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1.
World J Gastroenterol ; 14(30): 4763-70, 2008 Aug 14.
Artículo en Inglés | MEDLINE | ID: mdl-18720536

RESUMEN

AIM: To evaluate the effect of propolis administration on the healing of colon anastomosis with light and transmission electron microscopes. METHODS: Forty-eight Wistar-Albino female rats were divided into two groups and had colon resection and anastomosis. In group I, rats were fed with standard rat chow pre- and postoperatively. The rats in group II were fed with standard rat chow and began receiving oral supplementation of propolis 100 mg/kg per day beginning 7 d before the operation and continued until they were sacrificed. Rats were sacrificed 1, 3, 7 and 14 d after operation, and anastomotic bursting pressures measured. After the resection of anastomotic segments, histopathological examination was performed with light and transmission electron microscopes by two blinded histologists and photographed. RESULTS: The colonic bursting pressures of the propolis group were statistically significantly better than the control group. Ultrastructural histopathological analysis of the colon anastomosis revealed that propolis accelerated the phases of the healing process and stimulated mature granulation tissue formation and collagen synthesis of fibroblasts. CONCLUSION: Bursting pressure measurements and ultra structural histopathological evaluation showed that administration of propolis accelerated the healing of colon anastomosis following surgical excision.


Asunto(s)
Colectomía , Colon/efectos de los fármacos , Microscopía Electrónica de Transmisión , Própolis/farmacología , Cicatrización de Heridas/efectos de los fármacos , Administración Oral , Anastomosis Quirúrgica , Animales , Colon/fisiopatología , Colon/cirugía , Colon/ultraestructura , Femenino , Presión , Própolis/administración & dosificación , Ratas , Ratas Wistar , Estrés Mecánico , Factores de Tiempo
2.
World J Gastroenterol ; 14(23): 3729-32, 2008 Jun 21.
Artículo en Inglés | MEDLINE | ID: mdl-18595140

RESUMEN

AIM: To examine the possible effects of honey supplementation on hepatic damage due to obstruction of the common bile duct in an experimental rat model. METHODS: The study was performed with 30 male rats divided into three groups: a sham group, an obstructive jaundice group, and an obstructive jaundice plus honey group. At the end of the study period, the animals were sacrificed, and levels of nitric oxide (NO), and NO synthase (NOS) activities were measured in liver tissues, and levels of adenosine deaminase (ADA) and alanine transaminase (ALT) activities were measured in serum. RESULTS: Blood ALT and ADA activities were significantly elevated in the jaundice group as compared to those of the sham group. In the obstructive jaundice plus honey group, blood ALT and ADA activities were significantly decreased as compared to those of the jaundice group. In erythrocytes and liver tissues, NO levels were found to be significantly higher in the obstructive jaundice plus honey group compared to those of the sham group. Additionally, NO levels were found to be significantly higher in liver tissues from the animals in the obstructive jaundice plus honey group than those of the jaundice group. CONCLUSION: Honey was found to be beneficial in the prevention of hepatic damage due to obstruction of the common bile duct.


Asunto(s)
Colestasis/complicaciones , Miel , Ictericia Obstructiva/tratamiento farmacológico , Hígado/efectos de los fármacos , Sustancias Protectoras/farmacología , Adenosina Desaminasa/sangre , Alanina Transaminasa/sangre , Animales , Colestasis/tratamiento farmacológico , Colestasis/metabolismo , Colestasis/patología , Conducto Colédoco/cirugía , Modelos Animales de Enfermedad , Ictericia Obstructiva/etiología , Ictericia Obstructiva/metabolismo , Ictericia Obstructiva/patología , Ligadura , Hígado/enzimología , Hígado/patología , Masculino , Óxido Nítrico/metabolismo , Óxido Nítrico Sintasa/metabolismo , Ratas , Ratas Wistar
3.
World J Gastroenterol ; 14(21): 3410-5, 2008 Jun 07.
Artículo en Inglés | MEDLINE | ID: mdl-18528939

