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1.
Acta Neurochir (Wien) ; 165(5): 1389-1400, 2023 05.
Artigo em Inglês | MEDLINE | ID: mdl-36977865

RESUMO

BACKGROUND: There are few studies on the time to return to activities of daily living (ADL) after craniotomy in patients with brain tumors. This study aimed to investigate the duration before returning to ADLs after craniotomy for brain tumors and present data that can provide information and guidelines on the appropriate time needed. METHODS: Patients (n = 183 of 234) who underwent craniotomy for brain tumors between April 2021 and July 2021 capable of self-care upon discharge were enrolled, and data of 158 were collected. The start time of 85 ADL items was prospectively investigated for 4 months postoperatively, using the self-recording sheet. RESULTS: Over 89% and 87% of the patients performed basic ADL items within a month and instrumental ADL items within 2 months (medians: within 18 days), except for a few. Regarding work, 50% of the patients returned within 4 months. Washing hair with a wound was performed at 18 days of median value, after 4 months of dyeing/perming hair, 6 days of drinking coffee/tea, after 4 months of air travel, and 40 days of complementary and alternative medicine. In patients with infratentorial tumors or surgical problems, return times were much later for various items. CONCLUSIONS: It is possible to provide practical information and guidelines on the duration to return to ADL after craniotomy in brain tumor patients. These study findings also reduce uncertainty about recovery and daily life and help patients return to their daily life at the appropriate time, thereby maintaining function and daily well-being after surgery.


Assuntos
Atividades Cotidianas , Neoplasias Encefálicas , Humanos , Estudos Prospectivos , Fatores de Tempo , Neoplasias Encefálicas/cirurgia , Craniotomia
2.
Heart Surg Forum ; 26(6): E676-E679, 2023 Nov 06.
Artigo em Inglês | MEDLINE | ID: mdl-38178356

RESUMO

Cases that are inoperable owing to poor preoperative conditions are sometimes encountered. However, there are some cases that are led to radical treatment by performing bridge therapy. Here, we presented a case of a patient with complex cardiac disease in an inoperable state who underwent bridging therapy that led to successful surgical treatment. A 73-year-old male who received hemodialysis treatment and had severe aortic valve stenosis and coronary artery disease planned surgical treatment. However, he was deemed inoperable owing to his low cardiac function and hemodynamic instability. Therefore, to escape from a fatal condition, we first performed balloon aortic valvuloplasty and percutaneous coronary intervention as palliative procedures. Subsequently, his cardiac function and hemodynamic stability remarkably improved; therefore, after 1 month, we performed a successful radical surgical treatment. Even in inoperable patients, bridging therapy leading to radical treatment is possible.


Assuntos
Estenose da Valva Aórtica , Procedimentos Cirúrgicos Cardíacos , Masculino , Humanos , Idoso , Função Ventricular Esquerda , Estenose da Valva Aórtica/complicações , Estenose da Valva Aórtica/diagnóstico , Estenose da Valva Aórtica/cirurgia , Valva Aórtica/cirurgia , Terapia Ponte , Resultado do Tratamento
3.
Stereotact Funct Neurosurg ; 100(1): 26-34, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-34569537

RESUMO

INTRODUCTION: Patients with hemifacial spasm (HFS) experience improvement in symptoms after microvascular decompression (MVD); however, patient satisfaction is sometimes low. This study aimed to analyze the relationship between residual spasms and patient satisfaction, identify factors affecting satisfaction, and investigate the degree of improvement in spasms which result in patient satisfaction after surgery. METHODS: 297 patients who completed a questionnaire after MVD for HFS between March 2020 and June 2020 were included. Information on surgical outcomes and patient satisfaction was collected using the questionnaire, and their relationships were analyzed. RESULTS: Among the 297 patients, the mean residual spasm percentage and patient satisfaction score were negatively correlated with 14.0% and 8.8 points, respectively. In addition to residual spasms, discomfort caused by persistent spasms, psychological problem-solving, better social life, and interpersonal relationship improvement were associated with satisfaction. There was no significant association between the presence of complications and satisfaction. There was no significant difference in the satisfaction score at up to 30% residual spasm, and the patients with 0-30% residual spasm had a satisfaction score of 7 points or higher. CONCLUSION: Residual spasms and discomfort from residual spasms decreased patient satisfaction after MVD for HFS. It is then necessary to perform accurate surgical resolution to improve surgical outcomes and provide adequate management to reduce postoperative discomfort and anxiety, and ultimately to enhance satisfaction. Residual spasms of up to 30% compared with the preoperative severity can be considered a good outcome when evaluating surgical outcomes.


