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1.
BMC Psychiatry ; 23(1): 822, 2023 11 09.
Artículo en Inglés | MEDLINE | ID: mdl-37946206

RESUMEN

Schizophrenia (SCZ) is a chronic, highly relapsing, severe mental disorder with an unclear etiology. Cytokine-mediated neuroimmune abnormalities have been repeatedly revealed. IL-1ß was reported to play a vital role in expanding the inflammatory response. However, the underlying molecular mechanism is poorly understood. In this study, we found that miR-3653-3p with the NLRP3 binding site in Targetscan was differentially expressed in miRNA high-throughput sequencing in schizophrenia (SCZ), and indeed, its downregulation in SCZ peripheral blood was also verified by RT-qPCR (P-value = 0.015). Furthermore, we found that the mRNAs of caspase 1 and IL-1ß are elevated in people who suffer from SCZ (P = 0.044 and P = 0.001, respectively). Moreover, the interaction of NLRP3, Caspase1, and IL-1ß was found in the peripheral blood of patients with SCZ. The expression level of miR-3653-3p was negatively correlated with NLRP3 and IL-1ß mRNA contents (r = 0.487, P = 0.04 and r = 0.508, P = 0.037, respectively). NLRP3 mRNA was positively correlated with caspase1 mRNA. Meanwhile, the expression of miR-3653-3p was also negatively correlated with negative symptom subscores of PANSS (r = 0.450, P = 0.046). IL-1ß mRNA is positively correlated with the total scores of PANSS (r = 0.690, P = 0.002) and the sub-scores of general psychopathology of PANSS (r = 0.583, P = 0.014). Additionally, a significant positive relationship exists between IL-1ß and the total duration (r = 0.638, P = 0.006). We found that the combination of miR-3653-3p, caspase 1, and IL-1ß have better diagnostic values. The results indicate that miR-3653-3p, caspase 1, and IL-1ß can potentially be biomarkers of SCZ, identifying negative symptoms or a chronic course. A further understanding of the involvement of IL-1ß in SCZ may be a crucial molecular effector for the chronic course to intervene.


Asunto(s)
MicroARNs , Esquizofrenia , Humanos , Caspasa 1/genética , Caspasa 1/metabolismo , Interleucina-1beta/genética , MicroARNs/genética , Proteína con Dominio Pirina 3 de la Familia NLR/genética , Proteína con Dominio Pirina 3 de la Familia NLR/metabolismo , ARN Mensajero , Esquizofrenia/diagnóstico , Esquizofrenia/genética
2.
Zhonghua Nan Ke Xue ; 29(12): 963-972, 2023 Dec.
Artículo en Zh | MEDLINE | ID: mdl-38639947

RESUMEN

OBJECTIVE: Explore the effects of Astragaloside IV and Scorpion Venom Peptide on the activity, migration, apoptosis, cell cycle, autophagy, and the expression of proteins related to the PI3K/AKT signaling pathway in prostate cancer cells. METHODS: The human prostate cancer cell lines LNCaP and PC-3 were randomly divided into blank control group, Astragaloside IV group, Scorpion Venom Peptide group, Astragaloside IV-Scorpion Venom Peptide group, and rapamycin (positive drug group). After corresponding drug treatments for 24 hours, logarithmic growth phase tumor cells were collected for testing. Cell proliferation was assessed using a Cell Counting Kit-8 (CCK-8) assay, Transwell assay, apoptosis assay, cell cycle assay, and immunofluorescence analysis were performed to detect the activity and migration capacity of prostate cancer cells in each group, as well as their effects on apoptosis, cell cycle, and the autophagy target LC3. Western blot analysis was employed to measure the protein expression levels of p-PI3K, p-Akt, p-mTOR, Beclin1, LC3, and P62. RESULTS: Compared to the blank control group, the Astragaloside IV-Scorpion Venom Peptide group exhibited a significant decrease in the activity of prostate cancer cells (P<0.05) and a reduction in the cell invasion ability (migration capacity) (P<0.05). The early apoptosis rate (LR), late apoptosis rate (UR), and total apoptosis rate all increased (P<0.05). The proportion of cells in the G1 phase increased (P<0.05), while the proportion in the G2+S phase decreased (P<0.05). The immunofluorescence expression of LC3 significantly increased (P<0.05). The expression of LC3Ⅱ and Beclin1 proteins in prostate cancer cells LNCaP and PC-3 was upregulated (P<0.05), while the expression of P62, p-PI3K, p-AKT, and p-mTOR proteins was downregulated (P<0.05).Astragaloside IV-Scorpion Venom Peptide is superior to the Astragaloside IV group or Scorpion Venom Peptide group alone in inhibiting the activity and migration capacity of prostate cancer cells, suppressing cell mitosis, promoting early apoptosis, upregulating the expression level of LC3, and inhibiting the PI3K/AKT pathway while promoting autophagy (P<0.05). CONCLUSION: The mechanism by which Astragaloside IV-Scorpion Venom Peptide inhibits the proliferation and migration of prostate cancer cells, suppresses cell mitosis, promotes early apoptosis, and enhances autophagy may be related to the inhibition of the PI3K/AKT pathway.


