Search results for "AOP"
showing 10 items of 363 documents
Modifications of the vasopressin and ANP in the rat hypothalamic supraoptic nucleus during and after the physical exercise.
2009
The neurosecretion of oxytocin in the hypothalamic magnocellular nuclei of training rats
2008
Modifications of atrial natriuretic peptide and vasopressin peptides in the rat hypothalamic supraoptic nucleus during resistance training
2010
Many studies have demonstrated the involvement of atrial natriuretic peptide (ANP) and vasopressin (VP) in the homeostasis of body fluids, but few studies have regarded the hypothalamic magnocellular neurosecretory system during physical exercises. The aim of the present immunohistochemical work is to study the activity of ANP and VP secreting neurons of the hypothalamic supraoptic nucleus during and after resistance training. The study was carried out in Wistar rats trained by a physical resistance-type exercise, using a rung ladder and a varying load fastened to the tail of each rat; the exercise lasted 20 min everyday for periods of 15, 30 and 45 days. Animal groups were sacrificed at th…
Effect of the air pressure on electro-Fenton process
2019
Electro-Fenton process is considered a very promising tool for the treatment of waste waters contaminated by organic pollutants refractant or toxic for microorganisms used in biological processes [1-6]. In these processes H2O2 is continuously supplied to an acidic aqueous solution contained in an electrolytic cell from the two-electron reduction of oxygen gas, directly injected as pure gas or bubbled air. Due to the poor solubility of O2 in aqueous solutions, two dimensional cheap graphite or carbon felt electrodes give quite slow generation of H2O2, thus resulting in a slow abatement of organics. In this context, we report here a series of studies [7-9] on the effect of air pressure on the…
Intraoperative cholangiography during laparoscopic cholecystectomy: What role?
2012
Aim: Laparoscopic cholecystectomy has increased the number of iatrogenic lesion of the biliary tree. In this study, we evaluate the role of intra-operative cholangiography in prevention of biliary tree iatrogenic lesions and early identification of choledocolithiasis, during laparoscopic cholecystectomy. Material of study: 169 patients who underwent laparoscopic cholecystectomy, were evaluated by means of intra-operative cholangiography. Patients were divided into two groups basing on the risk to develop biliary tree lithiasis. Discussion: Patients with a higher risk of postoperative complications effectively showed cholangiographic anomalies, including duct stones, dilations, anatomical va…
Dynamic inguinal hernia repair with a 3d fixation-free and motion-compliant implant: a clinical study.
2014
Static solutions for highly motile structures such as the groin seem to represent a procedural incongruence. Another important issue in prosthetic hernia repair is related to the poor quality of tissue ingrowth within conventional flat meshes and plugs. These are all static, passive devices, and thus do not move in synchrony with the natural movements of the groin. In the literature there is a clear understanding of how conventional prostheses used for inguinal hernia repair are incorporated by rigid fibrotic tissue. The term "scar plate" well emphasizes this occurrence. The ingrowth of this kind of stiff fibrotic scar leads to mesh shrinkage and to the reduction of the mesh surface area. T…
Reoperation for persistent or recurrent secondary hyperparathyroidism
2017
Background: Secondary hyperparathyroidism is a common acquired disorder seen in chronic renal failure. Its pathophysiology is mainly due to hyperphosphatemia and vitamin D deficiency and resistance. When medical treatment fails, subtotal and total parathyroidectomy with autotransplantation are the standard procedures, although both are associated with high recurrence rates.Methods and Results: 4 patients experienced persistence and 9 relapse. The first 4 were subjected to reoperation after 6 months for the persistence of symptoms due to the finding of a supernumerary adenomatous gland while the remaining patients at the reoperation showed in 5 cases 2 more glands in over thymic position, an…
Dosaggio intraoperatorio del paratormone nell'iperparatiroidismo terziario
2008
INTRODUZIONE:L’iperparatiroidismo terziario (THP) è una condizione caratterizzata dalla persistenza di elevati valori di paratormone (PTH) e di conseguente ipercalcemia in soggetti affetti da iperparatiroidismo secondario all’insufficienza renale cui il trapianto di rene non riesce a normalizzare i livelli di PTH. E’ caratterizzata da un’iperplasia autonoma di 1-4 ghiandole paratiroidee. L’unica terapia per questi soggetti è l’escissione di quel tessuto paratiroideo ipersecernente per ridurre i livelli di PTH e di calcemia prevenendo così le possibili conseguenze quali lesioni da calcifilassi, osteoporosi, dolori ossei. Nella nostra esperienza troviamo ausilio tecnico molto utile il dosaggi…
A NEW METHOD OF MEASURING INTRAOPERATING BLOOD IOSSES IN NEONATAL SURGERY
1978
At the Institut od Pediatric Surgery and the Institut of Electrotechinique of the UNiversity of Palermo was realized a method based iìon the blood capacity, because of its ionic fractions, on the change of the condictivity of a medium having know and constant electric peculiarity.
Postprocessing algorithm for automated analysis of pelvic intraoperative neuromonitoring signals
2016
Abstract Two dimensional pelvic intraoperative neuromonitoring (pIONM®) is based on electric stimulation of autonomic nerves under observation of electromyography of internal anal sphincter (IAS) and manometry of urinary bladder. The method provides nerve identification and verification of its’ functional integrity. Currently pIONM® is gaining increased attention in times where preservation of function is becoming more and more important. Ongoing technical and methodological developments in experimental and clinical settings require further analysis of the obtained signals. This work describes a postprocessing algorithm for pIONM® signals, developed for automated analysis of huge amount of …