues to concern health officials. Nunavut health officials say
there have been 74 confirmed cases of the sexually transmitted
infection in Nunavut since May 2012 with new cases every week. Most
are in Iqaluit [the capital city of Nunavut].
Dr. Maureen Baikie, Nunavut's chief medical officer of health, is
urging people to get tested for syphilis even if they don't have
symptoms, as the infection can have serious health consequences. "The
important things about syphilis are, 1st of all, people can have it
and not know they have it, which is why it's so important to go and
get tested," said Dr. Maureen Baikie, Nunavut's chief medical officer
of health. "The other thing is it can be a lifelong infection, and the
longer you have it without treatment, the more serious the
consequences can be."
The infection is easily cured with antibiotics, but if left untreated
it can cause severe damage to the heart, blood vessels and brain, and
even death.
Health officials are encouraging people to get tested and practice
safer sex, by decreasing the number of sexual partners and using a
condom during sex.
--
Communicated by:
ProMED-mail from HealthMap Alerts
[Nunavut, the largest federal territory of Canada, is the size of
Western Europe; it comprises a major portion of Northern Canada, and
has an estimated population in 2010 of about 33 000, mostly Inuit
(). The territorial capital
Iqaluit, which had a population in 2011 of 6699, is located on the
south coast of Baffin Island ().
Iqaluit was founded in 1942 as an American airbase to provide a
stopover and refueling site to support the war effort in Europe
(). Iqaluit is only
accessible by aircraft and, subject to ice conditions, by boat.
Nunavut did not officially become a territory until 1999; prior to
1999, data for Nunavut was combined with Northwest Territories. In
2008, no cases of infectious syphilis (primary, secondary and early
latent stages) were reported in Nunavut
();
in 2012, 13 cases of infectious syphilis, all of them in Iqaluit, were
reported in a prior ProMED-mail post (Syphilis - Canada (03): (NU) RFI
20120912.1291334), where we were told that "the pattern of
transmission in Iqaluit has been largely the same as in other parts of
Canada and other countries."
The rates of infectious syphilis in Canada, as in the United States,
have been increasing since about 2000. In Canada, the male-to-female
rate ratio increased from 1.5:1.0 in 1999 to 6.4:1.0 in 2008,
reflecting that more males than females were reported with infectious
syphilis, and this disparity increased over time
().
In 2008, men accounted for 86.1 percent of reported cases. Between
1999 and 2008, the rate in men increased from 0.7 to 7.3 per 100 000
and in women increased from 0.5 to 1.1 per 100 000. In men, the
highest reported rate of infectious syphilis was shared between 25-29
year olds and 30-39 year olds (13.3 per 100 000)
().
Together, these age groups accounted for almost 40 percent of reported
cases in men in 2008. In women, the highest reported rate was in 20-24
year olds (3.6 per 100 000). In males, the greatest increase in
reported rates of infectious syphilis between 1999 and 2008 was in
25-29 year olds.
Most of the Canadian syphilis outbreaks have been in men who have sex
with men (MSM), and other outbreaks were related to the sex trade, but
some have been locally acquired infections in heterosexual persons
().
In Calgary, Alberta, as in the United States, a syphilis outbreak has
been associated with the acquisition of anonymous sex partners through
the internet.
In a ProMED-mail post in February 2013 (Syphilis - Canada: (NU) RFI
20130214.1542486), we were told that there were more than 30 cases in
Iqaluit since the outbreak began in May 2012, and the outbreak was
spreading to other "regions." According to the news report above, that
number of cases has risen to 74 with new cases every week, again
mostly occurring in Iqaluit. Some of this increase could be due to an
increase in screening for syphilis, but details of the outbreak such
as gender, sexual behavior, ethnicity, use of illicit drugs, or
prostitution were again not given then, nor are they given in the news
report above. Such information would be greatly appreciated from
knowledgeable persons.
Inuit comprise about 58 percent of Iqaluit's population
(), and they may
constitute a large portion of the syphilis cases in Iqaluit, as in the
Canadian province of Alberta, where infection rates of infectious
syphilis are reported to be 18.6 times higher among young Aboriginal
women and 2.8 times higher in Aboriginal men compared to their
Caucasian counterparts
().
