Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 14 de 14
Filtrar
Mais filtros

Medicinas Complementares
Intervalo de ano de publicação
1.
Pancreas ; 49(4): 503-508, 2020 04.
Artigo em Inglês | MEDLINE | ID: mdl-32282763

RESUMO

OBJECTIVES: Early death in severe acute pancreatitis (SAP) is caused by pancreatic necrosis and multiple-organ failure due to microcirculation disorder. The aim of this study was to prove that recombinant human-soluble thrombomodulin (rTM) has therapeutic effects on SAP by preventing pancreatic necrosis and organ failure. METHODS: Male Wister rats were used. Cerulein was administered intraperitoneally 4 times every 1 hour, and lipopolysaccharide was administered intraperitoneally 3 hours after. One hour after administration of lipopolysaccharide, rTM was injected intravenously. Rats were observed for 24 hours after starting the experiment, and the survival rate was evaluated. All surviving rats were killed, and the blood sample, liver, and pancreas were excised. Serum amylase, aspartate aminotransferase, alanine aminotransferase, and high mobility group box 1 were measured, and the liver and pancreas were examined histologically. For the evaluation of microcirculation, von Willebrand factor staining was performed. RESULTS: Serum amylase, aspartate aminotransferase, and alanine aminotransferase were significantly decreased. The survival rate was significantly improved to 100%. Moreover, serum high mobility group box 1 was decreased. Liver injury and pancreatic necrosis became less severe, and microcirculation was preserved histologically. CONCLUSIONS: Early administration of rTM prevents organ failure by maintenance of microcirculation and improves prognoses of SAP.


Assuntos
Pancreatite/tratamento farmacológico , Trombomodulina/uso terapêutico , Alanina Transaminase/sangue , Amilases/sangue , Animais , Aspartato Aminotransferases/sangue , Biomarcadores , Ceruletídeo/toxicidade , Modelos Animais de Doenças , Avaliação Pré-Clínica de Medicamentos , Células Endoteliais/química , Células Endoteliais/patologia , Proteína HMGB1/sangue , Humanos , Lipopolissacarídeos/toxicidade , Fígado/irrigação sanguínea , Masculino , Microvasos/patologia , Pâncreas/irrigação sanguínea , Pâncreas/patologia , Pancreatite/sangue , Pancreatite/induzido quimicamente , Pancreatite/patologia , Pancreatite Necrosante Aguda/etiologia , Pancreatite Necrosante Aguda/prevenção & controle , Ratos , Ratos Wistar , Proteínas Recombinantes/uso terapêutico , Solubilidade
2.
Medicine (Baltimore) ; 98(48): e18095, 2019 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-31770228

RESUMO

RATIONALE: Transcatheter arterial chemoembolization (TACE) is recognized as one of the most commonly used modalities for non-surgical treatment for advanced hepatocellular carcinoma (HCC). Ectopic lipiodol embolism is an extremely rare complication of TACE. PATIENT CONCERNS: A 61-year-old man who had a 10-year history of cirrhosis caused by hepatitis B infection was diagnosed with ascites and HCC. Subsequently, the patient underwent TACE. However, he experienced persistent left upper abdominal pain, poor appetite, nausea, moderate fever and accompanied by elevation of serum and urine amylase on the 2nd and 3nd day after treatment. DIAGNOSES: The patient was diagnosed as having acute hemorrhagic necrotizing pancreatitis based on biochemical and inflammatory markers and CT findings. We deduced that the acute necrotizing pancreatitis was caused by a small branch of the left hepatic artery feeding the pancreas tail and embolizing the drug and lipiodol shunting to the tail of the pancreas. INTERVENTIONS: The patient was treated for 5 days according to the comprehensive treatment of acute necrotizing pancreatitis, by the inhibition of the secretion of pancreatic juice, relieving pain, and total parenteral nutrition and forbidding diet. The symptoms of the patient were observed to improve, and SAMS and urinary amylase (UAMS) level decreased to 143 IU/L and 254 IU/L, respectively and oral diet was permitted. OUTCOME: After a period of 2 weeks, the contrast abdominal CT showed slightly decreased fluid collection of the peri-pancreatic space. Moreover, it also showed flocculous and linear high-density shadow in the pancreatic tail, suggesting lipiodol deposition in the pancreatic tail. Subsequently, the symptoms were observed to abate, and the patient left the hospital. On the 21st day after TACE, the patient had a follow up in our outpatient department; the biochemical characteristics and inflammatory markers were observed to be normal CONCLUSION:: AP is still a rare complication after TACE. Etiology is still attributed to the occurrence of shunting and embolization drug reflux. Strategies strengthening the catheter tip that is placed as close to the distal branches of the hepatic artery for the possible careful injection of embolic materials is still the key to avoid post-TACE AP.


