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| 1 | Hepatic encephalopathy: Ever closer to its big bang显示文摘Hepatic encephalopathy(HE) is a neuropsychiatric disorder that commonly complicates the course of patients with liver disease. Despite the fact that the syndrome was probably first recognized hundreds of years ago, the exact pathogenesis still remains unclear. Minimal hepatic encephalopathy(MHE) is the earliest form of HE and is estimated to affect more that 75% of patients with liver cirrhosis. It is characterized by cognitive impairment predominantly attention, reactiveness and integrative function with very subtle clinical manifestations. The development of MHE is associated with worsen in driving skills, daily activities and the increase of overall mortality. Skeletal muscle has the ability to shift from ammonia producer to ammonia detoxifying organ. Due to its large size, becomes the main ammonia detoxifying organ in case of chronic liver failure and muscular glutaminesynthase becomes important due to the failing liver and brain metabolic activity. Gut is the major glutamine consumer and ammonia producer organ in the body. Hepatocellular dysfunction due to liver disease, results in an impaired clearance of ammonium and in its interorgan trafficking. Intestinal bacteria, can also represent an extra source of ammonia production and in cirrhosis, small intestinal bacterial overgrowth and symbiosis can be observed. In the study of HE, to get close to MHE is to get closer to its big bang; and from here, to travel less transited roads such as skeletal muscle and intestine, is to go even closer. The aim of this editorial is to expose this road for further and deeper work. | Pablo A Souto Ariel R Marcotegui Lisandro Orbea Juan Skerl Juan Carlos Perazzo | 2016 | World Journal of Gastroenterology2016，22，42： | 6 |
| 2 | Antioxidant role of heme oxygenase-1 in prehepatic portal hypertensive rats显示文摘瞄准:在氧化的肝地位和这项活动和表示上学习胆红素的效果他我在老鼠肝损伤的 oxygenase-1 (HO-1 ) 由 prehepatic 门静脉高血压导致了。方法:Wistar 雄的老鼠,称 200-250 g,在随机被划分成二个组:有调整 prehepatic 门静脉结扎(PPVL ) 导致的 prehepatic 门静脉高血压(PH ) 的一个组和另外的组对应于假冒的操作老鼠。门压力,氧化压力参数,抗氧化剂酶, HO-1 活动和表示和肝的正弦曲线血管舒张被测量。结果:在 PPVL 老鼠,氧化应力被在减少的谷胱甘肽(GSH ) 的反应物质(TBARS ) 内容和减少铺平的 thiobarbituric 酸的显著增加证实。当 HO-1 的活动和表示被提高时,肝抗氧化剂酶,超级氧化物歧化酶(草皮) ,过氧化氢酶(猫) 和谷胱甘肽过氧化物酶(GSH-Px ) 的活动也被减少。胆红素(5 mumol/kg 体重) 的管理在实验的结束前的 24 h 完全阻止了所有这些效果。有 Sn-protoporphyrin IX (Sn-PPIX ) 的预告的处理(100 mug/kg 体重, i.p ) ,一个有势力禁止者惊讶,完全废除了氧化压力并且每氧化象类脂化合物的增加一样在肝 GSH 层次挑起了细微减少。而且,一氧化碳,另一他我分解代谢的产品,在在 PPVL 的肝的区域组织的正弦曲线导致了重要增加。有 Sn-PPIX 的 PPVL 老鼠的预告的处理完全阻止了这效果。结论:这些结果在 prehepatic 门 hypertensive 老鼠在表示上建议 HO-1 的一个有益的角色。 | Soledad Gonzales María Julia Pérez Juan C Perazzo María Luján Tomaro | 2006 | World Journal of Gastroenterology2006，12，26： | 6 |
| 3 | Altered blood-brain barrier permeability in rats with prehepatic portal hypertension turns to normal when portal pressure is lowered显示文摘AIM: To study the blood-brain barrier integrity in prehe-patic portal hypertensive rats induced by partial portal vein ligation, at 14 and 40 d after ligation when portal pressure is spontaneously normalized. METHODS: Adult male Wistar rats were divided into four groups: GroupⅠ: Sham14d, sham operated; GroupⅡ: PH14d, portal vein stenosis; (both groups were used 14 days after surgery); GroupⅢ: Sham40d, Sham operated and GroupⅣ: PH40d Portal vein stenosis (GroupsⅡandⅣused 40 d after surgery). Plasma ammonia, plasma and cerebrospinal fluid protein and liver enzymes concentrations were determined. Trypan and Evans blue dyes, systemically injected, were investigated in hippocampus to study blood-brain barrier integrity. Portal pressure was periodically recorded. RESULTS: Forty days after stricture, portal pressure was normalized, plasma ammonia was moderately high, and both dyes were absent in central nervous system parenchyma. All other parameters were reestablished. When portal pressure was normalized and ammonia level was lowered, but not normal, the altered integrity of blood-brain barrier becomes reestablished. CONCLUSION: The impairment of blood-brain barrier and subsequent normalization could be a mechanism involved in hepatic encephalopathy reversibility, Hemo-dynamic changes and ammonia could trigger blood-brain barrier alterations and its reestablishment. | Francisco Eizayaga Camila Scorticati Juan P Prestifilippo Salvador Romay Maria A Fernandez José L Castro Abraham Lemberg Juan C Perazzo | 2006 | World Journal of Gastroenterology2006，12，9： | 3 |
| 4 | Phase inversion emulsification:current understanding and applications 显示文摘 | PERAZZO A PREZIOSI V GUIDO S | 2015 | Advances in Colloid and Interface Science2015，222，： | 1 |
| 5 | Optimization and Performance of High-resolution Micro-optomechanical Thermal Sensors 显示文摘 | Lai J Perazzo T Shi Z Majumdar A | 1997 | Sensors and Actuators A1997，58，： | 1 |
| 6 | Clastogenicity of Piper cubeba(Piperaceae)seed extract in an in vivo mammalian cell system显示文摘 | JUNQUEIRA A P F PERAZZO F F SOUZA G H B | 2007 | Genetics and Molecular Biology2007，30，3： | 1 |
| 7 | Can ultrasound guidance re-duce the risk of pneumothorax following thoracentesis 显示文摘 | Perazzo A Gatto P Barlascini C | 2014 | J BrasPneumol2014，40，1： | 1 |
| 8 | On the dynamics of a single-bit stochastic-resonance memory device显示文摘 | IBANEZ S A FIERENS P I PERAZZO R P J | 2010 | European Physical Journal B2010，76，1： | 1 |
| 9 | Optimization and performance of high-resolution micro-optomechanical thermal sensors显示文摘 | Lai J Perazzo T Shi Z Majumdar A | 1997 | Sensors and Actuators1997，58，： | 1 |
| 10 | A memory de-vice sustained by noise显示文摘 | FIERENS P I IBANEZ S A Perazzo R P J | 2014 | Physics Letters A2014，374，22： | 1 |
| 11 | Optimization and Performance of High-resolution Micro-optomechanical Thermal Sensors显示文摘 | Lai J Perazzo T Shi Z Majumdar A | 1997 | Sensors and Actuators A1997，58，： | 1 |
| 12 | Time course of axonal myelination in the human brainstem auditory pathway显示文摘 | MOORE J K PERAZZO L M BRAUN A | 1995 | Hear Res1995，87，： | 1 |
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