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Biomedical subjects

C Savage

Publications and source records attributed to C Savage.

At least 19 recordsLinked to original sources

Characterization of an unusual Mycobacterium: a possible missing link between Mycobacterium marinum and Mycobacterium ulcerans.

In an attempt to characterize an unusual mycobacterial isolate from a 44-year-old patient living in France, we applied phenotypic characterizations and various previously described molecular methods for the taxonomic classification of mycobacteria. The results of the investigations were compared to those obtained in a previous study with a set of temporally and geographically diverse Mycobacterium ulcerans (n = 29) and Mycobacterium marinum (n = 29) isolates (K. Chemlal, G. Huys, P.-A. Fonteyne, V. Vincent, A. G. Lopez, L. Rigouts, J. Swings, W. M. Meyers, and F. Portaels, J. Clin. Microbiol. 39:3272-3278, 2001). The isolate, designated ITM 00-1026 (IPP 2000-372), is closely related to M. marinum according to its phenotypic properties, lipid pattern, and partial 16S rRNA sequence. Moreover, fingerprinting by amplified fragment length polymorphism (AFLP) analysis unequivocally classified this strain as a member of the species M. marinum, although it lacked two species-specific AFLP marker bands. However, PCR and restriction fragment length polymorphism analysis based on M. ulcerans-specific insertion sequence IS2404 showed the presence of this element in a low copy number in isolate ITM 00-1026. In conclusion, the designation of this isolate as a transitional species further supports the recent claim by Stinear et al. (T. Stinear, G. Jenkin, P. D. Johnson, and J. K. Davies, J. Bacteriol. 182:6322-6330, 2000) that M. ulcerans represents a relatively recent phylogenetic derivative of M. marinum resulting from the systematic acquisition of foreign DNA fragments.

Adult↗

Cat-scratch disease neuroretinitis diagnosed by a polymerase chain reaction approach.

PURPOSE: To assess the value of polymerase chain reaction in the diagnosis of cat-scratch disease neuroretinitis without conclusive serology. METHODS: Interventional case report. A 13-year-old girl developed a right neuroretinitis 2 months after a cat scratch. Despite the lack of accompanying features, an infection by Bartonella henselae was suspected and a systemic check-up was performed. RESULTS: Serologic results excluded other proposed origins but were insufficient in making the diagnosis because of low B. henselae specific IgG level in serum. A polymerase chain reaction analysis for B. henselae DNA in a small axillary lymphadenopathy aspirate enabled us to achieve a definitive diagnosis of cat-scratch disease. CONCLUSION: Polymerase chain reaction is a valuable method of diagnosing cat-scratch disease when serology is considered negative or borderline.

Adolescent↗

Hemoptysis secondary to pulmonary pseudoaneurysm 30 years after a gunshot wound.

A 49-year-old man presented with intermittent hemoptysis from a traumatic pulmonary artery pseudoaneurysm 30 years following a thoracic gunshot wound. The patient was asymptomatic for 28.5 years, when he began experiencing recurrent hemoptysis, chest pain, and a cough. A left lower lobe mass on chest x-ray film was investigated with contrast-enhanced computed tomography and pulmonary angiogram confirming a 1.5-cm pseudoaneurysm. Intraluminal coil embolization was attempted, but a left lower lobectomy was ultimately necessary to treat persistent hemoptysis.

Aneurysm, False↗

Giant left atrial intrapericardial aneurysm: noninvasive preoperative imaging.

Congenital giant intrapericardial aneurysms of the left atrium are rare. A 17-year-old boy presented with paroxysmal episodes of palpitations, chest pain, and dyspnea. A chest roentgenogram showed an enlarged left cardiac silhouette. Transthoracic echocardiography imaging showed an intrapericardial aneurysm of the left atrium. Cardiac magnetic resonance imaging confirmed the diagnosis and delineated adjacent structures to plan the surgical resection. We have found no previous reports of cases of diagnosis and preoperative assessment based solely on noninvasive imaging.