RESUMEN

AIM: To evaluate the effects of honey on bacterial translocation and intestinal villus histopathology in experimental obstructive jaundice. METHODS: Thirty Wistar-Albino rats were randomly divided into three groups each including 10 animals: group I, sham-operated; group II, ligation and section of the common bile duct (BDL); group III, bile duct ligation followed by oral supplementation of honey (BDL + honey) 10 g/kg per day. Liver, blood, spleen, mesenteric lymph nodes, and ileal samples were taken for microbiological, light and transmission electrone microscopic examination. RESULTS: Although the number of villi per centimeter and the height of the mucosa were higher in sham group, there was no statistically significant difference between sham and BDL + honey groups (P > 0.05). On the other hand, there was a statistically significant difference between BDL group and other groups (P < 0.05). The electron microscopic changes were also different between these groups. Sham and honey groups had similar incidence of bacterial translocation (P > 0.05). BDL group had significantly higher rates of bacterial translocation as compared with sham and honey groups. Bacterial translocation was predominantly detected in mesenteric lymph nodes. CONCLUSION: Supplementation of honey in presence of obstructive jaundice ameliorates bacterial translocation and improves ileal morphology.


Asunto(s)
Traslocación Bacteriana/efectos de los fármacos , Fármacos Gastrointestinales/farmacología , Miel , Íleon/efectos de los fármacos , Mucosa Intestinal/efectos de los fármacos , Ictericia Obstructiva/tratamiento farmacológico , Ganglios Linfáticos/efectos de los fármacos , Administración Oral , Animales , Conducto Colédoco/cirugía , Modelos Animales de Enfermedad , Fármacos Gastrointestinales/administración & dosificación , Íleon/microbiología , Íleon/ultraestructura , Mucosa Intestinal/diagnóstico por imagen , Mucosa Intestinal/microbiología , Ictericia Obstructiva/microbiología , Ictericia Obstructiva/patología , Ligadura , Ganglios Linfáticos/microbiología , Masculino , Mesenterio , Ratas , Ratas Wistar , Ultrasonografía
4.
World J Gastroenterol ; 14(13): 2085-8, 2008 Apr 07.
Artículo en Inglés | MEDLINE | ID: mdl-18395911

RESUMEN

AIM: To examine the effects of 10% diluted honey, which has been shown to be scolicidal, on the liver and biliary system and determine whether it could be used as a scolicidal agent in the presence of biliary-cystic communication. METHODS: Thirty Wistar-Albino rats were divided into two groups. Honey with 10% dilution in the study group and 0.9% saline (NaCl) in the control group were injected into the common bile ducts of rats through a 3-mm duodenotomy. The animals were sacrificed 6 mo after the procedure. Histopathological, biochemical, and radiological examinations were performed for evaluation of side effects. RESULTS: At the end of the sixth month, liver function tests were found to be normal in both groups. The tissue samples of liver and ductus choledochus of the honey group showed no histomorphologic difference from the control group. No stricture on the biliary tree was detected on the retrograde cholangiograms. CONCLUSION: According to these results, we concluded that 10% diluted honey could be used as scolicidal agent safely in the presence of biliary-cystic communication.


Asunto(s)
Conductos Biliares/efectos de los fármacos , Miel , Hígado/efectos de los fármacos , Animales , Conducto Colédoco/efectos de los fármacos , Conducto Colédoco/patología , Femenino , Humanos , Hígado/patología , Hígado/efectos de la radiación , Ratas , Ratas Wistar , Sales (Química)/farmacología
5.
Phytother Res ; 22(9): 1243-7, 2008 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-18697181

RESUMEN

In the present study, attempts have been made to determine the effects of honey on intestinal morphology, postoperative adhesions, and the healing of colonic anastomoses in the rats after colonic resection and anastomosis. Thirty-six rats were randomly divided into three groups each including 12 animals. Colonic resection and anastomosis were performed on all animals. Rats were fed with standard rat chow in group I, standard rat chow plus 10 g/kg/day honey in group II and artificial honey including the same caloric amount with honey in group III. Adhesion scores, bursting pressures and histopathological examinations were evaluated. Colonic bursting pressures of honey group were significantly better than control and artificial honey groups. Histological analysis of anastomotic site showed that submucosa and muscularis propria were nearly filled with granulation tissue and regular fibrin matrix in honey group. There was statistically significant difference between the adhesion scores of honey vs artificial honey and control groups. The scores of histological changes of ileum in honey group were significantly different from other groups. These results indicate a protective role of honey against intraabdominal adhesions and anastomotic dehiscence.


