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1.
Rom J Morphol Embryol ; 51(4): 775-7, 2010.
Artículo en Inglés | MEDLINE | ID: mdl-21103641

RESUMEN

AIM: To present two cases of papillary carcinoma of the thyroglossal duct cyst (TDC) and to report their management. PATIENTS AND METHODS: Two patients, a 47-year-old woman and a 60-year-old man, were operated in 2006 and 2008 in the Department of Digestive and Metabolic Surgery of the "Jean Verdier" Hospital. RESULTS: The diagnosis of papillary carcinoma was established after the pathological examination carried out on the thyroglossal duct cyst, after its complete surgical excision. A total thyroidectomy followed by a treatment by radioactive iodine and a substitutive hormonal therapy were carried out in the second time for one of the two patients. For the other patient, a total thyroidectomy followed by a substitute hormonal therapy, were achieved. The evolution was favorable, with a follow-up of four years for the first patient and two years for the second one. DISCUSSION: Total thyroidectomy after the complete excision of the cyst is currently the recommended treatment for the papillary carcinoma of the TDC. It was shown that a latent thyroid cancer could develop even 15 years after the initial excision of the thyroglossal cyst. The treatment is curative in 95% of the cases. CONCLUSIONS: Current treatment of papillary carcinoma of the thyroglossal duct cyst is well codified, allowing an excellent prognostic.


Asunto(s)
Carcinoma Papilar/patología , Quiste Tirogloso/patología , Neoplasias de la Tiroides/patología , Carcinoma Papilar/terapia , Femenino , Humanos , Radioisótopos de Yodo/uso terapéutico , Masculino , Persona de Mediana Edad , Quiste Tirogloso/terapia , Hormonas Tiroideas/uso terapéutico , Neoplasias de la Tiroides/terapia , Tiroidectomía
2.
Obes Surg ; 29(4): 1442-1444, 2019 04.
Artículo en Inglés | MEDLINE | ID: mdl-30747391

RESUMEN

BACKGROUND: Severe post-operative malnutrition (SM) is a dreaded complication after gastric bypass often related to the short bowel syndrome consecutive limb length mismeasurement or intestinal resections. Patients with rapid weight loss or malnutrition can experience liver failure with cirrhosis and require liver transplantation (LT). Malnutrition can constitute a contraindication to LT since it negatively impacts on postoperative morbidity. RYGB reversal is an effective option to consider when nutritional support has failed. We describe the performance of a RYGB reversal in a pre-LT setting. MATERIAL AND METHODS: A 36-year-old patient with morbid obesity (weight, 140 kg; BMI, 50.1 kg/m2) underwent a RYGB 9 years ago. She presented with 85 kg weight loss (i.e., 60.7% total body weight loss) associated with SM and hepatocellular insufficiency. LT was considered but contraindicated because of SM. An intensive nutritional support was attempted but failed and the RYGB reversal was recommended. RESULTS: Laparoscopic exploration revealed ascites, cirrhosis, and splenomegaly. The whole small bowel measurement revealed a short gut. Alimentary, biliary, and common channel limb lengths were 250 cm, 150 cm, and 30 cm long. The alimentary limb was stapled off the gastric pouch and the gastrojejunostomy was resected. After resection of the gastrojejunostomy, linear stappled gastro-gastrostomy and jéjuno-jejunostomy were performed to restore the normal anatomy. At 1 year, malnutrition was resolved and the cirrhosis was stabilized. CONCLUSION: Reversal to normal anatomy appeared effective and safe in this setting but must be considered only after failure of intensive medical management. Careful bowel measurement is mandatory to prevent patients from this complication.


Asunto(s)
Derivación Gástrica/efectos adversos , Cirrosis Hepática , Desnutrición , Complicaciones Posoperatorias , Adulto , Femenino , Humanos , Cirrosis Hepática/etiología , Cirrosis Hepática/cirugía , Desnutrición/etiología , Desnutrición/cirugía , Obesidad Mórbida/cirugía , Complicaciones Posoperatorias/fisiopatología , Complicaciones Posoperatorias/cirugía , Reoperación
3.
Hernia ; 23(4): 767-781, 2019 08.
Artículo en Inglés | MEDLINE | ID: mdl-30887379