Assuntos
Espasmo Hemifacial , Cirurgia de Descompressão Microvascular , Espasmo Hemifacial/etiologia , Espasmo Hemifacial/cirurgia , Humanos , Satisfação do Paciente , Período Pós-Operatório , Estudos Retrospectivos , Resultado do Tratamento
4.
Curr Issues Mol Biol ; 43(3): 1489-1501, 2021 Oct 09.
Artigo em Inglês | MEDLINE | ID: mdl-34698113

RESUMO

It is of utmost importance to develop a computational method for accurate prediction of antioxidants, as they play a vital role in the prevention of several diseases caused by oxidative stress. In this correspondence, we present an effective computational methodology based on the notion of deep latent space encoding. A deep neural network classifier fused with an auto-encoder learns class labels in a pruned latent space. This strategy has eliminated the need to separately develop classifier and the feature selection model, allowing the standalone model to effectively harness discriminating feature space and perform improved predictions. A thorough analytical study has been presented alongwith the PCA/tSNE visualization and PCA-GCNR scores to show the discriminating power of the proposed method. The proposed method showed a high MCC value of 0.43 and a balanced accuracy of 76.2%, which is superior to the existing models. The model has been evaluated on an independent dataset during which it outperformed the contemporary methods by correctly identifying the novel proteins with an accuracy of 95%.


Assuntos
Antioxidantes , Biologia Computacional/métodos , Redes Neurais de Computação , Proteínas , Software , Algoritmos , Bases de Dados de Proteínas , Humanos , Fluxo de Trabalho
5.
Eur Neurol ; 84(4): 288-294, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34044397

RESUMO

INTRODUCTION: Data regarding the association between thyroid dysfunction and hemifacial spasm (HFS) are limited. We conducted a single-center, retrospective study to investigate the predictive value of thyroid dysfunction in patients with HFS after microvascular decompression (MVD). METHODS: Between July 2004 and January 2015, 156 patients who were tested for thyroid hormones after MVD for HFS were enrolled in the present study. We assessed their detailed history, clinical manifestations, serum thyroid hormone levels, and surgical outcomes. The patients were classified into low and high groups based on thyroid hormone concentrations, and clinical outcomes were evaluated in each group. RESULTS: In a total of 156 patients with a median follow-up period of 40.9 months, the improvement rate was 87.8%. The patients were classified into low (76, 48.7%) or high (80, 51.3%) groups based on serum thyroxine (T4) levels. There was a difference between the 2 groups in terms of postoperative outcomes following MVD (p = 0.020). There were no differences in the outcomes according to serum tri-iodothyronine (T3) levels as well as other factors associated with the outcomes. CONCLUSIONS: We found that decreased serum T4 levels are associated with poor postoperative outcomes among patients with HFS. Further studies are needed to examine the clinical benefit of thyroid hormone replacement therapy for patients with suboptimal T4 concentrations as well as active thyroid hormone screening for patients with HFS.


Assuntos
Espasmo Hemifacial , Cirurgia de Descompressão Microvascular , Espasmo Hemifacial/cirurgia , Humanos , Estudos Retrospectivos , Glândula Tireoide/cirurgia , Resultado do Tratamento
6.
Sensors (Basel) ; 20(22)2020 Nov 12.
Artigo em Inglês | MEDLINE | ID: mdl-33198191

RESUMO

Personalized health monitoring of neural signals usually results in a very large dataset, the processing and transmission of which require considerable energy, storage, and processing time. We present bioinspired electroceptive compressive sensing (BeCoS) as an approach for minimizing these penalties. It is a lightweight and reliable approach for the compression and transmission of neural signals inspired by active electroceptive sensing used by weakly electric fish. It uses a signature signal and a sensed pseudo-sparse differential signal to transmit and reconstruct the signals remotely. We have used EEG datasets to compare BeCoS with the block sparse Bayesian learning-bound optimization (BSBL-BO) technique-A popular compressive sensing technique used for low-energy wireless telemonitoring of EEG signals. We achieved average coherence, latency, compression ratio, and estimated per-epoch power values that were 35.38%, 62.85%, 53.26%, and 13 mW better than BSBL-BO, respectively, while structural similarity was only 6.295% worse. However, the original and reconstructed signals remain visually similar. BeCoS senses the signals as a derivative of a predefined signature signal resulting in a pseudo-sparse signal that significantly improves the efficiency of the monitoring process. The results show that BeCoS is a promising approach for the health monitoring of neural signals.