Assuntos
Antineoplásicos/efeitos adversos , Quimioembolização Terapêutica/efeitos adversos , Embolia/induzido quimicamente , Óleo Etiodado/efeitos adversos , Pancreatite Necrosante Aguda/etiologia , Carcinoma Hepatocelular/terapia , Humanos , Neoplasias Hepáticas/terapia , Masculino , Pessoa de Meia-Idade , Pâncreas/irrigação sanguínea
3.
Pancreas ; 46(8): 1046-1055, 2017 09.
Artigo em Inglês | MEDLINE | ID: mdl-28797013

RESUMO

OBJECTIVES: We set out to examine whether berberine (BBR) might affect the severity of pancreatitis and pancreatitis-associated lung injury in choline-deficient ethionine-supplemented (CDE) diet-induced severe acute pancreatitis. METHODS: Severe acute pancreatitis was induced by feeding a CDE diet for 3 days. Berberine was administered intraperitoneally during CDE diet. Mice were killed on days 1, 2, and 3 after the onset of CDE diet. The severity of pancreatitis was assessed by evaluating changes to the pancreas and lung and survival rate. Blood, pancreas, and lung were harvested for further examination. Furthermore, the regulating mechanisms of BBR were evaluated on the pancreas. RESULTS: Administration of BBR significantly inhibited histological damage to the pancreas and lung and decreased serum level of amylase and lipase, myeloperoxidase activity, cytokine production, and the mortality rate. Furthermore, administration of BBR inhibited activation of nuclear factor kappa B, c-Jun N-terminal kinases, and p38 in the pancreas during CDE diet. CONCLUSIONS: These findings suggest that BBR attenuates the severity of pancreatitis by inhibiting activation of nuclear factor kappa B, c-Jun N-terminal kinase, and p38 and that BBR could be used as a beneficial agent to regulate AP.


Assuntos
Berberina/farmacologia , Lesão Pulmonar/prevenção & controle , Pulmão/efeitos dos fármacos , Pâncreas/efeitos dos fármacos , Pancreatite Necrosante Aguda/prevenção & controle , Amilases/sangue , Animais , Colina/isolamento & purificação , Dieta/efeitos adversos , Etionina/administração & dosagem , Feminino , Lipase/sangue , Pulmão/metabolismo , Pulmão/patologia , Lesão Pulmonar/mortalidade , Camundongos Endogâmicos C57BL , Proteínas Quinases Ativadas por Mitógeno/antagonistas & inibidores , Proteínas Quinases Ativadas por Mitógeno/metabolismo , NF-kappa B/antagonistas & inibidores , NF-kappa B/metabolismo , Pâncreas/metabolismo , Pâncreas/patologia , Pancreatite Necrosante Aguda/etiologia , Pancreatite Necrosante Aguda/mortalidade , Fitoterapia/métodos , Taxa de Sobrevida
4.
Swiss Dent J ; 127(4): 315-323, 2017.
Artigo em Alemão, Francês | MEDLINE | ID: mdl-28480950

