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Fatty acids resources:

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Inflamm Res. 2002 Aug;51(8):409-15.
Enhanced macrophage responsiveness to lipopolysaccharide and CD40 stimulation in a murine model of inflammatory bowel disease: IL-10-deficient mice.

Takakura R, Kiyohara T, Murayama Y, Miyazaki Y, Miyoshi Y, Shinomura Y, Matsuzawa Y.

Department of Internal Medicine and Molecular Science, Graduate School of Medicine, Osaka University, Suita, Japan.

OBJECTIVE: To elucidate the role of macrophages in the pathogenesis of inflammatory bowel disease, proinflammatory characteristics of macrophages were estimated in a murine model of spontaneous intestinal inflammation. MATERIALS AND METHODS: Peritoneal macrophages from IL-10deficient mice were stimulated with lipopolysaccharide (LPS) or an anti-CD40 monoclonal antibody (mAb). Cytokine release was assessed by enzyme-linked immunosorbent assay. CD40 expression was examined by two-color flow cytometric analysis. Induction of suppressor of cytokine signaling 3 (SOCS3) mRNA was evaluated by real-time quantitative RT-PCR. RESULTS: In the presence of LPS or anti-CD40 mAb, TNF-alpha and IL-12p70 release from macrophages of mutant mice was significantly higher than that from macrophages of wild-type mice. This may be due to the difference in IL-10 production by macrophages, since activated macrophages of wild-type mice produced IL-10 in amounts sufficient to suppress an increased release of cytokines from activated macrophages of mutant mice. LPS and CD40 stimulation induced significantly high level of SOCS3 expression in macrophages of mutant mice in comparison to those of wild-type mice. CONCLUSIONS: Macrophages from a murine model of inflammatory bowel disease demonstrated enhanced responsiveness to immunological and bacterial stimuli. This suggests significant roles of macrophages in the pathogenesis of inflammatory bowel disease.


online pharmacy ref. source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=12234058&dopt=Abstract [PubMed - in process]



Biochem Cell Biol. 2002;80(4):475-82.
Expression of prolactin receptors and regulation of cell proliferation by prolactin, corticotropin-releasing factor, and corticosterone in a neuroblastoma cell line.

Mohammad YN, Perone M, Wang L, Ingleton PM, Castro MG, Lovejoy DA.

School of Biological Sciences, University of Manchester, UK.

The aetiology of neuroblastoma remains obscure, although a number of neuropeptides have been implicated in its pathogenesis. Using the mouse neuroblastoma cell line Neuro2a as a model, we have investigated the mitogenic actions of prolactin (PRL) and two hypothalamo-pituitary-adrenal stress axis hormones, corticotropin-releasing factor (CRF) and corticosterone. Using established polyclonal PRL receptor antisera with immunofluorescence cytochemistry, we show that the Neuro2a cells possess immunoreactive forms of both the long and short forms of the receptor. PRL and CRF were effective as mitogens in Neuro2a cell cultures, where a 10(-7) M concentration of PRL or CRF elicited a two-fold increase in the numbers of cells after 72 h (p < 0.0001). Corticosterone, however, attenuated their proliferation. These data suggest that prolactin may act to increase the proliferation and regulation of neuroblastomas and that the effects of PRL may be modified by hypothalamo-pituitary-adrenal hormones.


online pharmacy ref. source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=12234101&dopt=Abstract



Biochemistry. 2002 Sep 24;41(38):11338-43.
Protofibrillar islet amyloid polypeptide permeabilizes synthetic vesicles by a pore-like mechanism that may be relevant to type II diabetes.

Anguiano M, Nowak RJ, Lansbury PT Jr.

Center for Neurologic Diseases, Brigham and Women's Hospital, and Department of Neurology, Harvard Medical School, 65 Landsdowne Street, Cambridge, Massachusetts 02139, USA.

Islet amyloid polypeptide (IAPP) and insulin are copackaged and cosecreted by pancreatic islet beta-cells. Non-insulin-dependent (type II) diabetes mellitus (NIDDM) is characterized by dysfunction and depletion of these beta-cells and also, in more than 90% of patients, amyloid plaques containing fibrillar IAPP. An aggregated but not necessarily fibrillar form of IAPP is toxic in cell culture, suggesting that prefibrillar oligomeric (protofibrillar) IAPP may be pathogenic. We report here that IAPP generates oligomeric species in vitro that are consumed as beta-sheet-rich fibrils grow. Protofibrillar IAPP, like protofibrillar alpha-synuclein, which is implicated in Parkinson's disease pathogenesis, permeabilizes synthetic vesicles by a pore-like mechanism. The formation of the IAPP amyloid pore is temporally correlated to the formation of early IAPP oligomers and its disappearance to the appearance of amyloid fibrils. Neither pores nor oligomers were formed by the nonfibrillogenic rat IAPP variant. The IAPP amyloid pore may be critical to the pathogenic mechanism of NIDDM, as other amyloid pores may be to Alzheimer's disease and Parkinson's disease.


online pharmacy ref. source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=12234175&dopt=Abstract



Biochemistry. 2002 Sep 24;41(38):11425-37.
Solution structure and phosphopeptide binding to the N-terminal domain of Yersinia YopH: comparison with a crystal structure.

Khandelwal P, Keliikuli K, Smith CL, Saper MA, Zuiderweg ER.

Biophysics Research Division, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109-1055, USA.

