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Topic: Homeostatic

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In the News (Wed 24 Apr 19)

  Homeostasis - Wikipedia, the free encyclopedia
Multicellular organisms require a homeostatic internal environment, in order to live; some ecologists believe this principle also applies to the global environment.
Generally, with the recognition of divergence from the homeostatic condition, positive feedbacks are called into play, whereas once the homeostatic condition is approached, negative feedback is used for "fine tuning" responses.
Similarly such forest glades contribute ecological services, such as the regulation of microclimates or of the hydrological cycle for an ecosystem, and a number of different ecosystems act together to maintain homeostasis perhaps of a number of river catchments within a bioregion.
en.wikipedia.org /wiki/Homeostasis   (2007 words)

 Sociable machines - Homeostatic regulation mechanisms
Kismet's drive processes are designed such that the robot is in homeostatic balance when it is interacting well with people, and when the interactions are neither overwhelming nor under-stimulating.
In this manner, the robot's ability to satisfy its drives and remain in a state of "well being" is reflected by its affective state.
When in the homeostatic regime, a drive contributes to those processes characterized by positive valence and balanced arousal.
www.ai.mit.edu /projects/sociable/homeostatic-regulation.html   (567 words)

 Instructions for Homeostatic Colour Network Demos
The first Homeostat was built by Ross Ashby in the early 1950s and is described in his book 'Design for a Brain', Chapman and Hall, 2nd Edition, 1966 (ISBN 0-412-20090-2).
In all of the demos the activation of the units is perturbed by a wave that crosses from left to right across the network, causing the activation of the units to go outside their stable range (visualized by the units changing colour to a red/pink).
The next demo shows the homeostatic network code incorporated into Trevor Graham's simulation framework, which is based on a simluation of the buoy network written by Rob Saunders.
www.cogs.susx.ac.uk /users/jonba/homeostat/instructions.htm   (2260 words)

 HSO probiotics Homeostatic Soil organisms Primal Defense
Homeostatic Soil Organisms - HSO probiotics are friendly bacteria or microflora that are found in Primal Defense.
Homeostatic Soil Organisms - HSO probiotics - easily implant in colons that are pH imbalanced or have too many harmful bacteria.
Homeostatic Soil Organisms - HSO probiotics - are in a substrate of trace minerals, enzymes and proteins from plant life that contain over 70 trace minerals and micronutrients.
www.buyprobiotics.net /whatarehsos.shtml   (490 words)

 Essay: Homeostatic mechanisms I have monitored. - Coursework.Info
Homeostatic mechanisms I have monitored Homeostasis comes from the Greek words, homeo meaning constant and status meaning state or condition.
Key measurements of homeostatic functions are body temperature, breathing patterns, lung volume (peak flow), and blood pressure.
A change in these can help identify dysfunction of homeostatic balance which could be fatal if not treated or could be signs of shock when an accident has occurred.
www.coursework.info /ii/41361.html   (264 words)

 IL-7 is critical for homeostatic proliferation and survival of naive T cells -- Tan et al. 98 (15): 8732 -- Proceedings ...
IL-7 is critical for homeostatic proliferation and survival of naive T cells -- Tan et al.
Current studies on homeostatic T cell proliferation are strictly limited to in vivo experiments on live animals.
Homeostatic proliferation of naïve T cells in vivo crucially depends on IL-7.
www.pnas.org /cgi/content/full/98/15/8732   (4772 words)

 Competition for self ligands restrains homeostatic proliferation of naive CD4 T cells -- Moses et al. 100 (3): 1185 -- ...
One essential signal for homeostatic proliferation is provided by TCR stimulation by self peptide/MHC complexes (1-4, 9).
mice is the considerably lesser degree of homeostatic proliferation
to inhibit homeostatic proliferation of a monoclonal TCR Tg population.
www.pnas.org /cgi/content/full/100/3/1185   (4979 words)

 A Ligand for the Chemokine Receptor CCR7 Can Influence the Homeostatic Proliferation of CD4 T Cells and Progression of ...
Homeostatic proliferation induced by irradiation or CCL21 lead to the same CD4 T cell phenotype.
Homeostatic CD4 T cell proliferation is not dependent on lymphopenia in the presence of CCL21 overexpression.
Homeostatic expansion and phenotypic conversion of naive T cells in response to self peptide/MHC ligands.
www.jimmunol.org /cgi/content/full/167/12/6724   (4350 words)

 Jordan Rubin recovery from crohns colitis using Homeostatic Soil Organisms HSOs probiotics
It used to be that a pioneering farmer working his fields, the so-called 'sod-buster,' who became hungry simply dug into the ground, pulled up some carrots, brushed off the dirt, and chomped away on vegetables containing the residual dirt and all.
Homeostatic soil organisms - truly potent probiotics - comprise the main ingredients in Primal Defense; their inclusion is vital for the illness prevention and therapeutic efficacy of the product.
The homeostatic soil organisms act as neutralizers of the poisons that ordinarily float in our food supply.They come from unpolluted sources and are currently cultured in a pristine environment maintained in laboratories operating in the United States.
www.crohns.net /Miva/education/articles/HSO_PrimDefExplore.htm   (3444 words)

