Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Social Science & Medicine 17 (1983), S. 1743-1750 
    ISSN: 0277-9536
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Social Science & Medicine 17 (1983), S. 1827-1830 
    ISSN: 0277-9536
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    ISSN: 1432-1440
    Keywords: HIV-1 ; Endothelins ; Endothelin-1 ; Cytokine ; Retinal microangiopathic syndrome ; Vascular disease
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Endothelin-1 is a recently identified cytokine with potent vasoconstrictor activity which is associated with various diseases involving blood vessels. HIV-1 related retinal microangiopathic syndrome is a frequent finding in patients with AIDS or AIDS-related complex, presenting predominantly with retinal cotton-wool spots. We investigated 55 HIV-1 infected patients by ophthalmoscopy and for endothelin-I immunoreactivity in plasma and an additional 76 HIV-1 infected patients only for endothelin-1 levels. For reference values 13 age-matched healthy subjects were studied. In 18 of 55 patients (33%) investigated ophthalmoscopically we found evidence of microangiopathic syndrome. Overall, the mean endothelin-1 immunoreactivity in plasma of HIV-1 infected patients was significantly elevated as compared to controls (4.28 ± 3.62 versus 2.72 ± 0.67 fmol/ml, P 〈 0.0001). HIV-1 infected patients with retinal microangiopathic syndrome had significantly higher plasma levels of endothelin-1 immunoreactivity (4.59 ± 1.38 fmol/ ml) compared to HIV-1 infected patients without microangiopathic syndrome (3.18 ± 1.64 fmol/ml, P = 0.003). Correlation analysis revealed that endothelin-1 immunoreactivity in plasma had no significant association with disease progression, CD4 cell count, β2-mi-croglobulin, neopterin, or age. Endothelin-1 immunoreactivity in plasma was correlated exclusively with retinal microangiopathic syndrome in one or both eyes (r = 0.45, P = 0.0006) and with the number of cotton-wool spots (r = 0.50, P = 0.0001). In conlusion, HIV-1 related retinal microangiopathic syndrome is associated with elevated plasma levels of endothelin-1. By virtue of its potent vasoconstrictor activity endothelin-1 may be involved in the pathogenesis of HIV-1 related vascular disease.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 72 (1994), S. 985-991 
    ISSN: 1432-1440
    Keywords: Cell volume ; Na+/H+ antiporter activity ; Human mononuclear leukocytes ; Angiotensin-converting enzyme inhibitor ; Diuretic therapy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Previous studies in patients with congestive heart failure (CHF) treated with diuretics and/or digoxin have shown abnormalities of cellular volume and electrolytes in biopsies of skeletal muscle. These abnormalities seem to play an important role with regard to the dysregulation of peripheral vascular resistance and characteristic clinical features of CHF, for example, muscular weakness. This study assessed the effect of angiotension-converting enzyme (ACE) inhibitor therapy on cell volume and cell volume regulation in patients with CHF. Cell diameters of human mononuclear leukocytes (HML) were determined electronically by a Coulter Counter. Cell diameters for 19 patients with decreased left ventricular ejection fraction (determined via levocardiography) on therapy with ACE inhibitors (group 1) were compared to those of HML from patients on diuretics alone (group 2,n = 16). The activity of the Na+/H+ antiporter was determined by cell swelling in isotonic propionate. The control group consisted of 20 normal, age- and sex-matched volunteers. HML diameters were significantly increased from 7.16 ± 0.07 in normals to 7.24 ± 0.08 μm (group 1;P 〈 0.01) and 7.23 ± 0.11 μm (group 2;P 〈 0.05), indicating an abnormal regulation of cell volume. There were no statistically significant correlations between the individual ejection fraction or digoxin therapy and average cell diameters. In both patient groups ethylisopropylamiloride-sensitive swelling rates were normal compared to the control group indicating a normal activity of the Na+/H+ antiporter. In conclusion, increased cell sizes reflect a structural change in HML rather than a rapidly reversible functional abnormality which was not affected different by ACE inhibition and diuretic therapy. The pathomechanisms underlying abnormal cell sizes in CHF patients remain to be determined but could be similar to those responsible for muscular changes in CHF. Further studies should show whether HML, being easily accessible, are a valid cell model to reflect these muscular abnormalities in CHF, and whether a normal cell size can be achieved therapeutically by normalized neurohumoral activities.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 5
