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1.
BMC Musculoskelet Disord ; 25(1): 66, 2024 Jan 15.
Artículo en Inglés | MEDLINE | ID: mdl-38225636

RESUMEN

BACKGROUND: The objective of the study is to analyse the regions, age and sex differences in the incidence of knee osteoarthritis (KOA). METHODS: Data were extracted from the global burden of diseases (GBD) 2019 study, including incidence, years lived with disability (YLD), disability-adjusted life-years (DALYs) and risk factors. Estimated annual percentage changes (EAPCs) were calculated to quantify the temporal trends in age standardized rate (ASR) of KOA. Paired t-test, paired Wilcoxon signed-rank test and spearman correlation were performed to analyze the association of sex disparity in KOA and socio-demographic index (SDI). RESULTS: There were significant regional differences in the incidence of knee osteoarthritis. In 2019, South Korea had the highest incidence of knee osteoarthritis (474.85,95%UI:413.34-539.64) and Thailand had the highest increase in incidence of knee osteoarthritis (EAPC = 0.56, 95%CI = 0.54-0.58). Notably, higher incidence, YLD and DALYs of knee osteoarthritis were associated with areas with a high socio-demographic index (r = 0.336, p < 0.001; r = 0.324, p < 0.001; r = 0.324, p < 0.001). In terms of age differences, the greatest increase in the incidence of knee osteoarthritis was between the 35-39 and 40-44 age groups. (EAPC = 0.52, 95%CI = 0.40-0.63; 0.47, 95%CI = 0.36-0.58). In addition, there were significant sex differences in the disease burden of knee osteoarthritis (P < 0.001). CONCLUSIONS: The incidence of knee osteoarthritis is significantly different with regions, age and sex.


Asunto(s)
Osteoartritis de la Rodilla , Humanos , Femenino , Masculino , Osteoartritis de la Rodilla/diagnóstico , Osteoartritis de la Rodilla/epidemiología , Caracteres Sexuales , Costo de Enfermedad , Carga Global de Enfermedades , República de Corea/epidemiología , Años de Vida Ajustados por Calidad de Vida , Incidencia , Salud Global
2.
Ecotoxicol Environ Saf ; 275: 116275, 2024 Apr 15.
Artículo en Inglés | MEDLINE | ID: mdl-38564858

RESUMEN

Compound pollution with cadmium (Cd) and zinc (Zn) is common in nature. The effects of compounded Cd and Zn on the growth and development of Iris pseudacorus in the environment and the plant's potential to remediate heavy metals in the environment remain unclear. In this study, the effects of single and combined Cd and Zn stress on I. pseudacorus growth and the enrichment of heavy metals in I. pseudacorus seedlings were investigated. The results showed that under Cd (160 µM) and Zn (800 µM) stress, plant growth was significantly inhibited and photosynthetic performance was affected. Cd+Zn200 (160 µM + 200 µM) reduced the levels of malondialdehyde, hydrogen peroxide, and non-protein thiols by 31.29%, 53.20%, and 13.29%, respectively, in the aboveground tissues compared with levels in the single Cd treatment. However, Cd+Zn800 (160 µM + 800 µM) had no effect. Cd and Zn800 inhibited the absorption of mineral elements, while Zn200 had little effect on plants. Compared with that for Cd treatment alone, Cd + Zn200 and Cd+Zn800 reduced the Cd content in aboveground tissues by 54.15% and 49.92%, respectively, but had no significant effect on Cd in the root system. Zn significantly reduced the Cd content in subcellular components and limited the content and proportion of Cd extracted using water and ethanol. These results suggest that a low supply of Zn reduces Cd accumulation in aboveground tissues by promoting antioxidant substances and heavy metal chelating agents, thus protecting the photosynthetic systems. The addition of Zn also reduced the mobility and bioavailability of Cd to alleviate its toxicity in I. pseudacorus.


