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1.
JCO Glob Oncol ; 10: e2300225, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38754051

RESUMO

PURPOSE: Colorectal cancer (CRC) in young adults is a rising concern in developing countries such as India. This study investigates clinicopathologic profiles, treatment patterns, and outcomes of CRC in young adults, focusing on adolescent and young adult (AYA) CRC in a low- and middle-income country (LMIC). METHODS: A retrospective registry study from January 2018 to December 2020 involved 126 young adults (age 40 years and younger) with CRC. Patient demographics, clinical features, tumor characteristics, treatment modalities, and survival outcomes were analyzed after obtaining institutional ethics committees' approval. RESULTS: Among 126 AYA patients, 62.70% had colon cancer and 37.30% had rectal cancer. Most patients (67%) were age 30-39 years, with no significant gender predisposition. Females had higher metastatic burden. Abdominal pain with obstruction features was common. Adenocarcinoma (65%) with signet ring differentiation (26%) suggested aggressive behavior. Limited access to molecular testing hindered mutation identification. Capecitabine-based chemotherapy was favored because of logistical constraints. Adjuvant therapy showed comparable recurrence-free survival in young adults and older patients. For localized colon cancer, the 2-year median progression-free survival was 74%, and for localized rectal cancer, it was 18 months. Palliative therapy resulted in a median overall survival of 33 months (95% CI, 18 to 47). Limited access to targeted agents affected treatment options, with only 27.5% of patients with metastatic disease receiving them. Chemotherapy was generally well tolerated, with hematologic side effect being most common. CONCLUSION: This collaborative study in an LMIC offers crucial insights into CRC in AYA patients in India. Differences in disease characteristics, treatment patterns, and limited access to targeted agents highlight the need for further research and resource allocation to improve outcomes in this population.


Assuntos
Neoplasias Colorretais , Humanos , Feminino , Masculino , Índia/epidemiologia , Adulto , Estudos Retrospectivos , Neoplasias Colorretais/patologia , Neoplasias Colorretais/terapia , Neoplasias Colorretais/mortalidade , Adulto Jovem , Resultado do Tratamento , Adolescente
2.
Drug Discov Today ; 29(6): 103993, 2024 Apr 25.
Artigo em Inglês | MEDLINE | ID: mdl-38670257

RESUMO

To introduce products in the US market, pharmaceutical companies must first obtain FDA clearance. Manufacturers might recall a product if it poses a risk of damage or violates FDA regulations. This study investigates the types, causes and consequences of recalls, as well as FDA participation and suitable recall strategies. We relied on the FDA website to gather recall data sets from 2012 to 2023, collecting information on the date of issuance, company and type of violation. The most frequent causes for recalls were sterility issues and inadequate compliance with current good manufacturing practices (cGMP). An examination of sterility recalls revealed two primary causes: a lack of assurance in sterility (accounting for 48% of recalls) and instances of non-sterility (making up 45% of recalls). A thorough examination of cGMP recalls revealed five primary types of violations: process control issues, inadequate storage practices, manufacturing problems, the presence of nitroso-amine impurities and concerns regarding stability. The findings demonstrate that sterility and cGMP compliance are FDA priorities. Pharmaceutical companies must, therefore, enhance quality compliance and create effective quality management systems that oversee the manufacturing process, quality control, personnel training and documentation to avoid these recalls. Companies should establish an internal compliance checklist and be prepared for the rectification process.

3.
Comput Biol Med ; 172: 108268, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38493598

RESUMO

Colonoscopy has attached great importance to early screening and clinical diagnosis of colon cancer. It remains a challenging task to achieve fine segmentation of polyps. However, existing State-of-the-art models still have limited segmentation ability due to the lack of clear and highly similar boundaries between normal tissue and polyps. To deal with this problem, we propose a region self-attention enhancement network (RSAFormer) with a transformer encoder to capture more robust features. Different from other excellent methods, RSAFormer uniquely employs a dual decoder structure to generate various feature maps. Contrasting with traditional methods that typically employ a single decoder, it offers more flexibility and detail in feature extraction. RSAFormer also introduces a region self-attention enhancement module (RSA) to acquire more accurate feature information and foster a stronger interplay between low-level and high-level features. This module enhances uncertain areas to extract more precise boundary information, these areas being signified by regional context. Extensive experiments were conducted on five prevalent polyp datasets to demonstrate RSAFormer's proficiency. It achieves 92.2% and 83.5% mean Dice on Kvasir and ETIS, respectively, which outperformed most of the state-of-the-art models.