Asunto(s)
Anastomosis Quirúrgica , Miel , Intestinos/anatomía & histología , Adherencias Tisulares , Cicatrización de Heridas , Animales , Masculino , Ratas , Ratas Wistar
6.
Adv Ther ; 25(9): 943-50, 2008 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-18758698

RESUMEN

INTRODUCTION: In hydatid cyst disease, perforation and spontaneous fistula formation are rare, yet very serious, complications. In this study we describe five cases of hydatid cyst disease in which the cysts perforated. METHODS: In this retrospective study we evaluated five patients who were surgically treated for perforated hydatid cysts between 2002 and 2006. All patients were admitted to a local hospital with acute abdominal symptoms. RESULTS: The mean age of the patients (four males and one female) was 39 years. The perforations occurred spontaneously in four patients, and were the result of trauma in one. Three of the hydatid cysts were located in the liver and two in the spleen. Only one patient had a recurrent hydatid cyst. Diagnostic tools included ultrasonography (n=5), computerized tomography (n=1), and diagnostic peritoneal lavage (n=1). The cysts were treated by radical (n=2) or conservative (n=3) methods. There was no postoperative morbidity or mortality, and no recurrences of hydatid disease after follow-up (mean: 14 months). CONCLUSION: Cyst perforation in the peritoneal cavity is a serious complication of hydatid disease and should be treated immediately. The literature suggests that recurrences may be related to the operative technique, the location of the cyst, and inadequate irrigation of the peritoneal cavity with scolicidal agents. The findings of this study suggest that if treated promptly, cyst perforation can be successfully treated.


Asunto(s)
Abdomen Agudo/cirugía , Equinococosis/complicaciones , Abdomen Agudo/etiología , Adulto , Anciano , Equinococosis/cirugía , Femenino , Humanos , Masculino , Persona de Mediana Edad , Cavidad Peritoneal , Estudios Retrospectivos , Adulto Joven
7.
Toxicol Mech Methods ; 18(9): 679-83, 2008 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-20020924

RESUMEN

ABSTRACT In this study, the aim was to investigate possible effects of Electromagnetic Radiation (EMR) use on oxidant and antioxidant status in erythrocytes and kidney, heart, liver, and ovary tissues from rats, and possible protective role of vitamin C. For this aim, 40 Wistar albino female rats were used throughout the study. The treatment group was exposed to EMR in a frequency of 900 MHz, the EMR plus vitamin C group was exposed to the same EMR frequency and given vitamin C (250 mg/kg/day) orally for 4 weeks. There were 10 animals in each group including control and vitamin C groups. At the end of the study period, blood samples were obtained from the animals to get erythrocyte sediments. Then the animals were sacrificed and heart, kidney, liver, and ovary tissues were removed. Malondialdehyde (MDA) levels and superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GSH-Px), xanthine oxidase (XO), and adenosine deaminase (ADA) enzyme activities were measured in the tissues and erythrocytes. It was observed that MDA level, XO, and GSH-Px activities significantly increased in the EMR group as compared with those of the control group in the erythrocytes. In the kidney tissues, it was found that MDA level and CAT activity significantly increased, whereas XO and ADA activities decreased in the cellular phone group as compared with those of the control group. However, in the heart tissues it was observed that MDA level, ADA, and XO activities significantly decreased in the cellular phone group as compared with those of the control group. The results suggest that EMR at the frequency generated by a cell phone causes oxidative stress and peroxidation in the erythrocytes and kidney tissues from rats. In the erythrocytes, vitamin C seems to make partial protection against the oxidant stress.

8.
World J Gastroenterol ; 13(39): 5226-31, 2007 Oct 21.
Artículo en Inglés | MEDLINE | ID: mdl-17876893

RESUMEN

AIM: To investigate the effects of propolis on bacterial translocation and ultrastructure of intestinal morphology in experimental obstructive jaundice. METHODS: Thirty Wistar-Albino male rats were randomly divided into three groups, each including 10 animals: group I, sham-operated; group II, ligation and division of the common bile duct (BDL); group III, BDL followed by oral supplementation of propolis 100 mg/kg per day. Liver, blood, spleen, mesenteric lymph nodes, and ileal samples were taken for microbiological, light and transmission electron microscopic examination on postoperative 7th d after sacrification. RESULTS: The mean number of villi per centimeter and mean mucosal height of the propolis group were significantly different in the BDL group (P = 0.001 and 0.012, respectively). The electron microscopic changes were also different between these groups. Sham and BDL + propolis groups had similar incidence of bacterial translocation (BT). The BDL group had significantly higher rates of BT as compared with sham and BDL + propolis groups. BT was predominantly detected in MLNs and the most commonly isolated bacteria was Escherichia coli. CONCLUSION: Propolis showed a significant protective effect on ileal mucosa and reduced bacterial translocation in the experimental obstructive jaundice model. Further studies should be carried out to explain the mechanisms of these effects.


