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Prediction of circulating adipokine levels by body fat compartments and adipose tissue gene expression. Rev Epidemiol Sante Publique 2018. [DOI: 10.1016/j.respe.2018.05.318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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2
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Vascular Graft Infection: Detection by 123I-Labeled Antigranulocyte Antibody (Anti-NCA95) Scintigraphy. Nuklearmedizin 2018. [DOI: 10.1055/s-0038-1629571] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
A total of 40 scintigraphic examinations were performed after vascular reconstructive surgery in 27 patients in whom there was a clinical suspicion of vascular graft infection. Whole-body gamma camera images were obtained at 4 and 24 h after i.v. administration of 111 MBq 123I-labeled antigranulocyte antibody Anti-NCA95. Scan results were interpreted without clinical information and were subsequently correlated with computed tomography. Prosthetic vascular graft infection was confirmed in 9 patients and excluded in 18 by surgical findings, bacteriology and/or clinical course. Scintigraphy revealed true-positive results in 16 of 40 and false-negative results in 1 of 40 examinations. True-negative results were found in 19 and 16, false-positive results in 4 and 7 examinations at 4 and 24 h p. i., resp. The sensitivity was calculated to be 94% for both early (4 h) and late (24 h) images whereas the specificity was 83% and 70%, resp. In all cases the application of the murine antibody was safe and no side effects or complications were noted. Limitations of this diagnostic procedure are accumulations of granulocytes in hematomas which may be observed in the non-complicated early course following reconstructive surgery.
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Quantitative Estimation of I-123-Iomazenil Receptor Binding in Temporal Lobe Epilepsies Using Two SPECT Acquisitions – Comparison with the Regional Cerebral Blood Flow and a Compartment Model. Nuklearmedizin 2018. [DOI: 10.1055/s-0038-1629792] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Summary
Aim: To compare published fractional rate constants of I-123-lomazenil (IMZ) and C-11-Flumazenil (three-compartment/four-parameter model) with a I-123-lomazenil receptor index calculated from two SPECT acquisitions and to compare the receptor index of the epileptogenic area with the contralateral side in patients with unilateral temporal lobe epilepsies. Methods: 28 patients were studied. 13/28 patients had a drug-resistant unilateral temporal lobe epilepsy with a successful focus localisation performed by an extensive video/EEG monitoring. 15 other patients with clinically suspected focal epilepsy and a normal MRI and IMZ SPECT scanning were used as controls. SPECT scanning was performed in all patients 15 and 100 min after intravenous injection of 111 MBq IMZ and 10 min after application of 740 MBq Tc-99m-HMPAO. Quantification of the regional uptake was performed using ROI-technique and the specific and non-specific binding of IMZ was calculated. The receptor index was calculated by the difference of the specific binding from 15 to 100 min p. i. divided by the time interval. Results: The receptor index showed a linear correlation with recently published fractional rate constants k
3 (r = 0.69 and 0.67; p = 0.15) and a moderate correlation with the k
4 constant (-0.53 and -0.43; p = 0.28) by the means of C-11 -Flumazenil PET and 1-123-lomazenil SPECT studies, respectively. However, statistical significance was not reached due to the few data points available from the published reports. Furthermore, the IMZ receptor index was lower in the epileptogenic area of patients with unilateral temporal lobe epilepsies compared with their contralateral side (p = 0.02; Wilcoxon-test). The IMZ receptor index showed a weak correlation with the regional cerebral blood flow independent of the evaluated region (r <0.4; p <0.05). Conclusion: The IMZ receptor index indicated to be a simple routine approach to estimate the fractional rate constant k
3 (r = 0.67). The lower value of the receptor index within the epileptogenic area might be due to a lower receptor density. However in further studies, IMZ might be a helpful tool to find out subtle changes of the receptor affinity due to its approximately 30-fold higher ligand-receptor affinity compared to C-11-Flumazenil.
