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Nasal foreign bodies: description of types and complications in 420 cases.

UNLABELLED: Nasal cavities foreign bodies are common accidents in children, sometimes leading, in accordance with the literature, to complications such as epistaxis and bronchoaspiration. Diagnosis is often made with anterior rhinoscopy, but sometimes nasal fibroendoscopy and imaging may be useful. AIM: To evaluate 420 cases of nasal foreign bodies removed in ENT Service of Souza Aguiar Hospital, Rio de Janeiro, as related to sex, age, type of foreign body and complications. MATERIALS AND METHOD: 420 cases of nasal foreign bodies removed in the ENT service of Souza Aguiar Hospital between December 1992 and December 1998 were evaluated according to the parameters related above. RESULTS: We found higher incidence between 0 and 4 years of age, and the most frequently found foreign bodies were foam fragments, plastic pieces of little toys, beans and paper fragments. Complications occurred in 9.05% of the cases, epistaxis and vestibulitis being the commonest. CONCLUSION: Nasal foreign bodies are especially found between the ages of 0 and 4 years. In our study, foam fragments and small plastic objects were the most frequent foreign bodies found. Complications were found in 9.05% of the cases, headed by epistaxis and nasal vestibulitis.

Adolescent↗

Characterization of cytoplasmic and chloroplast 5S ribosomal ribonucleic acid from broad-bean leaves.

Green leaves of the broad bean (Vicia faba) contain two 5S RNA components that can be separated from each other by polyacrylamide-gel electrophoresis. The major component is located in the larger subunit of cytoplasmic ribosomes, whereas the minor component occurs in the larger subunit of chloroplast ribosomes. Their electrophoretic mobilities relative to those of Escherichia coli 5S RNA (120 nucleotides) and plant 4S RNA (78 nucleotides) suggest that they consist of 118 and 122 nucleotide residues respectively. Thermal ;melting' profiles of plant cytoplasmic and chloroplast 5S RNA species at 260nm indicate the similarity of their secondary structures, not only to each other, but also to those of E. coli and mammalian 5S RNA species. The base compositions of the two plant 5S RNA species have more in common with each other than with the corresponding molecules from either E. coli or mammalian cells.

Acrylates↗

Phytoestrogens as bioactive ingredients in functional foods: Canadian regulatory update.

Some food products naturally contain phytoestrogens, but there are few in Western diets that are significant sources. The foods that are the most significant sources are soy beans, containing isoflavones, and flaxseed, which contains lignans. These foods have, however, until recently been relatively little used in Canada and the United States in the human diet. While the Japanese diet contains from 20 to 80 mg of isoflavones per day, Canadian and U.S. diets tend to be below 1 mg/day in the absence of soy protein. The number of foods sold in the West that have ingredients derived from soybeans has been increasing. Many of these have soybean oil, soy protein, or other ingredients serving functional roles in the food. However, with increasing interest among consumers in dietary choices that help to improve health and reduce risk of disease, products in which soy is featured are quite readily available, and it is common, at least in Canada, to find bread and other bakery products with flaxseed added. Soy foods sales in the United States increased at a 15% compounded annually growth rate between 1992 and 2003, with a major increase occurring between 2000 and 2001 (1). Growth rates are reported to have declined somewhat in 2004 (2). The U.S. Food and Drug Administration approval of a health claim associating soy protein intake with reduced risk of heart disease in 1999 is attributed with fueling the very sizable growth since 2000. The claim identifies 25 g/day as the amount needed to derive the claimed health benefit. Because the isoflavone content of soy products is highly variable, depending on the method of processing (3), it is difficult to estimate quantitatively the impact of the increased rate of soy product consumption on soy isoflavone intake, although an overall increase can be expected. In contrast,

Canada↗

Critical control points for foods prepared in households whose members had either alleged typhoid fever or diarrhea.

