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1.
Artigo em Inglês | MEDLINE | ID: mdl-38573579

RESUMO

Life cycle assessment (LCA) is widely used to evaluate product's life cycle environmental impact and identify the environmental weaknesses. However, it is difficult for existing LCA software to perform flexible LCA analysis based on the product life cycle characteristics and industry background. Meanwhile, under the existing LCA research model, product designers and manufacturers are usually not LCA evaluators, resulting in a certain time gap between the evaluation results and product improvement. Designers with less experience in green design often find it difficult to identify high environmental impact links in products at different life cycle stages and product levels, and updated products are challenging to meet various environmental restrictions. This paper establishes a multi-module product life cycle analysis model that combines product industry background that includes basic information, assessment information, structural information, and restriction information to achieve the multi-scenario of product LCA in different dimensions in a typical domain. The calculated mechanism of the dynamic power emission factor is built according to the service time and space dimensions. The proposed method forms an integrated environmental performance evaluation of household appliance (EPEHA) system. A software assessment and an optimization method are proposed to improve the EPEHA system. The results of this study show that these proposed methods can improve the timeliness and diversity of results analysis of product LCA in the field of household appliances in China. The universal data exchange format and simple operation interface of the EPEHA system enable people related to the product to quickly understand the environmental impact of the product in different scenarios, even if they lack green design knowledge and professional software training.

2.
Neuropharmacology ; 244: 109802, 2024 Feb 15.
Artigo em Inglês | MEDLINE | ID: mdl-38043643

RESUMO

Schizophrenia (SCZ) is a heterogeneous psychiatric disorder marked by impaired thinking, emotions, and behaviors. Studies have suggested a strong connection between SCZ and Alzheimer's disease (AD), however, controversies exist and the underlying mechanisms linking these two disorders remain largely unknown. Therefore, systematic studies of SCZ- and AD-related genes will provide valuable insights into the molecular features of these two diseases and their comorbidities. In this study, we obtained 331 SCZ-related genes, 650 AD-related genes, 65 shared genes between SCZ and AD. Enrichment analysis shown that these 65 shared genes were mainly involved in cognition, neural development, synaptic transmission, drug reactions, metabolic processes and immune related processes, suggesting a complex mechanism for the co-existence of SCZ and AD. In addition, we performed pathway enrichment analysis and found a total of 57 common pathways between SCZ and AD, which could be largely grouped into three modules: immune module, neurodevelopment module and cancer module. We eventually identified the potential disease-related genes whose interactions provide clues to the overlapping symptoms between SCZ and AD.


Assuntos
Doença de Alzheimer , Esquizofrenia , Humanos , Esquizofrenia/genética , Esquizofrenia/metabolismo , Doença de Alzheimer/genética , Transmissão Sináptica , Comorbidade
4.
World J Urol ; 41(11): 3097-3103, 2023 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-37698634

RESUMO

PURPOSE: This study aimed to compare the outcomes of vacuum-assisted dedusting lithotripsy (VADL) using flexible vacuum-assisted ureteral access sheath (FV-UAS) versus traditional flexible ureteroscopic lithotripsy (fURL) in patients with kidney or proximal ureteral calculi less than 3 cm in size. METHODS: A total of 371 patients who successfully underwent fURL treatment were enrolled. These patients were divided into traditional fURL group and VADL group. Outcomes of both groups were compared using 1:1 propensity score-matched analysis. Stratified analyses based on stone size and location were also conducted. RESULTS: Finally, 103 well-matched patients in each group were identified. No septic shock or death occurred. The immediate stone-free rate (SFR) and follow-up SFR of VADL group were significantly higher (78.6% vs. 50.5%, p < 0.001; 94.2%% vs. 75.7%, p < 0.001). No difference was observed in postoperative fever rate (2.9% vs. 3.9%, p = 1.000) and duration of lithotripsy (37.7 ± 20.1 min vs. 40.3 ± 18.9 min, p = 0.235). For patients with stones ≤ 2 cm in size, the immediate SFR and follow-up SFR in VADL group were higher (86.7% vs. 60.6%, p < 0.001; 96.0% vs. 83.1%, p = 0.010). The same trend was observed in the 2-3 cm subgroup (57.1% vs. 28.1%, p = 0.023; 89.3% vs. 59.4%, p = 0.009). Although the in situ fragmentation strategy was employed more frequently in VADL group for lower pole stones, the SFR was still higher. Subgroup analyses did not reveal any significant differences in either infectious complications or duration of lithotripsy. CONCLUSION: VADL technique can significantly improve the postoperative SFR for the patients with kidney or proximal ureteral stones less than 3 cm in size treated by flexible ureteroscope.


