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1.
Support Care Cancer ; 24(1): 157-161, 2016 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-25962615

RESUMO

PURPOSE: Adverse oral symptoms gradually appear in advanced cancer patients as the disease progresses. We retrospectively investigated the associations between the incidence of oral problems and the days to death (DTD) in patients receiving palliative care. METHODS: The dental assessment sheets and medical charts of 105 patients who had been admitted into the palliative care unit at our hospital were examined. Case data included evaluations of organic and functional oral conditions at the time of admission for all patients. The cohort was divided into two groups according to the DTD as the short group (<28 days from the time of dental assessment until death) and the long group (≥28 days). We compared the incidences of organic and functional oral problems between these groups. RESULTS: Dry mouth, tongue inflammation, and bleeding spots were significantly more frequent in the short group than in the long group (78 vs. 54% for dry mouth, 67 vs. 46% for tongue inflammation, 35 vs. 14% for bleeding spots, respectively; p < 0.05). Tongue coating and candidiasis were comparable between the two groups. Dysphagia was significantly more common in the short group (43%) than in the long group (20%) (p = 0.01), as was assistance with oral health care (76 vs. 50%) (p = 0.01). CONCLUSIONS: Our findings suggest that, during palliative care, oral complications appear more frequently when the DTD period is shorter. These symptoms may be useful indicators when deciding on the proper timing of intensive oral care intervention to decrease oral problems and pain in terminally ill patients.


Assuntos
Doenças da Boca/mortalidade , Neoplasias/complicações , Cuidados Paliativos/métodos , Cuidados Críticos , Morte , Feminino , Humanos , Masculino , Doenças da Boca/complicações , Saúde Bucal , Estudos Retrospectivos
2.
Clin Nutr ; 38(1): 1-9, 2019 02.
Artigo em Inglês | MEDLINE | ID: mdl-30181091

RESUMO

RATIONALE: This initiative is focused on building a global consensus around core diagnostic criteria for malnutrition in adults in clinical settings. METHODS: In January 2016, the Global Leadership Initiative on Malnutrition (GLIM) was convened by several of the major global clinical nutrition societies. GLIM appointed a core leadership committee and a supporting working group with representatives bringing additional global diversity and expertise. Empirical consensus was reached through a series of face-to-face meetings, telephone conferences, and e-mail communications. RESULTS: A two-step approach for the malnutrition diagnosis was selected, i.e., first screening to identify "at risk" status by the use of any validated screening tool, and second, assessment for diagnosis and grading the severity of malnutrition. The malnutrition criteria for consideration were retrieved from existing approaches for screening and assessment. Potential criteria were subjected to a ballot among the GLIM core and supporting working group members. The top five ranked criteria included three phenotypic criteria (non-volitional weight loss, low body mass index, and reduced muscle mass) and two etiologic criteria (reduced food intake or assimilation, and inflammation or disease burden). To diagnose malnutrition at least one phenotypic criterion and one etiologic criterion should be present. Phenotypic metrics for grading severity as Stage 1 (moderate) and Stage 2 (severe) malnutrition are proposed. It is recommended that the etiologic criteria be used to guide intervention and anticipated outcomes. The recommended approach supports classification of malnutrition into four etiology-related diagnosis categories. CONCLUSION: A consensus scheme for diagnosing malnutrition in adults in clinical settings on a global scale is proposed. Next steps are to secure further collaboration and endorsements from leading nutrition professional societies, to identify overlaps with syndromes like cachexia and sarcopenia, and to promote dissemination, validation studies, and feedback. The diagnostic construct should be re-considered every 3-5 years.


Assuntos
Internacionalidade , Desnutrição/diagnóstico , Avaliação Nutricional , Adulto , Consenso , Humanos , Liderança , Estado Nutricional , Sociedades Científicas
3.
J Cachexia Sarcopenia Muscle ; 10(1): 207-217, 2019 02.
Artigo em Inglês | MEDLINE | ID: mdl-30920778