RESUMO

Non-surgical periodontal therapy is often performed as a combinational approach using supplemental systemic amoxicillin and metronidazole. Better clinical outcomes, less need for periodontal surgery and limited systemic complications are arguments to justify such an approach. However, combination therapy with systemic antibiotic treatment is still a matter of debate due to emerging antibiotic resistance patterns. In this case report, a 61-year-old women suffering from an acute pancreatitis following systemic antibiotic combinational treatment as part of a non-surgical periodontal therapy is described. Following adequate symptomatic treatment during a hospitalization of three days, the patient recovered and periodontal conditions improved significantly thereafter. This case report illustrates a rare, but potentially serious complication when prescribing systemic combinational antibiotics in non-surgical periodontal therapy. Adequate history taking and timely diagnosis of pancreatitis if developing is important to provide relevant treatment and to avoid pancreatitis-associated complications.


Assuntos
Amoxicilina/efeitos adversos , Amoxicilina/uso terapêutico , Biofilmes , Raspagem Dentária/efeitos adversos , Metronidazol/efeitos adversos , Metronidazol/uso terapêutico , Pancreatite Necrosante Aguda/etiologia , Periodontite/terapia , Terapia Combinada , Feminino , Humanos , Pessoa de Meia-Idade , Pancreatite Necrosante Aguda/diagnóstico , Encaminhamento e Consulta
5.
Int J Mol Sci ; 15(7): 11957-72, 2014 Jul 04.
Artigo em Inglês | MEDLINE | ID: mdl-25000266

RESUMO

Catalpol, an iridoid glucoside extracted from the traditional Chinese herbal medicine, Rehmannia glutinosa, is reported to exert neuroprotective, anti-inflammatory, anti-tumor and anti-apoptotic effects. The main aim of the present study was to investigate whether catalpol ameliorates experimental acute pancreatitis (AP) induced by sodium taurocholate (STC). AP was induced in rats via retrograde injection of 4% STC (0.1 mL/100 g) into the biliopancreatic duct. Rats were pre-treated with saline or catalpol (50 mg/kg) 2 h before STC injection. At 12, 24 and 48 h after injection, the severity of AP was evaluated using biochemical and morphological analyses. Pretreatment with catalpol led to a significant reduction in serum amylase and lipase activities, pancreatic histological damage, myeloperoxidase (MPO) activity, interleukin (IL)-1ß, IL-6 and TNF-α levels, and activation of nuclear factor kappa B (NF-κB). Moreover, administration of catalpol increased the viability of pancreatic acinar cells and inhibited NF-κB expression in vitro. Our results collectively support the potential of catalpol as a highly effective therapeutic agent for treatment of AP.


Assuntos
Glucosídeos Iridoides/uso terapêutico , NF-kappa B/metabolismo , Pancreatite Necrosante Aguda/tratamento farmacológico , Células Acinares/efeitos dos fármacos , Amilases/sangue , Animais , Interleucina-1beta/sangue , Interleucina-6/sangue , Glucosídeos Iridoides/farmacologia , Lipase/sangue , Masculino , Pancreatite Necrosante Aguda/etiologia , Pancreatite Necrosante Aguda/metabolismo , Peroxidase/metabolismo , Ratos , Ratos Sprague-Dawley , Ácido Taurocólico/toxicidade , Fator de Necrose Tumoral alfa/sangue
6.
In. Laffita Labañino, Wilson. Abdomen agudo quirúrgico en la embarazada. La Habana, Ecimed, 2013. , ilus.
Monografia em Espanhol | CUMED | ID: cum-54832
7.
Eksp Klin Gastroenterol ; (2): 44-9, 2009.
Artigo em Russo | MEDLINE | ID: mdl-19552021

RESUMO

Nutrition support and molecular-genetic markers of the immune system at patients with complicated forms of gastric pathology. In this study presented results of surgery clinic of and oncology faculty SGMU to improve treatment patients with acute pancreatitis, and various forms of pancreonecrozis, through a balanced Threpsology support and operational gastrointestinal endoscopy.