Asunto(s)
Neoplasias de la Próstata , Saponinas , Venenos de Escorpión , Triterpenos , Humanos , Masculino , Apoptosis , Autofagia , Beclina-1/metabolismo , Línea Celular Tumoral , Proliferación Celular , Fosfatidilinositol 3-Quinasas/metabolismo , Proteínas Proto-Oncogénicas c-akt/metabolismo , Saponinas/farmacología , Venenos de Escorpión/farmacología , Transducción de Señal , Serina-Treonina Quinasas TOR/metabolismo , Triterpenos/farmacología
3.
Zhonghua Nan Ke Xue ; 28(7): 622-627, 2022 Jul.
Artículo en Zh | MEDLINE | ID: mdl-37556221

RESUMEN

OBJECTIVE: To investigate the therapeutic effect of magnetic resonance and magnetoelectric therapy (MRMT) combined with oral Danhong Tongjing Prescription (DTP) on chronic prostatitis / chronic pelvic pain syndrome (CP/CPPS) and the changes in the levels of cytokine-secretory IgA (sIgA), vascular cell adhesion molecule-1 (VCAM-1) and interleukin-8 (IL-8) after treatment. METHODS: Totally 200 patients with CP/CPPS of the qi stagnation and blood stasis type were randomly divided into three groups to receive MRMT + DTP (n = 68), MRMT (n = 67) and DTP (n = 65), respectively, all for 12 weeks. After treatment, we compared the total effectiveness rate, patients' scores on NIH-CPSI and traditional Chinese medicine (TCM) syndrome, and the expressions of sIgA, VCAM-1 and IL-8 in the EPS among the three groups of the patients. RESULTS: After treatment, the patients in the MRMT + DTP group, compared with those in the MRMT and DTP groups, showed a significantly higher total effectiveness rate (86.76% vs 79.10% and 78.46%, P < 0.05 and P < 0.01) and lower scores on pain or discomfort (4.61 ± 2.37 vs 5.86 ± 3.26 and 6.94 ± 2.25 P < 0.01), abnormal urination symptoms (2.98 ± 1.75 vs 3.85 ± 2.01 and 3.94 ± 1.95) and quality of life (3.26 ± 1.87 vs 4.54 ± 2.13 and 4.69 ± 1.72). There were statistically significant differences in the total NIH-CPSI scores among the three groups (10.64 ± 5.91 vs 4.59 ± 6.87 vs 15.54 ± 5.76, P < 0.05). The MRMT + DTP group also exhibited a remarkably lower TCM syndrome score than the MRMT and DTP groups (5.56 ± 3.42 vs 7.37 ± 4.57 and 8.16 ± 3.65, P < 0.05). Compared with the baseline, the expressions sIgA, VCAM-1 and IL8 were all markedly decreased after treatment in the MRMT + DTP (Z = -7.170, Z = -7.182, Z = -7.18), MRMT (Z = -6.802, Z = -6.973, Z = -6.768) and DTP groups (Z = -5.963, Z = -6.990 Z = -5.618) (P < 0.05), even more significantly in the former than in the latter two groups (P < 0.05). CONCLUSION: Magnetic resonance and magnetoelectric therapy combined with Danhong Tongjing Prescription has a good therapeutic effect on CP/CPPS of the qi stagnation and blood stasis type, probably by regulating sIgA, VCAM-1, IL-8 and other cytokines, activating the function of the immune system, inhibiting inflammation, and promoting the absorption of local inflammatory substances.