Assuntos
Compressão de Dados , Processamento de Sinais Assistido por Computador , Telemetria , Algoritmos , Teorema de Bayes
7.
Acta Neurochir (Wien) ; 161(10): 2027-2033, 2019 10.
Artigo em Inglês | MEDLINE | ID: mdl-31392569

RESUMO

BACKGROUND: Microvascular decompression (MVD) is a useful treatment for hemifacial spasm (HFS), but the postoperative course is extremely diverse. The purpose of this study was to compare short- and long-term outcomes, find the earliest optimal time for determining the long-term outcomes, and investigate the prognostic factors involved in the outcomes over time. METHODS: From July 2004 to January 2015, 1341 patients who underwent MVD for HFS were enrolled. Information on clinical features, operative findings, and surgical outcomes over time were collected by performing a review of electronic medical records, and their relationships were analyzed. The outcomes of MVD at 1, 3, 6, and 9 months were individually compared against those at > 12 months after surgery. RESULTS: The mean follow-up period after surgery was 44.9 months (median, 36.8 months; range, 12.0-156.6 months). The overall improvement rate for the 1341 patients was 89.0%. Individual postoperative outcomes at 6 and 9 months showed no differences with those at > 12 months after surgery. Furthermore, in the uni- and multi-variable analyses, patients in whom the offending vessels were intraoperatively determined to be veins showed bad outcomes at 6, 9, and > 12 months (p = 0.048, p = 0.004, and p = 0.003, respectively). Patients with intraoperative indentation on the facial nerve showed good outcomes at 6, 9, and > 12 months (p = 0.005, p = 0.039, and p = 0.020, respectively). Patients with delayed facial palsy after surgery showed better outcomes at 6, 9, and > 12 months (p = 0.002, p = 0.003, and p = 0.028, respectively). CONCLUSIONS: Short- and long-term outcomes of MVD in patients with HFS manifested differently, but the outcomes at 6 and 9 months showed similarities with those at > 12 months. In patients in whom the intraoperatively detected offending vessel was not a vein, and in patients with intraoperative indentation on the facial nerve and postoperative delayed facial palsy, good outcomes could be predicted after 6 months of surgery.


Assuntos
Paralisia Facial/epidemiologia , Espasmo Hemifacial/cirurgia , Cirurgia de Descompressão Microvascular/efeitos adversos , Complicações Pós-Operatórias/epidemiologia , Adulto , Idoso , Nervo Facial/cirurgia , Feminino , Espasmo Hemifacial/diagnóstico , Humanos , Masculino , Cirurgia de Descompressão Microvascular/métodos , Pessoa de Meia-Idade
8.
Acta Neurochir (Wien) ; 161(3): 503-508, 2019 03.
Artigo em Inglês | MEDLINE | ID: mdl-30569226

RESUMO

BACKGROUND: This study aimed to analyze cases of delayed hearing loss after microvascular decompression (MVD) for hemifacial spasm and identify the characteristic features of these patients. METHODS: We retrospectively reviewed the medical records of 3462 patients who underwent MVD for hemifacial spasm between January 1998 and August 2017. RESULTS: Among these, there were 5 cases in which hearing was normal immediately postoperatively but delayed hearing loss occurred. None of the 5 patients reported any hearing disturbance immediately after the operation. However, they developed hearing problems suddenly after some time (median, 22 days; range 10-45 days). On examination, sensorineural hearing loss was confirmed. High-dose corticosteroid treatment was prescribed. Preoperative hearing levels were restored after several months (median duration from the time of the operation, 45 days; range 22-118 days). Interestingly, the inter-peak latency of waves I-III in the brainstem auditory evoked potential (BAEP) was prolonged during the surgery, but recovered within a short time. CONCLUSION: Delayed hearing loss may occur after MVD for HFS. Prolongation of the inter-peak latency of waves I-III seems to be associated with the occurrence of delayed hearing loss. It is possible that BAEP changes may predict delayed hearing loss, but confirmatory evidence is not available as yet. Analysis of more cases is necessary to determine the utility of BAEP monitoring to predict delayed hearing loss after MVD and to identify its exact cause.


