Effects of serum cobalt ion concentration on the liver,kidney and heart in mice

Objective: To investigate the effects of serum cobalt ion concentration on the liver, kidney and heart in mice. Methods: Forty 4‐week‐old male ICR mice were randomly divided into four groups (n= 10 in each group) as follows: Group 1 (HD), high‐dose cobalt chloride group (3.28 mg/kg/day); Group 2 (MD), medium‐dose cobalt chloride group (1.64 mg/kg/day); Group 3(LD), low‐dose group cobalt chloride group (0.82 mg/kg/day); and Group 4(NC), normal control group (vehicle). Cobalt chloride and normal saline were given by intraperitoneal injection once per day for 3 weeks. The body weights of the mice were recorded every 3 days to ensure the correct doses of cobalt chloride. Blood samples for testing were taken at day 4, week 1, week 2 and week 3. Serum cobalt ion concentrations were measured in all samples whereas other serum biochemical variables, including aspartate aminotransferase (AST), aspartate aminotransferase (ALT), blood urea nitrogen (BUN), creatinine (Cr), and creatine kinase (CK) were evaluated at week 1, 2 and 3. After killing the mice at week 3, the heart, liver and kidney were collected for pathological evaluation. Results: Serum cobalt ion concentration was different between the groups. High‐dose cobalt chloride significantly increased AST, ALT and CK concentrations, the concentrations increasing in parallel with treatment duration. Pathological evaluation showed that high‐dose cobalt chloride had toxic effects on the heart and liver; however no significant effect was apparent in the kidney. Conclusion: High‐dose cobalt ion concentration in serum has toxic effects on the heart and liver, but no significant effect on the kidney in mice.     

Protective effects of gallic acid against methotrexate-induced toxicity in rats

Background: Methotrexate, as a chemotherapy drug, can cause chronic liver damage and oxidative stress. Aim of this study was to evaluate the preventive effect of gallic acid (GA) on methotrexate (MTX)-induced oxidative stress in rat liver.

Methods: Twenty-eight male rats were randomly divided into four groups as control, MTX (20?mg/kg, i.p.), MTX?+?GA (30?mg/kg/day, orally) and GA treated. Aspartate aminotransferase (AST), alanine aminotransferase (ALT) and alkaline phosphatase (ALP) were used as biochemical markers of MTX-induced hepatic injury. Malondialdehyde (MDA) and glutathione (GSH) levels and hepatic antioxidant enzymes activities including catalase (CAT), superoxide dismutase (SOD) and glutathione peroxidase (GPx) were assayed in liver tissue. The expression of SOD2 and GPx1 genes were evaluated by real-time RT-PCR and liver histopathology was evaluated by light microscopy.

Results: The result obtained from current study showed that GA remarkably reduced MTX-induced elevation of AST, ALT and ALP and increased MTX-induced reduction in GSH content, GPx, CAT and SOD activity as well as GPx1 and SOD2 gene expressions. Histological results showed that MTX led to liver damage and GA could improve histological changes.

Conclusions: Our results indicate that GA ameliorates biochemical and oxidative stress parameters in the liver of rats exposed to MTX.     

Effects of sevoflurane and isoflurane anesthesia on arterial ketone body ratio and liver function

BACKGROUND: The purpose of this study was to compare the effect on arterial ketone body ratio (AKBR), which indicates hepatic mitochondrial energy charge in relation to hepatic blood flow, and liver function test (serum levels of liver enzymes) between sevoflurane and isoflurane anesthesia. METHODS: Serum levels of aspartate aminotransferase (AST), alanine aminotransferase (ALT), total bilirubin (TBil), alkaline phosphatase (ALP), gamma-glutamyl transpeptidase (GTP), and lactate dehydrogenase (LDH) were measured before and 1,2,3,7, and 14 days after anesthesia in each of 60 patients receiving either sevoflurane or isoflurane anesthesia for neurosurgery (tumor resection). In 13 patients of both groups, arterial concentrations of acetoacetate and 3-hydroxybutyrate were also measured before, during and after (up to 12 h) anesthesia and the AKBR was calculated. RESULTS: AST, ALT and GTP increased, peaking 7 days after anesthesia, especially in the isoflurane group. There was a significantly greater number of patients with abnormal AST and ALT values in the isoflurane group than in the sevoflurane group. The increase of TBil had its peak 1 day after anesthesia in both groups. AKBR decreased after anesthesia induction and recovered to the control value 12 h after anesthesia in both groups. There was no difference between the two anesthetic groups in AKBR. CONCLUSION: Isoflurane induced an elevation of serum levels of liver enzymes more frequently than did sevoflurane 3 to 14 days after anesthesia, while AKBR until 12 h after anesthesia did not show any significant difference between sevoflurane and isoflurane anesthesia.     

