Surveillance pouchoscopy for dysplasia: Cleveland Clinic Ileoanal Pouch Anastomosis Database.

BACKGROUND: No formal guidelines exist for surveillance pouchoscopy following ileal pouch-anal anastomosis (IPAA) for ulcerative colitis. METHODS: All adults who had previously had IPAA for ulcerative colitis, and underwent a pouchoscopy between 1 January 2010 and 1 January 2020, were included. RESULTS: A total of 9398 pouchoscopy procedures were performed in 3672 patients. The majority of the examinations were diagnostic (8082, 86·0 per cent; 3260 patients) and the remainder were for routine surveillance (1316, 14·0 per cent; 412 patients). Thirteen patients (0·14 per cent of procedures) were found to have biopsy-proven neoplasia at the time of pouchoscopy; seven had low-grade dysplasia (LGD) (0·07 per cent; all located in the anal transition zone), none had high-grade dysplasia (HGD) and six (0·06 per cent) had invasive adenocarcinoma (4 in anal transition zone and 6 in pouch). Of the six patients with adenocarcinoma, four had neoplasia at the time of proctocolectomy (2 adenocarcinoma, 1 LGD, 1 HGD); all six were symptomatic with anal bleeding or pelvic pain at the time of pouchoscopy, had a negative surveillance pouchoscopy examination within 2 years of diagnosis of adenocarcinoma, had palpable masses on digital rectal examination, and had visible lesions at the time of pouchoscopy. CONCLUSION: Surveillance pouchoscopy is not recommended in asymptomatic patients because significant neoplasia following IPAA for ulcerative colitis is rare.

ANTECEDENTES: No existen unas recomendaciones formales para vigilancia endoscópica en pacientes a los que se les ha realizado un reservorio ileoanal (ileal pouch anal anastomosis, IPAA) por una colitis ulcerosa (ulcerative colitis, UC). MÉTODOS: Se incluyeron todos los pacientes adultos a los que se les había realizado previamente un IPAA por UC y se sometieron a una endoscopia del reservorio. RESULTADOS: Se realizaron un total de 9.398 procedimientos endoscópicos en 3.672 pacientes entre el 1/1/2010 y el 1/1/2020. La mayoría de las exploraciones fueron diagnósticas (n = 8.082; 86%; 3.260 pacientes) y el resto fueron de seguimiento (n = 1.316; 14%; 412 pacientes). Se descubrió que 13 pacientes tenían una neoplasia demostrada por biopsia (0,14%) en el momento de la endoscopia; siete pacientes tenían displasia de bajo grado (low-grade displasia, LGD) (0,074%; localizada en todos los casos en la zona de transición anal), ninguno tenía displasia de alto grado (high-grade displasia, HGD) y seis (0,064%) tenían un adenocarcinoma invasivo (cuatro en la zona de transición anal) y dos en el reservorio). De los seis pacientes con adenocarcinoma, 4 tenían neoplasia en el momento de la proctocolectomía (2 adenocarcinoma, uno LGD, uno HGD). Todos estos pacientes tenían síntomas de hemorragia anal o dolor pélvico en el momento de la endoscopia, se les había practicado una endoscopia previa reciente del reservorio en los dos años anteriores, presentaban una masa palpable en la exploración digital rectal, así como lesiones visibles en la endoscopia del reservorio. CONCLUSIÓN: La vigilancia endoscópica del reservorio no se recomienda en pacientes asintomáticos porque es raro que aparezca una neoplasia después del IPAA por UC.

A Contemporary Picture of Enterococcal Endocarditis.