Asunto(s)
Género Iris , Metales Pesados , Contaminantes del Suelo , Cadmio/toxicidad , Cadmio/análisis , Zinc/toxicidad , Desarrollo de la Planta , Contaminantes del Suelo/toxicidad
3.
Angew Chem Int Ed Engl ; : e202416319, 2024 Sep 16.
Artículo en Inglés | MEDLINE | ID: mdl-39284773

RESUMEN

Despite extensive studies has been explored on single-molecule switches and rectifiers, the design of single-molecule inductors has not been explored due to the experimental challenges in the investigation of frequency-dependent charge transport at the single-molecule scale. In this study, we synthesized a helicene-based helical molecular wire and carried out meticulous single-molecule conductance measurements, combined with current-voltage (IV) studies with varying frequencies using the scanning tunneling microscope break junction (STM-BJ) technique. Our results reveal the formation of a single-molecule junction and highlight the unique behavior of the molecular wire in response to different alternating current (AC) varying frequencies. The transport of charges occurs selectively either through the coiled backbone of the conjugated helical structure or vertically via π-π stacking, depending on the frequency of the applied AC. Notably, our investigation demonstrates the functionality of the wire as an inductor at low frequencies, and a capacitor at high frequencies. This work lays the foundation for a systematic approach to designing, fabricating, and implementing single-molecule logic devices such as inductors and wave filters.

4.
Nephrology (Carlton) ; 28(3): 159-167, 2023 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-36564906

RESUMEN

AIM: To investigate the gender and socioeconomic disparities in the global burden of chronic kidney disease (CKD) due to glomerulonephritis from 1990 to 2019. METHODS: Data were extracted from the global burden of diseases (GBD) 2019 study, including incidence, prevalence and disability-adjusted life-years (DALYs). Estimated annual percentage changes (EAPCs) were calculated to quantify the temporal trends in age-standardized rate (ASR) of CKD due to glomerulonephritis. Paired t-test, paired Wilcoxon signed-rank test and Spearman correlation were performed to analyse the association and gender disparity in CKD due to glomerulonephritis. RESULTS: Globally, incident cases of CKD due to glomerulonephritis increased 81% from 9 557 397 in 1990 to 17 308 071 in 2019. The age-standardized incidence rate increased by 1.47 compared with 1990 and DALYs increased by 1.35 compared with 1990 (per 100 000). The number of patients with CKD due to glomerulonephritis in low-middle SDI (3829917) and middle SDI (6268817) regions accounts for more than 55% of the total cases. CKD due to glomerulonephritis caused a higher burden including the incidence rate (p < .0001) and DALY rate (p < .0001) in men compared to women. The age-standardized DALY rate was negatively correlated with SDI (ρ = -0.64, p < .001). In the analysis of risk factors for DALYs, male individuals had a larger burden of hypertension, high BMI and high sodium diet in the DALY rates than female subjects. CONCLUSION: The burden of CKD due to glomerulonephritis was more skewed towards developing and less developed economies and differed by gender, so certain nations should implement far more focused and targeted policies.


Asunto(s)
Insuficiencia Renal Crónica , Disparidades Socioeconómicas en Salud , Humanos , Masculino , Femenino , Años de Vida Ajustados por Calidad de Vida , Salud Global , Carga Global de Enfermedades , Incidencia
5.
Aesthetic Plast Surg ; 46(1): 297-307, 2022 02.
Artículo en Inglés | MEDLINE | ID: mdl-33782726

RESUMEN

After more than a century of development, autologous fat transplantation (AFT), a repair method for soft tissue defects and deformities, has the advantages of being simple, rapid, effective and safe, and it is increasingly favoured by plastic surgeons. This article reviews the developmental history of AFT, analyses its clinical application status in the oral and maxillofacial regions, and provides a preliminary summary and discussion of the research progress related to AFT. The hope is that that this technique could be widely applied for oral and maxillofacial diseases as well as facial rejuvenation indications. LEVEL OF EVIDENCE III: This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .


Asunto(s)
Tejido Adiposo , Rejuvenecimiento , Tejido Adiposo/trasplante , Cara , Humanos , Trasplante Autólogo/métodos , Resultado del Tratamiento
6.
Sensors (Basel) ; 21(5)2021 Mar 04.
Artículo en Inglés | MEDLINE | ID: mdl-33806584

RESUMEN

Ion-sensitive field-effect transistors (ISFETs) form a high sensitivity and scalable class of sensors, compatible with advanced complementary metal-oxide semiconductor (CMOS) processes. Despite many previous demonstrations about their merits as low-power integrated sensors, very little is known about their noise characterization when being operated in a liquid gate configuration. The noise characteristics in various regimes of their operation are important to select the most suitable conditions for signal-to-noise ratio (SNR) and power consumption. This work reports systematic DC, transient, and noise characterizations and models of a back-end of line (BEOL)-modified foundry-made ISFET used as pH sensor. The aim is to determine the sensor sensitivity and resolution to pH changes and to calibrate numerical and lumped element models, capable of supporting the interpretation of the experimental findings. The experimental sensitivity is approximately 40 mV/pH with a normalized resolution of 5 mpH per µm2, in agreement with the literature state of the art. Differences in the drain current noise spectra between the ISFET and MOSFET configurations of the same device at low currents (weak inversion) suggest that the chemical noise produced by the random binding/unbinding of the H+ ions on the sensor surface is likely the dominant noise contribution in this regime. In contrast, at high currents (strong inversion), the two configurations provide similar drain noise levels suggesting that the noise originates in the underlying FET rather than in the sensing region.


Asunto(s)
Técnicas Biosensibles , Dispositivos Electrónicos Vestibles , Diseño de Equipo , Concentración de Iones de Hidrógeno , Sistemas de Atención de Punto , Transistores Electrónicos
7.
Chemistry ; 25(52): 12137-12144, 2019 Sep 18.
Artículo en Inglés | MEDLINE | ID: mdl-31276238

RESUMEN

Isomerism heavily influences the optoelectronic properties and self-assembly behavior of compounds and subsequently affects their device performance. Herein, two pairs of isomeric perylene diimide (PDI) dimers, PDI and PDI2, were designed and synthesized. The electron-deficient 9,10-anthraquinone group was employed as the bridge, and thus, the resultant dimers exhibited an acceptor-acceptor-acceptor (A-A-A) structure. To determine the isomeric effects on the optoelectronic properties and photovoltaic performance of these dimers, their absorptivity, luminescence, and redox behavior were studied. Bulk heterojunction organic solar cells based on these four dimers were fabricated and measured. The two PDI dimers exhibited clear differences in photovoltaic performance, whereas the two PDI2 analogues showed similar power conversion efficiencies (PCEs). The PCEs of the two PDI2 dimers are much higher than those of the PDI dimers. These results illustrate that the isomeric effect of PDI dimers is much larger than that of PDI2 dimers on the device performance, and proper expansion of conjugation could improve the device performance.


Asunto(s)
Antraquinonas/química , Imidas/química , Perileno/análogos & derivados , Dimerización , Electrónica , Isomerismo , Oxidación-Reducción , Perileno/química , Energía Solar
8.
Nature ; 463(7278): 250-4, 2010 Jan 14.
Artículo en Inglés | MEDLINE | ID: mdl-20075921

RESUMEN

Phytochromes are a collection of bilin-containing photoreceptors that regulate numerous photoresponses in plants and microorganisms through their ability to photointerconvert between a red-light-absorbing, ground state (Pr) and a far-red-light-absorbing, photoactivated state (Pfr). Although the structures of several phytochromes as Pr have been determined, little is known about the structure of Pfr and how it initiates signalling. Here we describe the three-dimensional solution structure of the bilin-binding domain as Pfr, using the cyanobacterial phytochrome from Synechococcus OSB'. Contrary to predictions, light-induced rotation of the A pyrrole ring but not the D ring is the primary motion of the chromophore during photoconversion. Subsequent rearrangements within the protein then affect intradomain and interdomain contact sites within the phytochrome dimer. On the basis of our models, we propose that phytochromes act by propagating reversible light-driven conformational changes in the bilin to altered contacts between the adjacent output domains, which in most phytochromes direct differential phosphotransfer.


