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1.
Diabetologia ; 67(1): 170-189, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-37712955

RESUMO

AIMS/HYPOTHESIS: The brain is a major consumer of glucose as an energy source and regulates systemic glucose as well as energy balance. Although glucose transporters such as GLUT2 and sodium-glucose cotransporter 2 (SGLT2) are known to regulate glucose homeostasis and metabolism, the identity of a receptor that binds glucose to activate glucose signalling pathways in the brain is unknown. In this study, we aimed to discover a glucose receptor in the mouse hypothalamus. METHODS: Here we used a high molecular mass glucose-biotin polymer to enrich glucose-bound mouse hypothalamic neurons through cell-based affinity chromatography. We then subjected the enriched neurons to proteomic analyses and identified adhesion G-protein coupled receptor 1 (ADGRL1) as a top candidate for a glucose receptor. We validated glucose-ADGRL1 interactions using CHO cells stably expressing human ADGRL1 and ligand-receptor binding assays. We generated and determined the phenotype of global Adgrl1-knockout mice and hypothalamus-specific Adgrl1-deficient mice. We measured the variables related to glucose and energy homeostasis in these mice. We also generated an Adgrl1Cre mouse model to investigate the role of ADGRL1 in sensing glucose using electrophysiology. RESULTS: Adgrl1 is highly expressed in the ventromedial nucleus of the hypothalamus (VMH) in mice. Lack of Adgrl1 in the VMH in mice caused fasting hyperinsulinaemia, enhanced glucose-stimulated insulin secretion and insulin resistance. In addition, the Adgrl1-deficient mice had impaired feeding responses to glucose and fasting coupled with abnormal glucose sensing and decreased physical activity before development of obesity and hyperglycaemia. In female mice, ovariectomy was necessary to reveal the contribution of ADGRL1 to energy and glucose homeostasis. CONCLUSIONS/INTERPRETATION: Altogether, our findings demonstrate that ADGRL1 binds glucose and is involved in energy as well as glucose homeostasis in a sex-dependent manner. Targeting ADGRL1 may introduce a new class of drugs for the treatment of type 2 diabetes and obesity.


Assuntos
Diabetes Mellitus Tipo 2 , Animais , Cricetinae , Feminino , Humanos , Camundongos , Cricetulus , Diabetes Mellitus Tipo 2/complicações , Metabolismo Energético/genética , Glucose/metabolismo , Homeostase/fisiologia , Camundongos Knockout , Obesidade/metabolismo , Proteômica
2.
BMC Plant Biol ; 24(1): 428, 2024 May 21.
Artigo em Inglês | MEDLINE | ID: mdl-38773358

RESUMO

BACKGROUND: Acacia nilotica Linn. is a widely distributed tree known for its applications in post-harvest and medicinal horticulture. However, its seed-based growth is relatively slow. Seed is a vital component for the propagation of A. nilotica due to its cost-effectiveness, genetic diversity, and ease of handling. Colchicine, commonly used for polyploidy induction in plants, may act as a pollutant at elevated levels. Its optimal concentration for Acacia nilotica's improved growth and development has not yet been determined, and the precise mechanism underlying this phenomenon has not been established. Therefore, this study investigated the impact of optimized colchicine (0.07%) seed treatment on A. nilotica's morphological, anatomical, physiological, fluorescent, and biochemical attributes under controlled conditions, comparing it with a control. RESULTS: Colchicine seed treatment significantly improved various plant attributes compared to control. This included increased shoot length (84.6%), root length (53.5%), shoot fresh weight (59.1%), root fresh weight (42.8%), shoot dry weight (51.5%), root dry weight (40%), fresh biomass (23.6%), stomatal size (35.9%), stomatal density (41.7%), stomatal index (51.2%), leaf thickness (11 times), leaf angle (2.4 times), photosynthetic rate (40%), water use efficiency (2.2 times), substomatal CO2 (36.6%), quantum yield of photosystem II (13.1%), proton flux (3.1 times), proton conductivity (2.3 times), linear electron flow (46.7%), enzymatic activities of catalase (25%), superoxide dismutase (33%), peroxidase (13.5%), and ascorbate peroxidase (28%), 2,2-diphenyl-1-picrylhydrazyl-radical scavenging activities(23%), total antioxidant capacity (59%), total phenolic (23%), and flavonoid content (37%) with less number of days to 80% germination (57.1%), transpiration rate (53.9%), stomatal conductance (67.1%), non-photochemical quenching (82.8%), non-regulatory energy dissipation (24.3%), and H2O2 (25%) and O-2 levels (30%). CONCLUSION: These findings elucidate the intricate mechanism behind the morphological, anatomical, physiological, fluorescent, and biochemical transformative effects of colchicine seed treatment on Acacia nilotica Linn. and offer valuable insights for quick production of A. nilotica's plants with modification and enhancement from seeds through an eco-friendly approach.


