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https://www.readbyqxmd.com/read/29101629/multiple-opportunistic-infections-in-an-8-month-old-infant-is-it-seronegative-hiv-infection
#1
Uma Nahar Saikia, Aman Gupta, Abin Koshy, Saniya Gupta
We describe an 8-mo-old boy who presented with acute respiratory failure following a prolonged febrile respiratory illness with features suggesting immunodeficiency.
November 4, 2017: Indian Journal of Pediatrics
https://www.readbyqxmd.com/read/29081088/potential-immunotherapeutics-for-immunosuppression-in-sepsis
#2
REVIEW
Jinwook Shin, Mirim Jin
Sepsis is a syndrome characterized by systemic inflammatory responses to a severe infection. Acute hyper-inflammatory reactions in the acute phase of sepsis have been considered as a primary reason for organ dysfunction and mortality, and advances in emergency intervention and improved intensive care management have reduced mortalities in the early phase. However it has been recognized that increased deaths in the late phase still maintain sepsis mortality high worldwide. Patients recovered from early severe illness are unable to control immune system with sepsis-induced immunosuppression such as immunological tolerance, exhaustion and apoptosis, which make them vulnerable to nosocomial and opportunistic infections ultimately leading to threat to life...
November 1, 2017: Biomolecules & Therapeutics
https://www.readbyqxmd.com/read/29046746/perspectives-on-non-neoformans-cryptococcal-opportunistic-infections
#3
REVIEW
Nichole Smith, Matthew Sehring, Jefferson Chambers, Preeti Patel
Non-neoformans Cryptococcus species, including C. laurentii and C. albidus, have historically been classified as exclusively saprophytic. However, recent studies have increasingly implicated these organisms as the causative agent of opportunistic infections in humans. Herein, the case is presented of C. laurentii meningitis in a critically ill patient receiving corticosteroids. C. laurentii has been implicated in an additional 18 cases of opportunistic infection, predominantly of the skin, bloodstream, and central nervous system...
October 2017: Journal of Community Hospital Internal Medicine Perspectives
https://www.readbyqxmd.com/read/29038255/studies-of-pseudomonas-aeruginosa-mutants-indicate-pyoverdine-as-the-central-factor-in-inhibition-of-aspergillus-fumigatus-biofilm
#4
Gabriele Sass, Hasan Nazik, John Penner, Hemi Shah, Shajia Rahman Ansari, Karl V Clemons, Marie-Christine Groleau, Anna-Maria Dietl, Paolo Visca, Hubertus Haas, Eric Déziel, David A Stevens
Pseudomonas aeruginosa (Pa) and Aspergillus fumigatus (Af) are common opportunistic bacterial and fungal pathogens, respectively. They often co-exist in airways of immunocompromised patients and individuals with cystic fibrosis, where they form biofilms and cause acute and chronic illnesses. Hence the interactions between them have long been of interest, and it is known that Pa can inhibit Af in vitro We have approached the definition of the inhibitory Pa molecules by studying 24 Pa mutants, with various virulence genes deleted, for their ability to inhibit Af biofilms...
October 16, 2017: Journal of Bacteriology
https://www.readbyqxmd.com/read/28954163/use-of-the-coding-causes-of-death-in-hiv-in-the-classification-of-deaths-in-northeastern-brazil
#5
Diana Neves Alves, Cristiane Campello Bresani-Salvi, Joanna d'Arc Lyra Batista, Ricardo Arraes de Alencar Ximenes, Demócrito de Barros Miranda-Filho, Heloísa Ramos Lacerda de Melo, Maria de Fátima Pessoa Militão de Albuquerque
OBJECTIVE: Describe the coding process of death causes for people living with HIV/AIDS, and classify deaths as related or unrelated to immunodeficiency by applying the Coding Causes of Death in HIV (CoDe) system. METHODS: A cross-sectional study that codifies and classifies the causes of deaths occurring in a cohort of 2,372 people living with HIV/AIDS, monitored between 2007 and 2012, in two specialized HIV care services in Pernambuco. The causes of death already codified according to the International Classification of Diseases were recoded and classified as deaths related and unrelated to immunodeficiency by the CoDe system...