Hazard analysis of food preparation practices were conducted in four households and eleven others were visited to survey both food preparation practices and environmental conditions. Households selected had members who were suffering from either diarrhea of unknown etiology or alleged typhoid fever. Hazard analyses and sanitary surveys included gathering data on time-temperature exposures of foods, collecting samples of food and drinking water, sampling sewage or drains, and obtaining stool specimens from persons with diarrhea and from family controls. Food samples were tested for aerobic mesophilic colony counts and common foodborne pathogens; specimens were tested for Salmonella, Shigella, Campylobacter and Yersinia. Campylobacter was isolated from two persons purported to have diarrhea, but neither Salmonella, Shigella nor Yersinia were recovered from alleged cases or controls. Salmonella agona was recovered from a latrine. Most foods were cooked to internal temperatures to or near to boiling. Those not promptly eaten were held at ambient room or outside temperatures until a subsequent meal, until a family member returned home, or until lunch time when taken to the fields. During these intervals, microorganisms multiplied and mesophilic aerobic organisms increased often reaching 10(8)/g or greater before consumption. None of these foods were reheated before eating. Bacillus cereus was isolated from 4 of 10 samples; one sample of 'moro' (beans and rice) exceeded 10(6)/g, two other samples exceeded 10(3)/g. Staphylococcus aureus was isolated from 7 of 14 samples, one exceeded 10(5)/g. Fecal coliforms were isolated from 8 of 14 food samples, five exceeded 10(5)/g. Neither Salmonella nor Shigella were isolated from any food, the community water supplies or from vessels of water within houses. Fecal coliform counts of water were less than 3/ml, except one sample from a clay vessel (9/ml). Risks associated with cooked foods which were not promptly eaten appeared to be greater than that associated with water.

Adolescent↗

Plant foods in the management of diabetes mellitus: vegetables as potential hypoglycaemic agents.

Vegetables are among the numerous plant adjuncts tried for the treatment of diabetes mellitus. A few vegetables that are commonly consumed in India have been claimed to possess antidiabetic potency. In recent years, there has been a renewed interest to screen such plant food materials, for a possible beneficial use. Considerable amount of work has been carried out in this regard with bitter gourd (Momordica charantia) and ivy gourd (Coccinia indica) both in experimental animals and human diabetic subjects. Majority of these studies have documented the beneficial effect of the fruit of bitter gourd and leaf of ivy gourd when administered orally as a single dose. The hypoglycaemic influence is claimed to be mediated through an insulin secretagogue effect or through an influence on enzymes involved in glucose metabolism. The limited number of studies on other vegetables such as cabbage (Brassica oleracia), green leafy vegetables, beans and tubers have shown the beneficial hypoglycaemic influence in both experimental animals and humans. There is scope for more extensive research in this area, especially to examine the long term beneficial effect of dietary vegetables, to identify the active principle, and to understand the mechanism of action, which is at present unclear. Since diet forms the mainstay in the management of diabetes mellitus, there is scope for exploiting the antidiabetic potency of vegetables to the maximum extent. Such plant food adjuncts possessing hypoglycaemic activity appear to hold promise as potential antidiabetic agents.

Animals↗

Distinct annexin subfamilies in plants and protists diverged prior to animal annexins and from a common ancestor.

Annexin homologues in the kingdoms of Planta and Protista were characterized by molecular sequence analysis to determine their phylogenetic and structural relationship with annexins of Animalia. Sequence fragments from 19 plant annexins were identified in sequence databases and composite sequences were also assembled from expressed sequence tags for Arabidopsis thaliana. Length differences in protein aminotermini and evidence for unique exon splice sites indicated that plant annexins were distinct from those of animals. A third annexin gene of Giardia lamblia (Anx21-Gla) was identified as a distant relative to other protist annexins and to those of higher eukaryotes, thus providing a suitable outgroup for evolutionary reconstruction of the family tree. Rooted evolutionary trees portrayed protist, plant, and Dictyostelium annexins as early, monophyletic ramifications prior to the appearance of closely related animal annexin XIII. Molecular phylogenetic analyses of DNA and protein sequence alignments revealed at least seven separate plant subfamilies, represented by Anx18 (alfalfa, previously classified), Anx22 (thale cress), Anx23 (thale cress, cotton, rape and cabbage), Anx24 (bell pepper and tomato p34), Anx25 (strawberry, horseradish, pea, soybean, and castor bean), Anx26-Zma, and Anx27-Zma (maize). Other unique subfamilies may exist for rice, tomato p35, apple, and celery annexins. Consensus sequences compiled for each eukaryotic kingdom showed some breakdown of the "annexin-fold" motif in repeats 2 and 3 of protist and plant annexins and a conserved codon deletion in repeat 3 of plants. The characterization of distinct annexin genes in plants and protists reflects their comparable diversity among animal species and offers alternative models for the comparative study of structure-function relationships within this important gene family.