RESUMEN

PURPOSE: This study examined patient-related outcome measures (PROMs) after repair of ventral primary or incisional hernias using Symbotex™ composite mesh (SCM), a novel three-dimensional collagen-coated monofilament polyester textile. METHODS: Pre-operative, peri-operative, and post-operative data were obtained from the French "Club Hernie" registry with 12- and 24-month follow-up. RESULTS: One-hundred consecutive patients (mean age 62.0 ± 13.7; 51% female) underwent repair of 105 hernias: primary (39/105, 37.1%, defect area 5.2 ± 5.6 cm2) and incisional (66/105, 62.9%, 31.9 ± 38.7.8 cm2). The mean BMI was 29.7 (± 5.6 kg/m2). American Society of Anesthesiologists classifications were I 39.4%, II 37.4% and III 23.2%. 75% had risk factors for healing and/or dissection. Of 38 primary repairs, 37 were completed laparoscopically (combined approach n = 1), and of 62 incisional hernia repairs, 40 were completed laparoscopically, and 20 by open repair (combined approach n = 2). Laparoscopic was quicker than open repair (36.2 ± 23.5 min vs. 67.4 ± 25.8, p < 0001). Before surgery, 86.3% of hernias were reported to cause discomfort/pain or dysesthesia. At 24 months (93 of 100 patients), 91 (97.8%) reported no lump and 81 (87.1%) no pain or discomfort. Of 91 patients, 86 (94.5%) rated their repair "good" or "excellent." There were nine non-serious, surgeon-detected adverse events (ileus, n = 3; seroma, n = 6) and one hernia recurrence (6-12 months). CONCLUSIONS: Compared to baseline, open and laparoscopic surgery improved PROMs 24 months after primary and incisional hernia repair. Minimal complications and recurrence support the long-term efficacy of SCM.


Asunto(s)
Materiales Biocompatibles Revestidos/uso terapéutico , Hernia Ventral/cirugía , Herniorrafia/métodos , Hernia Incisional/cirugía , Tereftalatos Polietilenos/uso terapéutico , Mallas Quirúrgicas , Adulto , Anciano , Femenino , Humanos , Laparoscopía/métodos , Masculino , Persona de Mediana Edad , Evaluación de Resultado en la Atención de Salud , Poliésteres , Recurrencia , Factores de Riesgo , Seroma/etiología
4.
Hernia ; 20(5): 711-22, 2016 10.
Artículo en Inglés | MEDLINE | ID: mdl-27278220

RESUMEN

PURPOSE: A case-control study was performed to compare laparoscopic ventral hernia repair (LVHR) using the Ventralight ST™ lightweight surgical mesh with LVHR using other types of mesh. METHODS: Adult patients undergoing intraperitoneal implantation of Ventralight ST™ during LVHR (Ventralight ST™ group; VG) over a 2-year period (2011-2013) were identified from the prospective French Hernia-Club registry. Patients undergoing elective LVHR using other types of intraperitoneal mesh in the first semester of 2013 formed the control group (CG). Patient, hernia and surgical characteristics, and postoperative outcomes after 8 days, 1 month, and 1 year were compared between the two groups. RESULTS: The VG comprised 90 LVHRs in 85 patients, and the CG 86 LVHRs in 81 patients. Patient, hernia and surgical characteristics were similar between the two groups, apart from the method of mesh fixation and the number of procedures involving fascial closure. A low rate of minor complications was observed in both groups at 1 month [4.4 % (VG) and 2.3 % (CG)], and the level of postoperative pain was similar in the two groups at Day 8 and 1 month. After 1 year, no complications, recurrences or cases of chronic pain had occurred in either group, and Quality-of-Life outcomes were similar. Patients rated their procedure as excellent or good in 96 % (VG) and 92 % (CG) of cases. CONCLUSIONS: Ventralight ST™ mesh is effective and well tolerated in LVHR, producing very low complication and recurrence rates in the short and medium term. The results are comparable to those achieved with other types of mesh.


Asunto(s)
Hernia Ventral/cirugía , Herniorrafia/métodos , Mallas Quirúrgicas , Adyuvantes Inmunológicos/administración & dosificación , Anciano , Estudios de Casos y Controles , Materiales Biocompatibles Revestidos , Femenino , Estudios de Seguimiento , Herniorrafia/efectos adversos , Humanos , Ácido Hialurónico/administración & dosificación , Laparoscopía , Masculino , Persona de Mediana Edad , Recurrencia , Sistema de Registros
5.
Hernia ; 9(2): 125-30, 2005 May.
Artículo en Inglés | MEDLINE | ID: mdl-15602625

