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Notes from the Field: Outbreak of Norovirus Illness Caused by Consumption of Oysters Harvested from Galveston Bay, Texas - November-December 2022. MMWR. MORBIDITY AND MORTALITY WEEKLY REPORT 2023; 72:968-969. [PMID: 37651306 DOI: 10.15585/mmwr.mm7235a5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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OA32 Minimally invasive, ultrasound-guided tissue biopsies of synovial tissue in children with Juvenile Idiopathic Arthritis for research: a feasibility study. Rheumatol Adv Pract 2022. [PMCID: PMC9515816 DOI: 10.1093/rap/rkac066.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Introduction/Background When investigating disease mechanisms, site-specific differences in immune cell phenotype and function have highlighted the need to analyse cellular and molecular mechanisms at the tissue site directly. In adults, the ability to obtain synovial tissue biopsies using ultrasound-guided techniques, combined with advanced tissue analytics, has revolutionised our understanding of the cellular ecosystem that operates within the joint and how it contributes to disease. However, a similar approach in paediatric disease is lacking. Description/Method Aims: 1) To describe the protocol for undertaking minimally invasive ultrasound-guided synovial tissue biopsies in children and young people with arthritis, for the purpose of research, alongside routine clinical care. 2) To investigate whether high-quality synovial tissue can be obtained that is suitable for downstream applications including single cell profiling technologies, histology and digital spatial profiling. Treatment-naïve children with a diagnosis of Juvenile Idiopathic Arthritis, who were being referred for a corticosteroid joint injection were recruited from two large UK Paediatric Rheumatology centres. We established a workflow pipeline for performing synovial tissue biopsies in child and young people with arthritis, using standardised procedures for biopsy and sample processing. Procedures were performed by experienced paediatric interventional radiologists with experience of joint biopsy for diagnostic purposes. Following a general anaesthetic, required as part of routine clinical care and the establishment of sterility, synovial fluid was aspirated. Needle-biopsies were undertaken from the same needle insertion site and subsequently corticosteroid was injected into the joint. Thickened synovium was graded via ultrasonography. Participating families completed questionnaires prior to and following synovial biopsy. Discussion/Results 11 participants were recruited to the study over a nine month period, with a median age of 7 years (range 1-16 years); 91% were female. Samples obtained included core synovial biopsies, paired synovial fluid and peripheral blood. Synovial tissue fragments were processed for histology by formalin fixation and cryopreserved for downstream applications, including RNA sequencing and cell culture. Quality control indices included histological analysis to ensure the biopsied material was characteristically synovium and to grade the severity of inflammation. No significant complications were reported; however, one child had a mild haemarthrosis controlled with cold saline wash out and cold compresses. Key learning points/Conclusion Obtaining biopsies of synovial tissue in children with Juvenile Idiopathic Arthritis for the purpose of research, alongside clinical care is feasible. Analysis of tissue direct from the site of inflammation with single-cell RNA sequencing in children is achievable.
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Risk factors for antimicrobial resistance among Staphylococcus isolated from pets living with a patient diagnosed with methicillin-resistant Staphylococcus aureus infection. Zoonoses Public Health 2022; 69:550-559. [PMID: 35420715 PMCID: PMC9543542 DOI: 10.1111/zph.12946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 01/04/2022] [Accepted: 03/23/2022] [Indexed: 01/26/2023]
Abstract
It has been suggested that pets play a critical role in the maintenance of methicillin-resistant (MR) and multidrug-resistant (MDR) Staphylococcus spp. in the household. We examined risk factors for carriage of antimicrobial-resistant coagulase-positive staphylococci, with particular attention to Staphylococcus aureus and Staphylococcus pseudintermedius isolated from pets living in households of people diagnosed with methicillin-resistant S. aureus (MRSA) skin or soft-tissue infection. We analyzed data collected cross-sectionally from a study conducted in 2012 that evaluated the transmission of MRSA and other staphylococci from humans, their pets and the environment (Pets and Environmental Transmission of Staphylococci [PETS] study). We used unadjusted and adjusted stratified logistic regression analyses with household-clustered standard errors to evaluate the association between demographic, healthcare-related, contact-related and environmental risk factors and MDR Staphylococcus spp. isolated from dogs and cats. Staphylococcal isolates obtained from dogs (n = 63) and cats (n = 47) were included in these analyses. The use of oral or injectable antimicrobials by the pets during the prior year was the main risk factor of interest. Based on our results, 50% (12/24) of S. aureus, 3.3% (1/30) of S. pseudintermedius and 25% (14/56) of other coagulase-positive staphylococci (CPS) were determined to be MDR. S. aureus isolates were more likely to be MDR compared with S. pseudintermedius. We did not find a significant statistical association between the use of oral or injectable antimicrobials in the prior year and the presence of MDR bacteria. The results suggest that drivers of antimicrobial resistance in household staphylococci may vary by bacterial species, which could have implications for one health intervention strategies for staphylococci and inform the investigation of other reverse zoonoses, such as COVID-19.
