Miracle-dz/UniFAR-FTUs huggingface dataset:
Evolutionary conservation of actin-binding proteins in Trypanosoma cruzi and unusual subcellular localization of the actin homologue

SUMMARY The actin cytoskeleton controls pivotal cellular processes such as motility and cytokinesis, as well as cell-cell and cell-substrate interactions. Assembly and spatial organization of actin filaments are dynamic events regulated by a large repertoire of actin-binding proteins. This report presents the first detailed characterization of the Trypanosoma cruzi actin (TcActin). Protein sequence analysis and homology modelling revealed that the overall structure of T. cruzi actin is conserved and that the majority of amino-acid changes are concentrated on the monomer surface. Immunofluorescence assays using specific polyclonal antibody against TcActin revealed numerous rounded and punctated structures spread all over the parasitic body. No pattern differences could be found between epimastigotes and trypomastigotes or amastigotes. Moreover, in detergent extracts, TcActin was localized only in the soluble fraction, indicating its presence in the G-actin form or in short filaments dissociated from the microtubule cytoskeleton. The trypanosomatid genome was prospected to identify actin-binding and actin-related conserved proteins. The main proteins responsible for actin nucleation and treadmilling in higher eukaryotes are conserved in T. cruzi.
Migration and motility of spermatozoa in the female reproductive tract of the soft tick Ornithodoros moubata (Acari, Argasidae)

SUMMARY The spermatozoa of ticks are anomalous in many respects: they are very large, cytoplasm-rich cells which lack a flagellum but move with a peculiar gliding motility. Their metamorphosis after deposition in the female has been well documented, but many of the subsequent events in the career of the spermatozoa are controversial or poorly documented. Our observations of motility imply that the many types of motility that have been reported (up to 5 different types in several reports) can be reduced to 2 apparently independent types of active motility: (1) gliding motility generated along the whole spermatozoon and (2) contortions of the anterior tip of the head. These types of motility appear as a consequence of sperm maturation after transfer to the female, but only become pronounced if the female has taken a recent bloodmeal. A consequence of this enhanced gliding motility after feeding is the movement of the spermatozoa out of the naturally ruptured neck of the spermatophore and up the female genital tract. This occurs without any apparent assistance from the female's musculature and likely is the prime mechanism of movement of the spermatozoa to the site of fertilization.
Species-specific probes for the identification of the African tsetse-transmitted trypanosomes†

SUMMARY The first step in studying the epidemiology of a disease is the accurate identification of the pathogen. Traditional reliance on morphological identification has given way to the use of molecular methods for the detection and identification of pathogens, greatly improving our understanding of epidemiology. For the African tsetse-transmitted trypanosomes, the growth of PCR methods for identification of trypanosomes has led to increased appreciation of trypanosome genetic diversity and discovery of hitherto unknown trypanosome species, as well as greater knowledge about the number and type of trypanosome infections circulating in mammalian hosts and vectors. Sequence data and phylogenetic analysis have provided quantitative information on the relatedness of different trypanosome species and allowed the new trypanosome genotypes discovered through the use of species identification methods in the field to be accurately placed in the phylogenetic tree.
Psychological profiles of women complaining of premenstrual symptoms

SummaryA preliminary report is given of an approach to clarifying the relationship in women attending their general practitioners between neurotic symptoms and their premenstrual status. The findings showed that there were as many women complaining of pre-menstrual symptoms who were psychologically healthy as there were of those who were psychologically disturbed. Few women who complained of psychological difficulties were free of premenstrual symptoms. Approximately 75 % of a general practice sample of 521 women complained of at least one premenstrual symptom. Further analysis will be directed at analysing the premenstrual responses in some detail and exploring their relationship with psychiatric, social, and in some cases, hormonal variables.
Dietary Patterns and Risk of Colorectal Cancer: Analysis by Tumor Location and Molecular Subtypes.