Assuntos
Perda Auditiva/etiologia , Espasmo Hemifacial/cirurgia , Cirurgia de Descompressão Microvascular/efeitos adversos , Complicações Pós-Operatórias/etiologia , Adulto , Potenciais Evocados Auditivos do Tronco Encefálico , Feminino , Humanos , Masculino , Pessoa de Meia-Idade
9.
Sensors (Basel) ; 19(17)2019 Aug 21.
Artigo em Inglês | MEDLINE | ID: mdl-31438597

RESUMO

Irrigation systems are becoming increasingly important, owing to the increase in human population, global warming, and food demand. This study aims to design a low-cost autonomous sensor interface to automate the monitoring and control of irrigation systems in remote locations, and to optimize water use for irrigation farming. An internet of things-based irrigation monitoring and control system, employing sensors and actuators, is designed to facilitate the autonomous supply of adequate water from a reservoir to domestic crops in a smart irrigation systems. System development lifecycle and waterfall model design methodologies have been employed in the development paradigm. The Proteus 8.5 design suite, Arduino integrated design environment, and embedded C programming language are commonly used to develop and implement a real working prototype. A pumping mechanism has been used to supply the water required by the soil. The prototype provides power supply, sensing, monitoring and control, and internet connectivity capabilities. Experimental and simulation results demonstrate the flexibility and practical applicability of the proposed system, and are of paramount importance, not only to farmers, but also for the expansion of economic activity. Furthermore, this system reduces the high level of supervision required to supply irrigation water, enabling remote monitoring and control.

10.
BMC Infect Dis ; 17(1): 404, 2017 06 07.
Artigo em Inglês | MEDLINE | ID: mdl-28592240

RESUMO

BACKGROUND: Due to limited therapeutic options, the spread of extended-spectrum beta-lactamases (ESBLs) have become a major public health concern. We conducted a prospective, randomized, open-label comparison of the therapeutic efficacy of piperacillin-tazobactam (PTZ), cefepime, and ertapenem in febrile nosocomial urinary tract infection with ESBL-producing Escherichia coli (ESBL-EC). METHODS: This study was conducted at three university hospitals between January 2013 and August 2015. Hospitalized adult patients presenting with fever were screened for healthcare-associated urinary tract infection (HA-UTI). When ESBL-EC was solely detected and susceptible to a randomized antibiotic in vitro, the case was included in the final analysis. Participants were treated for 10-14 days with PTZ, cefepime, or ertapenem. RESULTS: A total of 66 participants were evenly assigned to the PTZ and ertapenem treatment groups. After the recruitment of six participants, assignment to the cefepime treatment group was stopped because of an unexpectedly high treatment failure rate. The baseline characteristics of these participants did not differ from participants in other treatment groups. The clinical and microbiological response to PTZ treatment was estimated to be 94% and was similar to the response to ertapenem treatment. The efficacy of cefepime was 33.3%. In the cefepime group, age, Charlson comorbidity index, genotype, and minimal inhibitory concentration (MIC) did not significantly affect the success of treatment. Similarly, genotype seemed to be irrelevant with respect to clinical outcome in the PTZ group. Expired cases tended to involve septic shock with a high Charlson comorbidity index and high MIC. CONCLUSION: Results from this study suggest that PTZ is effective in the treatment of urinary tract infection caused by ESBL-EC when the in vitro test indicates susceptibility. In addition, cefepime should not be used as an alternative treatment for urinary tract infection caused by ESBL-EC. TRIAL REGISTRATION: The trial was registered with the Clinical Research Information Service of Korea Centers for Disease Control and Prevention. (KCT0001895).


