scholarly journals Keratinized Gingiva Determines a Homeostatic Behavior of Gingival Sulcus through Transudation of Gingival Crevice Fluid

2011 ◽  
Vol 2011 ◽  
pp. 1-6 ◽  
Author(s):  
Maria Luiza P. Lagos ◽  
Adriana Campos Passanezi Sant'Ana ◽  
Sebastião Luiz Aguiar Greghi ◽  
Euloir Passanezi
Keyword(s):  
Tissue Fluid ◽  
Gingival Margin ◽  
Before And After ◽  
Group 2 ◽  
Shed Light ◽  
Group 1

Objective. To shed light on the role of KG, its influence on periodontal behavior was investigated.Methods. Tissue fluid transudation was assessed in alveolar mucosa (P1A), outer gingival margin (P1B), at entrance of (P2) and within gingival sulcus (P3), before and after chewing of fibrous food in 16 patients portraying ≥2 mm KG at one tooth (group 1), and <2 mm at another homologous tooth (group 2).Results. There was a significant increase in GCF after chewing at P1B and P3 in group 1 and at P1A in group 2 (t-test, ).Conclusions. The results suggest that KG plays a role in marginal periodontal homeostasis.

Abstract 741: Atrial Fibrillation Begets Atrial Fibrillation: Acute Autonomic Remodeling Leads to Enhanced Inducibility for Atrial Fibrillation

Circulation ◽  
2007 ◽  
Vol 116 (suppl_16) ◽  
Author(s):  
Zhibing Lu ◽  
Benjamin J Scherlag ◽  
Guo-Dong Niu ◽  
Jiaxiong Lin ◽  
Muhammad Ghias ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Pulmonary Veins ◽  
Atrial Pacing ◽  
Time Period ◽  
Before And After ◽  
Rapid Pacing ◽  
Group 2 ◽  
Window Of Vulnerability ◽  
Group 1

Introduction: There have been many forms of remodeling reported to play a role in the concept of “atrial fibrillation (AF) begets atrial fibrillation.” The role of intrinsic cardiac nervous system (ICNS) in this remodeling process was evaluated in this study. Methods: Continuous rapid pacing (1200 bpm, 2× threshold, TH) was performed at the left atrial appendage to maintain AF. Group 1 (N=7): 6-hours of pacing followed by ganglionated plexi (GP) ablation, both left and right side; Group 2 (N=7): GP ablation followed by 6-hours of pacing. At 2x and 10x TH, the effective refractory period (ERP) and window of vulnerability (WOV), i.e., longest-shortest coupling of premature stimulus which induced AF in milliseconds (ms), were measured at the left atrium, right atrium and pulmonary veins (PVs) every hour during the 6-hours of pacing before and after GP ablation. Results: In group 1 (rapid pacing with GP intact) ERP progressively shortened in the first two hours and then stabilized both at 2×TH and 10×TH (Figure 1A ), however, WOV progressively widened throughout the time period (Figure 1B ). After GP ablation, ERP was significantly longer than prior to ablation and AF could not be induced (WOV=0, p<0.01) at any pacing site at either 2×TH or 10×TH (Figure 1B ). In group 2 (initial GP ablation), ERP exhibited a slightly increasing trend as the pacing time increased. AF could not be induced in 6/7 dogs during the 6-hour pacing, and was inducible in 1/7 with a cumulative WOV of only 10 ms. Conclusion: The ICNS is crucial for the process of “AF begets AF” in the acute stages of remodeling by rapid atrial pacing.

scholarly journals A clinical study on role of caroverine in the management of tinnitus

2016 ◽  
Vol 6 (1) ◽  
pp. 176
Author(s):  
Abha Kumari ◽  
Sandeep Kumar
Keyword(s):  
Complete Relief ◽  
Sound Stimulation ◽  
Frequency Matching ◽  
Group I ◽  
Significant Difference ◽  
Before And After ◽  
Group 2 ◽  
Sensory Neural ◽  
Group 1