RESUMO

RATIONALE: This initiative is focused on building a global consensus around core diagnostic criteria for malnutrition in adults in clinical settings. METHODS: In January 2016, the Global Leadership Initiative on Malnutrition (GLIM) was convened by several of the major global clinical nutrition societies. GLIM appointed a core leadership committee and a supporting working group with representatives bringing additional global diversity and expertise. Empirical consensus was reached through a series of face-to-face meetings, telephone conferences, and e-mail communications. RESULTS: A two-step approach for the malnutrition diagnosis was selected, i.e., first screening to identify "at risk" status by the use of any validated screening tool, and second, assessment for diagnosis and grading the severity of malnutrition. The malnutrition criteria for consideration were retrieved from existing approaches for screening and assessment. Potential criteria were subjected to a ballot among the GLIM core and supporting working group members. The top five ranked criteria included three phenotypic criteria (weight loss, low body mass index, and reduced muscle mass) and two etiologic criteria (reduced food intake or assimilation, and inflammation or disease burden). To diagnose malnutrition at least one phenotypic criterion and one etiologic criterion should be present. Phenotypic metrics for grading severity as Stage 1 (moderate) and Stage 2 (severe) malnutrition are proposed. It is recommended that the etiologic criteria be used to guide intervention and anticipated outcomes. The recommended approach supports classification of malnutrition into four etiology-related diagnosis categories. CONCLUSION: A consensus scheme for diagnosing malnutrition in adults in clinical settings on a global scale is proposed. Next steps are to secure further collaboration and endorsements from leading nutrition professional societies, to identify overlaps with syndromes like cachexia and sarcopenia, and to promote dissemination, validation studies, and feedback. The diagnostic construct should be re-considered every 3-5 years.


Assuntos
Desnutrição/diagnóstico , Adulto , Índice de Massa Corporal , Consenso , Ingestão de Alimentos , Saúde Global , Humanos , Fenótipo , Sarcopenia/diagnóstico , Redução de Peso
4.
Clin Nutr ; 36(1): 49-64, 2017 02.
Artigo em Inglês | MEDLINE | ID: mdl-27642056

RESUMO

BACKGROUND: A lack of agreement on definitions and terminology used for nutrition-related concepts and procedures limits the development of clinical nutrition practice and research. OBJECTIVE: This initiative aimed to reach a consensus for terminology for core nutritional concepts and procedures. METHODS: The European Society of Clinical Nutrition and Metabolism (ESPEN) appointed a consensus group of clinical scientists to perform a modified Delphi process that encompassed e-mail communication, face-to-face meetings, in-group ballots and an electronic ESPEN membership Delphi round. RESULTS: Five key areas related to clinical nutrition were identified: concepts; procedures; organisation; delivery; and products. One core concept of clinical nutrition is malnutrition/undernutrition, which includes disease-related malnutrition (DRM) with (eq. cachexia) and without inflammation, and malnutrition/undernutrition without disease, e.g. hunger-related malnutrition. Over-nutrition (overweight and obesity) is another core concept. Sarcopenia and frailty were agreed to be separate conditions often associated with malnutrition. Examples of nutritional procedures identified include screening for subjects at nutritional risk followed by a complete nutritional assessment. Hospital and care facility catering are the basic organizational forms for providing nutrition. Oral nutritional supplementation is the preferred way of nutrition therapy but if inadequate then other forms of medical nutrition therapy, i.e. enteral tube feeding and parenteral (intravenous) nutrition, becomes the major way of nutrient delivery. CONCLUSION: An agreement of basic nutritional terminology to be used in clinical practice, research, and the ESPEN guideline developments has been established. This terminology consensus may help to support future global consensus efforts and updates of classification systems such as the International Classification of Disease (ICD). The continuous growth of knowledge in all areas addressed in this statement will provide the foundation for future revisions.


Assuntos
Desnutrição/diagnóstico , Desnutrição/terapia , Política Nutricional , Terminologia como Assunto , Caquexia/complicações , Consenso , Dieta , Nutrição Enteral , Fragilidade/complicações , Humanos , Avaliação Nutricional , Estado Nutricional , Obesidade/complicações , Sobrepeso/complicações , Nutrição Parenteral , Sarcopenia/complicações , Sociedades Científicas
5.
Phys Rev Lett ; 85(21): 4542-5, 2000 Nov 20.
Artigo em Inglês | MEDLINE | ID: mdl-11082591

RESUMO

A frequency upshift of a short microwave pulse is generated by the interaction between a relativistic underdense ionization front and a periodic electrostatic field with a perpendicular dc magnetic field. When the dc magnetic field is applied, further frequency upshift of 3 GHz is observed with respect to an unmagnetized case which has typically a GHz range. The radiation frequency depends on both the plasma density and the strength of the dc magnetic field, i.e., the plasma frequency and the cyclotron frequency. The frequency of the emitted radiation is in reasonable agreement with the theoretical values.