Assuntos
Antibacterianos/uso terapêutico , Infecções por Escherichia coli/tratamento farmacológico , Escherichia coli/efeitos dos fármacos , Ácido Penicilânico/análogos & derivados , Infecções Urinárias/tratamento farmacológico , Inibidores de beta-Lactamases/uso terapêutico , Idoso , Idoso de 80 Anos ou mais , Cefepima , Cefalosporinas/uso terapêutico , Infecção Hospitalar , Ertapenem , Escherichia coli/enzimologia , Escherichia coli/genética , Escherichia coli/isolamento & purificação , Infecções por Escherichia coli/microbiologia , Feminino , Genótipo , Humanos , Masculino , Pessoa de Meia-Idade , Ácido Penicilânico/uso terapêutico , Piperacilina/uso terapêutico , Combinação Piperacilina e Tazobactam , Estudos Prospectivos , República da Coreia , Tazobactam , Infecções Urinárias/microbiologia , beta-Lactamases/genética , beta-Lactamas/uso terapêutico
11.
Stereotact Funct Neurosurg ; 95(1): 21-25, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-28088801

RESUMO

BACKGROUND: The natural history without treatment of a large series of hemifacial spasm (HFS) patients has not been well-documented. OBJECTIVE: The purpose of this study was to characterize the natural history and clinical outcome in patients with HFS. METHODS: The initial visits of all 2,155 patients and the diagnosis of HFS took place between 2001 and 2010. In 1,775 of the patients, compressing vessels were identified on magnetic resonance imaging. Of these, we excluded 1,469 patients (82.8%) who received microvascular decompression, 101 (5.7%) who continued to visit the clinic for botulinum toxin injections, and 9 (0.5%) who died or suffered from other diseases. Ninety-two (5.2%) of the patients were lost to follow-up; the remaining 104 were followed up for 5-42 years (mean 12 years) after the onset of the symptoms of HFS. RESULTS: The condition was aggravated in 11 (10.6%) of the 104 patients and stationary in 40 (38.5%) for 6-42 years (mean 13 years). Ten (9.6%) improved partially for 7-18 years (mean 11 years). Forty-three (41.3%) were in remission for between 2 months and 23 years (mean 6.4 years) after onset and required no further treatment for 5 months to 13 years (mean 5.7 years). CONCLUSION: This study provides useful information to HFS patients for understanding the disease and determining treatment.


Assuntos
Espasmo Hemifacial/diagnóstico por imagem , Cirurgia de Descompressão Microvascular/métodos , Adulto , Idoso , Idoso de 80 Anos ou mais , Toxinas Botulínicas Tipo A/uso terapêutico , Progressão da Doença , Feminino , Seguimentos , Espasmo Hemifacial/cirurgia , Humanos , Imageamento por Ressonância Magnética , Masculino , Pessoa de Meia-Idade , Fármacos Neuromusculares/uso terapêutico , Resultado do Tratamento , Adulto Jovem
12.
J Nanosci Nanotechnol ; 16(6): 6580-6, 2016 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-27427756

RESUMO

Inorganic nanoparticles have been widely applied to various industrial fields and biological applications. However, the question as to whether nanoparticles are more efficiently absorbed into the systemic circulation than bulk-sized materials remains to be unclear. In the present study, the physico-chemical and dissolution properties of the most extensively developed inorganic nanoparticles, such as silica (SiO2), titanium dioxide (TiO2), and zinc oxide (ZnO), were analyzed, as compared with bulk-sized particles. Furthermore, the bioavailability of nanoparticles versus their bulk counterparts was evaluated in rats after a single oral administration and intravenous injection, respectively. The results demonstrated that all bulk materials had slightly higher crystallinity than nanoparticles, however, their dissolution properties were not affected by particle size. No significant difference in oral absorption and bioavailability of both SiO2 and TiO2 was found between nano- and bulk-sized materials, while bulk ZnO particles were more bioavailable in the body than ZnO nanoparticles. These finding will provide critical information to apply nanoparticles with high efficiency as well as to predict their toxicity potential.


