Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: UMLS:C0042963 (vomiting)
 31,883 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

An acute zinc chloride poisoning due to ingestion is a rare event. Symptoms include: corrosive pharyngeal lesions, vomiting and lethargy. Laboratory findings may include hyperglycaemia, hyperamylasaemia, exocrine pancreatic insufficiency and renal insufficiency. This case report describes an accidental zinc chloride poisoning in a child, with lethargy as the most pronounced clinical sign. Clinical evaluation and chelator therapy are discussed.
 ...
PMID:An acute zinc chloride poisoning in a child: was chelator therapy effective? 1040 22

In previous trials, the orally active iron chelator deferiprone (L1) has been associated with sporadic agranulocytosis, milder forms of neutropenia and other side-effects. To determine the incidence of these events, we performed a multicentre prospective study of the chelator. Blood counts were performed weekly, and confirmed neutropenia mandated discontinuation of therapy. Among 187 patients with thalassaemia major, the incidence of agranulocytosis (neutrophils < 0.5 x 109/l) was 0.6/100 patient-years, and the incidence of milder forms of neutropenia (neutrophils 0.5-1.5 x 109/l) was 5.4/100 patient-years. All cases of neutropenia resolved after interruption of therapy. Neutropenia occurred predominantly in non-splenectomized patients. Nausea and/or vomiting occurred early in therapy, was usually transient and caused discontinuation of deferiprone in three patients. Mild to moderate joint pain and/or swelling did not require permanent cessation of deferiprone and occurred more commonly in patients with higher ferritin levels. Mean alanine transaminase (ALT) levels rose during therapy. Increased ALT levels were generally transient and occurred more commonly in patients with hepatitis C. Persistent changes in immunological studies were infrequent, although sporadic abnormalities occurred commonly. Mean zinc levels decreased during therapy. Ferritin levels did not change in the overall group but decreased in those patients with baseline levels > 2500 microgram/l. This study characterized the safety profile of deferiprone, and, under the specific conditions of monitoring, demonstrated that agranulocytosis is less common than previously predicted.
 ...
PMID:Safety profile of the oral iron chelator deferiprone: a multicentre study. 1069 60

A double-blind placebo controlled trial was conducted by Melaku Umeta et al. to examine the effect of a zinc supplement on growth, body composition, appetite, and morbidity in stunted and nonstunted rural Ethiopian infants aged 6-12 months. The infants were randomly assigned to a placebo or zinc supplement (zinc sulfate) administered as a syrup 6 days a week for 6 months. The study showed significant effects of zinc supplement on linear and ponderal growth in stunted and nonstunted infants. However, no significant changes in mid-arm circumference or triceps skinfolds were reported in the supplemented stunted infants despite improvements in their appetite. The positive growth response was attributed, in part, to a secondary impact of zinc on growth resulting from reductions in the incidence of anorexia, cough, diarrhea, fever, and vomiting in the stunted children. This study has shown that zinc is the primary growth-limiting nutrient during infancy in African children. However, whether zinc is the primary growth-limiting nutrient during infancy will depend on the ecological setting. Influencing factors include breast-feeding practices, dietary intake, infections, diarrhea, and prenatal and maternal malnutrition. Therefore, unless zinc is the primary growth-limiting nutrient, universal zinc supplementation will not improve the growth of stunted children.
 ...
PMID:Zinc supplementation for infants. 1088 52

A squirrel monkey (Saimiri sciureus) presented with wasting, vomiting and diarrhoea. Haematology revealed elevation of creatinine phosphokinase, lactic dehydrogenase, alanine aminotransferase, amylase and lipase, together with azotaemia and hypoalbuminaemia. Prominent findings were chronic pancreatitis with acinar and ductal plugs, granulomatous and necrotizing peripancreatic steatitis, degenerative myopathy, testicular atrophy, candidiasis and bacterial necrotizing glossitis. Antioxidant analyses revealed low concentrations of serum vitamin E (and apparently A), hepatic selenium and hair zinc. Pancreatitis may have caused malabsorption and maldigestion, associated with deficiency of multiple antioxidants.
 ...
PMID:Antioxidant status in a squirrel monkey (Saimiri sciureus) with chronic pancreatitis and degenerative myopathy. 1103 77

