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1.
Pest Manag Sci ; 80(1): 122-132, 2024 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-37036068

RESUMEN

Discovery of environmentally friendly agents for controlling alien invasive species (AIS) is challenging and in urgent need as their expansion continues to increase. Xanthium italicum is a notorious invasive weed that has caused serious ecological and economic impacts worldwide. For the purpose of exploring the possibility of utilizing herbicidal mycotoxins to control this species, three compounds, a new compound, curvularioxide (1), a new naturally occurring compound, dehydroradicinin (2), and a known compound, radicinin (3), were isolated via activity-guided fractionation from the secondary metabolites of the pathogenic Curvularia inaequalis, which was found to infect X. italicum in natural habitats. All isolated compounds exhibited potent herbicidal activity on receiver species. It is noteworthy to mention that their effects on X. italicum in our bioassays were equivalent to the commercial herbicide glyphosate. Subsequent morphological analysis revealed that application of radicinin (3) severely hindered X. italicum seedlings' hypocotyl and root development. Malondialdehyde content and the activity of catalase and peroxidase of the seedlings were also significantly different from the control, implying the occurrence of induced oxidative stress. Our results suggest that pathogens infecting invasive plants might be valuable resources for developing safer herbicides for controlling weeds. © 2023 Society of Chemical Industry.


Asunto(s)
Herbicidas , Micotoxinas , Xanthium , Herbicidas/farmacología , Herbicidas/química , Micotoxinas/farmacología , Malezas , Plantones , Especies Introducidas , Control de Malezas
2.
Biomed Pharmacother ; 164: 114946, 2023 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-37257229

RESUMEN

Guaiane-type sesquiterpenoids are most prevalent in the genus Cinnamomum. Hence this study investigates the structures, anti-nociceptive and IL-6 targeted anti-inflammatory potential of three novels C-14 guaiane-type sesquiterpenoids and two new monoterpenoids, isolated from Cinnamomum migao. The structures were precisely confirmed and characterized through the modern chromatographic and spectroscopic techniques of HRESIMS, 1D NMR, 2D NMR, experimental circular dichroism (ECD), and calculated (ECD). Novel sesquiterpenoids 1 and 2 exhibited significant anti-inflammatory activities against the NO production and pro-inflammatory cytokines. Their IC50 values were determined as 9.52 and 13.42 µΜ against IL-6 mRNA, respectively. Similarly, subcutaneous injection of n-BuT and EA extracts showed a dose-dependent suppression of formalin-induced tonic biting/licking responses during the tonic antinociceptive phase. Furthermore, absorption, distribution, metabolism, excretion, and toxicity (ADMET) analysis of guaiane-type sesquiterpenoids 1 and 2 displayed that both compounds have a high level of GIT absorption, with a high zone of safety for cardiac and hepatotoxicity and no inhibition of cytochromes. In addition, molecular docking and simulation studies strengthen the anti-inflammatory potential of sesquiterpene 2 which showed a good binding affinity with IL-6 protein. Overall the inclusive results showed that the extracts and newly isolated guaiane-type sesquiterpenoids from C. migao will provide new evidence for the traditional use of this species to treat inflammation and nociception.


Asunto(s)
Interleucina-6 , Sesquiterpenos , Simulación del Acoplamiento Molecular , Estructura Molecular , Antiinflamatorios/farmacología , Sesquiterpenos de Guayano/farmacología , Extractos Vegetales , Sesquiterpenos/química
3.
Artículo en Inglés | MEDLINE | ID: mdl-36760471

