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1.
J Clin Med ; 13(17)2024 Aug 23.
Artículo en Inglés | MEDLINE | ID: mdl-39274211

RESUMEN

Background: We report on the 12-month safety and efficacy outcomes of a new non-valved glaucoma drainage device, the eyePlate-300 (Rheon Medical, Lausanne, Switzerland), in managing refractory glaucoma. Methods: A retrospective review was conducted on consecutive patients over 18 who underwent glaucoma drainage device (GDD) surgery with the eyePlate-300 after a single glaucoma consultation between February 2020 and April 2021, with at least 12 months of documented post-op follow-up. Results: A total of 16 eyes from 15 patients were included. Complete success was observed in 47% of patients and overall success in 83%. The mean IOP decreased from 31.5 mm Hg to 10.7 mm Hg (67% reduction from baseline), and the number of IOP-lowering drops was reduced from 3.1 to 0.7 at one year. The mean BCVA remained stable. No additional IOP-lowering surgeries were required, and no severe sight-threatening complications were noted. Conclusions: The initial one-year results suggest that the eyePlate could be a safe and effective device for reducing IOP in an ethnically diverse refractory glaucoma population. Further follow-up is necessary to determine the long-term safety and efficacy.

2.
JBJS Case Connect ; 14(3)2024 Jul 01.
Artículo en Inglés | MEDLINE | ID: mdl-39270040

RESUMEN

CASE: Fourteen-year-old boy presented with bilateral proximal humerus lesser tuberosity avulsions after swinging between 2 desks. Injuries were not visualized on radiographs but identified on magnetic resonance imaging. He underwent bilateral open reduction and internal fixation of the bony avulsions. Following repair, he returned to full activities, including sports, without limitations. CONCLUSION: Lesser tuberosity avulsions are rare injuries in the pediatric population that can be missed. Our case is a low energy noncontact mechanism resulting in bilateral injury, highlighting the importance of having a high index of suspicion for this diagnosis in adolescent patients with shoulder pain with normal radiographs.


Asunto(s)
Fracturas del Hombro , Humanos , Masculino , Adolescente , Fracturas del Hombro/diagnóstico por imagen , Fracturas del Hombro/cirugía , Fijación Interna de Fracturas/métodos , Imagen por Resonancia Magnética , Fracturas por Avulsión/diagnóstico por imagen , Fracturas por Avulsión/cirugía
3.
Cureus ; 16(8): e66360, 2024 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-39246862

RESUMEN

Purpose Video laryngoscopes were being used more often in cases of potentially difficult airways. The Karl Storz video stylet offered clear advantages over conventional laryngoscopes for patients with cervical spine fractures. This study aimed to compare the performance of the C-MAC video laryngoscope with the new Karl Storz video stylet in patients with simulated cervical fracture injuries. Material and methods The study, approved by the Board of Studies and the Ethical Committee of Jawaharlal Nehru Medical College and Hospital in Aligarh, involved 50 patients undergoing operative procedures under general anaesthesia. It was a prospective randomised controlled study on patients aged 20-60, weighing 30-80 kg, and classified as American Society of Anesthesiologists (ASA) Grades I and II, admitted for elective operative procedures. Patients were randomly assigned to two groups for intubation using different devices: the control group (N = 25) was intubated with the C-MAC (Mac blade) video laryngoscope (CM), and the study group (N = 25) was intubated with the Karl Storz video stylet (VS). The anaesthetic procedure involved a detailed pre-anesthetic check-up for all patients, including a medical history review, physical examination, and necessary tests based on age. Standard monitoring and pre-medication were administered uniformly. Anesthesia was induced and intubation was attempted using appropriate devices, following manual stabilisation of the neck. Parameters such as intubation attempts, time taken, failures, hemodynamic changes, and complications were recorded throughout the procedure. If intubation was unsuccessful, alternative measures were taken, and the operative procedure proceeded. Results The intubation success rates were compared between the two groups, CM and VS. In the CM group, all 25 patients (100%) were successfully intubated on the first attempt, while in the VS group, 23 patients (92%) were successfully intubated on the first attempt, and two patients (8%) required two attempts. The difference in the distribution of the number of attempts between the two groups was not statistically significant (p = 0.4915). The mean intubation time in the CM group was 27.24 ± 2.16 seconds, while in the VS group, the mean intubation time was significantly longer at 30.84 ± 6.81 seconds, with a statistically significant difference (p = 0.0105). Adjustment manoeuvres were required in only 4% of patients in the CM group compared to 0% in the VS group, although this difference was not statistically significant. The occurrence of blood on the device during intubation was recorded, and the distribution of patients with blood on the device among the two groups did not show a statistically significant difference (p = 0.617). Conclusion This study compared the effectiveness of two intubation devices. The C-MAC video laryngoscope showed a significantly higher rate of first-attempt successful intubations and required fewer attempts compared to the Karl Storz video stylet. The C-MAC also had shorter intubation times compared to the Karl Storz device. However, the Karl Storz video stylet demonstrated comparable performance to the C-MAC video laryngoscope in clinical settings, with both devices having similar safety profiles and minimal complications.

