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1.
Obes Rev ; 11(12): 924-8, 2010 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-20977602

RESUMO

Obesity is a major contributor to the global burden of chronic disease and disability. In developing countries like Indonesia, obesity often co-exists with undernutrition. Data from national basic health research 2007 showed that overnutrition was found among all age groups, on a double digit scale, with similar magnitude in urban and rural areas and higher prevalence in adult female. In contrary to 14% undernourished children under the age of 5 years, 12% of their counterparts were overnourished; for 6-14 years 10% vs. 6%; and for 15 years and above 15% vs. 19%. The purpose of the review is to raise awareness on the increasing obesity problem and to set recommendations to prevent obesity. Stunted adults in developing countries are 1.2 times more likely to be overweight than non-stunted adults. Approaches to overcoming obesity in adulthood emphasize dietary changes, increasing physical activity and behaviour modification. It is important for Indonesia to target nutrition intervention for female adolescents, pregnant woman to first 2 years of life, initiate nutrition education for school-age children and disseminate Holistic Healthy Framework Approach with key message 'Initiate healthier food choices'. Prompt Nutrition Guidelines and the use of lower body mass index cut-off should be considered.


Assuntos
Saúde da Família , Promoção da Saúde/organização & administração , Obesidade/economia , Obesidade/etiologia , Pobreza , Adolescente , Adulto , Fatores Etários , Criança , Pré-Escolar , Feminino , Humanos , Indonésia/epidemiologia , Lactente , Recém-Nascido , Masculino , Desnutrição/economia , Desnutrição/epidemiologia , Desnutrição/etiologia , Obesidade/epidemiologia , Gravidez , Prevalência , Fatores de Risco , Fatores Sexuais , Magreza/economia , Magreza/epidemiologia , Magreza/etiologia , Adulto Jovem
2.
Artigo em Russo | MEDLINE | ID: mdl-12966889

RESUMO

The history of emergence of the probiotics concept as well as basic knowledge on the mechanism of their action is described. The possibilities of the therapeutic use of probiotics, in particular for cases of Crohn's disease, viral gastroenteritis and travelers' diarrhea are discussed. The conclusion is made that the effectiveness of the use of probiotics has not yet been proved due to the fact that in clinical trials of these preparations many uncontrolled variables are not taken into consideration. For this reason at the present moment the prophylactic and curative use of probiotics is an idea whose constructive character has yet to be proved.


Assuntos
Probióticos/uso terapêutico , Doença de Crohn/terapia , Disenteria/terapia , Gastroenterite/terapia , Gastroenterite/virologia , Humanos , Lactobacillus , Viagem
4.
Acta Paediatr ; 90(12): 1368-72, 2001 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-11853330

RESUMO

UNLABELLED: Acetylated distarch phosphate (ADiSP) is a modified starch used in some baby foods. The bioavailability of ADiSP and a native (unmodified) starch was evaluated in 20 normal infants and 21 toddlers aged 8-24 mo with chronic non-specific diarrhea. Formulae contained 8% native or 8% modified waxy maize starch. No infant or toddler consuming Formula N (native starch) had elevated peak breath hydrogen levels (20 ppm or greater), stools clinically positive for reducing substances (0.75% or greater) or loose stools. Fourteen infants received formula M (modified starch): 2 had elevated breath hydrogen, 1 had positive stools and another had loose stools. Of the 21 toddlers fed formula M, 2 had elevated breath hydrogen, but none had positive stools or loose stools. Formula NS (native starch with 2% sorbitol) had little effect on breath hydrogen in the infants but significantly increased it in the toddlers. Formula NS produced loose stools in 2 toddlers but no clinically positive stools in any infant or toddler. Formula MS (modified starch with 2% sorbitol) elevated breath hydrogen in 3 infants and 8 toddlers, and produced positive stools in 2 infants and 2 toddlers, and loose stools in 4 infants and 7 toddlers. Formula MSF (modified starch with 2% sorbitol and 5% fructose) elevated breath hydrogen in 7 infants and 10 toddlers, positive stools in 7 infants and 6 toddlers, and loose stools or diarrhea in 7 infants and 11 toddlers. CONCLUSION: ADiSP modified starch can increase breath hydrogen and produce loose stools. Sorbitol and fructose aggravate the malabsorption, in some cases leading to frank diarrhea.