RESUMEN

Background: QiHuangYiShen granules (QHYS), a traditional Chinese herbal medicine formula, have been used in clinical practice for treating diabetic kidney disease for several years by our team. The efficacy of reducing proteinuria and delaying the decline of renal function of QHYS has been proved by our previous studies. However, the exact mechanism by which QHYS exerts its renoprotection remains largely unknown. Emerging evidence suggests that lncRNA MALAT1 is abnormally expressed in diabetic nephropathy (DN) and can attenuate renal fibrosis by modulating podocyte epithelial-mesenchymal transition (EMT). Objective: In the present study, we aimed to explore whether QHYS could modulate lncRNA MALAT1 expression and attenuate the podocyte EMT as well as the potential mechanism related to the Wnt/ß-catenin signal pathway. Methods: SD rats were fed with the high-fat-high-sucrose diet for 8 weeks and thereafter administered with 30 mg/kg streptozotocin intraperitoneally to replicate the DN model. Quality control of QHYS was performed using high-performance liquid chromatography. QHYS were orally administered at 1.25, 2.5, and 5 g/kg doses, respectively, to the DN model rats for 12 weeks. Body weight, glycated haemoglobin, blood urea nitrogen, serum creatinine, 24-h proteinuria, and kidney index were measured. The morphologic pathology of the kidney was evaluated by Hematoxylin-eosin and Masson's trichrome staining. The expression level of lncRNA MALAT1 was determined by quantitative real-time polymerase chain reaction. In addition, the expression levels of podocyte EMT protein markers and Wnt/ß-catenin pathway proteins in renal tissues were evaluated by Western blotting and immunohistochemistry. Results: The results showed that QHYS significantly reduced 24-h proteinuria, blood urea nitrogen, kidney index, and ameliorated glomerular hypertrophy and collagen fiber deposition in the kidney of DN rats. Importantly, QHYS significantly downregulated the expression level of lncRNA MALAT1, upregulated the expression of nephrin, the podocyte marker protein, downregulated the expression of desmin and FSP-1, and mesenchymal cell markers. Furthermore, QHYS significantly downregulated the expression levels of Wnt1, ß-catenin, and active ß-catenin. Conclusion: Conclusively, our study revealed that QHYS significantly reduced proteinuria, alleviated renal fibrosis, and attenuated the podocyte EMT in DN rats, which may be associated with the downregulation of lncRNA MALAT1 expression and inhibition of the Wnt/ß-catenin pathway.

4.
Fitoterapia ; 164: 105357, 2023 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-36460204

RESUMEN

Two new flavonoid glycosides scutelikiosides A and B (13 and 23), along with twenty-one known compounds from the 75% ethanol extract of roots of Scutellaria likiangensis Diels. Their structures were determined by the comprehensive analyses of the spectroscopic data (1D NMR, 2D NMR, HRESIMS, and CD) and physicochemical properties. Compounds 4-14, 17-19, 21, and 22 were evaluated for their in vivo antimalarial activities against Plasmodium yoelii BY265RFP in mice. Compound 17 exhibited significant activity close to artemisinin with an inhibition ratio of 29.2%, and compounds 6, 9-12, 14, 18, 19, and 22 exhibited moderate antimalarial activities with inhibition ratios ranging from 10.2% to 20.0% at a dose of 25 mg/kg/day. In addition, a summary of preliminary structure-activity relationship of isolated flavonoids for in vivo antimalarial activity was described.


Asunto(s)
Antimaláricos , Scutellaria , Ratones , Animales , Flavonoides/química , Antimaláricos/farmacología , Scutellaria/química , Estructura Molecular , Glicósidos/farmacología
5.
Metab Brain Dis ; 37(8): 2903-2914, 2022 12.
Artículo en Inglés | MEDLINE | ID: mdl-36070047

RESUMEN

Kaixinsan powder (KXS), a classic prescription of traditional Chinese Medicine (TCM), is widely used in the treatment of depression, but its mechanism remains unclear. The network pharmacology method was used to constructe the "herb-component-target" network, and elucidated KXS potential mechanisms of action in the treatment of depression. Moreover, molecular docking was applied to valid the important interactions between the ingredients and the target protein. The "herb-component-target" network indicated that the ingredients of Girinimbin, Gomisin B and Asarone, and the protein targets of ESR, AR and NR3C1 mostly contribute to the antidepressant effect of KXS. KEGG pathway analysis highlighted the most significant pathways associated with depression treatment, including neuroactive ligand-receptor interaction pathway, serotonergic synapse pathway, PI3K-Akt signaling pathway and MAPK signaling pathway. Go enrichment analysis indicated that the mechanism of KXS in treating depression was involved in the biological process of GPCR signal transduction, hormone metabolism and nerve cell apoptosis. Moreover, molecular docking results showed that Polygalaxanthone III, Girinimbine and Pachymic acid performed greater binding ability with key antidepressant target 5-HTR. In conclusion, this study preliminarily revealed key active components in KXS, including Gomisin B, Asarone, Ginsenoside Rg1, Polygalaxanthone III and Pachymic acid, could interact with multiple targets (5-HTR, DR, ADRA, AR, ESR, NR3C1) and modulate the activation of multiple pathways (Neuroactive ligand -receptor interaction pathway, serotonergic synapse pathway, PI3K-Akt signaling pathway and MAPK signaling pathway).


