Analgesic efficacy of selective tibial nerve block versus partial local infiltration analgesia for posterior pain after total knee arthroplasty: a randomized, controlled, triple-blinded trial.

BACKGROUND: The adductor canal block provides pain relief on the anterior aspect of the knee after arthroplasty. Pain on the posterior aspect may be treated either by partial local infiltration analgesia of the posterior capsule or by a tibial nerve block. This randomized, controlled, triple-blinded trial tests the hypothesis that a tibial nerve block would provide superior analgesia compared to posterior capsule infiltration in patients scheduled for total knee arthroplasty under spinal anesthesia with an adductor canal block. METHODS: Sixty patients were randomized to receive either infiltration of the posterior capsule by the surgeon with ropivacaine 0.2%, 25 mL, or a tibial nerve block with 10 mL of ropivacaine 0.5%. Sham injections were performed to guarantee proper blinding. The primary outcome was intravenous morphine consumption at 24 h. Secondary outcomes included intravenous morphine consumption, pain scores at rest and on movement, and different functional outcomes, measured at up to 48 h. When necessary, longitudinal analyses were performed with a mixed-effects linear model. RESULTS: The median (interquartile range) of cumulative intravenous morphine consumption at 24 h was 12 mg (4-16) and 8 mg (2-14) in patients having the infiltration or the tibial nerve block respectively (p = 0.20). Our longitudinal model showed a significant interaction between group and time in favor of the tibial nerve block (p = 0.015). No significant differences were present between groups in the other above-mentioned secondary outcomes. CONCLUSION: A tibial nerve block does not provide superior analgesia when compared to infiltration. However, a tibial nerve block might be associated with a slower increase in morphine consumption over time.

An unusual presentation of giant cell arteritis.

A 77-year-old-man with giant cell arteritis who developed bitemporal scalp ulcerations is described. Since 1946 when Cooke et al. reported the first case of scalp necrosis there were approximately 55 cases published. Scalp ulceration is a rare complication of giant cell arteritis and occurs mainly in elderly persons, particularly women. About half of all patients were presented to dermatologists. Most of the patients (70%) had other serious complications of giant cell arteritis: blindness, gangrene of the tongue and nasal septum necrosis. Seventy percent of the cases were confirmed by a temporal artery biopsy. The necrosis were of varying extent and uni- or bilateral. Although, in most cases necrosis has been located bilaterally as in the presented case. Scalp healing was complete nearly in all patients by conservative treatment within a year. Scalp ulceration is a potentially reversible complication of giant cell arteritis which indicates extensive vessel involvement and adequate coricosteroid therapy is required and essential.

Ceguera secundaria a neuropatía óptica isquémica por una disección carotídea espontánea. Caso clínico / Blindness caused by an ischemic optic neuropathy by spontaneous carotid dissection. Report of a case

In young and middle age subjects, spontaneous carotid dissection is an increasingly recognized cause of ischemic stroke. Their usual presentation is facial pain with a Horner syndrome and a contra lateral paresis. Blindness has been reported as a presenting symptom in only a few cases. We report a 50 years old man who presented with amblyopia in the left eye, without periocular pain. Fundoscopy showed papilledema and a peripapillar hemorrhage, compatible with an ischemic optic neuropathy. A magnetic resonance angiography confirmed a left carotid dissection.

Leukotriene receptor antagonists--a novel therapeutic approach in atopic dermatitis?

Cysteinyl leukotrienes have been shown to be important in the pathogenesis of both asthma and rhinitis. Improvement of skin manifestations in atopic dermatitis has been reported with leukotriene receptor antagonists. This article reviews current data on the experimental evidence and clinical efficacy of leukotriene receptor antagonists in the treatment of atopic dermatitis.

Soluble E-selectin correlates with disease activity in cyclosporin A-treated patients with atopic dermatitis.