Background: Tinnitus is a perception of sound in the absence of sound stimulation and it continues to be a significant and costly health problem without a uniformly accepted treatment. The signals between the inner hair cells and the cochlear nerve fibres are most likely to be transmitted by glutamate. Hence, present study was undertaken to assess the role of caroverine which is a glutamate receptor antagonist in the management of sensory neural tinnitus.Methods: The present study was conducted among 50 adult patient with sensory neural tinnitus divided into two groups with 25 patients in each group. In group 1 caroverine 20 mg twice daily for a period of 90 days was administered and in group 2 placebos was given. The effect of caroverine and placebo on subjective relief and objective improvement was evaluated by using THI (Tinnitus Handicap, Inventory) scoring, Tinnitus frequency matching before and after the administration of caroverine and placebo.Results: In Group I reduction in tinnitus was seen in 16 patients (64%) in 90 days. In group II (placebo group) improvement was seen in 20% of the patient. Significant difference with respect to treatment was noted. In group 1, 8% of the patient showed complete relief from the tinnitus. 44% of the patient showed improvement below 50% whereas 12% of the patient showed improvement more than 50%.Conclusions: Carvoverine had shown a statistically significant improvement in tinnitus management. 

Comparison of 24-Hour Electrocardiogram Parameters in Patients with Graves Disease Before and After Anti-Thyroid Therapy

2020 ◽  
Vol 20 ◽  
Author(s):  
Gamze Akkuş ◽  
Yeliz Sökmen ◽  
Mehmet Yılmaz ◽  
Özkan Bekler ◽  
Oğuz Akkuş
Keyword(s):  
Treatment Group ◽  
Medical Treatment ◽  
Surgical Therapy ◽  
Graves Disease ◽  
Before And After ◽  
Euthyroid Status ◽  
Ectopic Beats ◽  
Group 2 ◽  
Electrocardiographic Parameters ◽  
Group 1

Background: We aimed prospectively investigate the laboratory and electrocardiographic parameters (hearth rate, QRS, QT, QTc, Tpe, Tpe/QTc, arrhythmia prevalance) in patients with graves disease before and after antithyroid therapy. Methods: 71 patients (48 female, 23 male), age between 18-50 (mean±SD: 36.48±12.20 ) with GD were included into the study. Patients treated with antithyroid therapy (thionamids and/or surgical therapy) to maintain euthyroid status. Patients were examined in terms of electrocardiographic parameters before and after the treatment. Results: Mean TSH, free thyroxin (fT4) and tri-iodothyrionine (fT3) levels of all patients were 0.005±0.21, 3.27± 1.81, 11.42±7.44, respectively. While 9 patients (group 2) underwent surgical therapy, had suspicious of malignant nodule or large goiter and unresponsiveness to medical treatment; the other patients (n=62, group 1) were treated with medical therapy. Patients with surgical therapy had more increased serum fT4 (p=0.045), anti-thyroglobulin value (p=0.018) and more severe graves orbitopathy (n=0.051) before treatment when compared to medical therapy group. Baseline Tpe duration and baseline Tpe/QTc ratio and frequency of supraventricular ectopic beats were found to be significantly higher in group 2 when compared to group 1 (p=0.00, p=0.005). Otherwise baseline mean heart rate, QRS duration, QTc values of both groups were similar. Although the patients became their euthyroid status, group 2 patients had still suffered from more sustained supraventricular ectopics beats than group 1. Conclusion: Distinct from medical treatment group, surgical treatment group with euthyroidism at least 3 months had still suffered from an arrhythmia (Tpe, Tpe/QTc, supraventricular and ventricular ectopic beats).

scholarly journals The role of inhibition of osteocyte apoptosis in mediating orthodontic tooth movement and periodontal remodeling: a pilot study

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Michele Kaplan ◽  
Zana Kalajzic ◽  
Thomas Choi ◽  
Imad Maleeh ◽  
Christopher L. Ricupero ◽  
...  
Keyword(s):  
Bone Density ◽  
Alveolar Bone ◽  
Tooth Movement ◽  
Orthodontic Tooth Movement ◽  
Tartrate Resistant Acid Phosphatase ◽  
Osteocyte Apoptosis ◽  
Saline Administration ◽  
Group 2 ◽  
Group 1