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P174 PREVENTING FOOD ALLERGY BY EDUCATING FIRST-YEAR PEDIATRIC RESIDENT PHYSICIANS. Ann Allergy Asthma Immunol 2021. [DOI: 10.1016/j.anai.2021.08.152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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M231 PRESENCE OF LOW-LEVEL LENTIL SPECIFIC IGE MAY NOT PREDICT LENTIL ALLERGY RESOLUTION. Ann Allergy Asthma Immunol 2021. [DOI: 10.1016/j.anai.2021.08.360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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M144 TNFAIP3 DEFICIENCY AS AN UNCOMMON CAUSE OF HYPOGAMMAGLOBULINEMIA. Ann Allergy Asthma Immunol 2021. [DOI: 10.1016/j.anai.2021.08.285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Anti-Ku-positive juvenile dermatomyositis. Clin Exp Dermatol 2021; 47:425-427. [PMID: 34528293 DOI: 10.1111/ced.14937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/01/2021] [Indexed: 11/28/2022]
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A national audit of oral propranolol for the treatment of infantile haemangiomas. Br J Dermatol 2021; 186:189-191. [PMID: 34473344 DOI: 10.1111/bjd.20738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Revised: 08/23/2021] [Accepted: 08/28/2021] [Indexed: 12/01/2022]
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9
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Navigating social media: the BJD experience. Br J Dermatol 2021; 184:585-586. [PMID: 33835486 DOI: 10.1111/bjd.19754] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Revised: 11/30/2020] [Accepted: 12/01/2020] [Indexed: 11/29/2022]
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Relapsing-remitting linear ecchymosis. Clin Exp Dermatol 2021; 46:931-932. [PMID: 33511668 DOI: 10.1111/ced.14582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Accepted: 01/26/2021] [Indexed: 11/29/2022]
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Regulatory noncoding RNAs help protect keratinocytes from ultraviolet-mediated damage in vitiligo. Br J Dermatol 2021; 184:999-1000. [PMID: 33660271 DOI: 10.1111/bjd.19827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 12/16/2020] [Indexed: 11/28/2022]
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Cutaneous sequelae of a national health crisis: Obesity and the skin. SKIN HEALTH AND DISEASE 2021; 1:e7. [PMID: 35664818 PMCID: PMC9060079 DOI: 10.1002/ski2.7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 10/08/2020] [Accepted: 10/09/2020] [Indexed: 02/02/2023]
Abstract
Background The global obesity pandemic has far‐reaching health consequences and has become a major global health challenge. The worldwide prevalence of obesity nearly doubled between 1980 and 2008 and based on the latest estimates in the European Union, obesity affects up to 30% of adults. As a consequence of this rising prevalence of obesity, there has been an increase in the frequency of certain disease of the skin. Objectives We review the cutaneous sequelae of obesity, firstly describing the physiological consequences of increased adiposity in the skin and secondly examining the dermatoses associated with obesity.