Assuntos
Acacia , Colchicina , Sementes , Colchicina/farmacologia , Acacia/efeitos dos fármacos , Acacia/fisiologia , Acacia/crescimento & desenvolvimento , Acacia/metabolismo , Sementes/efeitos dos fármacos , Sementes/crescimento & desenvolvimento , Fotossíntese/efeitos dos fármacos , Antioxidantes/metabolismo
3.
Microb Ecol ; 87(1): 31, 2024 Jan 16.
Artigo em Inglês | MEDLINE | ID: mdl-38228915

RESUMO

Phosphorus (P) is a vital mineral nutrient in agriculture and its deficiency results in reduced growth, yield, and grain quality in cereals. Much of the applied P in agriculture becomes fixed in soils, limiting its accessibility to plants. Thus, investigating sustainable strategies to release fixed P resources and enhance plant uptake is crucial. This study explored how plant-associated bacteria employ phosphate solubilizing mechanisms to improve P availability. The growth patterns of four bacterial strains, namely Bacillus subtilis ZE15 and ZR3, along with Bacillus megaterium ZE32 and ZR19, were examined in Pikovskaya's broth culture with and without the addition of insoluble phosphorus (P). In the absence of P amendment, most strains reached a stationary growth phase by the fourth day. However, their responses diverged when exposed to P-amended media. Particularly, ZE15 demonstrated the highest P solubilization capability, achieving up to 130 µg mL-1 solubilization in vitro. All strains produced organic acids in Pikovskaya's broth culture. A comparison of the influence of Ca3(PO4)2 revealed significantly greater organic acid quantities in the presence of insoluble P. Notably, strain ZE15 exhibited the highest phosphate esterase activity (3.65 nmol g-1 dry matter), while strain ZE32 showed the highest ß-D glucosidase activity (2.81 nmol g-1 dry matter) in the presence of insoluble P. The ability of Bacillus species to solubilize P in combination with increased exoenzyme activity in the rhizosphere could be used in future studies to support P uptake through enhanced solubilization and mineralization.


Assuntos
Bacillus , Fosfatos , Triticum/microbiologia , Solo , Fósforo , Bacillus subtilis , Microbiologia do Solo
4.
Rev Med Virol ; 33(3): e2409, 2023 05.
Artigo em Inglês | MEDLINE | ID: mdl-36426668

RESUMO

Although the Global Polio Eradication Initiative has been largely successful in elimination of polio from various parts of the world, sporadic local outbreaks in non-endemic areas continue to pose a threat to global polio eradication efforts. In the two endemic countries, Pakistan and Afghanistan, a staggering 176 cases of wild poliovirus 1 (WPV1) were reported in 2019. In 2020 alone, 959 cases of Circulating Vaccine Derived Poliovirus 2 were reported globally from 27 countries. After staying polio-free for years, cases of WPV were detected in Malawi and Mozambique in 2022. The roots of the reported strains matched with the WPV strain from Pakistan. The emergence of WPV cases in Malawi and Mozambique underscores the fact that WPV still has the chance to spread beyond the Afghanistan-Pakistan region and sustained efforts are required for its complete eradication. In the case of smallpox, surveillance-containment was the key to eradication as many countries had already eradicated smallpox and the bigger concern was to track and contain any new cases emerging. Smallpox eradication followed a comprehensive plan which included elements like quality control and standardisation of vaccination protocols. Governments all over the world should prioritise immunisation drives, surveillance, and awareness campaigns to achieve the dream of a polio-free world.


Assuntos
Poliomielite , Poliovirus , Varíola , Humanos , Programas de Imunização , Vigilância da População , Saúde Global , Poliomielite/epidemiologia , Poliomielite/prevenção & controle , Erradicação de Doenças
5.
Sensors (Basel) ; 24(12)2024 Jun 09.
Artigo em Inglês | MEDLINE | ID: mdl-38931541

RESUMO

Driving while drowsy poses significant risks, including reduced cognitive function and the potential for accidents, which can lead to severe consequences such as trauma, economic losses, injuries, or death. The use of artificial intelligence can enable effective detection of driver drowsiness, helping to prevent accidents and enhance driver performance. This research aims to address the crucial need for real-time and accurate drowsiness detection to mitigate the impact of fatigue-related accidents. Leveraging ultra-wideband radar data collected over five minutes, the dataset was segmented into one-minute chunks and transformed into grayscale images. Spatial features are retrieved from the images using a two-dimensional Convolutional Neural Network. Following that, these features were used to train and test multiple machine learning classifiers. The ensemble classifier RF-XGB-SVM, which combines Random Forest, XGBoost, and Support Vector Machine using a hard voting criterion, performed admirably with an accuracy of 96.6%. Additionally, the proposed approach was validated with a robust k-fold score of 97% and a standard deviation of 0.018, demonstrating significant results. The dataset is augmented using Generative Adversarial Networks, resulting in improved accuracies for all models. Among them, the RF-XGB-SVM model outperformed the rest with an accuracy score of 99.58%.


