scholarly journals Proteome difference among the salivary proteins adsorbed onto metallic orthodontic brackets and hydroxyapatite discs

PLoS ONE ◽  
2021 ◽  
Vol 16 (7) ◽  
pp. e0254909
Author(s):  
Walter Luiz Siqueira ◽  
Maria Pia Canales ◽  
Karla Tonelli Bicalho Crosara ◽  
Lina Maria Marin ◽  
Yizhi Xiao
Keyword(s):  
Photoelectron Spectroscopy ◽  
Protein Identification ◽  
Salivary Protein ◽  
Salivary Proteins ◽  
Study Group ◽  
Atomic Composition ◽  
Whole Saliva ◽  
Mass Spectrometry Technology ◽  
Group A ◽  
Identification And Characterization

The aim of this study was to investigate the atomic composition and the proteome of the salivary proteins adsorbed on the surface of orthodontic metallic bracket. For this, the atomic composition of orthodontic metallic brackets was analyzed with X-ray Photoelectron Spectroscopy (XPS). The acquired bracket pellicle was characterized after brackets were immersed in human whole saliva supernatant for 2 hours at 37°C. Hydroxyapatite (HA) discs were used as a control. Acquired pellicle was harvested from the HA discs (n = 12) and from the metallic brackets (n = 12). Proteomics based on mass spectrometry technology was used for salivary protein identification and characterization. Results showed that most of the proteins adsorbed on the surface of orthodontic metallic brackets and on the HA discs were identified specifically to each group, indicating a small overlapping between the salivary proteins on each study group. A total of 311 proteins present on the HA discs were unique to this group while 253 proteins were unique to metallic brackets, and only 45 proteins were common to the two groups. Even though most proteins were unique to each study group, proteins related to antimicrobial activity, lubrication, and remineralization were present in both groups. These findings demonstrate that the salivary proteins adsorbed on the bracket surface are dependent on the material molecular composition.

Resisting Boys, Resisting Teachers

2012 ◽  
Vol 6 (1) ◽  
pp. 34-54
Author(s):  
Miriam B. Raider-Roth ◽  
Marta Albert ◽  
Ingrid Bircann-Barkey ◽  
Eric Gidseg ◽  
Terry Murray
Keyword(s):  
Action Research ◽  
School Culture ◽  
Sense Of Self ◽  
Study Group ◽  
Care Giving ◽  
Cultural Mandate ◽  
Group A

How do teachers build an understanding of their relationships with the boys they teach? This article examines an inherent complexity in the teacher-boy relationship that is rooted in a fundamental relational tension: genuine learning requires the development and nurturing of trustworthy relationships, yet many boys are faced with a cultural mandate of separation from relationships, especially care-giving ones such as parents and teachers. One area in which boys’ negotiation of this paradox is visible is in the examination of some boys’ resistances to their teachers, the curriculum of school, and school culture. Through an action research qualitative, relational methodology, this article examines teachers’ understandings of this paradox. Participants were members of a Teaching Boys Study Group, a forum of teachers dedicated to studying teaching, gender and relationship. Findings of this study reveal that when participating teachers confronted boys’ resistances in school, they were engaging a critical intersection of their teaching identities, culture and relationship. Specifically, they confronted a relational paradox that challenged their sense of self as teacher and connections with the boys they taught.

Biochemical and Paraclinical Evaluation of Organ Damage in Arterial Hypertension with Associated Chronic Kidney Disease

2020 ◽  
Vol 71 (6) ◽  
pp. 194-204
Author(s):  
Teim Baaj ◽  
Ahmed Abu-Awwad ◽  
Mircea Botoca ◽  
Octavian Marius Cretu ◽  
Elena Ardeleanu ◽  
...  
Keyword(s):  
Chronic Kidney Disease ◽  
Cardiovascular Risk ◽  
Kidney Disease ◽  
Ventricular Hypertrophy ◽  
Ankle Brachial Index ◽  
Intima Media Thickness ◽  
Organ Damage ◽  
Left Ventricular ◽  
Study Group ◽  
Group A

Organ damages, which contribute to the overall cardiovascular risk of hypertensive patients, should be early detected, prevented and treated. The study evaluated organ damage in a hypertensive study group with chronic kidney disease (CKD), compared with a study group of hypertension without CKD. Albuminuria was present in 41.2% and reduced estimated glomerular filtration rate [60 ml/min/m2 was present in 72.5% of hypertensive with CKD. The comparison of organ damage revealed in the CKD group a statistical significant higher prevalence of organ damage as follows: intima-media thickness ]0.9 mm in 39.9% vs 10.5%, carotid plaques in 28.2% vs 12.6%, left ventricular hypertrophy in 39.9% vs 31%, ankle brachial index in 6.2% vs 3.5%. Early detection and treatment of additional cardiovascular risk factors as dyslipidaemia and hyperglycaemia, that have significant role in the pathogenesis of organ damage, contribute to the better prevention of cardiovascular and renal complications in hypertension with CKD.