血清钴离子浓度升高对小鼠肝、肾、心脏功能与形态的影响

目的 探讨血清钴离子浓度升高对小鼠肝、肾、心脏功能与形态的影响.方法 将断乳1周的40只雄性ICR小鼠(美国癌症研究所Institute of Cancer Researcch分送各国饲养实验,各国称为ICR小鼠)随机分成4组,即低剂量组、中剂量组、高剂量组和空白对照组,每组10只.实验组小鼠每天腹腔内分别注射剂量为0.82 mg/kg、1.64 mg/kg和3.28 mg/kg氯化钴溶液(CoCl2);空白对照组腹腔注射灭菌双蒸水.分别于注射后第4天、1、2、3周从每组小鼠眼球采血测定血清中钴离子含量,第1、2、3周测定血液生化指标[谷草转氨酶(AST)、谷丙转氨酶(ALT)、血尿素氮(BUN)、肌酐(Cr)、肌酸激酶(CK)]并作各组间的比较.第3周采用摘眼球放血方式将小鼠全部处死取心、肝、肾做病理切片及电镜观察.结果 注射氯化钴溶液后第4天、1、2、3周分别测量血清中钴离子含量,结果显示随着注射剂量的增加,小鼠血清中钴离子含量相应增加,实验组之间比较差异有统计学意义.术后第1、2、3周分别测量血液生化指标,结果显示低、中剂量组AST、ALT、BUN、Cr、CK活性正常,高剂量组AST、ALT、CK与空白对照组比较,随时间的延长氯化钴对肝、心的毒性影响有加重趋势.病理切片及电镜观察显示:各实验组的心、肝出现坏死、凋亡等病理性改变,但肾脏无毒性变化.结论 高剂量的血清钴离子浓度具有肝毒性与心脏毒性,但肾毒性不显著;低、中剂量对肝、心、肾功能与形态无明显影响.     

血清钴离子浓度升高对小鼠肝、肾、心脏功能与形态的影响

目的 探讨血清钴离子浓度升高对小鼠肝、肾、心脏功能与形态的影响.方法 将断乳1周的40只雄性ICR小鼠(美国癌症研究所Institute of Cancer Researcch分送各国饲养实验,各国称为ICR小鼠)随机分成4组,即低剂量组、中剂量组、高剂量组和空白对照组,每组10只.实验组小鼠每天腹腔内分别注射剂量为0.82 mg/kg、1.64 mg/kg和3.28 mg/kg氯化钴溶液(CoCl2);空白对照组腹腔注射灭菌双蒸水.分别于注射后第4天、1、2、3周从每组小鼠眼球采血测定血清中钴离子含量,第1、2、3周测定血液生化指标[谷草转氨酶(AST)、谷丙转氨酶(ALT)、血尿素氮(BUN)、肌酐(Cr)、肌酸激酶(CK)]并作各组间的比较.第3周采用摘眼球放血方式将小鼠全部处死取心、肝、肾做病理切片及电镜观察.结果 注射氯化钴溶液后第4天、1、2、3周分别测量血清中钴离子含量,结果显示随着注射剂量的增加,小鼠血清中钴离子含量相应增加,实验组之间比较差异有统计学意义.术后第1、2、3周分别测量血液生化指标,结果显示低、中剂量组AST、ALT、BUN、Cr、CK活性正常,高剂量组AST、ALT、CK与空白对照组比较,随时间的延长氯化钴对肝、心的毒性影响有加重趋势.病理切片及电镜观察显示:各实验组的心、肝出现坏死、凋亡等病理性改变,但肾脏无毒性变化.结论 高剂量的血清钴离子浓度具有肝毒性与心脏毒性,但肾毒性不显著;低、中剂量对肝、心、肾功能与形态无明显影响.     