Assuntos
Diarreia Infantil/induzido quimicamente , Aromatizantes/farmacocinética , Conservantes de Alimentos/efeitos adversos , Conservantes de Alimentos/farmacocinética , Frutose/farmacocinética , Síndromes de Malabsorção/induzido quimicamente , Fosfatos/efeitos adversos , Fosfatos/farmacocinética , Sorbitol/farmacocinética , Amido/efeitos adversos , Amido/farmacocinética , Acetilação , Pré-Escolar , Feminino , Aromatizantes/efeitos adversos , Frutose/efeitos adversos , Humanos , Lactente , Absorção Intestinal/efeitos dos fármacos , Masculino , Sorbitol/efeitos adversos
5.
JPEN J Parenter Enteral Nutr ; 23(5 Suppl): S3-6, 1999.
Artigo em Inglês | MEDLINE | ID: mdl-10483884

RESUMO

The primary factors in feeding premature infants are dependent on the development and maturation of digestion and absorption. The maturation of digestive and absorptive functions of carbohydrates, proteins, fats, minerals, and vitamins in the young premature infant were determined in relation to availability of hydrolytic enzymes, such as lipases, proteases, amylases, glucosidases, and lactase. The feeding is dependent on the ability of the premature infant to secrete salivary enzymes, gastric acid, pepsin, pancreatic exocrine enzymes, the presence of enterohepatic circulation, and the hydrolytic and absorptive capacity of the entercocyte. To evaluate the complexity of the gut maturation process, we proposed a unified concept where the ontogeny of the gastrointestinal system is the result of the following four major determinants: genetic endowment, intrinsic developmental and biological clock, endogenous regulatory mechanisms, and environmental influences. The developmental clock represents a predetermined temporal sequence of happenings in ontogeny that is inherently controlled. By 20 weeks of gestation, the anatomic differentiation of the fetal gut has progressed to the extent that it resembles that of a newborn. Secretory and absorptive functions, however, develop at different rates; the intestinal absorptive process is only partially available before 26 weeks of gestation, whereas gastric and pancreatic secretion is only basal and can be stimulated only partially even in the full-term newborn period. Regulatory mechanisms control the expression of the genetic endowment at various stages in gastrointestinal development. Neural-hormonal factors play major roles in the ontogeny of the gut. Adrenalectomy, hypophysectomy, and thyroidectomy delay the development of the gut. Administration of glucocorticoids or thyroxine at the critical stage in maturation causes early appearance of enzymes within the intestine. Other hormones that are potentially important in regulating gastrointestinal development include cholecystokinin, gastrin, secretin, which have trophic effects on the gastrointestinal tract, and insulin, insulin-like growth factors, and epidermial growth factor. The development of gastrointestinal secretory function, particularly in response to hormonal stimulation, has received considerable attention. The degree of response of the target cell is determined not only by the amount of effective hormone reaching it but also by the number and affinity of receptors on its surface. Human newborns have high levels of gastrin in their sera, yet have low acid output. Exogenous gastrin is an ineffective stimulant despite the presence of seemingly "anatomically developed" parietal cells. It seems that neither endogenous nor exogenous gastrin has an effect on the target cell. If one accepts the role of circulating gastrin levels in the regulation of its own receptor, one can hypothesize the absence of a regulatory effect of gastrin in the newborn period. It was shown that hormonal regulation of migrating activity by motilin is also absent in the preterm and term infant. Plasma levels of motilin in neonates are comparable to those found in adults, but migrating motor complexes occur in the absence of cycling of plasma concentrations. Interestingly, however, the motilin receptor appears to be present. In conclusion, the feeding mode content, concentration, and volume of the very young premature infant can be assessed by the development of digestive and absorptive capacity and gut motility. The concomitant changes in gut hormones and regulatory peptides during ontogeny and feeding will add a new dimension in the understanding of when, what, and how to feed the very young premature infant.