Asunto(s)
Proteínas Bacterianas/química , Proteínas Bacterianas/efectos de la radiación , Luz , Fitocromo/química , Fitocromo/efectos de la radiación , Proteínas Quinasas/química , Proteínas Quinasas/efectos de la radiación , Synechococcus/química , Aminoácidos/química , Aminoácidos/metabolismo , Aminoácidos/efectos de la radiación , Proteínas Bacterianas/genética , Proteínas Bacterianas/metabolismo , Pigmentos Biliares/química , Pigmentos Biliares/metabolismo , Pigmentos Biliares/efectos de la radiación , Sitios de Unión , Espectroscopía de Resonancia Magnética , Modelos Moleculares , Fotorreceptores Microbianos , Fitocromo/genética , Fitocromo/metabolismo , Proteínas Quinasas/genética , Proteínas Quinasas/metabolismo , Estructura Terciaria de Proteína/efectos de la radiación , Rotación , Synechococcus/genética
10.
Artículo en Zh | MEDLINE | ID: mdl-26245123

RESUMEN

OBJECTIVE: To assess the diagnostic performance of hydatid cyst fluid (HCF) in detecting the anti-HCF IgG and its subclasses IgG1, IgG2 and IgG4 in serum of cystic echinococcosis patients. METHODS: ELISA was used to measure IgG and its subclasses IgG1, IgG2, and IgG4 specific for Echinococcus granulosus HCF, in the sera of 37 cystic echinococcosis (CE) patients and 29 healthy subjects in Huan County, Gansu Province. The receiver operating characteristic (ROC) curves of the four antibodies were analyzed by MedCalc software, referenced with the gold-standard B ultrasonic imaging. The diagnostic performances between the four antibodies were compared using paired z statistics based on the areas under the curve (AUC), and the best diagnostic threshold was determined for each. The sensitivity and specificity for detecting the four types of antibodies were compared using Chi-square test. RESULTS: The AUCs for IgG and its subclasses IgG1, IgG2, and IgG4 were 0.722, 0.919, 0.712, and 0.835, respectively; the AUC of IgG1 was significantly higher than those of IgG (z = 3.629, P < 0.05) and IgG2 (z = 3.292, P<0.05). The sensitivity for detecting IgG, IgGl, IgG2, and IgG4 was 54.1%, 91.9%, 67.6%, and 75.7%, respectively; the sensitivity for IgGl was significantly higher than that for IgG (χ2 = 3.84, P < 0.05), IgG2 (χ2 = 6.80, P < 0.05), and IgG4 (χ2 = 10.16, P < 0.05). The specificity for the four antibodies was 89.7%, 82.8%, 72.4%, and 89.7%, respectively, and no significant difference was found between them. In addition, the sensitivity for detecting IgG4 antibody was significantly higher in CE I-III than in CE IV-V patients. CONCLUSION: The IgG1 antibody shows the highest detection sensitivity by HCF, thus having potential value in diagnosis of cystic echinococcosis.


Asunto(s)
Equinococosis , Animales , Anticuerpos Antiidiotipos , Anticuerpos Antihelmínticos , Líquidos Corporales , Echinococcus granulosus , Ensayo de Inmunoadsorción Enzimática , Humanos , Inmunoglobulina G , Pruebas Inmunológicas
11.
Plant Physiol ; 161(3): 1445-57, 2013 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-23321421

RESUMEN

Phytochromes (phys) encompass a diverse collection of biliproteins that enable cellular light perception by photoconverting between a red-light-absorbing ground state (Pr) and a far-red light-absorbing active state (Pfr). Based on the central role of plant phys in controlling numerous agriculturally important processes, their rational redesign offers great promise toward accelerating crop improvement. Employing as templates the available three-dimensional models of the photosensory module within bacterial phys, we report here our initial attempt to apply structure-guided mutagenesis to phy engineering using Arabidopsis (Arabidopsis thaliana) phyB, the dominant isoform in light-grown plants, as the example. A collection of phyB mutants was generated affecting the bilin-binding pocket that altered photochemistry, thermal stability, and/or nuclear localization patterns, some of which also impacted phenotypic outputs. Of particular interest are the Y361F substitution, which created Arabidopsis plants with greatly enhanced light sensitivity, mutants variably altered in Pfr-to-Pr thermal reversion and nuclear aggregation, and the D307A substitution, which failed to photoconvert from Pr to Pfr and display light-induced nuclear aggregation but retained some biological activity and accelerated turnover in red light. Taken together, this collection provides variants potentially useful to agriculture as well as new tools to better understand the molecular mechanisms underpinning phy signaling.


