Dissimilatory Iodate-Reducing Microorganisms Contribute to the Enrichment of Iodine in Groundwater.

Iodate reduction by dissimilatory iodate-reducing microorganisms (DIRMs) plays a crucial role in the biogeochemical cycling of iodine on Earth. However, the occurrence and distribution of DIRMs in iodine-rich groundwater remain unclear. In this study, we isolated the dissimilatory iodate-reducing bacteriumAzonexus hydrophilusstrain NCP973 from a geogenic high-iodine groundwater of China for the first time. The analysis of genome, transcriptome, and heterologous expression revealed that strain NCP973 uses the dissimilatory iodate-reducing enzyme IdrABP1P2 to reduce dissolved or in situ sediment-bound iodate to iodide. The location of IdrABP1P2 in the conjugative plasmid of strain NCP973 implies that IdrABP1P2 could be spread by horizontal gene transfer and allow the recipient microorganisms to participate in the enrichment of iodide in aquifers. Based on the global iodine-rich groundwater metagenomes and genomes, the identification of idrA showed that phylogenetically diverse DIRMs are widely distributed not only in geogenic high-iodine groundwater of China but also in radionuclide-contaminated groundwater of USA as well as in subsurface cavern waters in Germany and Italy. Moreover, the abundance of idrA was found to be higher in groundwater with a relatively high iodine content. Collectively, these results suggest that terrestrial iodine-affected groundwater systems are another important habitat for DIRMs in addition to marine environments, and their activity in aquifers triggers the mobilization and enrichment of iodine in groundwater worldwide.

Diagnosis of invasive fungal infections: challenges and recent developments.

BACKGROUND: The global burden of invasive fungal infections (IFIs) has shown an upsurge in recent years due to the higher load of immunocompromised patients suffering from various diseases. The role of early and accurate diagnosis in the aggressive containment of the fungal infection at the initial stages becomes crucial thus, preventing the development of a life-threatening situation. With the changing demands of clinical mycology, the field of fungal diagnostics has evolved and come a long way from traditional methods of microscopy and culturing to more advanced non-culture-based tools. With the advent of more powerful approaches such as novel PCR assays, T2 Candida, microfluidic chip technology, next generation sequencing, new generation biosensors, nanotechnology-based tools, artificial intelligence-based models, the face of fungal diagnostics is constantly changing for the better. All these advances have been reviewed here giving the latest update to our readers in the most orderly flow. MAIN TEXT: A detailed literature survey was conducted by the team followed by data collection, pertinent data extraction, in-depth analysis, and composing the various sub-sections and the final review. The review is unique in its kind as it discusses the advances in molecular methods; advances in serology-based methods; advances in biosensor technology; and advances in machine learning-based models, all under one roof. To the best of our knowledge, there has been no review covering all of these fields (especially biosensor technology and machine learning using artificial intelligence) with relevance to invasive fungal infections. CONCLUSION: The review will undoubtedly assist in updating the scientific community's understanding of the most recent advancements that are on the horizon and that may be implemented as adjuncts to the traditional diagnostic algorithms.

Differences in the luminal and mucosal gut microbiomes and metabolomes of oriental rat snake (Ptyas mucosus).

Previous studies regarding the gastrointestinal biogeography of microbiomes generally focused on longitudinal comparisons, whereas few studies have compared luminal and mucosal microbiomes. Investigations of the snake gut microbiome have attracted interest because of the unique digestive physiology and hibernation behavior, but adequate sampling methods must be developed. Here, we used an omics approach combining 16S rRNA gene sequencing with untargeted metabolomics to profile the luminal and mucosal gut microbiomes and metabolomes in oriental rat snakes, with the goal of revealing the heterogeneity and co-occurrence at these sites. The α-diversity of the gut microbiome was significantly higher at mucosal sites than at luminal sites. Microbial composition also differed according to sampling site, with significant differences in the abundances of dominant phyla and genera, as well as ß-diversity clustering and distribution. Metabolome profiling revealed differences that were mainly related to cholinergic substances and nucleic acids. Analysis of variations in Kyoto Encyclopedia of Genes and Genomes functions of microbes and metabolites showed that the mucosal microbiome was more frequently involved in genetic information processing and cellular processes, whereas the luminal microbiome generally participated in metabolic regulation. Notably, we found a greater abundance of the opportunistic pathogen genus Escherichia-Shigella at luminal sites and higher levels of the lipid-regulator metabolite fenfluramine at mucosal sites. Despite the extensive differences between the two sampling sites, the results revealed similarities in terms of amplicon sequence variant composition and dominant core microbes. This pilot exploration of luminal and mucosal microbiomes and metabolites provides key insights to guide future research. KEY POINTS: • Snake luminal and mucosal microbiota was distinct in composition and function. • Metabolome profiling revealed differences related to different metabolites. • The pathogenic microbes are more likely to colonize the gut lumina.