BACKGROUND & AIMS Western and prudent dietary patterns have been associated with higher and lower risks of colorectal cancer (CRC), respectively. However, little is known about the associations between dietary patterns and specific anatomic subsites or molecular subtypes of CRC. METHODS We used multivariable Cox proportional hazards models to examine the associations between Western and prudent dietary patterns and CRC risk in the Health Professionals Follow-up Study and Nurses' Health Study. RESULTS After up to 32 years of follow-up of 137,217 men and women, we documented 3260 cases of CRC. Among individuals from whom subsite data were available, we observed 1264 proximal colon, 866 distal colon, and 670 rectal tumors. Western diet was associated with an increased incidence of CRC (Ptrend < .0001), with a relative risk (RR) of 1.31 (95% CI, 1.15-1.48, comparing the highest to lowest quartile). The association of Western diet with CRC was evident for tumors of the distal colon (RR, 1.55; 95% CI, 1.22-1.96; Ptrend = .0004) and rectum (RR, 1.35; 95% CI, 1.03-1.77; Ptrend = .01) but not proximal colon (RR, 1.11; 95% CI, 0.91-1.35; Ptrend = .51) when we comparing extreme quartiles. In contrast, for the prudent pattern, we observed a RR of 0.86 for overall CRC (95% CI, 0.77-0.95; Ptrend = .01), with similar trends at anatomic subsites. However, the trend appeared stronger among men than women. Among 1285 cases (39%) with tissue available for molecular profiling, Western diet appeared to be more strongly associated with some CRC molecular subtypes (no mutations in KRAS [KRAS wildtype] or BRAF [BRAF wildtype], no or a low CpG island methylator phenotype, and microsatellite stability), although formal tests for heterogeneity did not produce statistically significant results. CONCLUSIONS Western dietary patterns are associated with an increased risk of CRC, particularly distal colon and rectal tumors. Western dietary patterns also appear more strongly associated with tumors that are KRAS wildtype, BRAF wildtype, have no or a low CpG island methylator phenotype, and microsatellite stability. In contrast, prudent dietary patterns are associated with a lower risk of CRC that does not vary according to anatomic subsite or molecular subtype.
Electron microscopical study to assess the in vitro effects of the synthetic trioxolane OZ78 against the liver fluke, Fasciola hepatica

SUMMARY Adult Fasciola hepatica were incubated for 48 h in vitro in the synthetic peroxide, OZ78 at a concentration of 100 μg/ml and then prepared for scanning and transmission electron microscopy. There was limited disruption to the external fluke surface, with only slight swelling and blebbing of the interspinal tegument in the midbody and ventral tail regions. By contrast, significant disruption was observed to the ultrastructure of the tegument and subtegumental tissues. There was severe swelling of the basal infolds in the tegumental syncytium and the flooding spread internally to affect the subtegumental tissues. In the tegumental system, there was swelling of the cisternae of granular endoplasmic reticulum and of the mitochondria, with the latter showing signs of breaking down. Autophagic vacuoles and lipid droplets were present and the synthesis of tegumental secretory bodies was much reduced. The gastrodermal cells were severely affected, with swelling and degeneration of the mitochondria and the presence of autophagic vacuoles and lipid droplets. The granular endoplasmic reticulum was swollen and vesiculated and the cells contained few secretory bodies. Both the vitelline and testis follicles showed evidence of extensive cellular disruption and degeneration. This study confirms previous data indicating the potential flukicidal activity of OZ78.
Lifetime Prevalence of Common Mental Disorders in Qatar: Using WHO Composite International Diagnostic Interview (WHO-CIDI)