Asunto(s)
Interleucina-8 , Prostatitis , Masculino , Humanos , Enfermedad Crónica , Molécula 1 de Adhesión Celular Vascular/uso terapéutico , Calidad de Vida , Dolor Pélvico/terapia , Prostatitis/tratamiento farmacológico , Espectroscopía de Resonancia Magnética
4.
J Viral Hepat ; 27(12): 1326-1337, 2020 12.
Artículo en Inglés | MEDLINE | ID: mdl-32741055

RESUMEN

There is a need for an interpretable, accurate and interactions-considered model for predicting hepatitis B surface antigen (HBsAg) seroclearance. We aimed to construct a Bayesian network (BN) model using available medical records to predict HBsAg seroclearance in chronic hepatitis B (CHB) patients, and to evaluate the model's performance. This was a case-control study. A total of 1966 consecutive CHB patients (mean age 39.04 ± 11.23 years) between January 2006 and June 2015 were included. The demographic and clinical characteristics, laboratory data and imaging parameters were obtained and used to build a BN model to estimate the probability of HBsAg seroclearance. Baseline serum HBsAg and hepatitis Be antigen (HBeAg) levels, virological response and HBeAg seroclearance were the most significant predictors of HBsAg seroclearance. The post-test probability table showed that patients with baseline HBsAg concentrations ≤2000 IU/mL, negative baseline HBeAg, an initial virological response and without HBeAg seroclearance (i.e. no recurrence of HBeAg positivity during follow-up) were most likely to have HBsAg seroclearance. The constructed BN model had an area under the receiver operating characteristic curves of 0.896 (95% confidence interval [CI]: 0.892, 0.899), a sensitivity of 0.840 (95% CI: 0.833, 0.846), a specificity of 0.880 (95% CI: 0.876, 0.884) and an accuracy of 0.878 (95% CI: 0.874, 0.882) for predicting HBsAg seroclearance. The established BN model accurately estimated the probability of HBsAg seroclearance and is a promising tool to assist clinical decision-making.


Asunto(s)
Antígenos de Superficie de la Hepatitis B , Hepatitis B Crónica , Adulto , Teorema de Bayes , Estudios de Casos y Controles , Antígenos e de la Hepatitis B , Hepatitis B Crónica/diagnóstico , Humanos
5.
Med Sci Monit ; 26: e922426, 2020 Feb 10.
Artículo en Inglés | MEDLINE | ID: mdl-32038049

RESUMEN

BACKGROUND Schizophrenia is a multigene disease with a complex etiology and different clinical manifestations. It is of great significance to understand the etiology and pathogenesis of schizophrenia patients from different clinical dimensions and to interpret the potential molecular changes of schizophrenia patients from different clinical dimensions. MATERIAL AND METHODS RNA-Seq was performed on peripheral blood leukocytes of 50 patients with schizophrenia and 50 healthy controls. Phenotypic information of patients with schizophrenia was collected during blood sampling. Differentially expressed genes (DEGs) were screened by the edgeR package of R software. To better analyze the correlation between DEG expression values, explore the potential association between differential genes and clinical dimensions of schizophrenia, and identify hub genes, we constructed a DEG co-expression network using weighted gene co-expression network analysis (WGCNA). RESULTS We provide the transcription profiles of peripheral blood leukocytes in patients with schizophrenia and found a gene module (including 89 genes) closely related to the clinical dimension of abnormal psychomotor behavior in schizophrenia. CONCLUSIONS The findings enhance our understanding of the biological processes of schizophrenia, enabling us to identify specific clinical dimensions of genes for diagnosis and prognostic markers and possibly for targeted therapy.


