七氟醚对感染性休克大鼠全身炎性反应及心肺功能的影响

Objective To investigate the effects of sevoflurane on the systemic inflammatory response and cardiopulmonary function in septic shock rats. Methods Thirty-two SD rats, 8-10 months old, weighing 250-300 g, were randomly divided into 4 groups (n = 8 each): sham operation group (group S), cecal ligation and puncture (CLP) induced septic shock group (group CLP) , sevoflurane I group (group SEV, ) and sevoflurane II group (group SEV,). The abdomen was opened but CLP was not performed in group S. The septic shock was induced by CLP as described by Baker et al. Group SEV, and SEV, inhaled 2.4% sevoflurane for 30 min at 1 h and 3 h after the successful establishment of the model respectively. At 1, 3 and 5 h after septic shock, MAP and HR were recorded and arterial blood samples were taken for blood gas analysis and determination of plasma concentrations of TNF-α, IL-1, MDA and NO. The left ventricular end-diastolic diameter (LVEDD), left ventricular end-systolic diameter (LVESD), left ventricular fractional shortening (LVFS) and cardiac output (CO) were also detected 5 h after septic shock. The animals were killed after the detection of cardiac function. The lungs were removed for determination of W/D lung weight ratio and Evans blue (EB) content. The tissues from the heart, lung, liver and kidney were taken for detection of NF-kB activity by electrophoretic mobility shift assay (EMSA) ResultsMAP was significantly lower, HR higher, LVEDD, LVESD, LVFS, CO, pH value, PaO2 and PaCO2 lower, and W/D lung weight ratio, EB content, plasma concentrations of TNF-α, IL-1, MDA and NO, and NF-kB activity in the heart, lung, liver and kidney tissues higher in group CLP, SEV, and SEV2 than in group S (P < 0.05). NF-kB activity in the heart, lung, liver and kidney tissues and plasma concentrations of TNF-α, IL-1, MDA and NO were significantly lower in group SEV, than in group CLP and SEV2 ( P < 0.05 ), but no significant differences were found in the other indices between group SEV, and CLP and between group SEV1 and SEV2 ( P > 0.05). Conclusion Inhalation of 2.4% sevoflurane for 30 min 1 h after septic shock can inhibit the systemic inflammatory response slightly, but can not improve the cardiopulmonary function in rats with CLP-induced septic shock.     

七氟醚对感染性休克大鼠全身炎性反应及心肺功能的影响

Objective To investigate the effects of sevoflurane on the systemic inflammatory response and cardiopulmonary function in septic shock rats. Methods Thirty-two SD rats, 8-10 months old, weighing 250-300 g, were randomly divided into 4 groups (n = 8 each): sham operation group (group S), cecal ligation and puncture (CLP) induced septic shock group (group CLP) , sevoflurane I group (group SEV, ) and sevoflurane II group (group SEV,). The abdomen was opened but CLP was not performed in group S. The septic shock was induced by CLP as described by Baker et al. Group SEV, and SEV, inhaled 2.4% sevoflurane for 30 min at 1 h and 3 h after the successful establishment of the model respectively. At 1, 3 and 5 h after septic shock, MAP and HR were recorded and arterial blood samples were taken for blood gas analysis and determination of plasma concentrations of TNF-α, IL-1, MDA and NO. The left ventricular end-diastolic diameter (LVEDD), left ventricular end-systolic diameter (LVESD), left ventricular fractional shortening (LVFS) and cardiac output (CO) were also detected 5 h after septic shock. The animals were killed after the detection of cardiac function. The lungs were removed for determination of W/D lung weight ratio and Evans blue (EB) content. The tissues from the heart, lung, liver and kidney were taken for detection of NF-kB activity by electrophoretic mobility shift assay (EMSA) ResultsMAP was significantly lower, HR higher, LVEDD, LVESD, LVFS, CO, pH value, PaO2 and PaCO2 lower, and W/D lung weight ratio, EB content, plasma concentrations of TNF-α, IL-1, MDA and NO, and NF-kB activity in the heart, lung, liver and kidney tissues higher in group CLP, SEV, and SEV2 than in group S (P < 0.05). NF-kB activity in the heart, lung, liver and kidney tissues and plasma concentrations of TNF-α, IL-1, MDA and NO were significantly lower in group SEV, than in group CLP and SEV2 ( P < 0.05 ), but no significant differences were found in the other indices between group SEV, and CLP and between group SEV1 and SEV2 ( P > 0.05). Conclusion Inhalation of 2.4% sevoflurane for 30 min 1 h after septic shock can inhibit the systemic inflammatory response slightly, but can not improve the cardiopulmonary function in rats with CLP-induced septic shock.     

