Beta glucans and choices...
Hi; here are a couple more abstracts suggesting that beta glucans really do help mobilize stem cells:
1. Blood. 2006 Jan 15;107(2):835-40. Epub 2005 Sep 22.
Beta-glucan enhances complement-mediated hematopoietic recovery after bone marrow injury.
Cramer DE, Allendorf DJ, Baran JT, Hansen R, Marroquin J, Li B, Ratajczak J, Ratajczak MZ, Yan J.
Tumor Immunobiology Program, James Graham Brown Cancer Center, University of Louisville, 580 South Preston St, Louisville, KY 40202, USA.
Abstract
Myelotoxic injury in the bone marrow (BM) as a consequence of total body irradiation (TBI) or granulocyte colony-stimulating factor (G-CSF) mobilization results in the deposition of iC3b on BM stroma (stroma-iC3b). In the present study, we have examined how stroma-iC3b interacts with hematopoietic progenitor cells (HPCs) and the role of complement (C) and complement receptor 3 (CR3) in BM injury/repair. We demonstrate here that stroma-iC3b tethers HPCs via the inserted (I) domain of HPC complement receptor 3 (CR3, CD11b/CD18, Mac-1). Following irradiation, stroma-iC3b was observed in the presence of purified IgM and normal mouse serum (NMS), but not serum from Rag-2(-/-) mice, implicating a role for antibody (Ab) and the classic pathway of C activation. Furthermore, a novel role for soluble yeast beta-glucan, a ligand for the CR3 lectin-like domain (LLD), in the priming of CR3(+) HPC is suggested. Soluble yeast beta-glucan could enhance the proliferation of tethered HPCs, promote leukocyte recovery following sublethal irradiation, and increase the survival of lethally irradiated animals following allogeneic HPC transplantation in a CR3-dependent manner. Taken together, these observations suggest a novel role for C, CR3, and beta-glucan in the restoration of hematopoiesis following injury.
PMID: 16179370 [PubMed - indexed for MEDLINE]PMCID: PMC1895628Free PMC Article
And:
1. Int Immunopharmacol. 2004 Jan;4(1):91-9.
Maitake beta-glucan MD-fraction enhances bone marrow colony formation and reduces doxorubicin toxicity in vitro.
Lin H, She YH, Cassileth BR, Sirotnak F, Cunningham Rundles S.
Integrative Medicine Service, Memorial Sloan-Kettering Cancer Center, New York, NY, USA.
Abstract
Previous studies have indicated that MD-fraction (MDF), in which the active component is beta 1,6-glucan with beta 1,3-branches, has anti-tumor activity as an oral agent and acts as an immune adjuvant. Since some other beta glucans appear to promote mobilization of hematopoietic stem cells, the effects of a beta glucan extract from the Maitake mushroom "MD-fraction" on hematopoietic stem cells were examined in a colony forming assay. Here we report for the first time that MDF has a dose response effect on mouse bone marrow cells (BMC) hematopoiesis in vitro. Using the Colony Forming Unit (CFU) assay to detect formation of granulocyte-macrophage (CFU-GM) colonies, and the XTT cytotoxicitiy assay to measure BMC viability, the data showed that the addition of MDF significantly enhanced the development of CFU-GM in a dose range of 50-100 microg/ml (p<0.004). The mechanism of action included significant increase of nonadherent BMC viability, which was observed at MDF doses of 12.5-100 microg/ml (p<0.005). In the presence of Doxorubicin (DOX), MDF promoted BMC viability and protected CFU-GM from DOX induced toxicity. In addition, MDF treatment promoted the recovery of CFU-GM colony formation after BMC were pretreated with DOX. These studies provided the first evidence that MDF acts directly in a dose dependent manner on hematopoietic BMC and enhances BMC growth and differentiation into colony forming cells.
PMID: 14975363 [PubMed - indexed for MEDLINE]
So beta-glucans from some sources seem active in helping stem cells. Either Stem-Kine or AOR Immune Support, or a Maitake mushroom or extract ( I think there is one ) should be of some help. If I find something on pomegranate or ellagic acid I will post.
But I want to pursue an issue that arose between myself and mJoeythe question of trust in the seller vs. research into the product as motive for choosing a product. I take his point that one should research for oneself, and not be too put off by questionable selling tactics. I have ordered Steenblocks book, and will read with interest what he has to say about nutritional factors in stem cell mobilization.
That approach, however, works best in a situation where one feels secure competence in understanding and evaluating research for oneself. That is not my case when reading about stem cells, and I suspect that is the case for many of us, though clearly there are members posting in this forum who have a much better understanding of this stuff. I feel that in my situation, trust has to play a role, and since I trust Paul Cheneys judgement in these matters much more than my own, I will stick with his choice until and unless some new discovery changes my mind.
We have to try to navigate between the Big Pharma restrictive views of the FDA, and the potential chaos of an open and unregulated market. I for one need all the help I can find to steer my own path, and so will take account of what I can find out about the seller, as well as investigating as best I can his product.
Best, Chris