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1.
Orthopedics ; : 1-6, 2024 Sep 04.
Artículo en Inglés | MEDLINE | ID: mdl-39208397

RESUMEN

BACKGROUND: The STOP questionnaire was developed to document reasons for discontinuation of growth-friendly (GF) treatment in early onset scoliosis (EOS). This study investigated the incidence of parental request (PR) on the STOP questionnaire and compared clinical information and Early Onset Scoliosis 24-Item Questionnaire (EOSQ-24) scores of PR patients with those whose parents did not request discontinuation (non-parent request [NPR]). MATERIALS AND METHODS: An international pediatric spine registry was queried for EOS patients with STOP questionnaires completed by their surgeon. Age at discontinuation, sex, and EOS etiology were recorded. GF device, number of surgical procedures, complications, STOP questionnaire reasons for discontinuation, and definitive treatment were recorded. EOSQ-24 scores and clinical information in the PR cohort were compared with the NPR cohort. RESULTS: Data for 1326 patients were analyzed. PR was listed on the STOP questionnaires of 46 (3.5%) patients, completed at a mean age of 12 years (SD, 3.2 years). There were no statistical differences in number of procedures or complications when comparing the PR cohort with the NPR cohort. PR patients more frequently had neuromuscular EOS (P=.002), more frequently were treated with magnetically controlled growing rods (33% vs 14%, P=.036), and more frequently were observed after GF discontinuation (P=.628). EOSQ-24 scores for the PR cohort were significantly lower in most domains except pain/discomfort. CONCLUSION: For 3.5% of the EOS patients, PR was listed on the STOP questionnaire. They frequently had neuromuscular EOS and frequently were treated with magnetically controlled growing rods. Additionally, these patients had statistically lower EOSQ-24 scores across most domains. [Orthopedics. 20XX;4X(X):XXX-XXX.].

2.
Trop Med Infect Dis ; 9(8)2024 Aug 17.
Artículo en Inglés | MEDLINE | ID: mdl-39195621

RESUMEN

Neglected Tropical Diseases (NTDs) are a group of chronic infectious diseases of poverty affecting over one billion people globally. Intersections of NTDs, disability, and mental ill-health are increasingly evidenced but are rarely studied from a mixed-methods perspective. Here, we advance syndemic understandings by further assessing and contextualising the syndemic relationship between NTDs (particularly their associated disability) and mental distress in Liberia. Participatory qualitative methods, including body mapping (56 participants), social mapping (28 participants), and in-depth interviews (12) provided space for persons affected by NTDs to narrate their experiences. Simultaneously, 201 surveys explored experiences of common mental health conditions among persons affected by skin NTDs. An intersectionality approach was applied within the analysis for both qualitative and quantitative methods informed by Meyer's minority stress model, adapted for NTDs. Qualitative data was analysed thematically and gender-disaggregated, univariable and multivariable analyses were applied to survey data for the outcome measures depression (PHQ-9) and anxiety (GAD-7). Disability was associated with higher levels of depression and anxiety (p < 0.001). An interaction between disability and being a women increased incidence risk ratio of depression (p < 0.001). In alignment with qualitative findings, persons affected experienced additional generalised (financial concerns), external (experience of stigma) and internal (experience of pain and physical symptoms) minority stressors, to varying degrees, which contributed towards their mental distress, and mental health conditions. These findings were used to co-develop a syndemic-informed person-centred health system response to address the suffering associated with NTDs and mental distress, including a focus on strengthening relationships between formal and informal community health actors and the broader health system.