血清钴离子浓度升高对小鼠肝、肾、心脏功能与形态的影响

目的 探讨血清钴离子浓度升高对小鼠肝、肾、心脏功能与形态的影响.方法 将断乳1周的40只雄性ICR小鼠(美国癌症研究所Institute of Cancer Researcch分送各国饲养实验,各国称为ICR小鼠)随机分成4组,即低剂量组、中剂量组、高剂量组和空白对照组,每组10只.实验组小鼠每天腹腔内分别注射剂量为0.82 mg/kg、1.64 mg/kg和3.28 mg/kg氯化钴溶液(CoCl2);空白对照组腹腔注射灭菌双蒸水.分别于注射后第4天、1、2、3周从每组小鼠眼球采血测定血清中钴离子含量,第1、2、3周测定血液生化指标[谷草转氨酶(AST)、谷丙转氨酶(ALT)、血尿素氮(BUN)、肌酐(Cr)、肌酸激酶(CK)]并作各组间的比较.第3周采用摘眼球放血方式将小鼠全部处死取心、肝、肾做病理切片及电镜观察.结果 注射氯化钴溶液后第4天、1、2、3周分别测量血清中钴离子含量,结果显示随着注射剂量的增加,小鼠血清中钴离子含量相应增加,实验组之间比较差异有统计学意义.术后第1、2、3周分别测量血液生化指标,结果显示低、中剂量组AST、ALT、BUN、Cr、CK活性正常,高剂量组AST、ALT、CK与空白对照组比较,随时间的延长氯化钴对肝、心的毒性影响有加重趋势.病理切片及电镜观察显示:各实验组的心、肝出现坏死、凋亡等病理性改变,但肾脏无毒性变化.结论 高剂量的血清钴离子浓度具有肝毒性与心脏毒性,但肾毒性不显著;低、中剂量对肝、心、肾功能与形态无明显影响.     

门冬氨酸鸟氨酸对肝硬化肝癌术后肝功能的影响

目的：观察门冬氨酸鸟氨酸（LOLA）对肝癌合并肝硬化半肝切除术后肝功能的影响。方法：通过随机、对照的方法,将66例肝癌合并肝硬化行半肝切除患者分为2组,仅治疗组于术后1～7 d静脉应用LOLA。全部患者分别在术前及术后1、3、5、7、10、14 d抽外周静脉血检查谷丙转氨酶（ALT）、谷草转氨酶（AST）、总胆红素（TB）、直接胆红素（DB）。结果：治疗组术后1、3、5 d ALT明显低于对照组（P〈0.05）,术后3、5 d AST明显低于对照组（P〈0.05）。治疗组术后7 d ALT恢复正常的比率高于对照组。LOLA对术后TB、DB无影响。两组术后肝功能不全的发生率无差异（P=0.557）。结论：LOLA能促进肝癌肝硬化半肝切除术后肝脏功能的早期恢复。     

Liver progenitor cells activated after 30% small-for-size liver transplantation in rats: a preliminary study