4.
Life Sci ; 354: 122966, 2024 Oct 01.
Artículo en Inglés | MEDLINE | ID: mdl-39147320

RESUMEN

Aberrant activation of the NLRP3 inflammasome is recognized to induce a chronic inflammatory response in the liver, ultimately leading to hepatic fibrosis. HSP90 is suggested to regulate NLRP3 activation and its downstream signaling. This study is the first to explore the potential therapeutic role of pimitespib in mitigating liver fibrosis in rats. The results of the study revealed that pimitespib effectively suppressed hepatic inflammation and fibrogenesis by modulating HSP90's control over the NFκB/NLRP3/caspase-1 axis. In vitro experiments demonstrated that pimitespib reduced LDH levels and increased hepatocyte survival, whereas in vivo, it prolonged the survival of rats with hepatic fibrosis. Additionally, pimitespib exhibited improvements in the function and microscopic characteristics of rat livers. Pimitespib effectively inhibited NFκB, which serves as the priming signal for NLRP3 activation. Pimitespib's inhibitory effect on NLRP3, identified as an HSP90 client protein, plays a central role in the observed anti-fibrotic effect. The simultaneous inhibition of both priming and activation signals of NLRP3 by pimitespib led to a reduction in caspase-1 activity and subsequent suppression of the N-terminal fragment of gasdermin D, ultimately constraining hepatocyte pyroptotic cell death. These diverse effects were associated with a decrease in the transcription of inflammatory mediators IL-1ß, IL-18, and TNF-α, as well as the fibrogenic mediators TGF-ß, TIMP-1, PDGF-BB, and Col1a1. Moreover, pimitespib induced the expression of HSP70, which could further contribute to the repression of fibrosis development. In summary, our findings provide an evolutionary perspective on managing liver fibrosis, positioning pimitespib as a promising candidate for anti-inflammatory and antifibrotic therapy.


Asunto(s)
Caspasa 1 , Proteínas HSP90 de Choque Térmico , Cirrosis Hepática , FN-kappa B , Proteína con Dominio Pirina 3 de la Familia NLR , Animales , Proteína con Dominio Pirina 3 de la Familia NLR/metabolismo , Ratas , Cirrosis Hepática/metabolismo , Cirrosis Hepática/patología , Cirrosis Hepática/tratamiento farmacológico , Proteínas HSP90 de Choque Térmico/metabolismo , FN-kappa B/metabolismo , Masculino , Caspasa 1/metabolismo , Transducción de Señal , Ratas Sprague-Dawley , Inflamasomas/metabolismo , Sulfonamidas/farmacología , Hepatocitos/metabolismo , Hepatocitos/patología , Hepatocitos/efectos de los fármacos
5.
Int J Surg Case Rep ; 122: 110176, 2024 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-39153337

RESUMEN

INTRODUCTION AND IMPORTANCE: Redo aortic valve replacement in twin pregnancy presents significant challenges because of the elevated risks for both maternal and fetal health. Mortality rates range from 12 % to 21 % in specialised centres, with previous cardiac surgeries further elevating the risk. Pregnancy complicates cardiac surgery, with fetal mortality rates as high as 16-33 %. PRESENTATION OF CASE: A 31-year-old woman, 15 weeks pregnant with twins and with a history of mechanical aortic valve replacement, presented with worsening breathlessness and grade III dyspnoea. Echocardiography revealed severe valve obstruction, necessitating redo-aortic valve replacement and posterior aortic root enlargement. Despite intraoperative challenges, including ventricular fibrillation and postoperative heart block, she underwent successful surgery and pacemaker implantation, with both mother and fetuses remaining stable. DISCUSSION: Optimal timing of surgery is crucial, considering fetal developmental vulnerability in the first trimester and maternal cardiac workload in the third trimester. Second-trimester risks are comparable to non-pregnant patients. A limited understanding of fetal-placental perfusion during bypass necessitates cautious management strategies, with emerging techniques like pulsatile perfusion showing promise. Anaesthesia selection prioritises fetal safety while monitoring fetal distress during surgery remains challenging. To achieve successful outcomes for both mother and babies in a twin pregnancy undergoing a redo aortic valve replacement, careful timing, appropriate surgical techniques, and meticulous perioperative care are essential. CONCLUSION: A multidisciplinary approach is crucial for managing twin pregnancy following redo aortic valve surgery. Careful planning, close monitoring, and specialised surgical and anaesthetic techniques are key to minimising risks to both mother and fetus.

