A new nonperipheral zinc(II) phthalocyanine bearing octa carboxylic acid ethyl ester derivative substituted triazole attached propylmercaptothiobenzylmercapto derivative was synthesized via the tetramerization reaction of phthalonitrile. The photochemical in vitro photodynamic activity of zinc(II) phthalocyanine (), such as human nonsmall cell lung carcinoma cell lines, was investigated in this study. The singlet oxygen generation property of novel zinc(II) phthalocyanine () was also examined due to the significantly high singlet oxygen quantum yield of (F = 0.
View Article and Find Full Text PDFObjectives: Malassezia species are common, clinically relevant, and lipid-dependent yeasts of humans. They are also the leading causes of the dandruff problem of humans, and the azoles are used primarily in their topical and systemic treatment. Resistance to azoles is an emerging problem among Malassezia sp.
View Article and Find Full Text PDFCryptococcus species are fungal pathogens that pose a serious threat to human life and can cause meningoencephalitis in immunocompromised and healthy individuals. It was estimated that approximately 112000 people die every year due to cryptococcal-related infections all over the world, especially in immunocompromised individuals. Cryptococcus species can be found in soil, bat dung, pigeon droppings, and various tree species in addition to humans.
View Article and Find Full Text PDFIntroduction: In this study, we aimed to monitor anti-spike and anti-nucleocapsid antibodies positivity in healthcare workers (HCWs) vaccinated with two doses of inactivated CoronaVac (Sinovac, China) vaccine.
Methods: Overall, 242 volunteer HCWs were included. Of the participants, 193 were HCWs without history of prior documented COVID-19 (Group 1), while 49 had history of prior documented COVID-19 before vaccination (Group 2).
Fungal keratitis is a medical emergency that is among the most common causes of blindness in developing countries. The type of the agent may vary depending on the geographical conditions under which the patient lives, trauma exposure, the use of contact lenses and profession. Curvularia spp.
View Article and Find Full Text PDFIntroduction: The full spectrum of bacterial and fungal species in adult asthma and the effect of inhaled corticosteroid use is not well described. The aim was to collect mouthwash and induced sputum samples from newly diagnosed asthma patients in the pretreatment period and in chronic asthma patients while undergoing regular maintenance inhaled corticosteroid therapy, in order to demonstrate the bacterial and fungal microbiome profile.
Methods: The study included 28 asthmatic patients on inhaler steroid therapy, 25 steroid-naive asthmatics, and 24 healthy controls.
The Malassezia yeast species colonize on the skin immediately after birth and could be found on the healthy skin flora for life. Although they are more frequently involved in the etiology of common skin infections in the community, particularly Malassezia furfur could cause life-threatening infections such as fungemia. Detection of biofilm during the colonization of these yeasts on the skin is an important criterion for its virulence.
View Article and Find Full Text PDFIntroduction And Objective: With recent advances in genome sequencing technology, a large body of evidence has accumulated over the last few years linking alterations in microbiota with cardiovascular disease. In this study, we aimed to compare gut microbial composition using 16S ribosomal DNA (rDNA) sequencing techniques in patients with coronary artery disease (CAD) and stable heart failure (HF) with reduced ejection fraction and patients with CAD but with normal ejection fraction. We also studied the relationship between systemic inflammatory markers and microbial richness and diversity.
View Article and Find Full Text PDFBackground: With the Covid-19 pandemic, the use of masks has increased the frequency of 'maskne' cases. Local physiological changes due to the use of mask have caused changes in the presence of yeasts in the environment, such as acne and seborrheic dermatitis.
Objectives: The aim is to compare the differences of species in the maskne region.
Introduction: The reactivation of CMV (Cytomegalovirus) in renal transplant recipients may be manifested across a clinical spectrum from asymptomatic viraemia to organ rejection. The purpose of this study is to evaluate the patients who have experienced CMV infection after renal transplantation in the last twelve years, and to assess the efficacy of valacyclovir.
Methodology: Renal transplant recipients' demographic, clinical and laboratory data were evaluated retrospectively between 2006-2018.