Association Between Benefit Finding and Self-care Management in Heart Failure Patient-Caregiver Dyads: The Mediating Role of Mutuality.

BACKGROUND: Inadequate self-care management has been reported in patients with heart failure (HF) and their family caregivers. However, evidence on the influencing factors and corresponding action paths for self-care management within a dyadic context is limited. OBJECTIVE: The aim of this study was to examine dyadic associations between benefit finding and self-care management in HF patient-caregiver dyads and the mediating role of mutuality in these associations. METHODS: This cross-sectional study was conducted in China, and a convenience sample of 253 HF patient-caregiver dyads was included in the analysis. Dyadic benefit finding and mutuality, patients' self-care management, and caregivers' contributions to self-care management were measured using self-reported questionnaires. The actor-partner interdependence model and actor-partner interdependence mediation model were adopted to analyze the data. RESULTS: Patients' benefit finding had an actor effect on their own self-care management (ß = 0.134, P < .05) and a partner effect on caregivers' contributions to self-care management (ß = 0.130, P < .05). Similarly, caregivers' benefit finding had an actor effect on their contributions to self-care management (ß = 0.316, P < .01) and a partner effect on patients' self-care management (ß = 0.187, P < .01). Moreover, patients' mutuality completely mediated the actor effect of their benefit finding on self-care management (ß = 0.127; 95% confidence interval, 0.032-0.233), and caregivers' mutuality partially mediated the actor effect of their benefit finding on contributions to self-care management (ß = 0.060; 95% confidence interval, 0.012-0.124). In addition, caregivers' mutuality completely mediated the partner effect of patients' benefit finding on caregivers' contributions to self-care management (ß = 0.036; 95% confidence interval, 0.009-0.081). CONCLUSIONS: The findings revealed the importance of benefit finding and mutuality, 2 modifiable factors positively associated with dyadic HF self-care management. Dyadic interventions targeting on enhancing benefit finding and mutuality should be designed and implemented to improve HF self-care management.

Characteristics and Prognosis of Talaromyces marneffei Infection in HIV-positive Children in Southern China.

Knowledge about the clinical characteristics and prognostic factors of Talaromyces marneffei infection in children is limited, especially in HIV-positive children. We performed a retrospective study of all HIV-positive pediatric inpatients with T. marneffei infection in a tertiary hospital in Southern China between 2014 and 2019 and analyzed the related risk factors of poor prognosis using logistic regression. Overall, 28 cases were enrolled and the prevalence of talaromycosis in AIDS children was 15.3% (28/183). The median age of the onset was 8 years (range: 1-14 years). The typical manifestation of skin lesion with central umbilication was not common (21.4%). All the children had very low CD4+ cell counts (median 13.5 cells/µL, range: 3-137 cells/µL) on admission. 92.9% children were misdiagnosed and talaromycosis was only noted after positivity for HIV infection. 89.3% diagnoses of T. marneffei infections were based on positive blood cultures, with a long culture time (median 7 days, range from 3-14 days). The sensitivity of fungus 1,3-ß-D-glucan assay was 63.2%. Amphotericin B was superior to itraconazole in the induction antifungal therapy of talaromycosis in HIV-positive children. A six-month follow-up revealed a 28.6% mortality. Lower ratio of CD4+/CD8+ and amphotericin B treatment not over 7 days predicted poor prognosis. Our retrospective study provided an overview and update on the current knowledge of talaromycosis in HIV-positive children. Pediatricians in endemic areas should be aware of mycoses to prevent misdiagnosis. 1,3-ß-D-glucan assay did not show optimal sensitivity. Amphotericin B treatment over 7 days can improve poor prognosis.

Epidemiology of candidemia in Shiraz, southern Iran: A prospective multicenter study (2016-2018).

