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Ok....I did a little more research. Here tis:
Here’s a little of what I found regarding histamine that I personally would suggest that MSers should be mindful of before supplementing their system with histamine.
Miscellaneous tidbits:
Histamine does not raise BDNF (which is something we do want to do in MS).
Histamine (too much production) is mainly connected with reactions of the skin (itching, hives, etc.) and is associated with allergens and allergies.
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Cataplexy-Active Neurons in the Hypothalamus
Implications for the Role of Histamine in Sleep and Waking Behavior
Joshi John1, 2, Ming-Fung Wu2, Lisa N. Boehmer1, 2 and Jerome M. Siegel , 1, 2, 3, ,
1 Department of Psychiatry, University of California, Los Angeles, Los Angeles, CA 90095, USA
2 Neurobiology Research (151A3), Veterans Administration Greater Los Angeles Healthcare System, North Hills, CA 91343, USA
3 Brain Research Institute, University of California, Los Angeles, Los Angeles, CA 90095, USA
Received 7 October 2003; Revised 24 December 2003; accepted 29 March 2004 Published: May 26, 2004 Available online 26 May 2004.
Abstract
Noradrenergic, serotonergic, and histaminergic neurons are continuously active during waking, reduce discharge during NREM sleep, and cease discharge during REM sleep. Cataplexy, a symptom associated with narcolepsy, is a waking state in which muscle tone is lost, as it is in REM sleep, while environmental awareness continues, as in alert waking. In prior work, we reported that, during cataplexy, noradrenergic neurons cease discharge, and serotonergic neurons greatly reduce activity. We now report that, in contrast to these other monoaminergic "REM-off" cell groups, histamine neurons are active in cataplexy at a level similar to or greater than that in quiet waking. We hypothesize that the activity of histamine cells is linked to the maintenance of waking, in contrast to activity in noradrenergic and serotonergic neurons, which is more tightly coupled to the maintenance of muscle tone in waking and its loss in REM sleep and cataplexy.
Corresponding author. Correspondence: Jerome M. Siegel, (818) 891-8612 (phone), (818) 895-9575 (fax)
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COMMENT FROM DEB: Histamine alone is associated with mental alertness and not actually body fatigue. In cataplexy (such as I, and many other MSers, experience), you can feel perfectly “awake”, but you totally lose muscle tone, etc. You feel like you’ve been hit by a mack truck! I refer to it as my whole body is trying to shut down. Hence my former reference to different types of fatigue. If you have histamine related fatigue, you feel “sleepy”, but your body isn’t necessarily giving out on you. If you have fatigue associated with noradrenaline (aka norepinephrine) or serotonin cessation or depletion, your mind is totally awake – you don’t feel “sleepy” – but your body just suddenly won’t work anymore. You are mentally awake just fine (for the most part), but you can’t control your body. You have an overwhelming “fatigue”. So again, I would reiterate my original assumption that before supplementing your system with histamine, that you are very careful that it is a lack of histamine that is causing your fatigue in the first place.
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Pathol Int. 2004 Jul;54(7):465-74. Related Articles, Links
Acute inflammatory reactions caused by histamine via
monocytes/macrophages chronically participate in the initiation and progression of atherosclerosis.
Kimura S, Wang KY, Tanimoto A, Murata Y, Nakashima Y, Sasaguri Y.
Department of Pathology and Cell Biology, University of Occupational and Environmental Health, School of Medicine, Kitakyushu, Japan.
Previously we demonstrated that histidine decarboxylase (HDC), which produces histamine from l-histidine, was detected in monocytes/macrophages located in human atherosclerotic lesions. As monocytic migration is a key event of atherogenesis, we investigated whether histamine induces monocytic expression of monocyte chemoattractant protein (MCP)-1 and its receptors CCR2-A and -B, and also endothelial expression of ICAM-1 and VCAM-1. Furthermore, we studied the effect of interleukin (IL)-4, which inhibits the HDC expression, on the expression of MCP-1 and CCR2. Histamine stimulated monocytes, but not macrophages, to express MCP-1 and CCR2-A and -B. The expression of MCP-1 was inhibited by histamine H2 blocker. In contrast, IL-4 enhanced CCR2 expression but not MCP-1. Histamine stimulated endothelial cells to express ICAM-1 and VCAM-1. These results indicate that histamine and IL-4, which are both synthesized in the arterial intima, chronically participates in the pathogenesis of atherosclerosis via the enhanced expression of monocytic MCP-1, CCR2 and endothelial adhesion molecules.
PMID: 15189499 [PubMed - in process]
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COMMENT FROM DEB: That above is just another “caution” regarding supplementation of histamine, in addition to surprisingly providing further credence to my previous theories that if anything, you want to decrease IL-4, not increase it. The goal of Antegren in helping MS is the fact that it inhibits VCAM-1. Histamine tends to INCREASE VCAM-1, which is definitely something we might want to reconsider doing.
