• 제목/요약/키워드: IGF-I level

검색결과 108건 처리시간 0.022초

Muscle Strength and Biochemical Markers as Predictors of Depression in Hemodialysis Patients: A Cross-Sectional Study

  • Soudabeh Zare;Motahareh Hasani;M. Dulce Estevao;Rahim Tahmasebi;Leila Azadbakht;Farzad Shidfar;Javad Heshmati;Somayeh Ziaei
    • Clinical Nutrition Research
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    • 제12권4호
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    • pp.293-303
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    • 2023
  • Patients with chronic renal failure, many of which treated with hemodialysis, present a high prevalence of impaired muscle strength which suggest that muscle mass parameters may be used as markers for changes in muscle in these patients. Measurement of handgrip strength (HGS) is a common, simple, and quick measure of muscle function an indicator of overall muscle strength which has been associated with physical activity and several anthropometric traits. Intercellular adhesion molecule-1 (ICAM-1) and insulin-like growth factor-1 (IGF-1) are biochemical markers associated with inflammatory processes which are a common consequence of dialysis. Additionally, hemodialysis patients frequently present signs of malnutrition and depression. This cross-sectional study aimed to evaluate if muscle and biochemical markers could be used to predict the risk of depression in hemodialysis patients. Several anthropometric parameters, nutrient intake, depression state and the serum levels of ICAM-1 and IGF-1 were determined and Pearson's correlation coefficient and/or Spearman's correlation coefficient were used to test the correlation between them. Our results do not show a correlation between HGF, IGF-1 and ICAM-1 with the depression status of the patients, but mid-arm muscle circumference (MAMC) was statistically and positively correlated with depression. Additionally, ICAM-1 levels were negatively correlated with HGS, MAMC, and IGF-1. Overall, the results of the present study suggest that HGS may be used as an indicator of cardiovascular diseases and MAMC may be a good predictor of the level of depression in hemodialysis patients, although further studies are required.

여성 성전환수술을 받은 환자의 호르몬 정량분석 (Hormonal Analysis of Female Transgender Patients Performed Gender Reassignment Operation)

  • 박정민;권용석;이근철;김석권;곽현;김상범
    • Archives of Plastic Surgery
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    • 제32권6호
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    • pp.699-705
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    • 2005
  • Transgender is the severe type of gender identity disorder. The prevalence rate of transgender is reported to occur to about 1 out of 50,000 men, and about 1 out of 10,000 women. As for Korea, it is estimated to have about 1400 transgender patients. Lately, not only the numbers of them are increasing but also they are influencing our society increasingly. As for female transgender patients, they take female hormone for a long term before and even after the operation to maintain their physical identity of female. We have analyzed insulin like growth factor-1(IGF-1), insulin like growth factor protein binding-3(IGFBP-3), female hormone, male hormone and thyroid hormone in female transgender patients who have undergone the gender reassignment operation. We examined the changes of hormone level due to having female hormone steadily, and also examined how the steady use of the hormone could affect body organs. As for IGF-1, it showed significantly low in the female transgender group compared to control ($319.30{\pm}37.4$ vs $539{\pm}55.0$, p<0.05). As for IGFBP-3, there was no significant difference ($2859{\pm}200.3$ vs $2607{\pm}262.5$, p>0.05). As for female hormone, there was no significant differences in FSH($13.42{\pm}13.8$ vs $8.95{\pm}3.5$, p>0.05), estradiol($104.41{\pm}97.1$ vs $121.68{\pm}60.2$, p>0.05), and LH($7.62{\pm}5.6$ vs $7.4{\pm}3.3$, p>0.05). Even in comparison of testosterone, there was no significant differences($0.23{\pm}0.09$ vs $0.33{\pm}1.33$, p>0.05). As for thyroid hormone, there was no significant differences in TSH and free T4($1.34{\pm}0.94$ vs $1.71{\pm}0.12$, $1.4{\pm}0.37$ vs $1.46{\pm}0.17$, p>0.05). Therefore, this study concludes that apart from the decreased level of IGF-1, the possible endocrine side-effect problem due to female hormone seems to be low because there was no differences of female, male, and thyroid hormone level compared with normal female. Further study will be required in metabolic change including bone metabolism occurred by decrease level of IGF-I.