Assuntos
Cálculos Renais , Litotripsia , Cálculos Ureterais , Humanos , Cálculos Ureterais/cirurgia , Resultado do Tratamento , Ureteroscopia/métodos , Litotripsia/métodos , Rim , Cálculos Renais/cirurgia
5.
BMC Cancer ; 23(1): 637, 2023 Jul 07.
Artigo em Inglês | MEDLINE | ID: mdl-37420211

RESUMO

BACKGROUND: Hepatocellular carcinoma (HCC) is one of the most common human cancers with poor prognosis in the world. HCC has become the second leading cause of cancer-related death in China. It is urgent to identify novel biomarker and valid target to effectively diagnose, treat or predict the prognosis of HCC. It has been reported that S100A family is closely related to cell proliferation and migration of different cancers. However, the values of S100As in HCC remain to be further analyzed. METHODS: We investigated the transcriptional and translational expression of S100As, as well as the value of this family in HCC patients from the various databases. RESULTS: S100A10 was most relevant to HCC. CONCLUSIONS: The results from HCC patients' tissues and different cells also confirmed the role of S100A10 in HCC. Furthermore, we proved that S100A10 could influenced the cell proliferation of HCC cells via ANXA2/Akt/mTOR pathway. However, it would appear that the relationship between S100A10 and HCC is complex and requires more research.


Assuntos
Carcinoma Hepatocelular , Neoplasias Hepáticas , Humanos , Carcinoma Hepatocelular/genética , Neoplasias Hepáticas/genética , Biomarcadores , Proliferação de Células/genética , Linhagem Celular , Prognóstico
7.
Zookeys ; 1151: 47-65, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37235180

RESUMO

In this study, based on morphological and molecular data, a new bush frog species is described from Yunnan, China. Eleven samples of Raorchestesmalipoensissp. nov. were collected from Malipo County, southeastern Yunnan. This species can be distinguished from other congeners by a combination of 13 morphological characters. Phylogenetic analyses based on the 16S rRNA gene indicate that these individuals form a monophyletic group, and genetic divergence between this clade and its closest relatives is higher than 3.1%, which is comparable to the divergence between recognized Raorchestes species. The discovery of this new species suggests that additional extensive surveys in the southeastern Yunnan would yield more amphibian lineages yet unknown to science.

