Distribution of 127 edible plant species for antioxidant activities by two assays

Epidemiological studies have demonstrated the protective effects of fruit and vegetable consumption on human health. A total of 150 edible plants representing 127 species were evaluated for Trolox equivalent antioxidant capacity (TEAC) and superoxide scavenging (SOS) activity. Distributions of vegetables for TEAC and SOS were not continuous but highly skewed. TEAC values on a dry weight basis ranged from 0 to 2105 µmol TE g⁻¹ and SOS values ranged from 0 to 6206 µmol ascorbate equivalent (AE) g⁻¹. The majority of vegetables clustered within 200 µmol TE g⁻¹ and 400 µmol AE g⁻¹. Vegetable species were grouped into six classes after natural logarithm transformation of TEAC and SOS values. Most highly consumed vegetables fell in the very low to medium classes. Species in the very high class for both TEAC and SOS included leaves of Cedrela sinensis (Chinese cedar), Oroxylum indicum (Damocles tree), Cassia siamea (cassod tree) and Cassia tora (sickle senna). Edible plants high in antioxidant activity (AOA) were mostly perennial and underutilised crops, while commonly consumed vegetables were generally low in AOA. There is great potential to increase dietary antioxidants and improve human health through consumption of diverse vegetable species, especially those high in AOA. Copyright © 2006 Society of Chemical Industry     

Red cell folate in elderly patients with myelodysplastic syndrome

Diabetes mellitus is a lifelong condition which requires acceptance, understanding and some degree of lifestyle discipline in order to maintain glycaemic equilibrium. The situation is complicated by the fact that poor glycaemic control is not necessarily symptomatic. Routines recommended by health professionals may not always be acceptable to the recipients or may be difficult to translate into the individual's framework of daily living. Dramatic emergencies may arise from a complex interrelated multiplicity of actions or omissions, or for reasons outside the control of the patient. Most emergencies are technically preventable. An attempt should be made by Accident and Emergency (A & E) staff to determine the cause. Referral to the diabetes specialist team is usually indicated.     

Improving functional outcomes in older patients: lessons from an acute care for elders unit

BACKGROUND: Hospitalization often marks the beginning, and may be partially responsible for, a downward trajectory characterized by declining function, worsening quality of life, placement in a long term care facility, and death. At the University Hospitals of Cleveland, an Acute Care for Elders (ACE) unit that reengineered the process of caring for older patients (> or = 70 years of age) to improve functional outcomes was established in September 1990. DESCRIPTION OF INTERVENTION: The general principles of ACE included an approach to care guided by the biopsychosocial model and recognition of the importance of fitting the hospital environment to the patient's needs. The design of the intervention was consistent with principles of comprehensive geriatric assessment and continuous quality improvement. Care, which focused on maintaining function, was directed by an interdisciplinary team that considered the patient's needs both at home and in the hospital. The major components of the ACE Unit intervention included patient-centered nursing care (daily assessment of functional needs by nursing, nursing-based protocols to improve outcomes, daily rounds by a multidisciplinary team), a prepared environment, planning for discharge, and medical care review. RESULTS: In a randomized trial comparing ACE with usual care, patients receiving ACE had improved functional outcomes at discharge. The costs to the hospital for ACE unit care were less than for usual care. The functional status of ACE and usual care patients was similar 90 days after discharge. FUTURE DIRECTIONS: The ACE unit intervention is being expanded to preserve the improvements observed during the hospitalization in the outpatient setting. In addition, needs other than function which are critical to patients' long-term quality of life are being considered.     

Dopaminergic modulation of early signs of excitotoxicity in visualized rat neostriatal neurons

Cell swelling induced by activation of excitatory amino acid receptors is presumably the first step in a toxic cascade that may ultimately lead to cell death. Previously we showed that bath application of N-methyl-D-aspartate (NMDA) or kainate (KA) produces swelling of neostriatal cells. The present experiments examined modulation of NMDA and KA-induced cell swelling by dopamine (DA) and its receptor agonists. Nomarski optics and infra-red videomicroscopy were utilized to visualize neostriatal medium-sized neurons in thick slices from rat pups (12-18 postnatal days). Increase in somatic cross-sectional area served as the indicator of swelling induced by bath application of glutamate receptor agonists. NMDA induced cell swelling in a dose-dependent manner. Activation of DA receptors in the absence of NMDA did not produce swelling. DA and the D1 receptor agonist SKF 38393, increased the magnitude of swelling produced by NMDA. This effect was reduced in the presence of the D1 receptor antagonist, SCH 23390. In contrast, activation of D2 receptors by quinpirole decreased the magnitude of NMDA-induced cell swelling. DA slightly attenuated cell swelling induced by activation of KA receptors. Quinpirole produced a significant concentration-dependent reduction in KA-induced swelling while SKF38393 increased KA-induced swelling, but only at a low concentration of KA. Together, these results provide additional support for the hypothesis that the direction of DA modulation depends on the glutamate receptor subtype, as well as the DA receptor subtype activated. One possible consequence of these observations is that endogenous DA may be an important contributing factor in the mechanisms of cell death in Huntington's disease.     

