It is accepted that colostral macrophages have protective effects on gastrointestinal tract of the neonates. Macrophages act as a major defensive cells in colostrum and serve as a main source of colostral prostaglandins which are known to exert cytoprotection for gastrointestinal tract of neonates against infectious agents and drugs such as aspirin. This study was conducted to evaluate the total cell numbers and differential counts for macrophages, neutrophils and lymphocytes in colostrum of Korean mothers. To compare the level of PGE2, 6-keto-PGF1$\alpha$, and TXB2 between colostrum and serum of postpartum mothers, radioimmunoassay adopting eicosanoids-antibody complex method was applied instead of charcoal method. The results were as follows : 1) Total defensive cell count was 7.6$\pm$2,37$\times$106 cells/ml, differential counts of macrophages, neutrophils and lymphocytes were 57.49$\pm$4.14%, 37.98$\pm$4.43% and 4.29$\pm$0.73% respectively. 2) The order of prostaglandin level in colostrum which are known to enhance development and cytoprotection of gastrointestinal tract, was 6-keto-PGF1$\alpha$, TXB2 and PGE2. Colostral PGE2 level was 584.6$\pm$72.3 pg/ml, higher than that of serum(p<0.01). 6-keto-PGF1$\alpha$, the most abundant prostaglandin in colostrum was higher than in serum level, too (p<0.01). Serum TXB2 level of postpartum mothers(n=42) was higher nine times than that of colostrum(p<0.01), which seems to cause vasoconstriction of uterus in postpartum period. 3) In preterm mothers, serum level of TXB2 level in both groups.
Journal of the Korean Applied Science and Technology
/
v.13
no.3
/
pp.15-24
/
1996
Essentiality was proposed in the field of lipid by Burr and Burr in 1929. When rats were raised on the fat-free diet, their growth retarded and their skin and tails showed the characteristic deficient symptoms, which were relieved by the addition of ${\omega}6(n-6)$ polyunsaturated fatty acids as linoleic(LA) and arachidonic(AA) acids to the basal diet. LA is dehydrogenated to ${\gamma}-linolenic$ acid(GLNA) by ${\Delta}6$ desaturase, then GLNA is 2 carbon chain elongated by elongase to $dihomo-{\gamma}-linolenic$ acid(DGLNA), which is desaturated by ${\Delta}5$ desaturase to AA. These acids are called LA family or ${\omega}6(n-6)$ polyunsaturated fatty acids(PUFA). ${\alpha}-Linolenic$ acid(ALNA) is converted through the series of desaturation and elongation steps to docosahexaenic acid(DHA) via eicosapentaenoic acid(EPA). These acids belong to ALNA family or ${\omega}3(n-3)$PUFA. Human who consume large amounts of EPA and DHA, which are present in fatty fish and fish oils, have increased levels of these two fatty acids in their plasma and tissue lipids at the expense of LA and AA. Alternately, vegetarians, whose intake of LA in high, have more elevated levels of LA and AA and lower levels of EPA and DHA in plasma lipids and in cell membranes than omnivores. AA and EPA are metabolized to substances called eicosanoids. Those derived form AA are known as prostanocids(prostaglandins and prostacyclins) of the 2-types and leukotrienes of the 4-series, whereas those derived from EPA are known as prostanoids of the 3-types and leukotrienes of the 5-series. DGLNA is a precursor of the 1-types of prostaglandins. The metabolites of AA and EPA have competitive functions. Ingestion of EPA from fish or fish oil replaces AA from membrane phospholipids in practically all cells. So this leads to a more physiological state characterized by the production of proatanoids and leukotrienes that have antithrombic, antichemotactic, antivasoconstrictive and antiinflammatory properties. It is evident that ${\omega}3$ fatty acids can affect a number of chronic diseases through eicosanoids alone.
