[Objective]Aimed to study the nature,characteristics and ultrastructure of fibers of Ovis aries and several kinds of special animals.[Method]Wool,cashmere,alpaca,Bactrian camel hairs,rabbit hair,mohair and yak hair we...[Objective]Aimed to study the nature,characteristics and ultrastructure of fibers of Ovis aries and several kinds of special animals.[Method]Wool,cashmere,alpaca,Bactrian camel hairs,rabbit hair,mohair and yak hair were used as the experimental materials,and scanning electron microscopy was used to observe their scale structure.[Result]The rake angle of wool was large with an average of 33.2°,the scale density was 16.2-34.9 scales/mm,the average height of scale was 12.95 μm,and the average thickness was 0.63 μm;the rake angle of cashmere was smaller than wool with an average of 20.6°,the scale density was of 10.3-15.6 scales/mm,the scale distance was large,the average height of scale was 16.09 μm,and the average thickness was 0.46 μm;the average rake angle of alpaca was 34.6°,with the average scale height of 5.85 μm,and average thickness of 0.33 μm;the average rake angle of camel hair was 33.5°,with the average scale height of 11.30 μm and average thickness of 0.37 μm;the average rake angle of rabbit hair was 31.2°,with average scale height of 7.03 μm and average thickness of 0.36 μm;the rake angle value of mohair was between wool and cashmere,and the average of which was 23.7°,the scale density value was also between the wool and cashmere,with the average scale height of 15.82 μm and average thickness of 0.61 μm;the average rake angle yak hair was 33.2°,with the average height of 9.08 μm and average thickness of 0.46 μm.[Conclusion]The results of this study could provide a basis for the identification of different fiber types.展开更多
Congenital hepatic fibrosis (CHF) is an autosomal recessive disorder that belongs to the family of fibropolycystic liver diseases. This family includes a spectrum of disorders which are usually found in combination wi...Congenital hepatic fibrosis (CHF) is an autosomal recessive disorder that belongs to the family of fibropolycystic liver diseases. This family includes a spectrum of disorders which are usually found in combination with each other and are usually inherited. Clinically fibropolycystic diseases have three effects being present in different proportions, those of a space occupying lesion, of portal hypertension and of cholangitis. In most patients, the first manifestations of CHF are signs and symptoms related to portal hypertension such as splenomegaly and varices. Portal hypertension in these patients has been attributed to the hypoplasia or compression of the portal vein radicles in the fibrous bands. Cavernous transformation of the portal vein (CTPV) is a relatively rare condition resulting from extrahepatic portal vein obstruction with recanalization or collateral vein formation to bypass the obstruction. It has been found that patients with CHF having an accompanying CTPV have relatively large splenomegaly and suffers more frequent episodes of bleeding from esophageal varices.We believe that CTPV is a congenital component of CHF and also one of the important causative factors of portal hypertension in these patients.展开更多
Objective To investigate the effect of cavernous nerve injury on the nNOS containing nerve fibers in corpus cavernosum Methods Thirty three male Sprague Dawley (SD) rats were randomly divided into 3 groups: sham ...Objective To investigate the effect of cavernous nerve injury on the nNOS containing nerve fibers in corpus cavernosum Methods Thirty three male Sprague Dawley (SD) rats were randomly divided into 3 groups: sham operated controls (n=5) underwent pelvic exploration without transection of the cavernous nerve; unilateral injury group (n=14) had their cavernous nerve cut on one side; and bilateral injury group (n=14) underwent neurotomy on both sides Corpora cavernosa were harvested at the 3rd week and 6th month after surgery nNOS positive nerve fibers were examined with streptavidin peroxidase immunohistochemistry techniques (SP method) Results After bilateral ablation, the nNOS positive nerve fibers were significantly decreased at the 3rd week (17±4) and remained so at the 6th month (16±4) For the unilateral injury group, the nNOS positive nerve fibers were similarly decreased on the side of the neurotomy at the 3rd week (18±6), but by the 6th month, the number increased significantly (61±9) and approximated the level on the contralateral side (81±13) Conclusion Following unilateral cavernous nerve ablation in rats, nNOS containing nerve fibers regenerate 6 months after surgery This regeneration process does not occur in animals with bilateral cavernous nerve injury, suggesting that during radical pelvic surgery, the cavernous nerve has to be preserved at least on one side in order to maintain the capacity for penile erection展开更多
