scholarly journals 89Factors associated with pneumococcal nasopharyngeal carriage: a systematic review

2021 ◽  
Vol 50 (Supplement_1) ◽  
Author(s):  
Eleanor Neal ◽  
Jocelyn Chan ◽  
Fiona M. Russell ◽  
Cattram. D Nguyen

Abstract Background Pneumococcal disease is a major contributor to global childhood morbidity and mortality. Pneumococcal carriage is a prerequisite for pneumococcal disease. Identifying factors associated with pneumococcal carriage can aid public health intervention programs. It is unknown if risk factors for pneumococcal carriage differ between low, middle, and high-income countries. We present preliminary findings of our systematic review of factors associated with pneumococcal carriage in community settings, in all ages. Methods A systematic search for pneumococcal nasopharyngeal carriage studies, published in English before July 2019. Two researchers independently reviewed studies that described factors associated with pneumococcal nasopharyngeal carriage. Study quality was assessed using the NIH Study Quality Assessment Tools. Results are presented as narrative summaries due to heterogeneity amongst factor definitions. Results Preliminary results are shown. Sixty-seven studies were included. 49% were conducted in high-income countries. Pneumococcal prevalence ranged from 0.3%-97%, 2.6%-89.6%, 14%-73%, 1.6%-82.4% in low-, lower-middle, upper-middle, and high-income classifications. Age, respiratory tract infection symptoms, living with young children, poverty, exposure to smoke, and season were positively associated with pneumococcal carriage in all income classifications. Conclusions Pneumococcal carriage prevalence was highest in low-income classifications. Pneumococcal carriage is associated with similar factors across income classifications. Differences in prevalence of risk factors associated with pneumococcal carriage by income classification may contribute to differences in carriage prevalence by income classifications. Key messages Pneumococcal carriage is considered a prerequisite for pneumococcal disease. Pneumococcal carriage prevalence is highest in low-income countries, however preliminary results suggest risk factors for carriage may be similar across income classifications.

2017 ◽  
Vol 23 (2) ◽  
pp. 131-137 ◽  
Author(s):  
Samantha L Turner ◽  
Rhodri D Johnson ◽  
Alison L Weightman ◽  
Sarah E Rodgers ◽  
Geri Arthur ◽  
...  

Author(s):  
Gabriele Skabeikyte ◽  
Rasa Barkauskiene

Abstract Background Research on personality pathology in adolescence has accelerated during the last decade. Among all of the personality disorders, there is strong support for the validity of borderline personality disorder (BPD) diagnosis in adolescence with comparable stability as seen in adulthood. Researchers have put much effort in the analysis of the developmental pathways and etiology of the disorder and currently are relocating their attention to the identification of the possible risk factors associated with the course of BPD symptoms during adolescence. The risk profile provided in previous systematic reviews did not address the possible development and course of BPD features across time. Having this in mind, the purpose of this systematic review is to identify the factors that are associated with the course of BPD symptoms during adolescence. Methods Electronic databases were systematically searched for prospective longitudinal studies with at least two assessments of BPD as an outcome of the examined risk factors. A total number of 14 articles from the period of almost 40 years were identified as fitting the eligibility criteria. Conclusions Factors associated with the course of BPD symptoms include childhood temperament, comorbid psychopathology, and current interpersonal experiences. The current review adds up to the knowledge base about factors that are associated with the persistence or worsening of BPD symptoms in adolescence, describing the factors congruent to different developmental periods.


2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Shaoyu Zhu ◽  
N Patrik Brodin ◽  
Madhur K Garg ◽  
Patrick A LaSala ◽  
Wolfgang A Tomé

ABSTRACT BACKGROUND Intracranial arteriovenous malformation (AVM) is a congenital lesion that can potentially lead to devastating consequences if not treated. Many institutional cohort studies have reported on the outcomes after radiosurgery and factors associated with successful obliteration in the last few decades. OBJECTIVE To quantitatively assess the dose-response relationship and risk factors associated with AVM obliteration using a systematic review and meta-analysis approach. METHODS Data were extracted from reports published within the last 20 yr. The dose-response fit for obliteration as a function of marginal dose was performed using inverse-variance weighting. Risk factors for AVM obliteration were assessed by combining odds ratios from individual studies using inverse-variance weighting. RESULTS The logistic model fit showed a clear association between higher marginal dose and higher rates of obliteration. There appeared to be a difference in the steepness in dose-response when comparing studies with patients treated using Gamma Knife radiosurgery (Elekta), compared to linear accelerators (LINACs), and when stratifying studies based on the size of treated AVMs. In the risk-factor analysis, AVM obliteration rate decreases with larger AVM volume or AVM diameter, higher AVM score or Spetzler-Martin (SM) grade, and prior embolization, and increases with compact AVM nidus. No statistically significant associations were found between obliteration rate and age, sex, prior hemorrhage, prior aneurysm, and location eloquence. CONCLUSION A marginal dose above 18 Gy was generally associated with AVM obliteration rates greater than 60%, although lesion size, AVM score, SM grade, prior embolization, and nidus compactness all have significant impact on AVM obliteration rate.