AIM: To explore whether liver progenitor cells were activated after 30% small-for-size liver transplantation in rats. METHODS: 200 rats were arranged in three groups: 70% partial hepatectomy (PH), whole liver transplantation (WLT), and 30% liver transplantation (SLT) group. On days 1, 2, 3, 5, 7 after operation, 6 rats were sacrificed in each group at each time. One week survivals were analyzed; while liver injury and regeneration index were estimated by serum ALT AST, H&E staining and proliferating cell nuclear antigen index. The oval cell markers, including CD90 and OV6, were detected in liver sections by immunohistochemistry. RESULTS: The 50% survival rate of the SLT group was significantly lower than those of the PH and the WLT groups. At each time after operation, the serum ALT and AST were much higher in the SLT group. Compared with the PH group on days 1, 2, and 3 postoperatively, the PCNA indices were lower among the SLT group. OV-6 positive and CD90 positive cells were detected in the SLT group from day 2 postoperatively. These progenitor cells were first dispersed in the liver but restricted to the periportal region over the following days. CONCLUSION: Liver progenitor cell activation after SLT may be related to the liver dysfunction caused by a small-for-size graft.     

Ischemic preconditioning in deceased donor liver transplantation: a prospective randomized clinical trial of safety and efficacy.

Ischemic preconditioning (IPC) has the potential to decrease graft injury and morbidity after liver transplantation. We prospectively investigated the safety and efficacy of 5 minutes of IPC induced by hilar clamping in local deceased donor livers randomized 1:1 to standard (STD) recovery (N = 28) or IPC (N = 34). Safety was assessed by measurement of heart rate, blood pressure, and visual inspection of abdominal organs during recovery, and efficacy by recipient aminotransferases (aspartate aminotransferase [AST] and alanine aminotransferase [ALT], both measured in U/L), total bilirubin, and international normalized ratio of prothrombin time (INR) after transplantation. IPC performed soon after laparotomy did not cause hemodynamic instability or visceral congestion. Recipient median AST, median ALT, and mean INR, in STD vs. IPC were as follows: day 1 AST 696 vs. 841 U/L; day 3 AST 183 vs. 183 U/L; day 1 ALT 444 vs. 764 U/L; day 3 ALT 421 vs. 463 U/L; day 1 INR 1.7 +/- .4 vs. 2.0 +/- .8; and day 3 INR 1.3 +/- .2 vs. 1.4 +/- .3; all P > .05. No instances of nonfunction occurred. The 6-month graft and patient survival STD vs. IPC were 82 vs. 91% and median hospital stay was 10 vs. 8 days; both P > .05. In conclusion, deceased donor livers tolerated 5 minutes of hilar clamping well, but IPC did not decrease graft injury. Further trials with longer periods of preconditioning such as 10 minutes are needed.     

急性胆道梗阻肝脏损伤的实验研究

目的:探讨大鼠急性胆道梗阻后肝脏损伤的变化.方法:雄性Wistar大鼠,随机分为实验组(胆总管结扎)和对照组(假手术),观察术后不同时间点动物的一般情况、黄疸、生化指标和肝脏病理学变化.结果:对照组术后各项观察指标均无明显异常.实验组术后出现体质量降低、活动减少和明显的黄疸,但3d后均有所改善;术后血清总胆红素(TBIL)和直接胆红素(DBIL)水平明显升高,3d达到高峰,之后缓慢降低;术后谷丙转氨酶(ALT)迅速增加,1～2 d达到高峰,3d后迅速下降;碱性磷酸酶( ALP)于术后2d达到高峰,3d后逐渐下降;术后肝组织Metavir评分逐渐增加,3d时开始出现明显胶原纤维增生.结论:肝脏急性损伤期在急性胆道梗阻后1周内期间2～3 d进展达高峰,并出现纤维化.     