七氟醚对感染性休克大鼠全身炎性反应及心肺功能的影响

Objective To investigate the effects of sevoflurane on the systemic inflammatory response and cardiopulmonary function in septic shock rats. Methods Thirty-two SD rats, 8-10 months old, weighing 250-300 g, were randomly divided into 4 groups (n = 8 each): sham operation group (group S), cecal ligation and puncture (CLP) induced septic shock group (group CLP) , sevoflurane I group (group SEV, ) and sevoflurane II group (group SEV,). The abdomen was opened but CLP was not performed in group S. The septic shock was induced by CLP as described by Baker et al. Group SEV, and SEV, inhaled 2.4% sevoflurane for 30 min at 1 h and 3 h after the successful establishment of the model respectively. At 1, 3 and 5 h after septic shock, MAP and HR were recorded and arterial blood samples were taken for blood gas analysis and determination of plasma concentrations of TNF-α, IL-1, MDA and NO. The left ventricular end-diastolic diameter (LVEDD), left ventricular end-systolic diameter (LVESD), left ventricular fractional shortening (LVFS) and cardiac output (CO) were also detected 5 h after septic shock. The animals were killed after the detection of cardiac function. The lungs were removed for determination of W/D lung weight ratio and Evans blue (EB) content. The tissues from the heart, lung, liver and kidney were taken for detection of NF-kB activity by electrophoretic mobility shift assay (EMSA) ResultsMAP was significantly lower, HR higher, LVEDD, LVESD, LVFS, CO, pH value, PaO2 and PaCO2 lower, and W/D lung weight ratio, EB content, plasma concentrations of TNF-α, IL-1, MDA and NO, and NF-kB activity in the heart, lung, liver and kidney tissues higher in group CLP, SEV, and SEV2 than in group S (P < 0.05). NF-kB activity in the heart, lung, liver and kidney tissues and plasma concentrations of TNF-α, IL-1, MDA and NO were significantly lower in group SEV, than in group CLP and SEV2 ( P < 0.05 ), but no significant differences were found in the other indices between group SEV, and CLP and between group SEV1 and SEV2 ( P > 0.05). Conclusion Inhalation of 2.4% sevoflurane for 30 min 1 h after septic shock can inhibit the systemic inflammatory response slightly, but can not improve the cardiopulmonary function in rats with CLP-induced septic shock.     

七氟醚对感染性休克大鼠全身炎性反应及心肺功能的影响

Objective To investigate the effects of sevoflurane on the systemic inflammatory response and cardiopulmonary function in septic shock rats. Methods Thirty-two SD rats, 8-10 months old, weighing 250-300 g, were randomly divided into 4 groups (n = 8 each): sham operation group (group S), cecal ligation and puncture (CLP) induced septic shock group (group CLP) , sevoflurane I group (group SEV, ) and sevoflurane II group (group SEV,). The abdomen was opened but CLP was not performed in group S. The septic shock was induced by CLP as described by Baker et al. Group SEV, and SEV, inhaled 2.4% sevoflurane for 30 min at 1 h and 3 h after the successful establishment of the model respectively. At 1, 3 and 5 h after septic shock, MAP and HR were recorded and arterial blood samples were taken for blood gas analysis and determination of plasma concentrations of TNF-α, IL-1, MDA and NO. The left ventricular end-diastolic diameter (LVEDD), left ventricular end-systolic diameter (LVESD), left ventricular fractional shortening (LVFS) and cardiac output (CO) were also detected 5 h after septic shock. The animals were killed after the detection of cardiac function. The lungs were removed for determination of W/D lung weight ratio and Evans blue (EB) content. The tissues from the heart, lung, liver and kidney were taken for detection of NF-kB activity by electrophoretic mobility shift assay (EMSA) ResultsMAP was significantly lower, HR higher, LVEDD, LVESD, LVFS, CO, pH value, PaO2 and PaCO2 lower, and W/D lung weight ratio, EB content, plasma concentrations of TNF-α, IL-1, MDA and NO, and NF-kB activity in the heart, lung, liver and kidney tissues higher in group CLP, SEV, and SEV2 than in group S (P < 0.05). NF-kB activity in the heart, lung, liver and kidney tissues and plasma concentrations of TNF-α, IL-1, MDA and NO were significantly lower in group SEV, than in group CLP and SEV2 ( P < 0.05 ), but no significant differences were found in the other indices between group SEV, and CLP and between group SEV1 and SEV2 ( P > 0.05). Conclusion Inhalation of 2.4% sevoflurane for 30 min 1 h after septic shock can inhibit the systemic inflammatory response slightly, but can not improve the cardiopulmonary function in rats with CLP-induced septic shock.     