Asunto(s)
Proteínas de Arabidopsis/química , Arabidopsis/metabolismo , Arabidopsis/efectos de la radiación , Fototransducción/efectos de la radiación , Luz , Procesos Fotoquímicos/efectos de la radiación , Fitocromo B/química , Ingeniería de Proteínas , Absorción , Secuencia de Aminoácidos , Arabidopsis/genética , Proteínas de Arabidopsis/genética , Proteínas de Arabidopsis/metabolismo , Ácido Aspártico/metabolismo , Núcleo Celular/metabolismo , Núcleo Celular/efectos de la radiación , Hipocótilo/crecimiento & desarrollo , Hipocótilo/efectos de la radiación , Datos de Secuencia Molecular , Proteínas Mutantes/química , Proteínas Mutantes/metabolismo , Mutación/genética , Fenotipo , Fitocromo A/genética , Fitocromo B/metabolismo , Plantas Modificadas Genéticamente , Relación Estructura-Actividad , Transgenes/genética
12.
Heliyon ; 10(1): e23456, 2024 Jan 15.
Artículo en Inglés | MEDLINE | ID: mdl-38173482

RESUMEN

Current research in the field of environmental management has placed significant emphasis on understanding the reasons behind varying organizational responses to environmental responsibilities. Governance scholars emphasize the central role of institutional factors in shaping environmental responsibilities, primarily due to the substantial influence exerted by regulatory institutions. Drawing on institutional theory, we investigate how sub-national institutional factors impact a firm's green investment intensity and explore their moderating influence on the relationship between green investment and a firm's financial performance. Using a database of Chinese listed companies from 2012 to 2019, this study employs fixed effect model as a baseline regression. Our analysis demonstrates that sub-national institutions, such as state-owned enterprises (SOEs), regional development, and cross-listing, have significant and positive impact on corporate green investment. Our study further provide an evidence that green investment significantly improve firms' financial performance. Moreover, the positive effect of green investment on financial performance is stronger in SOEs and in firms of developed regions as compared to their counterparts, and weaker in cross listed firms than those of non-cross listed peers. Our study suggest that subnational institutions play an imperative role in improving environmental quality and financial performance by promoting corporate green investment. To make sure that our findings remain robust to endogeneity, we applied generalized method of moments (GMM) and propensity score matching (PSM) method. Our findings further provide implications for emerging economies with similar shareholding patterns and unbalanced regional development.

13.
PLoS One ; 19(7): e0306919, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38995939

RESUMEN

The rapid development of B2B has brought about fierce competition among suppliers, and how to gain customer attention and improve performance has become a common concern in academia and industry. This study examined the drivers and mechanisms of B2B performance from an enterprise capability perspective. We collected transaction and enterprise data from 325 suppliers on Alibaba 1688 platform and constructed a structural equation model (SEM). Results showed that supplier service capability, logistics capability, and production capacity all positively impacted B2B performance through the mediating role of customer attention. In addition, we found that service and logistics capabilities are more critical for attracting customer attention for Original Equipment Manufacturer (OEM) suppliers than for non-OEM suppliers. The findings contribute to understanding B2B commerce and provide constructive directions for B2B suppliers to improve their performance.


Asunto(s)
Comercio , Humanos , Comportamiento del Consumidor
14.
ACS Appl Mater Interfaces ; 16(33): 43880-43891, 2024 Aug 21.
Artículo en Inglés | MEDLINE | ID: mdl-39133011

