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1.
Psychiatr Serv ; 73(5): 555-560, 2022 05.
Article in English | MEDLINE | ID: mdl-34704774

ABSTRACT

Integrated inpatient medical and psychiatric care units (IMPUs) are hospital wards that care for inpatients with both acute general medical and psychiatric disorders. IMPU development has stalled, and wide variation in IMPU designs may reflect the fact that IMPUs are still in an early evolutionary stage. High-quality evidence concerning the costs and effectiveness of IMPUs is sparse, because IMPUs do not lend themselves well to traditional evidence-based medicine methods. As a result, most studies of IMPUs have been only observational. Therefore, it is time for a different approach, in which goals for IMPUs are explicitly formulated and IMPU research is incorporated into evidence-based practice (EBP) instead of evidence-based medicine. EBP can be viewed as integrating best available evidence into organizational practices by using four pillars of evidence: organizational, experiential, stakeholder, and scientific. Such types of evidence require an investment in describing the field more precisely. When pragmatic reasoning, where clinical expertise and organizational needs determine IMPU designs, is replaced with EBP, researchers can more effectively perform studies that may convince health care policy makers that IMPUs represent a cost-effective way to improve patients' health and that they increase the well-being of both patients and hospital staff.


Subject(s)
Inpatients , Mental Disorders , Humans , Mental Disorders/therapy , Personnel, Hospital , Psychotherapy
2.
Theriogenology ; 160: 40-49, 2021 Jan 15.
Article in English | MEDLINE | ID: mdl-33171351

ABSTRACT

Oocyte vitrification is considered experimental in the horse with only three live foals reported. The oxidative conditions induced by vitrification could in part explain the poor results and melatonin, a powerful antioxidant, could stimulate ROS metabolization and restore mitochondrial function in these oocytes. Our objective was to determine the oxidative status of vitrified equine oocytes and to analyze the effect of melatonin on mitochondrial-specific ROS (mROS), oocyte maturation, ICSI embryo development and viability. Immature, abattoir-derived oocytes were held for 15 h and vitrified in a final concentration of 20% EG, 20% DMSO and 0.65 M trehalose. In Experiment 1, overall ROS was determined by DCHF-DA; vitrification increased ROS production compared to non-vitrified controls (1.29 ± 0.22 vs 0.74 ± 0.25 a. u.; P = 0.0156). In Experiment 2, mROS was analyzed by MitoSOX™ in vitrified/warmed oocytes matured with (+) or without (-) supplementation of 10-9 M melatonin; mROS decreased in vitrified and non-vitrified oocytes matured in presence of melatonin (P < 0.05). In Experiment 3, we assessed the effect of melatonin supplementation on oocyte maturation, embryo development after ICSI, and viability by pregnancy establishment. Melatonin did not improve oocyte maturation, cleavage or blastocyst rate of non-vitrified oocytes. However, vitrified melatonin (+) oocytes reached similar cleavage (61, 75 and 77%, respectively) and blastocyst rate (15, 29 and 26%, respectively) than non-vitrified, melatonin (+) and (-) oocytes. Vitrified, melatonin (-) oocytes had lower cleavage (46%) and blastocyst rate (9%) compared to non-vitrified groups (P < 0.05), but no significant differences were observed when compared to vitrified melatonin (+). Although the lack of available recipients precluded the transfer of every blastocyst produced in our study, transferred embryos from non-vitrified oocytes resulted in 50 and 83% pregnancy rates while embryos from vitrified oocytes resulted in 17 and 33% pregnancy rates, from melatonin (+) and (-) treatments respectively. Two healthy foals, one colt from melatonin (+) and one filly from melatonin (-) treatment, were born from vitrified/warmed oocytes. Gestation lengths (considering day 0 = day of ICSI) were 338 days for the colt and 329 days for the filly, respectively. Our work showed for the first time that in the horse, as in other species, intracellular reactive oxygen species are increased by the process of vitrification. Melatonin was useful in reducing mitochondrial-related ROS and improving ICSI embryo development, although the lower pregnancy rate in presence of melatonin should be further analyzed in future studies. To our knowledge this is the first report of melatonin supplementation to an in vitro embryo culture system and its use to improve embryo developmental competence of vitrified oocytes following ICSI.