6.
Metabolism ; 41(9): 961-9, 1992 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-1518425

RESUMO

The purpose of this study was to test the hypothesis that different hepatocellular functions are regulated individually during sepsis. This was done by simultaneously measuring bile production, release of liver transaminases, and synthesis of secreted proteins in perfused livers from control and septic rats. Sepsis was induced by cecal ligation and puncture (CLP); control rats were sham-operated. After 16 hours, livers were perfused in situ, and bile flow, synthesis rates of albumin and alpha 1-acid glycoprotein (a major acute-phase protein in rats), and release of glutamic-oxaloacetic transaminase (GOT) and glutamic-pyruvic transaminase (GPT) into perfusate were determined. Within the same livers, sepsis resulted in a 54% increase in the synthesis of alpha 1-acid glycoprotein and approximately 30% inhibition of albumin synthesis concomitant with 50% lower bile flow. The concentrations of GOT and GPT in the perfusate increased slightly during the experiments, both when control and septic livers were perfused. The maintained tissue levels of adenosine triphosphate (ATP) and the uptake of Evans blue dye by less than 1% of the hepatocytes, although a late test of viability, suggest that both control and septic livers remained viable during perfusion. The results are consistent with the concept that different hepatocellular functions are individually regulated during sepsis. Thus, impairment of certain hepatocellular functions does not necessarily imply generalized liver failure.


Assuntos
Infecções Bacterianas/metabolismo , Infecções Bacterianas/fisiopatologia , Hepatopatias/fisiopatologia , Fígado/fisiopatologia , Trifosfato de Adenosina/análise , Trifosfato de Adenosina/metabolismo , Alanina Transaminase/sangue , Albuminas/metabolismo , Animais , Aspartato Aminotransferases/sangue , Infecções Bacterianas/sangue , Bile/metabolismo , Ceco/cirurgia , Ligadura , Fígado/metabolismo , Fígado/patologia , Hepatopatias/metabolismo , Hepatopatias/patologia , Masculino , Orosomucoide/metabolismo , Ratos , Ratos Endogâmicos , Fatores de Tempo , Transaminases/metabolismo
7.
Metabolism ; 40(3): 247-51, 1991 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-2000037

RESUMO

We studied the influence of sepsis on muscle protein synthesis and degradation in vivo and in muscles, incubated flaccid or at resting length. Sepsis was induced in rats by cecal ligation and puncture (CLP). Control rats were sham-operated. A flooding dose of 14C-phenylalanine was used to determine muscle protein synthesis rate in vivo, and protein breakdown was calculated from the difference between protein synthesis and growth rates. Protein synthesis rate in vitro was assessed by determining incorporation of 14C-phenylalanine into protein in incubated extensor digitorum longus (EDL) and soleus (SOL) muscles. Total and myofibrillar protein breakdown rates were determined from release into incubation medium of tyrosine and 3-methylhistidine (3-MH), respectively. Muscle protein synthesis rate in vivo was reduced by 35%, similar to the reduction observed in muscles incubated flaccid or at resting length. The calculated protein breakdown rate in vivo was increased by 31% in septic rats. In incubated muscles, the increase in total protein breakdown (ie, tyrosine release) during sepsis was almost identical in muscles incubated flaccid or at resting length, ie, 83% to 88% in EDL and 47% to 49% in SOL. Myofibrillar protein degradation in vitro (ie, 3-MH release) was increased approximately 10-fold in EDL muscles incubated flaccid or at resting length, but was not significantly affected by sepsis in SOL. Results suggest that sepsis-induced changes in protein synthesis observed in muscles incubated either flaccid or at resting length reflect changes in vivo. Changes in protein breakdown were qualitatively similar in vivo and in vitro, but results in incubated muscles may overestimate the increase in muscle proteolysis caused by sepsis.


Assuntos
Infecções/metabolismo , Proteínas Musculares/metabolismo , Trifosfato de Adenosina/metabolismo , Animais , , Masculino , Músculos/metabolismo , Técnicas de Cultura de Órgãos , Ratos , Ratos Endogâmicos , Descanso , Tirosina/metabolismo
8.
Arch Surg ; 127(2): 170-4, 1992 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-1540094

RESUMO

The role of tumor necrosis factor (TNF) in the regulation of muscle protein turnover was studied in rats. Protein synthesis and total and myofibrillar protein breakdown rates were measured in incubated extensor digitorum longus muscles. Intraperitoneal administration of recombinant TNF-alpha (300 micrograms/kg of body weight) increased total and myofibrillar protein breakdown rates by 28% and threefold, respectively, with no effect on protein synthesis. In subsequent experiments, sepsis was induced by cecal ligation and puncture or a sham-operation was performed. Rats received TNF antiserum (1 mL/100 g of body weight) or control serum 2 hours before cecal ligation and puncture or sham-operation. Treatment with TNF antiserum reduced the mortality rate from 25% to 5% following cecal ligation and puncture. The treatment had no effect on protein synthesis but reduced total and myofibrillar protein breakdown rates by 26% and 39%, respectively, in septic animals. Results suggest TNF is involved in the regulation of sepsis-induced muscle proteolysis.