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Extensive tissue injury in the setting of sepsis. Clin Exp Dermatol 2021; 46:785-788. [PMID: 33484176 DOI: 10.1111/ced.14514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Revised: 09/28/2020] [Accepted: 11/17/2020] [Indexed: 12/01/2022]
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Macrodystrophia lipomatosa of the left hallux. Clin Exp Dermatol 2021; 46:974-976. [PMID: 33480448 DOI: 10.1111/ced.14540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 11/24/2020] [Accepted: 12/15/2020] [Indexed: 11/28/2022]
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'Ruxolitinib cream for the treatment of vitiligo: a randomised, controlled, phase 2 trial': a critical appraisal. Br J Dermatol 2020; 184:826-827. [PMID: 33179290 DOI: 10.1111/bjd.19674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 11/09/2020] [Accepted: 11/10/2020] [Indexed: 11/27/2022]
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M251 HETEROZYGOUS FOXN1 DEFICIENCY: A RARE CAUSE OF T CELL LYMPHOPENIA AND ABNORMAL TREC SCREENING. Ann Allergy Asthma Immunol 2019. [DOI: 10.1016/j.anai.2019.08.223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Vanishing bile duct syndrome with eruptive xanthomas. Clin Exp Dermatol 2019; 45:364-366. [PMID: 31385321 DOI: 10.1111/ced.14043] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/14/2019] [Indexed: 11/27/2022]
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Randomized, controlled, double-blinded field trial to assess Leishmania vaccine effectiveness as immunotherapy for canine leishmaniosis. Vaccine 2018; 36:6433-6441. [PMID: 30219369 DOI: 10.1016/j.vaccine.2018.08.087] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 08/03/2018] [Accepted: 08/04/2018] [Indexed: 10/28/2022]
Abstract
Better tools are necessary to eliminate visceral leishmaniasis (VL). Modeling studies for regional Leishmania elimination indicate that an effective vaccine is a critical tool. Dogs are the reservoir host of L. infantum in Brazil and the Mediterranean basin, and therefore are an important target for public health interventions as well as a relevant disease model for human VL. No vaccine has been efficacious as an immunotherapy to prevent progression of already diagnostically positive individuals to symptomatic leishmaniasis. We performed a double-blinded, block-randomized, placebo-controlled, vaccine immunotherapy trial testing the efficacy of a recombinant Leishmania A2 protein, saponin-adjuvanted, vaccine, LeishTec®, in owned hunting dogs infected with L. infantum. The primary outcome was reduction of clinical progression, with reduction of mortality as a secondary outcome. Vaccination as an immunotherapy reduced the risk of progression to clinically overt leishmaniasis by 25% in asymptomatic dogs (RR: 1.33 95% C.I. 1.009-1.786 p-value: 0.0450). Receiving vaccine vs. placebo reduced all-cause mortality in younger asymptomatic dogs by 70% (RR: 3.19 95% C.I.: 1.185-8.502 p-value = 0.0245). Vaccination of infected-healthy animals with an anti-Leishmania vaccine significantly reduced clinical progression and decreased all-cause mortality. Use of vaccination in infected-healthy dogs can be a tool for Leishmania control.
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Safety Analysis of Leishmania Vaccine Used in a Randomized Canine Vaccine/Immunotherapy Trial. Am J Trop Med Hyg 2018; 98:1332-1338. [PMID: 29512486 DOI: 10.4269/ajtmh.17-0888] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
In Leishmania infantum-endemic countries, controlling infection within dogs, the domestic reservoir, is critical to public health. There is a need for safe vaccines that prevent canine progression with disease and transmission to others. Protective vaccination against Leishmania requires mounting a strong, inflammatory, Type 1 response. Three commercially available canine vaccines on the global veterinary market use saponin or inflammatory antigen components (Letifend) as a strong pro-inflammatory adjuvant. There is very little information detailing safety of saponin as an adjuvant in field trials. Safety analyses for the use of vaccine as an immunotherapeutic in asymptomatically infected animals are completely lacking. Leishmania infantum, the causative agent of canine leishmaniasis, is enzootic within U.S. hunting hounds. We assessed the safety of LeishTec® after use in dogs from two different clinical states: 1) without clinical signs and tested negative on polymerase chain reaction and serology or 2) without clinical signs and positive for at least one Leishmania diagnostic test. Vaccine safety was assessed after all three vaccinations to quantify the number and severity of adverse events. Vaccinated animals had an adverse event rate of 3.09%, whereas placebo animals had 0.68%. Receiving vaccine was correlated with the occurrence of mild, site-specific, reactions. Occurrence of severe adverse events was not associated with having received vaccine. Infected, asymptomatic animals did not have a higher rate of adverse events. Use of vaccination is, therefore, likely to be safe in infected, asymptomatic animals.