Asunto(s)
Antiinfecciosos/farmacología , Traslocación Bacteriana/efectos de los fármacos , Mucosa Intestinal/microbiología , Mucosa Intestinal/patología , Ictericia Obstructiva/patología , Própolis/farmacología , Animales , Atrofia/patología , Atrofia/prevención & control , Traslocación Bacteriana/fisiología , Modelos Animales de Enfermedad , Escherichia coli/fisiología , Mucosa Intestinal/ultraestructura , Ictericia Obstructiva/etiología , Ictericia Obstructiva/microbiología , Ligadura/efectos adversos , Masculino , Distribución Aleatoria , Ratas , Ratas Wistar
9.
Eur J Radiol ; 63(1): 84-93, 2007 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-17275238

RESUMEN

Hydatid disease, a worldwide zoonosis, is caused by the larval stage of the Echinococcus tapeworm. Although the liver and the lungs are the most frequently involved organs in the body, hydatid cysts of other organs are unusual. Radiologically, they usually demonstrate typical imaging findings, but unusual imaging characteristics of complicated cyst of hydatid disease, associated with high morbidity and mortality, are rarely described in the literature. The purpose of this study is to review the general features of hydatidosis and to discuss atypical imaging characteristics of the complicated hydatid disease in the human, with an emphasis on structure and rupture of the cystic lesion as well as ultrasonography (USG), computed tomography (CT), and magnetic resonance imaging (MRI) features of the disease. In our study, the available literature and images of the cases with complicated hydatidosis involving liver, lung, brain, spine and orbit were reviewed retrospectively. In hydatid disease, there are many potential local and systemic complications due to secondary involvement in almost any anatomic location in humans. Radiologically, in addition to the presence of atypical findings such as perifocal edema, non-homogenous contrast enhancement, multiplicity or septations and calcification, various unusual manifestations due to rupture or infection of the cyst have been observed in our cases with complicated hydatid disease. To prevent subsequent acute catastrophic results and the development of recurrences in various organs, it should be kept in mind that complicated hydatid cysts can cause unusual USG, CT, and MRI findings, in addition to typical ones, in endemic areas. Therefore, familiarity with atypical radiological appearances of complicated hydatid disease may be valuable in making a correct diagnosis and treatment.


Asunto(s)
Diagnóstico por Imagen/métodos , Equinococosis/complicaciones , Equinococosis/diagnóstico , Encéfalo/parasitología , Diagnóstico Diferencial , Femenino , Humanos , Hígado/parasitología , Pulmón/parasitología , Imagen por Resonancia Magnética/métodos , Masculino , Órbita/parasitología , Columna Vertebral/parasitología , Tomografía Computarizada por Rayos X/métodos , Ultrasonografía/métodos
10.
Adv Ther ; 24(1): 41-9, 2007.
Artículo en Inglés | MEDLINE | ID: mdl-17526460

RESUMEN

Bacterial translocation is the passage of bacteria or endotoxins from the gastrointestinal tract to extraintestinal sites, such as mesenteric lymph nodes, liver, spleen, and bloodstream. In this study, the investigators examined the effects of various enteral nutrients on bacterial translocation and intestinal morphology during the postoperative period. Sixty rats were randomly divided into 5 groups, each of which included 12 animals; cecal mobilization was performed in all groups. Group I rats were fed rat chow and water; group II was given standard enteral nutrients; group III, high-energy enteral nutrients; group IV, enteral nutrients supplemented with fiber; and group V, immunonutrients. Bacterial translocation was detected in mesenteric lymph nodes, spleen, liver, and blood cultures. Changes in the terminal ileum were scored from 0 to 4 with the morphologic scoring system. Bacterial translocation was predominantly detected in mesenteric lymph nodes. Rats fed immunonutrients (group V) showed a significant reduction in bacterial translocation compared with other groups. Although minor morphologic alterations in the villi were observed in groups IV and V, the histologic scores of these groups were not statistically different from the scores of control group members. In the present study, investigators evaluated the effects of various enteral nutritional solutions on bacterial translocation and intestinal morphology during the postoperative period. Enteral diets supplemented with arginine, nucleotides, and omega-3 fatty acids were found to reduce bacterial translocation. The investigators concluded that this effect might be related to improvement in immune function resulting from the use of immunonutrients.