Staphylococcal enterotoxins are superantigen exotoxins that mediate food poisoning and toxic shock syndrome in humans. Despite their structural and functional similarities, superantigens display subtle differences in biological properties and modes of receptor binding as a result of zinc atoms bound differently in their crystal structures. For example, the crystal structures of the staphylococcal enterotoxins in the type C serogroup (SECs) contain a zinc atom coordinated by one aspartate and two histidine residues from one molecule and another aspartate residue from the next molecule, thus forming a dimer. This type of zinc ligation and zinc-mediated dimerization occurs in several SECs, but not in most other staphylococcal enterotoxin serogroups. This prompted us to investigate the potential importance of zinc in SEC-mediated pathogenesis. Site-directed mutagenesis was used to replace SEC zinc binding ligands with alanine. SEC mutants unable to bind zinc did not have major conformational alterations although they failed to form dimers. Zinc binding was not essential for T cell stimulation, emesis, or lethality although in general the mutants were less pyrogenic. Thus the zinc atom in SECs might represent a non-functional heavy atom in an exotoxin group that has diverged from related bacterial toxins containing crucial zinc atoms.
 ...
PMID:Zinc-mediated dimerization and its effect on activity and conformation of staphylococcal enterotoxin type C. 1193 96

Peroxidation of the membrane lipid structure of red blood cell leads to haemolysis and anaemia in haemodialysis patients. Dietary constituents of antioxidant vitamins and trace elements may play an important role in protecting against oxidant damage. In this study, the effects of supplementation of vitamin C and zinc on osmotic fragility and lipid peroxidation of erythrocytes were investigated in 34 zinc-deficient haemodialysis patients. Sixteen sex- and age-matched normal volunteers acted as controls. Patients were randomized to receive vitamin C (250 mg day(-1)), zinc (20 mg day(-1)) or a placebo treatment for 3 months. The levels of vitamin C, zinc, malondialdehyde (MDA) and osmotic fragility were measured initially and 3 months after supplementation. Mean serum concentration of vitamin C and zinc increased significantly in the groups at the end of the respective study periods. Supplementation with vitamin C and zinc improved osmotic fragility, and decreased the level of MDA in the groups, but some side-effects (i.e. nausea, vomiting, fever, muscle pain, weakness) were observed during the zinc treatment. The results showed that the supplementation of both treatments decreased osmotic fragilty and MDA in zinc-deficient haemodialysis patients. However, vitamin C treatment was found to be safer than zinc supplementation.
 ...
PMID:Effect of vitamin C and zinc on osmotic fragility and lipid peroxidation in zinc-deficient haemodialysis patients. 1197 3

Pentoxifylline, a methylxanthine derivative and nonspecific type 4 phosphodiesterase inhibitor, has been used to improve survival of animals with sepsis and to attenuate lung injury in acute lung inflammation. The purpose of this study was to examine whether pentoxifylline would inhibit the expression of inflammatory cytokines, particularly tumor necrosis factor alpha (TNF), and thereby decrease the pathophysiology of acute porcine pleuropneumonia. E. coli lipopolysaccharide (LPS) and bacterial extracts of A. pleuropneumoniae--induced elevations in TNF mRNA which were fully abrogated by addition of pentoxifylline in both alveolar macrophage and neutrophil cultures. A 30% reduction in the level of LPS-induced interleukin (IL)-1beta mRNA levels also was achieved in macrophages. Pentoxifylline did not affect either IL-1alpha or IL-8 expression in vitro. Pentoxifylline therapy in vivo significantly reduced the number of band neutrophils in swine but did not reduce the pathology associated with pleuropneumonia, including changes in serum zinc, iron, or haptoglobin. Neither did it alter TNF, IL-1, IL-6, or IL-8 expression. Measurement of pentoxifylline and its metabolites in pig sera suggested that efficacious doses of pentoxifylline were probably not achieved in vivo. However, subcutaneous doses of pentoxifylline higher than 25 mg/kg produced transient diarrhea, vomiting, and tremors. These results suggest that pentoxifylline is an effective pharmacological tool for the dissection of cytokine regulation in vitro, but inhibitory concentrations may not be achievable for in vivo pharmacological use in swine.
 ...
PMID:Effects of pentoxifylline on inflammatory cytokine expression and acute pleuropneumonia in swine. 1199 42