Background : Mental Disorders, particularly Depression, are recognised as one of the biggest burden of disease worldwide. Two of the top three burdens of disease in Qatar are mental health related. Yet, this is scarcity of lifetime prevalence data available to understand the impact in this country. Aim : This study uses the WHO Composite International Diagnostic Interview (WHO-CIDI), to measure the lifetime prevalence of the most presenting mental disorders in the adult Qatari population, aged 18-65, and examine their symptom patterns and co-morbidity. Design : This is a cross sectional study conducted during the period from April 2010 to October 2011. Setting : Five Primary Health Care (PHC) Centres distributed around the country. Subjects : A total of 1,500 Qatari subjects aged 18 to 65 years were approached; 1,063 (70.8%) gave consent and participated in this study. Methods : Four field supervisors from Qatar were trained and certified as trainers by IDRAAC, the education and training centre responsible for the Arabic translation and validation of CIDI. Variations in Arabic dialect were reported to IDRAAC for verification and approval. In line with the World Health Organization (WHO) World Mental Health (WMH) Survey Initiative, a nationally representative psychiatric epidemiological survey was carried out in Qatar. Prevalence and severity of ICD-10 disorders were assessed with the WHO Composite International Diagnostic Interview (CIDI, Version 3.0). Results : Of the studied 1063 subjects, 50.1% were males and 49.9% were females. Most of the respondents were in the age group 18-34 years (46.1%), followed by 35-49 years (34.1%), then 50-65 years (19.8%). The most common ICD-10 disorders were specific generalized anxiety disorders (20.4)%, and major depression (19.1%), with a higher prevalence in women. 20.6% of the sample had chronic physical conditions. There were high levels of statistically significant differences between age groups and gender regarding Generalized Anxiety Disorders, Social phobia, specific phobia, major depression, and personality disorders screen. Women performed significantly worse as assessed by the 30 day functioning screen (p < 0.001). Conclusion : The findings of this study in lifetime prevalence of mental disorders in Qatar are comparable with international figures. Women were more likely than men to have mental illness. Overall, Generalized Anxiety Disorders; Social phobia, specific phobia, major depression, and personality disorders were the commonest disorders.
Cucumispora dikerogammari n. gen. (Fungi: Microsporidia) infecting the invasive amphipod Dikerogammarus villosus: a potential emerging disease in European rivers

SUMMARY Dikerogammarus villosus is an invasive amphipod that recently colonized the main rivers of Central and Western Europe. Two frequent microsporidian parasites were previously detected in this species, but their taxonomic status was unclear. Here we present ultrastructural and molecular data indicating that these two parasites are in fact a single microsporidian species. This parasite shares numerous characteristics of Nosema spp. It forms elongate spores (cucumiform), developing in direct contact with host cell cytoplasm; all developmental stages are diplokaryotic and the life cycle is monomorphic with disporoblastic sporogony. Initially this parasite was described as Nosema dikerogammariOvcharenko and Kurandina 1987. However, phylogenetic analysis based on the complete sequence of SSU rDNA places the parasite outside the genus Nosema and it is therefore ascribed to a new genus Cucumispora. The key features characteristic to this genus are: presence of a very well-developed, umbrella-shape anchoring disk covering the anterior part of polaroplast; arrangement of isofilar polar filament into 6–8 coils convoluted with different angles, voluminous diplokaryon, thin spore wall and relatively small posterior vacuole containing posterosome. The parasite infects most host tissues but mainly muscles. It showed high rates of horizontal trophic transmission and lower rates of vertical transmission.
Occupational Stress, Burnout, and Professional Support in Nurses Working with Dying Patients

Nurses working with dying people are exposed to numerous stress factors. Their occupational stress may be so important as to lead to burnout. The aim of the present study is to examine the relationship among occupational stress, burnout, and professional support in nurses working with patients dying from cancer. The study has taken place in four palliative care and three medical oncology units of the Montreal metropolitan region. In all, seventy-six nurses of the N nurses fitting the entrance criteria of the study were selected. Participants completed a French version of the following instruments: the Occupational Stress of Nurses Working with Dying Patients, the Jones Staff Burnout Scale for Health Professionals and the Professional Support Scale. Results indicate that there is a significant relationship between occupational stress and burnout (r = 0.462, p < 0.001) and between professional support and burnout (r = −0.449, p < 0.001). Further, the results showed that the level of occupational stress and burnout was significantly lower for the palliative care nurses who received significantly more professional support than their colleagues working in medical oncology units. Professional support and training for nurses working with patients dying from cancer should be implemented in order to minimize the development of burnout.
Dilated Virchow–Robin spaces and parkinsonism

