scholarly journals Neuroblastoma – Molecular Basis for Diagnosis and Staging System

10.5772/36315 ◽  
2012 ◽  
Author(s):  
Priscila Torres ◽  
Ramn de J. Ropero Toirac ◽  
Jess de los Santos Ren ◽  
Samira Proveyer
Author(s):  
Ben O. Spurlock ◽  
Milton J. Cormier

The phenomenon of bioluminescence has fascinated layman and scientist alike for many centuries. During the eighteenth and nineteenth centuries a number of observations were reported on the physiology of bioluminescence in Renilla, the common sea pansy. More recently biochemists have directed their attention to the molecular basis of luminosity in this colonial form. These studies have centered primarily on defining the chemical basis for bioluminescence and its control. It is now established that bioluminescence in Renilla arises due to the luciferase-catalyzed oxidation of luciferin. This results in the creation of a product (oxyluciferin) in an electronic excited state. The transition of oxyluciferin from its excited state to the ground state leads to light emission.


Author(s):  
Darcy B. Kelley ◽  
Martha L. Tobias ◽  
Mark Ellisman

Brain and muscle are sexually differentiated tissues in which masculinization is controlled by the secretion of androgens from the testes. Sensitivity to androgen is conferred by the expression of an intracellular protein, the androgen receptor. A central problem of sexual differentiation is thus to understand the cellular and molecular basis of androgen action. We do not understand how hormone occupancy of a receptor translates into an alteration in the developmental program of the target cell. Our studies on sexual differentiation of brain and muscle in Xenopus laevis are designed to explore the molecular basis of androgen induced sexual differentiation by examining how this hormone controls the masculinization of brain and muscle targets.Our approach to this problem has focused on a highly androgen sensitive, sexually dimorphic neuromuscular system: laryngeal muscles and motor neurons of the clawed frog, Xenopus laevis. We have been studying sex differences at a synapse, the laryngeal neuromuscular junction, which mediates sexually dimorphic vocal behavior in Xenopus laevis frogs.


1998 ◽  
Vol 33 ◽  
pp. 65-77 ◽  
Author(s):  
Dominique Massotte ◽  
Brigitte L. Kieffer
Keyword(s):  

2009 ◽  
Vol 42 (17) ◽  
pp. 22
Author(s):  
BETSY BATES
Keyword(s):  

2011 ◽  
Vol 81 (4) ◽  
pp. 238-239 ◽  
Author(s):  
Manfred Eggersdorfer ◽  
Paul Walter

Nutrition is important for human health in all stages of life - from conception to old age. Today we know much more about the molecular basis of nutrition. Most importantly, we have learnt that micronutrients, among other factors, interact with genes, and new science is increasingly providing more tools to clarify this interrelation between health and nutrition. Sufficient intake of vitamins is essential to achieve maximum health benefit. It is well established that in developing countries, millions of people still suffer from micronutrient deficiencies. However, it is far less recognized that we face micronutrient insufficiencies also in developed countries.


VASA ◽  
2001 ◽  
Vol 30 (Supplement 58) ◽  
pp. 6-14 ◽  
Author(s):  
Edmonds ◽  
Foster

The diabetic ischaemic foot has become an increasingly frequent problem over the last decade. However, we report a new approach consisting of a basic classification, a simple staging system of the natural history and a treatment plan for each stage, within a multi-disciplinary framework. This approach of "taking control" consists of two parts: 1. long-term conservative care including debridement of ulcers (to obtain wound control), eradication of sepsis (micribiological control), and provision of therapeutic footwear (mechanical control), and 2. revascularisation by angioplasty and arterial bypass (vascular control). This approach has led to a 50% reduction in the rate of major amputations in patients attending with ischaemic ulceration and absent foot pulses from 1989 to 1999 (from 4.6% to 2.3% per year). Patients who underwent angioplasty increased from 6% to 13%. Arterial bypass similarly increased from 3% to 7% of cases. However, even with an increased rate of revascularisation, 80% of patients responded to conservative care alone. This,we conclude, is an essential part of the management of all patients with ischaemic feet.


Praxis ◽  
2016 ◽  
Vol 105 (1) ◽  
pp. 47-52 ◽  
Author(s):  
Andreas Lohri

Zusammenfassung. Maligne Lymphome unterteilen sich zwar in über 60 Entitäten, das grosszellige B-Zell-Lymphom, das follikuläre Lymphom, der Hodgkin und das Mantelzell-Lymphom machen aber mehr als die Hälfte aller Lymphome aus. Im revidierten Ann Arbor staging system gelten die Suffixe «A» und «B» nur noch für den Hodgkin. «E» erscheint nur noch bei Stadien I und II. Eine Knochenmarksuntersuchung wird beim Hodgkin nicht mehr verlangt, beim DLBCL (Diffuse large B cell lymphoma) nur, falls das PET keinen Knochenmark-Befall zeigt. Der PET-Untersuchung, speziell dem Interim-PET, kommt eine entscheidende Bedeutung zu. PET-gesteuerte Therapien führen zu weniger Toxizität. Gezielt wirkende Medikamente mit eindrücklicher Wirksamkeit wurden neu zugelassen. Deren Kosten sind hoch. Eine strahlen- und chemotherapiefreie Behandlung maligner Lymphome wird in Zukunft möglich sein.


Sign in / Sign up

Export Citation Format

Share Document