BACKGROUND: Enterococcal endocarditis (EE) is a growing entity in Western countries. However, quality data from large studies is lacking. OBJECTIVES: The purpose of this study was to describe the characteristics and analyze the prognostic factors of EE in the GAMES cohort. METHODS: This was a post hoc analysis of a prospectively collected cohort of patients from 35 Spanish centers from 2008 to 2016. Characteristics and outcomes of 516 cases of EE were compared with those of 3,308 cases of nonenterococcal endocarditis (NEE). Logistic regression and Cox proportional hazards regression analysis were performed to investigate risk factors for in-hospital and 1-year mortality, as well as relapses. RESULTS: Patients with EE were significantly older; more frequently presented chronic lung disease, chronic heart failure, prior endocarditis, and degenerative valve disease; and had higher median age-adjusted Charlson score. EE more frequently involved the aortic valve and prosthesis (64.3% vs. 46.7%; p < 0.001; and 35.9% vs. 28.9%; p = 0.002, respectively) but less frequently pacemakers/defibrillators (1.5% vs. 10.5%; p < 0.001), and showed higher rates of acute heart failure (45% vs. 38.3%; p = 0.005). Cardiac surgery was less frequently performed in EE (40.7% vs. 45.9%; p = 0.024). No differences in in-hospital and 1-year mortality were found, whereas relapses were significantly higher in EE (3.5% vs. 1.7%; p = 0.035). Increasing Charlson score, LogEuroSCORE, acute heart failure, septic shock, and paravalvular complications were risk factors for mortality, whereas prior endocarditis was protective and persistent bacteremia constituted the sole risk factor for relapse. CONCLUSIONS: Besides other baseline and clinical differences, EE more frequently affects prosthetic valves and less frequently pacemakers/defibrillators. EE presents higher rates of relapse than NEE.

Opioid Analgesics Do Not Improve Abdominal Pain or Quality of Life in Crohn's Disease.

BACKGROUND: Abdominal pain and opioid analgesic use are common in Crohn's disease (CD). AIMS: We sought to identify factors associated with abdominal pain in CD and evaluate the impact of opioid analgesics on pain and quality-of-life scores in this setting. METHODS: We performed a longitudinal cohort study using a prospective, consented IBD natural history registry from a single academic center between 2009 and 2013. Consecutive CD patients were followed for at least 1 year after an index visit. Data were abstracted regarding pain experience (from validated surveys), inflammatory activity (using endoscopic/histologic findings), laboratory studies, coexistent psychiatric disorders, medical therapy, opioid analgesic, and tobacco use. RESULTS: Of 542 CD patients (56.6% women), 232 (42.8%) described abdominal pain. Individuals with pain were more likely to undergo surgery and were more frequently prescribed analgesics and/or antidepressants/anxiolytics. Elevated ESR (OR 1.79; 95%CI 1.11-2.87), coexistent anxiety/depression (OR 1.87; 95%CI 1.13-3.09), smoking (OR 2.08; 95%CI 1.27-3.40), and opioid use (OR 2.46; 95%CI 1.33-4.57) were independently associated with abdominal pain. Eighty patients (14.8%) were prescribed opioids, while 31 began taking them at or after the index visit. Patients started on opioids demonstrated no improvement in abdominal pain or quality-of-life scores on follow-up compared to patients not taking opioids. CONCLUSIONS: Abdominal pain is common in CD and is associated with significant opioid analgesic utilization and increased incidence of anxiety/depression, smoking, and elevated inflammatory markers. Importantly, opioid use in CD was not associated with improvement in pain or quality-of-life scores. These findings reinforce the limitations of currently available analgesics in IBD and support exploration of alternative therapies.

Effect of early shearing during gestation on the productive and reproductive behavior of female sheep offspring in their first 18 months of age.

