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朴秀淵 中央醫學社 1940 中央醫學 Vol.9 No.2
As the structural unit of the hepatic tissue, Wepfer (1664) and Malpighi (1666) termed the parenchymal units attached to the intrahepatic portal venules hepatic acini by the macroscopic dissection. Kiernan (1883) associated the three-dimensional structural unit of the liver with its secretory function. Brissaud and Sabourin (1886) reported the area of the hepatic parenchymal tissue draining into a bile duct in the portal trigone as the secretory unit of the liver. Mall (1906) proposed that the columnar structure around the portal field was the portal unit; he was supported by Arey (1932) and Opie (1944). Rappaport et al. (1954) defined the small irregular morular parenchymal tissue mass attached to the portal terminal venules accompanying with the intrahepatic arteries and bile duct in the livers of dogs and house rabbits as the structural and functional unit, of the liver, and called it the simple liver acinus. Rappaport (1958) termed the hepatic parenchymal tissue consisting of the simple liver acini around the preterminal portal vessel in man the complex acinus and the larger parenchymal tissue of the- simple liver and complex acini formed around the portal stem the acinar agglomerate. Recently the studies of the liver concerning the function of it in the histological and histochemical fields were carried out by many authors. Padykula (1953) reported that the patterns of distribution of hepatic mitochondria, Golgi apparatus and glycogen in various mammals, and the secretion of bile were associated with enzyme activity of hepatic succinic dehydrogenase in the histochemical way. Additionally he described the fact that his result was similar with them presented by Deane (1944), and Seligman and Rutenberg (1951). The technique, as presented by Wachstein and Meisel (1957), outlines bile canaliculi sharply and completely with the histochemical way of adenosine triphosphatase (ATP-ase) and diphosphatase (ADP-ase), as well as bile ducts, endothelium, and fibrous tissue, and can thus be effectively used as special stain for canaliculi, as well as an indicator of liver cell function. Smith and Coote (1863) studied the impairment of succinic dehydrogenase and other enzymes in the rat's liver given carbon tetrachloride in their histochemical study. Schumacher (1957) studied the action of respiratory enzymes; succinic dehydrogenase, cytochrome oxidase, triphosphopyridine nucleotide diaphorase and diphosphopyridine diaphorase in the livers of the horse, pig and cattle, and observed that the distribution was identical with the earlier reports on the former enzymes, but that it was in direct contrast to the former 2 enzymes in that the latter 2 enzymes were generally distributed to the pericentral area around the central vein. The author has attempted this experiment in order to study the hepatic structural and function unit of the mouse by observing the histological and histochemical or functional characters of the hepatic cells in different parts of hepatic lobule in the points; the distribution of mitochondria (2) the enzyme activity of succinic dehydrogenase (3) the enzyme activities of adenosine triphosphatase and diphosphatase, (4) the enzyme activities of diphosphopyridine nucleotide (NADH,) diaphorase and triphosphopyridine nucleotide (NADPH,) diaphorase, to accomplish the transfer of hydrogen from the reduced coenzymes to the cytochrome system and to other metabolic processes, and (5) the enzyme change of succinic dehydrogenase and histochemical change of hepatic glycogen of the mouse given carbon tetrachloride.
박수연,하성호,김재현,박태현 성균관대학교 생명과학자원연구소 1994 生命資源科學硏究 Vol.1 No.2
Posterior silk glands of Bombyx mori were cultured for the in vitro production of silk fibroin. Four-day-old fifth-instar larvae and Grace's media with or without silkworm hemolymph were used for experiments. With the addition of silkworm hemolymph, significant increase in the secretion of fibroin from the lumen to the outside of the gland was observed and total amount of fibroin increased by 14%. Most of the fibroin produced in the media was insoluble protein. Total amount of fibroin reached a plateau in 24 day culture without the addition of silkworm hemolymph, whereas it increased continuously in the medium supplemented with silkworm hemolymph.