Assuntos
Colangiopancreatografia Retrógrada Endoscópica , Nutrição Enteral/métodos , Pancreatite/terapia , Esfinterotomia Endoscópica , Doença Aguda , Adulto , Bilirrubina/análise , Diagnóstico Precoce , Feminino , Humanos , Lipase/análise , Masculino , Pessoa de Meia-Idade , Testes de Função Pancreática , Pancreatite/diagnóstico , Pancreatite/etiologia , Pancreatite/cirurgia , Pancreatite Necrosante Aguda/diagnóstico , Pancreatite Necrosante Aguda/etiologia , Pancreatite Necrosante Aguda/cirurgia , Pancreatite Necrosante Aguda/terapia , Resultado do Tratamento , Adulto Jovem , alfa-Amilases/sangue
8.
Zhong Xi Yi Jie He Xue Bao ; 6(3): 262-5, 2008 Mar.
Artigo em Chinês | MEDLINE | ID: mdl-18334145

RESUMO

OBJECTIVE: To investigate the therapeutic effect of Yihuo Qingxia method, a traditional Chinese medicine therapeutic method for replenishing qi to activate blood, clearing away heat and dredging intestines, in treating hyperlipoidemia-related severe acute pancreatitis (SAP) in early stage. METHODS: One hundred and four patients with hyperlipoidemia-related SAP were divided into two groups: early group (admitted to hospital within 3 days after onset) and late group (admitted to hospital from 3 days to 7 days after onset). There were 52 cases in each group. All the patients were treated by Yihuo Qingxia method. RESULTS: There were no statistical differences in 48-hour Ranson scores, CT scores, 24-hour acute physiology and chronic heath evaluation II scores (APACHE II scores), and the levels of 24-hour serum triglyceride (TG) and serum glucose in the two groups (P>0.05). At the 10th day after onset, the serum TG level in early group was lower than that in late group (P<0.01). The incidences of acute respiratory distress syndrome, acute renal failure, hepatic inadequacy, congestive heart failure, shock, encephalopathy, infection and alimentary tract hemorrhage in early group were higher than those in late group (P<0.05). The mortality in early group was lower than that in the late group (P<0.05). The length of hospital stay in early group was shorter than that in late group (P<0.05). CONCLUSION: Yihuo Qingxia method has a good efficacy in treating hyperlipoidemia-related SAP in early stage.


Assuntos
Medicamentos de Ervas Chinesas/uso terapêutico , Hiperlipidemias/complicações , Medicina Tradicional Chinesa , Pancreatite Necrosante Aguda/tratamento farmacológico , Fitoterapia , Adulto , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Pancreatite Necrosante Aguda/sangue , Pancreatite Necrosante Aguda/etiologia , Síndrome de Resposta Inflamatória Sistêmica/etiologia , Síndrome de Resposta Inflamatória Sistêmica/prevenção & controle , Fatores de Tempo , Triglicerídeos/sangue
9.
Zhong Xi Yi Jie He Xue Bao ; 5(3): 268-71, 2007 May.
Artigo em Chinês | MEDLINE | ID: mdl-17498485

RESUMO

OBJECTIVE: To analyze the clinical features of severe acute pancreatitis (SAP) in aged patients, and to explore the measures of its diagnosis and treatment. METHODS: The clinical data of 100 aged patients (55-85 years old) with SAP admitted from January 2003 to December 2005 were reviewed and compared with those of 221 non-aged SAP patients (11-54 years old) admitted at the same period. RESULTS: Totally 112 times of onset occurred in 100 aged patients, and the main causes for senile SAP were biliary diseases and hyperlipemia. Both acute physiology and chronic health evaluation II (APACHE II) and Ranson scores of the aged patients with SAP were higher than those of the control group (P<0.05); while there was no significant difference in Balthazar score between the two groups(P>0.05). The incidences of low serum calcium, low albumin and high aspartate aminotransferase (P<0.05), liver, kidney or brain impairment as well as the mortality were higher in the senile SAP group than those in the control group (P<0.05). CONCLUSIONS: Biliary disease and hyperlipemia are the main causes of senile SAP, which lacks characteristic clinical symptoms and is often associated with multiple complications such as infection and lung, gastrointestinal tract, liver, kidney, and brain impairment. Individualized differential treatment with integrated traditional Chinese and Western medicine based on stage classification is an effective approach.