8.
J Transl Med ; 21(1): 182, 2023 03 08.
Artigo em Inglês | MEDLINE | ID: mdl-36890558

RESUMO

BACKGROUND: Psoriasis is a common, chronic and relapsing immune-related inflammatory dermal disease. Patients with psoriasis suffering from the recurrences is mainly caused by immune response disorder. Thus, our study is aimed to identify novel immune subtypes and select targeted drugs for the precision therapy in different subtypes of psoriasis. METHODS: Differentially expressed genes of psoriasis were identified from the Gene Expression Omnibus database. Functional and disease enrichment were performed by Gene Set Enrichment Analysis and Disease Ontology Semantic and Enrichment analysis. Hub genes of psoriasis were selected from protein-protein interaction networks using Metascape database. The expression of hub genes was validated in human psoriasis samples by RT-qPCR and immunohistochemistry. Further, novel immune subtypes of psoriasis were identified by ConsensusClusterPlus package and its association with hub genes were calculated. Immune infiltration analysis was performed, and its candidate drugs were evaluated by Connectivity Map analysis. RESULTS: 182 differentially expressed genes of psoriasis were identified from GSE14905 cohort, in which 99 genes were significantly up-regulated and 83 genes were down-regulated. We then conducted functional and disease enrichment in up-regulated genes of psoriasis. Five potential hub genes of psoriasis were obtained, including SOD2, PGD, PPIF, GYS1 and AHCY. The high expression of hub genes was validated in human psoriasis samples. Notably, two novel immune subtypes of psoriasis were determined and defined as C1 and C2. Bioinformatic analysis showed C1 and C2 had different enrichment in immune cells. Further, candidate drugs and mechanism of action that applicable to different subtypes were evaluated. CONCLUSIONS: Our study identified two novel immune subtypes and five potential hub genes of psoriasis. These findings might give insight into the pathogenesis of psoriasis and provide effective immunotherapy regimens for the precise treatment of psoriasis.


Assuntos
Psoríase , Humanos , Psoríase/genética , Biologia Computacional , Bases de Dados Factuais , Sistemas de Liberação de Medicamentos , Imunoterapia , Perfilação da Expressão Gênica
9.
J Cell Mol Med ; 27(4): 538-552, 2023 02.
Artigo em Inglês | MEDLINE | ID: mdl-36729917

RESUMO

Hepatocellular carcinoma (HCC) is the fourth leading cause of cancer-related deaths among cancer patients. Vascular endothelial growth factor A (VEGFA) is involved in regulating biological processes, such as angiogenesis and vascular permeability, and is very closely related to the pathogenesis of various tumours, especially vascular-rich, solid tumours. Clinical data of patients with HCC and other tumours were analysed through public databases, such as the TCGA database, Gene Expression Omnibus database, Human Protein Atlas database, STRING, Tumour Immune Estimation Resource and Kaplan-Meier Plotter. The tumour tissues and adjacent normal tissues of patients with HCC from Hunan Provincial People's Hospital were collected to verify the expression of VEGFA by immunohistochemistry, immunofluorescence, Western blotting and qPCR. VEGFA expression is elevated in multiple tumour types and correlates with the prognosis of tumour patients. VEGFA is involved in regulating the tumour microenvironment and immune cell function in tumour development. Inhibition of VEGFA reduces proliferation, invasion, and migration and promotes apoptosis in HCC cells. VEGFA is a potential predictive biomarker for the diagnosis and prognosis of HCC.


Assuntos
Carcinoma Hepatocelular , Neoplasias Hepáticas , Humanos , Carcinoma Hepatocelular/patologia , Neoplasias Hepáticas/patologia , Fator A de Crescimento do Endotélio Vascular/genética , Fator A de Crescimento do Endotélio Vascular/metabolismo , Prognóstico , Linhagem Celular Tumoral , Movimento Celular/genética , Proliferação de Células/genética , Biomarcadores Tumorais/genética , Microambiente Tumoral/genética
10.
Am J Chin Med ; 51(3): 701-721, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36823098

RESUMO

Intrahepatic cholangiocarcinoma (ICC) is a rare, highly fatal hepatobiliary malignancy, with very limited treatment options and, consequently, a poor prognosis. Recently, emerging evidence has suggested the potential of quercetin (QE) for use in cancer therapy. The purpose of this study is to investigate whether QE could inhibit ICC. The effects of QE on the proliferation, apoptosis, and invasion of ICC were analyzed in vitro. The inhibitory effect of QE on ICC was also verified in vivo. The RNA sequence was applied to explore the mechanism of QE. Functional verification was also performed after RNA sequencing using activators and inhibitors of nuclear factor-kappa-B (NF-[Formula: see text]B) and ferroptosis. The results showed that QE could inhibit the proliferation and survival of ICC cells, induce the arrest of ICC cells in the G1 phase, promote the apoptosis of ICC cells, and inhibit the invasion of ICC cells. Furthermore, QE could promote ferroptosis in ICC cells by inhibiting the NF-[Formula: see text]B pathway. In conclusion, QE is a new ferroptosis inducer and NF-[Formula: see text]B inhibitor that can not only induce ferroptosis, but also inhibit the invasion of ICC cells, providing a prospective strategy for the treatment of ICC.