RESUMEN

In a prospective study, 115 patients with a mean age of 55 years, presenting a primary or recurrent hernia were treated with a beta glucan-coated polypropylene mesh (Glucamesh). Fifty-eight underwent a Lichtenstein procedure and 57 had a laparoscopic procedure (TEP/TAPP). Oat beta glucan is an entirely natural plant product that eliminates the risk of viral or prion contamination associated with the use of collagen of animal origin. The beta glucan coated mesh is of lower weight and profile compared to a typical polypropylene implant. Preliminary results have been previously reported. With a mean follow up of 2 years, patients were evaluated by a physician and or a standardized questionnaire in order to evaluate the incidence rate of recurrence discomfort and residual chronic pain. One hundred nine (94.7%) questionnaires were returned. Of these, 104 (90.4%) were complete and analyzed. Mean follow up was 24 months (21-27). Two years after operation the recurrence rate was 1.9% (two cases: one in each group); 98 patients (94.2%) had no pain and have returned to normal activity, work and sport. Five patients (4.8%) had mild pain on moving or at rest and one (0.96%) had moderate pain at rest. There was no correlation between pain and hernia type or surgical technique. At 2 years follow up hernia repair with beta-glucan coated mesh has a low recurrence rate. Incidence of chronic pain is low. The situation is in relationship with a lightweight and smooth mesh of polypropylene and the role of oat beta glucan optimizing the healing and inclusion of the mesh into the tissues.


Asunto(s)
Materiales Biocompatibles Revestidos , Hernia Inguinal/cirugía , Mallas Quirúrgicas , beta-Glucanos/química , Adulto , Anciano , Femenino , Estudios de Seguimiento , Hernia Inguinal/diagnóstico , Humanos , Laparoscopía/efectos adversos , Laparoscopía/métodos , Laparotomía/efectos adversos , Laparotomía/métodos , Masculino , Ensayo de Materiales , Persona de Mediana Edad , Probabilidad , Estudios Prospectivos , Medición de Riesgo , Índice de Severidad de la Enfermedad , Estadísticas no Paramétricas , Resultado del Tratamiento
6.
Ann Chir ; 130(5): 318-22, 2005 Jun.
Artículo en Francés | MEDLINE | ID: mdl-15935788

RESUMEN

BACKGROUND: Surgical treatment of morbid obesity by perigastric adjustable banding give at mid term follow up, contrasted results which associate success, failure and intermediate situations. AIMS: The objective of this work was to prospectively validate predicting items that would predict success in the surgical treatment of morbid obesity by adjustable gastric banding. MATERIAL AND METHODS: Eighty patients with morbid obesity have been treated with adjustable gastric banding. Seventy-one women, and nine men with a mean age of 37.8 years (20-59) with a mean follow up of 17 months (12-52). They have been classified in three groups: success, failure, and intermediate results. Uni- and multivariate analysis was performed on six criteria: age, sex, professional activity, metabolic disorders, length of obesity and body mass index (BMI). RESULTS: Concerning age, sex, professional activity, metabolic disorders, and length of obesity, there was no difference between the three groups. However, a BMI more than 50 kg/m(2) has a strong predictive value. Patients called "super obese", BMI >50, has a high rate of failure (64%) even the weight loss is often important in absolute value, but the BMI at the follow up remain high and more than 40. In this situation: gastric banding does not seem a good treatment because it does not protect these patients against the lethal risk of their comorbidities. CONCLUSION: In this study, there is not a specific candidate "profile" to a successful treatment of morbid obesity by adjustable gastric banding. Meanwhile the initial BMI appear to be a predictive factor of success or failure. In the case of patients with high BMI >50 (super obese) gastric banding did not seen to be a good treatment and another technical approach (gastric bypass) must be discussed.


Asunto(s)
Gastroplastia/métodos , Obesidad Mórbida/cirugía , Evaluación de Resultado en la Atención de Salud , Adulto , Índice de Masa Corporal , Femenino , Francia , Gastroplastia/efectos adversos , Humanos , Masculino , Persona de Mediana Edad , Análisis Multivariante , Estudios Prospectivos
7.
J Visc Surg ; 152(6): 395-6, 2015 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-26211571

RESUMEN

Gastrobronchial fistula is a rare complication of sleeve gastrectomy. In this case presentation, the diagnosis of gastrobronchial fistula was made by endoscopic contrast injection into the fistulous tract.


Asunto(s)
Fístula Bronquial/diagnóstico , Fístula Bronquial/etiología , Fístula Gástrica/diagnóstico , Fístula Gástrica/etiología , Gastroplastia/efectos adversos , Índice de Masa Corporal , Broncoscopía , Medios de Contraste/administración & dosificación , Femenino , Gastroscopía , Humanos , Persona de Mediana Edad , Obesidad Mórbida/cirugía , Resultado del Tratamiento
8.
Neuroscience ; 41(2-3): 607-15, 1991.
Artículo en Inglés | MEDLINE | ID: mdl-1908065