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Acetazolamide stimulation test in patients with unilateral internal carotid artery obstructions using transcranial Doppler and99mTC-HM-PAO-Spect. Neurol Res 2016; 14:135-8. [PMID: 1355870 DOI: 10.1080/01616412.1992.11740033] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Fifteen patients with symptoms of cerebral ischaemia and angiographically confirmed unilateral stenoses or occlusions of the extracranial internal carotid artery (ICA) and 20 controls were studied by a 2 MHz transcranial Doppler (TCD) at rest and after stimulation with 1 g acetazolamide i.v., a cerebral vasodilator. In addition, the patients underwent 99mTc-HM-PAO-Spect measurement of regional cerebral blood flow (rCBF) at rest and after stimulation with 1 g acetazolamide. In 10 patients with ICA stenoses greater than 80% or occlusions, time-mean velocity (Vmean) increase and pulsatility index (PI) decrease in the postobstructive middle cerebral artery (MCA) as well as the increase of the ipsilateral rCBF were reduced in comparison with the contralateral side. The remaining 5 patients showed a normal Vmean increase and PI decrease in TCD.
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Erfolgreiche perkutane Behandlung einer aneurysmatischen Knochenzyste des Beckens. ROFO-FORTSCHR RONTG 2016; 188:584-6. [DOI: 10.1055/s-0042-102790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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6
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Vertebroplastie und Kyphoplastie. ROFO-FORTSCHR RONTG 2015. [DOI: 10.1055/s-0035-1551106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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7
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Postpartale Ovarialvenenthrombose – eine wichtige Differenzialdiagnose bei postpartalen Unterbauchschmerzen. ROFO-FORTSCHR RONTG 2014; 186:511-2. [DOI: 10.1055/s-0033-1356026] [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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8
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Vertebroplastie/Kyphoplastie. ROFO-FORTSCHR RONTG 2012. [DOI: 10.1055/s-0032-1311389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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9
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Ablative Tumortherapie - Knochen. ROFO-FORTSCHR RONTG 2012. [DOI: 10.1055/s-0032-1310780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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10
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Vertebroplastie mit praktischen Übungen/Kyphoplastie. ROFO-FORTSCHR RONTG 2012. [DOI: 10.1055/s-0032-1310810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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11
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Interventionelle Schmerztherapie, Vertebroplastie und Kyphoplastie. ROFO-FORTSCHR RONTG 2012. [DOI: 10.1055/s-0032-1310878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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12
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Häufigkeit von Sandwich-Wirbelkörperfrakturen nach perkutaner Vertebroplastie bei Patienten mit Osteoporose. ROFO-FORTSCHR RONTG 2012. [DOI: 10.1055/s-0032-1311293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Vergleich eines „cement-directing Kyphoplastiesystems“ mit der perkutanen Vertebroplastie bezüglich Zementleckage: Ergebnisse einer kontrollierten randomisierten Studie. ROFO-FORTSCHR RONTG 2011. [DOI: 10.1055/s-0031-1279397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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14
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Vertebroplastie mit praktischen Übungen/Kyphoplastie. ROFO-FORTSCHR RONTG 2011. [DOI: 10.1055/s-0031-1278959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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15
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Kritische Bewertung der Vertebroplastie/Kyphoplastie. ROFO-FORTSCHR RONTG 2010. [DOI: 10.1055/s-0030-1252362] [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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16
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Vertebroplastie mit praktischen Übungen/Kyphoplastie. ROFO-FORTSCHR RONTG 2010. [DOI: 10.1055/s-0030-1252401] [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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17
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[CT diagnosis of small intestine invagination due to small intestinal lipoma in an adult patient]. ROFO-FORTSCHR RONTG 2009; 182:73-4. [PMID: 19697280 DOI: 10.1055/s-0028-1109619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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18
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Kyphoplastie/Vertebroplastie mit praktischen Übungen. ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1221150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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19
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Kyphoplastie/Vertebroplastie mit praktischen Üb. ROFO-FORTSCHR RONTG 2008. [DOI: 10.1055/s-2008-1073342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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20