七氟醚对感染性休克大鼠全身炎性反应及心肺功能的影响

Objective To investigate the effects of sevoflurane on the systemic inflammatory response and cardiopulmonary function in septic shock rats. Methods Thirty-two SD rats, 8-10 months old, weighing 250-300 g, were randomly divided into 4 groups (n = 8 each): sham operation group (group S), cecal ligation and puncture (CLP) induced septic shock group (group CLP) , sevoflurane I group (group SEV, ) and sevoflurane II group (group SEV,). The abdomen was opened but CLP was not performed in group S. The septic shock was induced by CLP as described by Baker et al. Group SEV, and SEV, inhaled 2.4% sevoflurane for 30 min at 1 h and 3 h after the successful establishment of the model respectively. At 1, 3 and 5 h after septic shock, MAP and HR were recorded and arterial blood samples were taken for blood gas analysis and determination of plasma concentrations of TNF-α, IL-1, MDA and NO. The left ventricular end-diastolic diameter (LVEDD), left ventricular end-systolic diameter (LVESD), left ventricular fractional shortening (LVFS) and cardiac output (CO) were also detected 5 h after septic shock. The animals were killed after the detection of cardiac function. The lungs were removed for determination of W/D lung weight ratio and Evans blue (EB) content. The tissues from the heart, lung, liver and kidney were taken for detection of NF-kB activity by electrophoretic mobility shift assay (EMSA) ResultsMAP was significantly lower, HR higher, LVEDD, LVESD, LVFS, CO, pH value, PaO2 and PaCO2 lower, and W/D lung weight ratio, EB content, plasma concentrations of TNF-α, IL-1, MDA and NO, and NF-kB activity in the heart, lung, liver and kidney tissues higher in group CLP, SEV, and SEV2 than in group S (P < 0.05). NF-kB activity in the heart, lung, liver and kidney tissues and plasma concentrations of TNF-α, IL-1, MDA and NO were significantly lower in group SEV, than in group CLP and SEV2 ( P < 0.05 ), but no significant differences were found in the other indices between group SEV, and CLP and between group SEV1 and SEV2 ( P > 0.05). Conclusion Inhalation of 2.4% sevoflurane for 30 min 1 h after septic shock can inhibit the systemic inflammatory response slightly, but can not improve the cardiopulmonary function in rats with CLP-induced septic shock.     

七氟醚对感染性休克大鼠全身炎性反应及心肺功能的影响

Objective To investigate the effects of sevoflurane on the systemic inflammatory response and cardiopulmonary function in septic shock rats. Methods Thirty-two SD rats, 8-10 months old, weighing 250-300 g, were randomly divided into 4 groups (n = 8 each): sham operation group (group S), cecal ligation and puncture (CLP) induced septic shock group (group CLP) , sevoflurane I group (group SEV, ) and sevoflurane II group (group SEV,). The abdomen was opened but CLP was not performed in group S. The septic shock was induced by CLP as described by Baker et al. Group SEV, and SEV, inhaled 2.4% sevoflurane for 30 min at 1 h and 3 h after the successful establishment of the model respectively. At 1, 3 and 5 h after septic shock, MAP and HR were recorded and arterial blood samples were taken for blood gas analysis and determination of plasma concentrations of TNF-α, IL-1, MDA and NO. The left ventricular end-diastolic diameter (LVEDD), left ventricular end-systolic diameter (LVESD), left ventricular fractional shortening (LVFS) and cardiac output (CO) were also detected 5 h after septic shock. The animals were killed after the detection of cardiac function. The lungs were removed for determination of W/D lung weight ratio and Evans blue (EB) content. The tissues from the heart, lung, liver and kidney were taken for detection of NF-kB activity by electrophoretic mobility shift assay (EMSA) ResultsMAP was significantly lower, HR higher, LVEDD, LVESD, LVFS, CO, pH value, PaO2 and PaCO2 lower, and W/D lung weight ratio, EB content, plasma concentrations of TNF-α, IL-1, MDA and NO, and NF-kB activity in the heart, lung, liver and kidney tissues higher in group CLP, SEV, and SEV2 than in group S (P < 0.05). NF-kB activity in the heart, lung, liver and kidney tissues and plasma concentrations of TNF-α, IL-1, MDA and NO were significantly lower in group SEV, than in group CLP and SEV2 ( P < 0.05 ), but no significant differences were found in the other indices between group SEV, and CLP and between group SEV1 and SEV2 ( P > 0.05). Conclusion Inhalation of 2.4% sevoflurane for 30 min 1 h after septic shock can inhibit the systemic inflammatory response slightly, but can not improve the cardiopulmonary function in rats with CLP-induced septic shock.     