These young Aboriginal women are reported to be largely linked to the
"street based" sex trade, are often involved with problematic
substance use, and are poor. (Aboriginal peoples in Canada comprise
the 1st Nations, Inuit, and Metis; Metis are people with mixed 1st
Nations and European ancestry).
06 December 2013
PHILADELPHIA: WILLS EYE HOSPITAL : FREE CME
Wills Eye Knowledge Portal
www.willseyeonline.org
Wills Eye
Knowledge Portal
Free Registration.
Free CME.
Sign Up Here!
Experience Wills Eye education online at www.willseyeonline.org
Learn from top doctors at Wills Eye Institute.
Experience web-based medical education.
Earn CME credits from world-renowned experts.
----------------------------------
CME Courses
Strabismus Disorders
0.5 AMA PRA Credit
Strabismus is a common condition in children, occurring in about 4% of children in the United States. If untreated, strabismus can lead to untreatable visual compromise once the child is grown. The treatments for strabismus have evolved with scientific studies. Given the potential to minimize a lifetime of sub-optimal vision, physicians should be aware and up-to-date on this topic as significant practice gaps exist in awareness of strabismus disorders.
------------------------------------
ALL CME COURSES ON THE WILLS EYE KNOWLEDGE PORTAL ARE FREE!
------------------------------------
Wills Eye
39th Annual Ophthalmology
Review Course
March 1-5, 2014
A comprehensive review of the basic principles and recent advances in ophthalmology for Residents and Fellows.
Information:
(215) 440-3169
Wills Eye
65th Annual Conference
March 6-8, 2014
Philadelphia, PA
willsconference.org
This is a three day conference designed for comprehensive ophthalmologists, specialists, and allied health personnel. The conference will review clinical, diagnostic and therapeutic approaches to eye problems related to all ophthalmic sub-specialties.
Follow us on Twitter
Like us on Facebook
View our videos on YouTube
December 2013
Corneal Trauma, Abrasions, Chemical Burns, Perforating Trauma
Presenter: Kristin Hammersmith, MD
Dr. Hammersmith is an assistant surgeon on the Cornea Service and Director of the Cornea Fellowship Program at Wills Eye Hospital. She is also an instructor at the Jefferson Medical College of Thomas Jefferson University. Dr. Hammersmith interests include severe ocular surface diseases such as dry eye, blepharitis, ocular cicatricial pemphigoid, chemical burns, and the potential of limbal cell transplantation to help patients with these conditions.
Central Retinal Venous Obstruction
Presenter: Joseph I. Maguire, MD
Dr. Maguire is an attending surgeon on the Retina Service at Wills Eye Hospital and an associate professor of ophthalmology at Thomas Jefferson University. He is a past Retina Service President and Scientific Director of the Eye Reseach Institute (ERI). He is currently a principal investigator in the VEGF-trap clinical trial and the National Institutes of Health sponsored AREDS 2, and has been clinical co-investigator in several completed and ongoing clinical trials evaluating novel treatments for diabetic retinopathy and AMD.
Low Vision 101: Custom Refractions, Prisms, and Optics; and
Low Vision 201: Rehabilitation
Presenter: Scott Edmonds, OD
Dr. Edmonds is Co-Director of the Low Vision and Contact Lens Service at Wills Eye Hospital. He has written and lectured extensively on clinical topics of post operative care, low vision, contact lenses, and ocular diseases as well as management topics of managed care and medicare. Dr. Edmonds has been recognized as Optometrist of the year by the Philadelphia Optometric Society, the Chester-Delaware Optometric Society, and Pennsylvania Optometric Association.
IOP Variation: Should It Affect Our Management of Glaucoma?
Presenter: L. Jay Katz, MD, FACS
Dr. Katz is the director of the glaucoma service at the Wills Eye Hospital and professor of ophthalmology at Thomas Jefferson University. He has published more than 160 articles in peer reviewed journals and has authored, coauthored, or edited more than 30 books and book chapters. He has received numerous awards including the Physicians Recognition Award from the American Medical Association and an Honor award from the American Academy of Ophthalmology. Dr. Katz has been an investigator in several landmark multicenter trials.