Assuntos
Inteligência Artificial , Condução de Veículo , Redes Neurais de Computação , Radar , Máquina de Vetores de Suporte , Humanos , Algoritmos , Aprendizado de Máquina
6.
Acta Neurol Taiwan ; 33(3): 112-121, 2024 Sep 30.
Artigo em Inglês | MEDLINE | ID: mdl-37968860

RESUMO

Neurofibroma is an autosomal benign disorder. It can be localized, diffuse or invasive like plexiform neurofibroma that involves the nerves, muscle, tissues, skeleton. It represents itself as a destructive variant of neurofibroma, mostly present as orbital or periorbital neurofibroma or may be associated with autosomal dominant disease. Clinical diagnosis of neurofibromatosis (NF) according to National Institutes of Health (NIH) criteria should have more than two of the seven features including lisch nodules, cafe'- au-lait spots, plexiform neurofibroma, optic glioma, freckling, first degree relative with NF or dysplasia of cortical bones. However, proper early diagnosis is still crucial due to its various presentation such as cheek mass, painless swelling on skin, chalazion, intratracheal tumor, genital swelling or ptosis. It is reported that neurofibroma often represents as ocular or facial swelling. Here we are presenting features of neurofibroma of eight cases of patients from Civil Hospital, Karachi. These cases had main complain of overhanging skin mass mainly on orbital or periorbital region that damage the area and with poor daily activities. Multiple nodules on face and body along with them Cafe'-au-lait spots and lisch nodules were main signs. While, other signs i.e. ptosis, pterygium, telecanthus and muddy discoloration of conjunctiva need further evaluation for correlation with neurofibromatosis. Debulking surgery was planned for most of the cases but the huge disfigurement caused by overhanging skin mass and nodules made it a challenge for plastic surgeons to provide good outcomes with minimum damage. Keywords: neurofibroma; lisch nodules; ptosis; Cafe'-au-lait spot; periorbital; overhanging skin.


Assuntos
Neoplasias Oculares , Hamartoma , Neurofibroma Plexiforme , Neurofibroma , Neurofibromatoses , Neurofibromatose 1 , Estados Unidos , Humanos , Neurofibromatose 1/complicações , Neurofibromatose 1/diagnóstico , Neurofibromatose 1/patologia , Neurofibroma Plexiforme/complicações , Neurofibromatoses/complicações , Neurofibroma/diagnóstico , Neurofibroma/complicações , Neurofibroma/patologia , Manchas Café com Leite/complicações , Manchas Café com Leite/diagnóstico , Manchas Café com Leite/patologia , Hamartoma/complicações , Neoplasias Oculares/complicações
7.
Environ Geochem Health ; 46(8): 288, 2024 Jul 06.
Artigo em Inglês | MEDLINE | ID: mdl-38970676

RESUMO

The combustion of coal in power plants releases significant amounts of polycyclic aromatic hydrocarbons (PAHs), which are highly toxic and carcinogenic. This study assesses the ecological and human health impacts of PAHs contamination from a coal-fired power plant over 8 years. The monitoring site selection considered the distance from the power plant and the prevailing wind direction in the investigated area. The results reveal that, during the monitoring period, PAH levels increased on average by 43%, 61%, and 37% in the zone of the prevailing wind direction, in the area proximate to the power plant, and the zone distant from it, respectively. The site, which has a radius of 4.5 km in the prevailing wind direction, exhibited the highest ecological and human health impacts. Additionally, a strong correlation was observed between environmental and human health impacts, depending on the distance from the power plant, particularly in areas with the prevailing wind direction. These insights contribute to a comprehensive understanding of the intricate dynamics linking power plant emissions, PAHs contamination, and their far-reaching consequences on the environment and human health.