Assuntos
Proteínas Musculares/metabolismo , Sepse/metabolismo , Fator de Necrose Tumoral alfa/fisiologia , Animais , Soros Imunes/metabolismo , Masculino , Proteínas Musculares/efeitos dos fármacos , Ratos , Ratos Endogâmicos , Proteínas Recombinantes/administração & dosagem , Proteínas Recombinantes/farmacologia , Sepse/mortalidade , Fator de Necrose Tumoral alfa/administração & dosagem , Fator de Necrose Tumoral alfa/farmacologia
9.
Arch Surg ; 128(2): 152-6; discussion 156-7, 1993 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-7679268

RESUMO

Nitric oxide (NO) has been implicated as a mediator of hemodynamic and metabolic changes associated with endotoxemia and inflammation. In vitro studies suggest that NO inhibits hepatocyte protein synthesis but the role of NO in the regulation of hepatic protein synthesis in vivo is not known. In this study, rats were given endotoxin or saline after pretreatment with the NO synthase inhibitor NG-nitro-L-arginine or solvent, and plasma levels of nitrite (NO2), nitrate (NO3), and aspartate aminotransferase and hepatic protein synthesis rate in vivo were measured after 4 and 10 hours. The NG-nitro-L-arginine effectively blocked the increase in serum NO2/NO3 seen in endotoxemia and also inhibited the increase in hepatic protein synthesis in endotoxemic rats. The aspartate aminotransferase levels were elevated in endotoxemic rats pretreated with NG-nitro-L-arginine. Results support previous reports of a protective effect of NO on the liver in endotoxemia and suggest that NO may upregulate hepatic protein synthesis in vivo. Further study is needed to clarify the reason for the apparent difference between the effect of NO on hepatic protein synthesis in vivo and in vitro.


Assuntos
Arginina/análogos & derivados , Endotoxinas/sangue , Fígado/efeitos dos fármacos , Fígado/metabolismo , Óxido Nítrico/farmacologia , Biossíntese de Proteínas , Regulação para Cima , Aminoácido Oxirredutases/antagonistas & inibidores , Animais , Arginina/farmacologia , Aspartato Aminotransferases/sangue , Radioisótopos de Carbono , Endotoxinas/administração & dosagem , Leucina/metabolismo , Fígado/patologia , Masculino , Nitratos/sangue , Óxido Nítrico Sintase , Nitritos/sangue , Nitroarginina , Ratos , Ratos Sprague-Dawley , Regulação para Cima/efeitos dos fármacos
10.
Pancreas ; 13(2): 184-92, 1996 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-8829187

RESUMO

To determine the efficacy of antibiotics in the prevention of pancreatic infection and the process of aggravation after induction of acute pancreatitis, antibiotic was administrated intravenously or intraarterially, starting 6 h after acute pancreatitis was induced in dogs by injecting autologous gallbladder bile into the main pancreatic duct. Flomoxef, recognized as an antibiotic able to penetrate well into pancreas tissue, was selected for the present study. Animals were divided into three groups: no antibiotic given (Group A), antibiotic given intravenously as a bolus injection of 25 mg/kg every 6 h (Group B), and antibiotic infused continuously into the celiac trunk (4 mg/kg/h) (Group C). Compared with Group A, continuous intraarterial infusion of antibiotic (Group C) significantly improved the survival rate and decreased the serum levels of phospholipase A2(PLA2) activity and endotoxin. Furthermore, it completely prevented the occurrence of pancreatic infection, not only ameliorating the severity of pancreatic necrosis but also reducing the activity levels of amidase, trypsin-like enzyme, and PLA2 in pancreas tissue. Group B showed little beneficial effect. Antibiotic concentration in peripheral blood and pancreas tissue was significantly higher in Group C than in Group B. These results suggest that continuous arterial infusion of antibiotics into the feeding artery of the pancreas is an effective modality for preventing pancreatic infection and aggravation of severe acute pancreatitis.