Amino Acid Sequence↗

Toxigenic fungi: which are important?

Growth of commonly occurring filamentous fungi in foods may result in production of mycotoxins, which can cause a variety of ill effects in humans, from allergic responses to immunosuppression and cancer. According to experts, five kinds of mycotoxins are important in human health around the world: aflatoxins, ochratoxin A, fumonisins, certain trichothecenes, and zearalenone. These toxins are produced by only a few species of fungi, in a limited range of commodities. Aflatoxins are potent carcinogens, produced by Aspergillus flavus and A. parasiticus in peanuts, maize and some other nuts and oilseeds. Ochratoxin A is a kidney toxin and probable carcinogen. It is produced by Penicillium verrucosum in cereal grains in cold climates, by A. carbonarius in grapes, wines and vine fruits, and by A. ochraceus sometimes in coffee beans. Fumonisins, which may cause oesophageal cancer, are formed by Fusarium moniliforme and F. proliferatum, but only in maize. Trichothecenes are highly immunosuppressive and zearalenone causes oestrogenic effects; both are produced by F. graminearum and related species. Current reporting probably underestimates the effect of mycotoxins as a cause of human mortality.

Aspergillus↗

Plant and microbial toxic proteins as hemilectins: emphasis on canatoxin.

Ribosome-inactivating plant toxic proteins and ADP-ribosylating microbial toxins share a common structural organization. These proteins present domains displaying different biological properties: a target cell membrane-binding component (B-subunit or haptomer) and an enzymatically active component (A-subunit or effectomer). Interactions of these toxins with the target cells are mediated by the hemilectin-like haptomer, which recognizes and specifically binds to a given glycoderivative present at the cell surface. After binding the holoprotein is internalized via endocytosis. Inside the endocytic compartment the toxin is processed to release its effectomer moiety which catalytically modifies a cytoplasmic component, and this step accounts for its toxic effect. The structural relationships between toxic hemilectins and plant lectins are discussed, with emphasis on the example of canatoxin and concanavalin A, both present in the seeds of the jack bean Canavalia ensiformis. Contrary to other plant toxic proteins, which inhibit protein synthesis, canatoxin-induced toxicity includes central nervous system-mediated effects. In vivo as well as in vitro canatoxin acts as lipoxygenase-mediated secretagogue in several types of cells: blood platelets, mast cells, pancreatic islets and synaptosomes. Elucidation of structure vs biological activity relationships of canatoxin and other toxic proteins may provide data for their utilization as pharmacological tools and as therapeutic agents.

Animals↗

Proton pumping inorganic pyrophosphatase of endoplasmic reticulum-enriched vesicles from etiolated mung bean seedlings.

Endoplasmic reticulum (ER)-enriched vesicles from etiolated hypocotyls of mung bean seedlings (Vigna radiata) were successfully isolated using Ficoll gradient and two-phase (polyethylene glycol-dextran) partition. The ER-enriched vesicles contained inorganic pyrophosphate (PPi) hydrolysis and its associated proton translocating activities. Antiserum prepared against vacuolar H+-pyrophosphatase (V-PPase, EC 3.6.1.1) did not inhibit this novel pyrophosphatase-dependent proton translocation, excluding the possible contamination of tonoplast vesicles in the ER-enriched membrane preparation. The optimal ratios of Mg2+/PPi (inorganic pyrophosphate) for enzymatic activity and PPi-dependent proton translocation of ER-enriched vesicles were higher than those of vacuolar membranes. The PPi-dependent proton translocation of ER-enriched vesicles absolutely required the presence of monovalent cations with preference for K+, but could be inhibited by a common PPase inhibitor, F-. Furthermore, ER H+-pyrophosphatase exhibited some similarities and differences to vacuolar H+-PPases in cofactor/substrate ratios, pH profile, and concentration dependence of F-, imidodiphosphate (a PPi analogue), and various chemical modifiers. These results suggest that ER-enriched vesicles contain a novel type of proton-translocating PPase distinct from that of tonoplast from higher plants.