Adolescent↗

Housing satisfaction and service use by mentally ill persons in community integrated living arrangements.

OBJECTIVE: In response to provisions of the Omnibus Budget Reconciliation Act of 1987 that sought to reduce the number of mentally ill persons in nursing homes, the Illinois Department of Human Services in 1989 developed small-scale residential treatment programs known as community integrated living arrangements. This study examined satisfaction with residential services and days of hospitalization among residents of these facilities. METHODS: Seventy-four residents from nine randomly selected community integrated living arrangement facilities were surveyed with the Quality of Life Interview to determine their satisfaction with their residence. Data on hospitalization before and after program placement were obtained from residents' charts and from an Illinois Department of Human Services database on utilization of state-operated facilities. RESULTS: Residents of community integrated living arrangement facilities had a mean rating of satisfaction with their residence of 5.2, "mostly satisfied," on a scale from 1 to 7. Residents with continuous supervision and those with intermittent supervision were equally pleased with their living arrangements. Residents' hospital use decreased from a mean of 47.7 days during the year before program placement to 5.3 days during their first year in the program. CONCLUSIONS: The level of satisfaction with the community integrated living arrangement residences was fairly high and was comparable to levels reported in related research on independent living arrangements. The decrease in residents' hospital use in the year after program placement suggests that the community integrated living arrangements help maintain severely mentally ill individuals in the community.

Chicago↗

Primary systemic vasculitis.

Systemic vasculitides are multisystem diseases characterised pathologically by necrotising inflammation of blood vessels. The clinical presentation of vasculitis depends on the vessels involved. Classification of such diseases is now by the size of the affected vessel. This review focuses predominantly on the small vessel vasculitides shown to be associated with the presence of anti-neutrophil cytoplasmic antibodies (ANCA), that is Wegener's granulomatosis, microscopic polyangiitis and Churg-Strauss syndrome. It will examine the clinical characteristics of these diseases, the use of ANCA in diagnosis and monitoring of disease along with current and novel treatment strategies. The immunopathology of the ANCA-associated vasculitides will also be explored reviewing the roles of ANCA, neutrophils, T cells and apoptosis in the production of disease.

Adult↗

Bronchoscopic diagnosis and staging of lung cancer.

In the past 2 decades, flexible bronchoscopy (FB) with forceps biopsy and transbronchial needle aspiration (TBNA); computed tomography (CT)-guided, transthoracic fine-needle aspiration (FNA); and endoscopic ultrasonography (EUS) have revolutionized lung cancer diagnosis and staging by facilitating precise biopsy of lung lesions and virtually all mediastinal lymph-node stations. In this article the authors present an algorithm for the diagnosis and staging of lung cancer that addresses sampling of suspicious lesions and lymph nodes by means of FB, CT, ultrasonography, fluoroscopy, and EUS, emphasizing tissue-based diagnosis and staging by means of image-guided technology with the highest diagnostic yield. They discuss the approach to the diagnosis and staging of lung cancer by techniques guided by FB, with particular attention to the increasing role of TBNA in this field. Additionally, the authors propose a rating scale based on the degree of invasiveness and diagnostic yield, comparing FB with other diagnostic techniques.

Biopsy, Needle↗

[Atypical presentation of tuberculosis in the elderly: a case report of pleuropericarditis].

INTRODUCTION: The incidence of tuberculosis is increasing, particularly in the elderly, and has various clinical presentations. EXEGESIS: We describe the case of a 78-year-old woman who presented tuberculous pleuropericarditis. This case is atypical, due to infection localisation, negativity of the tuberculin skin test, and mixed pleural effusion. Following antituberculosis antibiotic therapy and corticotherapy, the outcome was favorable. CONCLUSION: Due to atypical and non-specific clinical presentation, diagnosis of tuberculosis may be particularly difficult in the elderly.

Aged↗

[Paraplegia episodes revealing tuberculous myelitis].