三维重建技术联合腹腔镜肝切除术治疗86例原发性肝癌的临床研究

目的 分析三维重建技术在腹腔镜肝切除术中的应用效果。 方法 回顾性分析湖北医药学院附属十堰市太和医院2017年7月至2019年7月收治的86例原发性肝癌患者临床资料。根据是否行三维重建技术将患者分为观察组（n=44）和对照组（n=42）,记录并比较两组手术患者的一般情况、手术时间、术中出血量、平均住院时间、术后并发症情况。在术前及术后7 d检测并比较两组患者血清谷丙转氨酶（ALT）、谷草转氨酶（AST）、总胆红素（TBIL）、白蛋白（ALB）和甲胎蛋白（AFP）含量变化。结果 观察组手术时间、术中出血量、术后住院时间均优于对照组,差异均具有统计学意义（P＜0.05）;两组患者术前ALT、AST、TBIL、AFP、ALB含量均无明显差异（P＞0.05）。观察组术后7 d ALT、AST、TBIL、AFP含量均低于对照组术后,ALB含量高于对照组术后,且差异均具有统计学意义（P＜0.05）。观察组术后并发症较对照组显著降低（P＜0.05）。 结论 三维重建技术应用于腹腔镜肝切除术能够缩短手术时间,减少术中出血量,降低住院时间,改善肝功能,减少术后并发症发生,从而加快患者恢复,确保手术安全,值得在地市级三甲医院推广及应用。     

Liver function after sevoflurane or isoflurane anaesthesia in neurosurgical patients

Purpose

Although both sevoflurane and isoflurane are thought to be less hepatotoxic than halothane or enflurane, recent case reports have described liver injury after sevoflurane or isoflurane anaesthesia. There are no studies comparing liver function after sevoflurane or isoflurane anaesthesia. The purpose of this study was to compare serum liver enzyme concentrations in patients receiving either sevoflurane or isoflurane anaesthesia prospectively.

Methods

Ninety patients scheduled for elective neurosurgery were studied. Serum concentrations of aspartame aminotransferase (AST), alanine aminotransferase (ALT), total bilirubin (TBil), alkaline phosphatase (ALP), γ- glutamyl transpeptidase (GTP), and lactate dehydrogenase (LDH) were measured before and, 1, 2, 3, 7, and 14 days after either sevoflurane (45 patients) or isoflurane (45 patients) anaesthesia.

Results

AST ALT and GTP increased peaking seven days after anaesthesia, especially in the isoflurane group. The numbers of patients with abnormal values in AST and ALT were not different in the isoflurane from that in the sevoflurane group. The increase in TBil peaked one day after anaesthesia in both groups.

Conclusion

Even in a small number of patients, isoflurane induced an elevation of serum levels of liver enzymes more frequently than did sevoflurane three to 14 days after anaesthesia.     

3D腹腔镜Glisson蒂横断式肝切除术治疗肝癌的临床研究

目的:探讨3D腹腔镜Glisson蒂横断式肝切除术治疗肝癌的效果及对术后胃肠激素、血小板与淋巴细胞比值(PLR)、中性粒细胞与淋巴细胞比值(NLR)的影响。方法:选取2016年9月—2019年9月收治的肝癌患者89例,依照治疗方案不同分为3D腹腔镜组(n=45)和开腹组(n=44),分别予以3D腹腔镜Glisson蒂横断式肝切除术和开腹Glisson蒂横断式肝切除术。比较两组手术情况、并发症,术前及术后1 d、3 d总胆红素(TBil)、谷草转氨酶(AST)、谷丙转氨酶(ALT)、血PLR、NLR,术前、术后3 d及术后1周血清胃动素(MTL)、胃泌素(GAs)水平。结果:3D腹腔镜组术中出血量较开腹组低,术后胃肠道恢复、肛门排气、进食、排便、拔管、住院时间较开腹组短(P<0.05),两组术后并发症发生率对比,差异无统计学意义(P>0.05)。应用重复测量设计的方差分析,两组不同时间点血清TBil、AST、ALT、MTL、GAs及血PLR、NLR水平差异均有统计学意义(P<0.05);3D腹腔镜组与开腹组血清TBil、AST、ALT、MTL、GAs及血PLR、NLR水平差异均有统计学意义(P<0.05),3D腹腔镜组血清TBil、AST、ALT与血PLR、NLR水平较开腹组低,血清MTL、GAs水平较开腹组高,对机体肝功能、胃肠功能影响相对较小,应激反应相对较轻;3D腹腔镜组与开腹组血清TBil、AST、ALT、MTL、GAs及血PLR、NLR水平变化趋势差异有统计学意义(P<0.05)。结论:应用3D腹腔镜Glisson蒂横断式肝切除术治疗肝癌可减轻手术创伤,促进术后恢复,且对机体肝功能、胃肠功能影响小,应激反应轻。     