Assuntos
Nanopartículas/química , Dióxido de Silício/química , Dióxido de Silício/farmacocinética , Titânio/química , Titânio/farmacocinética , Óxido de Zinco/química , Óxido de Zinco/farmacocinética , Absorção Fisico-Química , Animais , Disponibilidade Biológica , Cinética , Masculino , Tamanho da Partícula , Ratos , Ratos Sprague-Dawley
13.
Appl Microbiol Biotechnol ; 99(22): 9427-38, 2015 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-26239074

RESUMO

The microbiological production of 2,3-butanediol (2,3-BDO) has attracted considerable attention as an alternative way to produce high-value chemicals from renewable sources. Among the number of 2,3-BDO-producing microorganisms, Klebsiella pneumoniae has been studied most extensively and is known to produce large quantity of 2,3-BDO from a range of substrates. On the other hand, the pathogenic characteristics of the bacteria have limited its industrial applications. In this study, two major virulence traits, outer core LPS and fimbriae, were removed through homologous recombination from 2,3-BDO-producing K. pneumoniae 2242 to expand its uses to the industrial scale. The K. pneumoniae 2242 ∆wabG mutant strain was found to have an impaired capsule, which significantly reduced its ability to bind to the mucous layer and evade the phagocytic activity of macrophage. The association with the human ileocecal epithelial cell, HCT-8, and the bladder epithelial cell, T-24, was also reduced dramatically in the K. pneumoniae 2242 ∆fimA mutant strain that was devoid of fimbriae. However, the growth rate and production yield for 2,3-BDO were unaffected. The K. pneumoniae strains developed in this study, which are devoid of the major virulence factors, have a high potential for the efficient and sustainable production of 2,3-BDO.


Assuntos
Butileno Glicóis/metabolismo , Fímbrias Bacterianas/genética , Klebsiella pneumoniae/genética , Lipopolissacarídeos/genética , Fatores de Virulência/genética , Aderência Bacteriana , Cápsulas Bacterianas , Linhagem Celular , Células Epiteliais/microbiologia , Fermentação , Fímbrias Bacterianas/ultraestrutura , Engenharia Genética , Recombinação Homóloga , Humanos , Microbiologia Industrial/métodos , Klebsiella pneumoniae/ultraestrutura , Lipopolissacarídeos/química , Lipopolissacarídeos/metabolismo , Macrófagos/microbiologia , Mutação , Fatores de Virulência/metabolismo
14.
Sensors (Basel) ; 15(8): 20316-54, 2015 Aug 18.
Artigo em Inglês | MEDLINE | ID: mdl-26295236

RESUMO

We propose an autonomous self-aware and adaptive fault-tolerant routing technique (ASAART) for wireless sensor networks. We address the limitations of self-healing routing (SHR) and self-selective routing (SSR) techniques for routing sensor data. We also examine the integration of autonomic self-aware and adaptive fault detection and resiliency techniques for route formation and route repair to provide resilience to errors and failures. We achieved this by using a combined continuous and slotted prioritized transmission back-off delay to obtain local and global network state information, as well as multiple random functions for attaining faster routing convergence and reliable route repair despite transient and permanent node failure rates and efficient adaptation to instantaneous network topology changes. The results of simulations based on a comparison of the ASAART with the SHR and SSR protocols for five different simulated scenarios in the presence of transient and permanent node failure rates exhibit a greater resiliency to errors and failure and better routing performance in terms of the number of successfully delivered network packets, end-to-end delay, delivered MAC layer packets, packet error rate, as well as efficient energy conservation in a highly congested, faulty, and scalable sensor network.

15.
Int J Mol Sci ; 15(12): 22563-79, 2014 Dec 05.
Artigo em Inglês | MEDLINE | ID: mdl-25490138

RESUMO

We have successfully prepared layered double hydroxide (LDH) nanomaterials containing calcium and aluminum ions in the framework (CaAl-LDH). The surface of CaAl-LDH was coated with enteric polymer, Eudragit®L 100 in order to protect nanomaterials from fast dissolution under gastric condition of pH 1.2. The X-ray diffraction patterns, Fourier transform infrared spectroscopy, scanning electron and transmission electron microscopy revealed that the pristine LDH was well prepared having hydrocalumite structure, and that the polymer effectively coated the surface of LDH without disturbing structure. From thermal analysis, it was determined that only a small amount (less than 1%) of polymer was coated on the LDH surface. Metal dissolution from LDH nanomaterials was significantly reduced upon Eudragit®L 100 coating at pH 1.2, 6.8 and 7.4, which simulates gastric, enteric and plasma conditions, respectively, and the dissolution effect was the most suppressed at pH 1.2. The LDH nanomaterials did not exhibit any significant cytotoxicity up to 1000 µg/mL and intracellular calcium concentration significantly increased in LDH-treated human intestinal cells. Pharmacokinetic study demonstrated absorption efficiency of Eudragit®L 100 coated LDH following oral administration to rats. Moreover, the LDH nanomaterials did not cause acute toxic effect in vivo. All the results suggest the great potential of CaAl-LDH nanomaterials as a calcium supplement.