A 38 year-old woman, without previous medical history, presented, since 1993, several paraplegic fits carrying herself progressively through to a severe paraplegia. Diagnoses successively proposed were spinal cord compressions by slipped discs, spinal cord infarct and multiple sclerosis. In November 1998, the patient presented back pain and fever. Spinal cord magnetic resonance imaging (MRI) revealed a mildly enlarged dorsal cord with signal abnormalities. The lesions were isointense on T1-weighted images, hyperintense on T2-weighted images and showed a ringlike contrast enhancement. A lumbar puncture showed a trouble cerebrospinal fluid (CSF) with leucocytes 600/mm(3) (85 p.100 polynuclear), protein 6.7 g/l, glucose 0.26 g/l, chloride 109 mmol/l. The patient was first treated with parenteral unspecific antibiotherapy. Microbiological studies of blood and CSF were negative. CSF examination with polymerase chain reaction (PCR) was positive for Mycobacterium tuberculosis. Clinical (pain and fever) symptoms and CSF abnormalities decreased after antituberculous treatment. However, paraparesis remain severe. Spinal tuberculous localizations often lead to diagnostic and therapeutic errors. Improvement of spinal cord MRI sequences and using of PCR technics in CSF would contribute to reduce these difficulties.

Adult↗

Cyanide Chemistry in Comet Hale-Bopp (C/1995 O1).

Observations of comet Hale-Bopp (C/1995 O1) have been carried out near perihelion (1997 March) at millimeter wavelengths using the NRAO 12 m telescope. The J=1-->0, 2-->1, and 3-->2 lines of HCN at 88, 177, and 265 GHz were measured in the comet as well as the J=3-->2 lines of H13CN, HC15N, and HNC. The N=2-->1 transition of CN near 226 GHz was also detected, and an upper limit was obtained for the J=2-->1 line of HCNH+. From the measurements, column densities and production rates have been estimated. A column density ratio of [HCN]/[HNC] = 7+/-1 was observed near perihelion, while it was found that [HCN]/[HCNH+] greater, similar 1. The production rates at perihelion for HCN and CN were estimated to be Q(HCN) approximately 1x1028 s-1 and Q(CN) approximately 2.6x1027 s-1, respectively, resulting in a ratio of [HCN]/[CN] approximately 3. Consequently, HCN is sufficiently abundant to be the parent molecule of CN in Hale-Bopp, and HCNH+ could be a source of HNC. Finally, carbon and nitrogen isotope ratios of 12C/13C = 109+/-22 and 14N/15N = 330+/-98 were obtained from HCN measurements, in agreement with previous values obtained from J=4-->3 data. Such ratios suggest that comet Hale-Bopp formed coevally with the solar system.

Journal Article↗

[Diagnostic difficulties of transfusion incidents due to bacterial contamination: report of two cases].

The French hemovigilance system has recently underlined the relative frequency of transfusion-associated bacterial sepsis and the necessity to remain constantly aware of this eventuality. We describe the experience of a hematology unit over a 18-month period: 189 acute transfusion reactions were registered and bacterial cultures of the implicated cellular blood products realized in 82 of them. A positive result was obtained in two cases. For both cases, clinical symptoms of transfusion reaction were limited to a lasting fever, and a skin rash occurred in aplastic patients with preexisting signs of sepsis. The causal relationship between this contamination and the transfusion reaction is difficult to establish. Clinical manifestations justifying a bacterial inquiry must therefore be more precisely defined, particularly in multitransfused patients.

Adult↗

Molecular epidemiology of tuberculosis in the Nord Department of France during 1995.

In order to determine the current situation and to evaluate the human to human transmission of Mycobacterium tuberculosis in Northern France, the genetic polymorphism of strains was studied by using IS6110 fingerprint. One hundred and fifty-eight cases of bacteriologically confirmed tuberculosis were analyzed. One hundred and twenty-six patients (82%) were infected with genetically different isolates and 28 isolates (18%) were grouped into 14 clusters. No risk factors for recent Mycobacterium tuberculosis infections such as age, HIV status, immigrants, living in big cities were identified. This study shows that there was no major epidemic situation of tuberculosis in Northern France in 1995. Tuberculosis was characterized by a low proportion of HIV positive patients and a high proportion of elderly patients.