Subject(s)
Melatonin , Animals , Blastocyst , Cryopreservation/veterinary , Embryonic Development , Female , Horses , Male , Melatonin/pharmacology , Mitochondria , Oocytes , Pregnancy , Sperm Injections, Intracytoplasmic/veterinary , Vitrification
3.
Eur J Health Econ ; 20(6): 829-840, 2019 Aug.
Article in English | MEDLINE | ID: mdl-30900047

ABSTRACT

INTRODUCTION: The objectives of this study were to estimate the economic burden of HPV in Italy, accounting for total direct medical costs associated with nine major HPV-related diseases, and to provide a measure of the burden attributable to HPV 6, 11, 16, 18, 31, 33, 45, 52, 58 infections. METHODS: A cost-of-illness incidence-based model was developed to estimate the incidences and costs of invasive cervical cancer, cervical dysplasia, cancer of the vulva, vagina, anus, penis, oropharyngeal, anogenital warts, and recurrent respiratory papillomatosis (RRP) in the context of the Italian National Health System (NHS). We used data from hospital discharge records (HDRs) of an Italian region and conducted a systematic literature review to estimate the lifetime cost per case, the number of incident cases, the prevalence of HPV9 types. Costs of therapeutic options not included in the diagnosis-related group (DRG) tariffs were estimated through a scenario analysis. RESULTS: In 2018, the total annual direct costs were €542.7 million, with a range of €346.7-€782.0 million. These costs could increase considering innovative therapies for cancer treatment (range €16.2-€37.5 million). The fraction attributable to the HPV9 genotypes without innovative cancers treatment was €329.5 million, accounting for 61% of the total annual burden of HPV-related diseases in Italy. Of this amount, €135.9 million (41%) was related to men, accounting for 64% of the costs associated with non-cervical conditions. CONCLUSIONS: The infections by HPV9 strains and the economic burden of non-cervical HPV-related diseases in men were found to be the main drivers of direct costs.


Subject(s)
Cost of Illness , Papillomavirus Infections/economics , Uterine Cervical Diseases/economics , Alphapapillomavirus/genetics , Alphapapillomavirus/isolation & purification , Antineoplastic Agents, Immunological/economics , Antineoplastic Agents, Immunological/therapeutic use , Costs and Cost Analysis , Female , Hospitalization/economics , Humans , Italy/epidemiology , National Health Programs , Papillomavirus Infections/drug therapy , Papillomavirus Infections/epidemiology , Uterine Cervical Diseases/drug therapy , Uterine Cervical Diseases/epidemiology , Uterine Cervical Diseases/virology
5.
Neotrop Entomol ; 47(6): 798-807, 2018 Dec.
Article in English | MEDLINE | ID: mdl-29949124

ABSTRACT

Samples of corbicular and stored pollen gathered by Tetragonisca angustula (Latreille, 1811) in an Amazon-Chiquitano transitional forest during the dry season were analyzed. The pollen spectrum was established as well as the dynamics of the relationship between the stingless bee and the surrounding flora. Pollen samples obtained from three rational hives were subjected to acetolysis and 55 pollen types were identified, the most frequent being from Anadenanthera (Fabaceae), Chenopodiaceae, and Dydimopanax (Araliaceae). Significant differences in pollen families used between hives along the months of collection were found in stored pollen and non-significant differences in corbicular pollen. Mean values of alpha diversity (H') showed T. angustula as a generalist while beta diversity qualitatively showed that pollen composition was similar between two hives both of which differed from the third hive. Pollen types in corbicular and stored pollen were in general related with richness of flowering plants in the foraging area; the pollen offer was less diverse than the pollen collected, and a trend to prefer the collection of pollen from the most abundant flowering species could be discerned. T. angustula showed polylectic feeding habits and a capacity to adapt to food availability.


Subject(s)
Bees , Feeding Behavior , Forests , Pollen/classification , Animals , Bolivia , Seasons
6.
Genet Mol Res ; 15(3)2016 Sep 16.
Article in English | MEDLINE | ID: mdl-27706729

ABSTRACT

Disease-resistant potato cultivars with good tuber appearance and desirable agronomic traits are essential for meeting the demands of producers and the market. Attaining these cultivars is the focus of potato breeding programs whose aim is to benefit the productive chain. The purpose of this study was to estimate combining abilities and evaluate potato clones based on tuber appearance, yield, and resistance to the PVY and PVX viruses. Crosses between four commercial cultivars of potato with good tuber appearance were performed, using eight clones with proven resistance to PVY and PVX from the breeding program of UFLA. The clones obtained were evaluated for agronomic traits, tuber appearance, and the presence of both Ryadg and Rx1 alleles, which confer extreme resistance to the PVY and PVX viruses, respectively. The independent culling level method was used to select genotypes of commercial interest, as well as to estimate the combining abilities of the parents. We identified clones carrying the Ryadg and Rx1 alleles with agronomic traits suitable for the fresh market and for processing. The BRS Ana cultivar and CMA-399 and CMA-385 clones showed positive effects on general combining ability (GCA) for tuber yield, while the Monalisa cultivar showed positive effects on GCA for general tuber appearance.


Subject(s)
Plant Diseases/genetics , Potexvirus/genetics , Potyvirus/genetics , Solanum tuberosum/genetics , Alleles , Breeding , Crosses, Genetic , Disease Resistance/genetics , Genotype , Immunity, Innate/genetics , Phenotype , Plant Diseases/virology , Potexvirus/pathogenicity , Potyvirus/pathogenicity , Solanum tuberosum/virology
7.
Ann Oncol ; 25(7): 1373-1378, 2014 Jul.
Article in English | MEDLINE | ID: mdl-24728035

ABSTRACT

BACKGROUND: Some trial have demonstrated a benefit of adjuvant fluoropirimidine with or without platinum compounds compared with surgery alone. ITACA-S study was designed to evaluate whether a sequential treatment of FOLFIRI [irinotecan plus 5-fluorouracil/folinic acid (5-FU/LV)] followed by docetaxel plus cisplatin improves disease-free survival in comparison with 5-FU/LV in patients with radically resected gastric cancer. PATIENTS AND METHODS: Patients with resectable adenocarcinoma of the stomach or gastroesophageal junction were randomly assigned to either FOLFIRI (irinotecan 180 mg/m(2) day 1, LV 100 mg/m(2) as 2 h infusion and 5-FU 400 mg/m(2) as bolus, days 1 and 2 followed by 600 mg/m(2)/day as 22 h continuous infusion, q14 for four cycles) followed by docetaxel 75 mg/m(2) day 1, cisplatin 75 mg/m(2) day 1, q21 for three cycles (sequential arm) or De Gramont regimen (5-FU/LV arm). RESULTS: From February 2005 to August 2009, 1106 patients were enrolled, and 1100 included in the analysis: 562 in the sequential arm and 538 in the 5-FU/LV arm. With a median follow-up of 57.4 months, 581 patients recurred or died (297 sequential arm and 284 5-FU/LV arm), and 483 died (243 and 240, respectively). No statistically significant difference was detected for both disease-free [hazard ratio (HR) 1.00; 95% confidence interval (CI): 0.85-1.17; P = 0.974] and overall survival (OS) (HR 0.98; 95% CI: 0.82-1.18; P = 0.865). Five-year disease-free and OS rates were 44.6% and 44.6%, 51.0% and 50.6% in the sequential and 5-FU/LV arm, respectively. CONCLUSIONS: A more intensive regimen failed to show any benefit in disease-free and OS versus monotherapy. CLINICAL TRIAL REGISTRATION: ClinicalTrials.gov Identifier: NCT01640782.


Subject(s)
Antineoplastic Combined Chemotherapy Protocols/administration & dosage , Camptothecin/analogs & derivatives , Stomach Neoplasms/drug therapy , Camptothecin/administration & dosage , Chemotherapy, Adjuvant , Cisplatin/administration & dosage , Combined Modality Therapy , Docetaxel , Fluorouracil/administration & dosage , Humans , Leucovorin/administration & dosage , Stomach Neoplasms/surgery , Taxoids/administration & dosage
8.
Br J Cancer ; 104(3): 427-32, 2011 Feb 01.
Article in English | MEDLINE | ID: mdl-21245865

ABSTRACT

BACKGROUND: Preoperative chemoradiotherapy (CRT) improves the survival of patients with oesophageal cancer when compared with surgery alone. METHODS: We conducted a phase II, multicenter trial of FOLFOX-4 and cetuximab in patients with locally advanced oesophageal cancer (LAEC) followed by daily radiotherapy (180 cGy fractions to 5040 cGy) with concurrent weekly cetuximab. Cytokines levels potentially related to cetuximab efficacy were assessed using multiplex-bead assays and enzyme-linked immunosorbent assay at baseline, at week 8 and at week 17. Primary end point was complete pathological response rate (pCR). RESULTS: In all, 41 patients were enroled. Among 30 patients who underwent surgery, a pCR was observed in 8 patients corresponding to a rate of 27%. The most frequent grade 3/4 toxicity was skin (30%) and neutropenia (30%). The 36-month survival rates were 85 and 52% in patients with pathological CR or PR vs 38 and 33% in patients with SD or PD. CONCLUSIONS: Incorporating cetuximab into a preoperative regimen for LAEC is feasible; no correlation between cytokines changes and patient outcome was observed. Positron emission tomography/computed tomography study even if influenced by the small number of patients appears to be able to predict patients outcome both as early and late metabolic response.


Subject(s)
Antibodies, Monoclonal/administration & dosage , Antineoplastic Combined Chemotherapy Protocols/administration & dosage , Esophageal Neoplasms/therapy , Adult , Aged , Antibodies, Monoclonal, Humanized , Biomarkers, Tumor/blood , Cetuximab , Combined Modality Therapy , Cytokines/blood , Esophageal Neoplasms/blood , Esophageal Neoplasms/diagnostic imaging , Esophageal Neoplasms/pathology , Esophagectomy , Female , Fluorouracil/administration & dosage , Humans , Intercellular Signaling Peptides and Proteins/blood , Leucovorin/administration & dosage , Male , Middle Aged , Neoadjuvant Therapy , Organoplatinum Compounds/administration & dosage , Positron-Emission Tomography , Predictive Value of Tests , Radiotherapy, Adjuvant
9.
Anal Bioanal Chem ; 391(2): 599-607, 2008 May.
Article in English | MEDLINE | ID: mdl-18421446

ABSTRACT

In the present work we report the results obtained with a methodology based on direct coupling of a headspace generator to a mass spectrometer for the identification of different types of petroleum crudes in polluted soils. With no prior treatment, the samples are subjected to the headspace generation process and the volatiles generated are introduced directly into the mass spectrometer, thereby obtaining a fingerprint of volatiles in the sample analysed. The mass spectrum corresponding to the mass/charge ratios (m/z) contains the information related to the composition of the headspace and is used as the analytical signal for the characterization of the samples. The signals obtained for the different samples were treated by chemometric techniques to obtain the desired information. The main advantage of the proposed methodology is that no prior chromatographic separation and no sample manipulation are required. The method is rapid, simple and, in view of the results, highly promising for the implementation of a new approach for oil spill identification in soils.


Subject(s)
Gas Chromatography-Mass Spectrometry/methods , Petroleum/analysis , Soil Pollutants/analysis , Cluster Analysis , Hydrocarbons/chemistry , Principal Component Analysis , Soil
10.
Vet Rec ; 157(25): 805-10, 2005 Dec 17.
Article in English | MEDLINE | ID: mdl-16361474

ABSTRACT

Outbreaks of pithomycotoxicosis (facial eczema), a hepatogenous photosensitisation caused by the mycotoxin sporidesmin, have affected ruminants in the Azores Islands of Portugal after warm, humid periods during late summer and autumn. Twenty-two outbreaks were recorded in cattle between 1999 and 2001, affecting 11.4 per cent of the animals in the affected herds, and in 2000 there was an outbreak in one sheep flock in which more than 20 per cent of the sheep died. The clinical signs included decreases in milk production, weight loss, photosensitisation and its sequelae, including death. The animals had high activities of gamma glutamyltransferase in their serum, and icterus and severe liver disease, including biliary hyperplasia and fibrosis, were found postmortem. The characteristic spores of the toxigenic saprophytic fungus Pithomyces chartarum were found on grass; all 381 isolates of the fungus were toxigenic for sporidesmin by elisa, and the results were confirmed by high-performance liquid chromatography analysis. Cattle from farms at greatest risk of pithomycotoxicosis were protected by supplementing their concentrate feed with zinc oxide, or using a slow-release intraruminal zinc bolus.


Subject(s)
Ascomycota/metabolism , Disease Outbreaks/veterinary , Eczema/veterinary , Poaceae/microbiology , Ruminants , Sporidesmins/toxicity , Animals , Cattle , Cattle Diseases/epidemiology , Cattle Diseases/microbiology , Eczema/epidemiology , Face , Portugal/epidemiology , Seasons , Sheep , Sheep Diseases/epidemiology , Sheep Diseases/microbiology , Spores, Fungal/isolation & purification , Sporidesmins/isolation & purification
11.
Braz. j. vet. res. anim. sci ; 40: 190-190, 2003.
Article in Portuguese | LILACS-Express | LILACS, VETINDEX | ID: biblio-1470609

ABSTRACT

O artigo não apresenta resumo

12.
Arch. otolaryngol. head neck surg ; 129(7): 746-749, 2003.
Article in English | Coleciona SUS | ID: biblio-944152

ABSTRACT

Thyroid carcinoma in patients younger than 18 years is rare. It is associated with a greater risk of metastases. However, the prognosis for these patients is better when compared with that of adults.To present the experience of a single institution in the treatment of patients with thyroid carcinoma during childhood and adolescence.Thirty-eight patients, ranging in age from 4 to 18 years, were diagnosed as having thyroid carcinoma. Pathologic types of carcinoma included 29 papillary, 4 follicular, 1 Hürthle cell, and 4 medullary cases. Hypocalcemia was the main complication, being transitory in 9 patients (24%) and permanent in 6 patients (16%). Vocal cord palsy occurred in 2 patients (5%). Two patients (5%) had a surgical site infection. After a mean follow-up of 9.5 years (range, 1-40 years), 28 patients (74%) were alive and had no evidence of disease, 3 (8%) were alive and had recurrent disease, 4 (11%) died (2 of the disease and 2 of non-cancer-related causes), and 3 (8%) were lost to follow-up. The survival rates at 10 years for the patients with papillary, follicular, and medullary carcinoma were 93%, 100%, and 50%, respectively. Thyroid carcinoma in patients younger than 18 years has a good prognosis even in the presence of neck or distant metastasis. Total thyroidectomy, associated with adjuvant radioactive iodine therapy and thyroidal suppression or not, is effective in patients with a well-differentiated thyroid carcinoma.


Subject(s)
Male , Female , Humans , Young Adult , Carcinoma , Survivors , Thyroid Gland
13.
Anal Bioanal Chem ; 374(7-8): 1205-11, 2002 Dec.
Article in English | MEDLINE | ID: mdl-12474086

ABSTRACT

In the present work we propose the use of headspace-mass spectrometry (HS-MS) for the characterisation of monovarietal olive oils, an issue of interest when the origin of an oil has to be determined. The HS-MS procedure involves the direct introduction of the sample into a vial, headspace generation and automatic injection of the volatiles into a mass spectrometer. The results were compared with those obtained using more conventional approaches, including chromatographic, spectrophotometric and other types of analysis. Linear Discriminant Analysis (LDA) was applied to the data obtained with both analytical methodologies to achieve the differentiation of the three types of samples. The proposed method is faster and cheaper than those usually employed for edible oil analysis and no sample preparation is required. Additionally, the measuring process is simple and the results obtained from chemometric treatment are 100% correct as regards classification and prediction, making it an appropriate method for routine control.


Subject(s)
Mass Spectrometry/methods , Plant Oils/chemistry , Plant Oils/classification , Food Industry/methods , Olive Oil , Sensitivity and Specificity
14.
Arzneimittelforschung ; 50(12): 1120-8, 2000 Dec.
Article in English | MEDLINE | ID: mdl-11190779

ABSTRACT

The biological activities of the naphthoquinones lapachol and its cyclization product beta-lapachone, extracted from trees of the genus Tabebuia, have been intensively studied. Given continuity to the studies about heterocyclic derivatives obtained from the reaction of these naphtoquinones with amino-containing reagents, 22 derivatives of beta-lapachone, nor-beta-lapachone and lapachol were synthesised and their activities against trypomastigote forms of T. cruzi were evaluated. The compounds were grouped as oxazolic, imidazolic, phenoxazinic, indolic, pyranic and cyclopentenic derivatives. The variability of the new structures is based on the great electrophilicity of 1,2-quinoidal carbonyls towards reagents containing nitrogen or carbon as nucleophilic centres. In relation to the trypanocidal activity of the synthesised compounds, in view of their structural diversity, tendencies only could be verified. Among the cyclofunctionalised products the oxazolic and imidazolic derivatives showed +/- 1.5 to 34.8 times higher activity than crystal violet, the standard drug for the sterilization of stored blood. These results corroborate the tendency of trypanocidal activity in imidazolic skeletons, and indicate that this moiety could be used as a guide for architectural delineation of molecules with potential value for the chemotherapy of Chagas disease.


Subject(s)
Naphthoquinones/pharmacology , Plants, Medicinal/chemistry , Trypanocidal Agents/pharmacology , Animals , Brazil , Chagas Disease/drug therapy , Chagas Disease/parasitology , Magnetic Resonance Spectroscopy , Naphthoquinones/isolation & purification , Spectrophotometry, Infrared , Spectrophotometry, Ultraviolet , Trypanocidal Agents/isolation & purification , Trypanosoma cruzi/drug effects
15.
Mod Healthc ; 28(1): 27-30, 32-8, 1998 Jan 05.
Article in English | MEDLINE | ID: mdl-10175897

ABSTRACT

From more woes for managed-care firms to continued hospital mergers, particularly among not-for-profits, the staff of Modern Healthcare makes its predictions for the healthcare industry in the new year. And--which should come as no surprise to seasoned executives--1998 should turn out to be memorable, possibly invigorating and most certainly full of change.


Subject(s)
Delivery of Health Care/trends , Health Care Sector/trends , Community Networks , Cost Control , Delivery of Health Care, Integrated , Forecasting , Governing Board , Health Facilities, Proprietary , Health Maintenance Organizations/economics , Hospital Design and Construction , Investments , United States
16.
J Ethnopharmacol ; 56(3): 209-13, 1997 May.
Article in English | MEDLINE | ID: mdl-9201610

ABSTRACT

This study was undertaken to investigate whether a tea prepared from Syzygium cumini, reported to be used by diabetics in Porto Alegre, Brazil, might have an antihyperglycemic effect in experimental models. Teas prepared from leaves and seeds of S. cumini, in concentrations ranging from 2-64 g/l, were administered, as water substitute for 14-95 days, to 16 groups with 8-9 normal albino rats and to four groups with 10-12 rats with streptozotocin-induced diabetes mellitus. Post-prandial blood glucose levels were determined by the glucose oxidase method on blood samples obtained by decapitation. None of the tea concentration had any detectable antihyperglycemic effect either in normal or in diabetic rats, suggesting that this plant, prepared in a manner similar to that employed by humans, is destitute of an antihyperglycemic effect.


Subject(s)
Blood Glucose/metabolism , Diabetes Mellitus, Experimental/blood , Diabetes Mellitus, Experimental/therapy , Plant Extracts/pharmacology , Animals , Beverages , Brazil , Female , Hypoglycemic Agents/isolation & purification , Hypoglycemic Agents/pharmacology , Medicine, Traditional , Plants, Medicinal , Rats
17.
Mod Healthc ; 27(13): 27, 32-9, 1997 Mar 31.
Article in English | MEDLINE | ID: mdl-10165801

ABSTRACT

Managed care might seem to be putting a damper on healthcare construction, but in fact it's one of several industry changes creating opportunities for architectural and design firms. One example of a trend toward making surroundings as pleasant as possible is the west campus expansion at East Texas Medical Center in Tyler (left). Designed and built by Ellerbe Becket and completed in 1995, the project, including a nine-story medical office building, features artwork and rooftop gardens.


Subject(s)
Architecture/classification , Facility Design and Construction/statistics & numerical data , Data Collection , Delivery of Health Care, Integrated , Facility Design and Construction/economics , Facility Design and Construction/trends , Financing, Construction/statistics & numerical data , Hospital Design and Construction/economics , Hospital Design and Construction/statistics & numerical data , Hospital Design and Construction/trends , Managed Care Programs , United States
18.
Arzneimittelforschung ; 47(1): 74-9, 1997 Jan.
Article in English | MEDLINE | ID: mdl-9037448

ABSTRACT

Continuing a program on the chemistry and biological activity of compounds from the Brazilian flora, the lytic activity against bloodstream forms of T. cruzi of nine new heterocyclic naphthooxazole and naphthoimidazole derivatives obtained from the reaction of naphtoquinones isolated from Tabebuia sp. (Tecoma) with amino-containing reagents has been studied. Also for the first time the biological activity of allyl derivatives of lawsone, a natural quinone from Lausonia alba inactive against T. cruzi, is reported. The introduction of an allyl group in lawsone gives rise to O-allyl-lawsone and C-allyl-lawsone that showed activity against the parasite, with ID50 values of 420.7 +/- 71.1 and 330.7 +/- 62.4 mumol/l, respectively. The trypanocidal activity of the naphtho heterocyclics synthesized from the original quinones showed no concordant behavior in relation to the parent compound. Six of nine of the synthesized compounds presented lower ID50 values than crystal violet, indicating a general trend of activity among naphthalenic heterocyclics of the oxazole/imidazole type. However, their chemical structures do not endow them with the capacity of free radical generation by biological reduction as the quinoidal moiety, nor do they have chemical reducible appendage like the nitro group of nifurtimox and benznidazole, responsible for such behaviour. As a hypothesis, the pattern of their biological actions should be focused in other aspects of their chemical structures. Because of their polycyclic planar topology, these derivatives are potential candidates for experimental tests as DNA intercalating agents.


Subject(s)
Heterocyclic Compounds/chemical synthesis , Plants, Medicinal/chemistry , Quinones/chemical synthesis , Trypanocidal Agents/chemical synthesis , Animals , Brazil , Chagas Disease/drug therapy , Chagas Disease/parasitology , Heterocyclic Compounds/pharmacology , Intercalating Agents/pharmacology , Magnetic Resonance Spectroscopy , Mass Spectrometry , Mice , Naphthoquinones/chemical synthesis , Naphthoquinones/pharmacology , Quinones/isolation & purification , Quinones/pharmacology , Spectrophotometry, Infrared , Trypanocidal Agents/pharmacology , Trypanosoma cruzi/drug effects
19.
Mod Healthc ; 27(1): 39-40, 42-4, 46 passim, 1997 Jan 06.
Article in English | MEDLINE | ID: mdl-10163923

ABSTRACT

Our reporters make their prognostications for a dozen major segments of the healthcare industry in 1997. A common thread runs through them: as mergers and consolidations continue to sweet through the industry, communities and regulators are becoming increasingly concerned about whether the public interest is being served. And, our reporters say, scrutiny of such deals is going to get even more intense.


Subject(s)
Consumer Advocacy/trends , Delivery of Health Care, Integrated/legislation & jurisprudence , Health Facility Merger/legislation & jurisprudence , Computer Communication Networks/trends , Facility Regulation and Control , Forecasting , Group Purchasing/trends , Health Facility Merger/trends , Health Maintenance Organizations/trends , Hospitals, Voluntary , Managed Care Programs/trends , Subacute Care/trends , United States
20.
Ann Emerg Med ; 15(6): 738-41, 1986 Jun.
Article in English | MEDLINE | ID: mdl-3706868

ABSTRACT

We report an unusual case of decompression sickness in which a progressive ulnar palsy developed 22 days after the onset of neurological decompression sickness. The initial symptoms of numbness and paresthesias of the hand were treated with recompression therapy, resulting in only partial relief. The patient subsequently developed weakness of the left hand, which increased in severity until the institution of repeated daily hyperbaric oxygen treatments. A total of seven treatments resulted in partial resolution of the patient's signs and symptoms. Recovery was complete within four months.


Subject(s)
Decompression Sickness/complications , Hyperbaric Oxygenation , Paresthesia/etiology , Adult , Decompression Sickness/therapy , Humans , Male , Paresthesia/therapy
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