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Kyphoplastie/Vertebroplastie mit praktischen Übungen. ROFO-FORTSCHR RONTG 2007. [DOI: 10.1055/s-2007-976706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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21
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Aufrichtung der Wirbelkörper durch Vertebroplastie? Eine retrospektive Analyse. ROFO-FORTSCHR RONTG 2006. [DOI: 10.1055/s-2006-940924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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22
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Kyphoplastie/Vertebroplastie mit praktischen Übungen. ROFO-FORTSCHR RONTG 2006. [DOI: 10.1055/s-2006-940283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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23
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Kyphoplastie/Vertebroplastie mit praktischen Übungen. ROFO-FORTSCHR RONTG 2006. [DOI: 10.1055/s-2006-940279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Inzidenz symptomatischer Folgefrakturen nach perkutaner Vertebroplastie osteoporotischer Wirbelkörperfrakturen. ROFO-FORTSCHR RONTG 2006. [DOI: 10.1055/s-2006-940925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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25
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[Reversible posterior leukoencephalopathy syndrome]. ROFO-FORTSCHR RONTG 2005; 177:1715-7. [PMID: 16333797 DOI: 10.1055/s-2005-858755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Destruction of the vestibular organ by Langerhans' cell histiocytosis. Eur Radiol 2005; 16:1177-8. [PMID: 16328448 DOI: 10.1007/s00330-005-0024-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2005] [Accepted: 08/23/2005] [Indexed: 11/24/2022]
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27
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[Reversible intradiscal vacuum phenomenon after percutaneous kyphoplasty]. ROFO-FORTSCHR RONTG 2005; 177:777-9. [PMID: 15902644 DOI: 10.1055/s-2005-870033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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28
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Anschlussfrakturen nach Vertebroplastie - Komplikation der VTP oder Verlauf der Grunderkrankung? ROFO-FORTSCHR RONTG 2005. [DOI: 10.1055/s-2005-867832] [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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29
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Kritischer Einsatz der Vertebroplastie/Kyphoplastie an der Wirbelsäule. ROFO-FORTSCHR RONTG 2005. [DOI: 10.1055/s-2005-867230] [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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Abstract
PURPOSE To evaluate the usefulness of osseous phlebography preceding percutaneous vertebroplasty. MATERIALS AND METHODS Seventy-five patients with painful osteoporotic (57) or malignant (18) vertebral fractures were treated by percutaneous vertebroplasty under fluoroscopic control. Prior to cement injection, osseous phlebography was performed, with 247 phlebographic studies included in the retrospective correlation with radiographic and CT images. Clinical results were assessed by standardized questionnaire. RESULTS In 69/75 (92 %) patients, pain and mobility improved and medication needed for pain control decreased significantly after vertebroplasty. Two clinically apparent complications occurred. The results of osseous phlebography prompted correction of the needle position in 34/247 (14 %) of the procedures and cancellation of the cement injection in 19/247 (8 %). No complications occurred related to osseous phlebography. CT was superior to conventional radiography in detecting extra-osseous cement leakage (106/247 by CT vs. 63/247 by conventional radiography). The cement leakage was asymptomatic in 104/106 (98 %) cases for the duration of follow-up. DISCUSSION Osseous phlebography prior to percutaneous vertebroplasty had a significant impact on the procedure in our retrospective study and was able to predict the cement distribution in the majority of cases. However, phlebography was unable to foresee and therefore prevent 2 clinically relevant complications. Complications related to phlebography did not occur.
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Perkutane Vertebroplastie. ROFO-FORTSCHR RONTG 2004. [DOI: 10.1055/s-2004-827441] [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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Abstract
In many countries, percutaneous vertebroplasty became a widely accepted therapeutic option in osteoporotic and neoplastic fractures of the vertebral bodies which is employed in more and more patients. Under image guidance the method can be safely performed and provides a high success rate regarding stabilization of vertebral fractures and pain relief. Due to the increasing interest in vertebroplasty in Germany the German Radiological Society-Working Group on Interventional Radiology decided to produce guidelines for percutaneous vertebroplasty. This guidelines are based on the recent standard of knowledge and represent a guide for practical performance of this procedure. Based on the technical development of the method, indications and implementation of the method in multimodal therapy regimens may change over the next years. Therefore, this guidelines are not a rigid body of rules but a basis for an ongoing development adjusted to the scientific progress and the interdisciplinary discussion.
