Lack of intestinal bile results in delayed liver regeneration of normal rat liver after hepatectomy accompanied by impaired cyclin e-associated kinase activity

Junji Ueda, Kazuo Chijiiwa, kenji nakano, Gang Zhao, Masao Tanaka

    Research output: Contribution to journalArticle

    31 Citations (Scopus)

    Abstract

    Background. The importance of bile in liver regeneration after hepatectomy is unknown, although we have recently shown that preoperative internal biliary drainage is superior to external biliary drainage for liver regeneration in obstructive jaundiced rats. This study examined the hypothesis that the presence or absence of bile in the intestinal tract modulates cyclins and cyclin-dependent kinases after hepatectomy in rats. Methods. In male Wistar rats, bile was drained externally (ED group) or into the duodenum (ID group) for 7 days before 70% hepatectomy. Relative liver weight, DNA synthesis rate, and proliferating cell nuclear antigen labeling index were determined at the time of hepatectomy (day 0) and on days 1, 3, and 7 after hepatectomy. Posthepatectomy expressions of cyclin D1 and E and of cyclin D1-and E-associated kinases were serially analyzed. Hepatic function tests were performed. Results. No significant difference in liver function was found between the 2 groups at hepatectomy except for the lower albumin level in the ED group. The relative liver weight was lower in the ED group than in the ID group on day 3 after hepatectomy (ED, 2.58% ± 0.06%; ID, 2.84% ± 0.08%; P < .05). Both the DNA synthesis rate and proliferating cell nuclear antigen labeling index in the ED group (77 ± 36 disintegrations per minute/μg DNA and 8.3% ± 1.9%, respectively) were lower than those in the ID group (262 ± 50 disintegrations per minute/μg DNA and 21.6% ± 5.6%, respectively) on day 1 after hepatectomy (P < .05, respectively), Cyclin D1-associated kinase activity and cyclin D1 expression were not significantly different between the 2 groups. Cyclin E-associated kinase activity was lower in the ED group than in the ID group at 18 hours after hepatectomy (ED, 84% ± 17%; ID, 146% ± 28% of the value at 0 hour in the ID group; P < .05), although expressions of cyclin E and p27 binding to cyclin E were not significantly different between the 2 groups. Conclusions. These results suggest that the absence of bile in the intestine delays liver regeneration associated with cyclin E-associated kinase inactivation after hepatectomy.

    Original languageEnglish
    Pages (from-to)564-573
    Number of pages10
    JournalSurgery
    Volume131
    Issue number5
    DOIs
    Publication statusPublished - Jan 1 2002

    Fingerprint

    Liver Regeneration
    Cyclins
    Hepatectomy
    Bile
    Phosphotransferases
    Cyclin E
    Liver
    Cyclin D1
    DNA
    Proliferating Cell Nuclear Antigen
    Drainage
    Weights and Measures
    Obstructive Jaundice
    Cyclin-Dependent Kinases
    Duodenum
    Intestines
    Wistar Rats
    Albumins

    All Science Journal Classification (ASJC) codes

    • Surgery

    Cite this

    Lack of intestinal bile results in delayed liver regeneration of normal rat liver after hepatectomy accompanied by impaired cyclin e-associated kinase activity. / Ueda, Junji; Chijiiwa, Kazuo; nakano, kenji; Zhao, Gang; Tanaka, Masao.

    In: Surgery, Vol. 131, No. 5, 01.01.2002, p. 564-573.

    Research output: Contribution to journalArticle

    Ueda, Junji ; Chijiiwa, Kazuo ; nakano, kenji ; Zhao, Gang ; Tanaka, Masao. / Lack of intestinal bile results in delayed liver regeneration of normal rat liver after hepatectomy accompanied by impaired cyclin e-associated kinase activity. In: Surgery. 2002 ; Vol. 131, No. 5. pp. 564-573.
    @article{0e7f0dc96b934a3dbd52e52ff17d4808,
    title = "Lack of intestinal bile results in delayed liver regeneration of normal rat liver after hepatectomy accompanied by impaired cyclin e-associated kinase activity",
    abstract = "Background. The importance of bile in liver regeneration after hepatectomy is unknown, although we have recently shown that preoperative internal biliary drainage is superior to external biliary drainage for liver regeneration in obstructive jaundiced rats. This study examined the hypothesis that the presence or absence of bile in the intestinal tract modulates cyclins and cyclin-dependent kinases after hepatectomy in rats. Methods. In male Wistar rats, bile was drained externally (ED group) or into the duodenum (ID group) for 7 days before 70{\%} hepatectomy. Relative liver weight, DNA synthesis rate, and proliferating cell nuclear antigen labeling index were determined at the time of hepatectomy (day 0) and on days 1, 3, and 7 after hepatectomy. Posthepatectomy expressions of cyclin D1 and E and of cyclin D1-and E-associated kinases were serially analyzed. Hepatic function tests were performed. Results. No significant difference in liver function was found between the 2 groups at hepatectomy except for the lower albumin level in the ED group. The relative liver weight was lower in the ED group than in the ID group on day 3 after hepatectomy (ED, 2.58{\%} ± 0.06{\%}; ID, 2.84{\%} ± 0.08{\%}; P < .05). Both the DNA synthesis rate and proliferating cell nuclear antigen labeling index in the ED group (77 ± 36 disintegrations per minute/μg DNA and 8.3{\%} ± 1.9{\%}, respectively) were lower than those in the ID group (262 ± 50 disintegrations per minute/μg DNA and 21.6{\%} ± 5.6{\%}, respectively) on day 1 after hepatectomy (P < .05, respectively), Cyclin D1-associated kinase activity and cyclin D1 expression were not significantly different between the 2 groups. Cyclin E-associated kinase activity was lower in the ED group than in the ID group at 18 hours after hepatectomy (ED, 84{\%} ± 17{\%}; ID, 146{\%} ± 28{\%} of the value at 0 hour in the ID group; P < .05), although expressions of cyclin E and p27 binding to cyclin E were not significantly different between the 2 groups. Conclusions. These results suggest that the absence of bile in the intestine delays liver regeneration associated with cyclin E-associated kinase inactivation after hepatectomy.",
    author = "Junji Ueda and Kazuo Chijiiwa and kenji nakano and Gang Zhao and Masao Tanaka",
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    T1 - Lack of intestinal bile results in delayed liver regeneration of normal rat liver after hepatectomy accompanied by impaired cyclin e-associated kinase activity