RESUMEN

For numerous biological and human-machine applications, it is critical to have a stable electrophysiological interface to obtain reliable signals. To achieve this, epidermal electrodes should possess conductivity, stretchability, and adhesiveness. However, limited types of materials can simultaneously satisfy these requirements to provide satisfying recording performance. Here, we present a dry electromyography (EMG) electrode based on conductive polymers and tea polyphenol (CPT), which offers adhesiveness (0.51 N/cm), stretchability (157%), and low impedance (14 kΩ cm2 at 100 Hz). The adhesiveness of the electrode is attributed to the interaction between catechol groups and hydroxyls in the polymer blend. This adhesive electrode ensures stable EMG recording even in the presence of vibrations and provides signals with a high signal-to-noise ratio (>25 dB) for over 72 h. By integrating the CPT electrode with a liquid metal strain sensor, we have developed a bimodal rehabilitation monitoring patch (BRMP) for sports injuries. The patch utilizes Kinesio Tape as a substrate, which serves to accelerate rehabilitation. It also tackles the challenge of recording with knee braces by fitting snugly between the brace and the skin, due to its thin and stretchable design. CPT electrodes not only enable BRMP to assist clinicians in formulating effective rehabilitation plans and offer patients a more comfortable rehabilitation experience, but also hold promise for future applications in biological and human-machine interface domains.


Asunto(s)
Electrodos , Electromiografía , Humanos , Polifenoles/química , Dispositivos Electrónicos Vestibles , Conductividad Eléctrica , Adhesivos/química , Epidermis/fisiología , Adhesividad , Polímeros/química
15.
Pathol Res Pract ; 261: 155471, 2024 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-39079384

RESUMEN

BACKGROUND: Microtubule affinity regulating kinase 4 (MARK4), which is overexpressed in various tumors, is involved in the regulation of cell division, proliferation, migration, and the cell cycle, and has been considered a potential marker for cancer; however, its mechanism of action in gastric cancer (GC) remains unclear. This study aimed to investigate the role of MARK4 in the proliferation, migration, and invasion of GC cell through the MAPK/ERK signaling pathway by targeting MARK4 knockdown. METHODS: Using The Cancer Genome Atlas data and clinical information, MARK4 expression and its relationship with prognosis were analyzed. Possible pathways involving MARK4 were explored using enrichment analysis. Western blotting and real-time quantitative polymerase chain reaction were used to detect MARK4 expression in GC. After targeted transfection of siRNA, the transfection efficiency of the experimental group was detected in AGS and HGC-27 cells. The effects of knockdown MARK4 on the proliferation, migration, and invasion of GC cells were verified using CCK-8, colony formation, wound healing, and transwell assays. Finally, the relationship between MARK4, the MAPK/ERK pathway, and epithelial-mesenchymal transition in GC was verified by western blotting. RESULTS: MARK4 expression was upregulated in GC and associated with poor prognosis in patients with GC. Enrichment analysis showed that MARK4 was involved in the activation of the MAPK signaling pathway. Western blotting results indicated that MARK4 overexpression promoted the proliferation, migration, and invasion of GC cells through the MAPK/ERK pathway. CONCLUSION: MARK4 expression was upregulated in GC and promoted the proliferation, migration, and invasion of GC cells through the MAPK/ERK pathway.


Asunto(s)
Movimiento Celular , Proliferación Celular , Transición Epitelial-Mesenquimal , Sistema de Señalización de MAP Quinasas , Proteínas Serina-Treonina Quinasas , Neoplasias Gástricas , Humanos , Neoplasias Gástricas/patología , Neoplasias Gástricas/genética , Neoplasias Gástricas/metabolismo , Sistema de Señalización de MAP Quinasas/fisiología , Sistema de Señalización de MAP Quinasas/genética , Proliferación Celular/genética , Movimiento Celular/genética , Transición Epitelial-Mesenquimal/genética , Proteínas Serina-Treonina Quinasas/genética , Proteínas Serina-Treonina Quinasas/metabolismo , Línea Celular Tumoral , Regulación Neoplásica de la Expresión Génica/genética , Fenotipo , Pronóstico , Invasividad Neoplásica/genética , Masculino , Femenino , Persona de Mediana Edad
16.
PLoS One ; 19(2): e0297926, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38394172