RESUMEN

Cessation of chronic (5 days), unilateral infusion of GABA into the somatomotor cortex of rats induces focal epileptic spikes which remain limited to the infused site and never evolve into generalized seizures. We have considered this finding as a new model of focal epilepsy and named it "GABA withdrawal syndrome". In the present study, we have measured local cerebral glucose utilization in order to map the cortical and subcortical regions involved in the GABA withdrawal syndrome. Local cerebral glucose utilization increased two- to three-fold in a 1-1.5 mm diameter area, involving all the cortical layers at the GABA-infusion site. This hypermetabolic area contained a central (1-2 mm diameter) hypometabolic zone showing neuronal depopulation in some animals. Except for the epileptic focus, the hemisphere ipsilateral to the infusion site was slightly hypometabolic. However, there was a large increase (three- to five-fold) in some ipsilateral thalamic nuclei (posterior oralis, ventralis postero-lateralis, centralis lateralis, ventralis lateralis and reticularis thalami nucleus). The local cerebral glucose utilization of the contralateral cortex and thalamus were unchanged. The present results confirm the focal nature of the epileptogenic syndrome produced by stopping chronic, intracortical GABA infusion. These results are markedly different from those described in the penicillin focal epilepsy model. Our data also show that specific ipsilateral thalamic relays may, by an as yet unknown mechanism, play a role in maintaining paroxysmal activity during the GABA withdrawal syndrome.


Asunto(s)
Encéfalo/fisiopatología , Corteza Cerebral/fisiopatología , Epilepsias Parciales/fisiopatología , Ácido gamma-Aminobutírico/farmacología , Animales , Encéfalo/anatomía & histología , Corteza Cerebral/efectos de los fármacos , Corteza Cerebral/fisiología , Desoxiglucosa/metabolismo , Esquema de Medicación , Electroencefalografía , Infusiones Parenterales , Cinética , Masculino , Especificidad de Órganos , Ratas , Ratas Endogámicas , Valores de Referencia , Ácido gamma-Aminobutírico/administración & dosificación
9.
Brain Res ; 655(1-2): 135-46, 1994 Aug 29.
Artículo en Inglés | MEDLINE | ID: mdl-7812766

RESUMEN

Interruption of a chronic GABA infusion into the rat somatosensory cortex induces the appearance of focal epileptic manifestations, known as the 'GABA withdrawal syndrome' (GWS). The aim of the present study was to determine, by immunocytochemistry, if neurotransmitters other than GABA are involved in GWS, namely: noradrenaline (NA), serotonin, choline acetyltransferase (CAT), cholecystokinin, neuropeptide Y, somatostatin and glial fibrillary acid protein (GFAP). Immunocytochemical data were compared in three animal groups: GABA-, saline- and L-aspartate (L-Asp)-infused rats. Only GABA-infused rats presented epileptic manifestations after interruption of the infusion. Saline- and L-Asp-infused rats served as controls. Observations were limited to the region surrounding the cortical infusion site. GABA-infused rats showed in the zone of the epileptic focus a number of cell bodies strongly immunoreactive to NA antibodies much larger than control rats. In addition, NA-immunoreactive fibers formed a dense plexus and some of them were observed around perikarya. In saline- and L-Asp-infused rats, the NA-immunolabelled fibers were sparse and NA immunolabelling was rarely observed in cell bodies. These results contrast to those obtained for the serotonergic system, where no significant difference was observed among the three groups of rats. CAT immunolabelling was observed in cell bodies, but not in nerve terminals in rats of the three groups. The number of CAT-immunoreactive cell bodies was much greater in GABA-infused rats than in the control animals. GFAP immunolabelling showed an important number of astrocytes throughout the cortex of the GABA-infused hemisphere, whereas, astrocytic reaction was limited to the infusion site in controls. Immunocytochemical data concerning peptides revealed cortical neuronal elements labelled similarly in the three groups of rats. Noradrenergic, cholinergic and glial modifications observed mainly in GABA-infused rats can result from lesion and from a specific action of GABA in chronic infusion. These modifications may contribute to the epileptogenesis of GWS, as recently demonstrated by electrophysiological recordings that show a modulating action of NA on firing activity of neurons involved in the epileptic focus.


Asunto(s)
Colina O-Acetiltransferasa/biosíntesis , Epilepsia/metabolismo , Proteína Ácida Fibrilar de la Glía/biosíntesis , Norepinefrina/biosíntesis , Ácido gamma-Aminobutírico/fisiología , Animales , Colecistoquinina/metabolismo , Gliosis/metabolismo , Inmunohistoquímica , Masculino , Neuropéptido Y/metabolismo , Ratas , Ratas Wistar , Serotonina/metabolismo , Corteza Somatosensorial/citología , Corteza Somatosensorial/metabolismo , Somatostatina/metabolismo
10.
Brain Res ; 498(2): 289-98, 1989 Oct 02.
Artículo en Inglés | MEDLINE | ID: mdl-2790484