The research has shown the interesting contributions of shearing in mid-gestation on the performance of lambs from birth to weaning. Other studies have reported that shearing at early pregnancy influences the development of the placenta and lamb live weight at birth. However, there was a lack of information on the effect of early-prepartum shearing on the behavior of the offspring from weaning onward. This study evaluated the effect of shearing ewes at 50 days of gestation on the growth, reproductive behavior and response to a gastrointestinal parasite challenge in the female offspring from weaning to 18 months old. Fifty-seven Polwarth female lambs were used, 22 being singles and 35 twins born to ewes either shorn at 50 days of pregnancy (PS, n = 23) or shorn at 62 days postpartum (U, control, n = 34) resulting in four subgroups: single lambs born to PS ewes (n = 8), born to U ewes (n = 14), twin lambs born to PS ewes (n = 15) or born to U ewes (n = 20). All progeny were managed together under improved pasture with a minimum forage allowance of 6% live weight on dry basis. Body weight, body condition score and fecal eggs count were recorded every 14 days from weaning to 18 months of age. Concentrations of progesterone were measured weekly (from 4 to 10 months of age and from 14 to 18 months of age) to establish the onset of puberty. Ovulation rate at an induced and a natural heat (545 ± 1.0 and 562 ± 1.0 day old) was recorded. Prepartum shearing did not affect the age at puberty or the ovulation rate of female offspring, but those born as singles were more precocious ( P = 0.03) and heavier ( P = 0.02) at puberty than twin born lambs. Both the average value of parasite egg count ( P = 0.0 7) and the Famacha index ( P = 0.02) for the entire study period were lower in lambs born to prepartum shorn ewes than those born to postpartum shorn ewes. In conclusion, shearing at 50 days of gestation did not affect the growth or the reproductive behavior of female offspring. However, female lambs born from ewe shorn during gestation showed a better response to the parasitic challenge, and further research is required to confirm this.

High-pressure polymorphism of BaFe2Se3.

BaFe2Se3 is a potential superconductor material exhibiting transition at 11 K and ambient pressure. Here we extended the structural and performed electrical resistivity measurements on this compound up to 51 GPa and 20 GPa, respectively, in order to distinguish if the superconductivity in this sample is intrinsic to the BaFe2Se3 phase or if it is originating from minor FeSe impurities that show a similar superconductive transition temperature. The electrical resistance measurements as a function of pressure show that at 5 GPa the superconducting transition is observed at around 10 K, similar to the one previously observed for this sample at ambient pressure. This indicates that the superconductivity in this sample is most likely intrinsic to the BaFe2Se3 phase and not to FeSe with T c > 20 K at these pressures. Further increase in pressure suppressed the superconductive signal and the sample remained in an insulating state up to the maximum achieved pressure of 20 GPa. Single-crystal and powder x-ray diffraction measurements revealed two structural transformations in BaFe2Se3: a second order transition above 3.5 GPa from Pnma (CsAg2I3-type structure) to Cmcm (CsCu2Cl3-type structure) and a first order transformation at 16.6 GPa. Here, γ-BaFe2Se3 transforms into δ-BaFe2Se3 (Cmcm, CsCu2Cl3-type average structure) via a first order phase transition mechanism. This transition is characterized by a significant shortening of the b lattice parameter of γ-BaFe2Se3 (17%) and accompanied by an anisotropic expansion in the orthogonal ac plane at the transition point.

Deterioro cognitivo en población mayor de 60 años con alto riesgo social de la ciudad de Neuquén / Cognitive impairment in a population over 60 years of age with high social risk in the city of Neuquén

INTRODUCCIÓN La información sobre demencia y deterioro cognitivo es escasa en Argentina, particularmente en la Patagonia. OBJETIVOS Determinar la prevalencia de deterioro cognitivo en la ciudad de Neuquén. MÉTODOS Se realizó una encuesta puerta a puerta a todas las personas mayores de 60 años que vivían en un barrio de la ciudad de Neuquén con alto riesgo social. Se evaluaron variables geriátricas y cognitivas, incluyendo mini-mental, test del reloj y set test según el nivel de instrucción. RESULTADOS De las 78 encuestas evaluadas, la media de edad fue de 70,75 años, 37 de sexo femenino, con una escolaridad promedio de 4,37 años y un 33% de personas analfabetas funcionales. Se evidenció deterioro cognitivo en 29,49% de los pacientes, que aumentó con la edad y con el menor nivel de instrucción. DISCUSIÓN La prevalencia de deterioro cognitivo en la población evaluada fue más elevada que en otros estudios argentinos, hallazgo que estuvo asociado a un porcentaje de analfabetismo más alto que en otras jurisdicciones.

Clinical and demographic characteristics predictive of treatment outcomes for certolizumab pegol in moderate to severe Crohn's disease: analyses from the 7-year PRECiSE 3 study.