Assuntos
Antibacterianos/administração & dosagem , Infecções Bacterianas/prevenção & controle , Pancreatite Necrosante Aguda/microbiologia , Amidoidrolases/metabolismo , Animais , Antibacterianos/uso terapêutico , Cães , Escherichia coli/isolamento & purificação , Infecções por Escherichia coli/microbiologia , Feminino , Infusões Intra-Arteriais , Injeções Intravenosas , Masculino , Pâncreas/enzimologia , Pâncreas/microbiologia , Pancreatite Necrosante Aguda/tratamento farmacológico , Pancreatite Necrosante Aguda/etiologia , Fosfolipases A/sangue , Fosfolipases A/metabolismo , Fosfolipases A2 , Tripsina/metabolismo
11.
Am J Surg ; 168(3): 251-6, 1994 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-8080063

RESUMO

The effect of sepsis on the synthesis of endogenous and secretory proteins, including vasoactive intestinal peptide (VIP) and peptide YY (PYY), was determined in enterocytes from jejunum of rats. Sepsis was induced by cecal ligation and puncture (CLP). Control rats were sham-operated. Total endogenous and secreted protein synthesis was assessed in incubated jejunal enterocytes by measuring incorporation of 3H-phenylalanine into protein. Release of VIP and PYY into the medium of incubated enterocytes and cellular levels of the gut peptides were measured by radioimmunoassay. Sixteen hours after CLP, synthesis rates of both endogenous and secreted proteins were increased, and this effect of sepsis was most pronounced in cells from the lower parts of the villi and crypts. Enterocytes from septic rats released more VIP and PYY into the incubation medium, and approximately half of the peptides they released were newly synthesized VIP and PYY. Intracellular levels of VIP and PYY were increased as early as 4 hours after induction of sepsis. Our results suggest that sepsis stimulates the synthesis of endogenous and secretory proteins, including certain gut peptides, in small intestine mucosa. This is consistent with previous observations of increased circulating levels of VIP, PYY and other gastrointestinal hormones during sepsis. The biological significance of increased synthesis of gut peptides and other intestinal proteins during sepsis remains to be determined.


Assuntos
Hormônios Gastrointestinais/biossíntese , Infecções/fisiopatologia , Mucosa Intestinal/fisiopatologia , Biossíntese Peptídica , Biossíntese de Proteínas , Peptídeo Intestinal Vasoativo/biossíntese , Análise de Variância , Animais , Técnicas In Vitro , Mucosa Intestinal/citologia , Masculino , Peptídeo YY , Ratos , Ratos Sprague-Dawley
12.
Am J Surg ; 163(1): 181-4; discussion 184-5, 1992 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-1733367

RESUMO

The effect of sepsis on plasma levels of various gut peptides was studied in rats. Sepsis was induced by cecal ligation and puncture (CLP); control animals underwent sham operation. Sixteen hours after CLP or sham operation, portal and systemic blood was drawn, and plasma levels of gastrin, vasoactive intestinal peptide (VIP), secretin, peptide YY (PYY), gastrin-releasing peptide (GRP), and substance P were determined by radioimmunoassay. Plasma levels of gastrin, VIP, PYY, and secretin were elevated in septic rats compared with nonseptic animals, with the highest levels noted in portal blood. There was no effect of sepsis on GRP or substance P levels. In other experiments, human recombinant interleukin 1 alpha (IL-1 alpha) or recombinant tumor necrosis factor alpha (TNF alpha) was injected intraperitoneally (300 micrograms/kg body weight in 3 divided doses over 16 hours). There was no change in plasma levels of gut peptides after IL-1 alpha injection. TNF alpha induced elevation of PYY levels in portal plasma with no change in other gut peptide levels. The results suggest that sepsis stimulates release of certain gut peptides and that TNF, but not IL-1, may be partly responsible for this response. The mechanism of the release of gut peptides and its significance in the pathophysiologic changes induced by sepsis remain to be determined.