Assuntos
Colonoscopia , Processamento de Imagem Assistida por Computador , Incerteza
4.
Indian J Orthop ; 58(2): 199-203, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38312907

RESUMO

Background: The role of prophylactic pinning of the contralateral hip in unilateral SCFE is well established in patients with risk factors for developing contralateral slip. The effect of prophylactic pinning on the growth and morphology of the hip is not well documented in the literature. We aimed to study the effect of prophylactic pinning on the residual growth and morphology of the proximal femur. Materials & Methods: The institutional database was searched for all unilateral SCFE cases for the period 2011 to 2020. A total of 171 unilateral SCFE cases were identified. All the radiographs were scanned and those patients who had follow-up X-rays till skeletal maturity were included in the study. Prophylactic pinning was performed using 6.5 mm fully threaded cancellous screws in supine position on a radiolucent table. The following radiological parameters were measured on the post-operative X-rays and at skeletal maturity: (i) neck length (NL), (ii) neck-shaft angle (NSA), (iii) femoral offset (FO), (iv) articulo-trochanteric distance (ATD) and (iv) tip-apex distance (TAD) by two different observers. Results: The mean age of the cohort was 13.7 years. ATD decreased from the mean value of 25.67 mm in post-operative radiographs to 20.84 mm in final follow-up radiographs. The NL, FO, and TAD were found to be increasing with age with mean final follow-up values of 55.35 mm, 41.41 mm, and 6.19 mm respectively compared to post-operative mean values of 50.95 mm, 37.4 mm, and 4.69 mm. There was no significant change in the neck-shaft angle. The mean post-operative NSA was 132.9° and it was 131.8° at final follow-up radiographs. Conclusion: Prophylactic pinning in unilateral SCFE does not stop the growth of the proximal femur completely. The ATD decreases in all the patients with prophylactic screw fixation probably due to the discrepancy in growth between the trochanteric apophysis and proximal femoral physis. The clinical effects of this subtle change in the morphology of the proximal femur need further investigation. Level of Evidence: Level IV Case series.

5.
Rom J Intern Med ; 62(2): 138-149, 2024 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-38153884

RESUMO

BACKGROUND: Acute Kidney Injury (AKI) is one of the most important causes of in-hospital mortality. The global burden of AKI continues to rise without a marked reduction in mortality. As such, the use of renal replacement therapy (RRT) forms an integral part of AKI management, especially in critically ill patients. There has been much debate over the preferred modality of RRT between continuous, intermittent and intermediate modes. While there is abundant data from Europe and North America, data from tropical countries especially the Indian subcontinent is sparse. Our study aims to provide an Indian perspective on the dialytic management of tropical AKI in a tertiary care hospital setup. METHODS: 90 patients of AKI, 30 each undergoing Continuous Renal Replacement Therapy (CRRT), Intermittent Hemodialysis (IHD) and SLED (Sustained Low-Efficiency Dialysis) were included in this prospective cohort study. At the end of 28 days of hospital stay, discharge or death, outcome measures were ascertained which included mortality, duration of hospital stay, recovery of renal function and requirement of RRT after discharge. In addition median of the net change of renal parameters was also computed across the three groups. Lastly, Kaplan Meier analysis was performed to assess the probability of survival with the use of each modality of RRT. RESULTS: There was no significant difference in the primary outcome of mortality between the three cohorts (p=0.27). However, CRRT was associated with greater renal recovery (p= 0.015) than IHD or SLED. On the other hand, SLED and IHD were associated with a greater net reduction in blood urea (p=0.004) and serum creatinine (p=0.053). CONCLUSION: CRRT, IHD and SLED are all complementary to each other and are viable options in the treatment of AKI patients.