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SU-F-T-227: A Comprehensive Patient Specific, Structure Specific, Pre-Treatment 3D QA Protocol for IMRT, SBRT and VMAT - Clinical Experience. Med Phys 2016. [DOI: 10.1118/1.4956366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Young children with cerebral palsy: families self-reported equipment needs and out-of-pocket expenditure. Child Care Health Dev 2014; 40:654-62. [PMID: 23952344 DOI: 10.1111/cch.12098] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/14/2013] [Indexed: 11/29/2022]
Abstract
BACKGROUND Costs to families raising a child with cerebral palsy and complex needs are direct and indirect. This study investigated the self-reported real-life costs, equipment needs, and associated characteristics of children who had the highest equipment and care needs. METHOD The purposive sample (n = 29) were families with a child with cerebral palsy: gross motor function levels 5 (n = 20), level 4 (n = 5), level 3 (n = 4); complex communication needs (n = 21); medical needs (n = 14); hearing impairment (n = 5) and visual impairment (n = 9). Participants completed a specifically designed survey that included the Assistance to Participate Scale. Equipment and technology purchases were recorded in the areas of positioning, mobility, transport, home modifications, communication, splinting and orthoses, self-care, technology, communication devices, medical, adapted toys/leisure items and privately hired babysitters/carers. Descriptive and inferential statistics were used to analyse the data. RESULTS Families had purchased up to 25 items within the areas described. The highest median number of items were recorded for positioning (15 items), mobility devices (9 items) and adapted toys/leisure items (9 items). Median costs were highest for home modifications (AUD$23000), transport (AUD$15000), splints and orthoses (AUD$3145), paid carers (AUD$3080), equipment for toileting/dressing/bathing (AUD$2900) and technical/medical items ($2380). Children who needed more parental assistance to participate in play and recreation also required significantly more equipment overall for positioning, communication, self-care and toys/leisure. CONCLUSIONS The equipment needs of young children with complex disability are extensive and out-of-pocket expenses and parental time to support participation in play/recreation excessive. Substantial financial support to offset costs are crucial to better support families in this life situation.
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SU-E-T-152: Error Sensitivity and Superiority of a Protocol for 3D IMRT Quality Assurance. Med Phys 2014. [DOI: 10.1118/1.4888482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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EMERALD, elderly medicine early review and liaison for discharge. Eur Geriatr Med 2013. [DOI: 10.1016/j.eurger.2013.07.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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SU-E-T-433: Evaluation of the ArcCheck Device for Patient-Specific Quality Assurance in Step-And-Shoot IMRT for Single-Fraction Spinal SBRT. Med Phys 2013. [DOI: 10.1118/1.4814867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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The use of zolpidem in the treatment of progressive supranuclear palsy. J Clin Neurosci 2010; 17:385-6. [PMID: 20071178 DOI: 10.1016/j.jocn.2009.05.038] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2008] [Revised: 05/07/2009] [Accepted: 05/22/2009] [Indexed: 11/19/2022]
Abstract
Progressive supranuclear palsy (PSP) is a debilitating progressive neurodegenerative disorder for which there is no proven pharmacological treatment. Zolpidem immediate release formulation has been reported to show short-term improvements in motor function and voluntary saccadic eye movements, but the benefits were not sustained. A 61-year-old man with a 4-year history of PSP was observed over 6 months to have sustained improvement in motor function, pseudobulbar symptoms and ocular motility 2 months after commencing zolpidem controlled release (CR) formulation. He was admitted to hospital and a detailed neurological and functional assessment recorded on video after withdrawal of zolpidem CR, and again following re-introduction of the medication. Within 1 hour of administration of 25mg zolpidem CR the patient had a dramatic improvement in fine motor skills, dexterity, speed and fluidity of movement, facial and vocal expression, oropharyngeal coordination and function and pursuit, and voluntary saccadic eye movements. These improvements were observed for 4 hours to 5 hours post-dose and were reproducible on subsequent withdrawal and re-challenging. We found that zolpidem CR, a gamma aminobutryic acid (GABA)ergic agonist of the benzodiazepine type 1 receptor, caused sustained improvement in motor and ocular symptoms in a patient with PSP over 6 months. Further studies are needed to determine the potential roles of GABA neurotransmission in PSP.