Assuntos
Carvão Mineral , Monitoramento Ambiental , Hidrocarbonetos Policíclicos Aromáticos , Centrais Elétricas , Poluentes do Solo , Hidrocarbonetos Policíclicos Aromáticos/análise , Humanos , Monitoramento Ambiental/métodos , Poluentes do Solo/análise , Vento , Avaliação do Impacto na Saúde
8.
BMC Oral Health ; 24(1): 621, 2024 May 28.
Artigo em Inglês | MEDLINE | ID: mdl-38807112

RESUMO

BACKGROUND: A new classification for Periodontal and Peri-implant Diseases and Conditions was introduced in the 2017 World Workshop. In the past the 1999 Armitage Classification was commonly used in practice. This study aimed to assess the ease and practicability of retroactively diagnosing a subset of patients formerly diagnosed using the 1999 AAP/CDC classification with the 2017 AAP/EFP disease classification. METHODS: A random subset of 10% of all patients referred over a 7-year period (2011-2018) to the Post-Doctoral Periodontics Clinic at Columbia University College of Dental Medicine were reviewed by accessing the Electronic Health Records (EHRs) on axiUm. Patients diagnosed with periodontal disease based on the 1999 AAP/CDC classification (including chronic and aggressive Periodontitis) were reclassified using the 2017 classification (stage: I, II, III and grade: A, B, C). RESULTS: A sample of 336 patient records were examined. 132 were diagnosed with gingivitis, and 204 with periodontitis. Of these 204 patients, 68 (33.3%) were diagnosed with aggressive and 136 (66.7%) with chronic periodontitis. Patients diagnosed with aggressive periodontitis, 10% were reclassified as stage II, 47% as stage III, and 43% as stage IV periodontitis, and 100% were reclassified as grade C. Among patients with chronic periodontitis, 7% were reclassified as stage I, 65% as stage II, 21% as stage III, and 7% as stage IV; 11% of these were reclassified as grade A, 63% grade B, and 26% grade C. CONCLUSIONS: The majority of those originally diagnosed with aggressive (90%) and chronic (80%) periodontitis were reclassified as either molar/incisor pattern stage III grade C or stage IV grade C periodontitis, and stage II or III periodontitis, respectively. The study demonstrated that it is practical to retroactively reassign a diagnosis according to the new 2017 classification using available information included in dental EHRs.


Assuntos
Registros Eletrônicos de Saúde , Doenças Periodontais , Humanos , Doenças Periodontais/classificação , Doenças Periodontais/diagnóstico , Masculino , Feminino , Adulto , Pessoa de Meia-Idade
9.
Trop Anim Health Prod ; 56(3): 105, 2024 Mar 19.
Artigo em Inglês | MEDLINE | ID: mdl-38502249

RESUMO

Buffaloes are considered animals of the future with the ability to survive under unfavorable conditions. However, the lack of access to superior germplasm poses a significant challenge to increasing buffalo production. Resveratrol has been shown to improve oocyte quality and developmental competence in various animals during in vitro embryo development. However, limited information is available on the use of resveratrol to improve the in vitro maturation and development competence of Nili Ravi buffalo oocytes. Therefore, the current study aimed to investigate the influence of different concentrations of resveratrol on the maturation, fertilization, and development of buffalo oocytes under in vitro conditions. Oocytes were collected from ovaries and subjected to in vitro maturation (IVM) using varying concentrations of resveratrol (0 µM, 0.5 µM, 1 µM, 1.5 µM, and 2 µM), and the maturation process was assessed using a fluorescent staining technique. Results indicated no significant differences in oocyte maturation, morula rate, and blastocyst rate among the various resveratrol concentrations. However, the cleavage rate notably increased with 1 µM and 1.5 µM concentrations of resveratrol (p < 0.05). In conclusion, the study suggests that adding 1 µM of resveratrol into the maturation media may enhance the cleavage and blastocyst hatching of oocytes of Nili Ravi buffaloes. These findings hold promise for advancing buffalo genetics, reproductive performance, and overall productivity, offering potential benefits to the dairy industry, especially in Asian countries.


Assuntos
Bison , Búfalos , Feminino , Animais , Resveratrol/farmacologia , Fertilização in vitro/veterinária , Oócitos , Ovário
10.
Saudi Pharm J ; 32(3): 101922, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38318317

RESUMO

As the global landscape continues to witness an increase in migration, the healthcare community faces an evolving challenge: the provision of quality medication care to migrant patients. Language barriers, cultural differences, and a lack of understanding of the local healthcare system can often impede the effective management of medications and access to healthcare services among migrant populations. Pharmacists, as medication experts, are dignified to make a substantial impact in bridging the gap between migrants and quality healthcare. Their expertise in medication management, accessibility, and counseling positions them as critical healthcare providers for this patient population. Pharmacies and pharmacists can serve as trusted hubs where migrants receive not only essential medications but also culturally sensitive support in navigating the healthcare system. This commentary article highlights the critical importance of culturally competent medication care for migrant patients and the central role that pharmacists can play in this endeavor. By establishing organization dedicated to this cause lead by pharmacists, we can not only address an urgent healthcare concern but also set a precedent for a healthcare system that values inclusivity, cultural competence, and equitable access to quality medication care for all, regardless of their cultural background.