6.
Photodiagnosis Photodyn Ther ; 49: 104306, 2024 Aug 23.
Artículo en Inglés | MEDLINE | ID: mdl-39182662

RESUMEN

AIM: To assess the effect of CAD surface conditioners and their effect on Ra and SBS of tooth-colored filling material adhered to CAD surface with adhesive modified with 1 % Sep-NPs. Also, the DC of modified EA and its effect on the rheological properties. METHODS: Ninety human molars with carious extension up to the middle third of occlusal dentin were included. The teeth were then arbitrarily allocated into three groups based on the type of surface conditioning received (n = 30) Group 1 (PA), Group 2 (FS laser), and Group 3 (Ery PS). Ten samples from each group underwent Ra analysis using a stylus profiler. Twenty samples from each cohort were distributed into two subcategories based on the application of unmodified EA (A) and Sep-infiltrated EA (B). Composite restoration was built followed by SBS and failure mode analysis. Scanning electron microscopy and Energy dispersive X-ray EDX were assessed of sepiolite NPs. Degree of conversion (DC) and rheological analysis of the modified adhesive and unmodified adhesive were also performed. One-way analysis of variance (ANOVA) and the Tukey post hoc test were employed to conduct comparisons between the different groups. RESULTS: The highest score of Ra and bond strength were displayed by Group 1B (PA + Sep-NPs filled EA) (17.32 ± 1.43 MPa) samples. Nevertheless, the lowest values were established by Group 3A (Ery-PS + EA) (13.45 ± 0.80 MPa) treated teeth. An increase in Ra resulted in a rise in SBS.DC decreased with the incorporation of 1 % Sep-NPs in EA compared to unmodified EA. CONCLUSION: Conditioning of CAD with PA and FS laser shows high surface roughness and favorable adhesion to experimental adhesive modified with 1 % Sep-NPs. Modified adhesive with 1 % Sep-NPs decreases DC and rheological properties.

7.
Life Sci Alliance ; 7(11)2024 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-39122555

RESUMEN

Reduction in muscle contractile force associated with many clinical conditions incurs serious morbidity and increased mortality. Here, we report the first evidence that JAK inhibition impacts contractile force in normal human muscle. Muscle biopsies were taken from patients who were randomized to receive tofacitinib (n = 16) or placebo (n = 17) for 48 h. Single-fiber contractile force and molecular studies were carried out. The contractile force of individual diaphragm myofibers pooled from the tofacitinib group (n = 248 fibers) was significantly higher than those from the placebo group (n = 238 fibers), with a 15.7% greater mean maximum specific force (P = 0.0016). Tofacitinib treatment similarly increased fiber force in the serratus anterior muscle. The increased force was associated with reduced muscle protein oxidation and FoxO-ubiquitination-proteasome signaling, and increased levels of smooth muscle MYLK. Inhibition of MYLK attenuated the tofacitinib-dependent increase in fiber force. These data demonstrate that tofacitinib increases the contractile force of skeletal muscle and offers several underlying mechanisms. Inhibition of the JAK-STAT pathway is thus a potential new therapy for the muscle dysfunction that occurs in many clinical conditions.


Asunto(s)
Inhibidores de las Cinasas Janus , Contracción Muscular , Músculo Esquelético , Piperidinas , Pirimidinas , Humanos , Piperidinas/farmacología , Pirimidinas/farmacología , Contracción Muscular/efectos de los fármacos , Músculo Esquelético/efectos de los fármacos , Músculo Esquelético/metabolismo , Inhibidores de las Cinasas Janus/farmacología , Masculino , Pirroles/farmacología , Femenino , Adulto , Transducción de Señal/efectos de los fármacos , Persona de Mediana Edad , Quinasas Janus/metabolismo , Fibras Musculares Esqueléticas/efectos de los fármacos , Fibras Musculares Esqueléticas/metabolismo
8.
Cureus ; 16(7): e65640, 2024 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-39205787