RESUMEN

Researchers in the field of sustainable management have recently dedicated significant efforts to understand why organizations exhibit diverse responses to environmental responsibilities. Ethical scholars assert that internal management plays a pivotal role in promoting sustainability because of its attitude toward sustainable issues. In alignment with this perspective, our study formulates a framework for internal monitoring that underscores the significance of independent, female, international, and politically connected directors. We investigate how these internal monitors influence a company's commitment to promote sustainable investments for pollution prevention. By employing fixed effect model and generalized method of moments (GMM) on a dataset obtained from the largest emerging market-China over the period 2012 to 2019, our findings indicate that the mentioned monitors demonstrate a stronger commitment to pollution prevention by promoting corporate sustainable investments. In addition, our analysis reveals that when the government withdraws its involvement in enterprises, it has a notable negative impact on the connection between internal monitors and a company's efforts in pollution prevention. Our results imply that implementation of sustainable policies for pollution prevention fundamentally result from not only internal management, but also from powerful stakeholders (like government involvement). Moreover, our study educates the policy makers regarding the social consequences of governmental withdrawal.


Asunto(s)
Gobierno , Organizaciones , Femenino , Humanos , Contaminación Ambiental/prevención & control , China , Políticas
17.
Heliyon ; 10(14): e34487, 2024 Jul 30.
Artículo en Inglés | MEDLINE | ID: mdl-39130484

RESUMEN

Targeted protein degradation (TPD) allows cells to maintain a functional proteome and to rapidly adapt to changing conditions. Methods that repurpose TPD for the deactivation of specific proteins have demonstrated significant potential in therapeutic and research applications. Most of these methods are based on proteolysis targeting chimaeras (PROTACs) which link the protein target to an E3 ubiquitin ligase, resulting in the ubiquitin-based degradation of the target protein. In this study, we introduce a method for ubiquitin-independent TPD based on nanobody-conjugated plant ubiquitin regulatory X domain-containing (PUX) adaptor proteins. We show that the PUX-based NAnobody Degraders (P-NADs) can unfold a target protein through the Arabidopsis and human orthologues of the CDC48 unfoldase without the need for ubiquitination or initiating motifs. We demonstrate that P-NAD plasmids can be transfected into a human cell line, where the produced P-NADs use the endogenous CDC48 machinery for ubiquitin-independent TPD of a 143 kDa multidomain protein. Thus, P-NADs pave the road for ubiquitin-independent therapeutic TPD approaches. In addition, the modular P-NAD design combined with in vitro and cellular assays provide a versatile platform for elucidating functional aspects of CDC48-based TPD in plants and animals.

18.
J Craniomaxillofac Surg ; 52(3): 310-315, 2024 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-38212164

RESUMEN

To retrospectively review the clinical effect of comprehensive treatment of alveolar cleft (CTAC) using the mandible as the bone source. Patients with alveolar clefts who met the inclusion criteria were subjected to a CTAC protocol that included the following: (1) preoperative orthodontic treatment for creating good soft-tissue conditions; (2) 'area-like grafting' with subperiosteal osteogenic chin bone instead of cartilaginous osteogenic iliac bone; (3) simulation of normal bone anatomy via a sandwich-like bone graft consisting of 'cortical bone + cancellous bone + cortical bone'; and (4) strong internal fixation to ensure initial bone block stability. At 6 months postoperatively, the titanium plate was removed and cone-beam computed tomography was performed to evaluate the surgical results. A total of 54 patients underwent treatment with the CTAC protocol. The average age at the initial operation was 10.3 ± 2.1 years, and the average hospital stay was 2.8 ± 0.6 days. At 6 months postoperatively, 49 patients (90.7%) showed good clinical results. The transplanted bone block formed a 'cortical bone + cancellous bone + cortical bone' structure similar to that of the normal jawbone. A mature bone bridge formed, and the impacted permanent teeth continued to erupt and enter the bone graft area. CTAC is a comprehensive restorative solution for alveolar cleft repair that integrates multiple concepts, including orthodontics, embryology, anatomy, and improvements to surgical methods. The method is easy to perform, causes little surgical trauma, and shows a stable success rate, and is thus worth promoting.