Assuntos
Digestão , Fenômenos Fisiológicos do Sistema Digestório , Sistema Digestório/crescimento & desenvolvimento , Desenvolvimento Embrionário e Fetal/fisiologia , Recém-Nascido Prematuro , Mucosa Intestinal/crescimento & desenvolvimento , Sistema Digestório/enzimologia , Motilidade Gastrointestinal , Humanos , Recém-Nascido , Absorção Intestinal , Mucosa Intestinal/fisiologia
6.
Indian J Pediatr ; 65(4): 541-6, 1998.
Artigo em Inglês | MEDLINE | ID: mdl-10773902

RESUMO

Modified food starches were developed as a stabilizer, providing desirable consistency, texture, and storage ability. They are used primarily in strained and junior foods and, to a minor extent, in infant formulas. However, despite the fact that there is an increasing tendency to introduce solid foods to infants at a very early age, there is few long-term studies to delineate the effect of starch feeding on the growth of young infants. Modified food starches used by the food industry for infants and young children are of concern and there is an urgent need for additional data regarding their bioavailability, effect on nutrient absorption, intestinal changes, and toxic, mutagenic, and carcinogenic effects. Therefore, the inclusion of modified food starches should be used prudently and sparingly.


Assuntos
Alimentos Infantis/análise , Amido/análise , Animais , Pré-Escolar , Manipulação de Alimentos , Humanos , Lactente , Alimentos Infantis/efeitos adversos , Fatores de Risco , Amido/efeitos adversos
7.
J La State Med Soc ; 149(6): 211-4, 1997 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-9188246

RESUMO

Modified food starches were developed as a stabilizer, suspending the food particles and providing a desirable consistency, texture, and storage ability. They are used primarily in strained and junior foods and to a minor extent in infant formulas. This review discusses modified food starches because of four principal concerns. The first relates to the bioavailability of the starch itself. The second is the potential that indigestible starch may have for producing diarrheal symptoms, malabsorption, and changes in gastrointestinal flora. The third is the possibility that modified food starches might be implicated in gastrointestinal disease like Crohn's ileocolitis. The fourth is the toxicological effect of the chemicals used to modify the starch and their possible mutagenic and carcinogenic properties.


Assuntos
Alimentos Infantis , Amido , Fatores Etários , Disponibilidade Biológica , Carcinógenos , Diarreia Infantil/etiologia , Sistema Digestório/microbiologia , Humanos , Lactente , Recém-Nascido , Síndromes de Malabsorção/etiologia , Mutagênicos , Amido/efeitos adversos , Amido/farmacocinética
8.
J Gastroenterol ; 31(4): 546-51, 1996 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-8844476

RESUMO

Malnutrition is known to have adverse effects on the physiology and morphology of the liver. The aim of this investigation was to examine the effect of protein restriction on the content of plasma membrane proteins residing in the sinusoidal and bile canalicular domains of rat liver. Post-weanling rats maintained on low protein isocaloric diets showed marked growth retardation concomitant with reduced liver protein concentration compared to control animals. The content of leucine aminopeptidase, a bile canalicular enzyme, and asialoglycoprotein receptor, a sinusoidal receptor, in livers of protein-restricted rats was 66% and 50%, respectively, of control livers. In contrast, the relative concentrations of dipeptidyl peptidase IV and a cell adhesion molecule (GP 110), both canalicular proteins, were 160% and 121%, respectively, in rat livers upon protein restriction. After a 4-week rehabilitation period, the concentrations of all canalicular membrane proteins were similar to those in control livers, while the sinusoidal receptor was only 68% of control values. Protein restriction was found to adversely affect the concentrations of protein constituents, but not their localization in the hepatocyte plasma membrane. In general, altered concentrations of hepatocyte membrane proteins were reversed on the administration of a normal protein diet.


Assuntos
Dieta com Restrição de Proteínas , Fígado/metabolismo , Glicoproteínas de Membrana/metabolismo , Desnutrição Proteico-Calórica/metabolismo , Animais , Receptor de Asialoglicoproteína , Assialoglicoproteínas/metabolismo , Canalículos Biliares/metabolismo , Proteínas Sanguíneas/metabolismo , Dipeptidil Peptidase 4/metabolismo , Técnica Indireta de Fluorescência para Anticorpo , Transtornos do Crescimento/etiologia , Transtornos do Crescimento/metabolismo , Leucil Aminopeptidase/metabolismo , Masculino , Ratos , Ratos Sprague-Dawley , Receptores de Superfície Celular/metabolismo
9.
Indian J Pediatr ; 63(4): 459-71, 1996.
Artigo em Inglês | MEDLINE | ID: mdl-10832466