RESUMEN

BACKGROUND: Orthopedic traumatology, a vital component of orthopedic surgery, poses significant challenges in managing complications and necessitating revision surgeries. These challenges impact clinical outcomes, healthcare economics, and patient well-being. OBJECTIVE: This study aimed to provide insights that informed clinical decision-making and improved patient outcomes by thoroughly examining the range of complications encountered in orthopedic traumatology. Specifically, the research focused on the indications, techniques, and outcomes of revision surgeries. METHODOLOGY: This retrospective cohort research looked at orthopedic traumatology complications and revision procedures over a thorough two-year period from March 2021 to March 2023 at Hayatabad Medical Complex in Peshawar, Pakistan. The following information was gathered from 316 patients receiving orthopedic surgery for traumatic injuries: demographics, kinds of trauma, surgical methods, complications, indications, methods, and results of revision surgery. For data analysis, chi-square tests and descriptive statistics were used, with the goal of finding patterns and correlations within the research population. RESULTS: The average age of the 316 patients was 42.5 years, and 64.76% of them were male (n = 192). The most frequent kind of trauma (n = 218; 69.01%) was fractures, which were mostly brought on by falls (n = 147; 46.52%). The most common surgical method (n = 138; 43.67%) was found to be internal fixation, which was followed by external fixation (n = 67; 21.20%). The most common complication (n = 78; 24.68%) was surgical site infection, which resulted in revision procedures mostly for infection (n = 68; 21.52%) and implant failure (n = 56; 17.72%). Debridement was the most often used revision approach (n = 95; 30.10%), and it was substantially correlated with surgical outcomes, such as increased function (31%) and full resolution (36%). CONCLUSION: This research emphasizes the need to maximize patient outcomes for improved well-being and highlights the crucial role that careful care plays in managing complications and revision operations in orthopedic traumatology.

9.
Lancet Glob Health ; 2024 Aug 20.
Artículo en Inglés | MEDLINE | ID: mdl-39178879

RESUMEN

In the south Asian region, delivering non-communicable disease (NCD) prevention and control services through existing primary health-care (PHC) facilities is urgently required yet currently challenging. As the first point of contact with the health-care system, PHC offers an ideal window for prevention and continuity of care over the life course, yet the implementation of PHC to address NCDs is insufficient. This review considers evidence from five south Asian countries to derive policy-relevant recommendations for designing integrated PHC systems that include NCD care. Findings reveal high political commitment but poor multisectoral engagement and health systems preparedness for tackling chronic diseases at the PHC level. There is a shortage of skilled human resources, requisite infrastructure, essential NCD medicines and technologies, and dedicated financing. Although innovations supporting integrated interventions exist, such as innovations focusing on community-centric approaches, scaling up remains problematic. To deliver NCD services sustainably, governments must aim for increased financing and a redesign of PHC service.

10.
bioRxiv ; 2024 Jul 26.
Artículo en Inglés | MEDLINE | ID: mdl-39091846

RESUMEN

Nonribosomal peptide synthetases (NRPSs) produce diverse natural products including siderophores, chelating agents that many pathogenic bacteria produce to survive in low iron conditions. Engineering NRPSs to produce diverse siderophore analogs could lead to the generation of novel antibiotics and imaging agents that take advantage of this unique iron uptake system in bacteria. The highly pathogenic and antibiotic-resistant bacteria Acinetobacter baumannii produces fimsbactin, an unusual branched siderophore with iron-binding catechol groups bound to a serine or threonine side chain. To explore the substrate promiscuity of the assembly line enzymes, we report a structure-guided investigation of the stand-alone aryl adenylation enzyme FbsH. We report on structures bound to its native substrate 2,3-dihydroxybenzoic acid (DHB) as well as an inhibitor that mimics the adenylate intermediate. We produced enzyme variants with an expanded binding pocket that are more tolerant for analogs containing a DHB C4 modification. Wild-type and mutant enzymes were then used in an in vitro reconstitution analysis to assess the production of analogs of the final product as well as several early-stage intermediates. This analysis shows that some altered substrates progress down the fimsbactin assembly line to the downstream domains. However, analogs from alternate building blocks are produced at lower levels, indicating that selectivity exists in the downstream catalytic domains. These findings expand the substrate scope of producing condensation products between serine and aryl acids and identify the bottlenecks for chemoenzymatic production of fimsbactin analogs.