Assuntos
Infecções Bacterianas/metabolismo , Hormônios Gastrointestinais/metabolismo , Interleucina-1/farmacologia , Fator de Necrose Tumoral alfa/farmacologia , Animais , Masculino , Ratos , Ratos Endogâmicos
13.
Nutrition ; 15(1): 23-8, 1999 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-9918058

RESUMO

The intestine is now known to be an important site of protein production in the body, and glutamine (GLN) stimulates both secreted and non-secreted protein synthesis in the small bowel. The purpose of the present study was to evaluate the effect of GLN-supplemented parenteral nutrition on liver regeneration after hepatectomy. Animals were divided into two groups: a sham-operated control group (Group A) and a 70%-hepatectomy group (Group B). Postoperatively, one-third of the animals in each group were maintained on intravenous 10% glucose solution, on 10% glucose with 2% standard amino acid solution, or 10% glucose supplemented with 2% glutamine for 24 h. GLN administration after hepatectomy significantly promoted liver regeneration. In addition, assessment of amino acid metabolism showed that GLN administration activated GLN metabolism in the intestine and promoted alanine uptake by the remnant liver. This metabolic response also enhanced both secreted and non-secreted protein synthesis in intestinal epithelial cells, especially in cells isolated from the crypts. The proteins produced are important as a portal production factor for liver regeneration and intestinal cell proliferation. Bacterial and endotoxin translocation, on the other hand, was significantly reduced. Thus, the results of this study suggest that intravenous administration of GLN after hepatectomy significantly promoted liver regeneration.


Assuntos
Glutamina/farmacologia , Regeneração Hepática/efeitos dos fármacos , Aminoácidos/metabolismo , Animais , Translocação Bacteriana/fisiologia , Contagem de Células , Cães , Endotoxinas/sangue , Escherichia coli/fisiologia , Feminino , Glutamina/administração & dosagem , Hepatectomia , Infusões Intravenosas , Mucosa Intestinal/citologia , Mucosa Intestinal/metabolismo , Mucosa Intestinal/microbiologia , Jejuno/citologia , Jejuno/metabolismo , Jejuno/microbiologia , Fígado/citologia , Fígado/efeitos dos fármacos , Fígado/metabolismo , Masculino , Proteínas/metabolismo , Fase S , Staphylococcus/fisiologia
14.
JPEN J Parenter Enteral Nutr ; 17(4): 307-14, 1993.
Artigo em Inglês | MEDLINE | ID: mdl-8271353

RESUMO

The influence of glutamine on protein synthesis in small-bowel enterocytes was tested. Enterocytes were isolated from different levels of the villi of rat jejunum and were incubated in the presence of different glutamine concentrations, up to 3.4 mmol/L. Protein synthesis was determined by measuring incorporation of 3H-phenylalanine into trichloroacetic acid-precipitated proteins. Glutamine, but no other amino acids, stimulated protein synthesis in enterocytes from all levels of the villi. A maximal effect was noted at a glutamine concentration of 0.67 mmol/L, which is the normal plasma concentration. The amino acid stimulated the synthesis of both secreted and nonsecreted proteins. The stimulatory effect of glutamine on protein synthesis was blocked by the glutaminase inhibitor 6-diazo-5-oxo-L-norleucine and was duplicated by equimolar concentrations of acetoacetate or 3-hydroxybutyrate. The results suggest that glutamine stimulates protein synthesis in small-bowel enterocytes and that this effect of glutamine is related to provision of energy. The findings are important because they suggest that increased protein synthesis may be one of the mechanisms by which glutamine exerts its protective effect on gut mucosa during critical illness.


Assuntos
Glutamina/farmacologia , Jejuno/efeitos dos fármacos , Biossíntese de Proteínas , Animais , Células Cultivadas , Metabolismo Energético/efeitos dos fármacos , Mucosa Intestinal/citologia , Mucosa Intestinal/efeitos dos fármacos , Mucosa Intestinal/metabolismo , Jejuno/citologia , Jejuno/metabolismo , Masculino , Ratos , Ratos Sprague-Dawley
15.
JPEN J Parenter Enteral Nutr ; 17(3): 226-30, 1993.
Artigo em Inglês | MEDLINE | ID: mdl-8505827