七氟醚对感染性休克大鼠全身炎性反应及心肺功能的影响

Objective To investigate the effects of sevoflurane on the systemic inflammatory response and cardiopulmonary function in septic shock rats. Methods Thirty-two SD rats, 8-10 months old, weighing 250-300 g, were randomly divided into 4 groups (n = 8 each): sham operation group (group S), cecal ligation and puncture (CLP) induced septic shock group (group CLP) , sevoflurane I group (group SEV, ) and sevoflurane II group (group SEV,). The abdomen was opened but CLP was not performed in group S. The septic shock was induced by CLP as described by Baker et al. Group SEV, and SEV, inhaled 2.4% sevoflurane for 30 min at 1 h and 3 h after the successful establishment of the model respectively. At 1, 3 and 5 h after septic shock, MAP and HR were recorded and arterial blood samples were taken for blood gas analysis and determination of plasma concentrations of TNF-α, IL-1, MDA and NO. The left ventricular end-diastolic diameter (LVEDD), left ventricular end-systolic diameter (LVESD), left ventricular fractional shortening (LVFS) and cardiac output (CO) were also detected 5 h after septic shock. The animals were killed after the detection of cardiac function. The lungs were removed for determination of W/D lung weight ratio and Evans blue (EB) content. The tissues from the heart, lung, liver and kidney were taken for detection of NF-kB activity by electrophoretic mobility shift assay (EMSA) ResultsMAP was significantly lower, HR higher, LVEDD, LVESD, LVFS, CO, pH value, PaO2 and PaCO2 lower, and W/D lung weight ratio, EB content, plasma concentrations of TNF-α, IL-1, MDA and NO, and NF-kB activity in the heart, lung, liver and kidney tissues higher in group CLP, SEV, and SEV2 than in group S (P < 0.05). NF-kB activity in the heart, lung, liver and kidney tissues and plasma concentrations of TNF-α, IL-1, MDA and NO were significantly lower in group SEV, than in group CLP and SEV2 ( P < 0.05 ), but no significant differences were found in the other indices between group SEV, and CLP and between group SEV1 and SEV2 ( P > 0.05). Conclusion Inhalation of 2.4% sevoflurane for 30 min 1 h after septic shock can inhibit the systemic inflammatory response slightly, but can not improve the cardiopulmonary function in rats with CLP-induced septic shock.     

七氟醚对感染性休克大鼠全身炎性反应及心肺功能的影响

Objective To investigate the effects of sevoflurane on the systemic inflammatory response and cardiopulmonary function in septic shock rats. Methods Thirty-two SD rats, 8-10 months old, weighing 250-300 g, were randomly divided into 4 groups (n = 8 each): sham operation group (group S), cecal ligation and puncture (CLP) induced septic shock group (group CLP) , sevoflurane I group (group SEV, ) and sevoflurane II group (group SEV,). The abdomen was opened but CLP was not performed in group S. The septic shock was induced by CLP as described by Baker et al. Group SEV, and SEV, inhaled 2.4% sevoflurane for 30 min at 1 h and 3 h after the successful establishment of the model respectively. At 1, 3 and 5 h after septic shock, MAP and HR were recorded and arterial blood samples were taken for blood gas analysis and determination of plasma concentrations of TNF-α, IL-1, MDA and NO. The left ventricular end-diastolic diameter (LVEDD), left ventricular end-systolic diameter (LVESD), left ventricular fractional shortening (LVFS) and cardiac output (CO) were also detected 5 h after septic shock. The animals were killed after the detection of cardiac function. The lungs were removed for determination of W/D lung weight ratio and Evans blue (EB) content. The tissues from the heart, lung, liver and kidney were taken for detection of NF-kB activity by electrophoretic mobility shift assay (EMSA) ResultsMAP was significantly lower, HR higher, LVEDD, LVESD, LVFS, CO, pH value, PaO2 and PaCO2 lower, and W/D lung weight ratio, EB content, plasma concentrations of TNF-α, IL-1, MDA and NO, and NF-kB activity in the heart, lung, liver and kidney tissues higher in group CLP, SEV, and SEV2 than in group S (P < 0.05). NF-kB activity in the heart, lung, liver and kidney tissues and plasma concentrations of TNF-α, IL-1, MDA and NO were significantly lower in group SEV, than in group CLP and SEV2 ( P < 0.05 ), but no significant differences were found in the other indices between group SEV, and CLP and between group SEV1 and SEV2 ( P > 0.05). Conclusion Inhalation of 2.4% sevoflurane for 30 min 1 h after septic shock can inhibit the systemic inflammatory response slightly, but can not improve the cardiopulmonary function in rats with CLP-induced septic shock.     