RESUMEN

The interruption of intracortical, chronic GABA infusion is known to give rise to 'GABA withdrawal syndrome' (GWS) consisting of electroencephalographic paroxysmal focal activities, associated with behavioral epileptic signs. Neocortical slices were obtained from rats presenting the GWS (GWS slices), and intracellular recordings were performed in the vicinity of the gamma-aminobutyric acid (GABA)-infused site. Electrical stimulation of the underlying white matter induced paroxysmal depolarization shifts (PDSs) in virtually all neurons. Bath-applied GABA (1-10 microM) had no effect on these neurons, while the same dose range was found effective in blocking action potentials in saline-infused cortex slices obtained from control rats. In the GWS slices a population of neurons presented, in addition to synaptically induced PDSs, voltage-dependent and cobalt-sensitive PDSs and bursts of action potentials induced by depolarizing current injections. These intrinsic bursting neurons were unresponsive to high doses of GABA (100 microM). Dose-response curves of isoguvacine, a specific GABAA agonist, showed a shift to the right for the intrinsic bursting cells whatever the parameter measured (depolarization or conductance increase): the ED50 was 50-100 times higher for intrinsic bursting cells than for other non-intrinsic bursting cells, thus indicating that intrinsic bursting cells are tolerant to GABAA agonist. This tolerance may result from a decreased number of receptors or from a change in their properties as a consequence of the previous prolonged GABA infusion. The decrease in the GABA efficacy could lead to disinhibition and could thus give the appearance of epileptic events.


Asunto(s)
Corteza Cerebral/fisiopatología , Ácidos Isonicotínicos/farmacología , Síndrome de Abstinencia a Sustancias/fisiopatología , Ácido gamma-Aminobutírico/efectos adversos , Animales , Corteza Cerebral/patología , Tolerancia a Medicamentos , Electrofisiología , Técnicas In Vitro , Masculino , Neuronas/fisiología , Ratas , Ratas Endogámicas , Ácido gamma-Aminobutírico/farmacología , Ácido gamma-Aminobutírico/fisiología
11.
Brain Res ; 442(1): 175-9, 1988 Feb 23.
Artículo en Inglés | MEDLINE | ID: mdl-3129132

RESUMEN

A novel model of focal, cortical epilepsy is described. Chronic (6 h to 14 days), localized application of gamma-aminobutyric acid (GABA) into the somatomotor cortex of rats induces, upon withdrawal, the appearance of epileptogenic activity with maximal electrographic expression circumscribed to the infused site. This GABA-withdrawal syndrome (tested for a 100 micrograms/microliter/h dose) lasted from 24 to 168 h (mean values). A significant correlation was found between infusion time and duration of the excitability rebound, with the longer duration corresponding to the shorter infusion time. A distant lesion effect was observed in the thalamic area of cortical projection. The potential use of this neurotransmitter-induced phenomenon in the study of brain plasticity in general, and of epilepsy in particular, is discussed.


Asunto(s)
Corteza Cerebral/fisiopatología , Epilepsias Parciales/inducido químicamente , Ácido gamma-Aminobutírico/administración & dosificación , Animales , Corteza Cerebral/efectos de los fármacos , Corteza Cerebral/patología , Modelos Animales de Enfermedad , Epilepsias Parciales/fisiopatología , Iontoforesis , Masculino , Ratas , Ratas Endogámicas , Factores de Tiempo
12.
Neurosci Lett ; 189(2): 105-8, 1995 Apr 14.
Artículo en Inglés | MEDLINE | ID: mdl-7609912

RESUMEN

Bursting activities were investigated under conditions of reduced outward K+ currents in neocortical slices obtained from rats presenting the gamma-aminobutyric acid (GABA)-withdrawal syndrome (GWS), a focal epilepsy consecutive to the interruption of a chronic intracortical GABA infusion into the somatomotor cortex. These bursts were induced by intracellular depolarizing current injection and/or by white matter stimulation. Tetraethylammonium (TEA) at doses which did not change input resistance, spike duration or first interspike time interval abolished the burst terminating process and induced plateau-like potentials (up to 500 ms) which were tetrodotoxin-resistant and blocked by Ca2+ antagonists Cd2+ and Co2+. Therefore, it appears that bursts during GWS are generated by Ca(2+)-dependent plateau potentials which are terminated by a K+ current highly sensitive to TEA.