예측성인신장이 작은 조기사춘기 여아에서 성선자극호르몬 방출호르몬 효능약제와 성장호르몬 병합치료의 성장획득 효과 (Growth promoting effect of combined gonadotropin releasing hormone analogue and growth hormone therapy in early pubertal girls with predicted low adult heights)

  • 홍은정;한헌석
    • Clinical and Experimental Pediatrics
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    • 제50권7호
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    • pp.678-685
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    • 2007
  • 목 적 : 조기사춘기 여아에게 성선자극호르몬 방출호르몬 효능약제(gonadotropin releasing hormone analogue, GnRHa)와 성장호르몬(growth hormone, GH)의 병합치료를 시행하여 성인신장획득에 대한 효과를 알아보고자 하였다. 방 법 : 2001년 1월부터 2004년 1월까지 조기사춘기로 소아과 외래를 내원한 여아 중 예측성인신장이 -2 표준편차점수 이하로 표적키보다 훨씬 작은 23명($9.73{\pm}1.59$세)을 대상으로 초경을 시작하지 않은 군(Group 1, n=19, $9.59{\pm}1.59$세)과 초경을 시작한 군(Group 2, n=4, $10.38{\pm}1.44$세)으로 나누어 GnRHa와 GH의 병합치료를 시행하고, 치료 시작 전후 및 두 군 간의 역연령, 골연령, 성장속도, 신장, 예측성인신장, 혈청 IGF-1, IGFBP-3 치, BMI를 비교 분석하였다. 결 과 : 치료 시작 시의 두 군의 역연령, 성장속도, BMI는 유의한 차이는 없었으나 골연령 및 골연령과 역연령의 차이는 Group 2에서 Group 1보다 유의하게 증가되어 있었다. 신장은 Group 1의 평균이 $130.7{\pm}7.4cm$, Group 2의 평균이 $140.7{\pm}6.0cm$으로 유의하게 차이가 있었으나 표적키, 예측성인신장, 혈청 IGF-1과 IGFBP-3은 유의한 차이가 없었다. 치료 종료 시의 Group 1의 골연령은 평균 $12.18{\pm}1.02$세, Group 2의 골연령은 평균 $13.56{\pm}0.83$세로 치료 시작 전과 마찬가지로 Group 2에서 유의하게 높았으나, 골연령과 역연령의 차이, 신장, 그리고 IGF-1은 차이가 없었다. 전체에서 골연령과 역연령의 차이가 치료 시작 전에 평균 $2.50{\pm}2.46$세, 치료 종료 후에 평균 $1.10{\pm}0.97$세로 감소되었고, 역연령에 대한 골연령의 비도 $1.22{\pm}0.16$에서 $1.10{\pm}0.10$으로 감소되어서 결국 골연령의 증가는 현저히 감소하였다. 성장 속도 역시 평균 $7.46{\pm}2.44cm$/년에서 $5.65{\pm}2.08cm$/년으로 감소하였다. 예측성인신장은 치료 전에 평균 $146.6{\pm}3.50cm$, 치료 후에 평균 $153.8{\pm}4.7cm$으로 현저히 증가하였으며 신장의 표준편차점수도 $-0.66{\pm}1.02$ SDS에서 $-0.34{\pm}1.04$ SDS로 유의하게 증가하였다. BMI는 치료 전 평균 $18.80{\pm}2.35kg/m^2$, 치료 후에 평균 $20.4{\pm}2.53kg/m^2$로 유의하게 증가하였고, 혈청 IGF-1은 치료 후에 유의하게 증가하였으나 IGFBP-3는 유의한 변화가 없었다. 치료 전후에 두 군에서 각 성장 변수의 변화를 보면 골연령과 역연령의 차이는 유의하게 감소하였고 신장, 예측성인신장, BMI는 유의하게 증가하였다. 그러나 혈청 IGF-1의 경우, Group 1에서는 치료 후에 현저히 증가하였으나 Group 2에서는 별 차이가 없었다. 혈청 IGFBP-3는 모두에서 유의한 차이가 없었다. 결 론 : 조기사춘기 여아에게 GnRHa와 GH의 병합치료를 시행했을 때, 골연령의 증가 속도와 성장속도가 감소하고, 혈청 IGF-1이 증가함으로써 예측성인신장이 의미 있게 증가하며 표적키에 가깝게 증가한다. 또한 IGF-1의 변화를 보면 초경을 시작하지 않은 조기사춘기 여아가 초경을 시작한 경우보다 성장획득에 대한 가능성이 더 클 것으로 생각된다.

Evaluation of Insulin Like Growth Facror-1 Genetic Polymorphism with Gastric Cancer Susceptibility and Clinicopathological Features

  • Farahani, Roya Kishani;Azimzadeh, Pedram;Rostami, Elham;Malekpour, Habib;Aghdae, Hamid Asadzadeh;Pourhoseingholi, Mohamad Amin;Mojarad, Ehsan Nazemalhosseini;Zali, Mohammad Reza
    • Asian Pacific Journal of Cancer Prevention
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    • 제16권10호
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    • pp.4215-4218
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    • 2015
  • Gastric cancer (GC) is one of the most common malignancies in the world. It is the first cause of cancer deaths in both sexes In Iranian population. Circulating insulin-like growth factor-one (IGF-1) levels have been associated for gastric cancer. IGF-1 protein has central roles involved in the regulation of epithelial cell growth, proliferation, transformation, apoptosis and metastasis. Single nucleotide polymorphism in IGF-1 regulatory elements may lead to alter in IGF-1expression level and GC susceptibility. The aim of this study was to investigate the influence of IGF-1 gene polymorphism (rs5742612) on risk of GC and clinicopathological features for the first time in Iranian population. In total, 241 subjects including 100 patients with GC and 141 healthy controls were recruited in our study. Genotypes were analyzed using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) assay with DNA from peripheral blood. The polymorphism was statistically analyzed to investigate the relationship with the risk of GC and clinicopathological properties. Logistic regression analysis revealed that there was no significant association between rs5742612 and the risk of GC. In addition, no significant association between genotypes and clinicopathological features was observed (p value>0.05). The frequencies of the CC, CT, and TT genotypes were 97%, 3%, and 0%, respectively, among the cases, and 97.9%, 2.1%, and 0%, respectively, among the controls. CC genotype was more frequent in cases and controls. The frequencies of C and T alleles were 98.9% and 1.1% in controls and 98.5% and 1.5% in patient respectively. Our results provide the first evidence that this variant is rare in Iranian population and it may not be a powerful genetic predisposing biomarker for prediction GC clinicopathological features in an Iranian population.

반복적인 모형마 운동에 따른 기수의 혈장 그렐린과 호르몬들의 관계 (The Relationship of Repeated Racehorse Simulator Exercise on Plasma Ghrelin and Hormons in Jockeys)

  • 장석암
    • 한국산학기술학회논문지
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    • 제12권4호
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    • pp.1756-1762
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    • 2011
  • 이 연구 목적은 기수를 대상으로 공복 시 반복적인 모의 경주마 운동 시 그렐린과 관련 호르몬의 관계를 규명하고자 한다. 공복의 기수와 기수후보생들은 경마의 첫 번째 단거리 1000 m, 두 번째 중거리 1700 m 세 번째 장거리 2300 m의 반복적인 모의 경주마 운동 전과 직후 정맥혈을 채혈하여 그렐린, 렙틴, 인슐린, IGF-I과 코티졸을 분석하였다. 피어슨 상관관계에서 기수후보생이 3차 운동 후 글레린과 인슐린 농도가 r= .55를 나타내었다. 기수의 운동 전 글레린과 렙틴 농도가 r= .73으로 운동전 글레린 렙틴 수준이 통계적으로 유의성(p<.05) 있는 관계와 기수후보생이 글레린과 코티졸 농도에서 r= .64를 나타내었다. 글레린 렙틴 인슐린 IGF-1 농도는 운동전에 비교하여 통계적으로 유의성 없이 1차 운동 후 증가와 2차, 3차 감소, 경마기수와 후보생보도 통계적으로 유의성 없는 차이를 나타내었다. 경마기수에 비교 하여 후보생은 1차 2차, 3차 운동에서 통계적으로 유의성 있게 IGF-1는 낮게(p<.05) 코티졸 농도는 높게(p<.001) 나타내었다. 연구결과 반복적인 모의 경주마 운동으로 인한 에너지 소모 반응에서 기수후보생의 3차 운동에서 만이 글레린과 인슐린의 상관관계를 나타내었다.

Effect of Chromium Picolinate on Growth Performance, Carcass Characteristics, Serum Metabolites and Metabolism of Lipid in Pigs

  • Xi, Gang;Xu, Zirong;Wu, Si-hung;Chen, Shijiang
    • Asian-Australasian Journal of Animal Sciences
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    • 제14권2호
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    • pp.258-262
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    • 2001
  • The study was conducted to evaluate the effects of chromium picolinate (CrP) on growth, carcass characteristics and serum metabolites in growing-finishing pigs. A total of 96 Landrace$\times$Yorkshire$\times$Duroc hybrid pigs, initial live weight about $38.12{\pm}00kg$, were randomly assigned to 2 groups (16 pigs per pen, 3 pens per group), each group had 48 pigs with an equal number of barrows and gilts. The pigs were fed the diet with or without $200{\mu}g/kg$ Cr from CrP. The results indicated that the addition of $200{\mu}g/kg$ CrP increased ADG by 3.58% and decreased feed conversion rate (FCR) by 3.00% compared to the control group. Pigs fed CrP had 7.58% (p<0.05) higher carcass lean percentage, 15.55% (p<0.05) larger longissimus muscle area (LMA) and 10.90% (p<0.05) lower back fat thickness, 15.17% (p<0.05) lower carcass fat percentage. In addition, the IGF-I level in serum was elevated by 79.20% (p<0.05), the Insulin and cortisol level decreased by 27.35% (p<0.05) and 34.58% (p<0.05) respectively with supplementation of CrP. Analysis of subcutaneous fat (10th rib) showed that the activity of hormone sensitive lipase (HSL) increased by 79.58% (p<0.05) and the activities of isocitrate dehydrogenase (ISD) and malate dehydrogenase (MDH) decreased significantly by 15.06% (p<0.05) and 54.53% (p<0.05) respectively in the $200{\mu}g/kg$ CrP group. The concentration of RNA, RNA/DNA in LMA increased by 31.89% (p<0.05) and 5.41% (p<0.05) respectively with the addition of CrP. These results suggest that CrP reduced fat deposits by decreasing lipogenic enzyme activities and increasing HSL activity and may have promoted muscle anabolic metabolism through elevated IGF-I levels.

Effects of Insulin and IGFs on Phosphate Uptake in Primary Cultured Rabbit Renal Proximal Tubule Cells

  • Han, Ho-Jae;Park, Kwon-Moo
    • The Korean Journal of Physiology
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    • 제30권1호
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    • pp.63-76
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    • 1996
  • The aim of present study was to characterize phosphate uptake and to investigate the mechanism for the insulin and insulin-like growth factor(IGF) stimulation of phosphate uptake in primary cultured rabbit renal proximal tubule cells. Results were as follows : 1. The primary cultured proximal tubule cells had accumulated $6.68{\pm}0.70$ nmole phosphate/mg protein in the presence of 140 mM NaCl and $2.07{\pm}0.17$ nmole phosphate/mg protein in the presence of 140 mM KCl during a 60 minute uptake period. Raising the concentration of extracellular phosphate to 100 mM$(48.33{\pm}1.76\;pmole/mg\;protein/min)$ induced decrease in phosphate uptake compared with that in control cells maintained in 1 mM phosphate$(190.66{\pm}13.01\;pmole/mg\;protein/min)$. Optimal phosphate uptake was observed at pH 6.5 in the presence of 140 mM NaCl. Phosphate uptake at pH 7.2 and pH 7.9 decreased to $83.06{\pm}5.75%\;and\;74.61{\pm}3.29%$ of that of pH 6.5, respectively. 2. Phosphate uptake was inhibited by iodoacetic acid(IAA) or valinomycin treatment $(62.41{\pm}4.40%\;and\;12.80{\pm}1.64%\;of\;that\;of\;control,\;respectively)$. When IAA and valinomycin were added together, phosphate uptake was inhibited to $8.04{\pm}0.61%$ of that of control. Phosphate uptake by the primary proximal tubule cells was significantly reduced by ouabain treatment$(80.27{\pm}6.96%\;of\;that\;of\;control)$. Inhibition of protein and/or RNA synthesis by either cycloheximide or actinomycin D markedly attenuated phosphate uptake. 3. Extracellular CAMP and phorbol 12-myristate 13 acetate(PMA) decreased phosphate uptake in a dose-dependent manner in all experimental conditions. Treatment of cells with pertussis toxin or cholera toxin inhibited phosphate uptake. cAMP concentration between $10^{-6}\;M\;and\;10^{-4}\;M$ significantly inhibited phosphate uptake. Phosphate uptake was blocked to about 25% of that of control at 100 ng/ml PMA. 3-Isobutyl-1-methyl-xanthine(IBMX) inhibited phosphate uptake. However, in the presence of IBMX, the inhibitory effect of exogenous cAMP was not significantly potentiated. Forskolin decreased phosphate transport. Acetylsalicylic acid did not inhibit phosphate uptake. The 1,2-dioctanoyl-sn-glycorol(DAG) and 1-oleoyl-2-acetyl-sn- glycerol(OAG) showed a inhibitory effect. However, staurosporine had no effect on phosphate uptake. When PMA and staurosporine were treated together, inhibition of phosphate uptake was not observed. In conclusion, phosphate uptake is stimulated by high sodium and low phosphate and pH 6.5 in the culture medium. Membrane potential and intracellular energy levels are also an important factor fer phosphate transport. Insulin and IGF-I stimulate phosphate uptake through a mechanisms that involve do novo protein and/or RNA synthesis and decrease of intracellular cAMP level. Also protein kinase C(PKC) is may play a regulatory role in transducing the insulin and IGF-I signal for phosphate transport in primary cultured proximal tubule cells.

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옻나무 유래 Flavonoid 처리가 흰쥐 Leydig 세포의 체외배양에서 Testosterone 분비에 미치는 영향 (Effects of Flavonoid from Rhus verniciflua on Testosterone Secretion by Rat Leydig Cells In Vitro)

  • 성환후;최선호;장유민;민관식;우제현;장원경;정남철;나천수;정일정
    • 한국가축번식학회지
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    • 제25권2호
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    • pp.125-130
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    • 2001
  • 본 연구의 목적은 옻나무 유래 F가 성숙 수컷 흰쥐의 생식 기능에 직접 미치는 영향을 알아보고자, 횐쥐 Leydig 세포를 분리, 회수하여 체외배양에서 F 단독 혹은 LH와의 공배양하여 배양액의 testosterone 농도를 조사하였다. 1. Leydig 세포를 36시간까지 체외 배양하여 testosterone의 농도를 조사한 결과, 6시간 배양구에 비해 24시간 배양구가 가장 높은 농도(P<0.05)를 나타내었으며 36시간 배양에는 감소되었다. 2. F를 단독 첨가하여 12시간 배양한 실험에서 F 80ng 첨가구에서 유의적으로(P<0.05) 높은 testosterone 분비를 보였다. 3. LH 10ng 및 100ng 첨가구의 시간별 testosterone 분비의 변화로는, LH 10ng 첨가구에서는 6∼12시간 이후, LH 100ng 첨가구에서는 3∼6시간 사이에서 증가를 보였으며, 6시간에는 두 처리구 모두 유의차를 보였다. 4. LH 10ng 첨가 실험에서는 LH 10ng+F 40ng에서 12시간 배양 시, 유의적으로 높은 testosterone 분비를 확인하였다. 5. LH 100ng과 F의 공배양실험에서 3시간 배양한 결과, F20ng 및 F40ng처리구가 대조구에 비해 유의적으로(P<0.05) 높은 testosterone의 분비를 보였다. 6. Leydig 세포에 LH+IGF-I 첨가효과를 비교 검토한 결과, IGF-I 50ng과 100ng 첨가구에서는 대조구에 비해 높게 나타났으나, LH 100ng 단독처리와 유의차는 없었다. 이상의 결과로, 옻나무 유래 Flavonoid는 횐쥐 정소 Leydig 세포의 testosterone 분비를 촉진하는 작용을 하는 것으로 사료되며, 특히 LH+F구에서 testosterone 분비를 더욱 향상시킴으로써 옻나무 유래 F는 포유동물의 생식기능에 중요하게 작용하는 것으로 사료된다.> 이상의 난소당 난자회수율 (22.6개/63.8%)은 비발정기의 것보다 유의적으로 높았다 (P < 0.05). 발정기의 난소에서 110 $\mu\textrm{m}$ 이상의 난자의 MI까지의 핵발달율 (24.3%)은 110 Um이하의 것 또는 비발정기의 110 $\mu\textrm{m}$ 이상 및 이하의 난자의 것보다 유의적으로 높았다 (2.5, 6.8 및 0.0%; P <0.05). 발정기의 110 $\mu\textrm{m}$ 이상 난자의 AT 또는 MII까지의 핵 발달율은 다른 처리군보다 높게 발달하였다. TCM199에서 MI까지의 핵발달율 (21.8%)은 $\alpha$-MEM (10.0%)보다 유의적으로 높았다 (P< 0.05). 그러나 AT까지의 핵 발달율은 TCM199 (7.3%)과 (-MEM (1.1%) 간에는 유의적 차이가 있었으나 (P<0.05), MII까지는 TCM199 (0.9%)과 (-MEM (1.1%)에는 유의차가 없었다. 본 연구결과는 110 $\mu\textrm{m}$ 이상의 난자는 발정기의 난소로부터 더 많은 난자를 회수할 수 있었고, 110 $\mu\textrm{m}$ 이상의 난자들이 MI, AT까지의 핵발달 능력이 높았다. 또한 체외성숙배양액 시 TCM199이 $\alpha$-MEM보다 Mi과AI까지 높은 발달율을 보였다.U/$m\ell$ FSH+10 $m\ell$U/$m\ell$ LH 의 첨가가 생쥐 preantral follicles의 체외배양을 위한 적정조건임을 제시하고 있다., 30, 40 $\mu\textrm{g}$/kg을 각각 2일간 투여했을 때 신장, 비장 및 간의 중량은 정상대조군과

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Hair follicle development and related gene and protein expression of skins in Rex rabbits during the first 8 weeks of life

  • Wu, Zhenyu;Sun, Liangzhan;Liu, Gongyan;Liu, Hongli;Liu, Hanzhong;Yu, Zhiju;Xu, Shuang;Li, Fuchang;Qin, Yinghe
    • Asian-Australasian Journal of Animal Sciences
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    • 제32권4호
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    • pp.477-484
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    • 2019
  • Objective: We aimed to observe hair follicle (HF) development in the dorsal skin and elucidate the expression patterns of genes and proteins related to skin and HF development in Rex rabbits from birth to 8 weeks of age. Methods: Whole-skin samples were obtained from the backs of Rex rabbits at 0, 2, 4, 6, and 8 weeks of age, the morphological development of primary and secondary HFs was observed, and the gene transcript levels of insulin-like growth factor-I (IGF-I), epidermal growth factor (EGF), bone morphogenetic protein 2 (BMP2), transforming growth factor ${\beta}-1$, 2, and 3 ($TGF{\beta}-1$, $TGF{\beta}-2$, and $TGF{\beta}-3$) were examined using quantitative real-time polymerase chain reaction (PCR). Additionally, Wnt family member 10b (Wnt10b) and ${\beta}$-Catenin gene and protein expression were examined by quantitative real-time PCR and western blot, respectively. Results: The results showed significant changes in the differentiation of primary and secondary HFs in Rex rabbits during their first 8 weeks of life. The IGF-I, EGF, $TGF{\beta}-2$, and $TGF{\beta}-3$ transcript levels in the rabbits were significantly lower at 2 weeks of age than at birth and gradually increased thereafter, while the BMP2 and $TGF{\beta}-1$ transcript levels at 2 weeks of age were significantly higher than those at birth and gradually decreased thereafter. ${\beta}$-Catenin gene expression was also significantly affected by age, while the Wnt10b transcript level was not. However, the Wnt10b and ${\beta}$-catenin protein expression levels were the lowest at 2 and 4 weeks of age. Conclusion: Our data showed that a series of changes in HFs in dorsal skin occurred during the first 8 weeks. Many genes, such as IGF-I, EGF, BMP2, $TGF{\beta}-1$, $TGF{\beta}-2$, $TGF{\beta}-3$, and ${\beta}$-Catenin, participated in this process, and the related proteins Wnt10b and ${\beta}$-Catenin in skin were also affected by age.