11.
J Neural Eng ; 2024 Aug 16.
Artículo en Inglés | MEDLINE | ID: mdl-39151457

RESUMEN

OBJECTIVE: Electroencephalography (EEG) has evolved into an indispensable instrument for estimating cognitive workload in various domains. ML and DL techniques have been increasingly employed to develop accurate workload estimation and classification models based on EEG data. The goal of this systematic review is to compile the body of research on EEG workload estimation and classification using ML and DL approaches. METHODS: The PRISMA procedures were followed in conducting the review, searches were conducted through databases at SpringerLink, ACM Digital Library, IEEE Explore, PUBMED, and Science Direct from the beginning to the end of February 16, 2024. Studies were selected based on predefined inclusion criteria. Data were extracted to capture study design, participant demographics, EEG features, ML/DL algorithms, and reported performance metrics. RESULTS: Out of the 125 items that emerged, 33 scientific papers were fully evaluated. The study designs, participant demographics, and EEG workload measurement and categorization techniques used in the investigations differed. SVM, CNN, and hybrid networks are examples of ML and DL approaches that were often used. Analyzing the accuracy scores achieved by different ML/DL models. Furthermore, a relationship was noted between sample frequency and model accuracy, with higher sample frequencies generally leading to improved performance. The percentage distribution of ML/DL methods revealed that SVMs, CNNs, and RNNs were the most commonly utilized techniques, reflecting their robustness in handling EEG data. SIGNIFICANCE: The comprehensive review emphasizes how ML may be used to identify mental workload across a variety of disciplines using EEG data. Optimizing practical applications requires multimodal data integration, standardization efforts, and real-world validation studies. These systems will also be further improved by addressing ethical issues and investigating new EEG properties, which will improve human-computer interaction and performance assessment.

12.
J Appl Physiol (1985) ; 137(3): 569-580, 2024 Sep 01.
Artículo en Inglés | MEDLINE | ID: mdl-38990977

RESUMEN

Electronic nicotine delivery systems, often referred to as e-cigarettes, are popular tobacco products frequently advertised as safer alternatives to traditional cigarettes despite preliminary data suggesting a potential negative cardiovascular impact. Cardiorespiratory fitness is a critical cardiovascular health marker that is diminished in individuals who consume traditional tobacco products. Whether the use of e-cigarettes impacts cardiorespiratory fitness is currently unknown. Thus, the purpose of this study was to investigate the impact of regular e-cigarette use on cardiorespiratory fitness in young healthy adults. Twenty-six users of e-cigarettes (ECU, 13 males, and 13 females; age: 24 ± 3 yr; e-cigarette usage 4 ± 2 yr) and 16 demographically matched nonusers (NU, 6 males, and 10 females; age: 23 ± 3 yr) participated in this study. Cardiorespiratory fitness was measured by peak oxygen consumption (V̇o2peak) during a cardiopulmonary exercise test. Measurements of chronotropic response, hemodynamic, oxygen extraction, and utilization were also evaluated. Our results suggest that regular users of e-cigarettes exhibited significantly lower peak oxygen consumption when compared with nonusers, even when controlled by fat-free mass and lean body mass. Hemodynamic changes were not different between both groups during exercise, whereas lower chronotropic responses and skeletal muscle oxygen utilization were observed in users of e-cigarettes. Results from the present study demonstrate that young, apparently healthy, regular users of e-cigarettes exhibit significantly reduced cardiorespiratory fitness, lower chronotropic response, and impaired skeletal muscle oxygen utilization during exercise. Overall, our findings contribute to the growing body of evidence that supports adverse effects of regular e-cigarette use on cardiovascular health.NEW & NOTEWORTHY E-cigarettes are tobacco products frequently used by youth and young adults. Little is known about the long-term health effects of their prolonged use. Results from the present study demonstrate that young, apparently healthy, regular users of e-cigarettes exhibit significantly reduced cardiorespiratory fitness, a marker of cardiovascular health and a predictor of all-cause mortality. We also identified that the young users of e-cigarettes present with lower chronotropic response and impaired skeletal muscle oxygen utilization during exercise.


Asunto(s)
Capacidad Cardiovascular , Sistemas Electrónicos de Liberación de Nicotina , Consumo de Oxígeno , Humanos , Capacidad Cardiovascular/fisiología , Masculino , Femenino , Adulto , Adulto Joven , Consumo de Oxígeno/fisiología , Prueba de Esfuerzo/métodos , Vapeo/efectos adversos , Ejercicio Físico/fisiología , Frecuencia Cardíaca/fisiología , Frecuencia Cardíaca/efectos de los fármacos
13.
Cureus ; 16(6): e63094, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-39055431