    ISSN: 1432-1440
    Keywords: Congestive heart failure ; PDE inhibition ; Positive inotropic action
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Enoximone, a phosphodiesterase-inhibitor, is a potent inotropic vasodilator agent that causes a marked improvement in hemodynamics in patients with congestive heart failure. The acute effects of oral enoximone on rest and exercise hemodynamics, ejection fraction, aerobic metabolism, exercise capacity, and arrhythmias were studied in 11 patients with moderate to moderately severe dilative cardiomyopathy after 8 days of enoximone (100 mg tid) in addition to baseline therapy (diuretics and digitalis). The cardiac index increased from 2.44±0.45 to 2.72±0.50 l/min/m2 (p〈0.01) at rest and from 4.00±0.96 to 4.75±0.95 l/min/m2 (p〈0.005) during exercise. Pulmonary wedge pressure decreased from 16.8±7.3 to 12.5±6.5 mmHg (p〈0.005) at rest and from 28.2±8.0 to 24.5±10.3 mmHg (p〈 0.05) during exercise. Systemic vascular resistance decreased from 1608±243 to 1495±300 dynes*sec*cm−5 (p〈0.05) at rest and from 1152±155 to 1027±236 dynes*sec*cm−5 (ns) during exercise. The anaerobic threshold, which was recorded simultaneously, increased from 13.2±2.7 to 15.5± 2.5ml/kg/min VO2 (p〈0.02). The radionuclide ventriculography ejection fraction improved from 21.7±5.0 to 28.1±9.1% (p〈0.01) during exercise; the changes at rest were not significant (20.8±6.2 vs 25.8±8.4%). Exercise tolerance showed an increase of 16% (492±133 to 573±135 sec, p〈 0.005). The resting heart rate remained unchanged (81.8±13.4 vs 81.8±11.9). Interestingly, 24-h Holter monitoring revealed more or new repetitive arrhythmias in 9/11 patients. Short-term therapy with oral enoximone enhances ventricular performance by increasing cardiac contractility and lowering vascular resistance, both of which extend exercise tolerance and improve aerobic metabolism. Potential proarrhythmic effects need further evaluation, however.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 6
    ISSN: 1433-0423
    Keywords: Schlüsselwörter Chagas-Krankheit ; Parasitäre Infektion ; Romaña-Zeichen ; Retinales Pigmentepithel ; Key words Chagas' disease ; Parasitic infection ; Romaña's sign ; Retinal pigment epithelium
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Background: In Central and South America, Chagas' disease is of great epidemiologic importance. The epidemiologic agent is represented by Trypanosoma cruzi, a monocellular parasite, instrumental in human infection is the presence of vectors, which are various species of hematophagous bugs. The eye is one of the most important entrance sites of the parasite, and relatively little information about the relationship between Chagas' disease and eye complications is available. Patients and methods: We examined 79 chagasic patients in order to detect changes in the retina. As a control group, we examined 48 patients with negative serology within the same age range and from the same regions. For every patient we completed a routine ophthalmologic examination, with inspection of the retina using direct and indirect ophthalmoscopy. Results: In most of the chagasic patients, the ocular fundus was unobtrusive; in only 6 out of 79 cases (7.6%) we did observe small parafoveolar retinal pigment epithelium defects and in 1 case (1.3%) distinct pigment epithelium atrophy of the posterior pole. No comparable findings were observed in the control group. Conclusion: Compared with the examination results of the control group, in the patients with intermediate and chronic Chagas' disease we observed an accumulation of retinal pigment epithelium defects, which, however, did not cause a significant loss of vision.