BACKGROUND: The expression of adhesion molecules on endothelial cells regulates leukocyte migration. The level of soluble adhesion molecules which are shed into the circulation is known to reflect the degree of inflammation, and this level can therefore be used as an indicator of disease activity. The objective of this study was first to investigate the relationship between sE-selectin levels and disease activity parameters (scores of extent, severity, itch, and sleep) in atopic dermatitis (AD) patients, and second to determine the effect of therapy with an immunosuppressive drug (cyclosporin A) on sE-selectin levels. METHODS: Fourteen patients with severe AD and 41 healthy controls were studied. sE-selectin was measured by ELISA both 2 weeks before therapy with cyclosporin A and after 16 weeks of treatment. RESULTS: At baseline, the level of sE-selectin was significantly higher in patients with AD than in healthy control subjects (P<0.0001). After treatment of AD with cyclosporin A, there was a significant reduction of the sE-selectin levels (P<0.0001). In addition, changes in sE-selectin levels significantly correlated with changes in disease activity parameters such as severity (P<0.002) and extent of disease (P<0.049). CONCLUSIONS: Soluble E-selectin is a new serologic marker in AD which reflects disease activity. Therefore, soluble E-selectin may be a useful parameter in the monitoring of this disease.

Comparison of two formulations of cyclosporin A in the treatment of severe atopic dermatitis. Aa double-blind, single-centre, cross-over pilot study.

BACKGROUND: Cyclosporin A (CsA) has been shown to be highly effective in the therapy of atopic dermatitis (AD). However, little information exists on the treatment of AD patients with Sandimmun Neoral(R) (Neoral), a microemulsion of CsA with improved pharmacokinetic properties in comparison to Sandimmun(R). OBJECTIVE: We have compared the efficacy and tolerability of Sandimmun and Neoral. METHODS: In a randomised, monocentric, double-blind, cross-over pilot study (n = 14), each formulation was administered for 8 weeks, followed by switching to the other treatment group for another 8 weeks. RESULTS: After 2 weeks of therapy, the improvement under Neoral therapy was significantly higher than with Sandimmun (disease activity p = 0.047; extent of disease p = 0.016). In contrast, after 8 weeks of therapy, both formulations yielded similar improvement in the patients' condition. CONCLUSION: While both formulations are effective and well tolerated in the treatment of severe AD, Neoral may have a faster onset of action and higher initial efficacy, which makes it an adequate replacement for Sandimmun.

[Specific immunotherapy--past--present--future]. / Spezifische Immunotherapie-damals-heute-morgen.

Specific immunotherapy or hyposensitization has been used extensively for almost 90 years as a specific treatment of IgE-mediated allergic diseases. In hayfever and allergic asthma due to house-dust mites and animal danders (especially cat) immunotherapy is highly effective and used worldwide. The term "local immunotherapy" stands for topical administration of specific IT in allergic disorders and includes local nasal, bronchial, oral and sublingual immunotherapy. Today bronchial and oral IT can not yet be recommended for clinical practice. Local nasal IT may be indicated in carefully selected adult patients with rhinitis caused by grass- and Parietaria-pollen allergy. Sublingual (swallow) IT with pollen (Grass/Parietaria) and mite extracts can be recommended in adult patients with allergic rhinitis.

[Therapeutic management of neurodermatitis atopica]. / Therapeutisches Management der Neurodermitis atopica.

The therapy of atopic dermatitis remains a challenge. The success of any therapeutic concept is based on a broad and early diagnostic approach which allows to rule out relevant provocation factors and allergens. During remission periods the regular use of a topical basic therapy consisting of drug-free emolients is recommended. Topical corticosteroids as well as systemic or local antimicrobial therapy and antihistamines are essential during periods of acute exacerbations. Although during the last years a great number of new therapeutic approaches have been published, data of most of these therapeutic modalities are not sufficient to allow an unrestricted use in all patients with atopic dermatitis.

Anaphylactic reactions to ingested carmine (E120).

We report five cases of anaphylactic reaction to carmine (cochineal, E120) after patients drank an alcoholic beverage. By means of positive skin prick tests (SPT) and positive RAST to carmine. IgE-mediated sensitization could be established. One nonatopic patient showed also a great amount of serum IgE antibodies to the carmine acid-albumin conjugate. Due to its widespread use in the food and cosmetic industry, carmine should be tested in the allergy work-up in case of allergic reactions after a drink or a meal.

[Visceral and neurological complications in Varicella infections of adults]. / Viszerale und neurologische Komplikationen bei Varizellen-infektionen des Erwachsenen.