Systematic candidemia studies, especially in southern Iran, are scarce. In the current prospective study, we investigated candidemia in three major healthcare centers of Shiraz, the largest city in southern Iran. Yeast isolates from blood and other sterile body fluids were identified by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry and subjected to antifungal susceptibility testing (AFST) using the broth microdilution method. Clinical data were retrieved from patients' medical records. In total, 113 yeast isolates were recovered from 109 patients, over 60% of whom received fluconazole. Antifungal drugs were prescribed without considering species identification or AFST. The all-cause mortality rate was 28%. Almost 30% of the patients were from intensive care units (ICUs). Candida albicans (56/113; 49.5%) was the most prevalent species followed by C. glabrata (26/113; 23%), C. parapsilosis (13/113; 11.5%), C. tropicalis (7/113; 6.2%), and C. dubliniensis (5/113; 4.4%). Only five isolates showed antifungal resistance or decreased susceptibility to fluconazole: one C. orthopsilosis isolate from an azole-naïve patient and two C. glabrata, one C. albicans, and one C. dubliniensis isolates from patients treated with azoles, who developed therapeutic failure against azoles later. Our results revealed a low level of antifungal resistance but a notable rate of azole therapeutic failure among patients with candidemia due to non-albicans Candida species, which threaten the efficacy of fluconazole, the most widely used antifungal in southern regions of Iran. Candidemia studies should not be confined to ICUs and treatment should be administered based on species identification and AFST results.

Landscape of candidemia is blurred in Iran, and only two studies from Tehran have extensively explored the epidemiology of candidemia. However, candidemia data from the other regions are notoriously scarce, which precludes from reaching a consensus regarding species distribution, the burden of antifungal resistance, and the clinical features of infected patients. Therefore, we conducted the current prospective candidemia study in Shiraz, one of the largest cities located in the south of Iran, from April 2016 to April 2018. More than 63% of the candidemia infections were treated by fluconazole and species identification and antifungal susceptibility testing were not used for decision making regarding the choice of antifungal treatment. Approximately 70% of the candidemia cases occurred in the wards outside of the ICUs. Candida albicans, C. glabrata, C. parapsilosis, C. tropicalis, and C. dubliniensis were the five leading causative agents of candidemia. Antifungal resistance was rare and fluconazole resistance and/or non-wild type phenotypes were noticed in five isolates, only one was C. albicans and the rest were non-albicans Candida (NAC) species, including C. glabrata, C. dubliniensis, and C. orthopsilosis. Except for C. orthopsilosis, which was isolated from an azole-naïve patient, the rest of isolates were recovered from patients treated with azoles and all showed therapeutic failure to azoles. Collectively, our data will complete the candidemia picture in Iran and show that, although the level of resistance was rare, the therapeutic failure was notable among NAC species, which threatens the efficacy of fluconazole, the most widely used antifungal in Southern regions of Iran. Moreover, we showed that candidemia is poorly managed in Iran since species identification tools along with antifungal susceptibility testing were not used to select appropriate antifungal treatment.

The clinical profiles and outcomes of HIV-negative cryptococcal meningitis patients in type II diabetes mellitus.

BACKGROUND: The clinical profiles and outcomes of cryptococcal meningitis have been shown to vary depending on the underlying condition. The aim of this study was to investigate clinical characteristics and outcomes in patients with and without type II diabetes mellitus. METHODS: A retrospective study was performed. Clinical data of HIV-negative cryptococcal meningitis patients with type II diabetes mellitus (n = 26) and without type II diabetes mellitus (n = 52) referring to the Jiangxi Chest Hospital between January 2012 to December 2018 were analyzed. The data were analyzed using chi square, none-parametric tests, and logistic regression. P-values < 0.05 were considered significant. RESULTS: In this study, cryptococcal meningitis patients suffering from type II diabetes mellitus had a higher mortality (23.08% vs. 7.69%; P = 0.055), and required longer hospitalization (59.58 vs. 42.88 days; P = 0.132). Moreover, cerebrospinal fluid examinations revealed that cryptococcal meningitis patients with type II diabetes mellitus had higher opening pressure (271.54 vs. 234.23 mmH2O; P = 0.125).The results of multivariate regression analysis revealed that cryptococcal meningitis patients with type II diabetes were more often presented with visual disorders (28.54% vs. 11.54%; [95% CI 0.056-0.705]; p = 0.012), and had higher cerebrospinal fluid protein levels (1027.62 ± 594.16 vs. 705.72 ± 373.88 mg/l; [95% CI 1.000-1.002]; p = 0.016). Among patients with type II diabetes mellitus, nausea and vomiting was more frequent at the initial visit in those died (100% vs. 50%; p = 0.027), and 66% of died type II diabetes mellitus patients were poorly controlled blood glucose level, compared with 30% in survival type II diabetes mellitus patients. CONCLUSION: This study suggests that cryptococcal meningitis patients with type II diabetes mellitus differ significantly from cryptococcal meningitis patients without type II diabetes mellitus with respect to clinical symptoms such as visual disorders and cerebrospinal fluid examination. The presence of nausea and vomiting among type II diabetes mellitus patients could have implication in mortality.

