Tuesday, 19 January 2016

NEJM Week of 3rd September 2015 (#6)

Professor Brian Andrews NEJM Recommendations
Week of the 3rd September 2015 (#6)
University of Notre Dame Australia
(Fremantle campus)

Articles Recommended for Medical Students

ORIGINAL ARTICLE

Clinical Features and Outcomes of Takotsubo (Stress) Cardiomyopathy

http://www.nejm.org/doi/full/10.1056/NEJMoa1406761

 

This is an important study on Takotsubo cardiomyopathy (“broken heart syndrome”). Several features should be noted: i) should be considered in the DD of acute coronary syndrome and/or acute heart failure, ii) the disorder has a previously unrecognised significant morbidity and mortality and iii) physical triggers may be more common than emotional triggers. This entity is probably much more common than appreciated and is undoubtedly underdiagnosed. The exact cause is still unclear. Recommended for MED300 and MED400.

REVIEW ARTICLE

Prenatal Factors in Singletons with Cerebral Palsy Born at or near Term

http://www.nejm.org/doi/full/10.1056/NEJMra1505261

 

This review article should be read by MED300 (especially during the O&G rotation) and MED400 students. It considers the possible pathological causes of cerebral palsy but, in particular, notes how little is really known about causation.

REVIEW ARTICLE

In-Flight Medical Emergencies during Commercial Travel

From a personal perspective, medical “emergencies” occur more frequently than 1:640 as quoted and undoubtedly is due to the lack of reporting of many incidents, frequently well managed in a “hostile environment.” Also of interest, when travelling on Australian carriers, a physician has a legal obligation to assist in a medical emergency, not just an ethical obligation as required by US carriers. This is an interesting and revealing read.

CLINICAL PROBLEM-SOLVING

On the Nose

This is a fun exercise in problem solving and clinical reasoning. The treating physician should have been more forceful with the patient in recommending earlier investigations (lung and nose biopsy) which would have resulted in fewer investigations, reduced morbidity, less cost and earlier diagnosis and treatment. You go ‘where the money is.”

Important Articles Related to Mechanisms of Disease and Translational Research

EDITORIAL

Unraveling the Function of FTO Variants

http://www.nejm.org/doi/full/10.1056/NEJMe1508683


ORIGINAL ARTICLE

FTO Obesity Variant Circuitry and Adipocyte Browning in Humans

For those with any serious interest in the biology of obesity, the editorial and the study provide an update on the genetics of obesity; the role of adipocytes, especially the inducible “beige” adipocyte; the possible role of the “non-coding” intron in gene function and mechanisms by which gene manipulation could lead to heat dissipation and weight loss via depolarization of the inner mitochondrial membrane and proton transfer in the beige and brown adipocyte.
At least try to read the editorial which summarises this extensive study.  Recommended for MED200 for basic science and genetics.


EDITORIAL

Treating Myeloproliferation — On Target or Off?


ORIGINAL ARTICLE

A Pilot Study of the Telomerase Inhibitor Imetelstat for Myelofibrosis


ORIGINAL ARTICLE

Telomerase Inhibitor Imetelstat in Patients with Essential Thrombocythemia

At last, a new approach to the management of myeloproliferative disorders in addition to allogeneic stem cell transplantation and JAK inhibitors (ruxolitinib).
Read at least the Editorial which provides an overview of the two studies. There is a review of the telomere and telomerase for MED100 and MED200.
Further, while the drug imetelstat (a 13-mer lipid-conjugated antisense oligonucleotide which binds to and inactivates human telomerase reverse transcriptase) inhibits telomerase, there is no documented change in telomere length in the patients (possibly method related) suggesting that the drug exhibits a separate mechanism of action in these disorders. The results were extremely promising, particularly in patients with primary thrombocytosis. Imetelstat reduced the JAK mutant allele burden by 71%, inhibited the megakaryocyte CFU assay by up to 92%  and patients obtained a complete clinical and haematological response in 94% (17 of 18 patients). The results in patients with myelofibrosis, while less dramatic, were still impressive. This type of study provides an insight into where medicine is heading in the future.

Perspective
INTERNATIONAL HEALTH CARE SYSTEMS

Perennial Health Care Reform — The Long Dutch Quest for Cost Control and Quality Improvement

This is a perspective article reviewing Health Care Reform in the Netherlands.  The concept of “cradle to grave” comprehensive medical care has been changed because of the- cost of the ageing population. This change in Health Care is now closer to the US system of the Affordable Care Act introduced under extreme duress by the Democratic Obama administration. Only time will tell as to the outcomes.

Other areas not reviewed but of interest

CLINICAL IMPLICATIONS OF BASIC RESEARCH

Type 2 Diabetes, SGLT2 Inhibitors, and Glucose Secretion


http://www.nejm.org/doi/full/10.1056/NEJMcibr1506573