Asunto(s)
Depresión , Fosfatidilinositol 3-Quinasas , Polvos , Simulación del Acoplamiento Molecular , Depresión/tratamiento farmacológico , Ligandos , Proteínas Proto-Oncogénicas c-akt , Antidepresivos/farmacología , Antidepresivos/uso terapéutico
6.
Zhongguo Zhong Yao Za Zhi ; 47(18): 4959-4965, 2022 Sep.
Artículo en Chino | MEDLINE | ID: mdl-36164905

RESUMEN

Twelve flavonoids were isolated and purified from the ethyl acetate fraction of 95% ethanol extract of Dalbergia odorifera by heat reflux extraction, solvent extraction, recrystallization, normal phase silica gel, Sephadex LH-20, MCI gel and HPLC methods. The structures were identified with multiple spectroscopic methods, including 1 D-NMR, 2 D-NMR and MS. The compounds were identified as 6,7,8-trimethoxy-5,4'-dihydroxy isoflavone(1), medicarpin(2), 7,2'-dihydroxy-4'-methoxy-isoflavanol(3), biochanin A(4), prunetin(5), genistein(6), pratensein(7), 3-(4-hydroxyphenyl)-6-isopentenyl-7-methoxy-4H-chromen-4-one(8), tectorigenin(9), irisolidone(10), vestitol(11), and formononetin(12). Compound 1 was a new isoflavone, and compound 8 was isolated from D. odorifera for the first time. The results showed that compounds 1-3 had inhibitory effects on tyrosinase, with inhibition rates of 35.58%, 38.63% and 51.34% at the concentration of 1.0 mmol·L~(-1), respectively.


Asunto(s)
Dalbergia , Isoflavonas , Dalbergia/química , Etanol , Flavonoides/química , Genisteína , Isoflavonas/química , Isoflavonas/farmacología , Monofenol Monooxigenasa , Extractos Vegetales/química , Extractos Vegetales/farmacología , Gel de Sílice , Solventes
7.
Food Funct ; 13(17): 8850-8859, 2022 Aug 30.
Artículo en Inglés | MEDLINE | ID: mdl-35920249

RESUMEN

A number of studies demonstrated that some tea extracts exert inhibitory effects on osteoclastogenesis induced by receptor activator of nuclear factor κB ligand (RANKL). However, the effect of purple tea, a famous tea in China, on osteoclastogenesis remains unclear. In this study, a water-based purple tea extract (PTE) was found to suppress osteoclast formation, osteoclastic resorption pit area formation, and F-actin ring formation within RANKL-stimulated bone marrow macrophages (BMMs). Furthermore, our results demonstrated that PTE could inhibit expression of master transcription factors NFATc1 and c-Fos and their target genes DC-STAMP, Ctsk, and Atp6v0d2. Western blot analysis revealed that PTE treatment led to reduced RANKL-induced phosphorylation of Akt and GSK3ß without altering transient activation of NF-κB and MAPKs (p38, JNK, ERK1/2) signaling. In addition, the results demonstrated that PTE treatment of RANKL-stimulated BMMs could down-regulate Blimp1 expression and up-regulate Irf8 expression. In summary, these results suggest that PTE treatment of RANKL-stimulated BMMs inhibited osteoclast differentiation via modulation of Blimp1-Irf8 and Akt/GSK3ß signaling pathways. Aligning with our in vitro results, in vivo PTE administration ameliorated bone loss in LPS-treated mice. Taken together, the results presented in this work suggest that PTE treatment possesses anti-osteolytic activity.


Asunto(s)
Resorción Ósea , Ligando RANK , Animales , Resorción Ósea/tratamiento farmacológico , Resorción Ósea/genética , Resorción Ósea/metabolismo , Diferenciación Celular , Glucógeno Sintasa Quinasa 3 beta/genética , Glucógeno Sintasa Quinasa 3 beta/metabolismo , Ratones , FN-kappa B/genética , FN-kappa B/metabolismo , Factores de Transcripción NFATC/genética , Factores de Transcripción NFATC/metabolismo , Osteoclastos , Osteogénesis , Proteínas Proto-Oncogénicas c-akt/genética , Proteínas Proto-Oncogénicas c-akt/metabolismo , Ligando RANK/metabolismo , Té/metabolismo , Agua/metabolismo
8.
Artículo en Inglés | MEDLINE | ID: mdl-35770417