 In Vivo Survival and Homeostatic Proliferation of Natural Killer Cells -- Prlic et al. 197 (8): 967 -- The Journal of ...
Conversion of naive T cells to a memory-phenotype in lymphopenic hosts is not related to a homeostatic mechanism that fills the peripheral naive T cell pool.
Naive B lymphocytes undergo homeostatic proliferation in response to B cell deficit.
IL-7 is critical for homeostatic proliferation and survival of naive T cells.
www.jem.org /cgi/content/full/197/8/967   (5387 words)

 Homeostatic Plasticity
Homeostatic plasticity -- a seemingly complex phrase that is best summed up as the automatic transmission of the brain.
Michael Ehlers's recent research has discovered a "reset switch" for neurons that increases or decreases their sensitivity to their neighbors signals.
Health Central has the details, which note that homeostatic plasticity is distinct from more rapid changes in neural circuitry, such as with the formation of memories.
cognews.com /1067506290/index_html   (189 words)

 Homeostatic Soil Organisms, HSOs Studies
HSOs are considered "super" probiotics because they are grown in a base of nutrient-rich Superfoods, providing more than 100 naturally occurring live enzymes, vitamins, minerals, amino acids, antioxidants, chlorophyllins and plant saponins.
Energy levels, memory and concentration: Seventy patients with no known pathologies were given Homeostatic Soil Organism™ or a placebo.
A 90-day, 70-patient, blind placebo-controlled clinical study published in Progress in Nutrition, evaluated the effectiveness of Primal Defense™ Homeostatic Soil Organism™ as a primary treatment for chronic digestive disorder and malabsorption syndrome.
www.miracleii-4u.com /hsos-clinical-studies.htm   (1351 words)

 Homeostatic Synaptic Plasticity Can Explain Post-traumatic Epileptogenesis in Chronically Isolated Neocortex -- ...   (Site not responding. Last check: 2007-09-18)
The conductance changes required in the default model incorporating all homeostatic synaptic processes are shown for comparison (filled circle).
Homeostatic synaptic plasticity restores burst firing after deafferentation in a simplified firing rate model.
Turrigiano GG (1999) Homeostatic plasticity in neuronal networks: the more things change, the more they stay the same.
cercor.oxfordjournals.org /cgi/content/full/15/6/834   (6068 words)

 Homeostatic Computing
He said that the processes inside the cell have multiple homeostatic features, so that you can purturb the system in many different ways and the elements will come back to "normal" computation.
In the "system design" of the body is a control mechanism to take misbehaving units offline (I didn't know that, so thanks for the instruction.) That isn't a bad idea, but it may not provide the basis for homeostatic computing (although it does seem to match the server farm architecture pretty well).
My question for homeostatic computing is to enquire about the internals of a cell, where to my limited knowledge there seems to be a lot less "system design" present.
c2.com /cgi/wiki?HomeostaticComputing   (1363 words)

 Homeostatic T Cell Proliferation: How Far Can T Cells Be Activated to Self-Ligands? -- Surh and Sprent 192 (4): 9 -- ...
not undergo homeostatic proliferation (21) (22) (24) (25) (26)
cells, homeostatic proliferation of memory cells is not suppressed
Kieper, W.C., and Jameson, S.C. Homeostatic expansion and phenotypic conversion of naive T cells in response to self peptide/MHC ligands.
www.jem.org /cgi/content/full/192/4/F9   (3745 words)

 Control of homeostatic proliferation by regulatory T cells -- Shen et al. 115 (12): 3517 -- Journal of Clinical ...
The mere presence of memory T cells is not sufficient to prevent homeostatic proliferation of naive T cells bearing a different TCR specificity.
We observed that the homeostatic proliferation of OVA/R
Homeostatic proliferation is a barrier to transplantation tolerance.
www.jci.org /cgi/content/full/115/12/3517   (6368 words)

 Homeostatic regulation of sleep in arrhythmic Siberian hamsters -- Larkin et al. 287 (1): R104 -- AJP - Regulatory, ...
Homeostatic regulation of sleep in arrhythmic Siberian hamsters -- Larkin et al.
the homeostatic regulation of sleep (17, 34, 48, 50).
Contribution of the circadian pacemaker and the sleep homeostat to sleep propensity, sleep structure, electroencephalographic slow waves, and sleep spindle activity in humans.
ajpregu.physiology.org /cgi/content/full/287/1/R104   (5580 words)