Assuntos
Injúria Renal Aguda , Humanos , Injúria Renal Aguda/terapia , Injúria Renal Aguda/mortalidade , Masculino , Estudos Prospectivos , Feminino , Pessoa de Meia-Idade , Adulto , Terapia de Substituição Renal/métodos , Tempo de Internação/estatística & dados numéricos , Terapia de Substituição Renal Contínua , Resultado do Tratamento , Índia/epidemiologia , Idoso , Diálise Renal , Mortalidade Hospitalar , Terapia de Substituição Renal Intermitente , Creatinina/sangue , Estimativa de Kaplan-Meier
6.
Cureus ; 15(11): e48342, 2023 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-38060721

RESUMO

Avascular necrosis (AVN) of the femoral head is a chronic condition that primarily affects patients under the age of 40. While the precise etiology of AVN remains unknown, the condition is defined by a vascular insult to the femoral head's blood supply, which can cause the femoral head to collapse and then undergo degenerative alterations. As the condition worsens, the articular surface may collapse depending on how much of the femoral head is affected. When the femoral head collapses in these people, significant pain follows, and the condition seldom regresses. The patient came to Acharya Vinoba Bhave Hospital Outpatient Department of Orthopedics with a complaint of bilateral hip pain (right > left). The patient had a history of COVID-19, for which the patient took steroids of high dosage, and later he had a complaint of bilateral hip pain that was gradual and progressive, which affected the daily living activities of the patient for which the patient was operated for the bilateral hips. Postoperatively, the patient has been given a physiotherapy call, which included isometric exercises, stretching and strengthening exercises, which have shown recovery in the patient.

7.
J Orthop Case Rep ; 13(11): 117-121, 2023 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-38025374

RESUMO

Introduction: Congenital radioulnar synostosis is a rare deformity of the forearm characterized by a malformation of the proximal aspect of the radius and ulna. Various modalities of treatment options available include observation, excision of the synostosis and placing an interposition material, or performing derotation osteotomy. Several types of osteotomies at different forearm levels have been described in the literature. Case Report: A 5-year-old female presented with bilateral congenital radioulnar synostosis which was treated with percutaneous corrective osteotomy and Joshi's external stabilizing system fixator application. Conclusion: We describe the management of congenital radioulnar synostosis in a 5-year-old female child using a novel minimally invasive, single-staged procedure . This innovative technique provided the patient with a good functional outcome and she could return to her daily activities with a satisfactory range of motion.

8.
Lancet Haematol ; 10(12): e955-e965, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-38030318

RESUMO

BACKGROUND: Symptoms of anaemia due to clinically significant extravascular haemolysis can affect patients with paroxysmal nocturnal haemoglobinuria (PNH) treated with C5 inhibitors (ravulizumab or eculizumab). The aim of this study was to assess the efficacy and safety of danicopan (ALXN2040), an investigational, first-in-class, oral complement factor D inhibitor, as add-on therapy to ravulizumab or eculizumab in patients with PNH and clinically significant extravascular haemolysis. METHODS: ALPHA is an ongoing, international, phase 3, randomised, double-blind, placebo-controlled trial evaluating danicopan as add-on therapy to ravulizumab or eculizumab. Eligible patients were adults (age ≥18 years) with PNH and clinically significant extravascular haemolysis (haemoglobin ≤9·5 g/dL; absolute reticulocyte count ≥120 × 109/L) on ravulizumab or eculizumab for at least 6 months. Patients were randomly assigned (2:1) to danicopan or placebo added to ravulizumab or eculizumab for 12 weeks using an interactive response technology system. Randomisation was stratified based on transfusion history, haemoglobin, and patients enrolled from Japan. The initial oral danicopan dose was 150 mg three times a day; escalation to 200 mg three times a day was permitted based on clinical response. The infusion dose level of eculizumab (every 2 weeks) ranged from 900 mg to 1500 mg, and for ravulizumab (monthly or every 8 weeks) ranged from 3000 mg to 3600 mg. The primary endpoint was change in haemoglobin concentration from baseline to week 12. Here we present the protocol-prespecified interim analysis, planned when approximately 75% of participants were randomly assigned to treatment and completed or discontinued at 12 weeks. This trial is registered with ClinicalTrials.gov (NCT04469465). FINDINGS: Individuals were randomly assigned between Dec 16, 2020, and Aug 29, 2022. At data cutoff (June 28, 2022), 73 individuals were randomly assigned, received treatment, and were analysed for safety (danicopan, n=49; placebo, n=24). The protocol-prespecified interim efficacy analysis set included the first 63 participants (danicopan, n=42; placebo, n=21). At week 12, danicopan plus ravulizumab or eculizumab increased haemoglobin versus placebo plus ravulizumab or eculizumab (least squares mean [LSM] change from baseline: danicopan, 2·94 g/dL [95% CI 2·52 to 3·36]; placebo, 0·50 g/dL [-0·13 to 1·12]; LSM difference, 2·44 g/dL [1·69 to 3·20]; p<0·0001). Grade 3 adverse events in the danicopan group were increased alanine aminotransferase (two [4%] of 49 patients), leukopenia (one [2%]), neutropenia (two [4%]), cholecystitis (one [2%]), COVID-19 (one [2%]), increased aspartate aminotransferase (one [2%]), and increased blood pressure (one [2%]), and in the placebo group were anaemia (one [4%] of 24 patients), thrombocytopenia (one [4%]), and asthenia (one [4%]). The serious adverse events reported in the danicopan group were cholecystitis (one [2%] patient) and COVID-19 (one [2%]) and in the placebo group were anaemia and abdominal pain, both in one (4%) patient. There were no serious adverse events related to study drug or deaths reported in the study. INTERPRETATION: These primary efficacy and safety results show that danicopan as add-on treatment to ravulizumab or eculizumab significantly improved haemoglobin concentrations at week 12 with no new safety concerns, suggesting an improved benefit-risk profile in patients with PNH and clinically significant extravascular haemolysis. FUNDING: Alexion, AstraZeneca Rare Disease.


