scholarly journals Update on Chlamydia trachomatis Vaccinology

2017 ◽  
Vol 24 (4) ◽  
Author(s):  
Luis M. de la Maza ◽  
Guangming Zhong ◽  
Robert C. Brunham

ABSTRACT Attempts to produce a vaccine to protect against Chlamydia trachomatis-induced trachoma were initiated more than 100 years ago and continued for several decades. Using whole organisms, protective responses were obtained. However, upon exposure to C. trachomatis, disease exacerbation developed in some immunized individuals, precluding the implementation of the vaccine. Evidence of the role of C. trachomatis as a sexually transmitted pathogen started to emerge in the 1960s, and it soon became evident that it can cause acute infections and long-term sequelae in women, men, and newborns. The main focus of this minireview is to summarize recent findings and discuss formulations, including antigens, adjuvants, routes, and delivery systems for immunization, primarily explored in the female mouse model, with the goal of implementing a vaccine against C. trachomatis genital infections.

2004 ◽  
pp. 406-412
Author(s):  
Paul Okunieff ◽  
Michael C. Schell ◽  
Russell Ruo ◽  
E. Ronald Hale ◽  
Walter G. O'Dell ◽  
...  

✓ The role of radiosurgery in the treatment of patients with advanced-stage metastatic disease is currently under debate. Previous randomized studies have not consistently supported the use of radiosurgery to treat patients with numbers of brain metastases. In negative-results studies, however, intracranial tumor control was high but extracranial disease progressed; thus, patient survival was not greatly affected, although neurocognitive function was generally maintained until death. Because the future promises improved systemic (extracranial) therapy, the successful control of brain disease is that much more crucial. Thus, for selected patients with multiple metastases to the brain who remain in good neurological condition, aggressive lesion-targeting radiosurgery should be very useful. Although a major limitation to success of this therapy is the lack of control of extracranial disease in most patients, it is clear that well-designed, aggressive treatment substantially decreases the progression of brain metastases and also improves neurocognitive survival. The authors present the management and a methodology for rational treatment of a patient with breast cancer who has harbored 24 brain metastases during a 3-year period.


2019 ◽  
Vol 28 (3) ◽  
pp. 290-303
Author(s):  
Marta Mori ◽  
Ronan McDermott ◽  
Saut Sagala ◽  
Yasmina Wulandari

Purpose The purpose of this paper is to explore how culture, including traditions and social structures, can influence resilience and how culturally sensitive relief operations can put affected people and their context at the core of any interventions. Design/methodology/approach A case study of the Mt Sinabung volcano area in Indonesia was undertaken. As part of the case study, an analysis of interventions was conducted, which was complemented by semi-structured interviews with Karo cultural experts and humanitarian organisations. Findings Culture influences the manner in which the Karo people react to volcano eruptions with varying implications for recovery. In addition, relief organisations which understand people’s actions through a cultural lens have better managed to tailor programs with long-term impact, thereby avoiding aid dependency. Practical implications Practical examples of disaster management activities that adequately account for the beneficiaries’ way of living prior to the eruptions are provided. Aid actors are provided with guidance concerning how to better tailor their activities in line with a cultural lens. Originality/value The study provides empirical grounding for claims concerning the role of culture in planning interventions in Indonesia and other similar contexts.


2010 ◽  
Vol 63 (1-2) ◽  
pp. 47-50
Author(s):  
Sonja Vesic ◽  
Jelica Vukicevic ◽  
Eleonora Gvozdenovic ◽  
Dusan Skiljevic ◽  
Slobodanka Janosevic ◽  
...  

Introduction. Nongonococcal urethritis is the most common sexually transmitted infection in men, with vast majority of the etiological agents such as Chlamydia trachomatis, followed by urogenital mycoplasmas. The aim of this study was to determine the prevalence of Chlamydia trachomatis, Ureaplasma urealyticum and Mycoplasma hominis in nongonococcal urethritis in men, and to examine infections associated with these agents. Material and methods. 299 sexually active, heterosexual men with nongonococcal urethritis were included into the study. Urethral samples were taken with a dacron swab placed into the urethra up to 2-3 cm. The Direct immunojluorescence tehnique was performed for identification of Chlamydia trachomatis. Ureaplasma urealyticum and Mycoplasma hominis were detected with Mycoplasma 1ST assay. Results. Chlamydia trachomatis was detected in 22.75%, Uraeplasma urealyticum in 21.08% and Mycoplasma hominis in 8.02% cases. We found no significant differences in prevalence between Chlamydia trachomatis and Ureaplasma urealyticym (p>0.05). Monoinjections were found in 51.85% with significantly higher rate (p<0.01) than associated infections (11.70%). Among associated infections, coinfection of Chlamydia trahomatis and Ureaplasma urealyticum was predominant. Association of Chlamydia trachomatis with urogenital mycoplasmas was significantly higher (p<0.05) than the one between Ureaplasma urealyticum and Mycoplasma hominis. In 36.45% patients no patogenic microorganisms were detected. Conclusion. These results confirmed the etiological role of Chlamydia trachomatis and urogenital mycoplasmas in nongonococcal urethritis with prevalence of 51.85% in monoinfections and 11.70% in associated infections. In 36.45% of cases the etiology of urethritis was not elucidated. These results suggest that more sensitive diagnostic tool should be applied when searching for the detailed etiology of nongonococcal urethritis.