七氟醚对感染性休克大鼠全身炎性反应及心肺功能的影响

Objective To investigate the effects of sevoflurane on the systemic inflammatory response and cardiopulmonary function in septic shock rats. Methods Thirty-two SD rats, 8-10 months old, weighing 250-300 g, were randomly divided into 4 groups (n = 8 each): sham operation group (group S), cecal ligation and puncture (CLP) induced septic shock group (group CLP) , sevoflurane I group (group SEV, ) and sevoflurane II group (group SEV,). The abdomen was opened but CLP was not performed in group S. The septic shock was induced by CLP as described by Baker et al. Group SEV, and SEV, inhaled 2.4% sevoflurane for 30 min at 1 h and 3 h after the successful establishment of the model respectively. At 1, 3 and 5 h after septic shock, MAP and HR were recorded and arterial blood samples were taken for blood gas analysis and determination of plasma concentrations of TNF-α, IL-1, MDA and NO. The left ventricular end-diastolic diameter (LVEDD), left ventricular end-systolic diameter (LVESD), left ventricular fractional shortening (LVFS) and cardiac output (CO) were also detected 5 h after septic shock. The animals were killed after the detection of cardiac function. The lungs were removed for determination of W/D lung weight ratio and Evans blue (EB) content. The tissues from the heart, lung, liver and kidney were taken for detection of NF-kB activity by electrophoretic mobility shift assay (EMSA) ResultsMAP was significantly lower, HR higher, LVEDD, LVESD, LVFS, CO, pH value, PaO2 and PaCO2 lower, and W/D lung weight ratio, EB content, plasma concentrations of TNF-α, IL-1, MDA and NO, and NF-kB activity in the heart, lung, liver and kidney tissues higher in group CLP, SEV, and SEV2 than in group S (P < 0.05). NF-kB activity in the heart, lung, liver and kidney tissues and plasma concentrations of TNF-α, IL-1, MDA and NO were significantly lower in group SEV, than in group CLP and SEV2 ( P < 0.05 ), but no significant differences were found in the other indices between group SEV, and CLP and between group SEV1 and SEV2 ( P > 0.05). Conclusion Inhalation of 2.4% sevoflurane for 30 min 1 h after septic shock can inhibit the systemic inflammatory response slightly, but can not improve the cardiopulmonary function in rats with CLP-induced septic shock.     

七氟醚对感染性休克大鼠全身炎性反应及心肺功能的影响

Objective To investigate the effects of sevoflurane on the systemic inflammatory response and cardiopulmonary function in septic shock rats. Methods Thirty-two SD rats, 8-10 months old, weighing 250-300 g, were randomly divided into 4 groups (n = 8 each): sham operation group (group S), cecal ligation and puncture (CLP) induced septic shock group (group CLP) , sevoflurane I group (group SEV, ) and sevoflurane II group (group SEV,). The abdomen was opened but CLP was not performed in group S. The septic shock was induced by CLP as described by Baker et al. Group SEV, and SEV, inhaled 2.4% sevoflurane for 30 min at 1 h and 3 h after the successful establishment of the model respectively. At 1, 3 and 5 h after septic shock, MAP and HR were recorded and arterial blood samples were taken for blood gas analysis and determination of plasma concentrations of TNF-α, IL-1, MDA and NO. The left ventricular end-diastolic diameter (LVEDD), left ventricular end-systolic diameter (LVESD), left ventricular fractional shortening (LVFS) and cardiac output (CO) were also detected 5 h after septic shock. The animals were killed after the detection of cardiac function. The lungs were removed for determination of W/D lung weight ratio and Evans blue (EB) content. The tissues from the heart, lung, liver and kidney were taken for detection of NF-kB activity by electrophoretic mobility shift assay (EMSA) ResultsMAP was significantly lower, HR higher, LVEDD, LVESD, LVFS, CO, pH value, PaO2 and PaCO2 lower, and W/D lung weight ratio, EB content, plasma concentrations of TNF-α, IL-1, MDA and NO, and NF-kB activity in the heart, lung, liver and kidney tissues higher in group CLP, SEV, and SEV2 than in group S (P < 0.05). NF-kB activity in the heart, lung, liver and kidney tissues and plasma concentrations of TNF-α, IL-1, MDA and NO were significantly lower in group SEV, than in group CLP and SEV2 ( P < 0.05 ), but no significant differences were found in the other indices between group SEV, and CLP and between group SEV1 and SEV2 ( P > 0.05). Conclusion Inhalation of 2.4% sevoflurane for 30 min 1 h after septic shock can inhibit the systemic inflammatory response slightly, but can not improve the cardiopulmonary function in rats with CLP-induced septic shock.     