RESUMO

Sepsis is a major complication of total parenteral nutrition (TPN). Impaired immunity has been suggested as being responsible for TPN-related sepsis, but it is unknown how the immune system is affected by TPN. We recently found that administration of lipid-free TPN resulted in an increase in prostaglandin E2 (PGE2) release by stimulated splenic macrophages. This observation suggested that TPN may impair immunity through the prominent immunosuppressive effects of PGE2. In the present study, we tested the hypothesis that addition of glucagon to TPN solution may protect against the immunosuppressive effect of TPN by modifying PGE2 secretion. Adult, male Sprague-Dawley rats (n = 18) underwent jugular vein cannulation: group 1 (n = 7) received intravenous saline and chow ad libitum; group 2 (n = 6) received TPN (80 mL/24 h); and group 3 (n = 5) received TPN (80 mL/24 h) plus glucagon (100 micrograms/24 h). After 10 days, spleens were removed and splenic macrophages were isolated and cultured for 24 h in plain M199 medium (nonstimulated) or in medium containing Escherichia coli lipopolysaccharide (5 micrograms/mL) (stimulated). PGE2 release was determined by enzyme-linked immunosorbent assay. There were no differences in PGE2 release between the groups of nonstimulated cells, but when stimulated with lipopolysaccharide, the macrophages from the TPN rats (group 2) released more PGE2 (81.68 +/- 25.99 ng/2.5 x 10(6) cells) than the control group (16.04 +/- 3.26 ng/2.5 x 10(6) cells). The release of PGE2 was normalized in the TPN animals treated with glucagon (15.71 +/- 3.33 ng/2.5 x 10(6) cells). This difference was significant, with p < .05 by Tukey's test after analysis of variance.(ABSTRACT TRUNCATED AT 250 WORDS)


Assuntos
Gorduras na Dieta/administração & dosagem , Dinoprostona/biossíntese , Glucagon/uso terapêutico , Macrófagos/metabolismo , Nutrição Parenteral Total , Fenômenos Fisiológicos da Nutrição Animal , Animais , Células Cultivadas , Dinoprostona/imunologia , Masculino , Nitrogênio/metabolismo , Nutrição Parenteral Total/métodos , Ratos , Ratos Sprague-Dawley , Baço/metabolismo
16.
Hepatogastroenterology ; 42(4): 308-16, 1995.
Artigo em Inglês | MEDLINE | ID: mdl-8586360

RESUMO

BACKGROUND/AIM: The necessity and efficacy of biliary drainage prior to major surgery in patients with obstructive jaundice have been reported in various clinical and experimental studies in Japan. However, it is not enough that Western countries understand the advantage of preoperative drainage. In this study, therefore, cytoprotective effect of preoperative biliary drainage drainage was evaluated using the cell biological technique. MATERIALS AND METHODS: Ten jaundiced dogs and 10 with drainage (after induction of jaundice) were each divided into two groups: those with and those without 40% hepatectomy. Using these four groups, the advantage of biliary drainage before hepatectomy in obstructive jaundice was studied, using isolated hepatocytes and Kupffer cells. RESULTS: In jaundiced dogs, isolated hepatocyte viability and intracellular cyclic AMP concentration were considerably reduced. The bleb formation rate, culture supernatant lipid peroxide and lactate dehydrogenase contents, and plasma thromboxane B2 and 6-keto-PGF1 alpha levels all markedly increased. These changes were more exaggerated in those after hepatectomy. In the dogs with drainage, all of these values were approximated to those in normal animals. The changes following hepatectomy in dogs with drainage were also less pronounced in comparison with jaundiced animals. CONCLUSIONS: These findings suggest that biliary drainage prior to hepatectomy in obstructive jaundice mitigates liver impairment, both at the cellular level and in terms of prostanoid metabolism. It was concluded that preoperative biliary drainage prior to hepatectomy ensures better results for obstructive jaundice.


Assuntos
Colestase/cirurgia , Drenagem , Hepatectomia , Fígado/patologia , Cuidados Pré-Operatórios , Animais , Sobrevivência Celular , Células Cultivadas , Colestase/metabolismo , Colestase/patologia , Colestase/fisiopatologia , Cães , Feminino , Células de Kupffer , Testes de Função Hepática , Masculino , Prostaglandinas/metabolismo
17.
Hepatogastroenterology ; 42(4): 300-7, 1995.
Artigo em Inglês | MEDLINE | ID: mdl-8586359

RESUMO

BACKGROUND/AIM: Although the role of preoperative percutaneous transhepatic biliary drainage in obstructive jaundice has been the subject of controversy in many other countries, in Japan, almost all surgeons agree that biliary decompression should be performed prior to the surgical treatment in obstructive jaundice. This study was performed in order to determine the role of preoperative percutaneous transhepatic biliary drainage in obstructive jaundice. PATIENTS AND METHODS: We evaluated 238 patients with preoperative obstructive jaundice, and also studied its pathophysiology in experimental animal models. RESULTS: Both of these studies demonstrated that this procedure should be performed if the value of total bilirubin is more than 5 mg/dl, the ICG Rmax value of the future remnant liver is less than 0.4 mg/kg/min, and the duration of jaundice is more than 3 weeks. Preoperative biliary drainage improves the liver function, so that major operations can be safely performed without major complications. CONCLUSIONS: It therefore seems preferable that patients undergo preoperative biliary decompression to reduce serum total bilirubin to below 5 mg/dl, and to improve hepatic and reticuloendothelial functions and hepatic reserve prior to any major surgical operation.


