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This study was designed to investigate the effects of icariin on bone metabolism in osteoprotic mice induced by iron overload, the model of iron overload mice was established by intraperitoneal injection of iron dextran (100 mg·kg-1). Sixty 2-month-old C57/BL6 male mice were randomly divided into six groups, including normal control group, model group, N-acetyl-L-cysteine (NAC)-treated group, icariin (50, 100 and 200 mg·kg-1)-treated group. Except for the mice in control group, the mice were intraperitoneal injected weekly with iron dextran (100 mg·kg-1) to establish the model of iron overload mice. The NAC and icariin were suspended in 0.5% CMC-Na solution, and administered orally for six times one week according to body weight. The mice in normal group and model group were given the same volume of 0.5% CMC-Na solution. Three months later, the organs, serum and femurs of mice were collected. Serum biochemical parameters were detected with an ELISA kit, the distal femur bone density and trabecular bone microstructure were analyzed by Micro-CT, and the mechanical properties of femur were measured by universal mechanical analyzer. Compared with the normal control group, iron overload decreased the bone mineral density and deteriorated the micro-architecture structure and bone mechanical properties in femur of mice, increased the level of iron, phosphorus and activity of tartrate resistant acid phosphatase-5b (TRACP-5b), reduced the level of osteocalcin (OCN) in serum, decreased the activity of superoxide dismutase (SOD) of liver tissues, increased the content of malondialdehyde (MDA) of liver tissues. Icariin increased bone mineral density, improved the micro-architecture and mechanical properties of bone tissue, reduced the levels of iron and phosphorus, decreased the activity of TRACP-5b and enhanced the levels of OCN in serum, and also decreased the activity of MDA in liver tissue of iron overload mice. These results suggest that icariin is able to reduce bone loss and improve bone microstructure and mechanical properties in iron overload mice through regulation of bone metabolism via anti-oxidation.
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Objective To establish a method for the determination of eight heavy metal elements ofPb,Cd,As,Hg,Co,V,Se,Mo in iron dextran by inductively coupled plasma optical emission spectrometry (ICP-OES).Method Through selection of detection wavelengths,optimization of instrument parameters,correction of spectral interference,verification of ionization interference and investigation of suppression methods,the eight heavy metal elements were analyzed by ICP-OES.Results The recovery rate of the detected elements increased 5％ to 10％ by suppression of ionization interference.The accuracy of the method was good.The spiked recovery rates of the detected elements were from 95.7％ to 101.1％.The precision of the method were good (RSD ＜ 3.6％,n =6).The linearities of the detected elements were good,and the correlation coefficients were all greater than 0.999.The detection limits were from 0.15 to 8.09 ng/mL.The quantization limits were from 0.46 to 24.26 ng/mL.Conclusion The method was accurate,sensitivity,rapid and reliable,which can be applied to the determination of contents of eight heavy metal elements in iron dextran.
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Objective To establish a method for the determination of eight heavy metal elements (Pb,Cd,As,Hg,Co,V,Se,and Mo) in iron dextran by inductively coupled plasma optical emission spectrometry (ICP-OES).Methods Through detection wavelength selection,optimization of instrument parameters and applying interference element correction (IEC) method to correction of spectral interference,the eight heavy metal elements were analyzed by ICP-OES.Results The elements recoveries were from 88.7％ to 101.3％ by correction of spectral interference with IEC method.The accuracy of the method was good.The linearities of the detected elements were good,and the correlation coefficients were all greater than 0.999.The detection limits were from 0.12 to 7.26 ng/rnL.The quantization limits were from 0.40 to 23.96 ng/mL.The precision of the method was good (RSD＜3.5％,n=6).Conclusion The results of the spectral interference correction by IEC method are greatly superior to the results of conventional method.The established method is accurate,sensitive,and rapid,which can be applied to the determination of contents of eight heavy metal elements in iron dextran.