The effects of eicosapentaenoic (EPA, 20:5n-3) and docosahexaenoic acids (DHA, 22:6n-3) on the phospholipase $A_2$ ($PLA_2$)-mediated release of arachidonic acid (AA, 20:4n-6) were studied in kidney microsomes from rats fed diets containing sunflower oil (SO) or fish oil (FO) concentrate for 11 months. The amounts of AA released by the endogenous $PLA_2$ enzyme were significantly lower by 38% in the FO, compared to the SO-fed rats (23.2 nmol versus 60.7 nmol AA released/mg protein/h in the FO- and SO-treated groups, respectively). The FO-derived microsomes released less linoleic acid (LA, 18:2n-6) and adrenic acid (22:4n-6), but larger amounts of the n-3 fatty acids, including EPA, DHA, docosapentaenoic acid (DPA, 22:5n-3), and 20:4n-3 than the SO-derived microsomes. A similar replacement of the AA and adrenic acid with the n-3 fatty acids including EPA and DHA was also observed in the microsomal phospholipid fraction from the FO-fed rats relative to the SO-treated group. The results suggest that the $PLA_2$-mediated release of AA is reduced and that of EPA is increased in compensation for AA decline in kidney microsomes from FO-fed rats (0.7 nmol EPA/mg protein/h versus 22.7 nmol EPA/mg protein/h for the SO and FO-treated groups). Replacement of the n-6 with n-3 fatty acids may explain the reduced synthesis of the AA-derived prostaglandins and the concomitant rise in the EPA-derived prostaglandins observed in kidneys of FO-treated rats.
Perhaps the most common type of reproductive dysfunction in captive fish is failure of females to undergo final oocyte maturation and thus to ovulate and spawn. The success of aquaculture could therefore be improved by developing techniques to enhance natural spawning, artificial maturation, and/or to induce ovulation in farmed fish. This study aimed to investigate the effects of prostaglandin $E_2$ ($PGE_2$) and prostaglandin $F_{2{\alpha}}$ ($PGF_{2{\alpha}}$) on in vitro oocyte maturation (germinal vesicle breakdown, GVBD) and ovulation in the marine fish Chasmichthys dolichognathus. Post-vitellogenic follicles (0.80-0.94 mm diameter oocytes) were incubated with $PGE_2$ or $PGF_{2{\alpha}}$ at concentrations of 5, 50, or 500 ng/mL for 24 hours. A significant increase in GVBD was seen in 0.84 mm and 0.94 mm oocytes incubated with 50 ng/mL $PGE_2$ compared with the control. There was no significant increase in GVBD in any of the other experimental conditions (5 or 500 ng/mL $PGE_2$ or 5, 50, or 500 ng/mL $PGF_{2{\alpha}}$). Neither of the prostaglandins induced ovulation at the concentrations tested.These results suggest that GVBD was induced by incubation with 50 ng/mL $PGE_2$.
Lipid metabolites involved in cellular regulation as signaling mediators. Prostaglandins (PGs), metabolites of lipid are involved to pregnancy at the time of implantation but the functional roles of PGs on embryo development are still controversy and largely unknown. In previous report, the levels of $PGE_2$ and $PGF_{2a}$ at embryos of morula stage and blastocyst stage were explored (Cheon et al., 1998). In this study, the previous suggestion was confirmed and the possible downstream mediator of prostaglandin $E_2$ and prostaglandin $F_{2a}$ on the expansion and hatching of mouse embryo was examined. As expected, developmental rate of the blastocyst to expanded stage was a concentration-response curve that showed the highest expansion rate at 10 ${\mu}M$$PGE_2$, but at 100 ${\mu}M$$PGE_2$, the rate was decreased. In contrast to the $PGE_2$, $PGF_{2a}$ stimulated expansion without toxicity at highest concentration. Cotreatment of PGs with indomethacin overcame the inhibitory effects of indomethacin in expansion. Exogenous PGs also improved the development of expanded embryos to the hatching stage. Besides, PGs receptors' transcripts detected at blastocyst. $PGE_2$ was caused of calcium fluctuation in the blastocyst but $PGF_{2a}$ did not. The changes of intracellular calcium concentration were different between indomethacin pretreated embryos and non-treated embryos. Based on these results it is suggested that PGs work as paracrine and/or autocrine factors through calcium and the others which were not identified in this study.