Additional Highlights:
Importance of Adherence and Quality of Life in People Under Glaucoma Treatment
George L. Spaeth, MD
Introduction to Ocular Pathology
Ralph C. Eagle, MD
Biopsy Techniques
Edward H. Bedrossian, MD
Contemporary Management of Retinal Detachment Repair
Gaurav K. Shah, MD
Herpetic Disease of the Anterior Segment
Brad Feldman, MD
Visiting Professor Lectures and Cases
Joshua R. Ehrlich, MD; Timothy V. Johnson, MD;
Jared D. Peterson, MD
Chiefs' Rounds
Anthony W. Farah, MD; Nina Ni, MD; Michael S. Ehrlich, MD; Kristin M. DiDomenico, MD; Blair K. Armstrong, MD
01 December 2013
CANCER CELL:: Proteasome inhibitor mechanism in MM.
Cancer Cell, Volume 24, Issue 3, 289-304, 9 September 2013
Copyright © 2013 Elsevier Inc. All rights reserved.
10.1016/j.ccr.2013.08.009
Authors
Chungyee Leung-Hagesteijn, Natalie Erdmann, Grace Cheung, Jonathan J. Keats, A. Keith Stewart, Donna E. Reece, Kim Chan Chung, Rodger E. Tiedemann
Highlights
MM tumors contain Xbp1s− progenitors that survive proteasome inhibition
Xbp1s absence arrests secretory maturation and ER loading, reducing ERAD dependence
PI resistance mechanisms in patients differ from in vitro models
These data help explain the failure to cure MM with current therapy
Summary
Proteasome inhibitor (PI) resistance mechanisms in multiple myeloma (MM) remain controversial. We report the existence of a progenitor organization in primary MM that recapitulates maturation stages between B cells and plasma cells and that contributes to clinical PI resistance. Xbp1s− tumor B cells and pre-plasmablasts survive therapeutic PI, preventing cure, while maturation arrest of MM before the plasmablast stage enables progressive disease on PI treatment. Mechanistically, suppression of Xbp1s in MM is shown to induce bortezomib resistance via de-commitment to plasma cell maturation and immunoglobulin production, diminishing endoplasmic reticulum (ER) front-loading and cytotoxic susceptibility to PI-induced inhibition of ER-associated degradation. These results reveal the tumor progenitor structure in MM and highlight its role in therapeutic failure.
25 November 2013
UK: Max HOTOPF "HEALTHCARE EUROPA"
Too little, too late as the health supertankers start to turn
What is to be gleaned from the latest OECD Health at a Glance 2013? The healthcare service supertankers are starting to alter course but progress remains slow and icebergs of diabetes, dementia and longer life expectancies dwarf expenditure.
News
French state plans activity ceilings for hospitals
The French private hospital sector is enraged by the government’s latest ploy. Behind the scenes, however, we suspect that there is a deal to be done.
Asklepios issues loan note - so what happens next?
Asklepios has raised €350m with a promissory note. We talk to President of the company Bernard Broermann, and look at how the Helios-Rhoen deal has reshaped the German hospital sector.
Hungary - healthcare reform paying off
Hungarian sources say that the healthcare reforms pushed through by minister of state for health, Dr. Miklós Szócska, under the Fidesz government, has succeeded in cutting costs substantially. Meanwhile, the government has upped healthcare expenditure ahead of 2014 elections.
Medical Properties plans more deals in Europe
Medical Properties Trust (MPT), the US healthcare REIT specialising in hospital property, is scouring Northern and Western Europe for deals, following its purchase of the property portfolio of RHM Kliniken. We take a look at its strategy.
MC bids for Slotervaart as Dutch hospital sector opens up
The Netherlands is on track to pass legislation which would enable private investors to buy shares in the not-for-profit general hospital sector which provides almost all inpatient acute care in the country. Meanwhile, it looks as though Slotervaart, a privatised hospital whose shareholders have been fighting each other looks likely to be taken over by MC Groep, which is one of the first privatisation players in the country. We talk to Chris Van Den Haak, partner at BDO Netherlands, who has just written a report on the financial health of the Dutch general hospital sector. Are we about to see a tsunami of privatisation?
Interview/Feature
Interview: Dag Andersson, CEO, Diaverum
With close to 300 dialysis centres in 19 countries, Dag Andersson claims to run “the most global healthcare service in the world”. We look at how Diaverum is starting to offer a much wider range of services. The company is majority owned by private equity house Bridgepoint, which hired JP Morgan in January 2013 to review its strategic options.