Asunto(s)
Conducta , Leucocitos/metabolismo , Desempeño Psicomotor , RNA-Seq , Esquizofrenia/sangre , Esquizofrenia/genética , Análisis por Conglomerados , Regulación de la Expresión Génica , Ontología de Genes , Redes Reguladoras de Genes , Estudio de Asociación del Genoma Completo , Humanos , Mapas de Interacción de Proteínas/genética , ARN Mensajero/genética , ARN Mensajero/metabolismo
6.
Anal Chem ; 91(8): 5058-5066, 2019 04 16.
Artículo en Inglés | MEDLINE | ID: mdl-30884947

RESUMEN

Recently emerging perovskite quantum dots (PQDs) with several excellent optical properties, such as quantum efficiency, narrow band emission, and tunable emission wavelength, have promising applications in solar cells and light emitting diodes. However, relatively rare applications of PQDs can be found in the field of sensing, mainly due to the very easy degradation of PQDs upon exposure to water or ambient humidity. In this work, for the first time CH3NH3PbBr3 PQDs were encapsulated into superhydrophobic silica aerogels (AGs) to protect PQDs from being degraded by water. The synthesized PQDs@AGs not only maintain the strong fluorescence emission activity of PQDs but also show excellent stability in the presence of water. Additionally, PQDs@AGs have abundant pores making them very suitable for gas sensing. For improving sensing performances, 3D-printing technology is introduced into gas cell design and fabrication for the first time. Finally, a novel, sensitive, selective, and reversible fluorescence sensor for SO2 gas based on the PQDs@AGs functional material and the 3D-printed gas cell has been developed.

7.
Kidney Blood Press Res ; 43(1): 191-205, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-29466800

RESUMEN

BACKGROUND/AIMS: Chronic renal allograft dysfunction (CRAD) is a leading cause of long-term renal allograft loss. Oxidative stress may account for the nonspecific interstitial fibrosis and tubular atrophy that occur in CRAD. An antioxidant intervention via Nrf2 signaling pathway activation might be a promising therapy for some kidney diseases. The present paper investigates whether there is an association between oxidative stress alleviation via sulforaphane-induced Nrf2-HO-1/NQO-1 signaling pathway activation and CRAD improvement. METHODS: F344 rat kidneys were orthotopically transplanted into Lewis rat recipients to establish CRAD models. Sulforaphane was administered at 1.5 mg/kg intraperitoneally once daily. Renal function and 24-hour urinary protein were monitored for variations for 24 weeks after transplantation. After 24 weeks, renal histopathology was evaluated according to the Banff criteria after hematoxylin and eosin, Masson's trichrome and periodic acid-Schiff stainings. Additionally, intrarenal oxidative stress was assessed by the indicators malondialdehyde, 8-isoprostane, oxidized-low density lipoprotein and 8-hydroxy-2'-deoxyguanosine, as well as the activity levels of the antioxidant enzymes total superoxide dismutase, catalase, glutathione peroxidase, glutathione reductase and γ-glutamylcysteine synthetase. Nrf2, HO-1 and NQO-1 expression levels were determined via immunohistochemical and Western blot analyses. RESULTS: The sulforaphane-induced Nrf2-HO-1/NQO-1 signaling pathway activation, as demonstrated by immunohistochemical and Western blot analyses, delayed the progression of serum creatinine and blood urea nitrogen, particularly lowering the 24-hour urinary protein levels of CRAD. The semi-quantified histopathological changes were also alleviated. Evidence of oxidative stress alleviation, as indicated by a concurrent decrease in the indicators and sustained levels of antioxidant enzymes activity, was found in the renal allografts after sulforaphane intervention. CONCLUSION: Oxidative stress alleviation caused by continuous sulforaphane-induced Nrf2-HO-1/NQO-1 signaling pathway activation is associated with functional and morphological improvements of CRAD.