Asunto(s)
Traslocación Bacteriana , Nutrición Enteral/efectos adversos , Alimentos Formulados , Intestinos/microbiología , Periodo Posoperatorio , Animales , Arginina/administración & dosificación , Fibras de la Dieta/administración & dosificación , Ácidos Grasos Omega-3/administración & dosificación , Femenino , Intestinos/patología , ARN Mensajero/administración & dosificación , Ratas , Ratas Wistar
11.
World J Gastroenterol ; 12(22): 3593-6, 2006 Jun 14.
Artículo en Inglés | MEDLINE | ID: mdl-16773717

RESUMEN

AIM: To evaluate the effects of abdominal trauma on hemorrhagic shock-induced acute lung injury in rats. METHODS: Five groups were allocated (n = 8) in the study. Group I was taken as the control group, group II as the hemorrhagic shock group, group III as hemorrhagic shock + laparotomy, group IV as hemorrhagic shock + splenectomy and group V as splenectomy + omentectomy + hemorrhagic shock group. Hemorrhagic shock was induced by drawing blood and reducing mean arterial pressure (MAP) to 40 mmHg within 10 min. After a hypotensive period of 1 h, animals were resuscitated. Bronchoalveolar lavage (BAL) was performed to recover cells from the alveolar space with 40 mL of BAL fluid after resuscitation malondialdehyde (MDA) and L-gamma-glutamyl-L-cysteinyl-glycine (GSH) levels were measured in serum, erythrocytes and lung tissue. RESULTS: Serum, erythrocyte, lung tissue MDA and GSH levels were significantly increased in hemorrhagic shock groups II-V (P < 0.05). Lymphocyte, neutrophil and alveolar macrophage counts in BAL fluid indicated a significant difference between control and shock groups (P < 0.05). CONCLUSION: The degree of trauma increases hemorrhagic shock-induced acute lung injury.


Asunto(s)
Traumatismos Abdominales/complicaciones , Síndrome de Dificultad Respiratoria/etiología , Síndrome de Dificultad Respiratoria/fisiopatología , Choque Hemorrágico/complicaciones , Choque Hemorrágico/fisiopatología , Traumatismos Abdominales/patología , Animales , Líquido del Lavado Bronquioalveolar/química , Líquido del Lavado Bronquioalveolar/citología , Eritrocitos/química , Eritrocitos/patología , Laparotomía , Pulmón/química , Pulmón/patología , Lesión Pulmonar , Linfocitos/patología , Macrófagos Alveolares/patología , Masculino , Malondialdehído/análisis , Malondialdehído/sangre , Neutrófilos/patología , Epiplón/cirugía , Ratas , Ratas Wistar , Especies Reactivas de Oxígeno/análisis , Especies Reactivas de Oxígeno/metabolismo , Síndrome de Dificultad Respiratoria/patología , Choque Hemorrágico/patología , Esplenectomía
12.
World J Gastroenterol ; 12(16): 2633-5, 2006 Apr 28.
Artículo en Inglés | MEDLINE | ID: mdl-16688817

RESUMEN

Hydatid disease is caused by the larval stage of the genus Echinococcus. Live hydatid cysts can rupture into physiologic channels, free body cavities or adjacent organs. Although hydatid disease can develop anywhere in the human body, the liver is the most frequently involved organ, followed by the lungs. Cysts of the spleen are unusual. There are only five case reports of spontaneous cutaneous fistulization of liver hydatid cysts in the literature. But there isn't any report about cutaneous fistula caused by splenic hydatid cyst. We report a first case of spontaneous cutaneous fistula of infected splenic hydatid cyst. A 43-year-old man was admitted to our Emergency Service with abdominal pain and fluid drainage from the abdominal wall. He has been suffering from a reddish swelling on the abdominal wall skin for four months. After a white membrane had been protruded out from his abdominal wall, he was admitted to our Emergency Service. On physical examination, a white membrane was seen to protrude out from the 2 cm x 1 cm skin defect on the left superolateral site of the umblicus. Large, complex, cystic and solid mass of 9.5 cm-diameter was located in the spleen on ultrasonographic examination. At operation, partial cystectomy and drainage was performed. After the operation, he was given a dosage of 10 mg/kg per day of albendazole, divided into three doses. He was discharged on the postoperative 10(th) d. It should be kept in mind that splenic hydatid cysts can cause such a rare complication.