AIDS-Related Opportunistic Infections↗

Comparison of CHROMagar Salmonella medium and hektoen enteric agar for isolation of salmonellae from stool samples.

CHROMagar Salmonella (CAS), a new chromogenic medium, was retrospectively compared to Hektoen enteric agar (HEA) with 501 Salmonella stock isolates and was then prospectively compared to HEA for the detection and presumptive identification of Salmonella spp. with 508 stool samples before and after enrichment. All stock cultures (100%), including cultures of H2S-negative isolates, yielded typical mauve colonies on CAS, while 497 (99%) isolates produced typical lactose-negative, black-centered colonies on HEA. Following overnight incubation at 37 degreesC, a total of 20 Salmonella strains were isolated from the 508 clinical samples. Sensitivities for primary plating and after enrichment were 95% (19 isolates) and 100% (20 isolates), respectively, for CAS and 80% (16 isolates) and 100% (20 isolates), respectively, for HEA. The specificity of CAS (88.9%) was significantly higher than that of HEA (78.5%; P < 0.0001). On the basis of its good sensitivity and specificity, CAS medium can be recommended for use for primary plating when human stool samples are screened for Salmonella spp.

Agar↗

[Determination of the nosocomial origin of vancomycin-resistance strains of Enterococcus isolated from stool of patients in a hematology department].

Patients severely neutropenic, when hospitalized, occasionally receive selective digestive decontamination, and the risk of vancomycin-resistant strain selection is a drawback since glycopeptide resistance is often associated with betalactam and aminoglycosid resistance. Bacterial translocation can lead to multiresistant bacterial sepsis. Eighteen Enterococcus faecium strains were collected from patients hospitalized in the leukemia unit of the Universitary Hospital of Lille (CHRU, Pr Bauters) between October 1992 and July 1997 and were studied. Nosocomial acquisition or endogenous origin were investigated to choose well-adapted prevention. All the vancomycin-resistant strains were shown by Polymerase Chain Reaction having the van A gene. The clonality of these strains was investigated by Pulsed-Field-Gel-Electrophoresis after Sma I restriction. Pulsotype analysis showed variable homology (52%-100%). Our results do not show evidence of patient-to-patient E. faecium transmission and suggest vancomycin-resistant strains were independently selected by antibiotic therapy from individual fecal flora. Except when epidemic events or happen, this strain isolation is more related to antibiotic prescription than misuse of isolation techniques.

Adult↗

An agency-based representative payee program and improved community tenure of persons with mental illness.

OBJECTIVE: Representative payee programs help severely mentally ill individuals manage money from their Social Security payments to cover expenses for necessities and to avoid homelessness and rehospitalization. This study examined a representative payee program operated by a community mental health center to determine the criteria used by clinicians and ease managers to refer clients to the program and to learn whether participation in the program was associated with reductions in hospitalization. METHODS: The retrospective study included 56 individuals with severe mental illness who were enrolled in the representative payee program at Community Counseling Centers of Chicago for one year and who also had received services from the agency for at least one year before enrollment. Criteria used to refer clients to the representative payee program were determined through chart reviews. Data on state hospitalizations before and after enrollment were available for the entire sample; additional data on Medicaid-funded private hospitalizations were available for a subset of 33 clients. RESULTS: The most common criteria for enrollment in the representative payee program were comorbid substance abuse or dependence (49 percent), a history of homelessness (33 percent), and frequent hospitalizations (32 percent). During the year of participation in the representative payee program, the mean number of days spent in state hospitals decreased markedly compared with the year before enrollment, from 68 days to seven days. A similar reduction was noted in the number of days spent in state and private hospitals, from 97 days to 15 days. CONCLUSIONS: Findings from this pre- and postintervention retrospective study are tentative in the absence of a more rigorous design. However, the results suggest that the representative payee program is quite effective in reducing hospital stays.

Adult↗