Asunto(s)
Isotiocianatos/farmacología , Trasplante de Riñón/normas , Factor 2 Relacionado con NF-E2/metabolismo , Estrés Oxidativo/efectos de los fármacos , Transducción de Señal/efectos de los fármacos , Aloinjertos , Animales , Hemo Oxigenasa (Desciclizante)/metabolismo , NAD(P)H Deshidrogenasa (Quinona) , Ratas , Ratas Endogámicas F344 , Ratas Endogámicas Lew , Sulfóxidos
8.
Zhongguo Zhong Yao Za Zhi ; 43(19): 3899-3904, 2018 Oct.
Artículo en Zh | MEDLINE | ID: mdl-30453716

RESUMEN

To study the protective effects of Wuzi Yanzong recipe on testis germ cell apoptosis in natural ageing rats through endoplasmic reticulum stress (ERS), 16-month-old male SPF grade SD rats were randomly divided into three groups: ageing model group, and low and high-dose Wuzi Yanzong recipe groups (WZ, 1 and 4 g·kg⁻¹), with 10 rats in each group. In addition, 2-month-old SD male rats were used as adult control group. The ageing model group and the adult control group were fed with normal diet for 4 months. WZ groups were given the medicated feed for 4 months. After fasting for 12 hours, the rats were put to death. Then, the testes were immediately collected. The change of testicular tissue morphology was observed by HE staining. The expression levels of ER stress-related proteins GRP78, p-PERK, p-eif2α, ATF4, p-IRE1, XBP1, ATF6 and apoptosis-related proteins CHOP, caspase12 and p-JNK in testes were detected by Western blot. Compared with the ageing model group, Wuzi Yanzong recipe alleviated the morphological changes of testicular tissue. Western blot results showed that Wuzi Yanzong recipe significantly increased the expression levels of endoplasmic reticulum stress-related proteins GRP78, p-PERK, p-eif2α, ATF4, p-IRE1, XBP1, ATF6 and significantly decreased the expression levels of endoplasmic reticulum-induced apoptosis-related proteins CHOP, caspase 12 and p-JNK. In conclusion, Wuzi Yanzong recipe can alleviate the ageing-related apoptosis of testicular germ cells in natural ageing rats by regulating endoplasmic reticulum stress.


Asunto(s)
Envejecimiento , Apoptosis/efectos de los fármacos , Medicamentos Herbarios Chinos/farmacología , Estrés del Retículo Endoplásmico , Células Germinativas/efectos de los fármacos , Testículo/efectos de los fármacos , Animales , Masculino , Ratas , Ratas Sprague-Dawley
9.
Zhongguo Zhong Yao Za Zhi ; 43(14): 2985-2990, 2018 Jul.
Artículo en Zh | MEDLINE | ID: mdl-30111059

RESUMEN

To study the protective effects of Wuzi Yanzong recipe on DNA oxidative damage of testis germ cells in natural ageing rats based on Nrf2/HO-1 signaling pathway and base excision repair (BER). In the study, 16-month-old SPF grade male SD rats were randomly divided into three groups, namely ageing model group, and low and high-dose Wuzi Yanzong recipe groups (WZ, 1, 4 g·kg⁻¹). In addition, 2-month-old SD rats were used as adult control group (10 rats in each group). The ageing model group and the adult control group were fed with normal diet for 4 months. WZ groups were given medicated feed for 4 months. After fasting for 12 hours, the rats were put to death. Then, the testes were immediately removed. The vitality of superoxide dismutase (SOD) and malondialdehyde (MDA) content in testis were detected by xanthine oxidase method and thiobarbituric acid (TBA) method. The levels of Nrf2 and 8-OHdG were detected by immunofluorescence. The protein expression levels of Nrf2, HO-1, NQO1, APE1, OGG1 and XRCC1 were detected by Western blot. Compared with the ageing model group, WZ significantly increased the SOD vitality and decreased MDA content of testis. In addition, immunofluorescence results showed that WZ significantly attenuated testicular DNA oxidative damage and improved antioxidant capacity. Such changes were accompanied by the down-regulation of DNA oxidative damage response protein 8-OHdG levels and the up-regulation of Nrf2 levels. Moreover, Western blot results showed that WZ significantly increased the protein expression levels of Nrf2, HO-1 and NQO1 of the testis germ cells, when compared with ageing model group. In parallel, the protein expression levels of APE1, OGG1 and XRCC1 were significantly decreased. In conclusion, WZ improves ageing-related DNA oxidative damage via Nrf2/HO-1 and BER pathways.


