Partial remission in major depression: a two-phase, 12-month prospective study

We conducted an interview-based survey to predict the clinical course of major depressive disorder during a follow-up period of 12 months. Altogether 86 patients were investigated. A SCID I interview for DSM-III-R axis-I diagnosis was conducted at baseline and a SCID II interview for personality disorders at the 6-month follow-up. Beck Depression Inventory scores indicated the level of depression and were compiled at baseline and at 6 and 12 months. A BDI score between 9 and 14 was considered to indicate partial remission, and score of 0-8 indicated remission. At the 6-month assessment 33% of the patients had remission, 20% were in partial remission, and 47% were in the depressive phase. Older age, personality disorder, and alexithymia were associated with poor response at 6 months. At 12 months 37% had remission, 28% were in partial remission, and 35% were still in the depressive phase. Treatment at the early stage should be effective enough to achieve remission. If the response is not satisfactory within 6 months, a renewed search should be conducted for factors hindering recovery. Comorbid personality disorder is the main factor predicting a poor short-term response in major depressive disorder.     

Expression of allergens in E. coli and plants--benefits and drawbacks

Recombinant allergens are quickly becoming the reagents of choice for diagnosis and therapy of type I allergic diseases. Consequently, the different methods for the production of recombinant proteins that are available today are of great interest to allergologists. Without doubt, bacterial expression will continue to play a pivotal role. In addition, plant-based expression systems will be needed to overcome problems inherent in the E. coli systems and to allow the production of glycoallergens or allergens of more complex folding.     

Multifactorial assessment of predictors for prevention of periodontal disease progression

Univariate approaches have identified single factors influencing periodontal disease progression. The aim of this explorative approach was to assess the influence of various predictive factors responsible for the prevention of periodontal disease progression in the same patient sample. Patients with untreated chronic periodontitis underwent subgingival debridement alone or in combination with adjunctive antimicrobial therapy (systemic amoxicillin and metronidazole/7 days plus supragingival CHX irrigation). Supportive periodontal therapy was performed over a 24-month period. As predictors, clinical, microbial, immunological, and genetic parameters were assessed. The primary outcome variable was the percentage of teeth without attachment loss 2 mm over the study period (stability of attachment). At 24 months, multiple regression analysis identified adjunctive antimicrobial therapy for teeth with initially at least one site showing a pocket probing depth of 7 mm and IgG₄ reactivity against a 110-kDa protein of A. actinomycetemcomitans at teeth with initial pocket probing depths 6 mm as main predictors of long-term attachment stability (p<0.05). Other parameters failed to influence treatment outcome. Adjunctive antimicrobial therapy and antibody reactivity may be dominant factors influencing the prevention of attachment loss in patients receiving periodontal therapy.     

Changes in Listing's plane after sustained vertical fusion

PURPOSE: To determine whether prolonged fusion of an imposed vertical disparity leads to a change in the orientation of Listing's plane, even when measured during monocular viewing. METHODS: Four normal subjects (age range, 24-37 years) wore Fresnel prisms of increasing power for 72 hours to produce a final left-over-right disparity (range, 7-11 prism diopters [approximately 3.9 - 6.2 degrees]) that was still fusible. Eye movements were measured binocularly, using three-axis search coils, as subjects fixed on an array of light-emitting diodes (LEDs) arranged on a flat screen, 124 cm away. A regression was used to fit the data points to a plane (Listing's plane) during monocular and binocular viewing. From each planar fit, the horizontal and vertical components of primary position (the direction of gaze that is perpendicular to Listing's plane) were calculated. Baseline data were collected in the unadapted state, either just before or at least 4 days after wearing the prisms. RESULTS: After the period of viewing through the prisms, there was a change in vertical phoria (prism adaptation) ranging from 1.6 to 3.3. There was a significant (P < 0.01) shift of the relative orientation of the vertical component of primary position between the two eyes of 6.3 +/- 1.7 degrees (right eye value minus left eye, up being positive, each measured during monocular viewing). There was no consistent pattern of change in the horizontal component of primary position. CONCLUSIONS: Prolonged fusion of a vertical disparity is associated with a change in the orientation of Listing's plane that persists under monocular viewing. Possible mechanisms include phoria adaptation, the prolonged fusional effort itself, and the residual disparity that must be overcome by sensory mechanisms.     

Motorische und sensorische Antworten bei Fusion vertikaler Disparitäten in verschiedenen Konvergenzstellungen

To study motor and sensory responses in vertical fusion at different angles of horizontal vergence in normal humans. METHODS: The study included 12 normal subjects. A cross (+) extending 3.4 degrees x3.2 degrees was presented dichoptically. Vertical disparity was introduced by changing the vertical position of the cross in front of one eye. The disparity was incremented by 0.08 degrees every 8 s. Distance viewing was tested with 1 degrees of convergence demand, near vision with 6-15 degrees convergence demand. Eye movements were recorded using three-axis search coils. RESULTS: Vertical fusion capability was larger at near vision than at distance in 9 of 12 subjects. For the entire group, total vertical fusion capability (motor plus sensory response) differed between distance (mean 1.68 degrees ) and near (mean 2.39 degrees ). The motor component differed significantly between distance (mean 1.42 degrees ) and near (mean 2.13 degrees ). No difference in the sensory component was seen between distance (mean 0.26 degrees ) and near (mean 0.27 degrees ). CONCLUSIONS: Vertical fusion capability increases with convergence. This increase is mainly due to an increase of the motor response.     