RESUMO

Important inroads are being made into understanding the pathophysiology of diarrhea. Clear understanding of key mechanisms should suggest new approaches to combat disease. Exciting developments are occurring in terms of super-ORS solutions, particularly with the promise of short chained glucose polymers and glutamine. Perhaps the most important development is the prospect of a good rotavirus vaccine being available before the end of the decade. Chronic diarrhea seems to be on the increase globally, probably because of the success of ORS. The mechanisms that lead to mucosal injury are elusive, and therapy still largely supportive and empiric. Celiac disease continues to be a puzzle, because of the uncomfortable feeling that a majority of cases may be missed because of atypical presentations. The successful use of long term parenteral nutrition has allowed survival and better characterization of cases that otherwise would have perished as 'lethal protracted diarrhea'. Microvillus inclusion disease may be the commonest congenital secretory diarrhea. The role of the recently reported high prevalence of glucoamlase deficiency may be important. Lastly, attention to micronutrients, particularly low vitamin A and probably zinc may prove to be important in prevention and amelioration of diarrhea and growth failure.


Assuntos
Diarreia Infantil/etiologia , Diarreia/etiologia , Criança , Pré-Escolar , Doença Crônica , Diagnóstico Diferencial , Diarreia/terapia , Diarreia Infantil/terapia , Hidratação , Humanos , Lactente
10.
Pediatr Clin North Am ; 43(2): 307-31, 1996 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-8614603

RESUMO

Diarrhea is one of the major causes of infant morbidity and mortality worldwide. Major advances in understanding the pathophysiology of chronic diarrhea and malabsorption have taken place during the past three decades. Analysis of absorptive and secretory functions of the intestine has provided some insight into the possible causes of diarrhea. This article summarizes some of the specific causes of malabsorptive diarrhea in infancy and childhood, with emphasis on pathophysiology and approaches to therapy.


Assuntos
Diarreia Infantil/etiologia , Diarreia Infantil/terapia , Síndromes de Malabsorção/etiologia , Síndromes de Malabsorção/terapia , Pré-Escolar , Doença Crônica , Diagnóstico Diferencial , Diarreia Infantil/fisiopatologia , Humanos , Lactente , Recém-Nascido , Absorção Intestinal , Síndromes de Malabsorção/fisiopatologia , Fatores de Risco
11.
Pediatr Clin North Am ; 43(1): 125-56, 1996 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-8596678

RESUMO

The main congenital anomalies of the exocrine pancreas are reviewed, and several generalized and isolated hereditary pancreatic diseases are discussed. In contrast with adults, the most frequent causes of acute pancreatitis are viral infection, drug induction, and trauma. The dissimilarities between pediatric and acute and chronic pancreatitis are emphasized.


Assuntos
Pancreatopatias , Doença Aguda , Adolescente , Criança , Pré-Escolar , Doença Crônica , Humanos , Incidência , Lactente , Recém-Nascido , Pancreatopatias/diagnóstico , Pancreatopatias/epidemiologia , Pancreatopatias/etiologia , Pancreatopatias/terapia , Pancreatite , Prognóstico , Fatores de Risco
12.
J Am Coll Nutr ; 14(3): 299-303, 1995 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-8586781

RESUMO

OBJECTIVE: The purpose of this study was to experimentally develop and clinically evaluate the safety and potential usefulness of a rice-based, short glucose polymer oral rehydration solution (ORS), Amylyte, in the treatment of acute diarrhea. Amylyte has a similar osmolality but a higher caloric density than the WHO ORS. METHODS: Different amounts of rice were cooked in 500 ml of water containing salts (1.5 g NaCl, 600 mg KCl, and 150 mg CaCl2) with varying amounts of thermophilic amylase (252,500 modified Wohlgemuth units). Amylase (25 mg) thinned the gluey rice water when 100 g of rice was cooked in 500 ml of water for 10 minutes. The volume of the resultant supernatant (Amylyte) was approximately 250 ml. A two-part, clinical case study was performed. In study 1, 12 children with diarrhea and mild dehydration were studied to determine the safety of Amylyte. In study 2, Amylyte and the WHO ORS were given to 24 and 31 male children with acute diarrhea and moderate to severe dehydration, respectively. RESULTS: 92-96% of the rice amylose and amylopectin were converted to short polymers of glucose (3-9 molecules of glucose). The osmolality of 7,994 packages used to make the Amylyte solution ranged between 277-340 mOsm/kg. The mean electrolyte composition was Na+ = 68 mEq/L, K+ = 20 mEq/L, Cl = 73 mEq/L, the caloric density 425 kcal/L and rice proteins 0.7 g/L. In study 1, 12 children with diarrhea and mild dehydration were rehydrated successfully with Amylyte ORS and the diarrhea ceased within 48 hours. None developed clinical features of carbohydrate intolerance. In study 2, an open-label clinical case study, children with acute diarrhea given Amylyte ORS had significantly less stool output than children given the WHO ORS. CONCLUSIONS: Amylyte ORS has the advantages of a higher caloric density than the WHO ORS and shares a simple preparation of appropriate osmolality and electrolyte composition. It can safely and effectively rehydrate children with acute diarrhea and dehydration.