Cations, Divalent↗

Pharmacokinetics of dactinomycin in a pediatric patient population: a United Kingdom Children's Cancer Study Group Study.

PURPOSE: Dactinomycin (actinomycin D) is an antitumor antibiotic used routinely to treat certain pediatric and adult cancers. Despite concerns over the incidence of toxicity, little is known about the pharmacology of dactinomycin. A study was done to investigate dactinomycin pharmacokinetics in children. EXPERIMENTAL DESIGN: Dactinomycin was administered to 31 patients by bolus i.v. infusion, at doses of 0.70 to 1.50 mg/m2. Plasma concentrations were determined by liquid chromatography-mass spectrometry up to 24 hours after drug administration and National Cancer Institute Common Toxicity Criteria was assessed. RESULTS: Pharmacokinetic data analysis suggested that a three-compartment model most accurately reflected dactinomycin pharmacokinetics. However, there was insufficient data available to fully characterize this model. A median peak plasma concentration (Cmax) of 25.1 ng/mL (range, 3.2-99.2 ng/mL) was observed at 15 minutes after administration. The median exposure (AUC0-6), determined in 16 patients with sampling to 6 hours, was 2.67 mg/L.min (range, 1.12-4.90 mg/L.min). After adjusting for body size, AUC0-6 and Cmax were positively related to dose (P = 0.03 and P = 0.04, respectively). Patients who experienced any level of Common Toxicity Criteria grade had a 1.46-fold higher AUC0-6, 95% confidence interval (1.02-2.09). AUC0-6 was higher in patients <40 kg, possibly indicating a greater toxicity risk. CONCLUSIONS: Data presented suggest that dosing of dactinomycin based on surface area is not optimal, either in younger patients in whom the risk of toxicity is greater, or in older patients where doses are capped.

Adolescent↗

Changes in antimicrobial resistance of Salmonella isolated from humans in the United States.

Changes were examined that occurred in the antimicrobial susceptibility between 1979-1980 and 1984-1985 of Salmonella organisms isolated from humans who resided in a random sample of counties in the United States. Resistance to one or more antimicrobials rose significantly from 16% (82 of 511 isolates) in 1979-1980 to 24% (117 of 485 isolates) in 1984-1985. In addition, statistically significant increases occurred in the proportion of organisms resistant to only one antimicrobial (from 4% to 9%), the rate of resistance of Salmonella typhimurium (from 14% to 26%), and the rate of resistance to tetracycline. For one commonly occurring serotype, Salmonella heidelberg, the proportion of resistant strains fell significantly from 67% in 1979-1980 to 35% in 1984-1985. When epidemiologic characteristics of patients were examined, previous use of antimicrobials for treatment of other illnesses was a significant risk factor for acquiring clinically important infections with antimicrobial-resistant Salmonella. Changes detected in the antimicrobial resistance of Salmonella during this time will ultimately affect the efficacy of antimicrobial therapy in treating human disease.

Drug Resistance, Microbial↗

Clinical and immunological aspects of food allergy in childhood. I. Estimation of IgG, IgA and IgE antibodies to food antigens in children with food allergy and atopic dermatitis.

Sixtynine children with case histories of food intolerance and 30 food tolerant children with atopic dermatitis have been investigated regarding serum IgE levels and IgE-, IgG, and IgA-antibodies to some common foods. Children with food intolerance had significantly higher IgE levels and to a larger extent specific IgE antibodies to the tested allergens. IgE antibodies to cow's milk were found in 71% of the children with histories of cow's milk allergy but occurred also in similar titers in 27% of milk tolerant children with other food allergies. IgE antibodies to egg-white occurred in 88% of egg allergies, but low and moderate titers were also found in 17% of children without food intolerance. However, all children with high titers had symptoms of egg allergy. IgE antibodies to the fish allergen were only found in fish allergic children while IgE antibodies to the fish allergen were only found in fish allergic children while IgE antibodies to soy-bean and green peas were found less consistently. The level of serum IgA antibodies to milk was similar in both groups. The IgG antibody titers to all tested food antigens seemed to parallel the IgE antibody titer to the same food. It was not possible to correlate the IgG antibody titers to symptoms.