RESUMEN

OBJECTIVE: Chemotherapy induced phlebitis (CIP) is a side product of chemotherapy treatment for malignant tumors, which affects the therapeutic effect and quality of life of cancer patients, and still lacks a clear therapeutic means. In this study, we investigated the therapeutic effects of QLTMP on CIP using network pharmacology and verified the anti-inflammatory mechanism of QLTMP in mice model induced by vinorelbine. METHODS: Network pharmacology analysis was performed to identify bioactive compounds in QLTMP. The protein-protein interaction network was used to identify the core therapeutic targets of QLTMP against CIP. Analyzed biological function and pathway enrichment based on the identified core therapeutic targets. Evaluate the therapeutic effect of QLTMP in a model of CIP induced by vinorelbine to confirm the reliability of the network pharmacological analysis. MATERIALS AND METHODS: The 165 bioactive compounds of QLTMP matched the screening criteria and identified 19 core therapeutic targets of QLTMP against CIP. Biofunctional analysis showed that the therapeutic effect of QLTMP on CIP was mainly related to the inhibition of inflammation; while pathway enrichment analysis showed that TNF signaling pathway was involved in the inflammatory process. Experimental confirmation in mice model showed that QLTMP exerts anti-inflammatory effects through modulation of PI3K/AKT/TNF signaling pathway, a discovery consistent with the network pharmacological analysis. DISCUSSION AND CONCLUSIONS: The network pharmacological analysis of the anti-inflammatory mechanism of QLTMP on CIP and its exploration of in vivo experiments provide a theoretical basis for the design of agents that can mitigate or cure CIP.

9.
Food Funct ; 13(12): 6450-6466, 2022 Jun 20.
Artículo en Inglés | MEDLINE | ID: mdl-35661189

RESUMEN

Colorectal cancer (CRC) is among the most common malignant diseases with high morbidity and mortality rates. Ginseng and its major extracts, ginsenosides, have been used in medical fields for thousands of years. In particular, their huge anti-cancer potential has drawn a great deal of attention in recent years. There is a large body of evidence that has shown that ginseng and its extracts could significantly inhibit tumor development and progression by suppressing cell proliferation, tumor growth, invasion and metastasis, inducing tumor cell apoptosis, regulating tumor-associated immune responses, and improving the therapeutic effect of chemotherapy. Notably, different subtypes of ginsenosides, even those extracted from the same ginseng, have exhibited distinct anti-cancer functions through different mechanisms. Over the past few years, a large number of studies have focused on how ginseng or various ginsenosides influence CRC development. Therefore, the roles and the potential of ginseng and ginsenosides in the treatment of CRC are summarized in this review. In addition, the biochemical properties of ginseng and ginsenosides are also briefly described.


Asunto(s)
Neoplasias Colorrectales , Ginsenósidos , Panax , Proliferación Celular , Neoplasias Colorrectales/tratamiento farmacológico , Ginsenósidos/química , Ginsenósidos/farmacología , Ginsenósidos/uso terapéutico , Humanos , Panax/química , Extractos Vegetales/farmacología , Extractos Vegetales/uso terapéutico
10.
EBioMedicine ; 80: 104026, 2022 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-35576643

RESUMEN

BACKGROUND: There have been mixed reports on the beneficial effects of meditation in cardiovascular disease (CVD), which is widely considered the leading cause of death worldwide. METHODS: To clarify the role of meditation in modulating the heart-brain axis, we implemented an extreme phenotype strategy, i.e., Tibetan monks (BMI > 30) who practised 19.20 ± 7.82 years of meditation on average and their strictly matched non-meditative Tibetan controls. Hypothesis-free advanced proteomics strategies (Data Independent Acquisition and Targeted Parallel Reaction Monitoring) were jointly applied to systematically investigate and target the plasma proteome underlying meditation. Total cholesterol, low-density lipoprotein cholesterol  (LDL-C), apolipoprotein B (Apo B) and lipoprotein (a) [Lp(a)] as the potential cardiovascular risk factors were evaluated. Heart rate variability (HRV) was assessed by electrocardiogram. FINDINGS: Obesity, hypertension, and reduced HRV is offset by long-term meditation. Notably, meditative monks have blood pressure and HRV comparable to their matched Tibetan controls. Meditative monks have a protective plasma proteome, related to decreased atherosclerosis, enhanced glycolysis, and oxygen release, that confers resilience to the development of CVD. In addition, clinical risk factors in plasma were significantly decreased in monks compared with controls, including total cholesterol, LDL-C, Apo B, and Lp(a). INTERPRETATION: To our knowledge, this work is the first well-controlled proteomics investigation of long-term meditation, which opens up a window for individuals characterized by a sedentary lifestyle to improve their cardiovascular health with an accessible method practised for more than two millennia. FUNDING: See the Acknowledgements section.