11.
Hum Mol Genet ; 30(12): 1160-1171, 2021 06 09.
Artigo em Inglês | MEDLINE | ID: mdl-33864365

RESUMO

At least 5% of children present unexpected difficulties in expressing and understanding spoken language. This condition is highly heritable and often co-occurs with other neurodevelopmental disorders such as dyslexia and ADHD. Through an exome sequencing analysis, we identified a rare missense variant (chr16:84405221, GRCh38.p12) in the ATP2C2 gene. ATP2C2 was implicated in language disorders by linkage and association studies, and exactly the same variant was reported previously in a different exome sequencing study for language impairment (LI). We followed up this finding by genotyping the mutation in cohorts selected for LI and comorbid disorders. We found that the variant had a higher frequency in LI cases (1.8%, N = 360) compared with cohorts selected for dyslexia (0.8%, N = 520) and ADHD (0.7%, N = 150), which presented frequencies comparable to reference databases (0.9%, N = 24 046 gnomAD controls). Additionally, we observed that carriers of the rare variant identified from a general population cohort (N = 42, ALSPAC cohort) presented, as a group, lower scores on a range of reading and language-related measures compared to controls (N = 1825; minimum P = 0.002 for non-word reading). ATP2C2 encodes for an ATPase (SPCA2) that transports calcium and manganese ions into the Golgi lumen. Our functional characterization suggested that the rare variant influences the ATPase activity of SPCA2. Thus, our results further support the role of ATP2C2 locus in language-related phenotypes and pinpoint the possible effects of a specific rare variant at molecular level.


Assuntos
ATPases Transportadoras de Cálcio/genética , Dislexia/genética , Predisposição Genética para Doença , Transtorno Específico de Linguagem/genética , Adenosina Trifosfatases/genética , Adolescente , Adulto , Criança , Dislexia/patologia , Feminino , Estudos de Associação Genética , Genótipo , Humanos , Masculino , Mutação de Sentido Incorreto , Linhagem , Polimorfismo de Nucleotídeo Único , Transtorno Específico de Linguagem/epidemiologia , Transtorno Específico de Linguagem/patologia , Sequenciamento do Exoma , Adulto Jovem
12.
Biochem Cell Biol ; 101(1): 87-100, 2023 02 01.
Artigo em Inglês | MEDLINE | ID: mdl-36469862

RESUMO

Myocardial fibrosis is a common pathological companion of various cardiovascular diseases. To date, the role of enhancer of zeste homolog 2 (EZH2) in cancer has been well demonstrated including in renal carcinoma and its inhibitors have entered the stage of phase I/II clinical trials. However, the precise mechanism of EZH2 in cardiac diseases is largely unclear. In the current study, we first found that EZH2 expression was increased in Ang-II-treated cardiac fibroblasts (CFs) and mouse heart homogenates following isoproterenol (ISO) administration for 21 days, respectively. Ang-II induces CFs activation and increased collagen-I, collagen-III, α-SMA, EZH2, and trimethylates lysine 27 on histone 3 (H3K27me3) expressions can be reversed by EZH2 inhibitor (GSK126) and EZH2 siRNA. The ISO-induced cardiac hypertrophy, and fibrosis in vivo which were also related to the upregulation of EZH2 and its downstream target, H3K27me3, could be recovered by GSK126. Furthermore, the upregulation of EZH2 induces the decrease of paired box 6 (PAX6) and C-X-C motif ligand 10 (CXCL10) "which" were also reversed by GSK126 treatment. In summary, the present evidence strongly suggests that GSK126 could be a therapeutic intervention, blunting the development and progression of myocardial fibrosis in an EZH2-PAX6-CXCL10-dependent manner.


Assuntos
Proteína Potenciadora do Homólogo 2 de Zeste , Animais , Camundongos , Proteína Potenciadora do Homólogo 2 de Zeste/genética , Proteína Potenciadora do Homólogo 2 de Zeste/metabolismo , Epigênese Genética , Fibrose , Histonas/metabolismo , Fator de Transcrição PAX6/genética , Fator de Transcrição PAX6/metabolismo
13.
Liver Transpl ; 29(2): 134-144, 2023 Feb 01.
Artigo em Inglês | MEDLINE | ID: mdl-35876731

RESUMO

Hepatopulmonary syndrome (HPS) is associated with increased waitlist mortality in liver transplantation (LT) candidates. Children with HPS are granted Model for End-Stage Liver Disease (MELD)/Pediatric End-Stage Liver Disease (PELD) exception points for waitlist prioritization in the United States based on criterion developed for adults. In this study, the impact of this MELD/PELD exception policy on post-LT survival in children was examined. A retrospective cohort of patients aged younger than 18 years with a MELD/PELD exception request who underwent LT between 2007 and 2018 were identified in the Scientific Registry of Transplant Recipients. Patients were stratified by waitlist partial pressure of arterial oxygen (PaO 2 ) to assess risk factors for waitlist mortality and post-LT survival. Among 3082 pediatric LT recipients included in the study, 124 patients (4%) received MELD/PELD exception points for HPS. Patients with HPS were a median age of 9 years (interquartile range: 6, 12 years), 54.8% were girls, and 54% were White. Most patients (87.9%) were listed with laboratory MELD/PELD scores <15. Waitlist mortality for patients with HPS exception points was rare and not different from patients without HPS. When stratified by pre-LT PaO 2 , hypoxemia severity was not associated with differences in 1-, 3-, or 5-year survival rates after LT ( p = 0.13). However, patients with HPS showed a slightly lower survival rate at 5 years compared with patients without HPS (88.7% vs. 93.4%; p = 0.04). MELD/PELD exceptions for children with HPS mitigated waitlist mortality, and recipients with HPS experienced excellent 5-year survival after LT, although slightly lower than in patients without HPS. Unlike adults with HPS, the severity of pre-LT hypoxemia in children does not impact post-LT survival. These data suggest that adult criteria for granting MELD/PELD exception points may not appropriately capture HPS severity in pediatric patients. Further prospective multicenter studies to examine the risk factors predicting negative survival outcomes in children with HPS are warranted.


Assuntos
Doença Hepática Terminal , Síndrome Hepatopulmonar , Transplante de Fígado , Adulto , Feminino , Humanos , Criança , Estados Unidos/epidemiologia , Idoso , Masculino , Doença Hepática Terminal/complicações , Doença Hepática Terminal/diagnóstico , Doença Hepática Terminal/cirurgia , Transplante de Fígado/efeitos adversos , Síndrome Hepatopulmonar/diagnóstico , Síndrome Hepatopulmonar/cirurgia , Estudos Retrospectivos , Índice de Gravidade de Doença , Políticas , Hipóxia/complicações , Listas de Espera
14.
Hepatology ; 75(6): 1579-1589, 2022 06.
Artigo em Inglês | MEDLINE | ID: mdl-34859474

RESUMO

Interest in anonymous nondirected living organ donation is increasing in the United States and a small number of transplantation centers are accumulating an experience regarding nondirected donation in living donor liver transplantation. Herein, we review current transplant policy, discuss emerging data, draw parallels from nondirected kidney donation, and examine relevant considerations in nondirected living liver donation. We aim to provide a consensus guidance to ensure safe evaluation and selection of nondirected living liver donors and a schema for just allocation of nondirected grafts.


Assuntos
Transplante de Rim , Transplante de Fígado , Obtenção de Tecidos e Órgãos , Humanos , Rim , Doadores Vivos , Estados Unidos
15.
Nanotechnology ; 34(24)2023 Mar 31.
Artigo em Inglês | MEDLINE | ID: mdl-36881902

RESUMO

Construction of various nanostructures with nanometre-scale precision through various DNA building blocks depends upon self-assembly, base-pair complementarity and sequence programmability. During annealing, unit tiles are formed by the complementarity of base pairs in each strand. Enhancement of growth of target lattices is expected if seed lattices (i.e. boundaries for growth of target lattices) are initially present in a test tube during annealing. Although most processes for annealing DNA nanostructures adopt a one-step high temperature method, multi-step annealing provides certain advantages such as reusability of unit tiles and tuneability of lattice formation. We can construct target lattices effectively (through multi-step annealing) and efficiently (via boundaries) by multi-step annealing and combining boundaries. Here, we construct efficient boundaries made of single, double, and triple double-crossover DNA tiles for growth of DNA lattices. Two unit double-crossover DNA tile-based lattices and copy-logic implemented algorithmic lattices were introduced to test the growth of target lattices on boundaries. We used multi-step annealing to tune the formation of DNA crystals during fabrication of DNA crystals comprised of boundaries and target lattices. The formation of target DNA lattices was visualized using atomic force microscopy (AFM). The borders between boundaries and lattices in a single crystal were clearly differentiable from AFM images. Our method provides way to construct various types of lattices in a single crystal, which might generate various patterns and enhance the information capacity in a given crystal.