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Objective:To establish a method for the simultaneous determination of 8 heavy metal elements Pb, Cd, As, Hg, Co, V, Se and Mo in iron dextran by inductively coupled plasma optical emission spectrometry ( ICP-OES) . Methods:Through the detec-tion wavelength selection,the detection wavelength was confirmed as follows:220. 353 nm for Pb, 228. 802 nm for Cd, 188. 980 nm for As, 194. 164 nm for Hg, 228. 615 nm for Co, 311. 070 nm for V, 196. 026 nm for Se and 204. 598 nm for Mo. Through optimizing the instrument parameters, the optimal radio frequency power was 1. 3 kW, the nebulizer gas flow rate was 0. 7 L·min-1, and the pump speed was 10 r·min-1. By applying the above detection parameters, the 8 heavy metal elements were analyzed by ICP-OES simultaneously. Results: The linearity of the detected elements was good, and the correlation coefficients were all greater than 0. 9990. The detection limits were from 0. 12 to 7. 26 ng·ml-1 , the quantitation limits were from 0. 40 to 23. 96 ng·ml-1 and the recoveries were from 94. 1% to 103. 4% (RSD<3%, n=9). Conclusion: The method is specific, sensitive, rapid and accurate, which can be applied in the simultaneous determination of 8 heavy metal elements in iron dextran.
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Objective To establish a method for the determination of 8 heavy metal elements of Pb,Cd,As,Hg,Co,V,Se,Mo in iron dextran by inductively coupled plasma optical emission spectrometry (ICP-OES).Method Through selection of detection wavelengths,optimization of instrument parameters,verification of matrix effect interference and investigation of internal standard for correction of matrix effect interference,the 8 heavy metal elements were analyzed by ICP-OES.Results The recovery rate of the detected elements were increased from 83％-90％ to 94％-100％,after correction of matrix effect interference by internal standard method.The accuracy of the method were good.The spiked recoveries of the detected elements were from 94.3％ to 101.5％.The precision of the method were good (RSD ＜ 3.5％,n =6).The linearities of the detected elements were good,and the correlation coefficients were all greater than 0.999.The detection limits were from 0.22 to 8.54 ng/mL.The quantization limits were from 0.68 to 25.73 ng/mL.Conclusion The established method was accurate,sensitivity,rapid and reliable,which can be applied to the determination of contents of 8 heavy metal elements in iron dextran.
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Objective To establish a method for the determination of 8 heavy metal elements of Pb,Cd,As,Hg,Co,V,Se,Mo in iron dextran by inductively coupled plasma optical emission spectrometry (ICP-OES).Method Through selection of detection wavelengths,optimization of instrument parameters,verification of matrix effect interference and investigation of internal standard for correction of matrix effect interference,the 8 heavy metal elements were analyzed by ICP-OES.Results The recovery rate of the detected elements were increased from 83％-90％ to 94％-100％,after correction of matrix effect interference by internal standard method.The accuracy of the method were good.The spiked recoveries of the detected elements were from 94.3％ to 101.5％.The precision of the method were good (RSD ＜ 3.5％,n =6).The linearities of the detected elements were good,and the correlation coefficients were all greater than 0.999.The detection limits were from 0.22 to 8.54 ng/mL.The quantization limits were from 0.68 to 25.73 ng/mL.Conclusion The established method was accurate,sensitivity,rapid and reliable,which can be applied to the determination of contents of 8 heavy metal elements in iron dextran.
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Com o objetivo de avaliar o uso de diferentes fontes de ferro na prevenção da anemia ferropriva e no desempenho em leitões lactentes, dividiram-se 202 leitões em cinco tratamentos: FD - aplicação intramuscular de 200mg de ferro dextrano no terceiro dia de idade; T24 - terra à vontade fornecida aos leitões a cada 24 horas do terceiro ao 19º dia; T48 - terra à vontade fornecida aos leitões a cada 24 horas do terceiro ao 10º dia e do 11º ao 19º dia, com intervalo de 48 horas; T72 - terra à vontade fornecida aos leitões a cada 24 horas do terceiro ao 10º dia e do 11º ao 19º dia, com intervalo de 72 horas; SA - suplemento alimentar ultraprecoce rico em ferro quelatado em pó (SAUP) fornecido do terceiro ao 11º dia, com intervalo de 48 horas. O ferro dextrano aplicado no terceiro dia de vida e a suplementação com terra e SAUP foram eficientes para garantir o desempenho de leitões no período de aleitamento e não influenciaram no consumo de ração nem na taxa de viabilidade. As diferentes fontes de ferro estudadas não influenciaram o leucograma e foram eficientes na prevenção da anemia ferropriva e no desempenho dos leitões lactentes. Com relação às concentrações de hemoglobina e hematócrito, os animais suplementados com ferro dextrano apresentaram valores superiores quando comparados aos que recebem terra e SAUP.(AU)