The images are from a 44-year old woman with facial dystonia, chin tremor, and a postural and action-induced dystonic tremor of the right hand. She had severe hypomimia, accompanied by bradykinesia and cogwheel rigidity in both upper and lower extremities. Gait was slow, with small steps. A: Dilated Virchow–Robin spaces along the lenticulostriate vessels in the basal ganglia and the medullary -----------------------------------------------------------*Correspondence to: Dr. Kapil D. Sethi, Professor & Director, Movement Disorders, Department of Neurology, Medical College of Georgia, Augusta, GA 30912, USA; ksethi@georgiahealth.edu
Percutaneous Radiofrequency Ablation of the Splanchnic Nerves in Patients with Chronic Pancreatitis: Results of Single and Repeated Procedures in 11 Patients

Pain is a major problem for chronic pancreatitis (CP) patients. Unfortunately, medical therapy often fails. Endoscopic and surgical treatments are invasive, and results vary. Percutaneous radiofrequency ablation of the splanchnic nerves (RFSN) is a relatively new and minimally invasive procedure for treatment of intractable pain in CP patients.
Correction of Hirschsprung-Associated Mutations in Human Induced Pluripotent Stem Cells Via Clustered Regularly Interspaced Short Palindromic Repeats/Cas9, Restores Neural Crest Cell Function.

BACKGROUND & AIMS Hirschsprung disease is caused by failure of enteric neural crest cells (ENCCs) to fully colonize the bowel, leading to bowel obstruction and megacolon. Heterozygous mutations in the coding region of the RET gene cause a severe form of Hirschsprung disease (total colonic aganglionosis). However, 80% of HSCR patients have short-segment Hirschsprung disease (S-HSCR), which has not been associated with genetic factors. We sought to identify mutations associated with S-HSCR, and used the clustered regularly interspaced short palindromic repeats (CRISPR)/Cas9 gene editing system to determine how mutations affect ENCC function. METHODS We created induced pluripotent stem cell (iPSC) lines from 1 patient with total colonic aganglionosis (with the G731del mutation in RET) and from 2 patients with S-HSCR (without a RET mutation), as well as RET+/- and RET-/- iPSCs. IMR90-iPSC cells were used as the control cell line. Migration and differentiation capacities of iPSC-derived ENCCs were analyzed in differentiation and migration assays. We searched for mutation(s) associated with S-HSCR by combining genetic and transcriptome data from patient blood- and iPSC-derived ENCCs, respectively. Mutations in the iPSCs were corrected using the CRISPR/Cas9 system. RESULTS ENCCs derived from all iPSC lines, but not control iPSCs, had defects in migration and neuronal lineage differentiation. RET mutations were associated with differentiation and migration defects of ENCCs in vitro. Genetic and transcriptome analyses associated a mutation in the vinculin gene (VCL M209L) with S-HSCR. CRISPR/Cas9 correction of the RET G731del and VCL M209L mutations in iPSCs restored the differentiation and migration capacities of ENCCs. CONCLUSIONS We identified mutations in VCL associated with S-HSCR. Correction of this mutation in iPSC using CRISPR/Cas9 editing, as well as the RET G731del mutation that causes Hirschsprung disease with total colonic aganglionosis, restored ENCC function. Our study demonstrates how human iPSCs can be used to identify disease-associated mutations and determine how they affect cell functions and contribute to pathogenesis.
Ligula intestinalis (Cestoda: Pseudophyllidea): an ideal fish-metazoan parasite model?

SUMMARY Since its use as a model to study metazoan parasite culture and in vitro development, the plerocercoid of the tapeworm, Ligula intestinalis, has served as a useful scientific tool to study a range of biological factors, particularly within its fish intermediate host. From the extensive long-term ecological studies on the interactions between the parasite and cyprinid hosts, to the recent advances made using molecular technology on parasite diversity and speciation, studies on the parasite have, over the last 60 years, led to significant advances in knowledge on host-parasite interactions. The parasite has served as a useful model to study pollution, immunology and parasite ecology and genetics, as well has being the archetypal endocrine disruptor.
Genotype and subtype analysis of Cryptosporidium isolates from calves and lambs in Galicia (NW Spain)