First Report of Candidemia Clonal Outbreak Caused by Emerging Fluconazole-Resistant Candida parapsilosis Isolates Harboring Y132F and/or Y132F+K143R in Turkey.

Clonal outbreaks of fluconazole-resistant (FLZR) Candida parapsilosis isolates have been reported in several countries. Despite its being the second leading cause of candidemia, the azole resistance mechanisms and the clonal expansion of FLZR C. parapsilosis blood isolates have not been reported in Turkey. In this study, we consecutively collected C. parapsilosis blood isolates (n = 225) from the fifth largest hospital in Turkey (2007 to 2019), assessed their azole susceptibility pattern using CLSI M27-A3/S4, and sequenced ERG11 for all and MRR1, TAC1, and UPC2 for a selected number of C. parapsilosis isolates. The typing resolution of two widely used techniques, amplified fragment length polymorphism typing (AFLP) and microsatellite typing (MST), and the biofilm production of FLZR isolates with and without Y132F were compared. Approximately 27% of isolates were FLZR (60/225), among which 90% (54/60) harbored known mutations in Erg11, including Y132F (24/60) and Y132F+K143R (19/60). Several mutations specific to FLZR isolates were found in MRR1, TAC1, and UPC2 AFLP grouped isolates into two clusters, while MST revealed several clusters. The majority of Y132F/Y132F+K143R isolates grouped in clonal clusters, which significantly expanded throughout 2007 to 2019 in neonatal wards. Candida parapsilosis isolates carrying Y132F were associated with significantly higher mortality and less biofilm production than other FLZR isolates. Collectively, we documented the first outbreak of FLZR C. parapsilosis blood isolates in Turkey. The MRR1, TAC1, and UPC2 mutations exclusively found in FLZR isolates establishes a basis for future studies, which will potentially broaden our knowledge of FLZR mechanisms in C. parapsilosis MST should be a preferred method for clonal analysis of C. parapsilosis isolates in outbreak scenarios.

Clinical and microbiological features of candiduria in critically ill adult patients in Shiraz, Iran (2016-2018): deviations from international guidelines and fluconazole therapeutic failure.

Candiduria is common among patients admitted to intensive care units (ICUs); however, clinical and microbiological data are limited, which accounts for non-compliance with international guidelines, including over treatment of asymptomatic candiduria that promotes antifungal resistance. This prospective study included adult patients admitted to ICUs of five referral hospitals in Shiraz, Iran, during 2016-2018. Species were identified by MALDI-TOF MS, and antifungal susceptibility was assessed according to CLSI M27-A3/S4. Among 2086 patients, 162 and 293 developed candiduria and bacteriuria, respectively. In total, 174 yeast isolates were collected; 88.5% were Candida albicans (91/174; 52.2%), C. glabrata (38/174; 21.8%), and C. tropicalis (25/174; 14.3%). Antifungal resistance was rare; only two isolates (one C. tropicalis and one C. krusei) were fluconazole resistant. Symptomatic candiduria was noted in 31.4% of patients (51/162); only 37% (19/51) of them were treated and 36.82% (7/19) showed fluconazole therapeutic failure. Two symptomatic patients developed candidemia shortly after candiduria. Among asymptomatic patients, 31.5% (35/111) were overtreated with fluconazole. The mortality rate was 25.3% (41/162); it did not differ between symptomatic and asymptomatic patients. Our results indicate that deviation from standard-of-care treatment for candiduria is a matter of concern given the high rate of fluconazole therapeutic failure among patients with symptomatic candiduria. LAY SUMMARY: Candiduria is an underestimated clinical presentation among critically ill patients and detailed data are scarce in this regard. Given the high rate of fluconazole therapeutic failure and development of candidemia in some cases, the mistreatment of candiduria should not be overlooked by clinicians.