2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Omer Unsal

Purpose This paper aims to investigate how firms’ relationships with employees define their debt maturity. The authors empirically test the role of employee litigations in influencing firms’ choice of short-term versus long-term debt. The authors study employee relations by analyzing the importance of the workplace environment on capital structure. Design/methodology/approach The author’s test hypotheses using a sample of US publicly traded firms between 2000 and 2017, including 3,056 unique firms with 4,256 unique chief executive officer, adopting the fixed effect panel model. Findings The authors document that employee litigations have a significant negative effect on the use of short-term debt and a significant positive affect on long-term debt. Employee litigations, along with legal fees, outcomes and charging parties, matter the most in explaining debt maturity. In addition, frequently sued firms abandon the short-term debt market and use less shareholders’ equity to finance their operations while relying more on the longer debt market. Originality/value To the best of the authors’ knowledge, this is the first study to examine the role of employee mistreatment in debt maturity choice. The study extends the lawsuit and finance literature by examining unique, hand-collected data sets of employee lawsuits, allegations, violations, settlements, charging parties, case outcomes and case durations.


2019 ◽  
Vol 11 (3) ◽  
pp. 460-470 ◽  
Author(s):  
Xiwen Chen

Purpose Bottlenecked by rural underdevelopment, China’s overall development is bound to be inadequate and unbalanced. Through a brief retrospect of the reform directed against the “equalitarianism (egalitarianism)” in China’s rural areas, as well as the Chinese Government’s conceptual transformation and systemic construction and improvement thereof, the purpose of this paper is to clarify the panoramic significance of rural reform; the necessity, priority, and long-term nature of the current rural development; and the important role of public policy in doing so. It also looks ahead to consider the prospects for future rural reform. Design/methodology/approach This paper first reviews the rural reforms that were carried out in 1978. Second, it introduces the government’s conceptual change regarding rural reform and the establishment and improvement of the system that underlies it. Finally, the future of rural reform is envisaged. Findings The initial rural reforms brought extensive and profound changes to China’s rural areas. The experience of rural reform has been referred to and escalated by other fields of study. Hence, rural reforms have become something of global significance. Moreover, since the government can undertake reforms well beyond the reach of farmers, its views must be modified in a timely manner, and only then may it reasonably construct and improve the system pertaining to the “three rural issues (agriculture, rural areas, and farmers).” Originality/value This paper reviews the rural reforms carried out in 1978. It introduces the government’s change of concept with respect to rural reforms and the establishment and improvement of the system based on the “three rural issues,” thus looking forward to the future of rural reforms. The findings of this paper are of significance to the formulation of future agricultural policies.


2014 ◽  
Vol 6 (1) ◽  
pp. 64-77 ◽  
Author(s):  
Felix Rioja ◽  
Fernando Rios-Avila ◽  
Neven Valev

Purpose – While the literature studying the effect of banking crises on real output growth rates has found short-lived effects, recent work has focused on the level effects showing that banking crises can reduce output below its trend for several years. This paper aims to investigate the effect of banking crises on investment finding a prolonged negative effect. Design/methodology/approach – The authors test to see whether investment declines after a banking crisis and, if it does, for how long and by how much. The paper uses data for 148 countries from 1963 to 2007. Econometrically, the authors test how banking crises episodes affect investment in future years after controlling for other potential determinants. Findings – The authors find that the investment to GDP ratio is on average about 1.7 percent lower for about eight years following a banking crisis. These results are robust after controlling for credit availability, institutional characteristics, and a host of other factors. Furthermore, the authors find that the size and duration of this adverse effect on investment varies according to the level of financial development of a country. The largest and longer-lasting decrease in investment is found in countries in a middle region of financial development, where finance plays its most important role according to theory. Originality/value – The authors contribute by finding that banking crisis can have long-term effects on investment of up to nine years. Further, the authors contribute by finding that the level of development of the country's financial markets affects the duration of this decrease in investment.