Virulence of pathogenic bacteria of the genus Yersinia requires the injection of six effector proteins into the cytoplasm of host cells. The amino-terminal domain of one of these effectors, the tyrosine phosphatase YopH, is essential for translocation of YopH, as well as for targeting it to phosphotyrosine-containing substrates of the type pYxxP. We report the high-resolution solution structure of the N-terminal domain (residues 1-129) from the Yersinia pseudotuberculosis YopH (YopH-NT) in complex with N-acetyl-DEpYDDPF-NH(2), a peptide derived from an in vivo protein substrate. In contrast to the domain-swapped dimer observed in a crystal structure of the same protein (Smith, C. L., Khandelwal, P., Keliikuli, K., Zuiderweg, E. R. P., and Saper, M. A. (2001) Mol. Microbiol. 42, 967-979), YopH-NT is monomeric in solution. The peptide binding site is located on a beta-hairpin that becomes the crossover point in the dimer structure. The binding site has several characteristics that are reminiscent of SH2 domains, which also bind to pYxxP sequences.


online pharmacy ref. source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=12234185&dopt=Abstract



Kidney Int. 2003 Jan;63(1):24-32.
A novel mutation in the chloride channel gene, CLCNKB, as a cause of Gitelman and Bartter syndromes.

Zelikovic I, Szargel R, Hawash A, Labay V, Hatib I, Cohen N, Nakhoul F.

Department of Nephrology, Rambam Medical Center, Faculty of Medicine, Technion - Israel Institute of Technology, Haifa, Israel. i_zelikoviambam.health.gov.il

BACKGROUND: Gitelman syndrome (GS) and Bartter syndrome (BS) are hereditary hypokalemic tubulopathies with distinct phenotypic features. GS has been considered a genetically homogeneous disorder caused by mutation in the gene encoding the NaCl cotransporter (TSC) of the distal convoluted tubule. In contrast, BS is caused by mutations in the genes encoding either the Na-K-2Cl cotransporter (NKCC2), the K+ channel (ROMK) or the Cl- channel (ClC-Kb) of the thick ascending limb. The purpose of this study was to examine the clinical, biochemical and genetic characteristics of a very large inbred Bedouin kindred in Northern Israel with hereditary hypokalemic tubulopathy. METHODS: Twelve family members affected with hypokalemic tubulopathy, as well as 26 close relatives were clinically and biochemically evaluated. All study participants underwent genetic linkage analysis. Mutation analysis was performed in affected individuals. RESULTS: Evaluation of affected family members (age range 3 to 36 years) revealed phenotypic features of both GS and classic Bartter syndrome (CBS). Features typical of GS included late age of presentation (>15 years) in 7 patients (58%), normal growth in 9 (75%), hypomagnesemia (SMg <0.7mmol/L) in 5 (42%), hypermagnesiuria (FEMg>5%) in 6 (50%) and hypocalciuria (urinary calcium/creatinine mmol/mmol <0.15) in 5 (42%). Features typical of CBS included early age of presentation (<1 year) in 3 (25%), polyuria/dehydration in 4 (33%), growth retardation in 3 (25%), hypercalciuria (urinary calcium/creatinine mmol/mmoverline>0.55) in 4 (33%) and nephrolithiasis in 1 (8%). Linkage analysis in affected patients excluded the TSC gene, SLC12A3, as the mutated gene, but demonstrated linkage to the Cl- channel gene, CLCNKB, on chromosome 1p36. Mutation analysis by direct sequencing revealed a novel homozygous missense mutation, arginine 438 to histidine (R438H), in exon 13 of CLCNKB in all patients. A restriction fragment length polymorphism (RFLP) analysis has been developed to aid in genotyping of family members. CONCLUSIONS: Our findings demonstrate intrafamilial heterogeneity, namely the presence of GS and CBS phenotypes, in a kindred with the CLCNKB R438H mutation. We conclude that GS can be caused by a mutation in a gene other than SLC12A3. The exact role of the CLCNKB R438H mutation in the pathogenesis of the electrolyte and mineral abnormalities in GS and CBS remains to be established.


online pharmacy ref. source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=12472765&dopt=Abstract [PubMed - in process]







Natural Herbal Supplement: Hair Million


Hair loss alone does not pose significant health problems. In fact, there are people who opt for baldness as an alternative hair style. However, in general, however, hair loss is not considered desirable.

The most ostensive feature that distinguishes us human from chimps and other primates is the lack of bodily hair. During evolutionary process, we have lost the majority of hair. Hair is no longer a biologically essential part of our body, just like appendix. The hair we still have on our scalp and a few other bodily parts is still regarded as significant for reasons other than biological necessity. Hair loss is naturally accompanied by aging process, although the extent of hair loss and the timing of onset vary widely among individuals. Thus, loss of hair and baldness is considered as a symbol of maturity or old age. Like winkles and other signs of aging, hair loss is not welcome by most people, because we don't welcome aging, and being perceived as an aging person. However, it is alopecia, or premature hair loss that especially concerns certain people.

While the hair loss and resulting baldness in general have not been proven to be related to underlying health problems, there are certain correlations between hair loss and health problems. For instance, premature hair loss could suggest premature aging or nutritional and hormonal imbalance, stressful life, use of drugs that cause hair loss as a side effect, skin disease, or heart disease. The balding appearance could also impart a subdued impression of integrity in bodily health and youthfulness.












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