SUMMARY Faecal specimens from diarrhoeic pre-weaned calves (n=61) and lambs (n=127) collected over a 1-year period (2008–2009) at 27 cattle and 28 sheep farms in Galicia (NW Spain) were examined for the presence of Cryptosporidium oocysts and positive specimens were selected for molecular examination. Overall, 30 calves (49·2%) and 39 lambs (30·7%) tested positive for Cryptosporidium by microscopy. PCR products of the SSU rRNA locus were obtained for 27 Cryptosporidium positive calf isolates and 23 lamb isolates. Restriction analyses generated profiles of C. parvum in all isolates except for 9 lamb specimens from 5 farms that yielded banding patterns and sequences indicative of the Cryptosporidium cervine genotype. Sequence analyses of the glycoprotein (GP60) gene revealed that all but 1 C. parvum isolate from calves belonged to the subtype IIaA15G2R1 and 1 isolate was identified as the novel subtype IIaA13G1R1. Two different subtypes were identified in sheep flocks including IIaA16G3R1, which was seen in 7 lamb isolates from a single farm and subtype IIaA15G2R1, identified in 3 isolates from 2 farms. These findings suggest a limited genetic diversity within C. parvum in ruminant livestock from this geographical area, although both calves and lambs should be considered as a reservoir for zoonotic subtypes.
Acute complications of movement disorders surgery: Effects of age and comorbidities

The most common indication for movement disorder surgery is Parkinson's disease (PD), and the incidence of PD increases with age. The analysis reported here was undertaken with the primary goal of examining whether there is a relationship between peri‐operative complications and age. The Nationwide Inpatient Sample (Agency for Healthcare Research and Quality, Rockville, MD, USA) was queried for 10 years beginning in 1999 for patients undergoing deep brain stimulator insertion, pallidotomy, and thalamotomy for treatment of PD, essential tremor, and dystonia. Inpatient complications, including death, stroke (both ischemic and hemorrhagic), and other overall complications were examined. The relative risks associated with advanced age; primary diagnosis; treatment modality; the diagnoses of hypertension, diabetes, and nicotinism; and the cumulative number of comorbidities were examined. There were 5464 patients who met inclusion criteria, including 4145 patients treated for PD and 4961 patients treated with deep brain stimulation (DBS). Overall in‐hospital mortality was 0.26%, with 0.15% related to surgical factors. There was a correlation between in‐hospital mortality, increasing age, and number of medical comorbidities. After multivariate regression no factor remained predictive of mortality. Having more than 1 medical comorbidity or PD increased the risk of in‐hospital complications. Patients with PD were more likely to suffer hemorrhage or stroke. Hypertension, diabetes, nicotinism, and modality of treatment were not associated with increased mortality, hemorrhage or stroke risk, or in‐hospital mortality in univariate or multivariate analysis. Both age and medical comorbidity are correlated with in‐hospital complications, but age appears to serve as a surrogate for comorbidity. Surgery for PD appears to carry an increased risk of hemorrhage or stroke and in‐hospital complications. © 2013 International Parkinson and Movement Disorder Society
Quantification of cerebellar hemispheric purkinje cell linear density: 32 ET cases versus 16 controls

Although essential tremor (ET) is among the most prevalent neurological diseases, its precise pathogenesis is not understood. Purkinje cell loss has been observed in some studies and is the focus of interest and debate. Expressing these data as Purkinje cells/layer length allows one to adjust for the inherent curved nature of the cerebellar folia. Capitalizing on the Essential Tremor Centralized Brain Repository, we quantified Purkinje cell linear density in cases versus controls. Free‐floating 100‐μm parasagittal cerebellar hemispheric sections were subjected to rabbit polyclonal anti‐Calbindin D28k antibody, and 10 random fields/brain were selected for quantification of Purkinje cells/mm−1 Purkinje cell layer. Purkinje cell linear density was lower in 32 ET cases than in16 controls (1.14 ± 0.32 vs. 1.35 ± 0.31/mm−1, P = 0.03). Purkinje cell linear density was inversely associated with torpedo count (r = −0.38, P = 0.028). The current sample of ET cases demonstrates a reduction in Purkinje cell number relative to that of controls. Greater Purkinje cell axonal remodeling (torpedoes) was found in individuals who had the most Purkinje cell drop out. The role of Purkinje cell loss in the pathogenesis of this disorder merits additional study. © 2013 International Parkinson and Movement Disorder Society