Assuntos
Tratamento Farmacológico/métodos , Medicamentos de Ervas Chinesas/uso terapêutico , Pancreatite Necrosante Aguda/tratamento farmacológico , Fitoterapia/métodos , APACHE , Idoso , Idoso de 80 Anos ou mais , Doenças Biliares/complicações , Quimioterapia Combinada , Feminino , Humanos , Hiperlipidemias/complicações , Masculino , Pessoa de Meia-Idade , Pancreatite Necrosante Aguda/etiologia , Resultado do Tratamento
10.
Physiol Res ; 55(1): 25-31, 2006.
Artigo em Inglês | MEDLINE | ID: mdl-16083313

RESUMO

The purpose of this study is to analyze the protective effect of combining N-acetylcysteine (NAC) and hyberbaric oxygen (HBO) treatment in the lung tissue during acute pancreatitis. Sixty Sprague-Dawley male rats were randomly divided into five groups; Group I; Control group (n=12), Group II; pancreatitis group (n=12), Group III; pancreatitis + NAC treatment group (n=12), Group IV; pancreatitis + HBO treatment group (n=12), Group V; pancreatitis + HBO + NAC treatment group (n=12). HBO was applied postoperatively for 5 days, twice a day at 2.5 fold absolute atmospheric pressure for 90 min. Lung tissue was obtained for measuring malondialdehyde (MDA), superoxide dismutase (Cu/Zn-SOD) and glutathione peroxidase (GSH-Px) levels along with histopathological tissue examinations. This study showed that all three treated groups (HBO alone, NAC alone and combined HBO+NAC treatment) had pulmonary protective effects during acute necrotizing pancreatitis.


Assuntos
Acetilcisteína/uso terapêutico , Oxigenoterapia Hiperbárica , Pancreatite Necrosante Aguda/terapia , Síndrome do Desconforto Respiratório/prevenção & controle , Animais , Ceruletídeo , Glutationa Peroxidase/metabolismo , Pulmão/efeitos dos fármacos , Pulmão/metabolismo , Pulmão/patologia , Masculino , Malondialdeído/metabolismo , Estresse Oxidativo , Pancreatite Necrosante Aguda/etiologia , Pancreatite Necrosante Aguda/patologia , Ratos , Ratos Sprague-Dawley , Síndrome do Desconforto Respiratório/etiologia , Síndrome do Desconforto Respiratório/patologia , Superóxido Dismutase/metabolismo
11.
Praxis (Bern 1994) ; 91(39): 1595-602, 2002 Sep 25.
Artigo em Alemão | MEDLINE | ID: mdl-12391910