    AU - Ueda, Junji

    AU - Chijiiwa, Kazuo

    AU - nakano, kenji

    AU - Zhao, Gang

    AU - Tanaka, Masao

    PY - 2002/1/1

    Y1 - 2002/1/1

    N2 - Background. The importance of bile in liver regeneration after hepatectomy is unknown, although we have recently shown that preoperative internal biliary drainage is superior to external biliary drainage for liver regeneration in obstructive jaundiced rats. This study examined the hypothesis that the presence or absence of bile in the intestinal tract modulates cyclins and cyclin-dependent kinases after hepatectomy in rats. Methods. In male Wistar rats, bile was drained externally (ED group) or into the duodenum (ID group) for 7 days before 70% hepatectomy. Relative liver weight, DNA synthesis rate, and proliferating cell nuclear antigen labeling index were determined at the time of hepatectomy (day 0) and on days 1, 3, and 7 after hepatectomy. Posthepatectomy expressions of cyclin D1 and E and of cyclin D1-and E-associated kinases were serially analyzed. Hepatic function tests were performed. Results. No significant difference in liver function was found between the 2 groups at hepatectomy except for the lower albumin level in the ED group. The relative liver weight was lower in the ED group than in the ID group on day 3 after hepatectomy (ED, 2.58% ± 0.06%; ID, 2.84% ± 0.08%; P < .05). Both the DNA synthesis rate and proliferating cell nuclear antigen labeling index in the ED group (77 ± 36 disintegrations per minute/μg DNA and 8.3% ± 1.9%, respectively) were lower than those in the ID group (262 ± 50 disintegrations per minute/μg DNA and 21.6% ± 5.6%, respectively) on day 1 after hepatectomy (P < .05, respectively), Cyclin D1-associated kinase activity and cyclin D1 expression were not significantly different between the 2 groups. Cyclin E-associated kinase activity was lower in the ED group than in the ID group at 18 hours after hepatectomy (ED, 84% ± 17%; ID, 146% ± 28% of the value at 0 hour in the ID group; P < .05), although expressions of cyclin E and p27 binding to cyclin E were not significantly different between the 2 groups. Conclusions. These results suggest that the absence of bile in the intestine delays liver regeneration associated with cyclin E-associated kinase inactivation after hepatectomy.

    AB - Background. The importance of bile in liver regeneration after hepatectomy is unknown, although we have recently shown that preoperative internal biliary drainage is superior to external biliary drainage for liver regeneration in obstructive jaundiced rats. This study examined the hypothesis that the presence or absence of bile in the intestinal tract modulates cyclins and cyclin-dependent kinases after hepatectomy in rats. Methods. In male Wistar rats, bile was drained externally (ED group) or into the duodenum (ID group) for 7 days before 70% hepatectomy. Relative liver weight, DNA synthesis rate, and proliferating cell nuclear antigen labeling index were determined at the time of hepatectomy (day 0) and on days 1, 3, and 7 after hepatectomy. Posthepatectomy expressions of cyclin D1 and E and of cyclin D1-and E-associated kinases were serially analyzed. Hepatic function tests were performed. Results. No significant difference in liver function was found between the 2 groups at hepatectomy except for the lower albumin level in the ED group. The relative liver weight was lower in the ED group than in the ID group on day 3 after hepatectomy (ED, 2.58% ± 0.06%; ID, 2.84% ± 0.08%; P < .05). Both the DNA synthesis rate and proliferating cell nuclear antigen labeling index in the ED group (77 ± 36 disintegrations per minute/μg DNA and 8.3% ± 1.9%, respectively) were lower than those in the ID group (262 ± 50 disintegrations per minute/μg DNA and 21.6% ± 5.6%, respectively) on day 1 after hepatectomy (P < .05, respectively), Cyclin D1-associated kinase activity and cyclin D1 expression were not significantly different between the 2 groups. Cyclin E-associated kinase activity was lower in the ED group than in the ID group at 18 hours after hepatectomy (ED, 84% ± 17%; ID, 146% ± 28% of the value at 0 hour in the ID group; P < .05), although expressions of cyclin E and p27 binding to cyclin E were not significantly different between the 2 groups. Conclusions. These results suggest that the absence of bile in the intestine delays liver regeneration associated with cyclin E-associated kinase inactivation after hepatectomy.

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    DO - 10.1067/msy.2002.123008

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    JO - Surgery

    JF - Surgery

    SN - 0039-6060

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