Asunto(s)
Testículo , Envejecimiento , Animales , ADN , Medicamentos Herbarios Chinos , Masculino , Factor 2 Relacionado con NF-E2 , Estrés Oxidativo , Ratas , Ratas Sprague-Dawley
10.
Am J Ther ; 24(3): e250-e258, 2017 May.
Artículo en Inglés | MEDLINE | ID: mdl-25923228

RESUMEN

The aim of this study was to evaluate the efficacy and safety of entecavir (ETV) combined treatment with adefovir (ADV) on chronic hepatitic B (CHB) patients who failed to respond to nucleotide (acid) analog (NA) treatment. On this basis, the possible factors in the combined treatment of these patients will be analyzed. The safety, biochemical index, and the possible factors that might affect the ETV and ADV combined treatment at different points in time were retrospectively analyzed. The biochemical index included the following: virological response, hepatitis B virus (HBV) DNA decline, primary nonresponse, biochemical response, and the hepatitis B virus E antigen/hepatitis B virus E antibody seroconversion rate. There were 94 CHB patients and compensated liver cirrhosis patients who received ETV plus ADV treatment for over 12 weeks after failure of treatment with NAs. The authors have also investigated 76 CHB patients (80.9%) and 18 hepatitis B cirrhosis patients (19.1%) in this study. The HBV DNA baseline was 4.4 ± 1.4 log10 IU/mL, and the positive rate of HBeAg before salvage treatment was 78.7% (74/94). The sample sizes were 94, 78, 42, 10, 6, and 1 for follow-up of 24, 48, 96, 144, 192, and 240 weeks, respectively. The virological responses (HBV DNA < 2 log10 IU/mL) and biochemical responses were 52.1%, 74.3%, and 90.4% and 63.1%, 61.6%, and 81.1%, respectively, at 24, 48, and 96 weeks, which showed significant differences (P < 0.001 and P < 0.005, respectively). The HBV DNA decline was presented as mean ± SEM, which were 1.53 ± 1.23, 1.75 ± 1.37, 2.07 ± 1.54, and 2.39 ± 1.77 log10 IU/mL at 12, 24, 48, and 96 weeks, respectively. They showed significant differences compared with the baseline (χ = 8.084, P < 0.05). The rate of primary nonresponse was 30.9% (29/94), and the primary treatment failure rates were 26.6% (25/94), 24.4% (19/78), and 4.8% (2/42) at 24, 48, and 96 weeks, respectively. They all have statistical difference (P = 0.011 < 0.05). There were 23 patients who experienced virological breakthrough after the HBV DNA levels were undetectable, whereas after follow-up for 12-24 weeks, the HBV DNA levels were back to undetectable again. ETV plus ADV treatment is an efficient and safe treatment for CHB and compensated liver cirrhosis patients who experienced NA treatment failure. The high quantity of baseline HBV DNA level is a risk factor for poor efficacy of salvage treatment.


Asunto(s)
Adenina/análogos & derivados , Antivirales/administración & dosificación , Guanina/análogos & derivados , Hepatitis B Crónica/tratamiento farmacológico , Organofosfonatos/administración & dosificación , Adenina/administración & dosificación , Adenina/efectos adversos , Adulto , Antivirales/efectos adversos , ADN Viral/sangre , Quimioterapia Combinada , Femenino , Estudios de Seguimiento , Guanina/administración & dosificación , Guanina/efectos adversos , Antígenos e de la Hepatitis B/sangre , Virus de la Hepatitis B/genética , Hepatitis B Crónica/virología , Humanos , Cirrosis Hepática/tratamiento farmacológico , Cirrosis Hepática/virología , Masculino , Persona de Mediana Edad , Organofosfonatos/efectos adversos , Estudios Retrospectivos , Factores de Riesgo , Factores de Tiempo , Resultado del Tratamiento
11.
Anal Chem ; 88(3): 1748-52, 2016 Feb 02.
Artículo en Inglés | MEDLINE | ID: mdl-26744080