BACKGROUND: Clinical factors were previously identified as predictors of short-term treatment efficacy in Crohn's disease (CD). The PRECiSE 3 (P3) 7-year trial provides an opportunity to study predictors of short- and long-term clinical remission among CD patients treated with certolizumab pegol (CZP). AIM: To identify factors that influence long-term remission of CD with CZP treatment. METHODS: Patients who had completed placebo-controlled studies (PRECiSE 1/PRECiSE 2, P1/P2) enrolled in P3 and received open-label CZP 400 mg every 4 weeks up to 7 years. Baseline predictors included, but were not limited to, smoking status, disease duration, prior inflammatory bowel disease (IBD) surgery, Harvey-Bradshaw Index (HBI), albumin, haematocrit and CZP exposure; association with time to initial remission (HBI ≤4) was tested for patients who received CZP in P1/P2; time to loss of remission/frequency of maintenance of remission was also tested. Univariate analyses and multivariate Cox or logistic regression models were used. RESULTS: Predictors for initial remission (N = 377) included age, haematocrit, prior IBD surgery and entry HBI (P < 0.05 for all). Predictors for loss of remission (N = 437) included HBI, serum albumin concentration, haematocrit, smoking status and exposure. Predictors of maintenance of remission (N = 437) included haematocrit, IBD surgery, HBI, disease duration, serum albumin concentration and exposure. Significant predictors were confirmed with stepwise multivariate regression models. CONCLUSIONS: These analyses identified several influential parameters for short-and long-term remission of Crohn's disease with certolizumab pegol treatment. The data yield valuable hypotheses regarding factors that influence certolizumab pegol treatment. More investigation is needed. (ClinicalTrials.gov identifier NCT00552058).

Sub-acute and chronic MRI findings in bilateral canine fibrotic contracture of the infraspinatus muscle.

A six-year-old, 30-kg female German pointer dog was presented for examination with a history of pre-existing right-forelimb lameness and more recent (3 months) persistent lameness in the left-forelimb. Physical examination revealed mild left-forelimb lameness and a mild circumduction movement. There were no signs of pain or crepitation detected during manipulation of the shoulders, but the animal was unable to fully flex both glenohumeral joints. Magnetic resonance imaging, using fast recovery fast spin echo T2-weighted and fat saturated proton density sequences, revealed abnormal heterogeneous hypointensity in the right infraspinatus muscle and a heterogeneous hyperintense area in the left infraspinatus muscle. Surgical treatment consisting of a bilateral infraspinatus tenectomy resulted in improved limb function. Histopathological examination demonstrated tissue changes in the right infraspinatus, characterised by myofibre degeneration and fibrosis, compatible with a chronic degenerative process, while changes in the left infraspinatus muscle were characterised by variable degrees of fibre degeneration, haemorrhage and interstitial oedema.

Maximizing the effect of biologics in inflammatory bowel disease.

The chronic course of inflammatory bowel disease (IBD) leads to recurrent episodes of active clinical symptoms, as well as long term complications, including hospitalizations, surgeries, and a decreased quality of life. Biologic agents have been shown to be effective for the induction and maintenance of remission in patients with moderate to severe IBD, and may alter the natural history of disease. Loss of response to biologic therapy is a common problem in clinical practice, the reasons for which are likely multifactorial; antibody development, alterations in drug clearance, and possibly a change to a non-TNF-driven inflammatory mechanism. Several studies have evaluated interventions that may lead to an increased rate of response and an increase in the durability. In this review, we evaluate ways to maximize anti-TNF treatment by administering scheduled therapy, using concomitant immunomodulator therapy, escalating dosage, and switching between biologic agents and classes. Finally, the role of antibody to infliximab (ATI) and infliximab serum trough levels are discussed in the context of optimizing biologic therapy for inflammatory bowel disease.

Amino acid position 11 of HLA-DRß1 is a major determinant of chromosome 6p association with ulcerative colitis.