 T cell homeostatic proliferation elicits effective antitumor autoimmunity -- Dummer et al. 110 (2): 185 -- Journal of ...
Homeostatic proliferation must occur in the regional LNs to induce the antitumor effect.
Effect of homeostatic T cell expansion on established melanoma tumors.
Effect of homeostatic T cell expansion on growth of a colon carcinoma cell line.
www.jci.org /cgi/content/full/110/2/185   (5248 words)

 Redox-regulated Turnover of Nrf2 Is Determined by at Least Two Separate Protein Domains, the Redox-sensitive Neh2 ...
Each graph depicts the natural logarithm of the relative expression of V5-tagged protein as a function of CHX chase time in both homeostatic and stressed COS1 cells (mean of between two to four independent experiments).
In homeostatic COS1 cells, however, the half-life of mNrf2-V5 was only 24 min (Fig.
This is the most efficient mechanism for removing Nrf2, but only occurs in homeostatic cells as oxidative stress antagonizes the Nrf2-Keap1 interaction.
www.jbc.org /cgi/content/full/279/30/31556   (8152 words)

 Biaxial incremental homeostatic elastic moduli of coronary artery: two-layer model -- Lu et al. 287 (4): H1663 -- AJP - ...
Biaxial incremental homeostatic elastic moduli of coronary artery: two-layer model -- Lu et al.
homeostatic level of stress and strain at in vivo physiological
in the layers of the coronary artery under homeostatic conditions.
ajpheart.physiology.org /cgi/content/full/287/4/H1663   (3948 words)

 A1 Receptor and Adenosinergic Homeostatic Regulation of Sleep-Wakefulness: Effects of Antisense to the A1 Receptor in ...
A1 Receptor and Adenosinergic Homeostatic Regulation of Sleep-Wakefulness: Effects of Antisense to the A1 Receptor in the Cholinergic Basal Forebrain -- Thakkar et al.
receptor in the BF was a mediator of homeostatic
are the key components in the homeostatic regulation of sleep-wakefulness.
www.jneurosci.org /cgi/content/full/23/10/4278   (6430 words)

 Garden of Life | Products for Life | Digestive Health | Primal Defense
The HSOs in Primal Defense are important probiotics you would get in abundance if your food came from soil untouched by pesticides, herbicides and other widely used chemicals.
Garden of Life believes that probiotics are most beneficial when they are not separated from their food source.
In order to obtain the benefits we historically acquired from consuming foods cultivated in healthy soil, Garden of Life developed a Homeostatic Soil Organism Probiotic Blend utilizing 12 species of beneficial microorganisms.
www.gardenoflife.com /detail_primal_defense.shtml   (766 words)

 homeostatic - OneLook Dictionary Search
We found 10 dictionaries with English definitions that include the word homeostatic:
Tip: Click on the first link on a line below to go directly to a page where "homeostatic" is defined.
Phrases that include homeostatic: homeostatic equilibrium, homeostatic lag, homeostatic control system, homeostatic model assessment
www.onelook.com /?w=homeostatic   (117 words)

 Systemic immunoregulatory and pathogenic functions of homeostatic chemokine receptors -- Müller et al. 72 (1): 1 ...
Systemic immunoregulatory and pathogenic functions of homeostatic chemokine receptors -- Müller et al.
Aside from the homeostatic recirculation of lymphocytes and
Homeostatic chemokines drive migration of malignant B cells in patients with non-Hodgkin lymphomas
www.jleukbio.org /cgi/content/full/72/1/1   (5836 words)

 Homeostatic-like plasticity of the primary motor hand area is impaired in focal hand dystonia -- Quartarone et al. 128 ...
is that homeostatic mechanisms that keep cortical excitability
probe regional homeostatic plasticity of the left M1.
a faulty homeostatic response to acute increases in corticospinal
brain.oxfordjournals.org /cgi/content/abstract/128/8/1943   (489 words)

 pH of the Blood - 3 - Control mechanisms - M J Bookallil
The approach used in this book is consistent with their hypotheses, i.e.
that variation of acid secretion by the kidney occurs in a direction which would appear to be appropriate for pH homeostasis only if this is consistent with other homeostatic mechanisms, i.e.
They think, and I agree, that pH control has a low priority in homeostatic mechanisms.
www.usyd.edu.au /su/anaes/lectures/acidbase_mjb/control.html   (3262 words)

 Digestive Probiotics 900mg - Oral Capsule Probiotic Capsules Homeostatic Soil Organisms   (Site not responding. Last check: 2007-09-18)
Primal Defense is a natural whole food probiotic blend of Homeostatic Soil Organisms (HSO) designed to optimize the health of the human digestive tract and immune system.
It is a complete food that includes all the nutrients that were once in our diets, derived from beneficial soil bacteria and plant lipids called sterols/sterolins, present in pure plant life.
These products are not intended to diagnose, treat, cure, or prevent any disease
www.health-marketplace.com /Primal-Defense.htm   (797 words)

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