Adolescent↗

Genotype and phenotype correlation in glucose-6-phosphate dehydrogenase deficiency.

BACKGROUND AND OBJECTIVES: Glucose-6-phosphate dehydrogenase (G6PD) deficiency is the most common erythrocytic enzymatic disorder in Italy and is characterized by wide clinical, biochemical and molecular variability. We studied the clinical and hematologic data from 54 G6PD-deficient, unrelated males from the Apulia region. DESIGN AND METHODS: Analyses for enzymatic activity, G6PD electrophoresis and molecular typing were performed on all subjects. Thirty-nine subjects (72.2%) showed a severe G6PD deficiency (<10% residual enzymatic activity) and 15 subjects (27.8%) a moderate deficiency (10--60% residual activity). RESULTS: The Mediterranean variant was found in 48.2% of cases, the Seattle variant in 33.3%, the A- variant in 7.45% and the Montalbano variant in 3.7%; the variant was not identified in four subjects. Thirty-two patients (59.2%) were asymptomatic; of these, 37.04% demonstrated acute hemolytic crises induced mainly by ingestion of fava beans and 3.7% had had neonatal jaundice. Acute hemolytic anemia was found in 53.8% of subjects with the Mediterranean variant, in 5.5% with the Seattle variant, in 100% with the A-variant and 0% with the Montalbano variant. INTERPRETATION AND CONCLUSIONS: Enzymatic activity was shown to be a poor predictive parameter of acute hemolytic crises and was not correlated with clinical features. Subjects with Mediterranean or A- variants had a more severe clinical phenotype which was not related to enzymatic activity. The Seattle, and probably the Montalbano, variant appears to have a milder clinical expression.

DNA Mutational Analysis↗

Specific IgE to castor bean (Ricinus communis) pollen in the sera of clinically sensitive patients to seeds.

Human sensitization to castor bean seeds in occupational workers and people living close to oil processing factories has been acknowledged for a long time. In view of the cross-reactivity among different plant parts of the same species, we studies crossreactivity between seeds of castor bean and its pollen at the molecular level. Sera from 26 seed-positive atopics, when analyzed for ELISA against seed and pollen extracts of castor bean, showed binding with both seed and pollen extracts, but binding was stronger with seed extracts as compared to pollen. ELISA inhibition revealed partial similarity as pollen extract could not achieve 90% inhibition even at 100 micrograms/ml, and remained the same after protein concentrations of 40 micrograms/ml. Antigenic extracts of seeds and pollen separated into 12 and 20 fractions on SDS-PAGE, respectively. The 26 sera studied for specific IgE binding to different fractions of seed and pollen extracts showed IgE binding in 17 and 16 cases respectively, but with weak binding to pollen fractions. The crossreactivity was confirmed with pooled sera by blot inhibition. Seed antigen completely inhibited the sera for specific IgE at 10 mg/ml protein while pollen antigen showed only partial inhibition. Crossreactivity and presence of common epitopes between seed and pollen extracts are confirmed.

Allergens↗

Do general treatment guidelines for Asian American families have applications to specific ethnic groups? The case of culturally-competent therapy with Korean Americans.

To serve Korean American families effectively, marriage and family therapists need to develop a level of cultural competence. This content analysis of the relevant treatment literature was conducted to discover the most common expert recommendations for family therapy with Asian Americans and to examine their application to Korean Americans. Eleven specific guidelines were generated: Assess support systems, assess immigration history establish professional credibility, provide role induction, facilitate "saving face," accept somatic complaints, be present/problem focused, be directive, respect family structure, be nonconfrontational, and provide positive reframes. Empirical support (clinical and nonclinical research) and conceptual support for each guideline are discussed, and conclusions are reached regarding culturally competent therapy with Korean American families.

Acculturation↗

Effect of heat treatment on the proximate composition, energy values, and levels of some toxicants in African yam bean (Sphenostylis stenocarpa) seed varieties.