RESUMO

Acute pancreatitis is classified in an interstitial edematous pancreatitis and a hemorrhagic necrotizing pancreatitis comprising 80% and 20% respectively of all cases. 80% of acute pancreatitis are attributed to biliary and alcoholic origin whereas in more than 10% no etiology can be established comprising the idiopathic forms of acute pancreatitis. Clinical symptoms are rather unspecific resulting in a large number of abdominal and extraabdominal diseases that have to be considered regarding the differential diagnosis. Diagnosis is based on clinical examination, laboratory findings and ultrasound. However it has to be taken into account that a lack of abdominal symptoms and unaltered amylase and lipase levels may be present in spite of overt pancreatitis. As severe pancreatitis is associated with a steep increase in mortality the early identification of severe pancreatitis is crucial. Several prognostic scores like the Ranson-, Glasgow- and APACHE-II score were developed to achieve a higher sensitivity detecting transition to severe pancreatitis. In addition new prognostic serum parameters are applicable. A prophylactic antibiotic therapy is recommended in patients with sterile necrosis whereas an infected necrosis requires organ preserving necrosectomy and retroperitoneal lavage which can be done surgically or referring to new concepts endoscopically. Apart from renal and respiratory failure, necrosis, pseudocysts and pancreatic abscess are the main complications. In the presence of detected stones in the common bile tract ERCP in combination with stone extraction and papillotomy reduces morbidity and mortality in patients with biliary pancreatitis. Laparoscopic cholecystectomy should be performed as soon as the patient has recovered and preferably during the same hospital admission.


Assuntos
Pancreatite Necrosante Aguda/diagnóstico , Pancreatite/diagnóstico , Doença Aguda , Causas de Morte , Procedimentos Clínicos , Indicadores Básicos de Saúde , Humanos , Pâncreas/patologia , Pancreatite/etiologia , Pancreatite/patologia , Pancreatite/terapia , Pancreatite Necrosante Aguda/etiologia , Pancreatite Necrosante Aguda/patologia , Pancreatite Necrosante Aguda/terapia , Prognóstico , Taxa de Sobrevida
12.
Hepatobiliary Pancreat Dis Int ; 1(3): 446-51, 2002 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-14607725

RESUMO

Severe acute pancreatitis is a disease of rapid onset and progression with high mortality and morbidity. A new concept suggests that it is multifactorially induced and involves multi-links and that therapy must be directed to several more important links at the same time. The regimen of integrated traditional Chinese and western medicine acts on the same or different sites and links to inhibit or block the inflammatory cascades. Concomitantly, preventive measures were taken at the start of the treatment for preventing the progression of the disease, protecting the function of vital organs, and avoiding the occurrence of complications. No mortality or serious complications occurred in a series of 38 patients with Balthazar's CT grading of D and E. The treatment regimen and the mechanisms of actions of these drugs were delineated in detail in the tables and figure; the regimen is highly recommended for clinical use.


Assuntos
Pancreatite Necrosante Aguda/fisiopatologia , Pancreatite Necrosante Aguda/terapia , Endoscopia do Sistema Digestório , Humanos , Medicina Tradicional Chinesa , Pâncreas/cirurgia , Pancreatite Necrosante Aguda/etiologia , Pancreatite Necrosante Aguda/prevenção & controle , Guias de Prática Clínica como Assunto , Índice de Gravidade de Doença
13.
J Gastroenterol Hepatol ; 16(9): 1055-9, 2001 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-11595073

RESUMO

BACKGROUND AND AIM: Secondary infection of pancreatic necrotic tissue and peripancreatic fluid is a serious complication of acute pancreatitis resulting in significant morbidity and mortality. The aim of this study was to find out the spectrum of bacterial infections, and their antibiotic sensitivity pattern in patients with acute pancreatitis. METHODS: All consecutive patients with acute pancreatitis were studied prospectively. Detailed investigations were carried out to identify bacterial infections and their antibiotic sensitivities in patients with suspected infection. These investigations included cultures of various body fluids, throat swabs, indwelling cannula and catheter tips. Pancreatic tissue was obtained by using needle aspiration or at surgery for Gram's stain, culture and sensitivity. All cultures were repeated until the presence of infection was confirmed or excluded. RESULTS: A total of 169 patients with acute pancreatitis were studied during the period between January 1997 and June 2000 (mean age 41.3 years; 116 males and 53 females). Of the 169 patients, 63 had infections at various sites. A total of 80 cultures were positive, and 12 different bacterial isolates were cultured from samples taken from these 63 patients. Polymicrobial infection was seen in 32% of patients. Twenty-four patients had a confirmed pancreatic infection. Blood cultures had a growth of organisms in 19 patients, with evidence of ongoing or worsening pancreatitis, thus raising a strong suspicion of infected necrosis in them. The commonest organisms were Escherichia coli from 20 cultures and Pseudomonas aeruginosa from 18 cultures. The antibiotic sensitivity pattern showed that most bacteria were sensitive to third generation cephalosporins and quinolones; notably among them were cefotaxime, ceftazidime, and ciprofloxacin. CONCLUSION: Bacterial infections were seen in 37% of patients with acute pancreatitis. The commonest organisms were Pseudomonas aeruginosa and Escherichia coli. Most bacterial isolates were sensitive to third generation cephalosporins and quinolones.