3.
Nutrients ; 16(13)2024 Jun 26.
Artículo en Inglés | MEDLINE | ID: mdl-38999770

RESUMEN

Emerging evidence suggests that personalized dietary supplement regimens can significantly influence lipid metabolism and cardiovascular risk. The efficacy of AI-guided dietary supplement prescriptions, compared with standard physician-guided prescriptions, remains underexplored. In a randomized, parallel-group pilot study, 70 patients aged 40-75 years with LDL-C levels between 70 and 190 mg/dL were enrolled. Participants were randomized to receive either AI-guided dietary supplement prescriptions or standard physician-guided prescriptions for 90 days. The primary endpoint was the percent change in LDL-C levels. Secondary endpoints included changes in total cholesterol, HDL-C, triglycerides, and hsCRP. Supplement adherence and side effects were monitored. Sixty-seven participants completed the study. The AI-guided group experienced a 25.3% reduction in LDL-C levels (95% CI: -28.7% to -21.9%), significantly greater than the 15.2% reduction in the physician-guided group (95% CI: -18.5% to -11.9%; p < 0.01). Total cholesterol decreased by 15.4% (95% CI: -19.1% to -11.7%) in the AI-guided group compared with 8.1% (95% CI: -11.5% to -4.7%) in the physician-guided group (p < 0.05). Triglycerides were reduced by 22.1% (95% CI: -27.2% to -17.0%) in the AI-guided group versus 12.3% (95% CI: -16.7% to -7.9%) in the physician-guided group (p < 0.01). HDL-C and hsCRP changes were not significantly different between groups. The AI-guided group received a broader variety of supplements, including plant sterols, omega-3 fatty acids, red yeast rice, coenzyme Q10, niacin, and fiber supplements. Side effects were minimal and comparable between groups. AI-guided dietary supplement prescriptions significantly reduce LDL-C and triglycerides more effectively than standard physician-guided prescriptions, highlighting the potential for AI-driven personalization in managing hypercholesterolemia.


Asunto(s)
LDL-Colesterol , Suplementos Dietéticos , Humanos , Persona de Mediana Edad , Proyectos Piloto , Masculino , Femenino , Anciano , LDL-Colesterol/sangre , Adulto , Hipercolesterolemia/sangre , Hipercolesterolemia/tratamiento farmacológico , Triglicéridos/sangre , Resultado del Tratamiento , HDL-Colesterol/sangre
4.
Artículo en Inglés | MEDLINE | ID: mdl-38864265

RESUMEN

STUDY DESIGN: Retrospective, Multicenter. OBJECTIVE: Assess curve progression and occurrence of revision surgery following tether breakage after vertebral body tethering (VBT). SUMMARY OF BACKGROUND DATA: Tether breakage after VBT is common with rates up to 50% reported. In these cases, it remains unknown whether the curve will progress or remain stable. METHODS: Adolescent and juvenile idiopathic scoliosis patients in a multicenter registry with ≥2 year-follow-up after VBT were reviewed. Broken tethers were listed as postoperative complications and identified by increased screw divergence of >5° on serial radiographs. Revision procedures and curve magnitude at subsequent visits were recorded. RESULTS: Of 186 patients who qualified for inclusion, 84 (45.2%) patients with tether breakage were identified with a mean age at VBT of 12.4±1.4 years and mean curve magnitude at index procedure of 51.8°±8.1°. Tether breakage occurred at a mean of 30.3±11.8 months and mean curve of 33.9°±13.2°. Twelve patients (12/84, 14.5%) underwent 13 revision procedures after VBT breakage, including 6 tether revisions and 7 conversions to fusion. All tether revisions occurred within 5 months of breakage identification. No patients with curves <35° after breakage underwent revision. Revision rate was greatest in skeletally immature (Risser 0-3) patients with curves ≥35° at time of breakage (Risser 0-3: 9/17, 53% vs. Risser 4-5: 3/23, 13%, P=0.01).Curves increased by 3.1° and 3.7° in the first and second year, respectively. By two years, 15/30 (50%) progressed >5° and 8/30 (26.7%) progressed greater than 10°. Overall, 66.7% (40/60) reached a curve magnitude >35° at their latest follow-up, and 14/60 (23.3%) reached a curve magnitude greater than 45°. Skeletal maturity did not affect curve progression after tether breakage (P>0.26), but time to rupture did (P=0.048). CONCLUSION: While skeletal immaturity and curve magnitude were not independently associated with curve progression, skeletally immature patients with curves ≥35° at time of rupture are most likely to undergo additional surgery. Most patients can expect progression at least 5° in the first two years after tether breakage, though longer-term behavior remains unknown. LEVEL OF EVIDENCE: III.