    Notes: Fragestellung: Welche Netzhautveränderungen können bei der in Südamerika endemischen, durch Trypanosoma cruzi hervorgerufenen Chagas-Krankheit beobachtet werden? Patienten und Methode: In der vorliegenden Studie wurden 79 infizierte Patienten ophthalmologisch untersucht, um Informationen über mögliche Netzhautveränderungen zu bekommen. Bei jedem Patienten wurden die Netzhaut mit direkter und indirekter Ophthalmoskopie untersucht sowie, bei vorliegenden Augenhintergrundsveränderungen, eine fluoreszenzangiographische Untersuchung durchgeführt. Mit derselben Methode wurde eine Kontrollgruppe von 48 nichtinfizierten Patienten untersucht. Ergebnisse: Bei 6 der 79 Patienten (7,6%) fanden wir kleine parafoveolare Defekte des retinalen Pigmentepithels sowie in 1 Fall (1,3%) eine ausgeprägte Pigmentepithelatrophie des hinteren Augenpols. Die Kontrollgruppe lieferte keine vergleichbaren Befunde. Schlußfolgerung: Erstmals wurde in dieser Studie eine größere Gruppe von Chagas-Patienten ophthalmologisch untersucht. Die Ergebnisse zeigen, daß man auch intraokulare Veränderungen erwarten kann, die bei den hier untersuchten Patienten allerdings keine signifikanten Visuseinschränkungen verursachten.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 7
    ISSN: 1433-0423
    Keywords: Schlüsselwörter Kongenitale Tränenwegsstenose ; Silikonschlauchintubation ; Transnasaler Ankerfaden ; Keywords Congenital nasolacrimal duct obstruction ; Silicone intubation ; Transnasal anchor thread
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract Background. In silicone intubation of the nasolacrimal duct for congenital obstruction, retrieval of the guide thread behind the inferior turbinate can be difficult and time consuming. To facilitate this maneuver a modification of the conventional technique has been developed. Patients and method. In the conventional technique, a hollow probe was inserted into both lacrimal puncti and pushed downward into the nasal cavity. A guide thread was forwarded into the pharynx. Using the same hollow probe, a third guide thread was inserted transnasally and also forwarded into the pharynx. These three threads were pulled out of the pharynx transorally and tied together. Pulling on the nasal aspect of the transnasal guide brought all guides back into the pharynx and out of the nose. The intubation was completed in the conventional way. Results. The new method was evaluated in 13 children. With the conventional technique the mean duration of the operation was 35 min, but the time required varied greatly among individuals due to retrieval of the guides. In contrast, no guide retrieval problem occurred using the new technique, and the average duration was reduced to 25 min. No adverse effect was observed. Conclusion. Using a simple modification, difficulties with the retrieval of the guide thread could be avoided, thus facilitating the procedure of nasolacrimal duct intubation and reducing its duration.
    Notes: Zusammenfassung Hintergrund. Bei der Silikonschlauchintubation der Tränenwege im Kleinkindalter bereitet das Ausleiten des Führungsfadens aus der Nase zuweilen Schwierigkeiten. Eine geringfügige Modifikation der herkömmlichen Technik wurde entwickelt, um diesen Schritt zu erleichtern. Methode. Nach üblicher Technik wird eine Hohlsonde über beide Tränenpünktchen in das Cavum nasi eingebracht. Je ein Führungsfaden wird bis in den Pharynx vorgeschoben. Mittels Hohlsonde wird ein 3. Faden transnasal in den Pharynx gelegt. Diese 3 Fäden werden durch den Mund aus dem Pharynx hervorgezogen und verknotet. Durch Zug am nasalen Ende des transnasalen Führungsfadens erscheinen alle 3 Führungsfäden vor der Nase. Die Intubation wird in herkömmlicher Weise beendet. Ergebnisse. Das neue Verfahren wurde bei 13 Kindern ausgewertet. Während mit herkömmlicher Technik, bedingt durch das Auffinden des Führungsfadens, die Dauer des Eingriffs schwer einschätzbar war und im Mittel 35 min betrug, konnte sie mit der modifizierten Technik reproduzierbar auf 25 min reduziert werden. Es wurden keine nachteiligen Effekte beobachtet. Schlussfolgerung. Mithilfe einer einfachen, kostenneutralen Modifikation konnten Schwierigkeiten bei der nasalen Ausleitung des Führungsfadens umgangen und damit der Ablauf der Tränenwegsintubation erleichtert und deren Dauer verkürzt werden.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 8