A nonparametric bootstrap method for testing close linkage vs. pleiotropy of coincident quantitative trait loci

A novel method using the nonparametric bootstrap is proposed for testing whether a quantitative trait locus (QTL) at one chromosomal position could explain effects on two separate traits. If the single-QTL hypothesis is accepted, pleiotropy could explain the effect on two traits. If it is rejected, then the effects on two traits are due to linked QTLs. The method can be used in conjunction with several QTL mapping methods as long as they provide a straightforward estimate of the number of QTLs detectable from the data set. A selection step was introduced in the bootstrap procedure to reduce the conservativeness of the test of close linkage vs. pleiotropy, so that the erroneous rejection of the null hypothesis of pleiotropy only happens at a frequency equal to the nominal type I error risk specified by the user. The approach was assessed using computer simulations and proved to be relatively unbiased and robust over the range of genetic situations tested. An example of its application on a real data set from a saline stress experiment performed on a recombinant population of wheat (Triticum aestivum L. ) doubled haploid lines is also provided.     

Medical education change: a detailed study of six medical schools

This article reports a comparative case study of six selected USA medical schools, undertaken to identify factors that facilitate or obstruct innovation in medical education. The findings suggest that the culture of each medical school results from a combination of intra-institutional and external factors. Together these forces influence substantially the fate of educational innovations. The institutional culture influences critical elements such as educational philosophy, leadership and resources provided in support of innovation. Equally important, the culture shapes the level and type of change a school considers and implements. The findings also suggest that the availability of resources and the creative impetus present in schools giving priority to research can benefit the educational goals and facilitate educational change.     

Evidence for heterogeneity in facioscapulohumeral muscular dystrophy (FSHD)

Facioscapulohumeral muscular dystrophy (FSHD) is a slowly progressive primary disease of muscle which is usually inherited as an autosomal dominant disorder. FSHD has been localized to the long arm of chromosome 4, specifically to the 4q3.5-qter region. Initially published linkage studies showed no evidence for heterogeneity in FSHD. In the present study we have examined individuals in seven FSHD families. Two-point lod scores show significant evidence for linkage for D4S163 (lod score 3.04 at recombination fraction .21) and D4S139 (lod score 3.84 at recombination fraction .20). D4S171 also gave a positive score (lod score 2.56 at recombination fraction .24). Significant evidence for heterogeneity was found for each of the three markers. Multipoint linkage analysis in this region resulted in a peak multipoint lod score of 6.47. The multipoint analysis supported the two-point studies with odds of 20:1 showing linkage and heterogeneity over linkage and homogeneity. Five of the seven families gave a posterior probability of > 95% of being of the linked type, while two families appeared unlinked to this region of 4q (P < .01%). Individuals in the two unlinked families met the clinical criteria for the diagnosis of FSHD, including facial weakness, clavicular flattening, scapula winging, proximal muscle weakness, and myopathic changes on muscle biopsies without inflammatory or mitochondrial pathology. This study demonstrates genetic heterogeneity in FSHD and has important implications for both genetic counseling and the elucidation of the etiology of FSHD.     

Prospective, randomized trial of hypertonic glucose water and sodium tetradecyl sulfate for gastric variceal bleeding in patients with advanced liver cirrhosis

BACKGROUND AND STUDY AIMS: Information about the appropriate endoscopic treatment of gastric variceal bleeding is sparse. We therefore designed a prospective and randomized study to evaluate and compare efficacy and complication rates of two agents, hypertonic glucose water (50% GW) and sodium tetradecyl sulfate (STS), in treating acute gastric variceal bleeding after esophageal varix eradication. PATIENTS AND METHODS: Of 51 patients with advanced cirrhosis of the liver (Child's C), with acute gastric variceal bleeding initially evaluated, 25 patients were randomized to receive 1.5% STS and 26 to receive 50% glucose water. Treatment was aimed at achieving initial and permanent hemostasis by variceal eradication. RESULTS: Control of acute gastric variceal bleeding was achieved in 80% of the STS group and 92% of the GW group. The rebleeding rate in the STS group was 70%, while in the GW group it was 30% (P < 0.05). Overall, obliteration was achieved in only 32% of the STS group and 81% of the GW group during admission (P < 0.05). There was a trend toward a higher gastric ulcer rate in the STS group compared with the GW group (92% vs. 30%; P < 0.05). The rebleeding control rate and permanent hemostasis rate in the GW group (70%, 54%) were also significantly higher than in the STS group (21%, 12%; P < 0.05; P < 0.05). The hospital mortality for the STS group was 50%, and for the GW group 30%. CONCLUSION: Treatment with hypertonic glucose water in gastric vericeal bleeding was superior to treatment with STS in controlling bleeding and in achieving vericeal obliteration, less rebleeding, and a lower complication rate. The results of this study suggest that hypertonic glucose water is a clinically effective, easily available, and safe sclerosing agent.     

Lignocaine spray applicators are a potential source of cross-infection in the anaesthetic room

A 27 year old female with AIDS and disseminated histoplasmosis is presented. The clinical features include fever, weight loss, productive cough, splenomegaly and moderate pallor. The initial working diagnosis was pulmonary tuberculosis. The diagnosis of disseminated histoplasmosis was made terminally from bone marrow aspirate examination. Disseminated histoplasmosis with its varied clinical picture is likely to be missed in a patient with AIDS, and therefore a high index of suspicion is necessary for diagnosis.     

Choledochal cysts: a nine-year review

It has been suggested that asbestos might have an important role in the development of p53 mutations in mesotheliomas. The objective of this study was to examine asbestos-associated mesotheliomas and non-asbestos-associated mesotheliomas to establish whether the frequency of p53 immunostaining and, by implication, p53 gene mutation is related to asbestos exposure. Immunopositivity for p53 was found in seven (44%) of the 16 mesotheliomas examined. The frequency was approximately the same in both the asbestos-associated mesotheliomas and the non-asbestos-associated mesotheliomas. It is concluded that the frequency of p53 immunostaining in mesotheliomas and, by implication, the frequency of p53 gene mutation is probably not related to asbestos exposure.