23 November 2013
SWISS MEDICINE: BLOOD-BRAIN BARRIER
Breaking and building the wall: The biology of the blood-brain barrier in health and disease
21/11/2013
Blood-brain-barrier
The blood-brain barrier (BBB) is a complex feature of brain endothelial cells that restricts the passage of blood-borne molecules into the brain parenchyma, while ensuring the delivery of essential nutrients and selected biomolecules. Brain vasculature is anatomically distinct from that of other organs and comprises endothelial cells, pericytes and astrocytes, which collectively form the neurovascular unit (NVU). This review provides a brief overview of the cellular components of the NVU and BBB characteristics. In addition, the regulation of brain vasculature by peripheral factors such as diet and systemic disease is discussed.
Abstract
Proper functioning of the brain vasculature is critical for the maintenance of optimal brain function. Brain parenchyma is separated from blood within the cerebral vasculature by the blood-brain barrier (BBB). The BBB is a collective term for brain-specific, endothelial cell characteristics that restrict the passage into the brain of blood-borne molecules that ensure delivery of essential nutrients and selected biomolecules. The principal features of the vertebrate BBB are closed cell-cell junctions, a low rate of transcytosis, the expression of various solute carriers and ATP-binding cassette transporters. In addition, blood vessels in the brain are anatomically distinct. The capillary bed of brain vasculature has full longitudinal coverage by pericyte processes. Furthermore, brain vasculature is covered by glial processes, the so-called astrocyte end-feet. The term neurovascular unit (NVU) is often used to describe brain blood vessels in order to underline the intimate physical and functional connection between the brain tissue and blood vessels.
Another special feature of brain vessels is that they are immunologically quiescent. Specifically, the expression of leucocyte-adhesion molecules is low and few peripheral leucocytes enter into the brain parenchyma.
The development and maturation of the BBB and NVU is directed by signals from the surrounding neural tissue and cells forming the NVU. The formation of BBB specific cell-cell junctions and expression of transporters for glucose and biomolecules on endothelial cells is induced by the neuroepithelium, whereas pericytes regulate the low transcytosis rate of brain endothelium. Astrocytes have merged as regulators of BBB immune quiescence and brain water transport.
Endothelial cell-cell junctions, the most intensively studied component of the BBB, are composed of adherens and tight junctions, which are established by transmembrane proteins mediating homophilic extracellular interaction. The brain endothelium is equipped with a transport system that provides a selective route for nutrients, ions and bioactive macromolecules, and ensures elimination of toxic molecules. These transporters are expressed in a polarised manner that allows the effective exchange of molecules and ions between blood and the brain parenchyma.
The list of CNS pathologies (e.g. leucoencephalopathies, arteriopathies, brain calcifications) caused by the dysfunction of cellular and acellular components of the NVU is long. In addition, BBB breakdown is associated with common neurodegenerative diseases such as Alzheimer’s and Parkinson’s diseases). Pathological changes in the BBB also occur in the setting of peripheral diseases, e.g., acute liver failure and hypoxic conditions such as cardiac arrest. A detailed mechanistic understanding of BBB alterations in these conditions is lacking. Even less well understood is how the BBB is maintained and regulated in the healthy organism.
The molecular development and regulation of the BBB is currently under intense investigation. Clearly, a collective effort from research groups working in different fields (vascular biologists, physiologists, neurobiologists etc.) is needed to better understand the development and homeostasis of complex structures such as the BBB and NVU. Although the brain vascular development and deregulation during pathological conditions is better understood at the molecular and cellular level, the majority of specific questions remain unanswered.
This is a summary of an open access article on www.smw.ch. Must be cited as: Keller A. Breaking and building the wall: the biology of the blood-brain barrier in health and disease. Swiss Med Wkly. 2013,143:w13892.
- See more at: http://blog.smw.ch/breaking-and-building-the-wall-the-biology-of-the-blood-brain-barrier-in-health-and-disease/#sthash.Y8ejfNBj.dpuf
17 November 2013
EUROPEAN MULTIPLE MYELOMA ACADEMY: FREE CONFERENCE VIDEOS 2013
http://emma.medroom.at/#WSLIST
LANCET: INFECTIOUS DISEASES COMMISSION on ANTIBIOTIC RESISTANCE
http://www.reactgroup.org/uploads/news/Comments-on-The-Lancet-Infectious-Diseases-Commission-on-Antibiotic-Resistance-Nov2013.pdf
Subscribe to:
Posts (Atom)