Assuntos
COVID-19 , Colecistite , Hemoglobinúria Paroxística , Adulto , Humanos , Adolescente , Hemoglobinúria Paroxística/complicações , Hemoglobinúria Paroxística/tratamento farmacológico , Hemólise , Hemoglobinas , Método Duplo-Cego
9.
BMJ Glob Health ; 8(10)2023 10.
Artigo em Inglês | MEDLINE | ID: mdl-37816536

RESUMO

INTRODUCTION: The effects of COVID-19 infection persist beyond the active phase. Comprehensive description and analysis of the post COVID sequelae in various population groups are critical to minimise the long-term morbidity and mortality associated with COVID-19. This analysis was conducted with an objective to estimate the frequency of post COVID sequelae and subsequently, design a framework for holistic management of post COVID morbidities. METHODS: Follow-up data collected as part of a registry-based observational study in 31 hospitals across India since September 2020-October 2022 were used for analysis. All consenting hospitalised patients with COVID-19 are telephonically followed up for up to 1 year post-discharge, using a prestructured form focused on symptom reporting. RESULTS: Dyspnoea, fatigue and mental health issues were reported among 18.6%, 10.5% and 9.3% of the 8042 participants at first follow-up of 30-60 days post-discharge, respectively, which reduced to 11.9%, 6.6% and 9%, respectively, at 1-year follow-up in 2192 participants. Patients who died within 90 days post-discharge were significantly older (adjusted OR (aOR): 1.02, 95% CI: 1.01, 1.03), with at least one comorbidity (aOR: 1.76, 95% CI: 1.31, 2.35), and a higher proportion had required intensive care unit admission during the initial hospitalisation due to COVID-19 (aOR: 1.49, 95% CI: 1.08, 2.06) and were discharged at WHO ordinal scale 6-7 (aOR: 49.13 95% CI: 25.43, 94.92). Anti-SARS-CoV-2 vaccination (at least one dose) was protective against such post-discharge mortality (aOR: 0.19, 95% CI: 0.01, 0.03). CONCLUSION: Hospitalised patients with COVID-19 experience a variety of long-term sequelae after discharge from hospitals which persists although in reduced proportions until 12 months post-discharge. Developing a holistic management framework with engagement of care outreach workers as well as teleconsultation is a way forward in effective management of post COVID morbidities as well as reducing mortality.