Asunto(s)
Corteza Cerebral/fisiología , Neuronas/fisiología , Canales de Potasio/fisiología , Ácido gamma-Aminobutírico/fisiología , Animales , Bloqueadores de los Canales de Calcio/farmacología , Corteza Cerebral/efectos de los fármacos , Corteza Cerebral/metabolismo , Electrofisiología , Epilepsia/fisiopatología , Técnicas In Vitro , Masculino , Potenciales de la Membrana/efectos de los fármacos , Potenciales de la Membrana/fisiología , Neuronas/efectos de los fármacos , Canales de Potasio/efectos de los fármacos , Ratas , Ratas Wistar , Compuestos de Tetraetilamonio/farmacología
13.
Neurosci Lett ; 74(1): 75-80, 1987 Feb 10.
Artículo en Inglés | MEDLINE | ID: mdl-3561877

RESUMEN

We studied the effects of chronic (7 days) infusion of GABA (100 micrograms/microliter) applied intracortically into the fronto-rolandic (FR) area of baboons, via osmotic minipumps. In photosensitive animals, bilateral GABA application produced a complete blockade of the paroxysmal discharges and associated clinical signs induced by intermittent light stimulation. Unilateral administration had similar effects, although these developed more gradually. At the end of the infusion period, both photosensitive and non-photosensitive animals showed a transitory state (3-4 days) of cortical hyperexcitability (spontaneous epileptogenic activity) localized to the infused area. The data indicate a role of GABA both in the natural photosensitivity of the epileptic baboon and in the withdrawal syndrome consecutive to the sudden interruption of chronically enhanced GABA levels in the FR territories of this monkey.


Asunto(s)
Epilepsia/inducido químicamente , Síndrome de Abstinencia a Sustancias/fisiopatología , Ácido gamma-Aminobutírico/efectos adversos , Animales , Electroencefalografía , Lóbulo Frontal/efectos de los fármacos , Papio
14.
Neurosci Lett ; 52(1-2): 91-6, 1984 Nov 23.
Artículo en Inglés | MEDLINE | ID: mdl-6527840

RESUMEN

The antagonism of some benzodiazepine (Bz) actions by physostigmine was investigated in 4 Papio papio baboons. As a model of these actions, the myoclonus induced in this species by clonazepam i.m. administration was used. The baboon develops, 20-30 min after Bz i.m. injection, a non-epileptic myoclonus characterized by clinical symptomatology (jerks involving mainly the neck and the trunk bilaterally), by the absence of any correlative EEG discharge, and by its facilitation during movement. This Bz-induced myoclonus resembles the intention myoclonus of human patients, as seen for example after anoxia. In the present series, the effect of physostigmine i.v. injection on the frequency of clonazepam-induced myoclonus was tested. Physostigmine produces a rapid and total abolition of the myoclonus, and this effect lasts for a period which corresponds to the pharmacological activity of physostigmine. On the contrary, atropine i.v. injection considerably increases the amount of Bz-induced myoclonus. These results allow the existence of an anticholinergic action of benzodiazepines, reversed by physostigmine, and the theory that the myoclonus would be the consequence of a cholinergic system depression to be hypothesized.


Asunto(s)
Benzodiazepinonas/antagonistas & inhibidores , Clonazepam/antagonistas & inhibidores , Mioclonía/inducido químicamente , Fisostigmina/farmacología , Animales , Atropina/farmacología , Clonazepam/farmacología , Sinergismo Farmacológico , Papio , Parasimpatolíticos
15.
Artículo en Inglés | MEDLINE | ID: mdl-2126145

RESUMEN

1. The influence of 7-methoxytacrine (7-MEOTA) on the non epileptic myoclonus of the Papio papio baboon was studied in 5 animals. 2. This type of myoclonus is thought to depend on a cholinergic system dysfunction since it can be induced by atropine and blocked by physostigmine. 3. 7-MEOTA, a tacrine derivative, is believed to display a conspicuous anticholinesterase activity but, surprisingly, it here potentiated the non epileptic myoclonus occuring either spontaneously or induced by atropine. 4. In baboons not spontaneously presenting the non epileptic myoclonus, 7-MEOTA induced the myoclonus in a fashion similar to atropine; such a myoclonus was blocked by physostigmine. 5. These data indicate a possible antagonist action of tacrine on the muscarinic acetylcholine receptor. From these data, it is suggested that caution is necessary when introducing a tacrine derivative in clinical practice.


Asunto(s)
Epilepsias Mioclónicas/fisiopatología , Tacrina/análogos & derivados , Animales , Atropina , Sinergismo Farmacológico , Epilepsias Mioclónicas/inducido químicamente , Mioclonía/inducido químicamente , Mioclonía/tratamiento farmacológico , Mioclonía/fisiopatología , Papio , Fisostigmina/uso terapéutico , Tacrina/farmacología
16.
Epilepsy Res ; 2(1): 1-8, 1988.
Artículo en Inglés | MEDLINE | ID: mdl-3197674