Primary varicella-zoster virus (VZV) infections in adults generally follow a more severe course than in children and are more often associated with life-threatening complications. In the years 1992 to 1995 we observed 7 immunocompetent adults with a severe course of primary VZV infection. All 7 patients presented initially with a characteristic rash. In 6 patients the diagnosis of VZV was confirmed by ELISA on material taken from the lesions, and in all of them it was confirmed by serology. The following complications were observed: pneumonia (5x), elevated liver enzymes (4x), myocarditis (1x), encephalitis (1x) and myelitis (1x). Pulmonary lesions were characterized by bilateral interstitial infiltrates on chest-x-ray and required mechanical ventilation in 2 patients. The liver enzymes were only slightly elevated and clinically not significant. Myocarditis in one case was postulated in view of elevated creatine kinase levels, ECG-repolarization changes and AV-block III which required the insertion of a transitory pacemaker. Encephalitis presented as abnormal behaviour at work followed by seizures. Myelitis was suspected due to ascending sensory motor tetraparesis and confirmed by MRI. All patients were treated with high doses of parenteral acyclovir (3 x 10 mg/kg body weight i.v. per day) for 5-12 days. 6 patients recovered completely and only the patient with myelitis has residual neurological deficits 3 months after discharge. Although we cannot exclude the possibility that supportive therapy without acyclovir would have had the same outcome, we recommend high-dose parenteral acyclovir for treatment of visceral and neurological complications in primary VZV infections in adults.

[Poppyseed anaphylaxis]. / Mohnsamenanaphylaxie.

We describe 3 patients with a severe allergic immediate-type reaction to poppy-seeds, diagnosed from clinical findings, skin tests and specific IgE antibodies (CAP). All show a serologic positivity to sesame seed, possibly due to a cross reactivity to similar allergens. From 1978 until 1987 402 food allergy patients seen at the Allergy Unit, Department of Dermatology, University Hospital Zurich, Switzerland, included no case of allergy to poppy-seeds. Because of today's trend to vegetarian food such immediate type reactions can be expected to occur more frequently.

Levels of soluble ICAM-1 in atopic dermatitis. A new marker for monitoring the clinical activity?

Levels of soluble intercellular adhesion molecule-1 (sICAM-1) were measured in sera from patients with an acute exacerbation of their atopic dermatitis (AD) (n = 16) on admission to and discharge from our department of dermatology. At admission, the sICAM-1 levels in sera from patients with AD were slightly higher than those of the blood donors (n = 100) and dropped at discharge significantly (P = 0.014) after improvement of the skin conditions. Therefore, sICAM-1 may be, together with soluble interleukin-2 receptor (sIL-2), eosinophilic cationic protein (ECP), and CD14, another marker for monitoring AD.

Human monoclonal or polyclonal antibodies recognize predominantly discontinuous epitopes on bee venom phospholipase A2.

BACKGROUND: Two hybridomas, which secrete human monoclonal antibodies of IgG4 isotype specific for the main bee venom antigen/allergen phospholipase A2, were generated. The antigenic determinants recognized by these antibodies were mapped and compared with the binding sites of murine monoclonal and human polyclonal antibodies raised against the same antigen. METHODS: Two hybridomas were developed by fusing heteromyelomas to Epstein-Barr virus immortalized B cells obtained from beekeepers. The cloned hybridomas were stable and secreted up to 40 mg/L of antibody into the culture supernatant. Phospholipase A2 specificity of the human monoclonal antibodies was confirmed by binding and inhibition ELISA and by Western blot analysis. Epitope mapping on phospholipase A2 was done with the PEPSCAN method and ELISA techniques. RESULTS: The epitopes recognized by the human monoclonal antibodies were shown to be discontinuous and did not contain the sugar residue. Similar results were obtained with polyclonal antibodies of IgG4 isotype (from beekeepers) specific for phospholipase A2, which could also inhibit the binding of the human monoclonal antibodies to phospholipase A2. In contrast, antigen binding of the human monoclonal antibodies could not be inhibited by murine monoclonal antibodies against bee venom phospholipase A2. CONCLUSIONS: The data indicate that the human monoclonal antibodies obtained are representative of a part of the polyclonal immune response to phospholipase A2 from beekeepers and may allow a more precise analysis of the humoral immune response to phospholipase A2 that is associated with protection.