Assuntos
Neoplasias dos Ductos Biliares , Colangiocarcinoma , Ferroptose , Humanos , Quercetina/farmacologia , Quercetina/uso terapêutico , Colangiocarcinoma/tratamento farmacológico , Colangiocarcinoma/genética , Linhagem Celular Tumoral , Ductos Biliares Intra-Hepáticos/metabolismo , Ductos Biliares Intra-Hepáticos/patologia , Neoplasias dos Ductos Biliares/tratamento farmacológico , Neoplasias dos Ductos Biliares/genética
11.
Surg Infect (Larchmt) ; 24(1): 75-81, 2023 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-36579922

RESUMO

Abstract Background: To investigate retrospectively whether changes in serum albumin levels within one hour of flexible ureteroscopy (fURS) lithotripsy can be used as a predictor of post-operative urosepsis. Patients and Methods: Eligible patients with unilateral upper urinary calculi who underwent fRUS lithotripsy performed by a single surgeon at our center were included in the analysis. The patients were divided into sepsis and non-sepsis groups. The change ratio of albumin and white blood cell (WBC) count was calculated by post-operative/pre-operative index*100%. Univariable and multivariable logistic regression analyses were used to assess whether there was a correlation between risk factors and post-operative urosepsis. The receiver operating characteristic (ROC) curve was used to analyze factors that showed significant differences in multivariable logistic regression analysis. Results: A total of 314 patients were included in the analysis, 20 of whom had post-operative urosepsis and five developed septic shock; no deaths occurred. Multivariable logistic regression analysis showed that urine culture results, WBC counts within one hour after surgery, post-operative albumin levels, and the degree of albumin changes after surgery were independent predictors of post-operative urosepsis. Receiver operating characteristic curve analysis showed that noteworthy hypoalbuminemia after surgery and positive pre-operative urine culture could help screen high-risk patients for post-operative urosepsis effectively. Conclusions: Hypoalbuminemia shortly after operation can be utilized as a predictor for early diagnosis of post-operative urosepsis in patients undergoing fURS lithotripsy.


Assuntos
Hipoalbuminemia , Litotripsia , Sepse , Infecções Urinárias , Humanos , Estudos Retrospectivos , Ureteroscopia/efeitos adversos , Ureteroscopia/métodos , Hipoalbuminemia/epidemiologia , Sepse/diagnóstico , Sepse/epidemiologia , Sepse/etiologia , Litotripsia/efeitos adversos , Infecções Urinárias/etiologia , Infecções Urinárias/complicações , Albuminas
12.
Zootaxa ; 5175(4): 463-477, 2022 Aug 18.
Artigo em Inglês | MEDLINE | ID: mdl-36095351

RESUMO

A new species Andropromachus ynau sp. nov.. is described and the Chinese species of the moss-like stick insect genus Andropromachus are reviewed. An updated key to the known species of this genus is provided. Types of the new species are deposited in Yunnan Agricultural University (YNAU).