5.
Spine Deform ; 2024 Jun 10.
Artículo en Inglés | MEDLINE | ID: mdl-38858335

RESUMEN

PURPOSE: Using patient-reported outcome measures (PROMs), this study was undertaken to determine how well patients with early onset scoliosis (EOS) fare in adulthood. METHODS: Among eight healthcare centers, 272 patients (≥ 18 years) surgically managed for EOS (≥ 5 years) completed the Scoliosis Research Society (SRS)-22r, Functional Assessment of Chronic Illness Therapy-10 (FACIT-Dyspnea-10), and Short Form (SF)-12. Functional and demographic data were collected. RESULTS: The response rate was 40% (108/272). EOS etiologies were congenital (45%), neuromuscular (20%), idiopathic (20%) syndromic (11%), and unknown (4%). All patients scored within normal limits on the FACIT-Dyspnea-10 pulmonary (no breathing aids, 78%; no oxygen, 92%). SF-12 physical health scores and most SRS-22r domains were significantly decreased (p < 0.05 and p < 0.001, respectively) compared with normative values. SF-12 and SRS-22r mental health scores (MHS) were lower than normative values (p < 0.05 and p < 0.02, respectively). Physical health PROMs varied between etiologies. Treatment varied by etiology. Patients with congenital EOS were half as likely to undergo definitive fusion. There was no difference between EOS etiologies in SF-12 MHS, with t scores being slightly lower than normative peers. CONCLUSION: Good long-term physical and social function and patient-reported quality of life were noted in surgically managed patients. Patients with idiopathic EOS physically outperformed those with other etiologies in objective and PROM categories but had similar MHS PROMs. Compared to normative values, EOS patients demonstrated decreased long-term physical capacity, slightly lower MHS, and preserved cardiopulmonary function. LEVEL OF EVIDENCE: Level IV Case Series.

6.
Artículo en Inglés | MEDLINE | ID: mdl-38744456

RESUMEN

A young boy presented with increasing lower limb pain and swelling for a month. At the time of his hospitalisation, he was unable to walk. We report the patient's clinical journey with clinical commentary throughout, highlighting the importance that uncommon diseases may be diagnosed with a high index of suspicion and thorough history taking.

7.
Sci Adv ; 10(16): eadk0217, 2024 Apr 19.
Artículo en Inglés | MEDLINE | ID: mdl-38630809

RESUMEN

Biological phenomena, from enzymatic catalysis to synaptic transmission, originate in the structural transformations of biomolecules and biomolecular assemblies in liquid water. However, directly imaging these nanoscopic dynamics without probes or labels has been a fundamental methodological challenge. Here, we developed an approach for "electron videography"-combining liquid phase electron microscopy with molecular modeling-with which we filmed the nanoscale structural fluctuations of individual, suspended, and unlabeled membrane protein nanodiscs in liquid. Systematic comparisons with biochemical data and simulation indicate the graphene encapsulation involved can afford sufficiently reduced effects of the illuminating electron beam for these observations to yield quantitative fingerprints of nanoscale lipid-protein interactions. Our results suggest that lipid-protein interactions delineate dynamically modified membrane domains across unexpectedly long ranges. Moreover, they contribute to the molecular mechanics of the nanodisc as a whole in a manner specific to the protein within. Overall, this work illustrates an experimental approach to film, quantify, and understand biomolecular dynamics at the nanometer scale.