Abstract Background Orthodontic tooth movement (OTM) has been shown to induce osteocyte apoptosis in alveolar bone shortly after force application. However, how osteocyte apoptosis affects orthodontic tooth movement is unknown. The goal of this study was to assess the effect of inhibition of osteocyte apoptosis on osteoclastogenesis, changes in the alveolar bone density, and the magnitude of OTM using a bisphosphonate analog (IG9402), a drug that affects osteocyte and osteoblast apoptosis but does not affect osteoclasts. Material and methods Two sets of experiments were performed. Experiment 1 was used to specifically evaluate the effect of IG9402 on osteocyte apoptosis in the alveolar bone during 24 h of OTM. For this experiment, twelve mice were divided into two groups: group 1, saline administration + OTM24-h (n=6), and group 2, IG9402 administration + OTM24-h (n=6). The contralateral unloaded sides served as the control. The goal of experiment 2 was to evaluate the role of osteocyte apoptosis on OTM magnitude and osteoclastogenesis 10 days after OTM. Twenty mice were divided into 4 groups: group 1, saline administration without OTM (n=5); group 2, IG9402 administration without OTM (n=5); group 3, saline + OTM10-day (n=6); and group 4, IG9402 + OTM10-day (n=4). For both experiments, tooth movement was achieved using Ultra Light (25g) Sentalloy Closed Coil Springs attached between the first maxillary molar and the central incisor. Linear measurements of tooth movement and alveolar bone density (BVF) were assessed by MicroCT analysis. Cell death (or apoptosis) was assessed by terminal dUTP nick-end labeling (TUNEL) assay, while osteoclast and macrophage formation were assessed by tartrate-resistant acid phosphatase (TRAP) staining and F4/80+ immunostaining. Results We found that IG9402 significantly blocked osteocyte apoptosis in alveolar bone (AB) at 24 h of OTM. At 10 days, IG9402 prevented OTM-induced loss of alveolar bone density and changed the morphology and quality of osteoclasts and macrophages, but did not significantly affect the amount of tooth movement. Conclusion Our study demonstrates that osteocyte apoptosis may play a significant role in osteoclast and macrophage formation during OTM, but does not seem to play a role in the magnitude of orthodontic tooth movement.

P–391 Role of subcutaneous granulocyte colony-stimulating factor infusion in thin endometrium

2021 ◽  
Vol 36 (Supplement_1) ◽  
Author(s):  
K Banerjee ◽  
B Singla
Keyword(s):  
Pregnancy Rate ◽  
Clinical Pregnancy ◽  
P Value ◽  
Granulocyte Colony Stimulating Factor ◽  
Colony Stimulating Factor ◽  
Thin Endometrium ◽  
Group 2 ◽  
Stimulating Factor ◽  
Group 1

Abstract Study question To assess the role of subcutaneous granulocyte colony-stimulating factor (G-CSF) in thin endometrium cases. Summary answer G CSF has beneficial role to improve the endometrium thickness in thin endometrium. What is known already Endometrium is very important for embryo implantation and the endometrial thickness is the marker of receptivity of the endometrium. Study design, size, duration Study design - Retrospective analysis Size - 88 infertile females with thin endometrium (&lt; 7 mm) in the age group of 23 to 40 years Duration - one year. Participants/materials, setting, methods In the group 1 of 44 females, subcutaneous infusion of G CSF (300 mcg/ml) was added along with other supplements and if lining was not more than 7 mm in 72 hours, then second infusion was given. In the group 2 of 44 females, only estradiol valerate and sildenafil were given.The efficacy of G CSF was evaluated by assessing the endometrium thickness before embryo transfer, pregnancy rates and clinical pregnancy rates. Main results and the role of chance There was no difference between the two groups regarding demographic variables, egg reserve, sperm parameters, number of embryos transferred and embryo quality. . The pregnancy rate was 60% (24 out of 40 cases) in the group 1 that was significantly higher than in-group 2 that was 31% (9 out of 29 cases) with p value &lt; 0.0001. The clinical pregnancy rate was also significantly higher in-group 1 (55%) as compared to group 2 (24%) with p value &lt; 0.0001. Limitations, reasons for caution Further larger cohort studies are required to explore the subcutaneous role of G CSF in thin endometrium. Wider implications of the findings: Granulocyte colony-stimulating factor has beneficial role to improve the endometrium thickness in thin endometrium. In most of previous studies, the intrauterine infusion of G CSF was given to improve the uterine lining. This is one of the few studies done that showed subcutaneous role of G CSF in thin endometrium. Trial registration number Not applicable

scholarly journals The role of the new coronavirus infection (COVID-19) in the progression and development of cerebrovascular diseases. A competent choice of pathogenic treatment is the key to success in treatment and prevention. An expert’s view from the ‘red zone’