Cryptococcal Meningitis: A Rare Complication in HIV-Negative Patients with Nephrotic Syndrome in A Chinese Teaching Hospital.

Cryptococcal meningitis (CM) is a rare complication in HIV-negative patients with nephrotic syndrome (NS), and knowledge about the clinical profile of NS with CM is limited. We performed a retrospective study of all patients with CM-NS admitted to the Jiangxi Chest Hospital (JCH) between 2011 and 2019 and systematically reviewed cases of CM-NS reported in the Chinese language. Among a total of 226 CM patients referred to the JCH, seven had NS (3.1%); these patients were combined with 22 CM-NS cases reported in the Chinese language for analysis. Headache, fever, nausea, and meningeal irritation were the most common initial symptoms, and the median time from symptom onset to CM diagnostic confirmation was 30 days. One patient initially tested negative for CM but was later confirmed to be positive. Among the 29 analysed patients, 41.4% (12/29) were misdiagnosed with other complications, including four patients from the JCH (4/7, 57.1%) and eight patients from published reports (8/22, 36.3%). The overall mortality rate was 17.2% (5/29); among these patients, 60% (3/5) were misdiagnosed. Induction treatment with amphotericin B plus 5-fluorocytosine (9/29) or amphotericin B plus fluconazole (7/29) successfully cleared the infection. Fluconazole may be a suitable alternative if 5-fluorocytosine is not readily available or not tolerated, and repetitive testing is important to reach a conclusive diagnosis in NS patients suspected of having CM.

Unequivocal identification of an underestimated opportunistic yeast species, Cyberlindnera fabianii, and its close relatives using a dual-function PCR and literature review of published cases.

Although Cyberlindnera fabinaii is a rare opportunist yeast species, its ability to cause septicemia, produce biofilm, and rapid acquisition of resistance to fluconazole and voriconazole, reinforced the urge for its identification from its closely related species. Widely used biochemical assays mainly identify Cyberlindnera fabinaii as Cyberlindnera jadinii and Wickerhamomyces anomalus, resulting in underestimation of this yeast in clinical settings. Moreover, the urge for a reliable molecular means of identification remains unsolved for 28 years. In order to unequivocally differentiate Cy. fabianii, Cy. mississipiensis, Cy. jadinii, and W. anomalus, we designed a dual-function multiplex polymerase chain reaction (PCR) assay. Challenging our dual-function multiplex PCR assay with 30 most clinically important yeast species, proved its specificity. Although conventional PCR could differentiate four target species, the real-time PCR counterpart due to Tm overlap misidentified Cy. mississipiensis as Cy. jadinii. Alongside of presenting a comprehensive literature review of published cases of Cy. fabianii from 1990 to 2018, we collected various clinical isolates from Tehran, Shiraz, and Fasa (July 1, 2017, to December 31, 2017) to find a passive relative distribution of these closely-related species in Iran. Subjecting our Iranian collection of yeast isolates to matrix-assisted laser desorption/ionization-time of flight (MALDI-TOF) MS and LSU and ITS rDNA sequencing revealed six isolates of Cy. fabianii (central venous catheter n = 2 and vaginal swabs n = 4) and one isolate of Cy. jadinii (vaginal swabs). Due to the use of biochemical assays in global ARTEMIS study, we encourage reidentification of clinical isolates of Cy. jadinii and Cy. jadinii using MALDI-TOF or Sanger sequencing that might lead to correcting the distribution of this fungus.

Identification of nine cryptic species of Candida albicans, C. glabrata, and C. parapsilosis complexes using one-step multiplex PCR.

BACKGROUND: Candida albicans, Candida glabrata, and Candida parapsilosis are three prevalent causes of candidiasis, worldwide. These species are considered as nine medically important complex species. Limited knowledge about these newly recognized species prompted us to develop a one-step, multiplex PCR to detect and identify them in clinical settings. METHODS: Primers targeting Hyphal Wall Protein I gene for the C. albicans, C. dubliniensis, C. africana, Intergenic Spacer for the C. glabrata, C. nivariensis, C. bracarensis, and Intein and ITS rDNA for the C. parapsilosis, C. orthopsilosis, and C. metapsilosis were designed. Using 168 CBS reference strains and 280 clinical isolates, the specificity and reproducibility of the developed assay were evaluated. RESULTS: Our developed assay successfully identified and distinguished all the nine species. No cross-reaction with closely- and distantly-related yeast species, Aspergillus species and human DNA was observed, resulting in 100% specificity. The ambiguous results obtained by MALDI-TOF for C. albicans and C. africana were corrected by our 9-plex PCR assay. This assay identified all the cryptic complex species from two test sets from Iran and China, correctly. CONCLUSIONS: Our developed multiplex assay is accurate, specific, cost/time-saving, and works without the tedious DNA extraction steps. It could be integrated into routine clinical laboratories and as a reliable identification tool and has the potential to be implemented into epidemiological studies to broaden the limited knowledge of cryptic species complexes.