RESUMEN

The current source density (CSD) method was applied to the study of paroxysmal discharges (PDs) induced by intermittent light stimulation (ILS) in Papio papio baboons made photosensitive by a subconvulsant dose of allylglycine. CSD was studied in the motor and premotor areas (4 and 6). Laminar profiles of sinks and sources are similar in both areas. Nevertheless, the motor area seems to become involved first since it shows the earliest and most prominent sink in layer III. Such a sink, correlated with the PD spike, moves progressively upward to the cortical surface. The localization and other experimental arguments obtained by the same method suggest that this sink could be mainly of dendritic origin. The cortico-cortical afferents to the superficial layers of the motor area might thus determine the generation of this sink. A smaller sink, detected at the same latency between layers V and VI could correspond to synaptic activations due to thalamo-cortical afferents probably arriving on the pyramidal cells which project to the spinal cord. Intense sinks correlated with the PD wave in layer V could be passive, due to active sources lying just above and/or below, because in previous studies an inhibition of the cellular discharges was always observed in correlation with the wave. It is suggested that ILS triggered PDs involve visual cortico-cortical afferents directed mainly to the superficial layers of the motor area provoking an intense synaptic activation of the cellular elements situated at this level.


Asunto(s)
Alilglicina , Corteza Cerebral/fisiopatología , Epilepsia/fisiopatología , Glicina , Luz , Umbral Sensorial , Vías Visuales/fisiología , Animales , Corteza Cerebral/efectos de los fármacos , Potenciales Evocados , Glicina/análogos & derivados , Papio
17.
Am Surg ; 61(11): 1019-22, 1995 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-7486416

RESUMEN

Among hepatic hemangiomas (the most common solid hepatic tumor in adults), "giant hemangiomas" are those defined by a diameter greater than 4 cm. The natural history of such lesions is unclear, and many surgical procedures have been described. In five women and one man (mean age 49), we successfully used enucleation of the tumor under blood inflow control. This technique was made possible by a cleavage plane between the hepatic parenchyma and the hemangioma. This straightforward and safe procedure required a low rate of transfusion (mean 200 mL/patient) and spared a maximum amount of hepatic tissue.


Asunto(s)
Pérdida de Sangre Quirúrgica/prevención & control , Hemangioma Cavernoso/cirugía , Hemostasis Quirúrgica/métodos , Neoplasias Hepáticas/cirugía , Transfusión Sanguínea , Transfusión de Sangre Autóloga , Femenino , Humanos , Cuidados Intraoperatorios , Hígado/cirugía , Masculino , Persona de Mediana Edad
18.
Hernia ; 7(3): 125-9, 2003 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-12690533

RESUMEN

There remains debate as to how recurrent inguinal hernias should be managed. This study aimed to establish a management plan for recurrent hernias. From 1991-2000, 163 patients were operated on for recurrent inguinal hernias. The average interval from the initial surgery to recurrence was 46 months (range 10 days-13 years). The initial surgery prior to recurrence was Shouldice and other techniques without mesh in 142 cases, a Stoppa or a Lichtenstein procedure in ten and three cases, respectively, and laparoscopic repair in eight cases. The recurrent hernias were treated with a Shouldice repair in 52 cases (31.9%), the Lichtenstein technique in 48 cases (29.4%), a totally extraperitoneal laparoscopic repair in 40 cases (24.5%), and a Stoppa procedure in 23 (14.1%). The approaches to management evolved with time: the use of prostheses for recurrent hernia repair increased from 10% in 1991 (2/10) to 100% in 2000 (22/22). In contrast, the Shouldice repair decreased from 90% (18/20) in 1991 to 0% (0/22) in 2000. The Lichtenstein technique was first employed in 1993, in patients with a history of a conventional, laparoscopic, or Stoppa repair and has increased to represent 77% of cases (17/22) in 2000. The Stoppa technique has not been used since 1998. The use of a totally extraperitoneal laparoscopic approach went from 11% (2/18) in 1992 (introduction of the technique) to 23% (5/22) in 2000 and is reserved for recurrence after a Lichtenstein procedure or after conventional repair in working and/or physically active patients without any contraindications to general anesthesia. Prosthetic reinforcement has become the norm in the treatment of recurrent hernias. Given a previous conventional repair, the prosthesis can be placed by either an anterior or posterior approach. The approach is dependent on the level of activity and operability of the patient. If the recurrence follows a totally extraperitoneal or a Stoppa procedure, then the Lichtenstein intervention is recommended. A recurrence after a Lichtenstein procedure should be treated by a totally extraperitoneal approach.