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Neurosci Lett. 2004 May 6;361(1-3):159-62. Related Articles, Links
Histamine-induced Ca(2+) influx via the PLA(2)/lipoxygenase/TRPV1 pathway in rat sensory neurons.
Kim BM, Lee SH, Shim WS, Oh U.
Sensory Research Center, National Creative Research Initiatives, College of Pharmacy, Seoul National University, San 56-1, Shinlim, Kwanak-Gu, Seoul 151-742, South Korea.
Histamine is known to excite a subset of C-fibers and cause itch sensation. Despite its well-defined excitatory action on sensory neurons, intracellular signaling mechanisms are not understood. Previously, we demonstrated that bradykinin excited sensory neurons by activating TRPV1 via the phospholipase A(2) (PLA(2)) and lipoxygenase (LO) pathway. We, thus, hypothesized that histamine excited sensory neurons via the PLA(2)/LO/TRPV1 pathway. Application of histamine elicited a rapid increase in intracellular Ca(2+) ([Ca(2+)](i)) that desensitized slowly in cultured dorsal root ganglion neurons. Histamine-induced [Ca(2+)](i) was dependent on extracellular Ca(2+) and inhibited by capsazepine and by SC0030, competitive antagonists of TRPV1. Quinacrine and nordihydroguaiaretic acid, a PLA(2) and an LO inhibitor, respectively, blocked the histamine-induced Ca(2+) influx in sensory neurons, while indomethacin (a cyclooxygenase inhibitor) did not. We thus conclude that histamine activates TRPV1 after stimulating the PLA(2)/LO pathway, leading to the excitation of sensory neurons. These results further provide an idea for potential use of TRPV1 antagonists as anti-itch drugs.
PMID: 15135918 [PubMed - in process]
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COMMENT FROM DEB: Now, the above is where we could possibly run into some problems if you are suffering with progressive MS or axonal degeneration and you increase histamine in your system. Histamine will INCREASE cellular calcium influx (not to mention its affects on PLA2), which may prove itself to be detrimental in progressive MS (via possibly promoting axon degeneration). (As I have referred to previously in my other research.)
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Cytokine. 2004 May 7;26(3):122-30. Related Articles, Links
IL-9 increases the expression of several cytokines in activated mast cells, while the IL-9-induced IL-9 production is inhibited in mast cells of histamine-free transgenic mice.
Wiener Z, Falus A, Toth S.
Department of Genetics, Cell and Immunobiology, Semmelweis University of Medicine, Nagyvarad ter 4, Budapest 1089, Hungary.
Histamine and IL-9 are suspected to play an important role in the pathogenesis of asthmatic and allergic reactions. Mast cells store a large amount of histamine in their granules and are capable of producing different cytokines upon stimulation. In this study we show that mast cells stimulated by IL-9 and ionomycin or IL-9 and antigen-specific IgE/antigen express several cytokines at mRNA level, among them are IL-5, IL-4, IL-10, IL-9, IL-13, IL-1beta, IL-1Ra, IL-6 and MIF. Furthermore, both IL-9 and ionomycin are needed for the production of these cytokines in great quantities, which is mediated through the production of IL-1beta. Histamine-free mast cells respond by a markedly decreased IL-9 expression to this stimulation. Our results show that this IL-9-induced IL-9 production may result in a positive feedback loop in mast cells and the lack of histamine disturbs this loop, which may serve as an explanation for the reduced asthmatic symptoms, observed in histamine-free mice. Copyright 2004 Elsevier Ltd.
PMID: 15135806 [PubMed - in process]
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COMMENT FROM DEB: If you have MS and also suffer from any type of allergies or asthma, extreme caution should be exercised regarding introducing additional histamine into your system. You could trigger a severe asthmatic attack or exacerbate your existing allergies.
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I’m certainly not trying to debunk Prokarin at all. I personally found Elaine’s research to be very thorough.
Actually, I’d have to say that I probably stand by my original post and my comments posted therein. I would personally reiterate that in my opinion, the use of Prokarin in MS would depend on the TYPE of fatigue that you suffer from and the reasons behind it.
To put it simply, just be sure that you don’t suffer from existing allergies or asthma; I would advise using EXTREME caution in taking Prokarin if you are diagnosed with progressive MS; and be certain that you truly are suffering from a lack of histamine in the first place before supplementation with Prokarin.
Other than that, again, I think my original thoughts regarding their research, etc., still holds true in my mind. Their statements that histamine is a receptor that can affect quite a few physiological processes is certainly true. It’s just not very simple in its application in MS.
And I'd say it needs actual clinical trials.
Well, that’s my two cents!
Deb
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