Assuntos
DNA , Nanoestruturas , Conformação de Ácido Nucleico , DNA/química , Microscopia de Força Atômica , Nanoestruturas/química , Nanotecnologia/métodos
16.
Rev Med Virol ; 32(1): e2246, 2022 01.
Artigo em Inglês | MEDLINE | ID: mdl-33971048

RESUMO

Newcastle disease virus (NDV) has a worldwide distribution, causing lethal infection in a wide range of avian species. Affected birds develop respiratory, digestive and neurologic symptoms with profound immunosuppression. Mild systemic Newcastle disease (ND) infection restricted to the respiratory and neurological systems can be observed in humans and other non-avian hosts. Evidence of ND infection and its genome-based detection have been reported in Bovidae (cattle and sheep), Mustelidae (mink), Cercetidae (hamster), Muridae (mice), Leporidae (rabbit), Camelidae (camel), Suidae (pig), Cercophithecidae (monkeys) and Hominidae (humans). Owing to frequent ND outbreaks in poultry workers, individuals engaged in the veterinary field, including poultry production or evisceration and vaccine production units have constantly been at a much higher risk than the general population. A lethal form of infection has been described in immunocompromised humans and non-avian species including mink, pig and cattle demonstrating the capability of NDV to cross species barriers. Therefore, contact with infectious material and/or affected birds can pose a risk of zoonosis and raise public health concerns. The broad and expanding host range of NDV and its maintenance within non-avian species hampers disease control, particularly in disease-endemic settings.


Assuntos
Doença de Newcastle , Doenças das Aves Domésticas , Animais , Aves , Bovinos , Galinhas , Humanos , Camundongos , Doença de Newcastle/epidemiologia , Doença de Newcastle/prevenção & controle , Vírus da Doença de Newcastle/genética , Doenças das Aves Domésticas/epidemiologia , Saúde Pública , Coelhos , Ovinos , Suínos , Zoonoses/epidemiologia
17.
BMC Infect Dis ; 23(1): 872, 2023 Dec 12.
Artigo em Inglês | MEDLINE | ID: mdl-38087193

RESUMO

BACKGROUND: The corona virus SARS-CoV-2 is the causative agent of recent most global pandemic. Its genome encodes various proteins categorized as non-structural, accessory, and structural proteins. The non-structural proteins, NSP1-16, are located within the ORF1ab. The NSP3, 4, and 6 together are involved in formation of double membrane vesicle (DMV) in host Golgi apparatus. These vesicles provide anchorage to viral replicative complexes, thus assist replication inside the host cell. While the accessory genes coded by ORFs 3a, 3b, 6, 7a, 7b, 8a, 8b, 9b, 9c, and 10 contribute in cell entry, immunoevasion, and pathological progression. METHODS: This in silico study is focused on designing sequence specific siRNA molecules as a tool for silencing the non-structural and accessory genes of the virus. The gene sequences of NSP3, 4, and 6 along with ORF3a, 6, 7a, 8, and 10 were retrieved for conservation, phylogenetic, and sequence logo analyses. siRNA candidates were predicted using siDirect 2.0 targeting these genes. The GC content, melting temperatures, and various validation scores were calculated. Secondary structures of the guide strands and siRNA-target duplexes were predicted. Finally, tertiary structures were predicted and subjected to structural validations. RESULTS: This study revealed that NSP3, 4, and 6 and accessory genes ORF3a, 6, 7a, 8, and 10 have high levels of conservation across globally circulating SARS-CoV-2 strains. A total of 71 siRNA molecules were predicted against the selected genes. Following rigorous screening including binary validations and minimum free energies, final siRNAs with high therapeutic potential were identified, including 7, 2, and 1 against NSP3, NSP4, and NSP6, as well as 3, 1, 2, and 1 targeting ORF3a, ORF7a, ORF8, and ORF10, respectively. CONCLUSION: Our novel in silico pipeline integrates effective methods from previous studies to predict and validate siRNA molecules, having the potential to inhibit viral replication pathway in vitro. In total, this study identified 17 highly specific siRNA molecules targeting NSP3, 4, and 6 and accessory genes ORF3a, 7a, 8, and 10 of SARS-CoV-2, which might be used as an additional antiviral treatment option especially in the cases of life-threatening urgencies.


Assuntos
COVID-19 , SARS-CoV-2 , Humanos , SARS-CoV-2/genética , RNA Interferente Pequeno/genética , Filogenia , Perfilação da Expressão Gênica
18.
Pacing Clin Electrophysiol ; 46(10): 1222-1229, 2023 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-37708313