scholarly journals Early impact of the COVID-19 pandemic and social restrictions on ambulance missions

2021 ◽  
Author(s):  
Lauri Laukkanen ◽  
Sanna Lahtinen ◽  
Janne Liisanantti ◽  
Timo Kaakinen ◽  
Ari Ehrola ◽  
...  
Keyword(s):  
Early Phase ◽  
Health Care Services ◽  
Mental Health Problems ◽  
Significant Decline ◽  
Control Group ◽  
Study Group ◽  
Time Intervals ◽  
Care Services ◽  
Group A ◽  
New Strategies

Abstract Background The SARS-CoV-2 coronavirus disease (COVID-19) has had a major impact on health care services globally. Recent studies report that emergency departments have experienced a significant decline in the number of admitted patients in the early phase of the pandemic. To date, research regarding the influence of COVID-19 on emergency medical services (EMS) is limited. The present study investigates a change in the number and characteristics of EMS missions in the early phase of the pandemic. Methods All EMS missions in the Northern Ostrobothnia region, Finland (population 295 500) between 1 March to 30 June 2020 were screened and analyzed as the study group. A control group was composed from the EMS calls between the corresponding months in the years 2016–2019. Results A total of 74 576 EMS missions were screened for the study. Within the first two months after the first COVID-19 cases in the study area, the decline in the number of EMS missions was 5.7% – 13% compared to the control group average. EMS time intervals (emergency call to dispatch, dispatch, en-route, on-scene and hospital handover) prolonged in the COVID-19 period. Dispatches concerning mental health problems increased most in the study period (+1.2%, p < 0.001). Only eleven confirmed COVID-19 infections were encountered by EMS in the study period. Conclusion Our findings suggest that the present COVID-19 pandemic and social restrictions lead to changes in the EMS usage. These preliminary findings emphasize the importance of developing new strategies and protocols in response to the oncoming pandemic waves.

scholarly journals Evaluating the Effectiveness of Childbirth Preparation Courses on Women’s Self-Efficacy among Ultra-Orthodox Jewish Religious Women in Israel

Healthcare ◽  
2021 ◽  
Vol 9 (7) ◽  
pp. 818
Author(s):  
Liat Korn ◽  
Gideon Koren ◽  
Ayelet Yaakov ◽  
Galit Madar ◽  
Ayala Blau
Keyword(s):  
Self Efficacy ◽  
Course Delivery ◽  
Orthodox Jewish ◽  
Control Group ◽  
Study Group ◽  
Jewish Women ◽  
Religious Women ◽  
Birth Preparation ◽  
Group A ◽  
Childbirth Preparation

Background: This study examined the effectiveness of a birth preparation course on coping with childbirth among primigravid ultra-orthodox Jewish women in Israel. Methods: In total, 130 ultra-orthodox 25–35-week primigravid women were divided into a study (n = 100, participated in birth preparation courses) and a control (n = 30, did not participate in the courses) group. A questionnaire was delivered three times: T1—before the course/delivery, T2—two–three days after delivery, and T3—a month after delivery. Results: At T3, self-efficacy among the study group was higher than in the control group. Differences in self-efficacy were found over time regardless of the group (F(2,246) = 12.83, p < 0.001), as a time–group interaction effect (F(2,246) = 10.20, p < 0.01). Self-efficacy in the study group (Mean, M = 3.40, Standard deviation, SD = 0.63 at T1) dropped to M = 3.06, SD = 0.76 at T2 and rose to M = 3.34, SD = 0.64 at T3. In the control group, self-efficacy (M = 3.53, SD = 0.56 at T1) dropped to M = 3.26, SD = 0.63 at T2 and to M = 2.95, SD = 0.76 at T3. Discussion: The childbirth preparation course was found to be effective in raising self-efficacy among primigravid ultra-orthodox religious women when compared to the control group.

Does laryngopharyngeal reflux affect healing and recovery after tonsillectomy?

2007 ◽  
Vol 122 (6) ◽  
pp. 603-608 ◽  
Author(s):  
S Elwany ◽  
Y A Nour ◽  
E A Magdy
Keyword(s):  
Wound Healing ◽  
Laryngopharyngeal Reflux ◽  
Ph Monitoring ◽  
Control Group ◽  
Study Group ◽  
Pain Scores ◽  
Blinded Study ◽  
Group A ◽  
Group B ◽  
Control Group Group

AbstractIntroduction:Laryngopharyngeal reflux is increasingly being implicated in several otolaryngological disorders.Aims:To study a potential correlation between pre-operative laryngopharyngeal reflux and wound healing and recovery after tonsillectomy, based on subjective and objective findings.Materials and methods:A prospective, blinded study was undertaken, including 60 patients scheduled for tonsillectomy, divided into two equal groups: a study group (group A) with pre-operative laryngopharyngeal reflux documented using ambulatory 24-hour pH monitoring; and a control group (group B) without laryngopharyngeal reflux.Results:Group A had significantly higher pain scores on the seventh and 14th post-operative days (p = 0.022 and p = 0.000, respectively) and took a significantly longer time to return to normal eating (p = 0.013), compared with group B. Group A also showed significantly slower healing on the seventh and 14th post-operative days, as estimated by assessing the grade of post-operative slough formation (p = 0.016 and p = 0.029, respectively). A significant correlation between the number of pharyngeal reflux episodes and the degree of post-operative slough was also found.Conclusions:Laryngopharyngeal reflux can significantly decrease wound healing following tonsillectomy. Therefore, pre-operative recognition and management of this condition is desirable in order to eliminate its negative post-operative effect.