Assuntos
Antibacterianos/uso terapêutico , Infecções Bacterianas/tratamento farmacológico , Pancreatite Necrosante Aguda/tratamento farmacológico , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Infecções Bacterianas/diagnóstico , Cefotaxima/uso terapêutico , Ceftazidima/uso terapêutico , Ciprofloxacina/uso terapêutico , Infecções por Escherichia coli/diagnóstico , Infecções por Escherichia coli/tratamento farmacológico , Feminino , Humanos , Masculino , Testes de Sensibilidade Microbiana , Pessoa de Meia-Idade , Pancreatite Necrosante Aguda/diagnóstico , Pancreatite Necrosante Aguda/etiologia , Infecções por Pseudomonas/diagnóstico , Infecções por Pseudomonas/tratamento farmacológico
14.
Zhonghua Yi Xue Za Zhi ; 79(2): 143-5, 1999 Feb.
Artigo em Chinês | MEDLINE | ID: mdl-11601024

RESUMO

OBJECTIVE: To investigate the potential of pancreatic acinar cell calcium overload in the conversion of acute edematous pancreatitis (AEP) to necrotizing pancreatitis (ANP). METHODS: Ninety-six Sprague-Dawley rats were randomized in three experimental groups. Sham-operated control (Group I) AEP (Group II) was induced by pancreatic duct ligation and intravenous injection of bombesin (100 micrograms/kg) and secretin (10 micrograms/kg). ANP (Group III) was induced same as group II but with a large dose of dextran 110,000(500 mg/kg) intravenously. Pancreatic acinar cell Ca2+ overload was studied using fluorescent probe Fura2. Cytosolic free Ca2+ concentration ([Ca2+]i) in isolated pancreatic acinar cells and Ca(2+)-ATPase activity in pancreatic cell plasma membranes were determined 1, 3, 6, 9 h respectively after treatment. RESULTS: The results showed that pancreatic acinar cell [Ca2+]i was elevated at 1 h[(213 +/- 19) nmol/L, P < 0.05] and increased to (464 +/- 29) nmol/L at 6 h(P < 0.05) in rats with ANP, pancreatic cell plasma membrane Ca(2+)-ATPase activity decreased significantly from (29.8 +/- 0.4) nmol.min-1.mgp-1 at 1 h to (18.6 +/- 0.5) nmol.min-1.mgp-1 at 9 h in rats with ANP (P < 0.05). CONCLUSIONS: In ischemia-induced conversion of AEP to ANP, there exists Ca2+ overload in the pancreatic acinar cells. The decreased pancreatic cell plasma membrane Ca(2+)-ATPase activity may be an important reason for acinar cell Ca2+ overload in the development of acute pancreatitis.


Assuntos
Cálcio/metabolismo , Pâncreas/metabolismo , Pancreatite Necrosante Aguda/metabolismo , Pancreatite/metabolismo , Animais , Transporte Biológico Ativo , ATPases Transportadoras de Cálcio/metabolismo , Feminino , Masculino , Pancreatite Necrosante Aguda/etiologia , Distribuição Aleatória , Ratos , Ratos Sprague-Dawley
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA