ABSTRACT
This paper reports the case of a sixty-year-old man who presented with backache and radiculopathy secondary to the development of a lumbar spinal synovial cyst following an episode of trauma. There was resection of the cyst with partial facetectomy. Current literature reports are outlined.
Subject(s)
Lumbar Vertebrae/pathology , Synovial Cyst/diagnosis , Humans , Magnetic Resonance Imaging , Male , Middle AgedABSTRACT
This paper reports the case of a sixty-year-old man who presented with backache and radiculopathy secondary to the development of a lumbar spinal synovial cyst following an episode of trauma. There was resection of the cyst with partial facetectomy. Current literature reports are outlined.
Subject(s)
Humans , Male , Middle Aged , Synovial Cyst , Lumbar Vertebrae/pathology , Magnetic Resonance ImagingABSTRACT
OBJECTIVE: To establish a baseline of organophosphate susceptibility/resistance in Trinidad and Tobago strains of 4th instar Aedes aegypti. DESIGN AND METHODS: Twenty-one strains of Aedes aegypti (Linneaus) were collected throughout Trinidad and Tobago and 4th instar larvae were bioassayed for sensitivity to five organophosphate insecticides, temephos, malathion, fenthion, fenitrothion and bromophos. The data were computer probit analyzed, resistance ratios [RR] were calculated and statistical analysis was done to determine any incidence of cross-resistance. RESULTS: Low to moderate levels of larval resistance to tenephos [RR 0.8-6.3], malathion [RR 0.8-3.8], fenthion [RR 0.7-6.7], fenitrothion [RR 0.7-3.] and bromophos [RR 0.9-6.4] were observed. Significant levels of cross-resistance were found between pairs of insecticides as follows: temephos/fenthion [rsq = 0.6219]; temephos/fenitrothion [rsq = 0.6117]; fenthion/malathion [rsq = 0.5751]; fenthion/bromophos. [rsq = 0.7255] and fenthion/fenitrothion [rsq = 0.6111]. CONCLUSIONS: The generally low levels of organophosphate insecticide resistance shown in this study indicate that these chemicals can continue to be used in the fight against Ae aegypti and dengue, while we continue to monitor trends in changing resistance patterns.(AU)
Subject(s)
Insecticides, Organophosphate/analysis , Larva/parasitology , Aedes/parasitology , Dengue/prevention & control , Data Collection , Trinidad and Tobago , Malathion/agonists , Malathion/analysis , Fenthion/analysis , Fenitrothion/analysis , Insecticide ResistanceABSTRACT
The functions of many open reading frames (ORFs) identified in genome-sequencing projects are unknown. New, whole-genome approaches are required to systematically determine their function. A total of 6925 Saccharomyces cerevisiae strains were constructed, by a high-throughput strategy, each with a precise deletion of one of 2026 ORFs (more than one-third of the ORFs in the genome). Of the deleted ORFs, 17 percent were essential for viability in rich medium. The phenotypes of more than 500 deletion strains were assayed in parallel. Of the deletion strains, 40 percent showed quantitative growth defects in either rich or minimal medium.
Subject(s)
Gene Deletion , Genes, Essential , Genome, Fungal , Open Reading Frames , Saccharomyces cerevisiae/genetics , Culture Media , Gene Expression Regulation, Fungal , Gene Targeting , Genes, Fungal , Phenotype , Polymerase Chain Reaction , Recombination, Genetic , Saccharomyces cerevisiae/growth & developmentABSTRACT
In 1995 and 1996, 7.5 percent of 321 serum samples (IgM) and 48.0 percent of 352 serujm samples (IgG) assayed for antibiotics at CAREC, were positive for exposure to Toxoplasma. IgM antibodies were not detected in the first 6 months of life, but thereafter levels rose to peak (27.3 percent) in the >6 month - 10 year age group. IgG rose from 16.7 percent in the youngest to 62 percent in the adult age group. Symptoms most commonly associated with positive IgMs were lymphadenopathy (20.8 percent) > eye disease (11.8 percent) > congenital events (7.7 percent). IgG antibodies were associated with eye diseases (53.5 percent) > congenital manifestation (50.0 percent) > missed abortions(41.0 percent) >lymphadenopathy (36.0 percent) > perinatal events (27.8 percent) > central nervous systems symptoms (21.1 percent). IgM determinants were more commonly obtained in sera from Suriname (7.7 percent) > Barbados (7.4 percent) > St. Lucia (4.2 percent). For IgGs the order was Grenada (66.7 percent) > St Lucia (61.1 percent) > St. Vincent (50.0 percent) > Barbados (47.8 percent) >Suriname (46.2 percent). (AU)
Subject(s)
Humans , Female , Male , Adult , Infant , Toxoplasmosis/blood , Toxoplasmosis/epidemiology , Immunoglobulin M/blood , Caribbean Region/epidemiologyABSTRACT
A study was undertaken to identify the common micro-organisms occuring in induced sputum specimens from HIV-infected/non-infected individuals with pulmonary manifestations in Trinidad. Only 13 percent of HIV seropositive patients with pneumonia were found to be positive for P. carinii. This low yield may have been due to low prevalence of the P. carinii in Trinidad or to prior antibiotic therapy. Active mycobacterial infection was demonstrated in only 13 percent HIV seropositive patients with pneumonia, though 43 percent HIV patients had a clinical diagnosis of tuberculosis. This may have been due to the low sensitivity of the acid-fast technique. The most common microbial pathogen is identified in HIV patients with pneumonia was Candida sp. Followed by gram negative bacteria. A listing is made of the various organisms occuring singly or mixed in HIV seropositive and HIV seronegative patients (AU)