Oral Diseases ◽  
2021 ◽  
Author(s):  
Amanda de Farias Gabriel ◽  
Felipe Martins Silveira ◽  
Marina Curra ◽  
Lauren Frenzel Schuch ◽  
Vivian Petersen Wagner ◽  
...  

2021 ◽  
Vol 80 (Suppl 1) ◽  
pp. 607.2-608
Author(s):  
S. Giambalvo ◽  
C. Garaffoni ◽  
E. Silvagni ◽  
F. Furini ◽  
M. Govoni ◽  
...  

Background:Fertility is thought to be not reduced in women affected by systemic lupus erythematosus (SLE), however disease-related factors, psychosocial effects of chronic disease as well as medication exposure might impair gonadal function.Objectives:The aim of this systematic review was to explore clinical, hormonal, serological, instrumental and management factors associated with fertility outcomes in women of childbearing age with SLE.Methods:This systematic review was conducted following the Preferred Reporting Items for systematic reviews and Meta-analysis (PRISMA) statement. All articles available in English, published from 1972 to 15th August 2020 in Pubmed, EMBASE, Scopus and Cochrane Library. Study selection and data collection were performed by two independent reviewers. All data were extracted using a standardized template. Risk of bias of the included studies was assessed by using the NIH risk-of-bias tool [1].Results:Of 788 abstracts, we included in the review 45 studies of which 1 systematic literature reviews, 16 cross-sectional studies, 15 cohort studies, 12 observational studies and 1 case-series study, with a total of 4656 patients. The mean age was 33.5 ± 5.4 years, while the mean disease duration was 97.4 ± 65.2 months. Figure 1 illustrates the quality of the included studies. Definitions of fertility/premature ovarian failure (POF) adopted in the studies varied in terms of the number of months of amenorrhea considered. Most studies did not use a hormonally based definition of fertility. Clinical factors associated with the development of POF were older age at the time initiation of therapy and older age at the onset of SLE disease. Cyclophosphamide exposure (CYC) and its cumulative dose influenced gonadal function in SLE women, leading to amenorrhoea and ovarian failure, as reported in 19 studies. Mycophenolate, azathioprine, calcineurin inhibitors and steroids seem to be associated with a lower risk of ovarian failure compared to CYC. 3 studies demonstrated that POF was more frequent in patients treated with CYC not receiving gonadotropin-releasing hormone analogues (GnRH) in comparison to those co-treated with GnRH. 11 studies evaluated the impact of damage and disease activity on ovarian reserve in patients with SLE with conflicting evidence. Finally, 18 studies investigated exposure to hormonal and serological factors able to influence fertility outcomes; among others nor Anti-Müllerian Hormone, neither anti-corpus luteum antibodies were associated with POF.Conclusion:The role of disease activity on fertility in SLE patients is contradictory. Regarding management factors associated with fertility in SLE women of childbearing age, the strongest evidence is about the treatment with CYC and its cumulative dose. Hormonal and serological factors did not impact on fertility outcome but might be used as a surrogate of fertility, especially after treatment with disease-specific drugs.References:[1]Study Quality Assessment Tools NIH. https://www.nhlbi.nih.gov/health-topics/study-quality-assessment-tools.[2]Andreoli L. et al. EULAR recommendations for women’s health and the management of family planning, assisted reproduction, pregnancy and menopause in patients with systemic lupus erythematosus and/or antiphospholipid syndrome. Ann Rheum Dis. 2017; 76: 476–485.Disclosure of Interests:None declared


Author(s):  
George Koulaouzidis ◽  
Amanda E. Yung ◽  
Diana E. Yung ◽  
Karolina Skonieczna-Żydecka ◽  
Wojciech Marlicz ◽  
...  

2009 ◽  
Vol 75 (4) ◽  
pp. 593-615 ◽  
Author(s):  
Ana Paula Corona ◽  
Jacqueline Carneiro Oliveira ◽  
Fàbia Pinheiro Andrade de Souza ◽  
Liane Viana Santana ◽  
Marco Antônio Vasconcelos Rêgo

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