RESUMEN

Background and objective Khyber Pakhtunkhwa is the third largest province of Pakistan by population and has a high incidence of ischemic stroke. We evaluated all patients who presented to the largest tertiary care facility in the province to learn about the current trends in the management of ischemic stroke and explore future opportunities in this regard.  Materials and methods This prospective observational research was carried out at the Lady Reading Hospital-Medical Teaching Institute (LRH-MTI), Peshawar, in the province of Khyber Pakhtunkhwa (KP). The hospital's ethics committee granted the required permissions for the research. Any patient with an ischemic stroke diagnosis, regardless of age, met the inclusion criteria if their diagnosis was confirmed by clinical assessment, imaging (such as CT or MRI), or both. The clinical parameters that were evaluated included the duration since the patient's reported onset of symptoms, the patient's first mode of transfer to the hospital (such as ambulance, private vehicle, or other means), and the date and time of admission to the hospital. A structured database containing the data was utilized, and IBM SPSS Statistics for Windows, Version 25 (released 2017; IBM Corp., Armonk, New York, United States) was used for statistical analysis. Results One hundred fifty-six stroke patients were diagnosed throughout the study period, with 76 of them having an ischemic stroke, accounting for 49% of all stroke cases. Approximately 43% (n = 33) of the patients were from Peshawar, with the remaining patients coming from adjacent districts. There was only a small percentage (19%, n = 15) of patients who were eligible for any thrombolytic therapy, and the majority (93%) were brought by private vehicles. There was a significant association between age and arrival in the emergency room (p = 0.003). Conclusion The study reveals subpar ischemic stroke management in Khyber Pakhtunkhwa, requiring coordinated efforts, modernization of treatment methods, and increased public awareness to improve patient outcomes.

14.
Eye (Lond) ; 2024 Jul 26.
Artículo en Inglés | MEDLINE | ID: mdl-39060343

RESUMEN

PURPOSE: To evaluate the clinical efficacy and safety of asynchronous virtual post-operative assessments following vitreoretinal surgery and procedures compared to traditional face-to-face assessments in a high-volume tertiary eye centre. METHODS: Prospective comparative clinical series study of patients who had undergone vitreoretinal surgery or post-laser retinopexy. Patients received both virtual and face-to-face assessments. The virtual assessment included clinical questions, visual acuity measurement, and virtual retinal imaging using ultra-wide field (UWF) imaging and macular optical coherence tomography (OCT). Face-to-face assessments involved standard clinical examinations. RESULTS: We included 142 patients undergoing a variety of vitreoretinal procedures. We showed comparable results between virtual and face-to-face assessments in both, post-operative and post-laser treatments. UWF imaging with macular OCT demonstrated potential for effective virtual post-operative assessment. The virtual assessment has a sensitivity of 91% and specificity of 100% for detecting retinal detachments with 100% specificity and 100% sensitivity for detecting new retinal tears or insufficient laser treatment. CONCLUSIONS: The implementation of asynchronous virtual post-operative assessments following a variety of vitreoretinal procedures is a promising alternative to traditional face-to-face assessments. Virtual assessments using UWF imaging and macular OCT showed high sensitivity and specificity. Virtual post-operative clinics offer the potential to improve patient access and decrease the clinical burden, especially with the continuing evolution of telemedicine technologies and imaging modalities.

15.
J Hematol ; 13(3): 128-136, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38993735

RESUMEN

Systemic mastocytosis (SM) is a rare type of myeloproliferative neoplasm characterized by abnormal proliferation and infiltration of different tissue by clonal mast cells. The uncontrolled proliferation and activation of mast cells trigger the release of vasoactive and inflammatory mediators, resulting in a cascade of systemic symptoms. Around 95% of SM arise from a gain-of-function mutation at the KIT gene, specifically at codon 816, which highlights its essential role in SM and makes it an attractive target for therapy. Although KIT-negative SM is exceptionally rare, the increased number of cases documented in the literature makes it an intriguing dimension of this disorder. The reported clinical manifestations of KIT-negative SM are widely variable, but many are similar to KIT-positive SM. KIT-targeted therapeutic options have been a game-changer in KIT-positive SM, however their role in KIT-negative SM remains controversial. This report aimed to further understand KIT-negative SM by presenting two cases of KIT-negative SM, one of which was responsive to KIT-targeted therapy, and analyzing reported cases in the existing literature.

16.
Nat Struct Mol Biol ; 2024 Jul 01.
Artículo en Inglés | MEDLINE | ID: mdl-38951623

RESUMEN

The development of precise RNA-editing tools is essential for the advancement of RNA therapeutics. CRISPR (clustered regularly interspaced short palindromic repeats) PspCas13b is a programmable RNA nuclease predicted to offer superior specificity because of its 30-nucleotide spacer sequence. However, its design principles and its on-target, off-target and collateral activities remain poorly characterized. Here, we present single-base tiled screening and computational analyses that identify key design principles for potent and highly selective RNA recognition and cleavage in human cells. We show that the de novo design of spacers containing guanosine bases at precise positions can greatly enhance the catalytic activity of inefficient CRISPR RNAs (crRNAs). These validated design principles (integrated into an online tool, https://cas13target.azurewebsites.net/ ) can predict highly effective crRNAs with ~90% accuracy. Furthermore, the comprehensive spacer-target mutagenesis revealed that PspCas13b can tolerate only up to four mismatches and requires ~26-nucleotide base pairing with the target to activate its nuclease domains, highlighting its superior specificity compared to other RNA or DNA interference tools. On the basis of this targeting resolution, we predict an extremely low probability of PspCas13b having off-target effects on other cellular transcripts. Proteomic analysis validated this prediction and showed that, unlike other Cas13 orthologs, PspCas13b exhibits potent on-target activity and lacks collateral effects.