Assuntos
Diarreia Infantil/terapia , Diarreia/terapia , Glucanos/normas , Oryza , Soluções para Reidratação/normas , Doença Aguda , Amilases/metabolismo , Amilopectina/metabolismo , Pré-Escolar , Cloretos/análise , Desidratação/epidemiologia , Desidratação/metabolismo , Desidratação/terapia , Diarreia/epidemiologia , Diarreia/metabolismo , Diarreia Infantil/epidemiologia , Diarreia Infantil/metabolismo , Glucanos/uso terapêutico , Humanos , Indonésia/epidemiologia , Lactente , Japão/epidemiologia , Masculino , Concentração Osmolar , Potássio/análise , Soluções para Reidratação/química , Soluções para Reidratação/uso terapêutico , Sódio/análise , Tailândia/epidemiologia , Estados Unidos/epidemiologia , Organização Mundial da Saúde
15.
Acta Paediatr ; 84(2): 165-72, 1995 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-7538837

RESUMO

In this study, we have compared the effects of the World Health Organization oral rehydration solution (WHO ORS) and an ORS containing short polymers of glucose (Amylyte ORS) at a high caloric density (five times) and comparable osmolality, on stool output, duration of diarrhea, weight gain and fluid and electrolyte balance, in randomized, open-labeled, controlled clinical trials in five centers. A total of 198 male children (4 months to 10 years) with acute diarrhea ( <72 h after onset) were assigned by random allocation to either WHO ORS or Amylyte ORS at five centers in Asia. Children were stratified according to grade of dehydration (mild, moderate or severe) and the initial purging rates during the first 6 h (low ( < 2 ml/kg/h), moderate (2-5 ml/kg/h) and high ( > 5 ml/kg/h) purgers). The clinical characteristics of the children in the two treatment groups were comparable. Amylyte ORS reduced stool volumes significantly in children with severe dehydration (285.4 +/- 74.2 versus 75.5 +/- 20.0 ml/kg; p < 0.05) and in children with a high initial purging rate (200.3 +/- 42.8 versus 130.5 +/- 9.1 ml/kg; p < 0.05). This was accompanied by a significant (276.4 +/- 14.6 versus 227.6 +/- 11.8 ml/kg; p < 0.01) reduction in ORS requirements in the Amylyte ORS treated group, the effect being greatest in children with severe dehydration (491.5 +/- 108.5 versus 155.7 +/- 27.3 ml/kg; p < 0.01) or high initial purging rates (394.2 +/- 66.2 versus 316.8 +/- 34.8 ml/kg; p < 0.05).(ABSTRACT TRUNCATED AT 250 WORDS)


Assuntos
Desidratação/terapia , Diarreia/complicações , Ingestão de Energia , Glucose/uso terapêutico , Oryza , Soluções para Reidratação/uso terapêutico , Doença Aguda , Amilases/uso terapêutico , Criança , Pré-Escolar , Fatores de Confusão Epidemiológicos , Desidratação/etiologia , Humanos , Lactente , Masculino , Concentração Osmolar , Polímeros/uso terapêutico , Soluções para Reidratação/química , Índice de Gravidade de Doença
16.
Pediatrics ; 95(2): 198-202, 1995 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-7530834