2015 ◽  
Vol 25 (6) ◽  
pp. 744-776 ◽  
Author(s):  
Apostolos Giovanis ◽  
Pinelopi Athanasopoulou ◽  
Evangelos Tsoukatos

Purpose – The purpose of this paper is to extend the well-established nomological network of service quality-relationship quality-customer loyalty by introducing service fairness – a distinct service evaluation concept. Specifically, the study aims to investigate the impact of service fairness on relationship quality as a complementary to service quality driver, and the direct and indirect effect of service fairness on customer loyalty in the presence of service quality and relationship quality in a no failure/recovery effort service context. Design/methodology/approach – A telephone survey of a random sample of 408 customers of auto repair and maintenance services was implemented using a structured questionnaire with established scales. Data were analyzed with partial least squares path methodology, a structural equation modeling methodology. Findings – Interactional fairness is the most important formative determinant of customers’ overall fairness perception, followed by procedural and distributive fairness. Relationship quality measured as a higher order construct, made of satisfaction; trust; affective and calculative commitment, is the main determinant of customer loyalty. Also, it partially mediates, along with service quality, the relationship between service fairness and customer loyalty and fully mediates the effect of service quality on customer loyalty. Finally, service fairness has the highest overall effect on customer loyalty. Research limitations/implications – The sample is industry-specific and this may affect generalizability of findings. Also, the cross-sectional design adopted does not reflect temporal changes. Practical implications – Interactional fairness is of utmost importance to customers of the investigated industry. So, customers should be fairly treated at every point of contact. Also, service quality is heavily affected by service fairness. Thus, fair service leads to high-perceived service quality. Third, service quality affects customer loyalty only through relationship quality. Only when service quality is coupled by long-term quality relationships, signs of customer loyalty appear. Finally, service fairness influences customer loyalty mainly through service and relationship quality and has the highest overall effect on customer loyalty. So, fairly treating customers is crucial for developing long-term relationships that lead to customer loyalty. Originality/value – The role of service fairness in the service quality-relationship quality-customer loyalty chain is investigated and using a higher order construct for relationship quality.


2018 ◽  
Vol 36 (6) ◽  
pp. 578-584 ◽  
Author(s):  
Nick French ◽  
Geetha Bhat ◽  
Gurpreet Matharu ◽  
Filipe Ortigão Guimarães ◽  
David Solomon

Purpose The purpose of this paper is to provide an insight into how the demographic of international and home students in the major university cities in three European countries (France, Spain and Germany) offers investors an opportunity to provide students housing. This paper looks at how a mobile and demanding student clientele now demands, well priced, good quality and purpose built accommodation during their studies at University. This offers a good property investment opportunity. Design/methodology/approach This practice briefing is an overview of the demand factors that are creating opportunities in France, Spain and Germany. Findings This paper analyses the link between the under provision of purpose built student housing and an opportunity to develop a long-term cash flow producing investment asset. Practical implications The role of the property developers and investors is to successfully identify trends and demands and provide the assets that meet the market requirements. This paper looks at the meeting point in three major European countries for this latent and, currently, poorly served demand. Originality/value This provides guidance on how investment opportunities develop in non-traditional property markets.


2011 ◽  
Vol 2 (1) ◽  
pp. 14 ◽  
Author(s):  
Tommaso Cai ◽  
Sandra Mazzoli ◽  
Nicola Mondaini ◽  
Gianni Malossini ◽  
Riccardo Bartoletti

<p>The role of <em>Chlamydia trachomatis</em> (Ct) in everyday clinical practice is now on the increase because Ct infections are the most prevalent sexually transmitted bacterial infections worldwide. Ct can cause urethritis, cervicitis, pharyngitis, or epididymitis, although asymptomatic infections are quite common. Ct infection remains asymptomatic in approximately 50% of infected men and 70% of infected women, with risk for reproductive tract sequelae both in women and men. A proper early diagnosis and treatment is essential in order to prevent persistent consequences. An accurate comprehension of the pathology, diagnosis and treatment of this entity is essential for the urologist. We review the literature about the new findings in diagnosis and treatment of Ct infection in sexually active young men.</p>


1978 ◽  
Vol 48 (2) ◽  
pp. 193-196 ◽  
Author(s):  
Stanislaw K. Toczek ◽  
David C. McCullough ◽  
John S. Boggs

✓ Three patients with spastic neurogenic bladder underwent sacral root stimulation and appropriate section of motor rootlets to the detrusor at the level of the conus medullaris. Compared to the results obtained with rhizotomies at the sacral levels in a previous series of patients, urinary frequency and infection were inhibited for longer periods of time, but some uninhibited bladder activity recurred in all three patients. Analysis of anatomical and electrophysiological data serves to emphasize the complexity and asymmetry of efferent supply to detrusor muscle. The authors conclude that the role of selective rhizotomy for inhibition of the spastic bladder is inconclusive, and perhaps a combination of surgery and medications that inhibit smooth-muscle contraction may be required for long-term protection of urinary collection systems.


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