Assuntos
COVID-19 , Humanos , COVID-19/epidemiologia , Assistência ao Convalescente , Alta do Paciente , Sistema de Registros , Sobreviventes
10.
Mol Inform ; 42(12): e202300146, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-37885360

RESUMO

Predicting the taste of molecules is of critical importance in the food and beverages, flavor, and pharmaceutical industries for the design and screening of new tastants. In this work, we have built deep learning models to classify sweet, bitter, and umami molecules- the three basic tastes whose sensation is mediated by G protein-coupled receptors. An extensive dataset containing 1466 bitter, 1764 sweet, and 238 umami tastants was curated from existing literature. We analyzed the chemical characteristics of the molecules, with special focus on the presence of different functional groups. A deep neural network model based on molecular descriptors and a graph neural network model were trained for taste prediction. The class imbalance due to fewer umami molecules was tackled using special sampling techniques. Both models show comparable performance during evaluation, but the graph-based model can learn task-specific representations from the molecular structure without requiring handcrafted features. We further explain the deep neural network predictions using Shapley additive explanations. Finally, we demonstrated the applicability of the models by screening bitter, sweet, and umami molecules from a large food database. This study develops an in-silico approach to classify molecules based on their taste by leveraging the recent progress in deep learning, which can serve as a powerful tool for tastant design.


Assuntos
Aprendizado Profundo , Paladar/fisiologia , Receptores Acoplados a Proteínas G
11.
Ann Hematol ; 102(11): 2979-2988, 2023 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-37668788

RESUMO

The objective of this analysis was to identify risk factors for thromboembolic events (TE) in patients with paroxysmal nocturnal hemoglobinuria (PNH) who were not treated with C5 inhibitors. Patients with PNH and a history of ≥ 1 TE at enrollment in the International PNH Registry (NCT01374360; registration date, January 2011) were each matched with up to 5 patients without TE. Multivariable analysis was performed with the following variables: percentage glycosylphosphatidylinositol (GPI)-negative cells, high disease activity (HDA), non-TE major adverse vascular event history, and recent anticoagulation. Of 2541 eligible patients, 57 with TE and 189 matched controls were analyzed. Multivariable analysis (odds ratio [95% CI]) identified the following factors as being associated with increased thrombotic risk: patients with no history of TE (with recent anticoagulation, 9.30 [1.20-72.27]), patients with history of TE (with recent anticoagulation, 8.91 [0.86-92.62]; without recent anticoagulation, 5.33 [0.26-109.57]), patients with ≥ 30% GPI-negative granulocytes (≥ 30% to < 50%, 4.94 [0.54-45.32]; ≥ 50%, 1.97 [0.45-8.55]), or patients with lactate dehydrogenase (LDH) ratio ≥ 1.5 × upper limit of normal (ULN) plus ≥ 2 HDA criteria (2-3 criteria, 3.18 [0.44-23.20]; ≥ 4 criteria, 3.60 [0.38-33.95]). History of TE, ≥ 30% GPI-negative granulocytes, and LDH ratio ≥ 1.5 × ULN with ≥ 2 HDA criteria are TE risk factors for patients with PNH. These findings will aid physicians by providing important clinical and laboratory risk factors that can be used to identify and manage patients with PNH who are at risk of developing TE.

12.
Pediatrics ; 152(4)2023 10 01.
Artigo em Inglês | MEDLINE | ID: mdl-37712123

RESUMO

In 2020, the 21st Century Cures Act was enacted, mandating that patients have access to their electronic health record. This has the potential to benefit both patients and clinicians by increasing communication, transparency, and patient autonomy. However, with the onset of the act, a number of unintended consequences of the act have been identified. Presently, we discuss a case where documentation of intimate partner violence and the safety plan documented in a mother's electronic health record automatically populated her newborn's admission note. This confidential information inadvertently became accessible to the perpetrator: the infant's father.


Assuntos
Violência por Parceiro Íntimo , Humanos , Feminino , Lactente , Recém-Nascido , Registros Eletrônicos de Saúde
13.
J Endod ; 2023 Aug 26.
Artigo em Inglês | MEDLINE | ID: mdl-37640201

