Navigation Links
Age-Dependent Alterations Not Specific For Alzheimers Disease

Alzheimers disease (AD) has lately been suggested to be a systemic disorder, not confined only to the brain. An increasing volume of evidence indicates that AD is also associated with peripheral vascular changes //that might be important markers in tests of given pathophysiological hypotheses.

Researchers from the Faculty of Medicine, University of Szeged, Hungary, hypothesized that the onset of AD affects cholinergic microcirculatory patterns, and set out to compare the levels of spontaneous forehead and forearm flow motion in different age groups and to establish whether aging influences the rhythmic oscillation of the microvasculature. AD-specific alterations were also sought.

A total of 99 individuals were enrolled in the study. Oscillations in laser Doppler signals derived from the forehead and forearm skin were analyzed in 77 healthy probands from 4 various age groups (ranging between 15 and 77 years) and 22 late-onset sporadic AD patients.

A characteristic pattern of oscillations in the microcirculatory blood flux was observed in the forehead skin, the occurrence of which correlated inversely with age. The occurrence of forehead vasomotion pattern was 100% in the teenagers, whereas it was significantly less in the elderly control subjects (32%) and in the AD patients (18%).

Forearm reactive hyperemia was provoked by 1-min occlusion of the brachial artery, and the vascular reactivity was calculated. This phenomenon also proved to be age-dependent, but the process was not related to AD. Results indicate that the lack of forehead vasomotion reflects aging better than does the forearm vasomotion. Both of these functions are preserved in AD.

The novel findings from this study, which appears in the journal Microvascular Research (available online 14 October 2005) are that the forehead flow motion displays an age-dependent pattern. Also, under resting conditions, low-frequency oscillation in the forearm microcirculat ion was found in one-third of the subjects examined and no age-dependence was observed and occlusion of the brachial artery provokes flow motion in young, but not in elderly subjects. In addition, results indicate that the level of vascular reactivity decreases with aging, and there is no characteristic difference in the different flow motion patterns examined for AD patients.

Data from this study indicate that the oscillations in the microcirculation exhibit an age-dependent pattern, which is more pronounced in the forehead than in the forearm. These results furnish additional information characterizing the aging of the skin.
'"/>




Related medicine news :

1. Continual Fear Linked to Genetic Alterations in the Brain
2. Ape Humans? Alterations in Proteins Affects Genes.
3. Response to chemotherapy could be measured by Prostate-Specific Antigen Doubling Time
4. Heart Drug Also Effective In Preventing Specific Causes Of Death
5. Specific Changes In A Particular Gene Found To Increase The Risk of Alzheimer’s Diseas
6. New Race –Specific drug
7. Developing Specific Skills Ensure Better Grades In US Kids
8. Specific Immune Mechanism against DNA viruses
9. The Publication Of Surgeon Specific Death Rates Raises Controversy
10. Timing of Food Consumption Activates Genes in Specific Brain Area
11. By Targeting Specific Germs, Hospital Hopes to Improve Pneumonia Treatment
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:2/11/2016)... ... ... Journal of Pain Research has seen a significant increase in its ranking ... Scopus database (Elsevier B.V.) and is a measure of a journal's impact. It takes ... year period and also the importance of the journals where the citations came from. ...
(Date:2/11/2016)... , ... February 11, 2016 , ... ... will discuss how to improve care by making data on heart procedures public ... The Summit on Transparency and Public Reporting of Pediatric and Congenital Heart Disease ...
(Date:2/11/2016)... NJ (PRWEB) , ... February 11, 2016 , ... ... the call for nominations seeking candidates for the Board of Commissioners. Individuals interested ... passion, skills and experience with diversity of clinical practice settings and across allied ...
(Date:2/11/2016)... ... February 11, 2016 , ... Colorado spine surgeon, Donald Corenman, ... 334 spine surgeons to know in 2016 . The list consists of spine surgeons ... surgery. , Dr. Corenman understands the importance of clinical excellence; he has been ...
(Date:2/11/2016)... ... February 11, 2016 , ... The annual list showcases the ... of DataPoint’s team dedication and commitment to the SharePoint ecosystem. A panel ... list. The panel’s goal is to recognize and promote technology entrepreneurship. , The ...
Breaking Medicine News(10 mins):
(Date:2/11/2016)... Scientists from Silicon Biosystems Menarini today ... door to genetic analysis of previously preserved tumor ... isolate with 100 percent purity. Utilizing the com­pany,s ... various stages of development, the researchers were able ... are clinically relevant, and may change the way ...
(Date:2/11/2016)... 11, 2016  AcelRx Pharmaceuticals, Inc. (NASDAQ: ACRX ... made at the 38th annual John A. Boswick ... which is being held February 14-18, 2016 in ... latest advancements in wound healing, burn care, and infection ... Australian-New Zealand Burns Association, Academy of Physicians in Wound ...
(Date:2/11/2016)... 2016  Ampio Pharmaceuticals, Inc. (NYSE MKT: AMPE) announced ... a Controlled Equity Offering SM Sales Agreement with ... Macaluso , Chairman and CEO, stated "During our most ... currently raising money and that we have enough money ... still complete all of our current objectives and nothing ...
Breaking Medicine Technology: