This study was conducted to investigate the effect of dietary proline(Pro), and Pro and hydroxyproline(Hyp) in combination on the growth performance, total Hyp and collagen concentrations of tissues, and prolyl 4-hydr...This study was conducted to investigate the effect of dietary proline(Pro), and Pro and hydroxyproline(Hyp) in combination on the growth performance, total Hyp and collagen concentrations of tissues, and prolyl 4-hydroxylase α(I)(P4H α(I)) gene expression in juvenile turbot feeding high plant protein diets. A diet containing 50% crude protein and 12% crude lipid was formulated as the basal and control, on which other two protein and lipid contents identical experimental diets were formulated by supplementing the basal with either 0.75% Pro(Pro-0.75) or 0.75% Pro and 0.75% Hyp(Pro+Hyp). Four groups of fish in indoor seawater recirculating systems, 35 individuals each, were fed twice a day to apparent satiation for 10 weeks. The results showed that dietary Pro and Hyp supplementation had no significant effect on growth performance and feed utilization of juvenile turbot(P > 0.05). Total Hyp and collagen concentrations in muscle were significantly increased when dietary Pro and Hyp increased(P < 0.05), and fish fed diet Pro+Hyp showed significantly higher free Hyp content in plasma than those fed other diets(P < 0.05). The expression of P4 H α(I) gene in liver and muscle was significantly up regulated in fish fed diet Pro-0.75 in comparison with control(P < 0.05); however the gene was significantly down regulated in fish fed diet Pro+Hyp in muscle in comparison with fish fed diet Pro-0.75(P < 0.05). It can be concluded that supplement of crystal L-Pro and L-Hyp to high plant protein diets did not show positive effects on growth performance of juvenile turbot, but enhanced total collagen concentrations in muscle.展开更多
A total of 16 Friesian cows were used in the study to determine the peripheral concentration of hydroxyproline(HYPRO) and 3 methyl histidine(3 MEHIS).The objectives of the experiment were to find out the relationshi...A total of 16 Friesian cows were used in the study to determine the peripheral concentration of hydroxyproline(HYPRO) and 3 methyl histidine(3 MEHIS).The objectives of the experiment were to find out the relationship between collagen and myosin degradation and uterine involution in the postpartum cow.The results showed tht the mean concentrations of HYPRO and 3 MEHIS were 13.47±2.38 and 18.35±2.77 n mole/mL,respectively,for the cows during the days 60～90 postpartum.And for the cows immediately after calving the concentrations of HYPRO and 3 HEHIS reduced from 34.29 and 28.06 nmole/mL on the day one after calving to the normal lever of 13.23 and 17.97 n mole on the day 50 postpartum,respectively.There was a good correlation between the peripheral concentrations of both HYPRO and 3 MEHIS and the diameters of the involuting uterus(r=0.8128).展开更多
The urinary concentrations of hydroxyproline (HYPRO)and 3 -methyl histidine (3 - MEHIS) were de- termined in 16 Chinese-Holstein cows. The objectives of the experiment were to find out thhe relationship between collag...The urinary concentrations of hydroxyproline (HYPRO)and 3 -methyl histidine (3 - MEHIS) were de- termined in 16 Chinese-Holstein cows. The objectives of the experiment were to find out thhe relationship between collagen and myosin ddegradation and uterine involution in the postpartum cow. The results in the experiment showed that the mean concentrations of HYPRO and 3-MEHIS were 138.32±22.99 and 37.09 ±3.90 nmol·mL-1,respectively,for the cows during the days between 60-90 postpartum,and for the cows immediately after calving the concentrations of HYPRO and 3 -MEHIS reduced from 284.30 and 65.48 nmol ·mL-1 on the day one after calving to the normal level of 109.18 and 33.51 nmol·mL^-1 on the day 50 post- partum,respectively. There was a good correlation between the urinary concentrations of both HYPRO and 3 -MEHIS and the diameters of the involuting uterus (r = 0. 79).展开更多
An efficient protocol for plant regeneration from protoplasts of hydroxyproline(HYP)resistant cell line of Onoblychis viciaefolia was established. In SH medium supplemented with 1 mg/L 2, 4-dichlorophenoxy-acetic acid...An efficient protocol for plant regeneration from protoplasts of hydroxyproline(HYP)resistant cell line of Onoblychis viciaefolia was established. In SH medium supplemented with 1 mg/L 2, 4-dichlorophenoxy-acetic acid (2,4-D), 0.5 mg/L kinetin (KT) and 0.2 mg/L naphthalene acetic acid (NAA), the division frequency of protoplastderived cells reached uP to over 60 %, and microcalli were obtained in 5-6 wk. Upon transferring them on agar solidified MS medium plus 2 mg/L indole-3-acetic acid (IAA), shoots were induced. After cultivating them on MS medium with or without IAA, roots were regenerated.Chromosome number of all protoplast-regenerated plants examined were normal (2n=28). The protoplast-derived calli and plants grew vigorously on the medium containing 10 mmol/L HYP.展开更多
Fifteen cases of fresh fractures have been studied, including 14 cases of tubu-lar bone fractures with age from 28 to 60 years and one case of vertebral fracture ofdorsolumbar region, 16 years of age. There were 13 ma...Fifteen cases of fresh fractures have been studied, including 14 cases of tubu-lar bone fractures with age from 28 to 60 years and one case of vertebral fracture ofdorsolumbar region, 16 years of age. There were 13 male and 2 female patients. Theyhad no endocrine disturbances or other bone diseases. The ratio ofhydroxyproline/creatinine (HP/Cr) in these cases increased gradually within 20-30 daysafter fracture and then reached the peak value which was about 3-4 times of normal, thepeak value maintained for a long time. If the trauma was mild or the patient was young,the peak began to decline on the 60th day after fracture. While in those severe cases withprolonged confinement to bed, the peak only began to come down about 110th dayafter fracture. The ratio of HP/Cr decreased rapidly from the peak at first, then pursueda slow course. Generally, the ratio of HP/Cr returned to normal on the 240th to 310thday. Bone union began at a time when peak value started to decline, and with completionof the remodelling process, the HP/Cr value returned to normal.展开更多
Vitamin C is a water soluble vitamin found in many natural sources, citric fruits, vegetables, particularly as antioxidants and as a factor to catabolism and metabolism. The aim of this article is to correlate the lev...Vitamin C is a water soluble vitamin found in many natural sources, citric fruits, vegetables, particularly as antioxidants and as a factor to catabolism and metabolism. The aim of this article is to correlate the level of vitamin C and the hydroxyproline level in urine samples among young palestinian children from age 5 - 14 years. Materials and Methods: Urine samples of 34 individuals of both sexes, their ages ranged from 5 - 14 years were collected and analyzed for determination of Urinary Hydroxyproline by using Modified Neuman and Logan Method. The result of this study shows a significant correlation between Vitamin C and Hydroxyproline at level 0.01. The conclusion of this study was that low vitamin C intake was found among young palestinian children from age 5 - 14 years, Vitamin C should be supplemented in the drinks taken by young palestinian children from age 5 - 14 years as well as further research and investigation with large samples required to include all children from middle and southern Palestine.展开更多
The content of hydroxyproline of collagen sponge is tested by Woessner Method I.The hydroxyproline standard curve and regression equation are described.The content of hydroxyproline of collagen sponge is tested subseq...The content of hydroxyproline of collagen sponge is tested by Woessner Method I.The hydroxyproline standard curve and regression equation are described.The content of hydroxyproline of collagen sponge is tested subsequently.The result show that the hydroxyproline content is consistent with that of collagen protein,which could be concluded that the purity of collagen sponge,either prepared in our institute or that from abroad is high.展开更多
A series of poly（lactic acid-4-hydroxyproline-polyethylene glycol） （PLA-Hpr-PEG） copolymers were synthesized by direct melt copolymerization of D,L-lactic acid and 4-hydroxyproline with different feed amount of po...A series of poly（lactic acid-4-hydroxyproline-polyethylene glycol） （PLA-Hpr-PEG） copolymers were synthesized by direct melt copolymerization of D,L-lactic acid and 4-hydroxyproline with different feed amount of polyethylene glycol （PEG） 0.1%, 0.5%, 1% and 5%, respectively. The properties of these copolymers were characterized by using IR spectroscopy, proton nuclear magnetic resonance （1H-NMR） spectroscopy, gel permeation chromatography （GPC）, X-ray diffraction and differential scaning calorimetry （DSC）. PLA-Hpr-PEG are amorphous copolymers. Copolymers showed increasing water uptake capacity with increasing PEG percentage in the feed, which result in an increasing degradable rate in phosphate buffer solution （pH 7.4） at 37℃.展开更多
BACKGROUND Growth hormone(GH)plays a crucial role in wound healing and tissue repair in postoperative patients.In particular,colonic anastomosis healing following colorectal surgery is impaired by numerous chemotherap...BACKGROUND Growth hormone(GH)plays a crucial role in wound healing and tissue repair in postoperative patients.In particular,colonic anastomosis healing following colorectal surgery is impaired by numerous chemotherapy agents.AIM To investigate whether GH can improve the healing of a colonic anastomosis following the adverse effects of intraperitoneal administration of 5-fluorouracil(5-FU),bleomycin and cisplatin.METHODS Eighty Wistar rats underwent laparotomy and a 1 cm-resection of the transverse colon,followed by an end-to-end anastomosis under general anesthesia.The rats were blindly allocated into four equal groups and administered a different daily intraperitoneal therapeutic regimen for 6 days.The control group(A)received normal saline.Group B received chemotherapy with 5-FU(20 mg/kg),bleomycin(4 mg/kg)and cisplatin(0.7 mg/kg).Group C received GH(2 mg/kg),and group D received the aforementioned combination chemotherapy and GH,as described.The rats were sacrificed on the 7th postoperative day and the anastomoses were macroscopically and microscop-ically examined.Body weight,bursting pressure,hydroxyproline levels and inflammation markers were measured.RESULTS All rats survived until the day of sacrifice,with no infections or other complications.A decrease in the body weight of group D rats was observed,not statistically significant compared to group A(P=1),but significantly different to groups C(P=0.001)and B(P<0.01).Anastomotic dehiscence rate was not statistically different between the groups.Bursting pressure was not significantly different between groups A and D(P=1.0),whereas group B had a significantly lower bursting pressure compared to group D(P<0.001).All groups had significantly more adhesions than group A.Hydroxyproline,as a measurement of collagen deposition,was significantly higher in group D compared to group B(P<0.05),and higher,but not statistically significant,compared to group A.Significant changes in group D were recorded,compared to group A regarding inflammation(3.450 vs 2.900,P=0.016)and fibroblast activity(2.75 vs 3.25,P=0.021).Neoangiogenesis and collagen deposition were not signifi-cantly different between groups A and D.Collagen deposition was significantly increased in group D compared to group B(P<0.001).CONCLUSION Intraperitoneal administration of chemotherapy has an adverse effect on the healing process of colonic anastomosis.However,GH can inhibit the deleterious effect of administered chemotherapy agents and induce colonic healing in rats.展开更多
基金financially supported by the China Agriculture Research System (CARS-50-G08)Agricultural Scientific and Technological Achievements into Capital (2010GB23600673)the National Natural Science Foundation of China (Grant Nos. 31072222 and 30901 108)
文摘This study was conducted to investigate the effect of dietary proline(Pro), and Pro and hydroxyproline(Hyp) in combination on the growth performance, total Hyp and collagen concentrations of tissues, and prolyl 4-hydroxylase α(I)(P4H α(I)) gene expression in juvenile turbot feeding high plant protein diets. A diet containing 50% crude protein and 12% crude lipid was formulated as the basal and control, on which other two protein and lipid contents identical experimental diets were formulated by supplementing the basal with either 0.75% Pro(Pro-0.75) or 0.75% Pro and 0.75% Hyp(Pro+Hyp). Four groups of fish in indoor seawater recirculating systems, 35 individuals each, were fed twice a day to apparent satiation for 10 weeks. The results showed that dietary Pro and Hyp supplementation had no significant effect on growth performance and feed utilization of juvenile turbot(P > 0.05). Total Hyp and collagen concentrations in muscle were significantly increased when dietary Pro and Hyp increased(P < 0.05), and fish fed diet Pro+Hyp showed significantly higher free Hyp content in plasma than those fed other diets(P < 0.05). The expression of P4 H α(I) gene in liver and muscle was significantly up regulated in fish fed diet Pro-0.75 in comparison with control(P < 0.05); however the gene was significantly down regulated in fish fed diet Pro+Hyp in muscle in comparison with fish fed diet Pro-0.75(P < 0.05). It can be concluded that supplement of crystal L-Pro and L-Hyp to high plant protein diets did not show positive effects on growth performance of juvenile turbot, but enhanced total collagen concentrations in muscle.
基金The project is supported financially by Heilongjiang and Chinese ntional and Scientific fund
文摘A total of 16 Friesian cows were used in the study to determine the peripheral concentration of hydroxyproline(HYPRO) and 3 methyl histidine(3 MEHIS).The objectives of the experiment were to find out the relationship between collagen and myosin degradation and uterine involution in the postpartum cow.The results showed tht the mean concentrations of HYPRO and 3 MEHIS were 13.47±2.38 and 18.35±2.77 n mole/mL,respectively,for the cows during the days 60～90 postpartum.And for the cows immediately after calving the concentrations of HYPRO and 3 HEHIS reduced from 34.29 and 28.06 nmole/mL on the day one after calving to the normal lever of 13.23 and 17.97 n mole on the day 50 postpartum,respectively.There was a good correlation between the peripheral concentrations of both HYPRO and 3 MEHIS and the diameters of the involuting uterus(r=0.8128).
基金supported financially by Heilongjiang(C- 9702)and Chinese National (39870572)Natural and Scicntificfunds.
文摘The urinary concentrations of hydroxyproline (HYPRO)and 3 -methyl histidine (3 - MEHIS) were de- termined in 16 Chinese-Holstein cows. The objectives of the experiment were to find out thhe relationship between collagen and myosin ddegradation and uterine involution in the postpartum cow. The results in the experiment showed that the mean concentrations of HYPRO and 3-MEHIS were 138.32±22.99 and 37.09 ±3.90 nmol·mL-1,respectively,for the cows during the days between 60-90 postpartum,and for the cows immediately after calving the concentrations of HYPRO and 3 -MEHIS reduced from 284.30 and 65.48 nmol ·mL-1 on the day one after calving to the normal level of 109.18 and 33.51 nmol·mL^-1 on the day 50 post- partum,respectively. There was a good correlation between the urinary concentrations of both HYPRO and 3 -MEHIS and the diameters of the involuting uterus (r = 0. 79).
文摘An efficient protocol for plant regeneration from protoplasts of hydroxyproline(HYP)resistant cell line of Onoblychis viciaefolia was established. In SH medium supplemented with 1 mg/L 2, 4-dichlorophenoxy-acetic acid (2,4-D), 0.5 mg/L kinetin (KT) and 0.2 mg/L naphthalene acetic acid (NAA), the division frequency of protoplastderived cells reached uP to over 60 %, and microcalli were obtained in 5-6 wk. Upon transferring them on agar solidified MS medium plus 2 mg/L indole-3-acetic acid (IAA), shoots were induced. After cultivating them on MS medium with or without IAA, roots were regenerated.Chromosome number of all protoplast-regenerated plants examined were normal (2n=28). The protoplast-derived calli and plants grew vigorously on the medium containing 10 mmol/L HYP.
文摘Fifteen cases of fresh fractures have been studied, including 14 cases of tubu-lar bone fractures with age from 28 to 60 years and one case of vertebral fracture ofdorsolumbar region, 16 years of age. There were 13 male and 2 female patients. Theyhad no endocrine disturbances or other bone diseases. The ratio ofhydroxyproline/creatinine (HP/Cr) in these cases increased gradually within 20-30 daysafter fracture and then reached the peak value which was about 3-4 times of normal, thepeak value maintained for a long time. If the trauma was mild or the patient was young,the peak began to decline on the 60th day after fracture. While in those severe cases withprolonged confinement to bed, the peak only began to come down about 110th dayafter fracture. The ratio of HP/Cr decreased rapidly from the peak at first, then pursueda slow course. Generally, the ratio of HP/Cr returned to normal on the 240th to 310thday. Bone union began at a time when peak value started to decline, and with completionof the remodelling process, the HP/Cr value returned to normal.
文摘Vitamin C is a water soluble vitamin found in many natural sources, citric fruits, vegetables, particularly as antioxidants and as a factor to catabolism and metabolism. The aim of this article is to correlate the level of vitamin C and the hydroxyproline level in urine samples among young palestinian children from age 5 - 14 years. Materials and Methods: Urine samples of 34 individuals of both sexes, their ages ranged from 5 - 14 years were collected and analyzed for determination of Urinary Hydroxyproline by using Modified Neuman and Logan Method. The result of this study shows a significant correlation between Vitamin C and Hydroxyproline at level 0.01. The conclusion of this study was that low vitamin C intake was found among young palestinian children from age 5 - 14 years, Vitamin C should be supplemented in the drinks taken by young palestinian children from age 5 - 14 years as well as further research and investigation with large samples required to include all children from middle and southern Palestine.
文摘The content of hydroxyproline of collagen sponge is tested by Woessner Method I.The hydroxyproline standard curve and regression equation are described.The content of hydroxyproline of collagen sponge is tested subsequently.The result show that the hydroxyproline content is consistent with that of collagen protein,which could be concluded that the purity of collagen sponge,either prepared in our institute or that from abroad is high.
文摘A series of poly（lactic acid-4-hydroxyproline-polyethylene glycol） （PLA-Hpr-PEG） copolymers were synthesized by direct melt copolymerization of D,L-lactic acid and 4-hydroxyproline with different feed amount of polyethylene glycol （PEG） 0.1%, 0.5%, 1% and 5%, respectively. The properties of these copolymers were characterized by using IR spectroscopy, proton nuclear magnetic resonance （1H-NMR） spectroscopy, gel permeation chromatography （GPC）, X-ray diffraction and differential scaning calorimetry （DSC）. PLA-Hpr-PEG are amorphous copolymers. Copolymers showed increasing water uptake capacity with increasing PEG percentage in the feed, which result in an increasing degradable rate in phosphate buffer solution （pH 7.4） at 37℃.
文摘BACKGROUND Growth hormone(GH)plays a crucial role in wound healing and tissue repair in postoperative patients.In particular,colonic anastomosis healing following colorectal surgery is impaired by numerous chemotherapy agents.AIM To investigate whether GH can improve the healing of a colonic anastomosis following the adverse effects of intraperitoneal administration of 5-fluorouracil(5-FU),bleomycin and cisplatin.METHODS Eighty Wistar rats underwent laparotomy and a 1 cm-resection of the transverse colon,followed by an end-to-end anastomosis under general anesthesia.The rats were blindly allocated into four equal groups and administered a different daily intraperitoneal therapeutic regimen for 6 days.The control group(A)received normal saline.Group B received chemotherapy with 5-FU(20 mg/kg),bleomycin(4 mg/kg)and cisplatin(0.7 mg/kg).Group C received GH(2 mg/kg),and group D received the aforementioned combination chemotherapy and GH,as described.The rats were sacrificed on the 7th postoperative day and the anastomoses were macroscopically and microscop-ically examined.Body weight,bursting pressure,hydroxyproline levels and inflammation markers were measured.RESULTS All rats survived until the day of sacrifice,with no infections or other complications.A decrease in the body weight of group D rats was observed,not statistically significant compared to group A(P=1),but significantly different to groups C(P=0.001)and B(P<0.01).Anastomotic dehiscence rate was not statistically different between the groups.Bursting pressure was not significantly different between groups A and D(P=1.0),whereas group B had a significantly lower bursting pressure compared to group D(P<0.001).All groups had significantly more adhesions than group A.Hydroxyproline,as a measurement of collagen deposition,was significantly higher in group D compared to group B(P<0.05),and higher,but not statistically significant,compared to group A.Significant changes in group D were recorded,compared to group A regarding inflammation(3.450 vs 2.900,P=0.016)and fibroblast activity(2.75 vs 3.25,P=0.021).Neoangiogenesis and collagen deposition were not signifi-cantly different between groups A and D.Collagen deposition was significantly increased in group D compared to group B(P<0.001).CONCLUSION Intraperitoneal administration of chemotherapy has an adverse effect on the healing process of colonic anastomosis.However,GH can inhibit the deleterious effect of administered chemotherapy agents and induce colonic healing in rats.