RESUMO

INTRODUCTION: The aim of this study was to assess the prevalence and severity of apical periodontitis (AP) in subjects with different stages of chronic kidney disease (CKD) and its association with systemic markers. METHODS: In this cross-sectional study, 105 patients with CKD (n = 35 each in the early, predialysis, and hemodialysis groups) and 105 healthy controls were included. The prevalence, number of teeth with AP (endodontic burden [EB]), and the severity of AP were recorded. High- sensitivity C-reactive protein, blood urea, and serum creatinine levels were also recorded. Logistic regression was applied to determine the possible association between CKD and AP in the study population, and linear regression was performed to predict the effect of AP on systemic markers in CKD patients. RESULTS: AP in at least 1 tooth was found in 75.2% of CKD patients and 40.9% of the controls (P < .05). CKD patients were 4 times more likely to have AP than controls (P < .05; odds ratio = 3.954; 95% confidence interval, 2.09-7.45). EB and the severity of AP were also significantly higher in CKD patients than the healthy controls (P < .05). Although higher values of EB and severe AP were observed with the progression of disease, the difference was not significant. The severity of AP was significantly associated with an increase in serum creatinine, blood urea, and a decrease in estimated glomerular filtration rate (P < .05) in CKD patients. CONCLUSIONS: AP was significantly more prevalent in the CKD group. The association between the severity of AP and CKD markers suggests that AP could possibly alter the progression of CKD. However, these findings do not establish a cause-and-effect relationship.

14.
Opt Express ; 31(13): 21784-21795, 2023 Jun 19.
Artigo em Inglês | MEDLINE | ID: mdl-37381267

RESUMO

We investigate the graded-index few-mode fiber (GI-FMF) to realize a 4-LP-mode (i.e. LP01, LP11, LP21, and LP02) fiber for mode-division-multiplexed transmission. This study optimizes the GI-FMF for both, first, for large effective indices differences (Δneff), and second, for low differential mode delay (DMD) between any two LP modes, for different optimized parameters. Thus, it shows that GI-FMF is suitable for both weakly-coupled few-mode fiber (WC-FMF) as well as strongly-coupled few-mode fiber (SC-FMF) via adjusting the profile parameter (α), refractive index difference between core and cladding (nco - nclad), and core radius (a). We report the optimized parameters for WC-GI-FMF with large effective indices difference (Δneff) of 0.6 × 10-3 and low |DMD| of 5.4 ns/km while the minimum effective mode area (Min.|Aeff|) is 80 µm2 and bending loss (BL) of the highest order mode is 0.005 dB/turn (much lower than 10 dB/turn) at a 10 mm bend radius. Here, we could break down the degeneracy between LP21 and LP02 mode, which remains a challenging task in GI-FMF. To the best of our knowledge, this is the lowest DMD (5.4 ns/km) ever reported for such a weakly-coupled (Δneff = 0.6 × 10-3) 4-LP-mode FMF. Similarly, we optimized the parameters for SC-GI-FMF with Δneff of 0.1 × 10-3 and the lowest DMD of 0.9 ns/km while Min.|Aeff| is ≫ 100 µm2 and BL of higher order mode is 6 dB/turn (< 10 dB/turn) at 10 mm bend radius. Further, we investigate narrow air trench-assisted SC-GI-FMF to reduce the DMD and achieve the lowest DMD of 16 ps/km for a 4-LP-mode GI-FMF with a minimum Δneff of 0.7 × 10-5.

15.
J Family Med Prim Care ; 12(2): 400-402, 2023 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-37091027

RESUMO

Hashimoto's encephalopathy is a rare life-threatening disease entity with clinical presentation like psychiatric as well as neurological diseases, thus making it a challenging clinical scenario for physicians leading to delay in diagnosis and management of the patient. The incidence overall is under-estimated because of low overall awareness about the disease. Here, we report a 44-year-old female who was being treated for psychiatric disorders because of clinical presentation like catatonia but ultimately was diagnosed with Hashimoto's encephalopathy and responded very well to steroids.

17.
Pediatr Res ; 93(2): 287-290, 2023 01.
Artigo em Inglês | MEDLINE | ID: mdl-36385519

RESUMO

IMPACT: Provide an overview of bronchopulmonary dysplasia, its definitions, and their shortcomings. Explore the areas where machine learning may be used to further our understanding of bronchopulmonary dysplasia.