Asunto(s)
Electrones , Nanoestructuras , Proteínas de la Membrana/química , Simulación de Dinámica Molecular , Microscopía Electrónica , Lípidos/química , Membrana Dobles de Lípidos/química , Nanoestructuras/química
9.
J Health Care Poor Underserved ; 35(1): 264-284, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38661870

RESUMEN

PURPOSE: Food insecurity threatens veterans' health, yet little is known about their experiences seeking food assistance. Thus, we studied veterans' experiences as they navigated from food insecurity to food assistance. METHODS: We built a journey map using thematic analysis of interviews with 30 veterans experiencing food insecurity. FINDINGS: The map focuses on: (1) identifying contributing circumstances, (2) recognizing food insecurity, (3) finding help, and (4) obtaining assistance. Contributing circumstances included unemployment/under-employment, mental health challenges, and interpersonal violence. Veterans did not recall being screened for food insecurity. Military training also inhibited some veterans from recognizing their own food insecurity. Locating and accessing food assistance was a struggle. While many veterans applied for the Supplemental Nutrition Assistance Program, few qualified. Food pantries were a last resort. CONCLUSIONS: Opportunities to help veterans include (1) addressing contributing circumstances, (2) improving identification, (3) sharing knowledge of resources, and (4) reexamining sufficiency of food assistance programs.


Asunto(s)
Asistencia Alimentaria , Inseguridad Alimentaria , Veteranos , Humanos , Asistencia Alimentaria/organización & administración , Veteranos/psicología , Masculino , Femenino , Persona de Mediana Edad , Adulto , Estados Unidos , Anciano , Investigación Cualitativa
10.
Nat Commun ; 15(1): 2852, 2024 Apr 11.
Artículo en Inglés | MEDLINE | ID: mdl-38605028

RESUMEN

Voids-the nothingness-broadly exist within nanomaterials and impact properties ranging from catalysis to mechanical response. However, understanding nanovoids is challenging due to lack of imaging methods with the needed penetration depth and spatial resolution. Here, we integrate electron tomography, morphometry, graph theory and coarse-grained molecular dynamics simulation to study the formation of interconnected nanovoids in polymer films and their impacts on permeance and nanomechanical behaviour. Using polyamide membranes for molecular separation as a representative system, three-dimensional electron tomography at nanometre resolution reveals nanovoid formation from coalescence of oligomers, supported by coarse-grained molecular dynamics simulations. Void analysis provides otherwise inaccessible inputs for accurate fittings of methanol permeance for polyamide membranes. Three-dimensional structural graphs accounting for the tortuous nanovoids within, measure higher apparent moduli with polyamide membranes of higher graph rigidity. Our study elucidates the significance of nanovoids beyond the nothingness, impacting the synthesis‒morphology‒function relationships of complex nanomaterials.

11.
Artículo en Inglés | MEDLINE | ID: mdl-38627244

RESUMEN

We evaluated the feasibility of harvesting bilateral internal thoracic arteries with the da Vinci Single Port system (SP) through a single left-sided subcostal incision. Complete bilateral mobilization with sufficiently long conduits for multivessel grafting was possible in 2 human cadavers and 2 live porcine. Creating the subcostal access and docking the SP system took between 14 and 21 min and the total harvest time ranged from 65 to 125 min in all models. No major bleeding was observed in the live porcine and hemostasis was managed with the available instrumentation. One porcine deceased during surgery due to ventricular fibrillation followed by cardiac arrest. The robotic harvesting was technically easily reproduced by the surgeons and required no additional rib-spreading. Further studies will be required to assess if this subcostal approach with the da Vinci SP system yields true clinical benefits in patients.