    ISSN: 1433-0423
    Keywords: Schlüsselwörter Demodex folliculorum ; Chronische Blepharitis ; 2%ige Quecksilbersalbe ; Lindan (Jacutin®) ; Key words Demodex folliculorum ; Chronic blepharitis ; Mercury ointment ; 2% ; Lindan
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Demodex folliculorum has been demonstrated with an elevated frequency in patients with blepharitis, and is thought to cause therapy-resistant blepharitis. This paper presents the germ spectrum of patients with blepharitis and demodex and discusses the efficiency of a specific therapy. Methods. In all, 3152 cilia from 139 patients with blepharitis (38% blepharitis, 44% blepharoconjunctivitis, others) and 108 persons with quiet eyes were examined for demodex. Smears n = 125, from the conjunctive of symptomatic patients were investigated for bacteria, 3 weeks of therapy with mercury ointment, 2%: Lindan, cortisone (prednisolone, dexamethasone, hydrocortisone, fluorometholone) or antibiotics after antibiogram (gentamicin, kanamicin, neomicin, erythromicin, ofloxacin, polymyxin-B, colistin) followed in all Demodex-positive blepharitis patients (n = 41). Results. Demodex was found in 52% (62/139) of patients with chronic blepharitis, as against 20% (3/15) of those with acute blepharitis (statistically significant difference, χ 2-test, α = 2.5%) and in 29% of quiet eyes (statistically significantly less, α = 2.5%, χ 2-test). Gram-positive cocci were isolated from 79% of 57 Demodex-positive patients with blepharitis and 72% of 68 Demodex-negative patients anaerobes in 39% and 37%, gram-negative rods in 11% and 3% (statistically significant difference for gram-negative rods, α = 5%, χ 2-test). Of the patients with Demodex, 25% apparently had no more parasites after mercury ointment, 2% (n = 8) and lindan (n = 5) and 15% after cortisone and antibiotics (n = 13). (The best and statistically very significant results (α = 1%) were those obtained with mercury ointment, 2%, and lindan: t-test for connected spot checks). Conclusions. Gram-positive and gram-negative bacteria grew more often in patients with Demodex. Demodex seems to be a mediator of chronic blepharitis; we recommend that mites be sought in cilia of chronic blepharitis patients. Mercury ointment, 2% and lindan proved efficient for specific therapy, the main problem being the laborious application and toxicity.
    Notes: Demodex folliculorum wurde vermehrt bei Blepharitispatienten nachgewiesen und als Vermittler therapieresistenter Blepharitiden postuliert. Diese Studie zeigt das Erregerspektrum von Blepharitispatienten mit positivem Demodexnachweis sowie die Effizienz einer spezifischen Therapie. Methode: 3152 Wimpern von 139 Blepharitispatienten (38% Blepharitis, 44% Blepharokonjunktivitis, 18% sonstige) und 108 Normalprobanden wurden auf Demodex untersucht, 125 Bindehautabstriche wurden vorgenommen. 41 Demodex-positiven Blepharitispatienten applizierten wir 3 Wochen 2%ige Quecksilbersalbe, Lindan (Jacutin®), Kortison (Prednisolon, Dexamethason, Hydrokortison, Fluorometholon) und Antibiotika nach dem Antibiogramm (Gentamycin, Kanamycin, Neomycin, Erythromycin, Ofloxacin, Polymyxin-B, Colistin). Ergebnisse: Demodex wurde in 52% der Fälle (62 von 139) bei chronischer Blepharitis und in 20% der Fälle (3 von 15) bei akuter Blepharitis nachgewiesen (statistisch signifikanter Unterschied im χ 2-Test, α = 2,5%), im Normalkollektiv bei 29% der Probanden (31 von 108) (statistisch signifikant weniger, α = 2,5%, χ 2-Test). Isoliert wurden grampositive Kokken bei 79% der 57 Demodex-positiven Blepharitispatienten und 72% der 68 Demodex-negativen, Anaerobier bei 39 vs. 37% und gramnegative Stäbchen bei 11 vs. 3% (statistisch signifikanter Unterschied bei gramnegativen Stäbchen für α = 5%, χ 2-Test). 