The effects of heat treatments on the proximate composition, energy content, and levels of some antinutritional factors in brown and marble-colored African yam bean (AYB) seed flours were investigated. In raw brown and marble-colored AYB seed flours; moisture content, dry matter, crude protein, crude fat, ash, total carbohydrate and caloric value did not differ significantly at the 5% level. Autoclaving and cooking slightly increased the moisture level. Crude protein, crude fat, and ash contents were decreased by autoclaving and were further decreased by cooking. The decrease was not, however, considerable for the AYB that is not eaten raw and whose full nutritional potential as a legume can be derived only when heat treated, as previous reports have indicated for legume seeds. The levels of the toxicants were generally higher in the raw brown AYB compared to the marble-colored, and were generally reduced by both autoclaving and cooking. In the most commonly available and consumed marble-colored AYB, autoclaving at 121 degrees C, 15 psi for 20 min decreased cyanogenic glycosides by 46%, oxalate by 48.9%, tannin by 15.0%, saponin by 14.8% and trypsin inhibitors by 61.3% while cooking for 3.5 hours in tap water decreased these toxic factors by 66.5%, 70.3%, 72.2%, 48.7%, and 86.0%, respectively. The results indicate that for raw samples, varietal difference did not significantly affect nutrient composition though the toxicants were generally higher in the brown AYB than the marble-colored. Autoclaving decreased both nutrient value and the level of toxicants in the two seed types; values were further reduced by cooking. Of the toxicants, trypsin inhibitor was found to be the most heat-labile and of the heat treatment methods, cooking to tenderness is recommendable.

Carbohydrates↗

The respiratory quotient in relation to fat deposition in fattening-growing pigs.

The relationship between non-protein respiratory quotient (RQnp) and total fat retention (RFAT) or fat retained from synthesized carbohydrates (RFAT(CHO)) was evaluated from experiments with fattening--growing pigs in the live weight (LW) range from 45 to 120 kg. A commercial feed compound (31 g fat/kg) was fed at low (LI) or high (HI) feed intake in Expt 1, while a semi-purified diet (9.5 g fat/kg) was given without (LO) or with (HO) supplement of 90 g soya-bean oil/kg in Expt 2. RQnp was calculated from 24 h measurements of the gas exchange, RFAT from 7 d N and C balances and RFAT(CHO) from differences between RFAT and digested fat. The measurements showed that about 85% of the total gas exchange was caused by oxidation of non-protein nutrients and the RQnp varied from 1.00 to 1.34. In Expt 1 RFAT increased with LW from 46 to 141 and from 199 to 335 g/d on LI and HI respectively, whilst in Expt 2 RFAT increased from 191 to 377 and from 267 to 511 g/d on LO and HO respectively. A pronounced linearity was found between RQnp and RFAT for all diets, but the curve for Expt 2 on HO had a lower position than the common curve for the other diets. By relating RQnp to RFAT(CHO) a common linear curve and regression equation could be established in spite of the great variation in dietary composition, intake of fat and fat deposition.

Animals↗

Worldwide epidemic of obesity: hope for Japanese diets.

1. WHO-coordinated Cardiovascular Diseases and Alimentary Comparison Study (CARDIAC) and its follow-up, MONALISA Study covering 60 populations in 25 countries indicated an increasing prevalence of obesity, even in developing countries. 2. The index of obesity, BMI was confirmed to be related positively with both systolic and diastolic blood pressure (BP) in 60 CARDIAC populations and with the age-adjusted mortality rates of coronary heart diseases (CHD) in 25 populations where reliable demographic data were available. 3. CHD mortality rates were inversely related with biomarkers for soy bean and fish intakes, isoflavones and taurine in 24-h urine samples in 25 CARDIAC study populations. 4. Population samples were divided into two groups: soy eaters and non-eaters as well as fish eaters and non-eaters, respectively, based on WHO-CARDIAC study data. Soy eaters as well as fish eaters had significantly lower BMI, BP and serum cholesterol levels, which are three major CHD risk factors. 5. BMI was inversely related with 24-h urinary isoflavones excretion, the biomarker of soy intake and also with 24-h urinary excretion of histidine, relatively rich in fish. 6. Since both nutrients, isoflavones as phytoestrogen and histidine as the precursor of histamine may affect central appetite mechanisms, soy and fish intake may be recommended to control obesity, the major common risk of lifestyle-related diseases.

Animals↗