12.
J Pediatr Orthop ; 44(6): e555-e559, 2024 Jul 01.
Artículo en Inglés | MEDLINE | ID: mdl-38488141

RESUMEN

OBJECTIVE: The 24-item Early-Onset Scoliosis Questionnaire (EOSQ-24) is validated in patients with early onset scoliosis (EOS) aged 0 to 18 years and the 22-item Scoliosis Research Society (SRS-22) questionnaire is validated in idiopathic scoliosis patients 10 years and older. EOSQ-24 is completed by the caregiver and SRS-22 is completed by the patient. A prior study comparing patient-reported outcome measures completed by older pediatric patients and their parents showed a low level of agreement. Our purpose was to compare EOSQ-24 and SRS-22 scores completed at the same time point and at subsequent time points, in patients aged 5 to 18 years with idiopathic or congenital EOS without developmental delay. METHODS: This was a multicenter retrospective study. We identified pairs of EOSQ-24 and SRS-22 completed on the same day or within 6 months. Some patients had multiple pairs of surveys over time. EOSQ-24 and SRS-22 questions were matched and domain scores for Pain, Function, Mental Health, and Satisfaction were compared. Patients with a change in treatment between surveys were excluded. Pearson correlation coefficients ( r ) were used to compare domain scores, with r ≥0.7 indicating a strong relationship. RESULTS: There were 228 patient-caregiver dyads who completed 411 pairs of EOSQ-24 and SRS-22 on the same day. A strong correlation was found only for the Pain domain ( r =0.77). Function, Mental Health, and Satisfaction domains had positive but not strong correlations ( r = 0.58, r = 0.50, r = 0.41, respectively). Subanalysis based on age also showed a strong correlation only for Pain. There were 76 patient-caregiver dyads who completed 134 pairs of surveys with SRS-22 completed within 6 months after an EOSQ-24. All domains demonstrated a positive but not strong correlation, with Pain showing the highest correlation ( r = 0.64). CONCLUSIONS: EOSQ-24 and SRS-22 had a strong correlation only for Pain when completed at the same time point. EOSQ-24 and SRS-22 completed within 6 months lacked a strong correlation for all domains. Our findings suggest that parents and children with EOS may not share the same perspective on their health. Self-reported questionnaires should be used when possible to assess health-related quality of life in older children and adolescents with EOS who are developmentally neurotypical. LEVEL OF EVIDENCE: Level III-diagnostic.


Asunto(s)
Cuidadores , Calidad de Vida , Escoliosis , Humanos , Escoliosis/psicología , Estudios Retrospectivos , Niño , Adolescente , Femenino , Cuidadores/psicología , Masculino , Encuestas y Cuestionarios , Preescolar , Edad de Inicio , Medición de Resultados Informados por el Paciente
13.
Nat Commun ; 15(1): 2750, 2024 Mar 29.
Artículo en Inglés | MEDLINE | ID: mdl-38553463

RESUMEN

The defining feature of Parkinson disease (PD) and Lewy body dementia (LBD) is the accumulation of alpha-synuclein (Asyn) fibrils in Lewy bodies and Lewy neurites. Here we develop and validate a method to amplify Asyn fibrils extracted from LBD postmortem tissue samples and use solid state nuclear magnetic resonance (SSNMR) studies to determine atomic resolution structure. Amplified LBD Asyn fibrils comprise a mixture of single protofilament and two protofilament fibrils with very low twist. The protofilament fold is highly similar to the fold determined by a recent cryo-electron microscopy study for a minority population of twisted single protofilament fibrils extracted from LBD tissue. These results expand the structural characterization of LBD Asyn fibrils and approaches for studying disease mechanisms, imaging agents and therapeutics targeting Asyn.


Asunto(s)
Enfermedad por Cuerpos de Lewy , Enfermedad de Parkinson , Humanos , alfa-Sinucleína/química , Microscopía por Crioelectrón , Cuerpos de Lewy/patología , Enfermedad por Cuerpos de Lewy/patología , Enfermedad de Parkinson/patología
14.
J Voice ; 2024 Mar 04.
Artículo en Inglés | MEDLINE | ID: mdl-38443267

RESUMEN

The trombone and the male voice cover similar frequency ranges and, at a physical level, the basic anatomies of the voice and the trombone show some qualitative similarity: both have two vibrating flaps of muscular tissue (the vocal folds and the trombonist's lips, respectively), and in each case, these are loaded acoustically by resonant ducts both upstream and downstream. There are also large differences. For example, the downstream ducts differ in length. The trombone usually operates with an oscillation frequency close to that of one of the downstream resonances; this is only occasionally true of the voice. Because the lips of a trombone player are much more readily accessible for experiments, they have yielded more detailed measurements of longitudinal and transverse motion, AC and DC pressures, and flow under varying acoustic loads. In normal operation, the downstream motion of the lips or vocal folds leads the lateral opening motion, resulting in a sweeping flow that leads the flow through the aperture. The relative timing of these flow components is related to the phases of the pressure across the tissues and the downstream acoustic load. Further, the work done on trombonists' lips due to their sweeping motion makes an important contribution to maintaining oscillation with both inertive and compliant acoustic loads. This probably explains why trombonists can "lip" the pitch smoothly from above to below a downstream resonance. Similar calculations on measurements of vocal fold motion show a similar work contribution and suggest that this sweeping motion is significant in powering this component of laryngeal motion. Comparing and contrasting the operation of the two "instruments" gives new perspectives on the basic science of the voice, with practical applications including the use of resonances. This could be helpful to voice scientists but also useful background knowledge for singers and singing teachers.

15.
Spine Deform ; 12(4): 1145-1153, 2024 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-38514530

RESUMEN

PURPOSE: This purpose of this study was to assess the impact of patient and implant characteristics on LIV selection in ambulatory children with EOS and to assess the relationship between the touched vertebrae (TV), the last substantially touched vertebrae (LSTV), the stable vertebrae (SV), the sagittal stable vertebrae (SSV), and the LIV. METHODS: A multicenter pediatric spine database was queried for patients ages 2-10 years treated by growth friendly instrumentation with at least 2-year follow up. The relationship between the LIV and preoperative spinal height, curve magnitude, and implant type were assessed. The relationships between the TV, LSTV, SV, SSV, and the LIV were also evaluated. RESULTS: Overall, 281 patients met inclusion criteria. The LIV was at L3 or below in most patients with a lumbar LIV: L1 (9.2%), L2 (20.2%), L3 (40.9%), L4 (29.5%). Smaller T1 - T12 length was associated with more caudal LIV selection (p = 0.001). Larger curve magnitudes were similarly associated with more caudal LIV selection (p = < 0.0001). Implant type was not associated with LIV selection (p = 0.32) including MCGR actuator length (p = 0.829). The LIV was caudal to the TV in 78% of patients with a TV at L2 or above compared to only 17% of patients with a TV at L3 or below (p < 0.0001). CONCLUSIONS: Most EOS patients have an LIV of L3 or below and display TV-LIV and LSTV-LIV incongruence. These findings suggest that at the end of treatment, EOS patients rarely have the potential for selective thoracic fusion. Further work is necessary to assess the potential for a more selective approach to LIV selection in EOS. LEVEL OF EVIDENCE: III.


Asunto(s)
Escoliosis , Humanos , Escoliosis/cirugía , Escoliosis/diagnóstico por imagen , Niño , Preescolar , Femenino , Masculino , Fusión Vertebral/instrumentación , Fusión Vertebral/métodos , Vértebras Lumbares/cirugía , Vértebras Torácicas/cirugía , Estudios Retrospectivos , Edad de Inicio
16.
Avian Dis ; 67(4): 349-365, 2024 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-38300657

RESUMEN

During a series of pathology surveys in four production complexes of a U.S. broiler integrator, the technical services veterinarians of an animal health company noted a high incidence of severe gizzard erosions and ulcerations (GEU), prompting further clinical investigation and a battery trial. No growth-promoting antibiotics or ionophore coccidiostats were used during the period of these surveys. All used tribasic copper chloride (TBCC) at ≤120 ppm added copper in broiler rations. Clostridium perfringens was isolated from 83% and 67% of gizzard lesions cultured in two complexes, and cecal C. perfringens most probable number determinations were higher in severely affected than in mildly affected or unaffected birds. Histopathology revealed both acellular koilin fusion defects characteristic of copper toxicity, as well as inflammatory cell infiltrates. Intralesional bacilli suggestive of C. perfringens were noted in 78% of affected flocks examined. Species E Aviadenovirus was isolated from one bird in one complex, and that bird had a single intranuclear inclusion body; no other flocks had Adenoviruses isolated or detected on PCR, nor any inclusion bodies. Other viruses detected were thought to be incidental. A pilot study using feed with supplemental copper from TBCC or copper sulfate and challenge with one of the isolated C. perfringens strains reproduced the lesions. A battery study was conducted with an unchallenged negative control group fed a diet with 16 ppm added copper, a group fed the control diet and orally challenged with 108 organisms of a field strain of C. perfringens at 21 and 22 days, and a group treated with the same diet containing 250 ppm added copper from TBCC and orally challenged with C. perfringens. Birds were necropsied at 23 and 28 days. All challenged groups developed lesions, with those receiving both TBCC and C. perfringens having significantly higher gross and histopathological lesion scores than the unchallenged negative controls. Lesions were qualitatively similar to those in the field and contained suspected C. perfringens bacilli. Because the levels of TBCC used in the commercial birds and in the battery trial generally have been considered safe, and because C. perfringens is usually regarded as a pathogen of the lower GI tract, the possible association of these two agents with GEU is a novel observation and warrants further investigation.


Investigaciones sobre el aumento de la incidencia de erosiones y ulceraciones severas en la molleja en pollos de engorde comerciales en los Estados Unidos. Durante una serie de estudios de patología en cuatro complejos de producción de un integrador de pollos de engorde de los Estados Unidos, veterinarios de servicio técnico de una empresa de salud animal observaron una alta incidencia de erosiones y ulceraciones severas de la molleja (GEU), lo que motivó una mayor investigación clínica y un estudio en batería. Durante el período de estas encuestas no se utilizaron antibióticos promotores del crecimiento ni coccidiostáticos ionóforos. Todos utilizaron cloruro de cobre tribásico (TBCC) con un nivel de ≤120 ppm de cobre agregado en raciones para pollos de engorde. Se aisló Clostridium perfringens del 83% y el 67% de las lesiones de molleja cultivadas en dos complejos, y las determinaciones del número más probable de C. perfringens en los sacos ciegos fueron mayores en aves severamente afectadas que en aves levemente afectadas o no afectadas. La histopatología reveló defectos de fusión de la capa córnea acelular característicos de la toxicidad por cobre, así como infiltrados de células inflamatorias. Se observaron bacilos intralesionales sugestivos de C. perfringens en el 78% de las parvadas afectadas examinadas. La especie Aviadenovirus E se aisló de un ave en un complejo, y esa ave tenía un único cuerpo de inclusión intranuclear; en ninguna otra parvada se aislaron o detectaron adenovirus mediante PCR, ni se observaron cuerpos de inclusión. Se pensó que otros virus detectados fueron incidentales. Un estudio piloto que utilizó alimento con cobre suplementario de cloruro de cobre tribásico o sulfato de cobre y con desafío con una de las cepas aisladas de C. perfringens reprodujo las lesiones. Se realizó un estudio de batería con un grupo de control negativo no desafiado alimentado con una dieta con 16 ppm de cobre agregado, un grupo alimentado con la dieta de control y desafiado por vía oral con 108 organismos de una cepa de campo de C. perfringens a los 21 y 22 días, y un grupo tratado con la misma dieta que contenía 250 ppm de cobre agregado de cloruro de cobre tribásico y desafiados por vía oral con C. perfringens. A las aves se les realizó la necropsia a los 23 y 28 días. Todos los grupos desafiados desarrollaron lesiones, y aquellos que recibieron cloruro de cobre tribásico y C. perfringens tuvieron puntuaciones de lesiones macroscópicas e histopatológicas significativamente más altas que los controles negativos no desafiados. Las lesiones eran cualitativamente similares a las del campo y contenían bacilos sospechosos de C. perfringens. Debido a que los niveles de cloruro de cobre tribásico utilizados en las aves comerciales y en el ensayo en batería generalmente se han considerado seguros, y debido a que C. perfringens generalmente se considera un patógeno del tracto gastrointestinal inferior, la posible asociación de estos dos agentes con erosiones y ulceraciones severas de la molleja es una observación reciente y justifica una mayor investigación.


Asunto(s)
Bacillus , Cloruros , Enfermedades de las Aves de Corral , Animales , Cobre , Pollos , Molleja de las Aves , Incidencia , Proyectos Piloto , Enfermedades de las Aves de Corral/epidemiología , Clostridium perfringens , Firmicutes
17.
J Clin Invest ; 134(1)2024 Jan 02.
Artículo en Inglés | MEDLINE | ID: mdl-38165033

RESUMEN

The ability to change an organism's DNA through gene editing is of great importance for the prevention and treatment of genetic and acquired diseases. Rapid progress has been made during the last decade due to the discovery and refinement of CRISPR/Cas9 as an accurate, fast, and reliable genome editing technique. In this issue of the JCI, Lebek et al. present the culmination from a line of work in the Olson laboratory focused on in vivo gene editing of CAMK2D. The paper presents a combined state-of-the-art gene therapy approach that demonstrates how gene therapy can yield cardioprotection in a mouse model and takes notable steps toward potential applicability in patients.


Asunto(s)
Sistemas CRISPR-Cas , Edición Génica , Ratones , Animales , Humanos , Edición Génica/métodos , Terapia Genética/métodos , ADN
18.
Adv Mater ; 36(15): e2308720, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-38189549

RESUMEN

Template-directed self-assembly of solidifying eutectics results in emergence of unique microstructures due to diffusion constraints and thermal gradients imposed by the template. Here, the importance of selecting the template material based on its conductivity to control heat transfer between the template and the solidifying eutectic, and thus the thermal gradients near the solidification front, is demonstrated. Simulations elucidate the relationship between the thermal properties of the eutectic and template and the resultant microstructure. The overarching finding is that templates with low thermal conductivities are generally advantageous for forming highly organized microstructures. When electrochemically porosified silicon pillars (thermal conductivity < 0.3 Wm-1K-1) are used as the template into which an AgCl-KCl eutectic is solidified, 99% of the unit cells in the solidified structure exhibit the same pattern. In contrast, when higher thermal conductivity crystalline silicon pillars (≈100 Wm-1K-1) are utilized, the expected pattern is only present in 50% of the unit cells. The thermally engineered template results in mesostructures with tunable optical properties and reflectances nearly identical to the simulated reflectances of perfect structures, indicating highly ordered patterns are formed over large areas. This work highlights the importance of controlling heat flows in template-directed self-assembly of eutectics.

19.
BJUI Compass ; 5(1): 84-89, 2024 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-38179033

RESUMEN

Introduction: We sought to determine potential patient reported advantages of the da Vinci single-port (SP) robotic system for urological procedures compared with the previous model, the da Vinci multiport (MP) system. The SP model utilizes a single 30 to 40 mm incision rather than multiple 5 to 22 mm incisions. This project aims to prospectively investigate the impact of the novel SP system on patient reported cosmetic and psychometric surgical outcomes. Methods: We conducted a prospective study of patients who underwent uro-oncologic surgery by three urologists at the University of Illinois Chicago from April to November 2021. Study participants completed a Patient Scar Assessment Questionnaire 20 and 90 days post-procedure. The Patient Scar Assessment Questionnaire is a reliable measure of surgical scars that includes five subscales: Appearance, Symptoms, Consciousness, Satisfaction with Appearance, and Satisfaction with Symptoms. Higher scores represented worse reported outcomes. Results: On Postoperative Day 20, there were 77 responses (53 SP and 24 MP). Patients receiving SP procedures reported more favourable outcomes in terms of appearance, symptoms, consciousness, and pain medication. On Day 90, there were 37 responses (24 SP and 13 MP). Patients receiving SP procedures reported more favourable outcomes in terms of appearance. No significant differences were seen on Day 90 in terms of pain, medication, symptoms, consciousness, or satisfaction. Conclusions: This study demonstrates the superiority of the SP in patient reported cosmetic and pain outcomes on short- and long-term follow-up after uro-oncological surgical procedures. Symptomatic and cosmetic advantages are present at the 20 day follow-up, with better scar appearance being significant 90 days after surgery.

20.
Cancers (Basel) ; 16(2)2024 Jan 10.
Artículo en Inglés | MEDLINE | ID: mdl-38254909

RESUMEN

The authors alerted the Editorial Office of the mistake on 5 August 2023 and the final documents were sent for evaluation on 12 December 2023 [...].

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