Assuntos
Alumínio/química , Cálcio/química , Suplementos Nutricionais , Portadores de Fármacos/química , Hidróxidos/química , Nanoestruturas/química , Polímeros/química , Animais , Cálcio/administração & dosagem , Cálcio/farmacocinética , Linhagem Celular , Sobrevivência Celular , Humanos , Masculino , Nanoestruturas/ultraestrutura , Ratos , Espectroscopia de Infravermelho com Transformada de Fourier , Testes de Toxicidade Aguda
16.
Heliyon ; 10(15): e34922, 2024 Aug 15.
Artigo em Inglês | MEDLINE | ID: mdl-39145028

RESUMO

The concept of security is becoming a global challenge, and governments, stakeholders, corporate societies, and individuals must urgently create a reasonable protection mechanism for good. Therefore, a real-time surveillance system is essential for detection, tracking, and monitoring. Many studies have attempted to provide better solutions but more research and better approaches are essential. This study presents a real-time framework for object detection and tracking for security surveillance systems. The system has been designed based on approximate median filtering, component labeling, background subtraction, and deep learning approaches. The new algorithms for object detection, tracking, and recognition have been implemented using Python and integrated with C# programming languages for ease of use. A software application framework is designed, implemented, and evaluated. The experimental results based on MOT-Challenge performance metrics show that the proposed algorithms have much better performance in terms of accuracy and precision on the MOT15, MOT16, and MOT17 datasets compared to state-of-the-art approaches. This framework also provides an accurate and effective means of monitoring and recognizing moving objects. The software development, including the design of the framework user interfaces, is coded in the C# programming language and integrated with Python using Microsoft Visual Studio (2019 edition). The integration is performed to provide a convenient user interface and to enable the execution of the framework as a standard and standalone software application. Future studies will consider the dynamic scalability of the framework to accommodate different surveillance application areas in overcrowded scenarios. Multiple data sources are integrated to enhance the performance for different scene times, locations, and weather conditions. Furthermore, other object-detection techniques such as You Only Look Once (YOLO) and its variants shall be considered in future studies. These techniques allow the framework to adapt to complex situations in which security surveillance is challenging.

17.
J Microbiol Immunol Infect ; 57(5): 760-770, 2024 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-39079772

RESUMO

BACKGROUND: The ongoing, observational BICSTaR (BICtegravir Single Tablet Regimen) cohort study is evaluating real-world effectiveness and safety of bictegravir/emtricitabine/tenofovir alafenamide (B/F/TAF) in people with HIV across 14 countries over 24 months. We present 12-month data from the BICSTaR Asia cohort. METHODS: Data were pooled from retrospective and prospective cohorts of antiretroviral therapy (ART)-naïve (hereafter, TN) and ART-experienced (hereafter, TE) people with HIV (aged ≥21 years) receiving B/F/TAF in routine clinical care in the Republic of Korea, Singapore, and Taiwan. Analyses included effectiveness (primary endpoint: HIV-1 RNA <50 copies/ml, missing = excluded analysis), CD4 count, CD4/CD8 ratio, safety, treatment persistence, and patient-reported outcomes (prospective group). RESULTS: The analysis population included 328 participants (80 retrospective, 248 prospective; 65 TN, 263 TE). Participants were predominantly male (96.9% TN, 93.2% TE) with ≥1 comorbidity (52.3% TN, 57.8% TE); median age (years) was 31 (TN) and 42 (TE). Following 12 months of B/F/TAF, HIV-1 RNA was <50 copies/ml in 98.2% (54/55) of TN and 97.0% (227/234) of TE participants. Median (Q1, Q3) CD4 cell count increased by +187 (119, 291) cells/µl in the TN group (p < 0.001) and remained stable (+8 [-91, 110] cells/µl) in the TE group. B/F/TAF persistence was high in the prospective group, with 1/34 (2.9%) TN and 5/214 (2.3%) TE participants discontinuing treatment within 12 months. Drug-related adverse events occurred in 5.8% (19/328) of participants, leading to treatment discontinuation in 0.6% (2/328). CONCLUSIONS: Real-world evidence from BICSTaR supports the effectiveness, safety and tolerability of B/F/TAF in people with HIV in Asia.