In order to evaluate the use of different sources of iron to prevent iron deficiency anemia and to appraise the performance of suckling piglets, we sorted 202 piglets in five treatments. ID - intramuscular injection of 200mg of iron dextran on the third day of age; T24 - free daily access to land provided to piglets every 24 hours from the third to the nineteenth day; T48 - free daily access to land provided to piglets every 24 hours from the third to the tenth day and from day 11 to day 19 with an interval of 48 hours; T72 - free daily access to land provided to piglets every 24 hours from the third to the tenth day and from day 11 to day 19 with an interval of 72 hours; FS - Food supplement rich in iron-chelating powder (SAUP) available from the third to the eleventh day with an interval of 48 hours. The iron dextran applied on the third day of life as well as the supplementation with land and SAUP were effective to ensure the performance of piglets during the lactation period and did not affect feed intake or the viability rate. The different sources of iron studied did not influence the WBC (White Blood Cell) and succeded in preventing iron deficiency anemia and performance of suckling piglets. Regarding the concentrations of hemoglobin and hematocrit, the animals supplemented with iron dextran showed higher values when compared to those who receive land and SAUP.(AU)
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Animals , Anemia, Iron-Deficiency/prevention & control , Animals, Suckling/growth & development , Iron Chelating Agents/administration & dosage , Iron-Dextran Complex/administration & dosage , Swine/growth & development , Hematocrit/veterinary , Hemoglobins/analysis , Leukocyte Count/veterinaryABSTRACT
Objective To evaluate the effects of iron dextran or iron sucrose on the stability of fat emulsion in total nutrient admixture (TNA) in pediatric settings.Methods TNA with different intravenous doses of iron sucrose or iron dextran (0.25,0.5,0.75,or 1.00 mg) were prepared,and each dose was prepared 10 bags.The TNAs were stored at 25 ℃ for 3 days,and the stability of fat emulsion was observed by electron scanning microscopy.Meanwhile,the pH and osmolality were also measured.Results The particle sizes of fat emulsions in TNA with different concentrations of iron sucrose or iron dextran at different time points were not significantly different (F =0.32,P =0.7836 ; F =1.73,P =0.1321,respectively).The mean particle size of the fat emulsion in each group was ＜ 0.5 μm within 72 hours.For TNA containing different concentrations of iron,the percentage of particles ＞ 0.5 μm,pH,and osmotic pressure showed no significant difference at different time points (percentage:F =1.47,P =0.3467 ; F =1.04,P =0.4758.pH:F =0.63,P =0.5942 ; F =0.46,P =0.6825.osmotic pressure:F =1.37,P =0.3648 ; F =0.65,P =0.6023).Conclusion The TNA addeded with iron sucrose or iron dextran with an concentrations of ＜ 1％ is stable.
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Objective To investigate the effects of repeated low dose intravenous infusion of low molecular weight iron dextran and iron sucrose on oxidative stress in chronic renal failure (CRF) rats. Methods CRF model was established by 5/6 subtotal nephrectomy (5/6 Nx). Four weeks after removing the right kidney, successful rats were randomly divided into low molecular weight iron dextran group, sucrose iron group and CRF control group. The sham group was established simultaneously. The dose of iron administrated in each rat was similar in iron dextran group and sucrose iron group. There were 6 rats in each group. Animals were observed for 6weeks, then the blood, urine and renal tissue samples were collected, and indexes of renal function,anemia, iron status and oxidative stress were investigated. Results The hemoglobulin (Hb) level in iron groups was significantly higher as compared to control group (P＜0.05) but was not significantly different between two iron groups. The levels of serum iron, ferritin and saturation rate of transferring (TS) were obviously lower in control group as compared to sham group (P＜0.05).Levels of above 3 indexes were significantly higher in two iron groups as compared to control group (P＜0.05), but were not significantly different between two iron groups. Concentration of plasma advanced oxidation protein products (AOPP) was obviously higher in two iron groups than that in control group [(127.84±21.19) μmol/L, (134.21±29.38) μmol/L vs (81.83±19.93) μmol/L, P＜0.05]. Plasma malonaldehyde (MDA) was significantly higher in iron sucrose group than that in iron dextran group [(6.06±0.73) nmol/L vs (4.99i0.80) nmol/L, P＜0.05]. Serum levels of superoxide dismutase (SOD) and total anti-oxidant capacity (TAOC) had no significant differences among three CRF groups. Concentration of plasma glutathione peroxidase (GSH-Px) was significantly decreased in three CRF groups as compared to sham group (P＜0.05), while plasma GSH-Px was significantly lower in sucrose iron group than that in iron dextran group and control group [(2123.11±74.78)nmol ·ml-1 ·min-1 vs (2352.84±163.90) nmol· ml-1 ·min-1, (2310.23±125.99) nmol ·ml-1 ·min-1, P＜0.05]. Conclusions Injection of intravenous iron can partially improve the anemia and the iron status indexes in 5/6 Nx CRF rats. Repeated low dose intravenous infusion of iron dextran and iron sucrose can aggravate the oxidative stress state in CRF rats, and the iron sucrose is worst.