间断低氧预适应对大鼠肝切除术后残余肝脏再生的影响

目的 研究间断低氧预适应对大鼠肝切除术后残余肝脏再生的影响。方法 54只SD大鼠用SPSS软件随机分为3组：假手术组（SO组）、肝部分切除组（PH组）和间断低氧预适应组（IHP组）。PH组切除大鼠的左叶和中叶肝脏,约占70％。IHP组大鼠每日在低氧环境下暴露1h,连续进行1周后行肝切除术。于术后第1、3、5天每组随机选取6只SD大鼠处死进行检测。称取肝脏重量,计算肝脏再生度和再生指数。取下腔静脉血用全自动生化分析仪检测血清谷丙转氨酶（ALT）和谷草转氨酶（AST）水平。采用免疫组化方法检测残余肝组织增生细胞核抗原（PCNA）阳性率。结果 IHP组术后第1天和第3天残余肝脏的再生度和再生指数明显高于PH组（P＜0.05）,而术后第5天两组差异无统计学意义。虽然IHP组和PH组大鼠术后血清ALT和AST水平开始下降,但二者均明显高于SO组,且术后第1天IHP组明显低于PH组（P＜0.05）。术后各个时间点IHP组残余肝脏的PCNA阳性细胞比例明显高于SO组和PH组（P＜0.05）。结论 间断低氧预适应能够在一定程度上防止肝切除术后残余肝组织中肝细胞破坏,并且能促进肝脏的早期再生。但其机制需进一步研究。     

Changes in liver function tests after laparoscopic cholecystectomy: not so rare, not always ominous

The incidental findings of increased alanine aminotransferase (ALT) and aspartate amino transferase (AST) after uneventful laparoscopic cholecystectomy (LC) prompted us to investigate the incidence and the clinical significance of this phenomenon. Changes in liver function test after LC (n = 55) were compared with those after OC (n = 16). Liver function tests were obtained preoperatively and postoperatively on days 1, 2, and 7. All of the patients fulfilled the selection criteria: normal preoperative liver function test and no endoscopic retrograde cholangiopancreatography, common bile duct exploration, or postoperative biliary complications (injury, infection, or obstruction). Converted cholecystectomies were also excluded. During LC, the intra-abdominal pressure was maintained within the conventional range of 14 to 15 mm Hg. ALT had doubled in the first 48 hours from the preoperative mean in 58.2 per cent in LC patients versus only 6.3 per cent in the OC group. AST doubled from the preoperative mean value in 38.2 per cent in the LC group versus only 6.3 per cent in the OC group. By the 7th postoperative day, the enzymes returned to the preoperative values in both the LC and the OC group. In many instances, a significant increase in ALT and AST blood levels occurred after uneventful LC. The phenomenon is transient as these enzymes returned to normal value within 7 days. These changes are clinically silent in patients with a normal liver function.     

Transient Liver Dysfunction after Laparoscopic Gastrectomy for Gastric Cancer Patients

Introduction The effect of laparoscopic surgery under CO₂ pneumoperitoneum on liver function is not clear. The aim of this study was to clarify whether laparoscopy-assisted distal gastrectomy (LADG) is associated with changes in liver function compared with open distal gastrectomy (ODG). Methods A total of 205 patients who underwent LADG (n = 147) or ODG (n = 58) between January 1994 and April 2004 were included in this study. Liver function tests—aspartate aminotransferase (AST), alanine aminotransferase (ALT), albumin, total bilirubin—were examined before surgery and at 1, 3, and 7 days after surgery. The postoperative clinical course was compared between the two groups. Results AST levels on day 1 and ALT levels on days 1 and 3 were significantly higher in the LADG group. Albumin levels showed a marked decrease after operation in both groups, but the level recovered more rapidly in the LADG group than in the ODG group, showing significant differences on days 3 and 7. The total bilirubin levels remained unchanged from baseline. The postoperative complication rate was similar in the two groups, although 3 LADG patients among the 27 patients with liver disease suffered severe enteritis. Conclusions Transient liver dysfunction was documented in patients after laparoscopic gastrectomy under CO₂ pneumoperitoneum.     