Conservation of L-type Ca2+ current characteristics in endo- and epicardial myocytes from rat left ventricle with pressure-induced hypertrophy

Cardiac hypertrophy alters the regional distribution of action potential duration by affecting the magnitude and kinetics of underlying ionic currents. In the present study, the effect of pressure-induced cardiac hypertrophy on the magnitude and kinetics of the L-type Ca2+ current ( I(CaL)) was investigated in endo- and epicardial myocytes of the rat left ventricular free wall. Cardiac hypertrophy was induced by stenosis of the ascending aorta (AS), which led to a pressure difference between the left ventricular peak pressure and the peripheral systolic blood pressure of 84+/-6 mmHg ( n=5, P<0.0001). Sham-operated animals served as controls ( n=7). I(CaL) was investigated using the whole-cell patch-clamp technique. The magnitude of I(CaL) as well as its inactivation, steady-state activation, steady-state inactivation and recovery from inactivation were similar in endo- and epicardial myocytes of sham-operated rats. In myocytes isolated from AS animals, I(CaL) magnitude was significantly greater than in sham-operated animals (2407+/-127 pA, n=42 versus 1904+/-102 pA, n=33; P<0.01). This difference disappeared, however, when I(CaL) was normalized to cell capacitance. The kinetic properties of I(CaL) were unaffected by AS in both endo- and epicardial myocytes. In conclusion, in pressure-induced cardiac hypertrophy the density and kinetics of I(CaL) are preserved. This suggests that an additional insertion or recruitment of channels normally underlying I(CaL) into the cell membrane compensates for the increased cell size associated with hypertrophy.     

Multiple Occurrences of a 168-Nucleotide Deletion in SARS-CoV-2 ORF8, Unnoticed by Standard Amplicon Sequencing and Variant Calling Pipelines

Genomic surveillance of the SARS-CoV-2 pandemic is crucial and mainly achieved by amplicon sequencing protocols. Overlapping tiled-amplicons are generated to establish contiguous SARS-CoV-2 genome sequences, which enable the precise resolution of infection chains and outbreaks. We investigated a SARS-CoV-2 outbreak in a local hospital and used nanopore sequencing with a modified ARTIC protocol employing 1200 bp long amplicons. We detected a long deletion of 168 nucleotides in the ORF8 gene in 76 samples from the hospital outbreak. This deletion is difficult to identify with the classical amplicon sequencing procedures since it removes two amplicon primer-binding sites. We analyzed public SARS-CoV-2 sequences and sequencing read data from ENA and identified the same deletion in over 100 genomes belonging to different lineages of SARS-CoV-2, pointing to a mutation hotspot or to positive selection. In almost all cases, the deletion was not represented in the virus genome sequence after consensus building. Additionally, further database searches point to other deletions in the ORF8 coding region that have never been reported by the standard data analysis pipelines. These findings and the fact that ORF8 is especially prone to deletions, make a clear case for the urgent necessity of public availability of the raw data for this and other large deletions that might change the physiology of the virus towards endemism.     

A mimotope defined by phage display inhibits IgE binding to the plant panallergen profilin

Birch pollen and mugwort pollen allergies are often associated with hypersensitivity to plant foods. This clinical and serological cross-reactivity is mediated by IgE antibodies reacting with homologous proteins in pollen and food. Cross-reacting homologs of the important birch pollen allergen Bet v 2 (profilin) could be detected in other pollen, fruits, nuts, and vegetables, such as celery tuber. We purified IgG/IgE antibodies from the serum of an exclusively profilin-allergic patient using affinity columns either coupled with protein extracts from mugwort pollen, birch pollen, or celery tuber. Constrained and unconstrained random nonapeptide libraries were pooled and screened with the anti-profilin antibody preparations to define cross-reactive ligands. Specific ligands were enriched by successive panning rounds using the profilin-specific antibodies in series. After the last panning round enriched phage clones were screened with purified profilin-specific antibodies and IgE-binding clones were sequenced. Five out of eight positive clones (62.5 %) displayed the same circular peptide CAISGGYPVC. This peptide was synthesized and examined for its ability to inhibit IgE binding to blotted mugwort pollen, birch pollen, or celery tuber profilin. Inhibition studies showed reduction of IgE binding to profilins in all three protein extracts. As the sequence of the mimotope did not show any homology to the known birch profilin sequence this peptide is considered to mimic a common conformational IgE epitope for these examined profilins.     

Depression and Associated Factors in Coronary Heart Disease

Objective - To investigate whether depression was associated with cardiac status and socio-demographic factors in patients with coronary heart disease (CHD). Methods - The sample consisted of 144 symptomatic patients with CHD. For screening depression the Beck Depression Inventory was administered on the day before elective coronary angiography. Results - Twenty-four per cent of patients had probable depressive disorder, but none of them had been previously identified as suffering from depression, or been treated for depression. Alexithymia and dissatisfaction with life were common in depressed patients. Logistic regression analysis showed that neither the cardiac status nor sociodemographic factors were associated with depression. Conclusion - Depression is a common finding and should be looked for independently of other risk factors in patients with CHD.