Asunto(s)
Hernia Inguinal/cirugía , Laparoscopía/efectos adversos , Laparotomía/efectos adversos , Adulto , Distribución por Edad , Anciano , Anciano de 80 o más Años , Análisis de Varianza , Estudios de Cohortes , Femenino , Estudios de Seguimiento , Hernia Inguinal/diagnóstico , Humanos , Incidencia , Laparoscopía/métodos , Laparotomía/métodos , Masculino , Persona de Mediana Edad , Probabilidad , Estudios Prospectivos , Recurrencia , Reoperación/métodos , Reoperación/estadística & datos numéricos , Factores de Riesgo , Distribución por Sexo , Estadísticas no Paramétricas , Factores de Tiempo , Resultado del Tratamiento
19.
Hernia ; 8(1): 33-8, 2004 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-13680304

RESUMEN

Prosthetic reinforcement is now routine in the management of inguinal hernia, and it significantly reduces the risk of recurrence. However, there may be postoperative pain and discomfort of late onset, the intensity of which appears to be related to the rigidity of the material and its ability to integrate with tissues. We have evaluated the results of implantation with beta glucan-coated polypropylene mesh both objectively (early recurrence) and functionally (pain and quality of life). The mass of the coated mesh is reduced by 50% compared to a typical polypropylene implant. Beta glucan is an entirely natural plant product that eliminates the risk of viral or prion contamination associated with the use of collagen of animal origin. One hundred fifteen patients with a mean age of 55 years with a primary or recurrent inguinal hernia were treated with a prosthesis (Glucamesh). Fifty-eight patients underwent a Lichtenstein procedure, and 57 had a laparoscopic procedure (TEP, TAPP). Mean operative time was 40 min. There was no mortality, and morbidity was 8.6%. At 3 months follow-up, no recurrences were observed. The characteristics of the prosthesis were considered to be good or excellent in 93.9-100% of cases. Residual postoperative pain (analogue pain score less than 2) occurred in 4.3% of cases at day 15 and in 2.7% at day 90. The quality-of-life health score of the SF36 questionnaire preoperatively and postoperatively showed a significant improvement ( P<0.05) in the scores and a quality of life equivalent to healthy control subjects. This prosthesis is associated with a rapid and significant resolution of postoperative pain and a quick return to normal activity with an improved quality of life. In addition, the plant origin of the prosthesis eliminates any risk of viral or prion contamination.


Asunto(s)
Hernia Inguinal/cirugía , Prótesis e Implantes , Mallas Quirúrgicas , beta-Glucanos , Materiales Biocompatibles Revestidos , Glucanos/uso terapéutico , Indicadores de Salud , Humanos , Persona de Mediana Edad , Dimensión del Dolor , Dolor Postoperatorio , Estudios Prospectivos , Calidad de Vida , Recurrencia
20.
Surg Laparosc Endosc Percutan Tech ; 11(6): 347-50, 2001 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-11822856

RESUMEN

This study was a prospective evaluation of the quality of life of 50 patients after laparoscopic total fundoplication surgery for gastroesophageal reflux disease. The quality of life of 50 consecutive patients who underwent laparoscopic total fundoplication was evaluated using the Gastrointestinal Quality of Life Index questionnaire, which included 36 items in five different areas: symptoms, physical well-being, psychologic well-being, social relationships, and effects of medical treatment. Twenty-seven men and 23 women with a mean age of 52.6 +/- 16 years (range, 31-68 years) with gastroesophageal reflux disease were treated by laparoscopic total fundoplication (Nissen-Rosetti) and were included in the study. The follow-up was at least 2 years after surgery. The quality of life was evaluated before the surgery and 1 month, 3 months, 6 months, 1 year, and 2 years after surgery with follow-up in 100% of the cases. A control group of 50 healthy volunteers representing an identical population to that of the patients operated on (with respect to age, sex, body mass index, profession, and smoking) anonymously completed the same questionnaire. The preoperative and postoperative Gastrointestinal Quality of Life Index questionnaire scores of patients who had laparoscopic total fundoplication were compared with the Gastrointestinal Quality of Life Index questionnaire scores of the control group. Before surgery, the Gastrointestinal Quality of Life Index questionnaire score (86.7 +/- 8.5) was much inferior to that of the control group (123.8 +/- 13.6) (P < 0.001). This score significantly improved 3 months after surgery and was comparable (not significant) to that of the healthy control population 3 months, 6 months, 1 year, and 2 years after surgery (119.3 +/- 7.8). Improvements were reported mainly with respect to gastrointestinal symptoms and physical well-being. Social relationships were not modified. The quality of life of patients after laparoscopic surgery for gastroesophageal reflux disease improved and was close to the level expected in a healthy individual.


Asunto(s)
Fundoplicación , Reflujo Gastroesofágico/cirugía , Laparoscopía , Calidad de Vida , Adulto , Anciano , Femenino , Estudios de Seguimiento , Estado de Salud , Humanos , Masculino , Persona de Mediana Edad , Estudios Prospectivos , Encuestas y Cuestionarios , Factores de Tiempo
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