Case report: Fatal hepatic failure after aortic valve replacement and sevoflurane exposure

PURPOSE: To report a case of lethal hepatotoxicity possibly caused by sevoflurane. CLINICAL FEATURES: A 76-yr-old woman with a history of four previous minor surgical procedures developed acute liver failure after general anesthesia with sevoflurane, sufentanil and propofol for aortic valve replacement. After an uneventful procedure the patient was extubated 4.5 hr after surgery. On the second postoperative day, serum alanine aminotransferase (ALT) and aspartate aminotransferase (AST) increased. On the third postoperative day liver failure occurred, ALT peaked at 10504 UxL(-1) and AST at 15516 UxL(-1), and coagulopathy with an international normalized ratio of 4.6 developed. Liver transplantation was considered but rejected as a therapeutic option. The patient died three days after the operation in multiple organ failure triggered by hepatic failure. Other possible causes for liver failure were excluded. CONCLUSIONS: Sevoflurane hepatitis as a cause for liver failure may be implicated in this patient undergoing valve surgery. Unlike other halogenated anesthetic drugs, sevoflurane is not metabolized to hepatotoxic trifluoroacetyl proteins. However, compound A may react with proteins and may be transformed into antigenic material. We suggest that all halogenated anesthetics may be implicated with acute liver injury.     

线粒体型天门冬氨酸氨基转移酶在大鼠肝移植术后的变化意义

目的 探讨线粒体型天门冬氨酸氨基转移酶(m-ASI)以及m-AST与天门冬氨酸氨基转移酶(AST)比值在大鼠自体原位肝移植手术中的变化意义.方法 采用大鼠门静脉灌注的自体原位肝移植模型,A组:自体原位肝移植组;B组:正常大鼠假手术对照组.测定两组大鼠术后各时间段血清中m-AST、AST及ALT,计算出m-AST/AST...     

肝切除围手术期使用地塞米松保护肝功能的必要性及可行性研究

目的 探讨肝切除围手术期使用地塞米松保护肝功能的必要性及可行性.方法 以本科施行肝切除术的病人为研究对象,分成治疗组131例(使用地塞米松)和对照组125例(未用地塞米松),治疗组于手术当天,麻醉前静推10 mg地塞米松,术后1～3 d,每天静推10 mg地塞米松.在肝切除术前后不同时期检测血清丙氨酸转氨酶(ALT)、天门冬氨酸转氨酶(AST)、白蛋白(ALb)和总胆红素(TBIL),进行统计学分析.结果 术后1、3、7 d,治疗组的AST、ALT、TBIL均不同程度的低于对照组,术后3、7 d有统计学意义(P＜0.05).治疗组的胸水、腹水等的并发症发生率低于对照组,但无统计学意义.结论 在肝切除围手术期使用地塞米松对肝脏具有保护作用.     

选择性与全肝人肝血流阻断法在肝切除术应用的随机对照研究

目的 比较3种入肝血流阻断方法,即Pringle法(A组)、半肝阻断法(B组)、单纯门静脉阻断法(C组)在肝切除术中的应用效果.方法 采用随机对照研究的方法,将行肝切除术的患者随机分为3组,采用不同的阻断方法,对3组手术前后肝功能变化及术中出血及术后并发症进行比较.结果 B组中1例因分离单侧肝门困难而改用Pringle法;179例患者无围手术期死亡;术中出血量3组间较差异无统计学意义;术后第1、3、7天B组和C组的肝功能改变(总胆红素、丙氨酸氨基转移酶及蛋白水平等)组间比较无统计学意义,两组与A组比较有统计学意义.结论 3种入肝血流阻断方法在切肝过程中,控制术中出血效果满意,切肝过程中采用选择性入肝血流阻断较Pringle法对术后肝功能损伤较小.