Effects of Astragalus Polysaccharides, Achyranthes bidentata Polysaccharides, and Acantbepanax senticosus Saponin on the Performance and Immunity in Weaned Pigs

  • Kang, P.;Xiao, H.L.;Hou, Y.Q.;Ding, B.Y.;Liu, Y.L.;Zhu, H.L.;Hu, Q.Z.;Hu, Y.;Yin, Y.L.
    • Asian-Australasian Journal of Animal Sciences
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    • 제23권6호
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    • pp.750-756
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    • 2010
  • Two trials were conducted to study the effects of two Chinese herbal polysaccharides, Astragalus polysaccharides (APS) and Achyranthes bidentata polysaccharides (ABPS), and one Chinese herbal saponin, Acantbepanax senticosus saponin (ASS), on the immunity and growth performance of weaned pigs. Experiment 1 was a 14-day growth assay, in which 32 weaned pigs were randomly allocated to one of four dietary treatments: i) 0.05% talcum powder control; ii) 0.05% APS; iii) 0.05% mixture of APS and ASS in a 1:1 ratio by weight; and iv) 0.05% mixture of APS, ASS, and ABPS in a ratio of 1:1:1 by weight. Blood samples were collected on day 14 to determine plasma parameters. Feed intake, body weight gain, and feed efficiency were also determined. Experiment 2 was a 21-day immunity assay, in which 16 weaned pigs were randomly allotted to one of two dietary treatments: i) 0.05% talcum powder control; and ii) 0.05% mixture of APS and ASS in a 1:1 ratio by weight. On day 21, pigs were challenged with lipopolysaccharide (LPS) and 3 h later blood samples were collected and analyzed for lymphocyte proliferation as well as interleukin 6 (IL-6), insulin-like growth factor 1 (IGF-1), growth hormone (GH), and cortisol levels. In Experiment 1, feeding Chinese herbal polysaccharides and saponin increased growth performance of the pigs. The effects of the mixture of APS and ASS were especially notable, as there was a significant improvement in growth performance compared with the control (p<0.05). The plasma concentration of immunoglobulin G (IgG), nitric oxide (NO), and nitric oxide synthase (NOS) were increased in all treatments groups, with the mixture of APS and ASS increasing the level of IgG and NOS significantly (p<0.05), compared with the control. There was no difference in the NO level between the control and treatment groups (p>0.05). In Experiment 2, Chinese herbal polysaccharides and saponin showed immunostimulating effects. The level of cortisol, GH, and IGF-I were significantly increased (p>0.05), and the level of IL-6 showed a significant decrease (p<0.05) in the APS and ASS treatment after the LPS challenge. The mixture of APS and ASS could stimulate the blood lymphocyte proliferation significantly whether the LPS was injected or not (p<0.05). These results show that Chinese herbal extracts can improve growth performance and stimulate immunity of weaned pigs. A mixture of APS and ASS, compared with APS alone, could be a new kind of immunostimulant for weaned pigs, which could result in greater positive effects on their growth performance and immunity.