Objective: This study was carried out to investigate the effects of Gami-Shengmayuipung-tang on acne. Methods : The effects of Gami-Shengmayuipung-tang (SYTSRG) on acne were measured by the $5\alpha-reductase$ inhibition, the sterilizing power for Propionibactrium acnes, the cytotoxicity of human monocyte, the inhibition for prostaglandins$(PGE_2)$, interleukins $(IL-l\beta)$ and $TNF-\alpha$ in inflammation, and the size of the hamtster ear sebaceous gland related to P. acnes. Results: On the $5\alpha-reductase$ inhibition of SYTSRG in vitro, an undiluted solution of SYTSRG showed $80\%$ inhibition on $5\alpha-reductase$ and 1/10 diluted solution of SYTSRG showed $40\%$ inhibition on $5\alpha-reductase$. On the sterilizing power for Propionibactrium acnes related acne, an undiluted solution and 1/10 diluted solution of SYTSRG formed $12\beta{\AE}$ clear zone diameters. SYTSRG did not show cytotoxicity of human monocyte. Concentrations of $0.01\%\;and\;0.04\%\;and\;0.08\%$ of SYTSRG inhibited the production of prostaglandins $(PGE_2)$ in the human monocyte stimulated with P. acnes LPS. $0.08\%$ and less of SYTSRG inhibited the production of interleukins $(IL-l\beta)$ in the human monocyte stimulated with P. acnes LPS. Concentrations of $0.04\%,\;0.08\%\;and\;0.12\%$ of SYTSRG inhibited the production of $TNF-\alpha$ in the human monocyte stimulated with P. acnes LPS. As the antiandrogenic compound, SYTSRG was used in hamster ears with topical application. SYTSRG diminished the size of the hamster ear sebaceous gland in males, but not in females. Conclusion: The present data suggest that SYTSRG may affect the primary stage of inflammation of acne.
Achyranthis Bidentatae Radix(ABR) is important prescriptions that have been used in oriental medicine for stomatitis and wound healing. The study was done to evaluate the inhibitory effects of cytotoxicity, formation of superoxide on the macrophage and neutrophil, prostaglandins($PGE_2$), interleukins($IL-1{\beta}$), collagenase activity and synthesis of collagen and DNA. The results were obtained as follows: 1. ABR was not showed the proliferation difference of human fibroblast and monocyte in 0.01% and 0.001% concentrations to be experimented and in result, it was concluded that they have no cytotoxicity but showed cytotoxicity in 0.1% concentrations. 2. ABR inhibited the formation of superoxide to 48% at the concentration of 0.001% in the mouse monocyte. 3. ABR inhibited the formation of superoxide to 40% at 0.001%, 58% at 0.0001% as compared with control in the human monocyte. 4. ABR inhibited the formation of superoxide to 58% at 0.0001%, 40% at 0.001% in the human neutrophil. 5. ABR was not showed the proliferation difference of human monocyte in all concentrations to be experimented and in result, it was concluded that they inhibited the formation of prostaglandins($PGE_2$) in the human monocyte stimulated with E. coli. 6. ABR showed the all concentration of inhibiting the production of inter1eukins($IL-1{\beta}$) in the human monocyte stimulated with E. coli. 7. ABR didn't influence on collagen synthesis and total protein in fibroblasts. 8. ABR inhibited the collagenase activity to 84% at 0.1%, 69% at 0.2%, 76% at 0.5%, 91% at 0.001% respectively.