Asunto(s)
Fístula Cutánea/etiología , Equinococosis/complicaciones , Enfermedades del Bazo/complicaciones , Adulto , Equinococosis/tratamiento farmacológico , Humanos , Masculino , Enfermedades del Bazo/tratamiento farmacológico
13.
Adv Ther ; 23(5): 696-700, 2006.
Artículo en Inglés | MEDLINE | ID: mdl-17142203

RESUMEN

Schwannomas are benign neurogenic tumors that arise from Schwann cells that line the sheaths of peripheral nerves. Schwannomas are commonly located in the soft tissues of the head and neck, extremities, mediastinum, retroperitoneum, and pelvis, but they are very rare in the mesentery. A 56-y-old man was admitted to the emergency service with nausea, vomiting, acute abdominal pain, and constipation. He reported weight loss and an intra-abdominal mass. On physical examination, the abdomen was distended, and a mass that was approximately 15 cm in diameter was palpated at the middle abdomen. Generalized abdominal tenderness and muscle spasm were noted. Air-fluid levels were seen on plain radiographs. Ultrasonography identified an intra-abdominal mass with intra-abdominal hemorrhage or perforation. Clinical signs and laboratory findings suggested an intra-abdominal mass, mechanical bowel obstruction, and an acute abdomen. The patient underwent surgery. The mass was completely excised and included a 4-cm-long intestinal segment that was densely adherent to the mass. Histopathologic and immunohistochemical examination revealed a mesenteric schwannoma. The patient was well 11 mo after surgery. Although schwannomas are very rare and generally asymptomatic, these tumors can become quite large and may cause acute abdominal problems such as mechanical bowel obstruction.


Asunto(s)
Mesenterio , Neurilemoma/diagnóstico , Neoplasias Peritoneales/diagnóstico , Humanos , Obstrucción Intestinal/etiología , Masculino , Persona de Mediana Edad , Neurilemoma/complicaciones , Neurilemoma/cirugía , Neoplasias Peritoneales/complicaciones , Neoplasias Peritoneales/cirugía
14.
Adv Ther ; 23(6): 1077-83, 2006.
Artículo en Inglés | MEDLINE | ID: mdl-17276975

RESUMEN

Echinococcosis is a zoonosis that is caused by adult or larval tapeworms belonging to the genus Echinococcus. Until now, no studies have sought to determine the scolicidal effects of honey. Therefore, the present study was undertaken to explore the scolicidal effects of honey in different concentrations for various exposure times. Tubes that contained at least 500 protoscolices were supplemented with 1%, 5%, 10%, 25%, and 50% concentrations of honey. Tubes were maintained at room temperature for 0.5, 1, 2, 3, 4, 5, and 10 min. At the end of the incubation times, the viability of protoscolices was assessed through a trypan blue exclusion test. The effective dose of honey was applied intraperitoneally to determine whether it caused an anaphylactic reaction or hyperglycemia. Honey concentrations of 10% or greater killed all protoscolices. The scolicidal effects of honey began at the end of the third minute. Honey did not cause adverse effects when applied intraperitoneally. In this study, an investigation of the scolicidal effects of honey showed that it is highly effective at a 10% concentration. On the basis of in vivo study results, the investigators concluded that honey is a potent scolicidal agent.


Asunto(s)
Equinococosis Hepática/terapia , Miel , Animales , Femenino , Ratas , Ratas Wistar , Ovinos
15.
Acta Cir Bras ; 31(12): 801-806, 2016 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-28076503

RESUMEN

PURPOSE:: To investigate the effect of silymarin on oxidative stress and hepatic injury induced by obstructive jaundice in an experimental model. METHODS:: Thirty Wistar-Albino type female rats were divided into 3 groups each including 10 rats. Only laparotomy was performed in group 1. Bile duct ligation was performed in group 2. In group 3, bile duct ligation was performed and orogastic silymarin 300 mg/kg/day dose was given for seven days. At the end of seven days, rats were sacrificed. The blood and liver tissue samples were taken to be examined biochemically and histopathologically. RESULTS:: The plasma and liver levels of malondialdehyde were significantly lower in silymarin group than in the bile duct ligated group. Although liver levels of GSH were significantly higher in silymarin group than in the bile duct ligated group, there was no significant difference between the plasma GSH levels of these groups. In silymarin group; the enlargement of hepatocytes, dilatation of canaliculi and the edema were regressed. CONCLUSION:: Silymarin diminished the harmful effects of obstructive jaundice on liver.