The major histocompatibility complex (MHC) on chromosome 6p is an established risk locus for ulcerative colitis (UC) and Crohn's disease (CD). We aimed to better define MHC association signals in UC and CD by combining data from dense single-nucleotide polymorphism (SNP) genotyping and from imputation of classical human leukocyte antigen (HLA) types, their constituent SNPs and corresponding amino acids in 562 UC, 611 CD and 1428 control subjects. Univariate and multivariate association analyses were performed, controlling for ancestry. In univariate analyses, absence of the rs9269955 C allele was strongly associated with risk for UC (P = 2.67 × 10(-13)). rs9269955 is a SNP in the codon for amino acid position 11 of HLA-DRß1, located in the P6 pocket of the HLA-DR antigen binding cleft. This amino acid position was also the most significantly UC-associated amino acid in omnibus tests (P = 2.68 × 10(-13)). Multivariate modeling identified rs9269955-C and 13 other variants in best predicting UC vs control status. In contrast, there was only suggestive association evidence between the MHC and CD. Taken together, these data demonstrate that variation at HLA-DRß1, amino acid 11 in the P6 pocket of the HLA-DR complex antigen binding cleft is a major determinant of chromosome 6p association with UC.

Austronesian genetic signature in East African Madagascar and Polynesia.

The dispersal of the Austronesian language family from Southeast Asia represents the last major diaspora leading to the peopling of Oceania to the East and the Indian Ocean to the West. Several theories have been proposed to explain the current locations, and the linguistic and cultural diversity of Austronesian populations. However, the existing data do not support unequivocally any given migrational scenario. In the current study, the genetic profile of 15 autosomal STR loci is reported for the first time for two populations from opposite poles of the Austronesian range, Madagascar at the West and Tonga to the East. These collections are also compared to geographically targeted reference populations of Austronesian descent in order to investigate their current relationships and potential source population(s) within Southeast Asia. Our results indicate that while Madagascar derives 66.3% of its genetic makeup from Africa, a clear connection between the East African island and Southeast Asia can be discerned. The data suggest that although geographic location has influenced the phylogenetic relationships between Austronesian populations, a genetic connection that binds them beyond geographical divides is apparent.

Male amelogenin dropouts: phylogenetic context, origins and implications.

Several commercial PCR multiplex kits incorporate the amelogenin locus for the purpose of human gender identification. Consequently, erroneous results in the electropherogram profile of this locus can carry important forensic implications. In this study, dropout of the amelogenin Y allele was detected in 5 out of 77 phenotypically normal Kathmandu males using the AmpFlSTR Identifiler kit. A battery of male-specific markers including SNPs, STRs, STSs, and a minisatellite were amplified for the five amelogenin null samples in order to delineate the breakpoints of the deletions as well as assess the overall integrity of the Y-chromosome. This study represents the first to examine the haplogroup affiliation of the AMGY deletions. The analyses performed suggest a single origin for the five deletions as indicated by their allocation to a specific Y-haplogroup (J2b2-M241), related Y-STR haplotypes and identical regional localization of breakpoints. The age estimated from the microsatellite variation for the amelogenin deletions (if they are associated by descent) is approximately 6.5+/-3.3 ky, younger than the previously reported related age of the M241 haplogroup representatives (13-14 ky). Our data in combination with previous publications suggest a concentration of afflicted individuals in the Indian subcontinent, possibly as a result of common ancestry. The elevated incidence of the amelogenin dropout in these populations accentuates the need to utilize other loci for gender determination in order to obtain an accurate set of inclusion criteria in forensic casework.

Tomonaga-Luttinger liquid and Coulomb blockade in multiwall carbon nanotubes under pressure.

We report that the conductance of macroscopic multiwall nanotube (MWNT) bundles under pressure shows power laws in temperature and voltage, as corresponding to a network of bulk-bulk connected Tomonaga-Luttinger liquids (LLs). Contrary to individual MWNTs, where the observed power laws are attributed to Coulomb blockade, the measured ratio for the end and bulk obtained exponents, approximately 2.4, can be accounted for only by LL theory. At temperatures characteristic of interband separation, it increases due to thermal population of the conducting sheets unoccupied bands.

Insuficiencia cardíaca. Diagnóstico insuficiente / Heart failure. Insuficient diagnostic

No disponible

Iran: tricontinental nexus for Y-chromosome driven migration.

Due to its pivotal geographic position, present day Iran likely served as a gateway of reciprocal human movements. However, the extent to which the deserts within the Iranian plateau and the mountain ranges surrounding Persia inhibited gene flow via this corridor remains uncertain. In order to assess the magnitude of this region's role as a nexus for Africa, Asia and Europe in human migrations, high-resolution Y-chromosome analyses were performed on 150 Iranian males. Haplogroup data were subsequently compared to regional populations characterized at similar phylogenetic levels. The Iranians display considerable haplogroup diversity consistent with patterns observed in populations of the Middle East overall, reinforcing the notion of Persia as a venue for human disseminations. Admixture analyses of geographically targeted, regional populations along the latitudinal corridor spanning from Anatolia to the Indus Valley demonstrated contributions to Persia from both the east and west. However, significant differences were uncovered upon stratification of the gene donors, including higher proportions from central east and southeast Turkey as compared to Pakistan. In addition to the modulating effects of geographic obstacles, culturally mediated amalgamations consistent with the diverse spectrum of a variety of historical empires may account for the distribution of haplogroups and lineages observed. Our study of high-resolution Y-chromosome genotyping allowed for an in-depth analysis unattained in previous studies of the area, revealing important migratory and demographic events that shaped the contemporary genetic landscape.

Pressure control of conducting channels in single-wall carbon nanotube networks.

We measure electrical transport on networks of single-wall nanotube ropes as a function of temperature T, voltage V, and pressure up to 22 GPa. We observe Luttinger liquid (LL) behavior, a conductance proportional to T(alpha), and a dynamic conductance proportional to V(alpha). With pressure, conductance increases while alpha decreases, enabling us to test the theoretical prediction for LL behavior on the alpha dependence of the T and V independent coefficient of the tunneling conductance, and to obtain the high frequency cutoff of LL modes. The possible transition to a Fermi liquid at alpha-->0 is unattainable, as nanotubes collapse to an insulating state at high pressures.

[Controversies in infective endocarditis]. / Controversias en endocarditis infecciosas.

The infective endocarditis is defined mainly as the infection of the internal surface of the heart, affecting to the cardiac valves although it can also do it to the septos, the tendinosas cords or endocardio mural. Around the origin, the diagnosis and the treatment of the disease, a considerable controversy has taken place. In this sense, basic criteria exist that they define to the infective endocarditis; however, particular situations are appraised in which the meticulous study is essential from the patient, doing special reference to the origin agents and, more in particular, to the fungal endocarditis.

Controversias en endocarditis infecciosas / Controversies in efective endocarditis

La endocarditis infecciosa se define como la infección de la superficie interna del corazón que afecta principalmente a las válvulas cardíacas aunque también lo puede hacer a los septos, las cuerdas tendinosas o el endocardio mural. Se ha producido una gran controversia en torno a la etiología, diagnóstico y tratamiento de la enfermedad. En este sentido, existen criterios básicos que definen a la endocarditis infecciosa; sin embargo aparecen situaciones particulares en las que resulta imprescindible un estudio minucioso, haciendo especial referencia a los agentes etiológicos y más concretamente a la endocarditis fúngica

The infective endocarditis is defined mainly as the infection of the internal surface of the heart, affecting to the cardiac valves although it can also do it to the septos, the tendinosas cords or endocardio mural. Around the origin, the diagnosis and the treatment of the disease, a considerable controversy has taken place. In this sense, basic criteria exist that they define to the infective endocarditis; however, particular situations are appraised in which the meticulous study is essential from the patient, doing special reference to the origin agents and, more in particular, to the fungal endocarditis

The importance of histology in the evaluation of pulmonary transplantation: carcinomatous lymphangitis.

Pulmonary carcinomatous lymphangitis is a form of neoplastic metastatic spread to the lungs, which represents a poor prognosis for the patient. The physician may be confronted by a differential diagnosis with diffuse pulmonary interstitial affections requiring specific treatment, including lung transplantation. We present the case of a patient, diagnosed with pulmonary interstitial disease with rapidly progressive worsening of lung function, who was considered for lung transplantation. Videothoracoscopic lung biopsy demonstrated the existence of carcinomatous lymphangitis, which completely changed the therapeutic direction.