基金Supported by special fund for scientific research-related subsidy management of state level-scientific research institute for public welfare (Lanzhou Institute of Animal Science and Veterinary Pharma-ceutics,CAAS) (BRF060102)~~
文摘[Objective]Aimed to study the nature,characteristics and ultrastructure of fibers of Ovis aries and several kinds of special animals.[Method]Wool,cashmere,alpaca,Bactrian camel hairs,rabbit hair,mohair and yak hair were used as the experimental materials,and scanning electron microscopy was used to observe their scale structure.[Result]The rake angle of wool was large with an average of 33.2°,the scale density was 16.2-34.9 scales/mm,the average height of scale was 12.95 μm,and the average thickness was 0.63 μm;the rake angle of cashmere was smaller than wool with an average of 20.6°,the scale density was of 10.3-15.6 scales/mm,the scale distance was large,the average height of scale was 16.09 μm,and the average thickness was 0.46 μm;the average rake angle of alpaca was 34.6°,with the average scale height of 5.85 μm,and average thickness of 0.33 μm;the average rake angle of camel hair was 33.5°,with the average scale height of 11.30 μm and average thickness of 0.37 μm;the average rake angle of rabbit hair was 31.2°,with average scale height of 7.03 μm and average thickness of 0.36 μm;the rake angle value of mohair was between wool and cashmere,and the average of which was 23.7°,the scale density value was also between the wool and cashmere,with the average scale height of 15.82 μm and average thickness of 0.61 μm;the average rake angle yak hair was 33.2°,with the average height of 9.08 μm and average thickness of 0.46 μm.[Conclusion]The results of this study could provide a basis for the identification of different fiber types.
文摘Congenital hepatic fibrosis (CHF) is an autosomal recessive disorder that belongs to the family of fibropolycystic liver diseases. This family includes a spectrum of disorders which are usually found in combination with each other and are usually inherited. Clinically fibropolycystic diseases have three effects being present in different proportions, those of a space occupying lesion, of portal hypertension and of cholangitis. In most patients, the first manifestations of CHF are signs and symptoms related to portal hypertension such as splenomegaly and varices. Portal hypertension in these patients has been attributed to the hypoplasia or compression of the portal vein radicles in the fibrous bands. Cavernous transformation of the portal vein (CTPV) is a relatively rare condition resulting from extrahepatic portal vein obstruction with recanalization or collateral vein formation to bypass the obstruction. It has been found that patients with CHF having an accompanying CTPV have relatively large splenomegaly and suffers more frequent episodes of bleeding from esophageal varices.We believe that CTPV is a congenital component of CHF and also one of the important causative factors of portal hypertension in these patients.
文摘Objective To investigate the effect of cavernous nerve injury on the nNOS containing nerve fibers in corpus cavernosum Methods Thirty three male Sprague Dawley (SD) rats were randomly divided into 3 groups: sham operated controls (n=5) underwent pelvic exploration without transection of the cavernous nerve; unilateral injury group (n=14) had their cavernous nerve cut on one side; and bilateral injury group (n=14) underwent neurotomy on both sides Corpora cavernosa were harvested at the 3rd week and 6th month after surgery nNOS positive nerve fibers were examined with streptavidin peroxidase immunohistochemistry techniques (SP method) Results After bilateral ablation, the nNOS positive nerve fibers were significantly decreased at the 3rd week (17±4) and remained so at the 6th month (16±4) For the unilateral injury group, the nNOS positive nerve fibers were similarly decreased on the side of the neurotomy at the 3rd week (18±6), but by the 6th month, the number increased significantly (61±9) and approximated the level on the contralateral side (81±13) Conclusion Following unilateral cavernous nerve ablation in rats, nNOS containing nerve fibers regenerate 6 months after surgery This regeneration process does not occur in animals with bilateral cavernous nerve injury, suggesting that during radical pelvic surgery, the cavernous nerve has to be preserved at least on one side in order to maintain the capacity for penile erection