2%ige Quecksilbersalbe, (n = 8) und Lindan (Jacutin®) (n = 5) führten in je 25% der Fälle zu negativem Parasitennachweis, Kortison und Antibiotika (n = 13) in 15% der Fälle [beste und statistisch sehr signifikante Ergebnisse (α = 1%) für Hg-Salbe und Lindan, t-Test für verbundene Stichproben]. Schlußfolgerung: Vermehrt isolierbar waren bei Demodex-positiven Patienten grampositive und gramnegative Bakterien. Demodex scheint Vermittler einer chronischen Blepharitis zu sein, wir empfehlen daher die Untersuchung von Wimpern auf Demodex bei chronischer Blepharitis. 2%ige Quecksilbersalbe und Lindan (Jacutin®) zeigten sich therapeutisch effizient, erschwerend ist ihre mühsame Anwendung und Toxizität.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 9
    ISSN: 1433-0423
    Keywords: Key words Chagas disease •Trypanosoma cruzi• Romaña's sign • Retinal pigment epithelium ; Schlüsselwörter Chagas-Krankheit •Trypanosoma cruzi• Romaña-Zeichen • Retinales Pigmentepithel
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Fragestellung: Die im Vorjahr präsentierte Pilotstudie, die erstmals eine größere Gruppe von Patienten mit Chagas-Krankheit augenärztlich untersuchte, zeigte, daß bei dieser Parasitose auch Veränderungen am Augenhintergrund in Gestalt von Defekten des retinalen Pigmentepithels zu erwarten sind. Die Fortsetzung dieser Studie soll nun durch ein vergrößertes Patientenkollektiv weitere Hinweise auf die Art und das Ausmaß der Fundusveränderungen geben. Material und Methode: Nach serologischer Bestätigung der Infektion schloß sich eine komplette ophthalmologische Untersuchung mit Beurteilung der vorderen und hinteren Augenabschnitte an. Ergebnisse: Bei den 23 neu untersuchten Patienten war der Fundus in 21 Fällen unauffällig, während 1 Patient Fibrae medullares, 1 weiterer deutliche Pigmentverschiebungen am hinteren Pol zeigte. Zusammen mit der Pilotstudie wurden mittlerweile 102 Patienten mit Chagas-Krankheit untersucht. Bei insgesamt 8 Patienten (7,8 %) lagen Defekte des retinalen Pigmentepithels vor, welche in keinem Fall eine signifikante Visusbeeinträchtigung zur Folge hatten. Schlußfolgerung: Wir können davon ausgehen, daß es sich hierbei um seltene und harmlose postentzündliche oder immunologisch bedingte Veränderungen bei der Amerikanischen Trypanosomiasis handelt.
    Notes: Background: Last year's pilot study, which examined for the first time a representative group of patients with Chagas disease, showed that in this parasitosis changes in the ocular fundus can be expected in the form of defects of the retinal pigment epithelium. Examination of more patients in this study should give further information about the character and extent of the alterations found. Materials and methods: After serological confirmation of the disease, we performed an ophthalmological examination of the anterior and posterior segments. Results: In 21 out of 23 patients the fundus was unobtrusive; 1 patient showed fibrae medullares and 1 patient clear pigment dispersion on the posterior pole. Together with the pilot study, a total of 102 chagasic patients were examined. In 8 patients (7.8 %) defects of the retinal pigment epithelium were found, which did not cause any significant loss of vision. Conclusions: We presume that the described defects are a matter of rare and harmless postinflammatory or immunological changes in the American type of trypanosomiasis.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Der Ophthalmologe 96 (1999), S. 120-121 
    ISSN: 1433-0423
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...