scholarly journals Different Visual Weighting due to Fast or Slow Vestibular Deafferentation: Before and after Schwannoma Surgery

2019 ◽  
Vol 2019 ◽  
pp. 1-11 ◽  
Author(s):  
Fredrik Tjernström ◽  
Per-Anders Fransson ◽  
Babar Kahlon ◽  
Mikael Karlberg ◽  
Sven Lindberg ◽  
...  
Keyword(s):  
Postural Control ◽  
Spatial Orientation ◽  
Visual Cues ◽  
Time Course ◽  
Vestibular Function ◽  
Sensory Systems ◽  
Vestibular Loss ◽  
Group 3 ◽  
Group 2 ◽  
Group 1

Background. Feedback postural control depends upon information from somatosensation, vision, and the vestibular system that are weighted depending on their relative importance within the central nervous system. Following loss of any sensory component, the weighting changes, e.g., when suffering a vestibular loss, the most common notion is that patients become more dependent on visual cues for maintaining postural control. Dizziness and disequilibrium are common after surgery in schwannoma patients, which could be due to interpretation of the remaining sensory systems involved in feedback-dependent postural control and spatial orientation. Objective. To compare visual dependency in spatial orientation and postural control in patients suffering from unilateral vestibular loss within different time frames. Methods. Patients scheduled for schwannoma surgery: group 1 (n=27) with no vestibular function prior to surgery (lost through years), group 2 (n=12) with remaining vestibular function at the time of surgery (fast deafferentation), and group 3 (n=18) with remaining function that was lost through gentamicin installations in the middle ear (slow deafferentation). All patients performed vibratory posturography and rod and frame investigation before surgery and 6 months after surgery. Results. Postural control improved after surgery in patients that suffered a slow deafferentation (groups 1 and 3) (p<0.001). Patients that suffered fast loss of remaining vestibular function (group 2) became less visual field dependent after surgery (p≤0.035) and were less able to maintain stability compared with group 1 (p=0.010) and group 3 (p=0.010). Conclusions. The nature and time course of vestibular deafferentation influence the weighting of remaining sensory systems in order to maintain postural control and spatial orientation.

Influence of Acupuncture and Pharmacotherapy on Sensitivity of Sensory Systems to Alcohol Irritants in Patients with Alcoholism

1996 ◽  
Vol 24 (02) ◽  
pp. 177-184 ◽  
Author(s):  
M. F. Timofeev
Keyword(s):  
Acupuncture Therapy ◽  
Treatment Efficacy ◽  
Acupuncture Treatment ◽  
Sensory System ◽  
Sensory Systems ◽  
Treatment Results ◽  
Group 4 ◽  
Group 3 ◽  
Group 2 ◽  
Group 1

The sensitivity of an alcoholic's sensory systems (55) to alcohol therapy is a good indication of treatment efficacy in this disease. In this study, we compare pharmacotherapy (PHT) and acupuncture therapy (AP) on the sensitivity of visual (VL), acoustic (AC), olfactory (OL) and taste (TS) systems to alcohol irritants (AI). The results showed that PHT changed the threshold sensitivity of 55 to AI but did not cause aversion of SS to AI. In acupuncture treatment, results can be divided into four groups: Group 1, no aversion of AC was produced to AI; Group 2, no aversion of TS and OL were produced to AI; Group 3, no aversiori ofVL to AI; and group 4, no aversion was recorded to AI. Supposedly, one of the sensory of information, and other SS are subordinates. Therefore, before acupuncture treatment for alcoholism, to the leading sensory system of the patient.

scholarly journals Immediate and mid-term effects of elastic taping on gymnast’s postural control performance during a handstand

2015 ◽  
Vol 7 (4) ◽  
pp. 73-84
Author(s):  
PIA M. VINKEN ◽  
THOMAS HEINEN
Keyword(s):  
Postural Control ◽  
Center Of Pressure ◽  
Sensory Stimulation ◽  
Control Performance ◽  
Forearm Muscles ◽  
Group 3 ◽  
Group 2 ◽  
Wrist Joints ◽  
Group 1