Beat-to-beat change in "myocardial performance index" related to load

BACKGROUND: This study was designed to assess the relationship of the "myocardial performance index" (MPI) to the beat-by-beat change in pre-load with static or unchanged contractile status. METHODS: Eight anesthetized juvenile pigs were studied using direct measurement of the left ventricular pressure and volume. Transient inflation of a vena cava balloon catheter produced controlled pre-load alterations. Consecutive beats were analyzed, grouped for first, second, third, etc. during the pre-load alteration, and evaluated for the change in MPI during the same contractile status with a controlled pre-load alteration. Two pharmacologic inotropic interventions were also included to generate several myocardial conditions in each animal. RESULTS: MPI demonstrated a strong linear relationship to the pre-load and after-load. MPI increased progressively during decreasing end-diastolic volume, mostly related to changes in ejection time. MPI was observed at the same level for three different myocardial function conditions (all eight animals), with a different relationship between MPI and pre-load noted for each observation. CONCLUSIONS: MPI is strongly load dependent, and can vary widely in value for the same contractile status if the load is varied. The use of this index in critically ill patients should be limited in this respect. Further work is needed to establish the relationship of MPI to load and contractile status.     

The Effect of Nitrofurazone on the Endocrine, Secretory and Spermatogenic Functions of the Rat Testis

Der Einfluß von Nitrofurazon auf die endokrine, sekretorische und spermatogenetische Funktion des Rattenhodens In einer experimentellen Studie wurde an männlichen Ratten der Einfluß der anti-spermatogenetischen Substanz Nitrofurazon unter besonderer Berücksichtigung der Leydig-Zellen, der Sertoli-Zellen und der Keimzellen untersucht. Die Leydigzellfunktion wurde mittels der Serumtestosteronwerte und der Testosteronbildungskapazität von Hodengewebe in vitro gemessen. Die Sertoli-Zellen wurden mittels Licht- und Elektro-nenmikroskopie untersucht; ihre Funktion wurde folgendermaßen gemessen: 1) Testi-kuläre ABP-Synthese-Kapazität in vivo und in vitro; 2) Flüssigkeitssekretion der Sertoli-Zellen innerhalb von 20 Stunden nach der Ligatur der Ductuli efferentes; 3) FSH-Serum-Werte als indirektes Maß der Inhibin-Produktion der Sertoli-Zellen; 4) Untersuchung der Fähigkeit der Verbindungen zwischen den Sertoli-Zellen, Lanthanumpraezipitat festzuhalten als ein Beweis für die Integrität der Blut-Hoden-Schranke. Die Degeneration der Keimzellen wurde mittels Licht- und Elektronenmikroskopie verfolgt. Nitro-furazon wurde in einer Konzentration von 0,1% der Nahrung zugesetzt; verwendet wur-den normale Ratten und solche die vorher bestrahlt waren, um ein Sertoli-Zell-Syndrom auszulösen (Cobald-60, 150 rad, 1,1 rad/sec). Es wird festgestellt, daß Nitrofurazon für alle Keimzellen innerhalb der Blut-Hoden-Schränke schädlich ist. Die am stärksten und am schnellsten eingetrenen Effekte wur-den an den meiotischen Zellstadien beobachtet. 28 Tage nach Nitrofurazonanwendung wurden lediglich Spermatogonien und einige frühe Spermatozyten festgestellt. Bei Sertoli-Ratten kam gelegentlich eine scheinbar intakte Spermatogenese bis zu dem Stadium der elongierten Spermatiden auch nach 28 Tagen Therapie zur Beobachtung. Die Leydig-Zellen wurden nicht geschädigt; das ergab sich aus der erhaltenen bzw. angestie-. genen Kapazität zur Produktion von Testosteron. In den Sertoli-Zellen selbst ergaben sich keine degenerativen Veränderungen; dennoch wurde ein verändertes Erscheinungs-bild der Lipid-Einschlüsse und ein zahlenmäßiger Anstieg der Cytoplasma-Vakuolen festgestellt. Die in vivo-ABP-Produktion zeigte anfangs (nach 2–4 Tagen) einen deutli-chen Abfall bei den Normal- und bei den Sertoli-Ratten. Nach längerer Anwendung von Nitrofurazon wurde die ABP-Produktion wiederhergestellt (Steroli-Ratten) bzw. stieg beachtlich an (Normal-Ratten). Abgesehen von einem vorübergehenden Anstieg am 10. Tag bei Normal-Ratten wurde die Flüssigkeitssekretion der Sertoli-Zellen nicht durch Nitrofurazon beeinflußt. Nach 10 und 28 Tagen Anwendung zeigten die Normal-Ratten ebenso wie die Kontrollen höhere FSH-Werte. Die Sertoli-Ratten hatten FSH-Werte, die den Kastrations-Werten angenähert waren während der Studie; es konnte keinerlei Einfluß von Nitrofurazon festgestellt werden. In dem Stadium der Behandlung, bei dem die Spermatogenese vollständig gehemmt war, erwiesen sich die Leydig-Zellfunktion und verschiedene Parameter der Sertoli-Zell-Funktion als normal. Somit muß unterstellt werden, daß Nitrofurazon seinen hauptsächlichen Einfluß direkt auf die Keimzellen ausübt.     