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Etanercept discontinuation in a cohort of juvenile idiopathic arthritis patients: etanercept inefficacy but not intolerance is associated with oral corticosteroid use. Pediatr Rheumatol Online J 2008. [PMCID: PMC3334152 DOI: 10.1186/1546-0096-6-s1-p88] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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The outcome of Direct Current Cardioversion (DCC) for the treatment of Atrial Fibrillation (AF) in a district general hospital in Ireland. Ir J Med Sci 2006; 175:41-5. [PMID: 16872028 DOI: 10.1007/bf03167948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND Direct current cardioversion (DCC) is a method to control persistent AF, to facilitate a reduction in stroke risk. Although this is a frequently performed procedure, there are no available published data regarding its outcome in an Irish setting. AIMS To determine the short- and long-term outcome of DCC, factors predicting a successful outcome, and its safety. METHODS Data relating to each DCC were collected retrospectively from patient notes over a 6.3 year-period, and subsequently entered into a Microsoft Access database before subsequent statistical analysis. RESULTS Forty-five consecutive unselected patients were identified, in which 59 DCCs were performed. Sinus rhythm (SR) was achieved immediately after DCC in 54/59 (91%) patients. There was a significant positive correlation between patient body weight and the energy level required to achieve SR (p=0.0001). No thromboembolic complications were noted. After a mean follow-up time of 12 +/- 13.7months, 30/45 (67%) had maintained SR. After univariate analysis, a number of important factors predictive of maintenance of SR at follow-up were identified. CONCLUSION DCC was found to be an effective method for short- and long-term control of AF, without thromboembolic complications, and patients with a favourable long-term outcome after DCC could conceivably be predicted on the basis of a methodical history, careful examination, simple investigations and pharmacological variables.
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Alternative work scheduling for professional social workers. ADMINISTRATION IN SOCIAL WORK 1987; 12:93-102. [PMID: 10312955 DOI: 10.1300/j147v12n04_07] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The authors present some practical evidence that the changing nature of today's work force requires innovative alternatives to traditional scheduling based on the 9 to 5, five-day workweek. They support alternative work scheduling (AWS) as an updated and promising approach. Described is their experience with a two-year AWS pilot project in the Social Work Service of an urban medical center, with their focus upon the processes of negotiating, programming, and implementing the concepts of "flex-time," "compressed workweek," and "job sharing." Informal assessment indicates strongly positive responses from the participating social workers, other members of the health care team, and the consumers of the services.
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Abstract
Recent research on the ecology, physiology and genetics of metal resistance and accumulation in bacteria has significantly increased the basic understanding of microbiology in these areas. Research has clearly demonstrated the versatility of bacteria to cope with toxic metal ions. For example, certain strains of bacteria can efficiently efflux toxic ions such as cadmium, that normally exert an inhibitory effect on bacteria. Some bacteria such as Escherichia coli and Staphylococcus sp. can volatilize mercury via enzymatic transformations. It is also noteworthy that many of these resistance mechanisms are encoded on plasmids or transposons. By expanding the knowledge on metal-resistance and accumulation mechanisms in bacteria, it may be possible to utilize certain strains to recover precious metals such as gold and silver, or alternatively remove toxic metal ions from environments or products where their presence is undesirable.
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Radiologic characteristics of primitive neuroectodermal tumors in children. AJNR Am J Neuroradiol 1985; 6:15-8. [PMID: 2982251 PMCID: PMC8334564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Radiographic findings are reviewed in 31 children with primitive neural ectodermal tumors seen at the Hospital for Sick Children from 1962 through 1983. Seventeen children were initially evaluated with computed tomography (CT). Ten of these had both CT studies and angiography. The tumors were large, irregular, typically iso- to hyperdense, and showed dense, heterogeneous contrast enhancement. Cysts were present in 65% and calcifications in 71% of cases. The angiographic findings were nonspecific, ranging from avascular to markedly vascular. Although these tumors were usually found in the cerebral hemisphere, particularly the frontal lobes, two cases are included of tumors arising elsewhere: one in the pineal and one in the suprasellar region. Epidemiologic data are reviewed.
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