Background: The study explored whether three different applications of an elastic tape on the forearms of healthy, active gymnasts influence their postural control performance during a handstand immediately and 48 hours after application. Material/Methods: 24 gymnasts were randomly assigned to three groups: group 1 – elastic tape application at a gymnast’s wrist joints, group 2 – elastic tape application at a gymnast’s forearm muscles, and group 3 – a combination of groups 1 and 2. The gymnast’s center of pressure was measured with a mobile balance platform, indicating postural control performance during a handstand. Results: The gymnast’s postural control performance during a handstand is affected depending on the elastic tape application and the time span the application is in situ. Elastic tape application on a gymnast’s wrist joints reveals a performance increase immediately and 48 hours after application. Elastic tape application on a gymnast’s forearm muscles increases performance when applied for 48 hours. Combined elastic tape application does not additionally affect gymnast’s postural control performance. Conclusions: Elastic tape applications can increase postural control performance during a handstand. Furthermore, it is supposed that mechano-sensory stimulation, improved attention and awareness due to elastic tape application and the belief in its effectiveness may be moderating mechanisms of this effect.

Proteinases secreted by Fasciola hepatica: time course of the inhibitory effect of serum from experimentally infected rabbits demonstrated by gelatin-substrate polyacrylamide gel electrophoresis

1997 ◽  
Vol 71 (4) ◽  
pp. 333-338 ◽  
Author(s):  
L. Piacenza ◽  
D. Acosta ◽  
A. Dowd ◽  
S. McGonicle ◽  
J. Dalton ◽  
...  
Keyword(s):  
Gel Electrophoresis ◽  
Neutralizing Antibodies ◽  
Time Course ◽  
Fasciola Hepatica ◽  
Polyacrylamide Gel Electrophoresis ◽  
Polyacrylamide Gel ◽  
Group 4 ◽  
Group 3 ◽  
Group 2 ◽  
Group 1

AbstractFasciola hepatica secretes proteolytic enzymes to aid it to penetrate and migrate through the host tissues. Two of these proteinases have been purified and shown to be cathepsin L-like, and are termed, CL1 (27.5 kD) and CL2 (29 kD). The immunogenicity of these proteinases was investigated over the course of an experimental infection and following drug treatment. Four groups of rabbits were studied: group 1: orally infected with 50 metacercariae; group 2: infected and treated 8 weeks after infection; group 3: infected, treated at week 8 and reinfected at week 13 and group 4: non-infected control group. Sera were collected weekly from each group until week 20 postinfection. CL1 and CL2 were incubated with the different sera and then analysed by gelatin substrate polyacrylamide gel electrophoresis (GS-PAGE). Analysis of groups 1, 2 and 3 showed that CL1 and CL2 neutralizing antibodies appear at week 5 post-infection. In group 1, these remained throughout the 20 weeks of infection. In group 2, neutralizing antibodies disappeared at week 13, that is, 5 weeks after anti-Fasciola treatment. In group 3, CL1 and CL2 neutralizing antibodies disappeared at week 13 but reappeared by week 15, that is 2 weeks after reinfection. Pooled sera from group 4, showed no inhibitory capacity. ELISA results using CL1 and CL2 as antigen, correlate very well with the inhibitiory time course observed by GS-PAGE. These results suggest that purified cathepsin Ls are antigenic molecules recognized early in the infective process and capable of inducing a specific humoral response, strong enough to neutralize, at least partially, their enzymatic activity.

scholarly journals The Presence of p53 Influences the Expression of Multiple Human Cytomegalovirus Genes at Early Times Postinfection

2009 ◽  
Vol 83 (9) ◽  
pp. 4316-4325 ◽  
Author(s):  
Holger Hannemann ◽  
Kyle Rosenke ◽  
John M. O'Dowd ◽  
Elizabeth A. Fortunato
Keyword(s):  
Gene Expression ◽  
Human Cytomegalovirus ◽  
Time Course ◽  
Viral Gene Expression ◽  
Fibroblast Cell ◽  
Viral Gene ◽  
Group 3 ◽  
Group 2 ◽  
Microarray Analyses ◽  
Group 1

ABSTRACT Human cytomegalovirus (HCMV) is a common cause of morbidity and mortality in immunocompromised and immunosuppressed individuals. During infection, HCMV is known to employ host transcription factors to facilitate viral gene expression. To further understand the previously observed delay in viral replication and protein expression in p53 knockout cells, we conducted microarray analyses of p53+/+ and p53−/− immortalized fibroblast cell lines. At a multiplicity of infection (MOI) of 1 at 24 h postinfection (p.i.), the expression of 22 viral genes was affected by the absence of p53. Eleven of these 22 genes (group 1) were examined by real-time reverse transcriptase, or quantitative, PCR (q-PCR). Additionally, five genes previously determined to have p53 bound to their nearest p53-responsive elements (group 2) and three control genes without p53 binding sites in their upstream sequences (group 3) were also examined. At an MOI of 1, >3-fold regulation was found for five group 1 genes. The expression of group 2 and 3 genes was not changed. At an MOI of 5, all genes from group 1 and four of five genes from group 2 were found to be regulated. The expression of control genes from group 3 remained unchanged. A q-PCR time course of four genes revealed that p53 influences viral gene expression most at immediate-early and early times p.i., suggesting a mechanism for the reduced and delayed production of virions in p53−/− cells.