Ulmus parvifolia(UP) is important prescriptions that have been used in oriental medicine for stomatitis and wound healing. The study was done to evaluate the inhibitory effects of cytotoxicity, formation of superoxide on the macrophage and neutrophil, prostaglandins($PGE_2$), interleukins($IL-1{\beta}$), collagenase activity and synthesis of collagen and DNA. The results were obtained as follows: 1. UP was not showed the proliferation difference of human fibroblast and monocyte in all concentrations to be experimented and in result, it was concluded that they have no cytotoxicity. 2. UP inhibited the formation of superoxide to 22% at 0.01%, 52% at 0.001% in the mouse monocyte. 3. UP inhibited the formation of superoxide to 6% at the concentration of 0.001% as compared with control in the human monocyte. 4. UP was not showed the proliferation difference of human neutrophil in all concentrations to be experimented and in result, it was concluded that they inhibited the formation of superoxide. 5. UP was not showed the proliferation difference of human monocyte in all concentrations to be experimented and in result, it was concluded that they inhibited the formation of prostaglandins($PGE_2$) in the human monocyte stimulated with E. coli. 6. UP was showed the all concentration of inhibiting the production of interleukins($IL-1{\beta}$) to slight in the human monocyte stimulated with E. coli. 7. UP influence on collagen synthesis and total protein in fibroblasts to at the slight of 0.05%, specially to excellent to 0.2%. 8. UP inhibited the collagenase activity to 20% at 0.1%, 31% at 0.2%, 45% at 0.5%, 24% at 0.01% respectively.
This study was conducted to determine expression of acyl-CoA synthetase 4(ACS4), which is involved in converts arachidonic acid to postaglandins, in the mouse uterus during pregnancy. In arachidonic acid metabolism, acyl-CoA synthetase plays a key role in the esterification of free arachidonic acid into membrane phospholipids. Following its release by the action of calcium dependent phospholipases, free arachidonic acid is believed to be rapidly converted to arachidonoyl-CoA and reesterified into phospholipids in order to prevent excessive synthesis of prostaglandins. Here we demonstrate that ACS4 gene are differentially regulated in the peri-implatation mouse uterus. During the preimplantation period(days 0.5∼3.5), the ACS4 gene was expressed in the uterus until day 3.5 after which the expression was downregulated. The expression of cPLA2, COX1, and COX2 gene was similar to that of ACS4 gene in the preimplantation periods. However expression levels of COX1 gene show much variation on the various days of pregnancy examined. These data, suggest that ACS4 expression in preimplantation period is involved in initial attachment reaction with cPLA2, COX1, and COX2 gene.
The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
/
v.12
no.1
/
pp.47-78
/
1999
Hoichunyonggyuksan(HCYGS) and Yongseksan(YSS) are important prescriptions that have been used in oriental medicine for stomatitis and wound healing. The study was done to evaluate the inhibitory effects of cytotoxicity, formation of superoxide on the macrophage and neutrophil, prostaglandins($PGE_2$), interleukins($IL-1{\Beta}$), collagenase activity and synthesis of collagen and DNA. The results were obtained as fo1lows: 1. HCYGS and YSS were not showed the proliferation difference of human fibroblast and monocyte in all concentrations to be experimented and in result, it was concluded that they have no cytotoxicity. 2. YSS inhibited the formation of superoxide to $48\% at the concentration of $0.001\%$ in the mouse monocyte. 3. HCYGS inhibited the formation of superoxide to $13\%$ at the concentration of $0.001\%$ as compared with control in the human monocyte. 4. HCYGS and YSS inhibited the formation of superoxide to $25\%\;and\;35\%$ respectively at the concentration of $0.0001\%\;and\;HCYGS\;showed\;38\%$ inhihitory rate on the formation of superoxide at concentration of $0.001\%$ in the human neutrophil. 5. The concentration of inhibiting the production of prostaglandins($PGE_2$) to $11\%$ in the human monocyte stimulated with E. coli were $0.01\%$ of HCYGS. 6. The concentration of inhibiting the production of interleukins($IL-l{\Beta}$) to $43\%\;and\;39\%$ in the human monocyte stimulated with E. coli were $0.01\%$ of HCYGS and YSS. 7. HCYGS and YSS didn't influence on collagen synthesis and total protein in fibroblasts. 8. HCYGS and YSS inhibited the collagenase activity to $22\%\;and\;19\%\;at\;0.1\%,\;45\%\;and\;56\%\;at\;0.2\%,\;57\%\;and\;52\%$ at $0.5\%$ respectively, but YSS exerted the inhibitory effect on collagenase activity to $27\%$ at the lower concentration of $0.01\%$. 9. HCYGS and YSS didn't show the faster recovary than control group hut exerted the consistant effect on the anti-inflammations and the formation of granulation tissue.
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