2021 ◽  
Vol 13 (1) ◽  
pp. 57-66
Author(s):  
V. V. Kovalchuk
Keyword(s):  
Emotional Disorders ◽  
Clinical Manifestations ◽  
Cerebrovascular Diseases ◽  
Recent Experience ◽  
Treatment And Prevention ◽  
State Recovery ◽  
Group 2 ◽  
State Examination ◽  
Group 1

COVID-19 worsens the course of cerebrovascular diseases (CVD), including chronic cerebral ischaemia (CCI). The Actovegin drug, which has long been widely used in CCI treatment, has an antioxidant and endothelium protective effect. It makes sense to study the effect of Actovegin therapy on the clinical manifestations of CCI in patients with a recent experience of COVID-19.Objective: to evaluate Actovegin efficacy in the treatment of CCI in patients with a recent experience of COVID-19.Patients and methods. The study included 440 patients (234 female; 206 male) with a recent experience of COVID-19, suffering from CCI, their average age being 67.8 years (from 54 to 85 years). All patients were broken down into two groups of 220 people (the patients in Group 1 were administrated Actovegin, the ones in Group 2 – were not). All patients were followed up for 90 days; their condition was assessed by the severity of clinical manifestations of CCI, using special scales and questionnaires.Results and discussion. After 90 days of follow-up, the frequency of complaints of cognitive impairment, sleep disorder, dizziness, fatigue, emotional disorders, and headache in Group 1 was significantly lower than in Group 2 (p<0.05). According to Mini-Mental State Examination (MMSE), the Montreal Cognitive Assessment (MoCA), Multidimensional Fatigue Inventory (MFI-20), and Spiegel Sleep Questionnaire (SSQ), the average indicators improved significantly more in Group 1 than in Group 2 (p<0.05). The absence of quality of life impairment and their minimal severity were observed in Group 1 in 77.9%; in Group 2 – in 33.7% (p<0.001). Statistically significant differences between the groups of patients were also observed in relation to emotional state recovery according to the Wakefield Questionnaire and the Spielberger State Trait Anxiety inventory.Conclusion. The observational study demonstrated the efficacy of Actovegin in the treatment of main clinical manifestations of CCI in patients with recent COVID-19 experience.

scholarly journals Adaptive functional change of the contralateral kidney after partial nephrectomy

2017 ◽  
Vol 313 (2) ◽  
pp. F192-F198 ◽  
Author(s):  
Se Young Choi ◽  
Sangjun Yoo ◽  
Dalsan You ◽  
In Gab Jeong ◽  
Cheryn Song ◽  
...  
Keyword(s):  
Renal Function ◽  
Partial Nephrectomy ◽  
Functional Change ◽  
Functional Changes ◽  
Contralateral Kidney ◽  
Before And After ◽  
Group 2 ◽  
American Society ◽  
American Society Of Anesthesiologists ◽  
Group 1

Partial nephrectomy aims to maintain renal function by nephron sparing; however, functional changes in the contralateral kidney remain unknown. We evaluate the functional change in the contralateral kidney using a diethylene triamine penta-acetic acid (DTPA) renal scan and determine factors predicting contralateral kidney function after partial nephrectomy. A total of 699 patients underwent partial nephrectomy, with a DTPA scan before and after surgery to assess the separate function of each kidney. Patients were divided into three groups according to initial contralateral glomerular filtration rate (GFR; group 1: <30 ml·min−1·1.73 m−2, group 2: 30–45 ml·min−1·1.73 m−2, and group 3: ≥45 ml·min−1·1.73 m−2). Multiple-regression analysis was used to identify the factors associated with increased GFR of the contralateral kidney over a 4-yr postoperative period. Patients in group 1 had a higher mean age and hypertension history, worse American Society of Anesthesiologists score, and larger tumor size than in the other two groups. The ipsilateral GFR changes at 4 yr after partial nephrectomy were −18.9, −3.6, and 3.9% in groups 1, 2, and 3, respectively, whereas the contralateral GFR changes were 10.8, 25.7, and 38.8%. Age [β: −0.105, 95% confidence interval (CI): −0.213; −0.011, P < 0.05] and preoperative contralateral GFR (β: −0.256, 95% CI: −0.332; −0.050, P < 0.01) were significant predictive factors for increased GFR of the contralateral kidney after 4 yr. The contralateral kidney compensated for the functional loss of the ipsilateral kidney. The increase of GFR in contralateral kidney is more prominent in younger patients with decreased contralateral renal function.