scholarly journals CT appearance in the 330 patients with COronaVIrus disease 2019 (COVID-19) in Serbia

2020 ◽  
pp. 125-125
Author(s):  
Tijana Kosanovic ◽  
Miroslav Misovic ◽  
Vladimir Djukic ◽  
Miodrag Lalosevic ◽  
Marjana Djordjevic ◽  
...  
Keyword(s):  
Symptom Onset ◽  
Time Course ◽  
Ct Scans ◽  
Time Interval ◽  
Imaging Features ◽  
Ct Findings ◽  
Group 3 ◽  
Group 2 ◽  
Onset Group ◽  
Group 1

Background/Aim. The COronaVIrus Disease 2019 (COVID-19) primarily affects the respiratory system, so radiological diagnosis has been shown to be necessary. Chest computed tomography (CT) is to be shown the best modality in suspected COVID-19 cases for initial evaluation because CT findings may be present before the onset of symptoms. The purpose of this study is to show different CT imaging features or patterns in COVID-19 patients with a different time course and disease severity. Methods. This is a prospective cohort study that analysed 330 patients (the average age was 52.37?15.36) with confirmed COVID-19 via laboratory testing. During hospitalization, all patients included in the study underwent chest CT in order to assess the extent of changes in their lungs. Because chest CT images could show different imaging features or patterns in COVID-19 patients with a different time course and disease severity, we classified them into four categories: lung, bronchial, pleural and mediastinal changes. Based on the time interval between the onset of symptoms and the CT scan, all patients were divided into three groups: group 1 (CT scans done ?1 week after symptom onset); group 2 (CT scans done >1 to 2 weeks after symptom onset); group 3 (CT scans done >2 weeks after symptom onset). In order to more accurately monitor the distribution of changes in the lungs, bilateral lungs were divided into 12 ?lung? zones. Each zone was assigned a CT score. ?Total severity score? was calculated by summing the scores for each zone. Results. In 93.6% patients with COVID-19 the CT findings were positive. About 92.1% patients had multiple lesions. The lesions were bilateral in 87.6% of patients, had both peripheral and centrally localised lesions in 63.3% of patients, and occurred more frequently in posterior areas (93%), as well as in lower lung zones (91.2%). The average ?Total severity score? was 11.00 (7.00-16.00). The most common CT findings in all patients are the ground- glass opacities (97.7%), reticular pattern (91.3%), consolidation (71.5%) and fibrotic streaks (63.8%). When the time interval is monitored between onset of symptoms and the CT scan, it is noticed that in group 1 changes on CT were found in 80.0% of patients, in group 2 in 95.0%, and in group 3 in 99.4%. Conclusion. CT has proven to be a very important diagnostic method in COVID-19 patients, and together with clinical and laboratory findings, gives a complete picture of the patient's condition and significantly contributes to decision- making for further treatment.

scholarly journals Analysis of the clinical efficiency of eradication therapy in patients with coronary heart disease associated with gastroduodenal pathology

2017 ◽  
Vol 89 (8) ◽  
pp. 37-42 ◽  
Author(s):  
Zh G Simonova ◽  
A K Martusevich ◽  
E I Tarlovskaya
Keyword(s):  
Coronary Heart Disease ◽  
Heart Disease ◽  
Time Course ◽  
Eradication Therapy ◽  
Anginal Attack ◽  
Clinical Efficiency ◽  
Group 3 ◽  
Group 2 ◽  
The Impact ◽  
Group 1