Asunto(s)
Enfermedades Cardiovasculares , Sistema Cardiovascular , Meditación , Monjes , Apolipoproteínas B , Encéfalo , Enfermedades Cardiovasculares/etiología , Enfermedades Cardiovasculares/prevención & control , LDL-Colesterol , Humanos , Proteoma , Proteómica , Tibet
11.
J Control Release ; 341: 383-398, 2022 01.
Artículo en Inglés | MEDLINE | ID: mdl-34863841

RESUMEN

Tumor-associated macrophages (TAMs), the main components of infiltrating leukocytes in tumors, often play a key role in promoting cancer development and progression. The tumor-specific microenvironment forces the phenotype of tumor-infiltrating to evolve in a direction favorable to tumor development, that is, the generation of M2-like TAMs. Consequently, the dual intervention of cancer cells and tumor microenvironment has become a research hotspot in the field of tumor immunotherapy. In this contribution, we developed pH-sensitive mesoporous calcium silicate nanocomposites (MCNs) encapsulated with indocyanine green (ICG) to enable the effective combination of photothermal therapy (PTT) and photodynamic therapy (PDT) triggered by the 808 nm near-infrared (NIR) light. The mannose and hyaluronic acid-grafted MCNs specifically targeted TAMs and tumor cells and promoted cell apoptosis both in vitro and in vivo. This paper revealed that irradiation of ICG loaded MCNs with NIR can produce a potent hyperthermia and induce abundant intracellular singlet oxygen generation in the target cells. These results suggest that the novel nanoplatform is believed to facilitate the delivery of chemotherapeutic agents to the tumor microenvironment (TME) to enhance the effects of tumor treatment.


Asunto(s)
Hipertermia Inducida , Nanocompuestos , Fotoquimioterapia , Verde de Indocianina/uso terapéutico , Nanocompuestos/uso terapéutico , Nanomedicina Teranóstica/métodos
12.
Chem Biodivers ; 18(12): e2100701, 2021 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-34622554

RESUMEN

The chemical profile and allelopathic action of the volatiles produced by Artemisia selengensis were studied. Artemisia selengensis was found to release volatile chemicals to the environment to influence other plants' growth, which suppressed the root length of Amaranthus retroflexus and Poa annua by 50.46 % and 87.83 % under 80 g/1.5 L treatment, respectively. GC/MS analysis led to the identification of 41 compounds (by hydrodistillation, HD) and 48 compounds (by headspace solid-phase microextraction, HS-SPME), with eucalyptol (15.45 % by HD and 28.09 % by HS-SPME) being detected as the most abundant constituent. The essential oil (EO) of A. selengensis completely inhibited the seed germination of A. retroflexus and P. annua at 1 mg/mL and 0.5 mg/mL, respectively. However, eucalyptol displayed much weaker activity compared with the EO, indicating that other less abundant constituents might contribute significantly to the EO's activity. Our study is the first report on the phytotoxicity of A. selengensis EO, suggesting that A. selengensis might release allelopathic volatile agents into the environment that negatively affect other plants' development so as to facilitate its own dominance; the potential value of utilizing A. selengensis EO as an environmentally friendly herbicide is also discussed.


Asunto(s)
Amaranthus/efectos de los fármacos , Artemisia/química , Desarrollo de la Planta/efectos de los fármacos , Raíces de Plantas/efectos de los fármacos , Poa/efectos de los fármacos , Compuestos Orgánicos Volátiles/farmacología , Amaranthus/crecimiento & desarrollo , Poa/crecimiento & desarrollo , Compuestos Orgánicos Volátiles/química , Compuestos Orgánicos Volátiles/aislamiento & purificación
13.
Fitoterapia ; 148: 104800, 2021 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-33307175

RESUMEN

This report illustrated isolation and identification of 42 compounds comprising five (spicatainoids A-E) undescribed eremophilanolide type sesquiterpenoids and one undescribed nor-eremophilane (spicatainoid F) from Ligularia subspicata.. Among all the isolated new compounds, 4 is reported as the first enantiomeric form of novel eremophilanolide type sesquiterpenoid. Comprehensive analysis of HRESIMS, 1D/2D NMR, experimental circular dichroism (CD), calculated ECD analysis, and X-ray crystallographic (XRD) analysis validated the complete configuration and confirmation of these isolated compounds. All the isolated compounds were tested for the anti-inflammatory potential by measuring the amount of nitric oxide production. Among the tested compounds, 4 was the most effective with 90% NO-inhibition activity. Compounds 1, 2, 3, 9, 10 18, 29, 34, 35 exhibited moderate inhibitory effects against the production of NO, while other compounds displayed no activity even at the concentration of 50 µM. Additionally, compounds 1, 3 and 4 presented moderate anti-inflammatory activity by inhibiting the release of pro-inflammatory cytokines (TNF-α, IL-1ß, and IL-6) in LPS-stimulated N9 cells. The IC50 values of compounds 1, 3 and 4 were calculated 39.6 ± 2.7, 42.5 ± 3.8 and 27.60 ± 1.9 µΜ.