Self-efficacy for self-regulation and fear of failure as mediators between self-esteem and academic procrastination among undergraduates in health professions.

Academic procrastination has been a widespread problem behavior among undergraduates. This study aimed to examine the prevalence of academic procrastination among undergraduates in health professions, and explore the mediation effects of self-efficacy for self-regulation and fear of failure in the relationship between self-esteem and academic procrastination. A cross-sectional design was used to study 1184 undergraduates in health professions from China. Participants completed measures of academic procrastination, self-esteem, self-efficacy for self-regulation and fear of failure. We used Pearson product-moment correlation to examine the bivariate correlations between study variables, and path analysis to examine mediation. Among the 1184 undergraduates, 877 (74.1%) procrastinated on at least one type of academic task. The total score for academic procrastination was negatively correlated with scores for self-esteem and self-efficacy for self-regulation, and positively correlated with the score for fear of failure. Moreover, the relationship between self-esteem and academic procrastination was fully mediated by self-efficacy for self-regulation (indirect effect: ß = - .15, 95% bootstrap CI - .19 to - .11) and fear of failure (indirect effect: ß = - .06, 95% bootstrap CI - .09 to - .04). These findings suggest that interventions targeting the enhancement of self-efficacy for self-regulation and the conquest of fear of failure may prevent or reduce academic procrastination among undergraduates in health professions, especially for those with lower self-esteem.

Banana blossom agar (BABA), a new medium to isolate members of the Cryptococcus neoformans/Cryptococcus gattii species complex useful for resource limited countries.

Isolation of representatives of the Cryptococcus neoformans/Cryptococcus gattii species complex can be made using dopamine containing media, such as Niger seed agar and l-DOPA agar. Here, we describe an alternative medium that uses banana flowers. Banana is a dopamine containing fruit and is widely available in tropical and subtropical countries that have high numbers of cryptococcosis patients. This banana blossom-based agar is useful for the enrichment of isolates of the C. neoformans/C. gattii species complex from environmental and clinical materials. The banana blossom agar (BABA) with and without creatinine can differentiate between the melanin forming isolates of the C. neoformans/C. gattii species complex from other yeasts that do not form melanin.

Cryptococcosis in patients with diabetes mellitus II in mainland China: 1993-2015.

Diabetes mellitus II (DM II) is a newly defined independent factor contributing to the morbidity and mortality of cryptococcosis. This retrospective case analysis aims to explore the epidemiology, clinical profile and strain characteristics of cryptococcosis in Chinese DM II patients. This study included 30 cases of cryptococcosis with DM II occurring from 1993 to 2015 in mainland China. The hospital-based prevalence of cryptococcosis in DM II was 0.21%. The mean age of the patients was 56.1 years (95% confidence interval: 51.5, 60.6), and 93% of the patients were older than 40 years. Sixty-two per cent of the patients experienced untreated or poorly controlled blood glucose before infection. Multilocus sequence typing analysis categorised all cultured strains as Cryptococcus neoformans and sequence type 5. Sixty-nine per cent of pulmonary cryptococcosis patients experienced misdiagnoses and treatment delays. Sixty per cent of cryptococcal meningitis patients received substandard antifungal therapy. The overall death rate was 33%. Considering the large population size of DM II patients in China, improved attention should be paid to the high prevalence of cryptococcosis as revealed by us. We also emphasised the importance of blood glucose control for infection prevention, especially among the elderly.

Family Caregiver Contribution to Self-care of Heart Failure: An Application of the Information-Motivation-Behavioral Skills Model.