Assuntos
Briófitas , Neópteros , Animais , China , Humanos , Insetos , Universidades
13.
Medicine (Baltimore) ; 101(36): e30349, 2022 Sep 09.
Artigo em Inglês | MEDLINE | ID: mdl-36086719

RESUMO

RATIONALE: Colon cancer has a distinct migration aptitude. However, pancreatic metastasis is rare and treatment of inoperable pancreatic cancers is seldom seen. PATIENT CONCERNS: A 47-year-old woman presented 2-month history of abdominal pain and abdominal distention, with anal cessation of exhaust and defecation for 4 days. A colon cancer radical resection was performed when she diagnosed with colon cancer. After 26 months, the patient complained shoulder and back pain. Multiple intraperitoneal metastases and nonisolated pancreatic metastasis of colon cancer were diagnosed. DIAGNOSIS: Metastatic pancreatic adenocarcinoma (MPA) with primary colon cancer. INTERVENTION: Iodine-125 seed implantation combined chemotherapy. OUTCOMES: She remains free of cancer metastasis and recurrence, and has a good quality of life during the period. LESSONS SUBSECTIONS: Iodine-125 seed implantation is an effective and safe strategy for unresectable metastatic pancreatic cancer. Iodine-125 seed implantation combined with chemotherapy improve survival for advanced pancreatic metastasis of colon cancer.


Assuntos
Adenocarcinoma , Neoplasias do Colo , Neoplasias Pancreáticas , Adenocarcinoma/patologia , Adenocarcinoma/terapia , Neoplasias do Colo/patologia , Neoplasias do Colo/terapia , Feminino , Humanos , Radioisótopos do Iodo , Pessoa de Meia-Idade , Neoplasias Pancreáticas/tratamento farmacológico , Qualidade de Vida , Neoplasias Pancreáticas
14.
J Invest Dermatol ; 142(8): 2228-2237.e4, 2022 08.
Artigo em Inglês | MEDLINE | ID: mdl-35131256

RESUMO

Metastasis is the main reason for the high mortality of patients and indeed a difficult task in the treatment of cutaneous melanoma. Therefore, it is of great clinical value to explore the molecular mechanism of cutaneous metastatic melanoma and develop novel therapies. MED1, acting as a factor required for activator-dependent transcription, is reported to be involved in carcinogenesis and progression. In this study, we found that MED1 was highly expressed in patients with cutaneous melanoma. MED1 downregulation could induce cellular epithelial-to-mesenchymal transition and promote migration, invasion, and metastasis of cutaneous melanoma in vivo and in vitro. Further analysis showed that in Med1 knockdown cells, the TGFß/SMAD2 signaling pathway mediated an increase in epithelial-to-mesenchymal transition phenotype and migration. The opposite results were observed after treatment with TGFß inhibitors. To further explore the mechanism, we found that MED1 interacted with SMAD2, and MED1 downregulation could protect SMAD2 from degradation by inhibiting SMAD2 ubiquitination. Together, these results suggest that MED1 inhibited TGFß signaling pathway to reduce cell epithelial-to-mesenchymal transition phenotype and migration through SMAD2 ubiquitination in the metastasis of cutaneous melanoma. Our findings elucidated the role of MED1 in the metastasis of cutaneous melanoma and provided a target for the therapeutic strategies of cutaneous melanoma.


Assuntos
Subunidade 1 do Complexo Mediador , Melanoma , Neoplasias Cutâneas , Proteína Smad2 , Linhagem Celular Tumoral , Movimento Celular/genética , Regulação para Baixo , Transição Epitelial-Mesenquimal , Humanos , Subunidade 1 do Complexo Mediador/genética , Subunidade 1 do Complexo Mediador/metabolismo , Melanoma/patologia , Transdução de Sinais/genética , Neoplasias Cutâneas/patologia , Proteína Smad2/metabolismo , Fator de Crescimento Transformador beta/metabolismo , Ubiquitinação
15.
J Immunol ; 208(6): 1424-1433, 2022 03 15.
Artigo em Inglês | MEDLINE | ID: mdl-35197329

RESUMO

NF-erythroid 2-related factor 2 (Nrf2) is a major transcription factor to protect cells against reactive oxygen species (ROS) and reactive toxicants. Meanwhile, Nrf2 can inhibit contact dermatitis through redox-dependent and -independent pathways. However, the underlying mechanisms of how Nrf2 mediates irritant contact dermatitis (ICD) are still unclear. In this article, we elucidated the role of Nrf2 in 12-O-tetradecanoylphorbol-13-acetate (TPA)-induced acute ICD. Our study demonstrated that the ear thickness, redness, swelling, and neutrophil infiltration were significantly increased, accompanied by increased expression of inflammatory cytokines (IL-1α, IL-1ß, IL-6, etc.) and decreased expression of antioxidant genes (HO-1 and NQO1) in Nrf2 knockout mice. Moreover, ERK phosphorylation was elevated in mouse embryonic fibroblasts (MEFs) from Nrf2 knockout mouse. Inhibition of ERK significantly alleviated TPA-induced cutaneous inflammation and ROS accumulation in MEFs derived from mouse. Conversely, ROS scavenging inhibited the ERK activation and TPA-induced inflammation in MEFs. Taken together, the findings illustrate the key role of the Nrf2/ROS/ERK signaling pathway in TPA-induced acute ICD.


Assuntos
Dermatite de Contato , Fator 2 Relacionado a NF-E2 , Animais , Camundongos , Fibroblastos/metabolismo , Heme Oxigenase-1/metabolismo , Inflamação , Irritantes , Camundongos Knockout , Fator 2 Relacionado a NF-E2/genética , Fator 2 Relacionado a NF-E2/metabolismo , Espécies Reativas de Oxigênio/metabolismo , Transdução de Sinais , Acetato de Tetradecanoilforbol
16.
Biochem Biophys Res Commun ; 591: 1-6, 2022 02 05.
Artigo em Inglês | MEDLINE | ID: mdl-34986435

RESUMO

Scleroderma, characterized by extensive fibrosis and vascular alterations, involves excessive fibroblast activation, uncontrolled inflammation, and abnormal collagen deposition. Previous studies showed that administrations of either 1,25(OH)2D3 or vitamin D analog effectively decreased or reversed skin fibrosis by regulating the extracellular matrix homeostasis. The actions of 1,25(OH)2D3 are mediated by the vitamin D receptor (VDR), a transcription regulator crucial for skin homeostasis. Although evidence suggests that keratinocyte-fibroblast interaction influences the development of scleroderma, the role of keratinocytes in scleroderma remains unknown. Here, we demonstrated that the ablation of VDR in keratinocytes greatly exacerbated dermal fibrosis in HOCl-induced scleroderma in mice. The deficiency of VDR in the epidermis marked increased dermal thickness, inflammatory cell infiltration, and severe collagen deposition in comparison to the control group in HOCl-treated skin. Moreover, significant elevations in expression levels of mRNA for collagen overproduction (Col1A1, Col1A2, Col3A1, α-SMA, MMP9, TGF-ß1) and proinflammatory cytokines (IL-1ß, IL-6, CXCL1, CXCL2) were observed in VDR conditional KO versus control mice following HOCl treatment. Collectively, these results suggest that VDR in keratinocytes plays a pivotal role in scleroderma progression, and the interplay between keratinocytes and fibroblasts deserves more attention regarding the exploration of the pathogenesis and treatment for scleroderma.


Assuntos
Derme/patologia , Inflamação/patologia , Queratinócitos/patologia , Receptores de Calcitriol/deficiência , Dermatopatias/patologia , Animais , Colágeno/biossíntese , Modelos Animais de Doenças , Fibrose , Ácido Hipocloroso , Inflamação/genética , Camundongos Endogâmicos C57BL , Camundongos Knockout , Receptores de Calcitriol/metabolismo , Dermatopatias/genética , Regulação para Cima/genética
18.
Biochem Biophys Rep ; 24: 100869, 2020 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-33336085

RESUMO

Disruption of epidermal barrier is an important trigger in abnormal cutaneous inflammation. Phospholipase C epsilon (PLCε), a Ras/Rap1 effector, is essential for regulating cytokines production in different types of skin inflammation. Our previous studies have demonstrated that elevated expression of PLCε participates in the psoriasis-like inflammation in PLCε overexpressing transgenic mice model, while the reduction in PLCε expression attenuates inflammatory responses in either TPA- or DNFB-induced cutaneous inflammation. Here, we determined the role of PLCε in cutaneous inflammation induced by acute abrogation of epidermal permeability barrier. In comparison to wild type controls, PLCε KO mice exhibited reduced ear swelling and infiltration of granulocytes after tape-stripping. Moreover, expression levels of pro-inflammatory cytokines (IL-1α, IL-1ß), chemokines (CXCL-1, CXCL-2, CCL20), and antimicrobial peptides (S100 proteins, MBD3) were lower in PLCε-deficient versus wild type mice. Likewise, expression levels of cytokines and chemokines were also lower in PLCε deficient keratinocytes and fibroblasts following IL-22 stimulation in vitro. Furthermore, knockdown of PLCε with its siRNA decreased expression of IL-1α, CCL20, and S100 proteins, and MBD3 in HEK cultures. Collectively, these results suggested that PLCε mediated cytokine cascade induced by acute barrier disruption. IL-22 is likely the upstream of PLCε-mediated cytokine cascade following acute barrier disruption.

19.
RSC Adv ; 10(33): 19247-19253, 2020 May 20.
Artigo em Inglês | MEDLINE | ID: mdl-35515441

RESUMO

The reduction of p-chloronitrobenzene (p-CNB) by sulfate green rust (GRSO4 ) was systematically studied. The results revealed that GRSO4 has a good removal effect on p-CNB. The removal efficiencies of p-CNB by GRSO4 improved with the increase of the pH value. The removal efficiencies in the presence of ions were better than that of GRSO4 alone, while natural organic matter (NOM) could adsorb p-CNB, which competed with GRSO4 . The reductions of p-CNB by GRSO4 under different conditions followed pseudo-first-order reaction kinetics except for the reactions in the presence of NOM. p-CNB was converted into p-chloroaniline (p-CAN), which produced p-nitrosochlorobenzene and p-chlorophenylhydroxylamine as the intermediate products. The results of the X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) showed GRSO4 was gradually transformed into goethite. Fe(ii) in the GRSO4 structure was the main electron donor involved in the reaction.

20.
Exp Dermatol ; 28(8): 956-960, 2019 08.
Artigo em Inglês | MEDLINE | ID: mdl-31168829

RESUMO

Because of the importance of epidermal functions, including stratum corneum hydration and maintenance of permeability barrier homeostasis, in the pathogenesis of a variety of cutaneous and systemic disorders, a wide range of products has been developed to improve epidermal functions. However, the underlying mechanisms whereby certain products, including heparinoid-containing product, are far little understood. In the present study, we assessed the impact of a heparinoid-containing product, Hirudoid® cream, on epidermal permeability barrier function and expression levels of a panel of epidermal mRNA related to the formation/maintenance of the permeability barrier in mouse skin. Our results showed that while the baseline levels of transepidermal water rates remained unchanged, treatment with Hirudoid® cream twice daily for 7 days significantly accelerated permeability barrier recovery and increased stratum corneum hydration. In parallel, expression levels of epidermal mRNA for certain differentiation marker-related proteins, lipid synthetic enzymes, keratinocyte proliferation and antimicrobial peptides also increased significantly. Together, these results provide the underlying mechanisms by which topical Hirudoid® cream improves epidermal permeability barrier and antimicrobial function. Because of its benefits for epidermal functions, heparinoid-containing product could be more useful in the management of skin conditions, characterized by abnormal permeability barrier and antimicrobial function.


Assuntos
Epiderme/efeitos dos fármacos , Epiderme/metabolismo , Heparinoides/farmacologia , Administração Cutânea , Animais , Avaliação Pré-Clínica de Medicamentos , Homeostase , Camundongos Endogâmicos C57BL , Permeabilidade/efeitos dos fármacos
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