Asunto(s)
Antiinflamatorios/farmacología , Ligularia/química , Sesquiterpenos Policíclicos/farmacología , Sesquiterpenos/farmacología , Animales , Antiinflamatorios/aislamiento & purificación , Línea Celular , China , Citocinas/metabolismo , Ratones , Estructura Molecular , Óxido Nítrico/metabolismo , Fitoquímicos/aislamiento & purificación , Fitoquímicos/farmacología , Sesquiterpenos Policíclicos/aislamiento & purificación , Sesquiterpenos/aislamiento & purificación
14.
J Cosmet Dermatol ; 20(7): 2119-2124, 2021 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-33185305

RESUMEN

AIMS: To introduce the treatment experience of fractional CO2 laser for cesarean scar under the guidance of multiple evaluation methods. METHODS: Cesarean scar patients receiving fractional CO2 laser therapy between January 2016 and January 2020 were retrospectively analyzed in this study. The demographic characteristics and treatment protocols, the Vancouver Scar Scale (VSS), the University of North Carolina "4P" Scar Scale (UNC4P), and the Antera3D score of all the enrolled patients were recorded. RESULTS: Altogether, 79 cesarean scar patients were involved in this study, with the average age of 28.1 years, the average scar age and length of 26.5 (range, 24-30) months and 8.5 (range, 7-11) cm, respectively. Significant improvements were observed in VSS (t = 16.75, P < .05), UNC4P (t = 15.63, P < .05), and Antera3D score (color:t = 13.19, P < .05; texture: t = 13.12, P < .05; melanin: t = 3.89, P < .05; hemoglobin: t = 2.28, P < .05). No long-term complication was reported during the follow-up visits. CONCLUSIONS: Fractional CO2 laser therapy is an effective treatment for cesarean scar. The multiple evaluation methods, including the combined application of VSS, UNC4P, and Antera3D score, can be potentially used for guiding treatment protocols and evaluating efficacy. Meanwhile, rhGM-CSF hydrogel provides another choice for laser wound management.


Asunto(s)
Terapia por Láser , Láseres de Gas , Terapia por Luz de Baja Intensidad , Adulto , Dióxido de Carbono , Cicatriz/etiología , Cicatriz/cirugía , Humanos , Láseres de Gas/uso terapéutico , Estudios Retrospectivos , Resultado del Tratamiento
15.
Int J Nanomedicine ; 15: 7297-7314, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-33061382

RESUMEN

BACKGROUND: PEI is currently the most used non-viral gene carrier and the transfection efficiency is closely related to the molecular weight; however, the prominent problem is that the cytotoxicity increased with the molecular weight. METHODS: A novel redox responsive biodegradable diselenide cross-linked polymer (dPSP) was designed to enhance gene expression. ICG-pEGFP-TRAIL/dPSP nanoparticles with high drug loading are prepared, which have redox sensitivity and plasmid protection. The transfection efficiency of dPSP nanoparticle was evaluated in vitro. RESULTS: The plasmid was compressed by 100% at the N/P ratio of 16, and the particle size was less than 100 nm. When explored onto high concentrations of GSH/H2O2, dPSP4 degraded into small molecular weight cationic substances with low cytotoxicity rapidly. Singlet oxygen (1O2) was produced when indocyanine green (ICG) was irradiated by near-infrared laser irradiation (NIR) to promote oxidative degradation of dPSP4 nanoparticles. Under the stimulation of NIR 808 and redox agent, the particle size and PDI of ICG-pDNA/dPSP nanoparticle increased significantly. CONCLUSION: Compared with gene therapy alone, co-transportation of dPSP4 nanoparticle with ICG and pEGFP-TRAIL had better antitumor effect. Diselenide-crosslinked polyspermine had a promising prospect on gene delivery and preparation of multifunctional anti-tumor carrier.