17.
Cureus ; 16(7): e64500, 2024 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-39007016

RESUMEN

Objective This study aimed to investigate the longevity and effectiveness of bioactive glass (BAG)-based dental resin infiltrants. Materials and methods The three types of BAG - 45S5 bioglass (RIS), boron-substituted (RIB), and fluoride-substituted (RIF) - were incorporated with photoinitiated dimethacrylate monomers to create experimental resin infiltrants. ICON® (CN; DMG-America, Ridgefield Park, NJ) and pure resin (PR) were used as control groups in this study. Disc-shaped samples were prepared for the experimental and control groups. The samples were challenged with the pH cycle and immersed in the artificial saliva for 30 days. On Day 0 and Day 30, the pH cycle and artificial saliva immersion, Vicker's microhardness, surface roughness, and surface morphology were investigated. Results The RIF group's disc samples showed the highest Vicker's microhardness values (78.20 ±0.06) on Day 30 of artificial saliva immersion, whereas the CN group's values were the lowest (55.99 ±0.24). Following the pH cycling, the RIF displayed the highest hardness (64.15 ±1.89) whereas the CN group's values were the lowest (33.47 ±1.28). Regarding surface roughness, on Day 30, the RIB resin group exhibited the highest (1.14 ±0.001 µm). In contrast, the CN resin showed the lowest (1.07 ±0.06 µm) values, while immersed in the artificial saliva solution. In the same duration of time, in the pH cycling solution, PR showed the least (0.85 ±0.89 µm), while RIF showed the highest roughness value (0.94 ±0.54 µm). Morphological analysis revealed that following the artificial saliva immersion, the RIB, CN, and PR exhibited smoother surfaces compared to the RIS and RIF groups. However, when immersed in the pH cycling solution, RIB and RIF showed more resistance against acid attack. Conclusions Our results revealed that the experimental resin groups performed much better than the commercial resin infiltrants following artificial saliva and pH cycling challenges.

18.
Neuroradiology ; 66(9): 1625-1633, 2024 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-38869517

RESUMEN

PURPOSE: Spontaneous direct carotid-cavernous fistula (CCF) are usually caused by a ruptured carotid cavernous aneurysm. We studied treatment of spontaneous direct CCFs in a single-center cohort of a high-volume tertiary referral center, reporting anatomical details, technical approaches of treatment, and outcomes. METHODS: Adult patients with a spontaneous direct CCF treated between 2010-2022 with follow-up MRI and/or DSA imaging available were retrospectively analyzed. We studied age, sex, clinical presentation, angiographic findings, treatment techniques, outcomes, and complications. RESULTS: Out of 80 patients with CCFs, twelve patients were treated for a non-traumatic direct CCF (15%) in 13 sessions. Median age was 65 years. Two patients had an underlying connective tissue disorder. In 10 cases, the direct CCF was caused by a ruptured cavernous carotid aneurysm. The direct CCFs were treated by endovascular transarterial embolization (10 cases), transvenous embolization (1 case), or surgery (1 case). Selective closure of the shunt was possible in 10 patients. Two patients were treated with parent vessel occlusion (PVO; one endovascular; one surgical, with bypass). Complications occurred in 2 / 12 patients (17%), with permanent morbidity in two patients (17%): trigeminal neuralgia after PVO and new infarct after surgical PVO and bypass. Selective closure of CCF resulted in no morbidity. There was no mortality in our series. CONCLUSION: Spontaneous direct CCFs are caused by rupture of a cavernous carotid aneurysm in most cases. Selective closure of the shunt, usually feasible transarterially with coils, achieves good results. Reconstructive endovascular techniques are preferred to minimize treatment related neurological complications.