2017: Revista de Saúde Pública
https://www.readbyqxmd.com/read/28947683/headspace-volatile-organic-compounds-from-bacteria-implicated-in-ventilator-associated-pneumonia-analysed-by-td-gc-ms
#6
Oluwasola Lawal, Howbeer Muhamadali, Waqar Ahmed, Iain R White, Tamara M E Nijsen, Royston Goodacre, Stephen J Fowler
Ventilator-associated pneumonia (VAP) is a healthcare-acquired infection arising from the invasion of the lower respiratory tract by opportunistic pathogens in critically ill ventilated patients. The current method of diagnosis requires the culture of an airway sample such as bronchoalveolar lavage, which is invasive to obtain and may take up to seven days to identify a causal pathogen, or indeed rule out infection. While awaiting results, patients are administered empirical antibiotics; risks of this approach include lack of effect on the causal pathogen, contribution to the development of antibiotic resistance and downstream effects such as increased length of intensive care stay, cost, morbidity and mortality...
September 26, 2017: Journal of Breath Research
https://www.readbyqxmd.com/read/28934415/first-report-of-urease-activity-in-the-novel-systemic-fungal-pathogen-emergomyces-africanus-a-comparison-with-the-neurotrope-cryptococcus-neoformans
#7
Barbra Lerm, Chris Kenyon, Ilan S Schwartz, Heinrich Kroukamp, Riaan de Witt, Nelesh P Govender, G Sybren de Hoog, Alfred Botha
Cryptococcus neoformans is an opportunistic pathogen responsible for the AIDS-defining illness, cryptococcal meningitis. During the disease process, entry of cryptococcal cells into the brain is facilitated by virulence factors that include urease enzyme activity. A novel species of an Emmonsia-like fungus, recently named Emergomyces africanus, was identified as a cause of disseminated mycosis in HIV-infected persons in South Africa. However, in contrast to C. neoformans, the enzymes produced by this fungus, some of which may be involved in pathogenesis, have not been described...
November 1, 2017: FEMS Yeast Research
https://www.readbyqxmd.com/read/28933175/-hiv-infection-a-new-disease-of-internal-medicine
#8
Svatava Snopková
Modern antiretroviral treatment belongs to the greatest success of current medicine. HIV infection has gone from a death sentence to a manageable chronic disease which develops several decades. Thanks to treatment advances, people with HIV can and do live long and full lives. In the last two decades, the incidence AIDS defining illnesses have been dramatically reduced especially opportunistic infections and malignancies, whereas the role of non-infection comorbidities has risen than age-matched HIV uninfected adults...
2017: Vnitr̆ní Lékar̆ství
https://www.readbyqxmd.com/read/28855801/culture-dependent-bacteria-in-commercial-fishes-qualitative-assessment-and-molecular-identification-using-16s-rrna-gene-sequencing
#9
Nabeel M Alikunhi, Zenon B Batang, Haitham A AlJahdali, Mohammed A M Aziz, Abdulaziz M Al-Suwailem
Fish contamination has been extensively investigated along the Saudi coasts, but studies pertaining to bacterial pathogens are scarce. We conducted qualitative assessment and molecular identification of culture-dependent bacteria in 13 fish species from three coastal sites and a local fish market in Jeddah, Saudi Arabia. Bacterial counts of gills, skin, gut and muscle were examined on agar plates of Macconkey's (Mac), Eosin Methylene Blue (EMB) and Thiosulfate Citrate Bile Salts (TCBS) culture media. Bacterial counts significantly differed between species, sources and feeding habits of examined fishes...
September 2017: Saudi Journal of Biological Sciences
https://www.readbyqxmd.com/read/28855583/bacterial-community-diversity-on-in-shell-walnut-surfaces-from-six-representative-provinces-in-china
#10
Lihui Zhang, Shaojin Wang
Walnuts (Juglans regia) have been associated with foodborne illness outbreaks in recent years. Thus, the purpose of this study was to investigate the distribution of bacteria on in-shell walnut surfaces from six representative provinces in China. The bacterial populations on walnut surfaces were investigated by high-throughput sequencing based on the bacterial 16 S rRNA hypervariable region V4. Twenty-eight samples were collected from fourteen regions in six provinces and harvested in different periods (the fresh in 2016 and the old in 2015)...