Aim. To comparatively analyze the clinical efficiency of eradiation therapy (ET) in patients with coronary heart disease (CHD) concurrent with gastroduodenal pathology (GDP). Subjects and methods. The study was conducted in three steps. In Step 1, 1588 patients with chronic CHD were examined. In Step 2, the characteristics of the course of CHD concurrent with Helicobacter pylori-associated GDP in 147 patients with these conditions compared to the same number of CHD patients without GDP. In Step 3, the impact of a GDP treatment option on the efficiency of treatment was investigated in the patients with CHD. Group 1 received ET + basic therapy (BT); Group 2 used antisecretory therapy + BT; Group 3 consisted of CHD patients without concomitant GDP who received BT only. The time course of changes in clinical and quality-of-life (QOL) indicators was assessed. Results. The patients with CHD concurrent with GDP have a more severe course of the disease as manifested by deterioration in clinical status and QOL. After ET, anginal attack rates were decreased by 62.6% in Group 1, by 30.7% in Group 2 (during antisecretory therapy), and by 29.5% in Group 3. The level of physical QOL increased by 23.7% in Group 1, which was not observed in Groups 2 and 3. Conclusion. Inclusion of ET in an algorithm for treating CHD patients with GDP promotes the angina stability and normalizes QOL in the patients.

In-vivo evaluation of the effect of cyanoacrylate on prosthetic vascular graft infection – does cyanoacrylate increase the severity of infection?

VASA ◽  
2020 ◽  
Vol 49 (4) ◽  
pp. 281-284
Author(s):  
Atıf Yolgosteren ◽  
Gencehan Kumtepe ◽  
Melda Payaslioglu ◽  
Cuneyt Ozakin
Keyword(s):  
Vascular Graft ◽  
Graft Infection ◽  
Vascular Graft Infection ◽  
Group 4 ◽  
Significant Difference ◽  
Group 3 ◽  
Group 2 ◽  
Prosthetic Vascular Graft Infection ◽  
Group 1

Summary. Background: Prosthetic vascular graft infection (PVGI) is a complication with high mortality. Cyanoacrylate (CA) is an adhesive which has been used in a number of surgical procedures. In this in-vivo study, we aimed to evaluate the relationship between PVGI and CA. Materials and methods: Thirty-two rats were equally divided into four groups. Pouch was formed on back of rats until deep fascia. In group 1, vascular graft with polyethyleneterephthalate (PET) was placed into pouch. In group 2, MRSA strain with a density of 1 ml 0.5 MacFarland was injected into pouch. In group 3, 1 cm 2 vascular graft with PET piece was placed into pouch and MRSA strain with a density of 1 ml 0.5 MacFarland was injected. In group 4, 1 cm 2 vascular graft with PET piece impregnated with N-butyl cyanoacrylate-based adhesive was placed and MRSA strain with a density of 1 ml 0.5 MacFarland was injected. All rats were scarified in 96th hour, culture samples were taken where intervention was performed and were evaluated microbiologically. Bacteria reproducing in each group were numerically evaluated based on colony-forming unit (CFU/ml) and compared by taking their average. Results: MRSA reproduction of 0 CFU/ml in group 1, of 1410 CFU/ml in group 2, of 180 200 CFU/ml in group 3 and of 625 300 CFU/ml in group 4 was present. A statistically significant difference was present between group 1 and group 4 (p < 0.01), between group 2 and group 4 (p < 0.01), between group 3 and group 4 (p < 0.05). In terms of reproduction, no statistically significant difference was found in group 1, group 2, group 3 in themselves. Conclusions: We observed that the rate of infection increased in the cyanoacyrylate group where cyanoacrylate was used. We think that surgeon should be more careful in using CA in vascular surgery.

Abnormal Haemostasis and Blood Viscosity in Malignant Hypertension

1984 ◽  
Vol 52 (03) ◽  
pp. 253-255 ◽  
Author(s):  
C Isles ◽  
G D O Lowe ◽  
B M Rankin ◽  
C D Forbes ◽  
N Lucie ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Blood Viscosity ◽  
Renal Damage ◽  
Antithrombin Iii ◽  
Plasma Viscosity ◽  
Malignant Hypertension ◽  
Fibrin Deposition ◽  
Group 3 ◽  
Group 2 ◽  
Group 1

SummaryWe have previously shown abnormalities of haemostasis suggestive of intravascular coagulation in patients with malignant hypertension, a condition associated with retinopathy and renal fibrin deposition. To determine whether such abnormalities are specific to malignant hypertension, we have measured several haemostatic and haemorheological variables in 18 patients with malignant hypertension (Group 1), 18 matched healthy controls (Group 2), and 18 patients with non-malignant hypertension (Group 3) matched for renal pathology, blood pressure and serum creatinine with Group 1. Both Groups 1 and 3 had increased mean levels of fibrinogen, factor VIIIc, beta-thrombo- globulin, plasma viscosity and blood viscosity (corrected for haematocrit); and decreased mean levels of haematocrit, antithrombin III and platelet count. Mean levels of fast antiplasmin and alpha2-macroglobulin were elevated in Group 1 but not in Group 3. We conclude that most blood abnormalities are not specific to malignant hypertension; are also present in patients with non-malignant hypertension who have similar levels of blood pressure and renal damage; and might result from renal damage as well as promoting further renal damage by enhancing fibrin deposition. However increased levels of fibrinolytic inhibitors in malignant hypertension merit further investigation in relation to removal of renal fibrin.