Asunto(s)
Antioxidantes/farmacología , Ictericia Obstructiva/complicaciones , Hígado/patología , Estrés Oxidativo/efectos de los fármacos , Silimarina/farmacología , Animales , Conductos Biliares , Femenino , Glutatión/sangre , Ictericia Obstructiva/patología , Ligadura , Masculino , Malondialdehído/sangre , Sustancias Protectoras/farmacología , Distribución Aleatoria , Ratas , Ratas Wistar
16.
Int Immunopharmacol ; 5(7-8): 1311-5, 2005 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-15914335

RESUMEN

OBJECTIVES: It has been demonstrated that immunosuppressive drug cyclosporine A (CsA) increases the synthesis of reactive oxygen species (ROS) and lipid peroxidation products in vitro and in vivo studies, but its possible toxic effects in ovary tissue have not been defined yet. This study was designed to elucidate possible relation between CsA treatment and oxidant/antioxidant status in rat ovary tissue and, to determine if antioxidant supplementation is beneficial. METHODS: CsA and black grape extracts were given to rats orally for 10 days. In each group (control, CsA, CsA plus black grape and black grape alone), there were 7 animals (28 rats in total). After the animals were sacrificed, their ovaries were removed to be used in the measurement of malondialdehyde (MDA) level and activities of superoxide dismutase (SOD), catalase (CAT) and xanthine oxidase (XO) enzymes. RESULTS: In the control, CsA plus black grape and black grape alone groups, MDA levels were significantly lower than CsA group. Xanthine oxidase activities were significantly higher in CsA and CsA plus black grape groups than control group. In addition, XO activity was significantly lower in black grape alone group than all the other groups including control group. There were no significant differences in the activities of SOD and CAT enzymes between the groups. CONCLUSION: The results suggest that CsA leads to oxidant stress and peroxidation in rat ovary tissues mainly due to increased XO activity. It has been suggested that this oxidant stress and peroxidation reactions can be prevented by antioxidant food supplementation like black grape.


Asunto(s)
Antioxidantes/farmacología , Ciclosporina/toxicidad , Ovario/efectos de los fármacos , Vitis , Animales , Catalasa/metabolismo , Femenino , Peroxidación de Lípido/efectos de los fármacos , Ovario/metabolismo , Estrés Oxidativo , Ratas , Ratas Sprague-Dawley , Xantina Oxidasa/metabolismo
17.
Acta cir. bras ; 31(12): 801-806, Dec. 2016. tab, graf
Artículo en Inglés | LILACS | ID: biblio-837659

RESUMEN

ABSTRACT PURPOSE: To investigate the effect of silymarin on oxidative stress and hepatic injury induced by obstructive jaundice in an experimental model. METHODS: Thirty Wistar-Albino type female rats were divided into 3 groups each including 10 rats. Only laparotomy was performed in group 1. Bile duct ligation was performed in group 2. In group 3, bile duct ligation was performed and orogastic silymarin 300 mg/kg/day dose was given for seven days. At the end of seven days, rats were sacrificed. The blood and liver tissue samples were taken to be examined biochemically and histopathologically. RESULTS: The plasma and liver levels of malondialdehyde were significantly lower in silymarin group than in the bile duct ligated group. Although liver levels of GSH were significantly higher in silymarin group than in the bile duct ligated group, there was no significant difference between the plasma GSH levels of these groups. In silymarin group; the enlargement of hepatocytes, dilatation of canaliculi and the edema were regressed. CONCLUSION: Silymarin diminished the harmful effects of obstructive jaundice on liver.


Asunto(s)
Animales , Femenino , Ratas , Silimarina/farmacología , Estrés Oxidativo/efectos de los fármacos , Ictericia Obstructiva/complicaciones , Hígado/patología , Antioxidantes/farmacología , Conductos Biliares , Distribución Aleatoria , Ratas Wistar , Sustancias Protectoras/farmacología , Ictericia Obstructiva/patología , Glutatión/sangre , Ligadura , Malondialdehído/sangre
18.
Int J Radiat Biol ; 86(12): 1044-9, 2010 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-20698742