August 30, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28852452/adrenal-incidentaloma-in-a-patient-with-hiv-aids
#11
Jason Ramsingh, Carol Watson
Human immunodeficiency virus (HIV) is well known to be associated with various neoplasms and opportunistic infections. Kaposi sarcoma (KS), associated with human herpes virus 8 (HHV8) infection, is the most common tumour in HIV positive patients and is also an acquired immune deficiency syndrome (AIDS) defining illness. Cutaneous manifestations are the most common presenting symptom; however, visceral involvement is also recognized. We present the case of a 55-year-old male who was diagnosed with AIDS-related KS, who was referred to our surgical unit with an indeterminate left adrenal lesion...
July 2017: Journal of Surgical Case Reports
https://www.readbyqxmd.com/read/28843122/lactobionic-acid-enhances-the-synergistic-effect-of-nisin-and-thymol-against-listeria-monocytogenes-scott-a-in-tryptic-soy-broth-and-milk
#12
Huaiqiong Chen, Qixin Zhong
Listeria monocytogenes is a Gram-positive opportunistic human pathogen and it remains a significant cause of foodborne illnesses. A variety of natural and synthetic compounds have been studied to inhibit the growth of L. monocytogenes in foods. Antimicrobial combinations with synergistic antilisterial properties can reduce the dose of each antimicrobial, which can be further enhanced by chelating compounds. Therefore, the objective of this study was to determine antilisterial properties of binary or ternary combinations of lactobionic acid (LBA), nisin, and thymol in tryptic soy broth (TSB), 2% reduced-fat milk, and whole milk...
August 18, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/28803549/comparative-gut-microbiota-and-resistome-profiling-of-intensive-care-patients-receiving-selective-digestive-tract-decontamination-and-healthy-subjects
#13
Elena Buelow, Teresita D J Bello González, Susana Fuentes, Wouter A A de Steenhuijsen Piters, Leo Lahti, Jumamurat R Bayjanov, Eline A M Majoor, Johanna C Braat, Maaike S M van Mourik, Evelien A N Oostdijk, Rob J L Willems, Marc J M Bonten, Mark W J van Passel, Hauke Smidt, Willem van Schaik
BACKGROUND: The gut microbiota is a reservoir of opportunistic pathogens that can cause life-threatening infections in critically ill patients during their stay in an intensive care unit (ICU). To suppress gut colonization with opportunistic pathogens, a prophylactic antibiotic regimen, termed "selective decontamination of the digestive tract" (SDD), is used in some countries where it improves clinical outcome in ICU patients. Yet, the impact of ICU hospitalization and SDD on the gut microbiota remains largely unknown...
August 14, 2017: Microbiome
https://www.readbyqxmd.com/read/28793176/neutralization-of-pathogenic-fungi-with-small-molecule-immunotherapeutics
#14
Egor Chirkin, Viswanathan Muthusamy, Paul Mann, Terry Roemer, Philippe G Nantermet, David A Spiegel
Systemic fungal infections represent an important public health concern, and new antifungal agents are highly desirable. Herein, we describe the design, synthesis, and biological evaluation of a novel class of antifungal compounds called antibody-recruiting molecules targeting fungi (ARM-Fs). Our approach relies on the use of non-peptidic small molecules, which selectively bind fungal cells and recruit endogenous antibodies to their surfaces, resulting in immune-mediated clearance. Using the opportunistic fungal pathogen Candida albicans as a model, we identified a highly specific bifunctional molecule able to mediate the engulfment and phagocytosis of C...
August 9, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28770187/t-cell-lymphopenia-detected-by-newborn-screening-in-two-siblings-with-an-xq13-1-duplication
#15
Xavier Rios, Ivan K Chinn, Jordan S Orange, Celine I Hanson, Nicholas L Rider
Newborn screening for severe combined immunodeficiency has proven successful in identifying infants with T-cell deficiencies before they become severely ill. Additionally, the newborn screen can detect subtle early phenotypes that may become severe later in life. We present the case of siblings with features suggestive of T-cell lymphopenia identified as having low T-cell receptor excision circles counts by newborn screening. Expanded immune testing showed robust lymphocyte mitogen and antigen responses with normal vaccine responses and immunoglobulin levels for both boys over time...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/28760727/randomized-trial-comparing-the-electronic-composite-psychosocial-screener-youthchat-with-a-clinician-interview-assessment-for-young-people-a-study-protocol
#16
Hiran Thabrew, Arden Corter, Felicity Goodyear-Smith, Mary Goldfinch
BACKGROUND: Psychosocial problems such as depression, anxiety, and substance abuse are common and burdensome in young people, particularly those with long-term physical conditions such as asthma and diabetes. In New Zealand, "screening" for such problems is undertaken routinely only with Year 9 students in low-decile schools and opportunistically in pediatric settings using a nonvalidated and time-consuming clinician-administered Home, Education/employment, Eating, Activity, Drugs, Sexuality, Suicide/depression, Safety (HEEADSSS) interview...