A cross-sectional research conducted in Malatya province, Turkey: Knowledge levels and awareness about rational antibiotic use and antimicrobial resistance before and after graduation

2019 ◽  
Author(s):  
ADEM KOSE
Keyword(s):  
Antimicrobial Resistance ◽  
Family Physicians ◽  
Antibiotic Use ◽  
Theoretical Knowledge ◽  
Cross Sectional ◽  
Before And After ◽  
Group 2 ◽  
Senior Students ◽  
Rational Antibiotic Use ◽  
Group 1

Abstract Background Irrational antibiotic use can adversely affect treatment outcomes or even lead to increased antimicrobial resistance. We aimed to determine antimicrobial prescribing habits and to evaluate the level of theoretical knowledge of rational antibiotic use and awareness about antimicrobial resistance among the senior students of medical faculty and the family physicians in Malatya province in Turkey. Methods This study was cross-sectional research and was carried out between dates of 01 February-30 April 2019, in Malatya province. Power analysis was calculated as minimum 240 participants when considering a proportion difference of 0.18 between the groups, a type I error of 0.05 and a type II error of 0.20. A total 225 senior students in Inonu University Medical Faculty (Group 1) and 230 actively-working family physicians in Malatya primary healthcare services who were found eligible (Group 2) were included in to this study. A questionnaire form was prepared including seven sections and thirty questions. All of the participants were interviewed face to face. Before the questions, the purpose of the study and the contents of the questions were explained to participants. Qualitative data were analyzed by Pearson chi-square test. A p<0.05 value was considered to be statistically significant. Results The group 1 had a tendency to apply to specialist physician when starting to themselves antibiotic treatment, they were more cautious when making antibiotic decision, and their theoretical knowledge level was better. They argued that penal sanctions could be more effective by developing strict use policies to raise awareness of resistance to antibiotics. The group 2 had higher self-confidence and it was also concluded that forgot their theoretical antibiotic knowledge over time and could not follow the novel information because of the intensity of working life. Both groups stated that post-graduation trainings could be used effectively for reducing the antibiotic resistance. Conclusion This study highlighted the need for immediate action of training and corrective actions and might create awareness to determine the difference in theoretical knowledge levels and behavior models of physicians before and after graduation and to reduce higher use rates to lower levels. Key words: Antimicrobial resistance, antibiotic, awareness, rational use

REACTIONS OF DRUG-DEPENDENT ANTIBODIES WITH METABOLITES OF QUININE (Qn) AND QUINIDINE (Qd)

1987 ◽  
Author(s):  
D J Christie ◽  
H Diaz-Arauzo ◽  
J M Cook
Keyword(s):  
Ring Structure ◽  
Quinoline Ring ◽  
Drug Induced ◽  
Group 3 ◽  
Methyl Derivatives ◽  
Drug Dependent ◽  
Group 2 ◽  
Asymmetric Carbon ◽  
Group 1