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Abstract
With the objective of monitoring the distribution of HIV-1 subtypes and circulating recombinant forms (CRFs)in South America, population-based surveillance studies were performed in seven countries. Peripheral blood mononuclear cell, filter paper, fresh blood, and cocultivation samples were collected from HIV-positive patients from Colombia, Ecuador, Peru, Bolivia, Chile, Argentina, and Uruguay, during a 7-year period(1995-2001). DNA was prepared and HIV envelope subtypes were determined by heteroduplex mobility as-say and DNA sequencing from 1289 HIV-positive samples. While subtypes B and F were the most commonly observed subtypes, two CRF02_AG strains were detected, in Ecuador. This is the first report of the existence of this CRF in South America.
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Molecular Epidemiology of HIV Type 1 in Ecuador, Peru, Bolivia, Uruguay, and Argentina. AIDS Res Hum Retroviruses 2002; 18:1339-50. [PMID: 12487805 DOI: 10.1089/088922202320935410] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Surveillance for HIV infection among people at increased risk was conducted in five countries in South America. Seroprevalence studies were conducted in more than 36,000 people in Ecuador, Peru, Boliva, Uruguay, and Argentina, along with genetic analysis of the HIV-1 strains. In all countries, the prevalence of HIV-1 among men who have sex with men (MSM) was high (3-30%), whereas the prevalence among female commercial sex workers (FCSMs) was low (0.3-6%). By envelope heteroduplex mobility assay, subtype B predominated in MSM communities and in FCSWs in Ecuador, Bolivia, and Peru. A new genetic screening assay, the multiregion hybridization assay for subtypes B and F (MHA-bf), was developed to improve large-scale genetic screening in South America. MHA-bf can screen four regions of the genome for subtype B or subtype F, and thus can detect most recombinants. The sensitivity of MHA-bf when applied to a panel of pure subtypes and CRF12_BF was 100%, and 88% of unique recombinants were also detected as recombinant. Using MHA-bf, more than 80% of samples from Ecuador, Peru, and Bolivia were classified as pure subtype B, whereas in Uruguay and Argentina this proportion was only 30 to 40%. BF recombinants were the most prevalent form of HIV-1 in Uruguay and Argentina. Subtype B is the most common subtype in countries lacking injecting drug use (IDU) epidemics, whereas BF recombinants are more common in countries where extensive IDU epidemics have been documented, suggesting the ontogeny of recombinant strains in particular risk groups in South America.
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[Detection of extra-articular soft-tissue involvement in rheumatoid arthritis: value of color-coded Doppler sonography]. ULTRASCHALL IN DER MEDIZIN (STUTTGART, GERMANY : 1980) 2002; 23:392-396. [PMID: 12514756 DOI: 10.1055/s-2002-36171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
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[Cavernous haemangioma in the Muscularis propria of the oesophagus and in the paraoesophageal tissue]. ZEITSCHRIFT FUR GASTROENTEROLOGIE 2002; 40:413-8. [PMID: 12055665 DOI: 10.1055/s-2002-32123] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
This is a case report of a 45-year-old woman who presented herself in our hospital with increasing retrosternal tenderness to pressure, dysphagia, and symptoms of reflux oesophagitis. The clinical examination and laboratory results showed no pathological findings. Oesophagogastroduodenoscopy revealed a bluish-livid, bulging mass from 32-38 cm aborally. A malignancy could not be excluded by biopsies with histological work-up, endoscopical ultrasound, nor CT-scan. By thoraco-abdominal surgery, a 5 cm large vascularised tumour of the outer layers of the oesophagus and the paraoesophageal tissue was resected. After intrathoracic oesophago-gastrostomy the patient could be discharged 17 days after surgery without further symptoms. Histology showed a benign tumour which was classified as cavernous haemangioma. To our knowledge, this is the first case of a haemangioma which involves the paraoesophageal tissue and the muscularis propria. The few published case reports of cavernous haemangioma of the oesophagus describe only an involvement of the mucosa and submucosa.