Assuntos
Fármacos Anti-HIV , Emtricitabina , Infecções por HIV , HIV-1 , Piridonas , Tenofovir , Humanos , Infecções por HIV/tratamento farmacológico , Infecções por HIV/virologia , Masculino , Feminino , Adulto , Tenofovir/uso terapêutico , Tenofovir/análogos & derivados , Emtricitabina/uso terapêutico , Fármacos Anti-HIV/uso terapêutico , Fármacos Anti-HIV/efeitos adversos , Estudos Retrospectivos , Pessoa de Meia-Idade , Estudos Prospectivos , Piridonas/uso terapêutico , Resultado do Tratamento , Contagem de Linfócito CD4 , HIV-1/efeitos dos fármacos , HIV-1/genética , Compostos Heterocíclicos de 4 ou mais Anéis/uso terapêutico , Compostos Heterocíclicos de 4 ou mais Anéis/efeitos adversos , Piperazinas/uso terapêutico , Adenina/análogos & derivados , Adenina/uso terapêutico , Adenina/efeitos adversos , Alanina/uso terapêutico , Alanina/análogos & derivados , Combinação de Medicamentos , Carga Viral/efeitos dos fármacos , Compostos Heterocíclicos com 3 Anéis/uso terapêutico , Compostos Heterocíclicos com 3 Anéis/efeitos adversos , Singapura/epidemiologia , Amidas/uso terapêutico , Taiwan , Estudos de Coortes , RNA Viral/sangue
18.
Adv Sci (Weinh) ; 11(17): e2310094, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38408139

RESUMO

Electrolyte additives with multiple functions enable the interfacial engineering of Li-metal batteries (LMBs). Owing to their unique reduction behavior, additives exhibit a high potential for electrode surface modification that increases the reversibility of Li-metal anodes by enabling the development of a hierarchical solid electrolyte interphase (SEI). This study confirms that an adequately designed SEI facilitates the homogeneous supply of Li+, nonlocalized Li deposition, and low electrolyte degradation in LMBs while enduring the volume fluctuation of Li-metal anodes on cycling. An in-depth analysis of interfacial engineering mechanisms reveals that multilayered SEI structures comprising mechanically robust LiF-rich species, electron-rich P-O species, and elastic polymeric species enabled the stable charge and discharge of LMBs. The polymeric outer SEI layer in the as-fabricated multilayered SEI could accommodate the volume fluctuation of Li-metal anodes, significantly enhancing the cycling stability Li||LiNi0.8Co0.1Mn0.1O2 full cells with an electrolyte amount of 3.6 g Ah-1 and an areal capacity of 3.2 mAh cm-2. Therefore, this study confirms the ability of interfacial layers formed by electrolyte additives and fluorinated solvents to advance the performance of LMBs and can open new frontiers in the fabrication of high-performance LMBs through electrolyte-formulation engineering.

19.
Chem Sci ; 14(37): 9996-10024, 2023 Sep 27.
Artigo em Inglês | MEDLINE | ID: mdl-37772127

RESUMO

Next-generation battery development necessitates the coevolution of liquid electrolyte and electrode chemistries, as their erroneous combinations lead to battery failure. In this regard, priority should be given to the alleviation of the volumetric stress experienced by silicon and lithium-metal anodes during cycling and the mitigation of other problems hindering their commercialization. This review summarizes the advances in sacrificial compound-based volumetric stress-adaptable interfacial engineering, which has primarily driven the development of liquid electrolytes for high-performance lithium batteries. Besides, we discuss how the regulation of lithium-ion solvation structures helps expand the range of electrolyte formulations and thus enhance the quality of solid electrolyte interphases (SEIs), improve lithium-ion desolvation kinetics, and realize longer-lasting SEIs on high-capacity anodes. The presented insights are expected to inspire the design and synthesis of next-generation electrolyte materials and accelerate the development of advanced electrode materials for industrial battery applications.

20.
Chem Sci ; 14(38): 10610, 2023 Oct 04.
Artigo em Inglês | MEDLINE | ID: mdl-37799996

RESUMO

[This corrects the article DOI: 10.1039/D3SC03514J.].

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