July 31, 2017: JMIR Research Protocols
https://www.readbyqxmd.com/read/28759468/the-evaluation-of-critically-ill-transplant-patients-with-infectious-diarrhea
#17
Diana F Florescu
PURPOSE OF REVIEW: The review summarizes the epidemiology, risk factors, clinical presentation, diagnosis and management of the most important etiologic agents of infectious diarrhea in critically ill transplant recipients. RECENT FINDINGS: Diarrhea, frequently caused by infectious pathogens, can cause significant morbidity and mortality in transplant recipients. Diarrhea can lead to severe dehydration, acute renal failure, medication toxicity, rejection, graft-versus-host disease and impairs patients' quality of life...
October 2017: Current Opinion in Critical Care
https://www.readbyqxmd.com/read/28729860/burn-injury-leads-to-increase-in-relative-abundance-of-opportunistic-pathogens-in-the-rat-gastrointestinal-microbiome
#18
Guangtao Huang, Kedai Sun, Supeng Yin, Bei Jiang, Yu Chen, Yali Gong, Yajie Chen, Zichen Yang, Jing Chen, Zhiqiang Yuan, Yizhi Peng
The gastrointestinal microbiome is crucial in human health. With greater than 10 times the cell count of an individual, the gastrointestinal microbiome provides many benefits to the host. It plays an important role in chronic illnesses and immune diseases and also following burns and trauma. This study aimed to determine whether severe burns affect the gastrointestinal microbiome during the early stages of after burn injury and the extent to which the microbiome is disturbed by such burns. We used a rat burn model to investigate any changes occurring in the microbiome after the burn trauma using 16S rRNA sequencing and downstream α-diversity, β-diversity, and taxonomy analysis...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28720125/profiling-of-the-perturbed-metabolomic-state-of-mouse-spleen-during-acute-and-chronic-toxoplasmosis
#19
Xiao-Qing Chen, Chun-Xue Zhou, Hany M Elsheikha, Shuai He, Gui-Xue Hu, Xing-Quan Zhu
BACKGROUND: Toxoplasma gondii, a common opportunistic protozoan, is a leading cause of illness and mortality among immunosuppressed individuals and during congenital infections. Current therapeutic strategies for toxoplasmosis are not fully effective at curtailing disease progression in these cases. Given the parasite ability to influence host immunity and metabolism, understanding of the metabolic alterations in the host's immune organs during T. gondii infection may enhance the understanding of the molecular mechanisms that define the pathophysiology of T...
July 18, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28694793/comparative-genomic-characterization-of-the-highly-persistent-and-potentially-virulent-cronobacter-sakazakii-st83-cc65-strain-h322-and-other-st83-strains
#20
Hannah R Chase, Gopal R Gopinath, Athmanya K Eshwar, Andrea Stoller, Claudia Fricker-Feer, Jayanthi Gangiredla, Isha R Patel, Hediye N Cinar, HyeJin Jeong, ChaeYoon Lee, Flavia Negrete, Samantha Finkelstein, Roger Stephan, Ben D Tall, Angelika Lehner
Cronobacter (C.) sakazakii is an opportunistic pathogen and has been associated with serious infections with high mortality rates predominantly in pre-term, low-birth weight and/or immune compromised neonates and infants. Infections have been epidemiologically linked to consumption of intrinsically and extrinsically contaminated lots of reconstituted powdered infant formula (PIF), thus contamination of such products is a challenging task for the PIF producing industry. We present the draft genome of C. sakazakii H322, a highly persistent sequence type (ST) 83, clonal complex (CC) 65, serotype O:7 strain obtained from a batch of non-released contaminated PIF product...
2017: Frontiers in Microbiology
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