In many cases of drug-induced immunologic thrombocytopenia (DITP), a metabolite, rather than the native drug, is suspected of provoking the destructive drug-dependent antibodies (DDAB) responsible for this severe hemorrhagic disorder. However, this has not previously been investigated for Qn- and Qd-DDAB. We report evidence that the native drugs, and not their metabolites, are the provocative agents in Qn and Qd DITP. Reactions of Qn- and Qd-DDAB with platelets were studied with the native drugs and four of their metabolites: the N-oxide and 10,11-diol derivatives (quinuclidine ring modifications), the des-methyl derivatives (aromatic quinoline ring modification), and 2'-quininone and 2'-quinidinone (2'-oxo derivatives) (also quinoline ring modifications on Qn and Qd, respectively). Five antibodies were studied:two Group 1 DDAB (specific for compounds with native configuration at asymmetric carbon positions), two Group 2 DDAB (similar to Group 1 DDAB but also known to require the methoxy group on the quinuclidine ring for full activity), and one Group 3 DDAB (reactive with the native drug, its stereoisomer, and several nonmetabolic analogs of both compounds) . Using a complement-dependent 51Cr-lysis assay, the reactions of all DDAB with platelets and the four metabolites were similar to 100-fold weaker when compared to reactions obtained with the native drug, with these exceptions:Group 2 DDAB failed to react with the desmethyl and 2'-oxo metabolites and the Group 3 DDAB failed to react with 2'-oxo Qd. This observation shows that the activity of certain DDAB is critically dependent on the native quinoline ring structure. Importantly, none of the DDAB reacted more strongly with any of the metabolites tested when compared with reactions in the presence of the native drug. These findings indicate that DDAB react with platelets preferentially in the presence of the unaltered Qn and Qd molecules and suggest that, while the role of metabolites cannot be entirely ruled out, the native structure of the drug molecule is sufficient to stimulate production of the antibodies responsible for DITP.

P5392Epicardium derived cells promote sympathetic ganglionic outgrowth towards myocardium in vitro

2019 ◽  
Vol 40 (Supplement_1) ◽  
Author(s):  
Y Ge ◽  
A M Smits ◽  
J C Van Munsteren ◽  
T Van Herwaarden ◽  
A M D Vegh ◽  
...  
Keyword(s):  
Neurite Outgrowth ◽  
Autonomic Innervation ◽  
Cardiac Damage ◽  
Group 4 ◽  
Group 3 ◽  
Cervical Ganglia ◽  
Group 2 ◽  
Group 1

Abstract Background The autonomic nerve system is essential to maintain homeostasis in the body. In the heart, autonomic innervation is important for adjusting the physiology to the continuously changing demands such as stress responses. After cardiac damage, excessive neurite outgrowth, referred to as autonomic hyperinnervation, can occur which is related to ventricular arrhythmias and sudden cardiac death. The cellular basis for this hyperinnervation is as yet unresolved. Here we hypothesize a role for epicardium derived cells (EPDCs) in stimulating sympathetic neurite outgrowth. Purpose To investigate the potential role of adult EPDCs in promoting sympathetic ganglionic outgrowth towards adult myocardium. Method Fetal murine superior cervical ganglia were dissected and co-cultured with activated adult mesenchymal epicardium-derived cells (EPDCs) or/and adult myocardium in a 3D collagen gel culture system. Four experiment groups were included: Group 1: Vehicle cultures (ganglia cultured without EPDC/myocardium) (n=48); Group 2: ganglia co-cultured with EPDCs (n=38); Group 3: ganglia co-cultured with myocardium (n=95); and group 4: ganglia co-cultured with both EPDCs and myocardium (n=96). The occurrence of neurite outgrowth was assessed in each group. The density of neurites that showed directional sprouting (i.e. sprouting towards myocardium) was assessed as well with a semi-automatic quantification method. Finally, sub-analyses were made by taking gender into account. Results Cervical ganglia cultured with EPDCs alone (group 2) showed increased neurite outgrowth compared to vehicle cultures (group 1), however the neurites did not show directional sprouting towards EPDCs. When co-cultured with myocardium (group 3), directional neurite outgrowth towards myocardium was observed. Compared to the ganglia-myocardium co-cultures, directional outgrowth was significantly increased in co-cultures combining myocardium and EPDCs (group 4), and the neurite density was also significantly augmented. Comparison between males and female ganglia demonstrated that more neurite outgrowth occurred in female-derived ganglia than in male-derived ganglia under the same co-culture conditions. Conclusion Activated adult EPDCs promote sympathetic ganglionic outgrowth in vitro. Sex differences exist in the response of ganglia to EPDCs, and female-derived ganglia appear more sensitive to EPDC-signalling. Results support a role of EPDCs in cardiac autonomic innervation and open avenues for exploring of their role in ventricular hyperinnervation after cardiac damage.

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