食管癌手术后肠内营养与肠外营养对肝、肾功能及胃肠功能影响的对比研究

目的探讨食管癌手术后肠内营养与肠外营养两种不同的营养方式对手术后患者肝功能、肾功能及胃肠功能的影响。方法回顾性分析2012年1月至2013年8月广东医学院附属医院124例食管癌手术后患者的临床资料,其中男71例、女53例,年龄31~85岁,平均年龄59.7岁。应用抽签法将124例患者随机分成试验组和对照组。试验组：术后采用经鼻肠管＋胃管行肠内营养,对照组：术后采取静脉滴注营养液。于术前、术后第1 d、第3 d、第7 d晨起未输液前检测外周静脉血丙氨酸转移酶、天冬氨酸转移酶、间接胆红素、直接胆红素、总胆红素、总蛋白、白蛋白等肝功能指标,检测尿素氮、血肌酐等肾功能指标,以及术后肠鸣音恢复时间、第一次排气时间、第一次排便时间等胃肠功能恢复指标。结果肝功能主要指标中丙氨酸转移酶、天冬氨酸转移酶、间接胆红素、直接胆红素、总胆红素术前及术后第1d两组间差异无统计学意义（P〉0.05）,术后第3 d及第7 d试验组低于对照组（P〈0.05）;总蛋白、白蛋白等指标两组差异均无统计学意义（P〉0.05）。试验组患者静脉血尿素氮、肌酐等肾功能指标术前、术后第1d、第3d与对照组比较差异均无统计学意义（P〉0.05）,术后第7 d试验组低于对照组[术后第7 d试验组与对照组尿素氮比较：（4.94±1.07）mmol/L vs.（6.67±2.88）mmol/L;术后第7 d试验组与对照组肌酐比较：（52.50±12.46）μmol/L vs.（68.23±7.61）μmol/L;P〈0.05]。试验组术后肠鸣音恢复时间[（42.00±1.68）h vs.（50.00±1.54）h]、第一次排气时间[（64.15±10.35）h vs.（70.64±14.73）h]、第一次排便时间[（4.20±1.50）d vs.（5.20±1.40）d]等胃肠功能指标较对照组明显缩短（P〈0.05）。结论食管癌手术后肠内营养能促进胃肠功能恢复,对肝、肾功能影响较小,有利于患者术后恢复,减少并发症的发生。     

Effects of pregnancy and childbirth on postpartum sexual function: a longitudinal prospective study

This study was conducted to evaluate the effects of pregnancy and childbirth on postpartum sexual function. Nulliparous, English-literate women were enrolled who had presented to the UNC Hospitals obstetrical practice; these women were 18 years of age and older and at 30–40 weeks gestation. Questionnaires were completed regarding sexual function prior to pregnancy, at enrollment, and at 2, 6, 12, and 24 weeks postpartum. Demographic and delivery data were abstracted from the departmental perinatal database. One hundred and fifty women were enrolled. At 6, 12, and 24 weeks postpartum, 57, 82, and 90% of the women had resumed intercourse. At similar postpartum timepoints, approximately 30 and 17% of women reported dyspareunia; less than 5% described the pain as major. At these times, 39, 60, and 61% of women reported orgasm. Orgasmic function was described as similar to that prior to pregnancy or improved by 71, 77, and 83%. Delivery mode and episiotomy were not associated with intercourse resumption or anorgasmia; dyspareunia was only associated with breast-feeding at 12 weeks (RR=3.36, 95% CI=1.77–6.37). Most women resumed painless intercourse by 6 weeks and experienced orgasm by 12 weeks postpartum. Function was described as similar to or improved over that prior to pregnancy.     