Asunto(s)
Fístula del Seno Cavernoso de la Carótida , Embolización Terapéutica , Humanos , Fístula del Seno Cavernoso de la Carótida/terapia , Fístula del Seno Cavernoso de la Carótida/diagnóstico por imagen , Femenino , Masculino , Anciano , Embolización Terapéutica/métodos , Estudios Retrospectivos , Persona de Mediana Edad , Adulto , Angiografía de Substracción Digital , Resultado del Tratamiento , Anciano de 80 o más Años , Angiografía Cerebral , Imagen por Resonancia Magnética
19.
BMC Musculoskelet Disord ; 25(1): 489, 2024 Jun 22.
Artículo en Inglés | MEDLINE | ID: mdl-38909184

RESUMEN

BACKGROUND: The disability and significant economic costs accredited to Low back pain (LBP) are likely to rise which is an essential problem in low and middle-income countries like Pakistan. The associated factors of LBP are age, sex, and race including physical activity, high spinal load, lifting, bending, and twisting occupations. The literature highlighted there is substantial differences in associated factors of LBP within available studies in developing countries. The objective is to investigate the association of demographic factors and lumbar range of motion with disability in patients with chronic low back. METHODS: A baseline data analysis was performed as an analytical cross-sectional study among 150 patients with chronic low back in a randomized controlled trial with a duration from March 2020 and January 2021. After recording demographics, Modified-Modified Schober's test was used to measure lumbar flexion and extension and Oswestry disability index for disability. After the descriptive analysis the continuous variables, age and pain were analyzed with Spearman's correlation. Variables that were significant in bivariate analysis were then fitted in a multivariable linear regression. The Kruskal-Wallis test was used to analyze variations of disability in gender, marital status, work status, education level, and duration of pain. The p-value of 0.05 was significant. RESULTS: The results showed a significant correlation between age and pain in sitting (rh=-0.189, p = 0.021 and rh = 0.788, p < 0.001) with the disability but no significant effects of age and pain in sitting (B=-0.124, p = 0.212 and B = 1.128, p = 0.082) on disability were found. The decrease in lumbar flexion and extension was found to increase disability (B=-6.018 and - 4.032 respectively with p < 0.001). Female gender (x2(1) = 15.477, p = < 0.001) and unmarried marital status (x2(1) = 4.539, p = 0.033) had more disability than male gender and married marital status, respectively. There was a significance between groups of the duration of pain regarding disability (x2 (2) = 70.905, p < 0.001). Age, education level, and work status showed no significance (p > 0.05). CONCLUSIONS: The female gender and unmarried marital status are associated with functional disability. Decreased lumbar range of motion accompanies more disability, while age, education level, and work status do not effect on disability.


Asunto(s)
Dolor Crónico , Evaluación de la Discapacidad , Dolor de la Región Lumbar , Vértebras Lumbares , Rango del Movimiento Articular , Humanos , Masculino , Femenino , Dolor de la Región Lumbar/fisiopatología , Dolor de la Región Lumbar/diagnóstico , Pakistán/epidemiología , Adulto , Estudios Transversales , Rango del Movimiento Articular/fisiología , Persona de Mediana Edad , Vértebras Lumbares/fisiopatología , Dolor Crónico/fisiopatología , Dolor Crónico/diagnóstico , Dolor Crónico/epidemiología , Factores de Edad , Dimensión del Dolor , Factores Sexuales , Región Lumbosacra/fisiopatología
20.
Gen Psychiatr ; 37(3): e101438, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38881616

RESUMEN

Background: Globally, populations afflicted by armed conflict are known to have high rates of mental health disorders. Aims: This meta-analysis aims to estimate the prevalence of post-traumatic stress disorder (PTSD) and depressive symptoms among civilians residing in armed conflict-affected regions. Methods: This meta-analysis was conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses. A literature search employing MEDLINE(R), Embase Classic+Embase, APA PsycINFO, Ovid Healthstar, Journal@Ovid Full Text, Cochrane, PTSDpubs and CINAHL was conducted from inception until 19 March 2024 to identify relevant studies. Quality assessment was performed using the Joanna Briggs Institute Critical Appraisal Checklist for Prevalence Studies, and a Comprehensive Meta-Analysis was used to conduct the statistical analysis. Results: The search yielded 38 595 articles, of which 57 were considered eligible for inclusion. The included studies comprised data from 64 596 participants. We estimated a prevalence of 23.70% (95% CI 19.50% to 28.40%) for PTSD symptoms and 25.60% (95% CI 20.70% to 31.10%) for depressive features among war-afflicted civilians. The subgroup analysis based on time since the war and the country's economic status revealed the highest prevalence for both PTSD and depressive symptoms was present during the years of war and in low/middle-income countries. Conclusions: The results of this study provide conclusive evidence of the detrimental impacts of armed conflict on mental health outcomes. Hence, it is crucial to emphasise the significance of both physical and mental health in the aftermath of war and take appropriate humanistic measures to overcome challenges in the management of psychiatric illnesses. PROSPERO registration number: CRD42023416096.

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