RESUMO

OBJECTIVE: To compare the efficacy of an oral rehydration solution (ORS) containing short polymers of glucose derived from rice (Amylyte-ORS) and five times the caloric density of current ORS to the standard glucose-ORS (World Health Organization [WHO] = ORS) in the treatment of acute diarrhea in children. METHODS: The rice ORS (Amylyte-ORS) was obtained by adding thermophilic amylase (252,500 MW units) and salts (1.5 g NaCl, 600 mg KCl, and 150 mg CaCl2) to 100 g rice and boiling for 10 minutes in 500 mL water. This yields 250 mL Amylyte-ORS, which contains 92% to 96% short-chain glucose polymers, three to nine molecules in length, and provides 425 kcal/L, compared to 80 kcal/L for the WHO-ORS. One hundred forty-four male children, 4 months to 3 years of age, presenting with acute diarrhea and mild, moderate, or severe dehydration, were assigned by random allocation to receive either WHO-ORS or Amylyte-ORS. Data from 127 children were analyzed (57 received the WHO-ORS and 70 the Amylyte-ORS). Two children given Amylyte-ORS and 15 given the WHO-ORS were not included in the analysis because of improperly collected data or lost urine or fecal specimens. None were given antibiotics during the study. Free water and feeding were allowed after the children were rehydrated. RESULTS: The clinical characteristics of the children in the two treatment groups were comparable. Five children who received the WHO-ORS and three children given Amylyte-ORS were treatment failures. Amylyte-ORS reduced diarrhea duration by 15% (41.4 +/- 2.5 vs 34.7 +/- 1.8 hours; P < .03) compared to the WHO-ORS, regardless of the severity of dehydration. In the Amylyte-treated group, ORS requirements were significantly less (234 +/- 15.2 vs 295 +/- 17.6 mL/kg; P < .01) and weight gain was significantly more (367.7 +/- 45.1 vs 199.2 +/- 38.2 g; P < .01) than in those given the WHO-ORS. The net intestinal fluid balance and total body fluid balance were similar in the two groups. CONCLUSIONS: Amylyte-ORS effectively rehydrates children with acute diarrhea, reduces diarrhea duration, decreases ORS requirements, and improves weight gain compared to the WHO-ORS.


Assuntos
Desidratação/terapia , Diarreia Infantil/terapia , Diarreia/terapia , Hidratação , Glucose , Oryza , Soluções para Reidratação/uso terapêutico , Doença Aguda , Amilases , Bicarbonatos/química , Bicarbonatos/uso terapêutico , Pré-Escolar , Glucose/química , Glucose/uso terapêutico , Humanos , Lactente , Masculino , Cloreto de Potássio/química , Cloreto de Potássio/uso terapêutico , Soluções para Reidratação/química , Cloreto de Sódio/química , Cloreto de Sódio/uso terapêutico , Fatores de Tempo , Resultado do Tratamento , Equilíbrio Hidroeletrolítico , Aumento de Peso
17.
Res Commun Mol Pathol Pharmacol ; 87(1): 21-6, 1995 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-7735726

RESUMO

We investigated soluble interleukin-2 receptor (sIL-2R), soluble CD8 (sCD8) and soluble intercellular adhesion molecule-1 (sICAM-1) levels in the sera of patients with non-malignant diseases believed to have an autoimmune or immunosuppressive component, Crohn's disease, celiac disease, and systemic lupus erythematosus (SLE). Sera of healthy blood donors served as controls. All samples were analyzed by commercial ELISA kits for sIL-2R, sCD8, and sICAM-1. Our control level of sIL-2R (x +/- S.D) was 395 +/- 84 units/ml, sCD8 (x +/- S.D.) 263 +/- 90 units/ml and sICAM-1 405 +/- 118 ng/ml. The 8 Crohn's disease patients had an average sIL-2R level of 920 +/- 329 units/ml, and an average sCD8 level of 355 +/- 91 units/ml, and sICAM-1 952 +/- 329 ng/ml. The four celiac disease patients had an average sIL-2R concentration of 1740 +/- 1071 units/ml, a sCD8 level of 460 +/- 320 units/ml and sICAM-1 1221 +/- 720 ng/ml. The three systemic lupus erythematosus patients had an average sIL-2R of 1023 +/- 123 units/ml, and an average sCD8 of 395 +/- 69 units/ml, and sICAM-1 1153 +/- 219 ng/ml. Thus, sIL-2R and sICAM-1 were significantly elevated over control levels in all 3 patient groups, and sCD8 was mildly elevated. These results indicate enhanced immune activation which may be a common feature in the onset and/or progression of these idiopathic illnesses.