Asunto(s)
Expresión Génica/efectos de los fármacos , Técnicas de Transferencia de Gen , Nanopartículas/química , Polímeros/química , Animales , Reactivos de Enlaces Cruzados/química , Glutatión/química , Hemólisis/efectos de los fármacos , Peróxido de Hidrógeno/química , Verde de Indocianina/química , Rayos Infrarrojos , Ratones , Peso Molecular , Células 3T3 NIH , Nanopartículas/uso terapéutico , Oxidación-Reducción , Tamaño de la Partícula , Fototerapia/métodos , Plásmidos , Polímeros/síntesis química , Oxígeno Singlete/química , Espectroscopía Infrarroja por Transformada de Fourier , Espermina/química , Transfección
16.
Plant J ; 103(4): 1433-1445, 2020 08.
Artículo en Inglés | MEDLINE | ID: mdl-32391580

RESUMEN

The Ptr1 (Pseudomonas tomato race 1) locus in Solanum lycopersicoides confers resistance to strains of Pseudomonas syringae pv. tomato expressing AvrRpt2 and Ralstonia pseudosolanacearum expressing RipBN. Here we describe the identification and phylogenetic analysis of the Ptr1 gene. A single recombinant among 585 F2 plants segregating for the Ptr1 locus was discovered that narrowed the Ptr1 candidates to eight nucleotide-binding leucine-rich repeat protein (NLR)-encoding genes. From analysis of the gene models in the S. lycopersicoides genome sequence and RNA-Seq data, two of the eight genes emerged as the strongest candidates for Ptr1. One of these two candidates was found to encode Ptr1 based on its ability to mediate recognition of AvrRpt2 and RipBN when it was transiently expressed with these effectors in leaves of Nicotiana glutinosa. The ortholog of Ptr1 in tomato and in Solanum pennellii is a pseudogene. However, a functional Ptr1 ortholog exists in Nicotiana benthamiana and potato, and both mediate recognition of AvrRpt2 and RipBN. In apple and Arabidopsis, recognition of AvrRpt2 is mediated by the Mr5 and RPS2 proteins, respectively. Phylogenetic analysis places Ptr1 in a distinct clade compared with Mr5 and RPS2, and it therefore appears to have arisen by convergent evolution for recognition of AvrRpt2.


Asunto(s)
Proteínas Bacterianas/metabolismo , Resistencia a la Enfermedad/genética , Proteínas de Transporte de Membrana/genética , Proteínas de Plantas/genética , Solanaceae/genética , Solanum/genética , Evolución Molecular , Solanum lycopersicum/genética , Proteínas de Transporte de Membrana/fisiología , Filogenia , Hojas de la Planta/metabolismo , Proteínas de Plantas/fisiología , Seudogenes/genética , Seudogenes/fisiología , Ralstonia/genética , Solanaceae/fisiología , Solanum tuberosum/genética , Nicotiana/genética
18.
Plant J ; 102(5): 931-947, 2020 06.
Artículo en Inglés | MEDLINE | ID: mdl-31908046

RESUMEN

Phytohormone brassinosteroids (BRs) are essential for plant growth and development, but the mechanisms of BR-mediated pollen development remain largely unknown. In this study, we show that pollen viability, pollen germination and seed number decreased in the BR-deficient mutant d^im , which has a lesion in the BR biosynthetic gene DWARF (DWF), and in the bzr1 mutant, which is deficient in BR signaling regulator BRASSINAZOLE RESISTANT 1 (BZR1), compared with those in wild-type plants, whereas plants overexpressing DWF or BZR1 exhibited the opposite effects. Loss or gain of function in the DWF or BZR1 genes altered the timing of reactive oxygen species (ROS) production and programmed cell death (PCD) in tapetal cells, resulting in delayed or premature tapetal degeneration, respectively. Further analysis revealed that BZR1 could directly bind to the promoter of RESPIRATORY BURST OXIDASE HOMOLOG 1 (RBOH1), and that RBOH1-mediated ROS promote pollen and seed development by triggering PCD and tapetal cell degradation. In contrast, the suppression of RBOH1 compromised BR signaling-mediated ROS production and pollen development. These findings provide strong evidence that BZR1-dependent ROS production plays a critical role in the BR-mediated regulation of tapetal cell degeneration and pollen development in Solanum lycopersicum (tomato) plants.


Asunto(s)
Polen/metabolismo , Especies Reactivas de Oxígeno/metabolismo , Solanum lycopersicum/metabolismo , Apoptosis/genética , Apoptosis/fisiología , Brasinoesteroides/metabolismo , Regulación de la Expresión Génica de las Plantas/genética , Regulación de la Expresión Génica de las Plantas/fisiología , Solanum lycopersicum/fisiología , Proteínas de Plantas/genética , Proteínas de Plantas/metabolismo , Polen/fisiología , Transducción de Señal/genética , Transducción de Señal/fisiología
19.
J Cardiothorac Vasc Anesth ; 34(1): 219-234, 2020 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-31072705

RESUMEN

OBJECTIVE: The choice of anesthetic technique in carotid endarterectomy (CEA) has been controversial. This study compared the outcomes of general anesthesia (GA) and local anesthesia (LA) in CEA. DESIGN: Systematic review and meta-analysis of comparative studies. SETTING: Hospitals. PARTICIPANTS: Adult patients undergoing CEA with either LA or GA. INTERVENTIONS: The effects of GA and LA on CEA outcomes were compared. MEASUREMENTS AND MAIN RESULTS: PubMed, OVID, Scopus, and Embase were searched to June 2018. Thirty-one studies with 152,376 patients were analyzed. A random effect model was used, and heterogeneity was assessed with the I2 and chi-square tests. LA was associated with shorter surgical time (weighted mean difference -9.15 min [-15.55 to -2.75]; p = 0.005) and less stroke (odds ratio [OR] 0.76 [0.62-0.92]; p = 0.006), cardiac complications (OR 0.59 [0.47-0.73]; p < 0.00001), and in-hospital mortality (OR 0.72 [0.59-0.90]; p = 0.003). Transient neurologic deficit rates were similar (OR 0.69 [0.46-1.04]; p = 0.07). Heterogeneity was significant for surgical time (I2 = 0.99, chi-square = 1,336.04; p < 0.00001), transient neurologic deficit (I2 = 0.41, chi-square = 28.81; p = 0.04), and cardiac complications (I2 = 0.42, chi-square = 43.32; p = 0.01) but not for stroke (I2 = 0.22, chi-square = 30.72; p = 0.16) and mortality (I2 = 0.00, chi-square = 21.69; p = 0.65). Randomized controlled trial subgroup analysis was performed, and all the aforementioned variables were not significantly different or heterogenous. CONCLUSION: The results from this study showed no inferiority of using LA to GA in patients undergoing CEA. Future investigations should be reported more systematically, preferably with randomization or propensity-matched analysis, and thus registries will facilitate investigation of this subject. Anesthetic choice in CEA should be individualized and encouraged where applicable.


Asunto(s)
Estenosis Carotídea , Endarterectomía Carotidea , Accidente Cerebrovascular , Adulto , Anestesia General , Anestesia Local , Estenosis Carotídea/cirugía , Endarterectomía Carotidea/efectos adversos , Humanos , Factores de Riesgo , Resultado del Tratamiento
20.
J Burn Care Res ; 41(1): 184-189, 2020 01 30.
Artículo en Inglés | MEDLINE | ID: mdl-31504630

RESUMEN

The purpose of this paper was to analyze the characteristics of burns caused by moxibustion. A retrospective survey of the medical records of patients was performed on patients who visited our center from January 2009 to January 2017, treating for burns caused by moxibustion. Data were extracted and evaluated, including demographics, site and extent of burns, type and treatment duration of moxibustion, practitioners, and cost. A total of 82 consecutive patients treated for moxibustion-induced burns were included. The average patient age was 42.4 years, with the male to female ratio of 1.2:1. Burns caused by direct and indirect moxibustion were 7 and 75 cases, respectively. Averagely, moxibustion was performed 3.6 times a week for 3.7 weeks and lasts for 16.2 minutes each treatment. The average distance for indirect moxibustion was 3.4 cm (ranged from 2 to 5 cm) away from the acupoints. First-degree and superficial partial thickness burns, deep partial thickness burns, and full thickness burns were present in 16, 59, and 7 cases, respectively. Most of the burns were minor burns, with diameter less than 2 cm (69 cases). The most common sites were the lower extremities (46 cases), followed by abdomen (29 cases) and upper extremities (5 cases). The average cost for inpatients and outpatients was 5 164 and 2 192 RMB, respectively. Majority of moxibustion-induced burns are minor burns, and there is a high probability of the burn being deep if it occurs in the lower extremities.


Asunto(s)
Quemaduras/epidemiología , Quemaduras/terapia , Moxibustión/efectos adversos , Adulto , Distribución por Edad , Anciano , Unidades de Quemados , Quemaduras/patología , China , Femenino , Humanos , Incidencia , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Distribución por Sexo , Factores de Tiempo , Adulto Joven
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