Eur J Clin Microbiol Infect Dis
April 2022
Candidemia may present as severe and life-threatening infections and is associated with a high mortality rate. This study aimed to evaluate the risk factors associated with 30-day mortality in patients with candidemia. A multi-center prospective observational study was conducted in seven university hospitals in six provinces in the western part of Turkey.
View Article and Find Full Text PDFThe pathogenic Cryptococcus neoformans causes life-threatening disease in immunocompromised patients. Although there are hypotheses about the role of lipid droplets in C.neoformans pathogenesis, there is still not extensively data determined on the subject yet.
View Article and Find Full Text PDFIntroduction: Tularemia has reemerged and spread throughout Turkey, and the number of cases has increased. In this study, we report on a waterborne outbreak of tularemia in the spring of 2013 in a region which was previously disease-free, and we investigated the reasons for the outbreak.
Methodology: The index case, a 17-year-old male, was diagnosed with oropharyngeal tularemia.
Methicillin resistant infections are increasing, especially in intensive care units. A new method for photodynamic inactivation (PDI) generates reactive oxygen species by photosensitization to kill bacteria. We investigated the PDI effect of tetraethylene glycol-substituted Zn(II) phthalocyanine (TEG-P) on strains including two standards (ATCC 25923 and ATCC 43400) and 20 clinically isolated methicillin sensitive and 20 methicillin resistance strains.
View Article and Find Full Text PDFBehçet's Syndrome (BS) is a multisystem vasculitis with various clinical manifestations. Pathogenesis is unclear, but studies have shown genetic factors, innate immunity and autoinflammation to have an important role in the disease course. Diversity in the microbial community of gut microbiota may significantly contribute to the activation of the innate immune system.
View Article and Find Full Text PDFOrthohantaviruses infect humans via inhalation of the viral particles in the excreta of infected rodents or direct contact with infected rodents. The infections caused by Puumala orthohantavirus (PUUV) and Dobrava-Belgrade orthohantavirus (DOBV) have been reported in Turkey. Serum samples of 346 healthy volunteers who are in the high-risk group of Orthohantavirus infections among the residents of Çal, Baklan, Çivril, and Bekilli counties, located in the northeast part of Denizli province, were used in this study.
View Article and Find Full Text PDFFront Cell Infect Microbiol
August 2020
species are life-threatening human fungal pathogens that cause cryptococcal meningoencephalitis in both immunocompromised and healthy hosts. The natural environmental niches of include pigeon () guano, soil, and a variety of tree species such as , and spp. Genetic and genomic studies of extensive sample collections have provided insights into the population distribution and composition of different species in geographic regions around the world.
View Article and Find Full Text PDFCryptococcus neoformans is a human pathogenic yeast that causes life-threatening infections especially in immunosuppressed patients. The environmental isolation of C.neoformans from Turkey was reported as early as 2004, although this was mostly from Eucalyptus camaldulensis colonization.
View Article and Find Full Text PDFA total of 476 European isolates (310 Cryptococcus neoformans var. grubii, 150 C. neoformans var.
View Article and Find Full Text PDFCryptococcus neoformans is a basidiomycetous encapsulated yeast that can cause life-threatening infections in immunosuppressed humans and animals. C.neoformans/Cryptococcus gattii infections are considered to be acquired via inhalation of aerosolized particles from the environment.
View Article and Find Full Text PDFBlack yeast in the genus Exophiala are able to grow in hydrocarbon-contaminated environments and are pathogenic in immunosuppressed hosts. The biosurfactant produced by Exophiala species may be associated with strain pathogenicity by changing the hydrophobicity. The aim of this study was to prove the hypothesis that biosurfactant production in Exophilia strains isolated from clinical samples is lower than the strains isolates from toxic (dishwasher and railway sleepers) environments.
View Article and Find Full Text PDFDermanyssus gallinae is one of the important hematophagous ectoparasite species of poultry like chicken, pigeon and wild bird species. These ectoparasites in the form of nymphs or adults who can not find their hosts are also seen in mammals and even in humans. For this reason, they are considered as important for public health.
View Article and Find Full Text PDFFundamental niche prediction of Cryptococcus neoformans and Cryptococcus gattii in Europe is an important tool to understand where these pathogenic yeasts have a high probability to survive in the environment and therefore to identify the areas with high risk of infection. In this study, occurrence data for C. neoformans and C.
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