直肠癌手术对男性患者术后排尿功能和性功能的影响

排尿功能和性功能障碍是直肠癌手术治疗后的常见并发症,有许多研究对这一问题进行了探讨,现就这一问题的现状做一综述.     

关于二元连续函数为凸函数的两个条件

推广和改进了连续函数为凸函数的条件。     

胎羊心脏转流对胎羊心功能的影响

目的探讨胎羊心脏转流对不停跳下胎羊心功能的影响。方法孕120-140d母羊8只，共孕9只胎羊，随机分为对照组（n=4）和胎羊体外循环组（CPB组，n=5）。对照组胎羊开胸，不建立体外循环。CPB组建立胎羊心脏转流模型，转流30min。分别于转流前、转流30min、转流结束后1h、2h测胎羊平均动脉压、心率和动脉血气值。观察血肌钙蛋白（TnI）含量的变化，B超检测左、右心室Tei指数和脐动脉搏动指数（PI），观察心肌超微结构变化。结果两组胎羊平均动脉压、心率无显著变化。CPB组胎羊脱离体外循环后出现高碳酸血症和酸中毒，血氧分压无显著变化。对照组胎羊血气值无明显变化。CPB组胎羊左右心室Tei指数、脐动脉PI、血TnI含量均显著大于对照组（P〈0．05）。CPB组胎羊心肌细胞糖原明显减少。结论胎羊心脏转流对胎羊心功能造成损害，心功能不良与胎盘功能不良存在相互影响。     

口腔正畸联合修复治疗先天牙体形态异常的临床效果

目的 探究口腔正畸联合修复治疗先天牙体形态异常的临床效果。方法 选取2018年2月-2023年 2月江夏经济开发区庙山社区卫生服务中心口腔科收治的40例先天牙体形态异常患者为研究对象，依据治 疗方法不同分为单独治疗组和联合治疗组，各20例。单独治疗组采用单独修复治疗，联合治疗组采用口腔 正畸联合修复治疗，比较两组口腔功能、咀嚼功能、语言功能、疼痛程度、焦虑程度、生活质量、临床疗 效、恢复时间及外观满意度。结果 两组治疗后口腔功能、咀嚼功能、语言功能、疼痛、焦虑、生活质量评 分均优于治疗前，且联合治疗组优于单独治疗组（P＜0.05）；联合治疗组治疗总有效率为95.00%，高于单独 治疗组的85.00%（P＜0.05）；联合治疗组口腔功能恢复时间、咀嚼功能恢复时间、语言功能恢复时间均短于 单独治疗组（P＜0.05）；联合治疗组外观满意度为95.00%，高于单独治疗组的75.00%（P＜0.05）。结论 与 单独修复治疗比较，口腔正畸联合修复治疗先天牙体形态异常的临床效果良好，可有改善患者的口腔功能、 咀嚼功能、语言功能，缓解患者的焦虑情绪，减轻正畸治疗对其生活质量的影响，且修复后疼痛较轻、患 者满意度较高。     

关于颈脊髓损害功能评定标准的讨论：（介绍一种新标准—四十分法）

本文综述了国内外常用的几种关于脊髓损害的功能评定方法，并提出了一个新的四十分评定法。此方法用数字描述颈脊髓损害患者的四肢运动功能、感觉和括约肌功能情况，较细致全面地反映病变的程度，把颈脊髓损害所造成的残疾分为四级，与中残联制定的肢体残疾整体功能评定相一致。经实践证明四十分法对颈脊髓损害功能的评定是较为合理简便和准确的。     

Lung function decline is delayed but not decreased in patients with cystic fibrosis and the R117H gene mutation

Background

Patients with cystic fibrosis (CF) experience variable lung disease phenotypes. The R117H mutation is often associated with preserved lung function. Our objective was to compare the rate of lung function decline in patients with the R117H mutation and patients homozygous for the F508del mutation.