Assuntos
Colestase/cirurgia , Drenagem , Hepatectomia , Cuidados Pré-Operatórios , Adulto , Idoso , Animais , Bilirrubina/sangue , Colestase/sangue , Colestase/fisiopatologia , Protocolos Clínicos , Cães , Feminino , Humanos , Testes de Função Hepática , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos
18.
Gan To Kagaku Ryoho ; 15(4 Pt 2-1): 847-53, 1988 Apr.
Artigo em Japonês | MEDLINE | ID: mdl-3133985

RESUMO

Because the majority of patients with carcinoma of the pancreas are already in a state of malnutrition on admission, various complications can easily occur after surgery and adjuvant therapy such as radiation and chemotherapy. Therefore, the importance of nutritional management in the treatment of pancreatic carcinoma was examined in our department and the following results were obtained: 1) Preoperative nutritional assessment The nutritional state was evaluated using the Prognostic Nutritional Index for Surgery: PNI-S = -0.147 X (ratio of weight loss) + 0.046 X (weight for height) + 0.010 X (% triceps skin fold thickness) + 0.051 X (hepaplastin test), which was calculated from our results. In patients with the PNI-S of over 8, total pancreatectomy was performed safely, and when the PNI-S was more than 6, pancreaticoduodenectomy was done successfully. When the PNI-S was more than 5, it was possible to perform distal pancreatectomy or bypass operation. Depending on the nutritional assessment before surgery, the appropriate operative method could be selected, and the operative results could be improved by preoperative nutritional support. 2) Postoperative nutritional management Administration of a high-calorie by both parenteral and enteral nutrition during the early postoperative period produces good operative results, accompanied by a reduction of postoperative complications, such as fatty liver and so on. This approach also reduces the adverse effects of adjuvant therapy, such as radiation and chemotherapy, with an improvement of prognosis. Thus, it was revealed that nutritional assessment and management was very important for improving the therapeutic results in cases of carcinoma of the pancreas.


Assuntos
Fenômenos Fisiológicos da Nutrição , Pancreatectomia , Neoplasias Pancreáticas/terapia , Nutrição Enteral , Humanos , Estado Nutricional , Neoplasias Pancreáticas/cirurgia , Nutrição Parenteral , Cuidados Pós-Operatórios , Cuidados Pré-Operatórios
19.
Nihon Geka Gakkai Zasshi ; 88(11): 1632-43, 1987 Nov.
Artigo em Japonês | MEDLINE | ID: mdl-3431540

RESUMO

The purpose of this study was to evaluate the mechanism of development of lung edema and to determine adequate components and amounts of transfusion solution after major hepatic resection in normal and Dimethylnitrosamine (DMNA)-induced cirrhotic dogs. The dogs were administered maintenance dose (1-2 ml/kg/h) or large volumes (10-20 ml/kg/h) of lactated Ringer's solution (RL), 10% Dextrose or Dextran 40 (D40) after surgery. 1) In the groups transfused with maintenance dose or large volumes of RL, or large volumes of D40 after 80% and 70% hepatectomy in normal dogs and 40% hepatectomy in DMNA-induced cirrhotic dogs, the extravascular lung water (EVLW) increased with a high incidence of the development of lung edema. On the other hand, in the groups transfused with maintenance dose or large volumes of 10% Dextrose, or maintenance dose of D40, EVLW did not increase, thus preventing the development of lung edema. 2) The lower the functional reserve of the remaining liver and reticuloendothelial function, the more the volume of EVLW increased. The increments in plasma endotoxin titers through the spill over phenomenon, due to the decline of reticuloendothelial function after hepatectomy, caused an increase in the permeability of lung capillaries. Moreover, the decrease of colloid hydrostatic pressure gradient (CHPG) also caused an increase in EVLW. It is clear that both the permeability of lung capillaries and CHPG contribute to the development of lung edema after hepatectomy.


Assuntos
Hepatectomia/efeitos adversos , Soluções Isotônicas/administração & dosagem , Edema Pulmonar/etiologia , Animais , Água Corporal/metabolismo , Cães , Pressão Hidrostática , Soluções Isotônicas/análise , Fígado/fisiopatologia , Pulmão/metabolismo , Edema Pulmonar/fisiopatologia , Lactato de Ringer
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