RESUMO

Left bundle branch area pacing (LBBAP) is an emerging technique in cardiac resynchronization therapy that shows promise in improving ventricular synchrony and clinical outcomes in patients with heart failure. However, the potential risk of coronary artery complications with LBBAP necessitates careful attention and management. This literature review explores the mechanisms, acute coronary events, and clinical implications associated with coronary artery complications in LBBAP. The mechanism of coronary injury with LBBAP involves mechanical trauma, altered coronary blood flow dynamics, and endothelial damage. Acute coronary events such as myocardial ischemia, acute coronary syndromes, and coronary artery dissection can occur during or after LBBAP, leading to significant clinical implications including the need for prompt intervention and potential impact on long-term outcomes. To avoid coronary injury and acute coronary syndrome with LBBAP, specific care strategies are recommended. These include thorough pre-procedural evaluation, expert operator technique, optimization of hemodynamics and ventricular synchrony, close monitoring for ischemic events, collaboration with cardiology specialists, and long-term follow-up. The clinical implications of coronary artery complications with LBBAP necessitate careful patient selection, informed decision-making, and a multidisciplinary approach. Future directions in this field include advancements in procedural techniques, technological innovations, risk stratification strategies, enhanced imaging modalities, research on mechanisms and prevention, and collaboration among stakeholders. By implementing these strategies and focusing on future advancements, healthcare providers can minimize the risk of coronary artery complications with LBBAP and optimize patient outcomes in cardiac resynchronization therapy.

19.
Langenbecks Arch Surg ; 409(1): 9, 2023 Dec 16.
Artigo em Inglês | MEDLINE | ID: mdl-38102305

RESUMO

BACKGROUND: Exenteration surgery for multi-visceral pelvic malignancy is a complex life-changing operation with high perioperative morbidity and mortality. Traditional open surgery has long been the standard approach for pelvic exenteration for achieving Ro resection which is the main aim of surgery. In the current era of minimally invasive surgery, robotic-assisted pelvic exenteration has provided a promising alternative, offering potential advantages in terms of improved oncological outcomes and enhanced postoperative recovery. This study aims to explore the feasibility of a robotic platform for locally advanced multi-visceral pelvic malignancy. METHODS: A retrospective review from the prospectively maintained robotic colorectal surgery database at University Hospital Coventry and Warwickshire (UHCW) Trust was performed. Demographic details and clinical and surgical details were documented from the case records. Data was analysed using SPSS version 22. RESULTS: Thirteen female patients diagnosed with primary or recurrent pelvic malignancy who underwent robotic pelvic exenteration at UHCW between February 2019 and April 2023 at UHCW were included. The mean age of our patients was 60.4 (± 10.1) years. Complete Ro resection was achieved in all 13 (100%) cases on final histopathology. The median length of hospital stay was 15 days after this extensive surgery. Grade 3 morbidity on Clavien-Dindo classification was observed in four (30.7%) patients, while zero percent 30-day mortality was experienced in this study. At a median follow-up of 21 (3-53) months, we observed tumor recurrence in three (23.7%) patients, while death in four (30.7%) patients. Only few studies have highlighted outcomes of robotic pelvic exenteration, and our results were quite comparable to them. CONCLUSION: Robotic-assisted pelvic exenteration for primary or recurrent pelvic malignancy is feasible with improved oncological and acceptable postoperative outcomes.


Assuntos
Exenteração Pélvica , Neoplasias Pélvicas , Neoplasias Retais , Procedimentos Cirúrgicos Robóticos , Humanos , Feminino , Pessoa de Meia-Idade , Idoso , Exenteração Pélvica/métodos , Neoplasias Pélvicas/cirurgia , Estudos de Viabilidade , Recidiva Local de Neoplasia/cirurgia , Recidiva Local de Neoplasia/patologia , Estudos Retrospectivos , Neoplasias Retais/cirurgia , Resultado do Tratamento
20.
J Oncol Pharm Pract ; : 10781552231184779, 2023 Jul 18.
Artigo em Inglês | MEDLINE | ID: mdl-37461352

RESUMO

The development of a successful oncology pharmacy system includes competency training, cost-efficient procurement, proper storage, preparation and administration of chemotherapy, and appropriate waste disposal. Low-middle-income countries such as Pakistan face several challenges within the realm of oncology pharmacy such as the unavailability of training programmes, resources and financial support, and inconsistencies in the safe handling of cytotoxic drugs. The Indus Hospital and Health Network (IHHN) is among the pioneers of oncology pharmacy practices in Pakistan, with a well-established Oncology Pharmacy Team and chemotherapy preparation in accordance with the United States Pharmacopeia 797 and 800 safety guidelines. The My Child Matters Grant was awarded by the Sanofi Espoir Foundation to the Department of Paediatric Hematology and Oncology at IHHN for holistic improvement in childhood cancer care through teaching, training and capacity building. Partnerships were formed with five public-sector paediatric oncology units nationwide. Initiatives were taken to improve oncology pharmacy practices including teaching and training courses, in-person assessment visits, and mentorship and liaison efforts. Despite prevailing challenges, promising improvements were noted at each centre. However, Pakistan needs to establish a national plan for childhood cancer with the creation of regional organisations for the training and monitoring of oncology pharmacists. Centralisation of pharmacy operations within hospitals is essential to maintain the availability, storage, preparation and administration standards of chemotherapy.

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