RESUMEN

Nitrogen and sulfur codoped carbon-based dots (N,S-CDs) with strong blue light emission are encapsulated into red light-emitting europium metal-organic frameworks (Eu-MOFs) to form two color light-emitting nanohybrids (Eu-MOFs/N,S-CDs). In organic solvents, the encapsulated N,S-CDs are aggregated and confined in the cavities of the Eu-MOFs, exhibiting only a very weak photoluminescence (PL) signal. Therefore, the nanohybrids show red light emission of the Eu-MOFs. Contrarily, when the Eu-MOFs/N,S-CDs are dispersed in water, the encapsulated N,S-CDs are released into solution while the red light emission of the Eu-MOFs is quenched due to the effect of O-H oscillators. The nanohybrids are used as the probe for the water content in organic solvents. Take ethanol as an example; as the water content is increased from 0.2 to 30%, the nanoprobe provides distinguishable PL color change. The ratio of light intensity at 420 nm to that at 623 nm (I420/I623) increases linearly with increasing water content in the range from 0.05 to 4% with a low detection limit of 0.03%.

12.
Chemistry ; 22(47): 16765-16769, 2016 Nov 14.
Artículo en Inglés | MEDLINE | ID: mdl-27643803

RESUMEN

A Ni/BPh3 catalyzed [2+2+2] cycloaddition of alkyne-nitriles with alkynes has been developed, which provides an efficient route to fused pyridines under mild reaction conditions. Mechanistic studies indicate that an azanickelacycle via heterocoupling of an alkyne with a nitrile moiety is possibly formed as a key reaction intermediate. The Lewis acid catalyst is crucial to the successful transformation, which is suggested to promote the oxidative cyclization process.

13.
Chemistry ; 21(51): 18699-705, 2015 Dec 14.
Artículo en Inglés | MEDLINE | ID: mdl-26558737

RESUMEN

The cyano-Schmittel cyclization of in situ-generated cyano-allenes has been carried out. The DFT calculation results suggest that the diradical pathway plays a major role in this cyclization. The reactions can be conveniently performed in a one-pot manner through cascade Sonogashira coupling of terminal cyano-ynes with organic halides, followed by base-promoted propargyl-allenyl isomerization/cyclization, leading to an efficient access to pyridine-fused polycyclic architectures. In particular, a large variety of aryl or heteroaryl rings such as furans, thiophenes and pyridines can be incorporated into the follow-up cyano-Diels-Alder reactions, highlighting the great synthetic utility of this chemistry.

14.
Analyst ; 140(22): 7468-86, 2015 Nov 21.
Artículo en Inglés | MEDLINE | ID: mdl-26396996

RESUMEN

Carbon based dots (CDs) including carbon quantum dots and graphene quantum dots exhibit unique luminescence properties, such as photoluminescence (PL), chemiluminescence (CL) and electrochemiluminescence (ECL). This review summarizes the sensing application of the CDs taking advantage of their luminescence properties. The working principle, merits, and prospects of CD based sensors are presented.

15.
J Transl Med ; 12: 190, 2014 Jul 04.
Artículo en Inglés | MEDLINE | ID: mdl-24996644

RESUMEN

BACKGROUND: As a surface glycoprotein, CD147 is capable of stimulating the production of matrix metalloproteinases (MMPs) from neighboring fibroblasts. The aim of the present study is to explore the role of soluble CD147 on MMPs secretion from hepatocellular carcinoma (HCC) cells, and to investigate the diagnostic value of serum soluble CD147 in the HCC detection. METHODS: We identified the form of soluble CD147 in cell culture supernate of HCC cells and serum of patients with HCC, and explored the role of soluble CD147 on MMPs secretion. Serum CD147 levels were detected by the enzyme-linked immunosorbent assay, and the value of soluble CD147 as a marker in HCC detection was analyzed. RESULTS: Full length soluble CD147 was presented in the culture medium of HCC cells and serum of patients with HCC. The extracellular domain of soluble CD147 promoted the expression of CD147 and MMP-2 from HCC cells. Knockdown of CD147 markedly diminished the up-regulation of CD147 and MMP-2 which induced by soluble CD147. Soluble CD147 activated ERK, FAK, and PI3K/Akt pathways, leading to the up-regulation of MMP-2. The level of soluble CD147 in serum of patients with HCC was significantly elevated compared with healthy individuals (P < 0.001). Soluble CD147 levels were found to be associated with HCC tumor size (P = 0.007) and Child-Pugh grade (P = 0.007). Moreover, soluble CD147 showed a better performance in distinguishing HCC compared with alpha-fetoprotein. CONCLUSIONS: The extracellular domain of soluble CD147 enhances the secretion of MMP-2 from HCC cells, requiring the cooperation of membrane CD147 and activation of ERK, FAK, and PI3K/Akt signaling. The measurement of soluble CD147 may offer a useful approach in diagnosis of HCC.