BACKGROUND: Adherence to self-care behaviors improves outcomes of patients with heart failure (HF). Caregivers play an important role in contributing to self-care. OBJECTIVE: We aimed to explore the relationships among HF knowledge, perceived control, social support, and family caregiver contribution to self-care of HF, based on the Information-Motivation-Behavioral Skills Model. METHODS: Two hundred forty-seven dyads of eligible patients with HF and family caregivers were recruited from a general hospital in China. Structural equation modeling was used to analyze the data obtained with the Caregiver Contribution to Self-care of Heart Failure Index, the Heart Failure Knowledge Test, the Control Attitudes Scale, and the Social Support Rating Scale. RESULTS: In this model, caregiver contribution to self-care maintenance was positively affected by perceived control (ß = .148, P = .015) and caregiver confidence in contribution to self-care (ß = .293, P < .001). Caregiver contribution to self-care management was positively affected by HF knowledge (ß = .270, P < .001), perceived control (ß = .140, P = .007), social support (ß = .123, P = .019), caregiver confidence in contribution to self-care (ß = .328, P < .001), and caregiver contribution to self-care maintenance (ß = .148, P = .006). Caregiver confidence in contribution to self-care was positively affected by HF knowledge (ß = .334, P < .001). CONCLUSIONS: Heart failure knowledge, perceived control, and social support facilitated family caregiver contribution to self-care of HF. Targeted interventions that consider these variables may effectively improve family caregiver contributions to self-care.

Cryptococcosis in HIV-negative Patients with Renal Dialysis: A Retrospective Analysis of Pooled Cases.

Cryptococcosis is a lethal fungal infection mainly caused by Cryptococcus neoformans/C. gattii species. Currently, our understanding of cryptococcosis episodes in HIV-negative patients during renal dialysis remains scarce and fragmented. Here, we performed an analysis of pooled cases to systemically summarize the epidemiology and clinical characteristics of cryptococcosis among HIV-negative patients with renal dialysis. Using pooled data from our hospital and studies identified in four medical databases, 18 cases were identified and analyzed. The median duration time of renal dialysis for peritoneal renal dialysis and hemodialysis cases was 8 months and 36 months, respectively. Several non-neoformans/gattii species were identified among the renal dialysis recipients with cryptococcosis, particularly Cryptococcus laurentii and Cryptococcus albidus, which share similar clinical manifestations as those caused by C. neoformans and C. gattii. Our analyses suggest that physicians should consider the possibility of the occurrence of cryptococcosis among renal dialysis recipients even when cryptococcal antigen test result is negative. The timely removal of the catheter is crucial for peritoneal dialysis patients with cryptococcosis. In addition, there is a need for optimized antifungal treatment strategy in renal dialysis recipients with cryptococcal infections.

Cryptococcosis in Patients with Nephrotic Syndrome: A Pooled Analysis of Cases.

Cryptococcosis is an infection that may be lethal in patients with nephrotic syndrome (NS). However, there is relatively limited epidemiological and clinical data about cryptococcosis in NS patients. We performed a pooled analysis to systemically summarize the epidemiology, risk factors, clinical and laboratory characteristics, treatments and outcomes of cryptococcosis in NS patients. Using data pooled from our hospital and studies identified via searches of three literature databases, 17 cases were identified for inclusion in this analysis. The prevalence of cryptococcosis in NS was 0.3%, with a higher rate in more recent years. Most patients were Asian (94%) and from upper-middle to high-income countries (76%). The median time interval from NS diagnosis to cryptococcosis diagnosis among the cryptococcosis patients was 16 months, and 46% of the identified cryptococcal infections were diagnosed within the first year of NS diagnosis. Cutaneous cryptococcosis was frequently diagnosed among the included patients (35%), 58% received an erroneous diagnosis and inappropriate treatment, 90% of whom had a cryptococcal infection mistaken for a bacterial infection. The mortality rate was 35%. Standard therapeutic strategies should be emphasized for both antifungal treatment and renal disease control. Further studies conducted in various medical centers are warranted to confirm our conclusions.

Comparison of the in vitro activities of newer triazoles and established antifungal agents against Trichophyton rubrum.

One hundred eleven clinical Trichophyton rubrum isolates were tested against 7 antifungal agents. The geometric mean MICs of all isolates were, in increasing order: terbinafine, 0.03 mg/liter; voriconazole, 0.05 mg/liter; posaconazole, 0.11 mg/liter; isavuconazole, 0.13 mg/liter; itraconazole, 0.26 mg/liter; griseofulvin, 1.65 mg/liter; and fluconazole, 2.12 mg/liter.