Asunto(s)
Injerto de Hueso Alveolar , Labio Leporino , Fisura del Paladar , Humanos , Estudios Retrospectivos , Labio Leporino/cirugía , Hueso Esponjoso , Resultado del Tratamiento , Fisura del Paladar/diagnóstico por imagen , Fisura del Paladar/cirugía , Trasplante Óseo/métodos , Mandíbula , Injerto de Hueso Alveolar/métodos
19.
Proc Natl Acad Sci U S A ; 107(24): 10872-7, 2010 Jun 15.
Artículo en Inglés | MEDLINE | ID: mdl-20534495

RESUMEN

Phytochromes are a collection of dimeric photoreceptors that direct a diverse array of responses in plants and microorganisms through photoconversion between a red light-absorbing ground state Pr, and a far-red light-absorbing photoactivated state Pfr. Photoconversion from Pr to Pfr is initiated by a light-driven rotation within the covalently attached bilin, which then triggers a series of protein conformational changes in the binding pocket. These movements ultimately affect an appended output module, which often has reversible protein kinase activity. Propagation of the light signal from the bilin to the output module likely depends on the dimerization interface but its architecture and response to phototransformation remain unclear. Here, we used single particle cryoelectron microscopy to determine the quaternary arrangement of the phytochrome dimer as Pr, using the bacteriophytochrome (BphP) from Deinococcus radiodurans. Contrary to the long-standing view that the two monomers are held together solely via their C-terminal region, we provide unambiguous evidence that the N-terminal bilin-binding region of BphP also provides a dimerization interface with the C-terminal kinase domain appearing as a more flexible appendage. The BphP monomers dimerize in parallel with the polypeptides intimately twisting around each other in a right-handed fashion. Based on this electron microscopic picture, we propose that the light-driven conformational changes transmitted from the chromophore to the output module along the spine of this extensive dimer interface is the central feature underpinning phytochrome signaling.


Asunto(s)
Proteínas Bacterianas/química , Proteínas Bacterianas/ultraestructura , Fotorreceptores Microbianos/química , Fotorreceptores Microbianos/ultraestructura , Fitocromo/química , Fitocromo/ultraestructura , Secuencia de Aminoácidos , Proteínas Bacterianas/genética , Sitios de Unión , Microscopía por Crioelectrón , Deinococcus/química , Deinococcus/genética , Deinococcus/efectos de la radiación , Dimerización , Luz , Modelos Moleculares , Datos de Secuencia Molecular , Fotorreceptores Microbianos/genética , Fitocromo/genética , Dominios y Motivos de Interacción de Proteínas , Multimerización de Proteína , Estructura Cuaternaria de Proteína , Estructura Terciaria de Proteína , Proteínas Recombinantes/química , Proteínas Recombinantes/genética , Proteínas Recombinantes/ultraestructura
20.
Microorganisms ; 11(5)2023 May 19.
Artículo en Inglés | MEDLINE | ID: mdl-37317315

RESUMEN

Downy mildew (caused by Plasmopara viticola) and gray mold (caused by Botrytis cinerea) are fungal diseases that significantly impact grape production globally. Cytochrome b plays a significant role in the mitochondrial respiratory chain of the two fungi that cause these diseases and is a key target for quinone outside inhibitor (QoI)-based fungicide development. Since the mode of action (MOA) of QoI fungicides is restricted to a single active site, the risk of developing resistance to these fungicides is deemed high. Consequently, using a combination of fungicides is considered an effective way to reduce the development of QoI resistance. Currently, there is little information available to help in the selection of appropriate fungicides. This study used a combination of in silico simulations and quantitative structure-activity relationship (QSAR) machine learning algorithms to screen the most potent QoI-based fungicide combinations for wild-type (WT) and the G143A mutation of fungal cytochrome b. Based on in silico studies, mandestrobin emerged as the top binder for both WT Plasmopara viticola and WT Botrytis cinerea cytochrome b. Famoxadone appeared to be a versatile binder for G143A-mutated cytochrome b of both Plasmopara viticola and Botrytis cinerea. Thiram emerged as a reasonable, low-risk non-QoI fungicide that works on WT and G143A-mutated versions of both fungi. QSAR analysis revealed fenpropidin, fenoxanil, and ethaboxam non-QoIs to have a high affinity for G143A-mutated cytochrome b of Plasmopara viticola and Botrytis cinerea. Above-QoI and non-QoI fungicides can be considered for field studies in a fungicide management program against Plasmopara viticola- and Botrytis cinerea-based fungal infections.

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