Acute diarrhea is still responsible for about 40% of diarrhea-associated deaths, and oral rehydration therapy (ORT) does not actually reduce the duration of diarrhea. A species of lactobacilli specific for the human gut was first isolated in 1987, Lactobacillus casei strain GG, and several trials have used colonization of the gut by this organism as an adjunct to ORT. A placebo-controlled, triple-blind study in Pakistan showed a significant reduction in the number of children with persistent watery stools at 48 hours, as well as a reduction in stool output and vomiting. Dioctahedral smectite (DS) has been found to adsorb viruses, bacteria, and toxins resulting in the protection of gut mucosa. A randomized double-blind trial (placebo-controlled) studied outcome in 90 males, 3-24 months old, with acute diarrhea of or= 5 days duration. After rehydration, patients were given either 1.5 g of DS or placebo 4 times a day for 3 days. At 48 hours, 42% of the treatment group were free from diarrhea, as opposed to 13% of the placebo group, and at 3.5 days 20% of the placebo group still had diarrhea, as opposed to none in the treatment group. Mean duration of diarrhea in the treatment groups was 54.1 hours (placebo 72.9 hours, p 0.001). However, mean stool output was similar (97.9 g/kg vs. 110.9 g/kg). Bismuth subsalicylate (BSS) has been frequently used in adults with benefits in both prevention and treatment. 142 Chilean children 4-36 months old were randomized to receive either placebo or BSS (100 mg/kg/day) 5 times a day for 5 days. Stools were normal in the E. coli group by 72 hours as opposed 139 hours in the placebo group (p 0.01), while rotavirus-infected stools normalized in 57.5 hours, as opposed to 104.5 hours in the placebo group. Other effective approaches include micronutrient supplementation including zinc and folate.
 ...
PMID:Paediatrics Forum. Acute diarrhoea. 1231 47

Gastric cancer continues to be the second cause of cancer-related mortality in the world. Surgery is the only potentially curative therapy, although the adverse effects of surgery are considerable and include digestive symptoms, loss of appetite and malnutrition. Our study included 45 patients subjected to gastrectomy who were under treatment at our unit during 2000. The data given here refer to their first visit following surgery. The most frequent complications were diarrhoea (31%), pain (29%) and early dumping (24%). Other complications found were late dumping, nausea/vomiting and dysphagia. Anorexia appeared in 49% and 29% presented a negative attitude towards food. These complications give rise to insufficient food intake, leading to malnutrition, mainly marasmic in nature. Only 7% of the patients were normonourished, with 86% presenting slight or moderate malnutrition and 7% severe malnutrition. The mean Body Mass Index (BMI) of these patients was 20 +/- 3 kg/m2. The most frequent analytical alterations were anaemia with ferropenia and b12 deficit, and a reduction in the levels of zinc and retinol transporting protein. Many patients had impaired quality of life; 43% did not leave home and only 13% were able to work. Three groups were established depending on the time that had passed since the gastrectomy was performed before the first nutritional assessment (less than 3 months, from three months to a year, and over one year), without significant differences being found in any of the parameters studied. In this article we include recommendations for the nutritional handling and treatment of patients following gastrectomy.
 ...
PMID:[Nutritional evaluation in patients with total gastrectomy]. 1242 99

This report describes the clinical and pathological findings in a case of acute zinc poisoning in a young dog. The puppy suffered four days of progressively more severe vomiting and diarrhoea. Jaundice and pale mucous membranes, severe haematemesis and haemoglobinuria were other findings. Despite intensive therapy, the dog died a few hours after hospitalisation. Postmortem examination revealed a metallic foreign body in the stomach, catarrhal gastritis, hepatomegaly and enlarged, dark kidneys. Histology showed hepatic centrilobular vacuolar degeneration, haemoglobinuric nephrosis with early tubular necrosis, haemosiderosis and extramedullary haematopoiesis, as well as neuronal damage. The foreign body was mainly composed of zinc. Plasma zinc values were markedly raised (34.5 microg/ml; normal range 0.8 to 1.0 microg/ml). Pathophysiological mechanisms of zinc poisoning are discussed.
 ...
PMID:Clinical and pathological findings of acute zinc intoxication in a puppy. 1248 42


<< Previous 1 2 3 4 5 6 7 8 9 Next >>