Features of postoperative period in patients with chronic venous insufficiency: phlebectomy versus thermal ablation

2020 ◽  
pp. 64-75
Author(s):  
E. Burleva ◽  
O. Smirnov ◽  
S. Tyurin
Keyword(s):  
Postoperative Period ◽  
Chronic Venous Insufficiency ◽  
Thermal Ablation ◽  
Venous Insufficiency ◽  
Clinical Symptoms ◽  
Varicose Veins ◽  
Statistical Processing ◽  
Group 3 ◽  
Group 2 ◽  
Group 1

The purpose of the study was to conduct a comparative assessment of the course of the postoperative period after phlebectomy and thermal ablation in patients with varicose veins of the lower extremities in the system of the great saphenous vein (GSV) with class C2 of chronic venous insufficiency (CVI) — CEAP class C2. Materials and methods: 455 patients (455 limbs) with CEAP class C2. Group 1 (n = 154) received stripping + minimally invasive phlebectomy; Group 2 — endovenous laser ablation (EVLA) of GSV trunk + sclerotherapy of varicose veins; 3 group (n = 150) — radiofrequency ablation (RFA) of the GSV + sclerotherapy. All patients were united by a single tactical solution — the elimination of pathological vertical reflux in GSV. In each group, patients were with similar hemodynamic profile were selected (Group 1 = 63; Group 2 = 61; Group 3 = 61). The course of the postoperative period (from 2 days to 2 months) was compared for pain (visual analog scale — VAS), clinical symptoms of chronic venous insufficiency, degree of satisfaction (Darvall questionnaire), and duration of disability. Statistical processing was carried out using Excel programs for Windows XP, MedCalc® (version 11.4.2.0., Mariakerke, Belgium). Results: Postoperative pain is more pronounced (during day 1 for Group 1–4.0, Group 2–3.0, Group 3–2.0) and more prolonged (up to 4 days) after open surgeries (p < 0.05). The dynamics of the clinical symptoms of CVI (including varicose syndrome and use of compression therapy) could not be fully evaluated in connection with the ongoing sclerotherapy procedures for patients of Groups 2 and 3. Satisfaction of patients with aesthetic aspects was higher than expected in all groups. Reliable statistical differences proved decrease in days of disability (Group 1–14; Group 2–4; Group 3–3) and earlier return to physical activities and work in patients after thermal ablation in comparison with phlebectomy. Conclusion: The study shows that all three methods for eliminating vertical reflux in the GSV can be proposed for a large category of patients with CEAP of class C3 and C2. Medical and social rehabilitation of patients using endovascular thermal ablation technologies proceeds faster, which is beneficial both for the patients and for society.

Analysis of the quality of early diagnostics of cardiovascular diseases in students of educational institutions of Khabarovsk (according to the data of preventive examinations)

2020 ◽  
pp. 13-16
Keyword(s):  
Blood Pressure ◽  
Cardiovascular Diseases ◽  
Sinus Tachycardia ◽  
Blood Pressure Level ◽  
Educational Institutions ◽  
Conduction Disturbances ◽  
Group 3 ◽  
Group 2 ◽  
Group 1

To identify the prevalence of early pathology of cardiovascular diseases, a survey of 400 200 girls) in the age group 15 and 17 years old was conducted as a part of routine medical of the level of blood pressure (BP) was carried out, with the calculation of the average level pressure on the basis of three separate measurements estimated by percentile tables for a registration of a standard resting ECG in 12 leads. According to the results of the survey, into 3 groups: with an increase in blood pressure above 95 ‰ (group 1 – 16 people), which recorded in males (p<0,05); Group 2 (67 people) – adolescents with a normal blood pressure level and group 3 of adolescents with a decrease in blood pressure below 5 ‰ changes in the form of rhythm and conduction disturbances were noted in almost every a predominance of sinus tachycardia in the first group. In the third group of adolescents, form of ectopic rhythm and pacemaker migration were significantly more frequently only 78 % of adolescents were referred for consultation and in-depth examination by a pediatric cardiologist.

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