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Objective To determine the efficacy and safety of intravenous iron sucrose and oral iron dextran in renal anemia patients. Methods Sixty renal anemia patients were randomized into two groups:intravenous iron group(IV group, 100 mg iron sucrose twice a week) and oral iron group(oral group, 150 mg iron dextran every day). The changes in hemoglobin (Hb),hematocrit (Hct),serum ferritin (SF),and transferrin saturation (TSAT) were assessed on week 4,8, and 12 after treatment. The maintenance dosages of erythropoietin (EPO) after reaching treatment target and the adverse events were also observed. Results Hb increased after treatment in IV group [(79.87 ± 13.19) g/L to (106.11 ± 12.38) g/L] and oral group [(85.41 ± 11.49) g/L to (94.68 ± 10.06) g/L],and compared with that before treatment, there was significant difference in each group(P< 0.01 ). Also significant difference showed in Hb levels after treatment between two groups(P< 0.01 ). SF and TSAT levels were higher after treatment in IV group than those in oral group (P < 0.01 ). The adverse event was lower in IV group (0) than that in oral group (16.7%,5/30).Conclusions Oral iron dextran which has more adverse events and poor efficacy in curing anemia, can not correct anemia ideally. Meanwhile intravenous iron sucrose has positive effects on renal anemia with low adverse events, and it can be used as a long term iron supplementation in hemodialysis patients.
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Objective:To compare the intravenous (Ⅳ) administration with an oral iron agent administration in their efficacy and side effects in hemodialysis patients with renal anemia. Method:50 renal anemic patients were randomly grouped as the treatment group (TG) and controlled group (25 cases for each). 100 mg iron dextran injection was intravenously dropped twice weekly for the TG patients in the dialysis course, totally 10 times. 150 mg iron polysaccharide complex capsules was orally used qd in the controlled group. All the patients were treated in combination with 8000u of erythropoietin (EPO) weekly and observed for 8 weeks. The changes in Hb, serum ferritin level and agent side effect were monitored. Result:Hb, Hct and SP were all improved in both the TG and controlled group after the treatment (P
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OBJECTIVE:To establish the ultraviolet visible spectrophotometry(UV-VIS)for the determination of Fe content in iron dextran preparations.METHODS:Under the acidic condition,Fe~(3+)was dissociated from iron dextran solution by heating,then Fe~(3+)was deoxidized into Fe~(2+)by hydroxylamine hydrochloride,and red Fe~(2+)-orthophenanthroline complex was formed through combination with o-phenanthroline.The content of the Fe~(2+)-orthophenanthroline complex was determined by UV-VIS at a wavelength of 510 nm.RESULTS:The linear range of Fe~(2+)was 0.5～4.0?g?mL~(-1)(r=0.999 9). The average recoveries of two preparations(tablets and injection)of iron dextran were 99.8%(RSD=0.52%)and 99.7% (RSD=0.44%),respectively.CONCLUSION:The UV-VIS method is simple,accurate in results and applicable for the determination of iron dextran preparations.
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Twenty-eight patients received intravenous iron-dextran (TDI) for correction of iron deficiency anemia. One experienced a systemic reaction but recovered without untoward effects, another developed uterine contraction and both of this case were not included in this studiesThe rise in hemoglobin and hematocrit were noted after two weeks and was rapid over a period of six weeks. No delayed reactions were seen in all the casesWe believe that, although not without danger, the use of Iron-Dextran Infusion (TDI) by the method and techniques described should find a useful place in correction of severe iron deficiency anemia. (Summary)
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0.05), while significant difference was found in group A before and after intravenous ferrotherapy (P