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Mother-to-child HIV type 1 transmission in Argentina: BF recombinants have predominated in infected children since the mid-1980s. AIDS Res Hum Retroviruses 2002; 18:477-83. [PMID: 12015900 DOI: 10.1089/088922202317406619] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The molecular epidemiology of HIV-1 in Argentina is more complex than was previously appreciated. One circulating recombinant form, CRF12_BF, and many related BF recombinant forms predominate in the capital city, Buenos Aires. This study of HIV-1 subtypes acquired perinatally between 1984 and 2000 has permitted, for the first time, a reconstruction of the history of BF recombination in Argentina. Sequencing of a partial genome region from the beginning of vpu to the beginning of env(gp120), which spans a breakpoint common in most contemporary Argentine BF recombinants, enabled samples to be rapidly screened. Among 23 children born between 1984 and 2000, 15 including 1 child born in 1986, harbored a BF recombinant. Thirteen of the 15 recombinants shared a common breakpoint at the 5' end of env(gp120). Full genome sequencing of two viruses, from 1986 and 1987, respectively, revealed them to be genetically related but not identical to CRF12_BF. Both contained more subtype B sequence than did CRF12_BF. BF recombinants related to CRF12_BF have been in circulation in Buenos Aires since 1986 and continue to predominate in perinatal transmissions.
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Two HIV-1 epidemics in Argentina: different genetic subtypes associated with different risk groups. J Acquir Immune Defic Syndr 2002; 29:422-6. [PMID: 11917249 DOI: 10.1097/00126334-200204010-00015] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
This study determined the risk behaviors and viral subtypes of HIV-1 found in 134 heterosexual HIV-seroprevalent maternity patients, 41 of their sexual partners (men who have sex with women [MSW]), and 95 homosexual men (men who have sex with men [MSM]) from Buenos Aires, Argentina. Peripheral blood mononuclear cells (PBMCs) were purified from blood and used for DNA extraction, amplification, and genotyping by the envelope heteroduplex mobility assay (env HMA). Most of the women had been infected by having sex with an already infected partner (84%), whereas most of the male partners had been infected via drug use (76%). Both the patients and their sexual partners were poorly educated, only 30% having completed secondary school. The MSM study subjects, however, were significantly better educated and had a lower prevalence of injecting drug use.Env HMA subtype F was found in 77% (103 of 134) of the maternity patients, with similar rates in their partners (73%). Most of the remaining samples were env subtype B. All but one of the couples was concordant in subtype. In the MSM risk group, however, only 10% were env HMA subtype F. Ninety percent of the MSM samples were subtype B. There are at least two independent epidemics of HIV-1 infection in Buenos Aires, Argentina. One, in heterosexual men and women, is dominated by env subtype F whereas the other, in homosexual men, is dominated by env subtype B, as determined by env HMA.
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Abstract
PURPOSE To describe the procedure of percutaneous vertebroplasty and to present our first clinical results of patients treated for benign or malignant painful vertebral body disease. MATERIAL AND METHODS We performed percutaneous vertebroplasty in 31 painful lesions of the spine. Liquid bone cement was injected into the affected vertebral body using fluoroscopic guidance through a bilateral transpedicular approach. Etiology of the bone disease was assessed by biopsy. Pain intensity was assessed before and 1 week after the procedure by standardized catalogue. RESULTS Percutaneous vertebroplasty was performed in 17 thoracic and in 14 lumbar spine bodies of benign (n = 23) or malignant (n = 8) disease; no clinically relevant complications occurred. All patients reported significant pain relief 1 week after the intervention. One week after treatment, patients were pain-free in 15/31 vertebral bodies, and reported mild residual pain not necessitating narcotic medication in 16/31 cases. CONCLUSION In accordance with the literature, percutaneous vertebroplasty proved to be a highly effective, minimal invasive interventional procedure to treat severely painful bone lesions of benign and malignant origin.