RESUMEN

PURPOSE: To evaluate effects of mobile phone use on brain tissue and a possible protective role of vitamin C. MATERIALS AND METHODS: Forty female rats were divided into four groups randomly (Control, mobile phone, mobile phone plus vitamin C and, vitamin C alone). The mobile phone group was exposed to a mobile phone signal (900 MHz), the mobile phone plus vitamin C group was exposed to a mobile phone signal (900 MHz) and treated with vitamin C administered orally (per os). The vitamin C group was also treated with vitamin C per os for four weeks. Then, the animals were sacrificed and brain tissues were dissected to be used in the analyses of malondialdehyde (MDA), antioxidant potential (AOP), superoxide dismutase, catalase (CAT), glutathione peroxidase (GSH-Px), xanthine oxidase, adenosine deaminase (ADA) and 5'nucleotidase (5'-NT). RESULTS: Mobile phone use caused an inhibition in 5'-NT and CAT activities as compared to the control group. GSH-Px activity and the MDA level were also found to be reduced in the mobile phone group but not significantly. Vitamin C caused a significant increase in the activity of GSH-Px and non-significant increase in the activities of 5'-NT, ADA and CAT enzymes. CONCLUSION: Our results suggest that vitamin C may play a protective role against detrimental effects of mobile phone radiation in brain tissue.


Asunto(s)
Ácido Ascórbico/farmacología , Encéfalo/efectos de los fármacos , Encéfalo/efectos de la radiación , Teléfono Celular , Protectores contra Radiación/farmacología , Ondas de Radio/efectos adversos , 5'-Nucleotidasa/metabolismo , Adenosina Desaminasa/metabolismo , Animales , Antioxidantes/metabolismo , Encéfalo/metabolismo , Catalasa/metabolismo , Femenino , Glutatión Peroxidasa/metabolismo , Malondialdehído/metabolismo , Modelos Animales , Ratas , Ratas Wistar , Superóxido Dismutasa/metabolismo , Xantina Oxidasa/metabolismo
19.
ANZ J Surg ; 78(1-2): 82-6, 2008.
Artículo en Inglés | MEDLINE | ID: mdl-18199213

RESUMEN

AIM: To investigate long-term histological features of bladder augmentation using porcine small intestine submucosa (SIS) in a rabbit model. MATERIALS AND METHOD: Sixteen New Zealand rabbits were used. Porcine SIS was provided by a manufactured formation derived from the pig. After partial cystectomy was carried out on the bladder, a single layer of SIS (Cook-SIS Technology, Cook Biotech Incorporated, West Lafayette, IN, USA) (2 x 5 cm) was sewn to bladder with continuous 5/0 vicryl suture material in a watertight manner. Urinary diversion was not used. The rabbits were killed 12 months later and perivesical fat was removed together with bladder. The 5-microm preparations taken from the samples were stained with haematoxylin-eosin and Mason's trichrome dye. S-100 and F8 stains were also used for immunohistochemical investigations. RESULTS: The macroscopic view of bladder was normal. SIS was indistinguishable from normal bladder wall, but the region of the graft had a slight white coloration. Microscopic observations showed the continuity of transitional epithelium of host bladder tissue on SIS material. Detrusor and serosal layers were formed and these layers were indistinguishable from host bladder. Fibroblasts were scattered among the collagen fibrils. New vessel formations were present without lymphatic proliferation. Nerve regeneration was excellent. No inflammation was observed in normal and regenerated bladder wall. CONCLUSION: At the end of 12 months, the long-term histological features of bladder augmentation with porcine SIS in a rabbit model, such as presence of new vessel formations, nerve regeneration, collagen and smooth muscle regenerations, which were indistinguishable from original bladder, and the absence of inflammation, showed that SIS seems to be a viable alternative to the use of intestine in bladder augmentation.


Asunto(s)
Materiales Biocompatibles , Mucosa Intestinal , Intestino Delgado , Regeneración/fisiología , Mallas Quirúrgicas , Vejiga Urinaria/cirugía , Animales , Reacción Huésped-Injerto/fisiología , Conejos , Porcinos , Factores de Tiempo , Vejiga Urinaria/patología , Vejiga Urinaria/fisiopatología
20.
Breast Care (Basel) ; 3(6): 427-430, 2008.
Artículo en Inglés | MEDLINE | ID: mdl-21048915

RESUMEN

BACKGROUND: Myoepithelial cells are widely present in the breast, and their hyperplasia may result in a spectrum of disease ranging from myoepitheliosis to myoepithelial carcinoma. CASE REPORT: A 46-year-old woman presented with a palpable mass in her right breast. Mammography and ultrasonography showed a lesion in the upper quadrant of the right breast with spiculated borders and shape. Excisional biopsy showed adenomyoepithelial adenosis. CONCLUSIONS: Although considered benign, adenomyoepithelial lesions tend to recur due to inadequate excision. Therefore, possibility of recurrence and even metastasis should be considered during follow-up of patients with a diagnosis of adenomyoepithelial lesions.

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