Assuntos
Displasia Broncopulmonar , Recém-Nascido , Humanos , Inteligência Artificial
18.
J Orthop Case Rep ; 12(3): 91-94, 2022 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-36199937

RESUMO

Introduction: Traumatic dislocations of the elbow are a rare injury in children. Concomitant elbow dislocations and lateral condyle fractures are even rarer. There is a wide variability in the outcomes of these injuries as there is no consensus regarding its management. We report one such rare case in a 7-year-old child. Case Report: A 7-year-old child was brought to the emergency room with an alleged history of fall on outstretched hand sustaining injury to the left elbow. He was diagnosed with a posteromedial elbow dislocation, along with fracture of the lateral condyle. The patient underwent emergency reduction of the elbow under appropriate anesthesia following which there was persistence of varus and valgus instability, for which the lateral condyle was fixed with a standard pinning through a lateral approach with three Kirschner wires. The patient was immobilized for 6 weeks in a plaster, after which mobilization was started. At 3 months follow-up, the patient showed good functional outcome with full range of motion. Conclusion: We report an exceedingly rare case of concomitant elbow dislocation and fracture of the lateral condyle in children. If emergent reduction of the dislocation and anatomic reduction of the fracture is achieved, satisfactory outcomes can be expected. Delayed recovery of the elbow motion is common, but full range of motion can be expected in the long run.

19.
J Mater Chem B ; 10(41): 8407-8418, 2022 10 26.
Artigo em Inglês | MEDLINE | ID: mdl-36250253

RESUMO

Cell sheet technology (CST) is a fascinating scaffoldless tissue engineering technique to generate a physiologically representative tissue replacement from autologous sources. As compared to conventional enzymatic cell harvesting methods, CST enables the preservation of important cell-to-cell junctions and extracellular matrix (ECM) components. However, covalent grafting methods are often employed for CST. In this study, a series of triblock copolymers with a hydrophobic and biocompatible poly[(R)-3-hydroxybutyrate] (PHB) central block flanked by varying lengths of terminal poly(N-isopropylacrylamide) (PNIPAAm) blocks (PNIPAAm-PHB-PNIPAAm) was synthesized via atom transfer radical polymerization of NIPAAm. The thermoresponsive triblock copolymers were explored as a non-covalent surface coating for culturing and detaching bovine corneal endothelial cell (BCEC) sheets. Aqueous solutions of the triblock copolymers produced thermosensitive micelles which can be drop-casted on glass substrates, resulting in a temperature-responsive surface. Importantly, incorporating a central hydrophobic PHB block enabled the anchoring of the coating to the bare substrate and enhanced the proliferation rate of the BCECs studied. Effective detachment of an intact cell sheet was also demonstrated via a cooling treatment at 4 °C for 20 min, and the viability of the detached cell sheet was found to be unaffected by the cooling. This work may potentially inspire more studies involving the non-covalent thermoresponsive polymer coatings for corneal tissue engineering applications.


Assuntos
Micelas , Polímeros , Bovinos , Animais , Ácido 3-Hidroxibutírico , Polímeros/química , Hidroxibutiratos , Células Endoteliais
20.
Cureus ; 14(9): e29523, 2022 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-36312627

RESUMO

A limited soft tissue injury known as Morel-Lavallée syndrome is brought on by the violent segregation of the dermis and subcutaneous tissue layer. Shear injury causes perforating arteries and lymphatics to burst, potentially releasing serosanguinous fluid, blood, and necrotic fat into the area. Morel-Lavallée lesions (MLL) can be accompanied by pelvic or acetabular fractures or by blunt trauma without a fracture. MLL is distinguished by enlargement, tightness, and tenderness of tissue. The skin around the lesion is frequently associated with diminished sensory perception. Plain radiography, USG, CT scan, and MRI are some of the imaging modalities that can be utilized. MLLs have a distinct location in the US, anterior to the muscle layer and posterior to the hypodermis. Morel-Lavallée lesions are frequently associated with complications as a result of delayed or inappropriate diagnosis. Surgical drainage and debridement are the standard surgical treatments for the lesion. Physiotherapy rehabilitation helps in reducing pain and regaining functional activities after the syndrome. This documentation includes the case of a 55-year-old male patient who had complaints of difficulty in moving their left leg and inability to walk. The patient was diagnosed with Morel-Lavallée syndrome left thigh and was advised physiotherapy. This study found that by employing strengthening exercises and other physical therapy interventions, after four weeks of therapy, joint degree of movement, muscular strength, and daily functioning, as well as cardiovascular and pulmonary capabilities all significantly improved.

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