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Abstract
OBJECTIVE To describe the genetic diversity of HIV-1 in South America by full genome sequencing and analysis. METHODS Purified peripheral blood mononuclear cell DNA from HIV-infected individuals in Argentina, Uruguay and Bolivia was used to amplify full HIV-1 genomes. These were sequenced using the ABI 3100 automated sequencer and phylogenetically analysed. RESULTS Twenty-one HIV-1 strains from three South American countries, 17 of which were pre-screened by envelope heteroduplex mobility assay (HMA), were studied. Ten out of 10 HMA subtype F and four out of seven HMA subtype B strains were actually BF recombinants upon full genome analysis. Two BF recombinants from Argentina and two from Uruguay had the same structure, representing a new circulating recombinant form termed CRF12_BF(ARMA159). Twelve other BF recombinants had structures related to CRF12 but with additional segments of subtype B; each was unique. BF recombinants were temporally and geographically widespread, found as early as 1986-1987 in vertically infected Argentinian children and in Argentina, Uruguay, and Bolivia.
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Bone mineral density in pre-and post-menopausal women with affective disorder treated with long-term L-thyroxine augmentation. J Affect Disord 2001; 66:185-91. [PMID: 11578671 DOI: 10.1016/s0165-0327(00)00306-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
BACKGROUND Augmentation with TSH-suppressive L-thyroxine (T4) has been shown to improve the course of illness in otherwise refractory affective disorders. This collaborative study investigates whether T4 augmentation for a minimum of 12 months decreases bone mineral density (BMD) in 26 pre- and post-menopausal women with affective disorder. METHODS We measured BMD at the femoral neck, Ward's triangle, trochanter and lumbar vertebrae (L1-L4) in 13 premenopausal and 13 postmenopausal women with affective disorder using dual energy X-ray absorptiometry. BMD was expressed as g/cm(2) and as a Z-score, calculated using bone density data from the international reference population standard. RESULTS The Z-scores for the pre- and post-menopausal women were within the reference range of the age and sex matched population standard. BMD for the composite group also did not differ either from the population standard. BMD in the lumbar spine and hip did not differ significantly between the pre- and post-menopausal groups. However, there were a relatively high number of postmenopausal patients with BMDs one S.D. lower than the population standard. LIMITATIONS This is a cross-sectional study with a relatively small sample size. CONCLUSIONS The study demonstrates that T4 augmentation treatment does not reduce BMD to a clinically significant degree in many women with affective disorder. However, the resilience of bone structure to T4 treatment may vary with site and menopausal status. This study underscores the need for regular assessment of BMD during adjunctive thyroid treatments for affective disorder, especially in postmenopausal women.
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[Role of flowmetric analysis and of color-Doppler ultrasonography with contrast media in the different phases and follow-up of Graves' disease]. LA RADIOLOGIA MEDICA 2001; 102:233-7. [PMID: 11740450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
PURPOSE The objectives of this study were: 1) to evaluate the role of color-Doppler ultrasonography (CDU) assessment of thyroid vascularity, measuring the peak systolic velocity (PSV) at the level of the inferior thyroid artery, and the intrathyroid vascularization in Graves' diseas; 2) to evaluate the role of contrast agent administration in predicting the relapse of hyperthyroidism or the biological activity of the disease after withdrawal of antithyroid drugs. PATIENTS AND METHOD The study included 74 Graves' patients (59 F/ 15 M; mean age 45 years; range 23-71). Graves' disease was diagnosed according to the usual clinical and laboratory criteria. On the basis of the clinical and biochemical findings we divided Graves' patients into 4 different groups. Treatment was continued for at least 12 months, CDU examination was carried out after discontinuing therapy. Eight patients showed a relapse of hyperthyroidism within 5 months after suspension of therapy. In all cases the evaluation of intraparenchymal vascularization and PSV at the level of the inferior thyroid artery in basal conditions was followed by administration of contrast agent (Levovist, 300 mg/ml), with slow infusion (<2 ml/min) to avoid blooming artifact. Intraparenchymal vascularization was classified into 4 patterns according to Vitti et al. RESULTS The value of the peak systolic velocity (PSV) at the level of the inferior thyroid artery was the best predictor of relapse. A value higher than 40 cm/sec was present in all the patients that showed relapse and only in two patients with stable remission. Administration of contrast agent is important to evaluate the biological activity of the disease. In the 5 patients exhibiting slightly increased vascularization after contrast agent administration we could assume the clinico-pathological recovery. CONCLUSIONS CDU study of thyroid vascularization, based on the measurement of PSV at the level of the inferior thyroid artery and on the response to contrast agent administration is useful to distinguish three groups of patients: A) PSV >40 cm/sec with pattern III for at least 10 minutes from the beginning of the contrast agent administration (High risk of relapse); B) PSV <40 cm/sec with pattern II or III after contrast agent administration (Biological activity of the disease-Thyroiditis); C) PSV <40 cm/sec with Pattern I after contrast agent administration (Poor biological activity of the disease-recovery).