Assuntos
Antígenos CD8/sangue , Doença Celíaca/sangue , Doença de Crohn/sangue , Molécula 1 de Adesão Intercelular/sangue , Lúpus Eritematoso Sistêmico/sangue , Receptores de Interleucina-2/metabolismo , Adulto , Biomarcadores/sangue , Ensaio de Imunoadsorção Enzimática , Humanos
19.
Arch Pathol Lab Med ; 118(10): 1002-6, 1994 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-7944883

RESUMO

Wilms' tumors are embryonic neoplasms that have been proposed to originate from the metanephric blastema and are capable of divergent epithelial and mesenchymal differentiation. Neuroepithelial differentiation in these tumors remains controversial. The aim of this study was to examine the phenotypic profile of certain neuronal and glial antigenic determinants in a series of 21 Wilms' tumors. Immunohistochemical studies were performed by using monoclonal antibodies against the neuronal class III beta-tubulin isotype (beta III), the phosphorylated and phosphorylation-independent epitopes of neurofilament protein, and synaptophysin; antisera to gamma-enolase (neuron-specific enolase) glial fibrillary acidic protein, and S100 protein were also used. Foci of neoplastic cells with neurite-like processes that exhibited intense beta III staining were demonstrated in blastemalike areas of three of 21 tumors. In one case, Homer Wright rosettes (stained for beta III) were identified. Areas of abortive neuritic development were also labeled with antibodies to gamma-enolase. No reactivity was obtained in these foci for phosphorylated and phosphorylation-independent epitopes of neurofilament protein, synaptophysin, glial fibrillary acidic protein, and S100 protein. The remainder of the tumors (18 of 21) were negative with the panel of neural markers. Our results indicate that divergent neuroblastic differentiation, evidenced as early neoplastic neuritogenesis, may be present in the blastematous component of Wilms' tumor subsets.


Assuntos
Neoplasias Renais/patologia , Neuritos/fisiologia , Tubulina (Proteína)/análise , Tumor de Wilms/patologia , Anticorpos Monoclonais , Humanos , Técnicas Imunoenzimáticas , Neoplasias Renais/fisiopatologia , Neuritos/química , Neuritos/patologia , Fatores de Tempo , Tumor de Wilms/fisiopatologia
20.
Biochim Biophys Acta ; 1222(2): 215-22, 1994 Jun 30.
Artigo em Inglês | MEDLINE | ID: mdl-8031857

RESUMO

This study was undertaken to assess the short-term effects of EGF on sodium and glucose uptake, glucose metabolism and Na+/K(+)-ATPase activity in isolated enterocytes of rats. Jejunal cells exposed to EGF had a significantly greater total uptake of sodium compared to controls after 6 min. Kinetic analysis of glucose transport across BBMV's demonstrated similar Km values but a significant increase of the Vmax in vesicles prepared from cells first exposed to EGF as compared to controls. EGF was also associated with a significant increase in glucose metabolism of jejunal enterocytes after 15 min. The activity of Na+/K(+)-ATPase increased in jejunal enterocytes exposed to EGF. The increase in Na+/K(+)-ATPase activity of the cells following EGF exposure was not accompanied by an increase in immunodetectable total or assembled Na+/K(+)-ATPase protein. EGF's effect on enzyme activity was abolished by removing NaCl from the incubation solution, and by preincubating the enterocytes with phlorizin prior to addition of EGF. Preincubation with amiloride did not inhibit the effect of EGF on Na+/K(+)-ATPase. The results confirm that EGF promotes uptake of both sodium and glucose by the jejunal mucosal cells, and suggest the effect of EGF on glucose and sodium is mediated through the brush-border membrane glucose-sodium transporter. The increase in Na+/K(+)-ATPase activity that occurs with EGF appears to be secondary to a rise in intracellular Na+ concentration. The short-term effects of EGF on glucose and sodium transport by the small intestine may have potential therapeutic implications.


Assuntos
Fator de Crescimento Epidérmico/farmacologia , Jejuno/efeitos dos fármacos , Proteínas de Transporte de Monossacarídeos/metabolismo , Amilorida/farmacologia , Animais , Células Epiteliais , Epitélio/efeitos dos fármacos , Epitélio/metabolismo , Feminino , Glucose/metabolismo , Jejuno/citologia , Jejuno/metabolismo , Florizina/farmacologia , Ratos , Ratos Sprague-Dawley , Sódio/metabolismo , ATPase Trocadora de Sódio-Potássio/metabolismo
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