Comparison of Post-Operative Quality of Life between Vaginal Hysterectomy and Abdominal Hysterectomy

2021 ◽  
Vol 15 (7) ◽  
pp. 1801-1803
Author(s):  
Nazia Sajjad ◽  
Sara Qadir ◽  
Rukhsana Kasi ◽  
Tayyaba Rasheed ◽  
Fozia Unar ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Vaginal Hysterectomy ◽  
Controlled Trial ◽  
Abdominal Hysterectomy ◽  
Study Group ◽  
Randomized Controlled ◽  
Group A ◽  
Group B ◽  
Satisfactory Quality

Objectives: To compare the frequency of satisfactory quality of life between vaginal hysterectomy and abdominal hysterectomy. Study Design: Randomized controlled trial. Place and Duration of Study: Department of Obstetrics and Gynecology, Niazi Medical & Dental College, Sargodha from 1st April 2020 to 31st December 2020. Methodology: Ninety patients were comprised and they were divided in two groups; group A (vaginal hysterectomy) and Group B (abdominal hysterectomy) were performed. Hysterectomies (vaginal or abdominal) were performed by consultant gynecologist having experience at having least 5 years). Results: Mean age of the patients was 49.82±3.207 years, mean age of the patients of group A was 49.82±3.193 years and mean age of the patients of group B was 49.82±3.256 years. Satisfactory quality of life was noted in 38 (84.44%) patients of study group A and 29 (64.44%) patients of study group B. Statistically significant (P = 0.051) difference between the frequency of satisfactory quality of life between the both groups was noted. Conclusion: Results of this study reveals that post hysterectomy quality of life found more satisfactory in vaginal hysterectomy group as compared to abdominal hysterectomy group. Insignificant association of post hysterectomy quality of life with age group, marital status, parity and socio-economical status was found. Findings of this study also revealed that post hysterectomy satisfactory quality of life is not associated with education of the patients. Key words: Hysterectomy, Quality of life, abdomen, vagina, WHO, Uterus

scholarly journals Comparison of Different Diagnostic Method for Mycobacteria Tuberculosis in Suspected Patients

1970 ◽  
Vol 7 (2) ◽  
pp. 84-88
Author(s):  
AR Khagi ◽  
S Singh ◽  
S Subba ◽  
A Bajracharya ◽  
R Tuladhar ◽  
...  
Keyword(s):  
Comparative Study ◽  
Sputum Smear ◽  
Study Group ◽  
Bacterial Cells ◽  
X Ray ◽  
Smear Examination ◽  
Group A ◽  
Chest X Ray ◽  
Group B ◽  
Sputum Smear Examination

Background: Microbial examination of smear of AFB by Z-N stain is currently the most rapid method for the detection of M. tuberculosis but its sensitivity is low i.e. required at least 10,000 bacterial cells per ml of sputum and also none specific, but auramine staining method has higher sensitivity than that of the Z-N stain but there are chances of false positive. Objective of this study was to find the correlation between chest X-ray, direct sputum smear examination by Ziehl-Neelsen stain, Auramine fluorochrome stain and sputum culture for M. tuberculosis. Methods: During that study period 250 x 3 samples were taken three each from 250 patients and divided into two groups A and B by performing Auramine fluorochrome stain in all samples . In group A, there were 150 fluorochrome stain positive samples. One each from 150 patient for comparative study of direct sputum smear examination by Ziehl-Neelsen stain, , culture on LJ medium and chest X-ray. Similarly in group B, next 100 fluorochrome stain negative specimens one each from 100 patients were taken for the comparative study of direct sputum smear examination by Ziehl-Neelsen stain, culture and chest X-ray. Results: In the study group A (n=150) all the specimens were positive in Auramine fluorochrome stain and all of them show positive in X-ray but only 134 showed positive in Ziehl-Neelsen stain and 136 showed positive in culture. In the study group B (n=100), all the specimens were negative in Auramine fluorochrome stain and all of them show negative in Ziehl-Neelsen stain but 14 of them were positive in culture and 24 were positive in chest X-ray. Conclusions: The diagnosis of PTB could be made by Auramine fluorochrome microscopy and culture. Key words: auramine fluorochrome stain; culture; mycobacterium tuberculosis; x-ray; ziehl-neelsen. DOI: 10.3126/jnhrc.v7i2.3012 Journal of Nepal Health Research Council Vol.7(2) Apr 2009 84-88

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