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[Diagnosis of pancreas annulare using MR-cholangiopancreatography]. ROFO-FORTSCHR RONTG 2001; 173:M161. [PMID: 11496844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
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Magnetic resonance imaging in distinguishing malignant from benign pleural disease. Chin Med J (Engl) 2001; 114:645-9. [PMID: 11780445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023] Open
Abstract
OBJECTIVE To explore the role of magnetic resonance imaging (MRI) in distinguishing malignant from benign pleural disease. METHODS All 64 patients were examined with both computed tomography (CT) and MRI. The morphologic features of pleural lesions and MR signal intensity on T1-weighted, T2-weighted and contrast-enhanced T1-weighted images were evaluated. RESULTS Mediastinal pleural involvement, circumferential pleural thickening, nodularity, irregularity of pleural contour, and infiltration of the chest wall and/or diaphragm were most suggestive of a malignant cause on CT and MR images. Contrary to what has been reported in the literature, pleural thickness greater than 1 cm either on CT or on MRI did not reveal a significant difference between malignant and benign pleural disease (P > 0.05, chi-square test). Using morphologic features in combination with signal intensity features, MRI had a sensitivity of 98% and a specificity of 92% in the detection of pleural malignancy. CONCLUSIONS Compared with those on CT, the morphologic features on MRI allowed a mostly equal and in some cases superior detection and evaluation of the spread of pleural disease. In combination with signal intensity and morphologic features, MRI is very useful in distinguishing malignant from benign pleural disease.
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Quiz case of the month. Latero-ventral hernia of the abdominal wall (Spigelian hernia). Eur Radiol 2001; 10:1839-40. [PMID: 11097420 DOI: 10.1007/pl00021060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Familial recurrence of spontaneous fetal intracranial hemorrhage: ultrasonographic diagnosis and postnatal magnetic resonance imaging (MRI). ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2001; 17:248-251. [PMID: 11309177 DOI: 10.1046/j.1469-0705.2001.00351.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
We report fetal intracranial hemorrhage in term siblings from consanguineous parents, spontaneously occurring in the third trimester of pregnancy. Prenatal ultrasound in one case and postnatal MRI in both demonstrated massive parenchymal bleeding involving large areas of the cerebral cortex, white and gray matter. Vasculopathies, vascular malformations, coagulopathies, thrombocytopenia and relevant metabolic disorders could be excluded.
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[Hematemesis of uncertain origin. Cavernous stomach hemangioma]. Radiologe 2001; 41:211-4. [PMID: 11253109 DOI: 10.1007/s001170050966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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[Abdominal hemorrhage in multiple intrahepatic aneurysms]. Chirurg 2001; 72:82-5. [PMID: 11225462 DOI: 10.1007/s001040051272] [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: 11/26/2022]
Abstract
A 17-year-old male patient presented with diffuse abdominal pain, acute drop in hemoglobin and free subhepatic fluid. The patient was transferred to our unit for investigation of presumed spontaneous hepatic bleeding. Questioning revealed daily medication of 2 g acetylsalicylic acid because of influenzal infection. At exploratory laparoscopy 1.8 l hematoma was removed; the origin of bleeding could not be identified. The liver surface appeared macroscopically unremarkable, with the exception of an aneurysmal dilatation of the cystic artery that was considered as possible bleeding cause. Postoperative angiography confirmed the presence of multiple aneurysmal dialatations of both left and right hepatic arteries. Extensive investigations did not show any further aneurysms or vascular abnormalities in any other part of the body. There was no evidence of a preexistent systemic vasculitis or primary collagen disease.
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