Asunto(s)
Basigina/metabolismo , Biomarcadores de Tumor/sangre , Carcinoma Hepatocelular/sangre , Carcinoma Hepatocelular/enzimología , Neoplasias Hepáticas/sangre , Neoplasias Hepáticas/enzimología , Metaloproteinasa 2 de la Matriz/metabolismo , Adulto , Anciano , Basigina/sangre , Basigina/química , Carcinoma Hepatocelular/diagnóstico , Carcinoma Hepatocelular/patología , Estudios de Casos y Controles , Línea Celular Tumoral , Membrana Celular/metabolismo , Medios de Cultivo Condicionados/metabolismo , Quinasas MAP Reguladas por Señal Extracelular/metabolismo , Femenino , Proteína-Tirosina Quinasas de Adhesión Focal/metabolismo , Humanos , Neoplasias Hepáticas/diagnóstico , Neoplasias Hepáticas/patología , Masculino , Persona de Mediana Edad , Estadificación de Neoplasias , Fosfatidilinositol 3-Quinasas/metabolismo , Unión Proteica , Estructura Terciaria de Proteína , Proteínas Proto-Oncogénicas c-akt/metabolismo , Curva ROC , Transducción de Señal , Solubilidad , Regulación hacia Arriba , alfa-Fetoproteínas/metabolismo
16.
J Affect Disord ; 350: 974-982, 2024 Apr 01.
Artículo en Inglés | MEDLINE | ID: mdl-38266927

RESUMEN

BACKGROUND: Suicide and self-injury have become increasingly serious public health crises. Yet current evidence about the association between sedentary behavior (SB) and suicide is inconclusive. We explore the relationship between SB and suicide behavior to provide intervention measures to change the risk factors of the latter. METHODS: We searched PubMed, Embase, Cochrane Library, and Web of Science from database inception to September 10, 2023. Adjusted odds ratios (ORs) with 95 % confidence intervals (CIs) were used as effect measures. Subgroup analysis was conducted based on gender, regions and countries, age, and study type. RESULTS: A total of 13 studies were included. According to the meta-analysis of suicide type, compared with individuals without sedentary behavior, individuals with sedentary behavior have a higher risk of suicide attempt (OR = 1.23, 95%CI: 1.15-1.37, p < 0.001), suicide ideation (OR = 1.47, 95%CI:1.28-1.68, p < 0.001) and suicide plan (OR = 1.30, 95%CI:1.16-1.44, p < 0.001). We conducted multiple subgroup analyses for different suicidal behaviors. The analysis found that SB can increase the risk of suicide attempt in different subgroups of different genders, different research centers, Africa, and adolescents; SB can increase the risk of suicide ideation in the subgroups of different genders and ages, different research centers, Asia and Africa; SB can increase the risk of suicide plan in the subgroups of different genders, multi-center study, Africa, and adolescents. LIMITATIONS: Future research should focus on objective SB measurement and explore its dose-response relation and time limit. CONCLUSION: A sedentary lifestyle is associated with suicide behavior risk, with varying effects across age groups and regions, as evidenced in both single-center and multi-center studies.


Asunto(s)
Conducta Sedentaria , Conducta Autodestructiva , Adolescente , Humanos , Masculino , Femenino , Intento de Suicidio , Ideación Suicida , Factores de Riesgo , Estudios Multicéntricos como Asunto
18.
Beilstein J Org Chem ; 9: 621-7, 2013.
Artículo en Inglés | MEDLINE | ID: mdl-23616805

RESUMEN

Low-valency titanium species, generated in situ by using Ti(OiPr)4/2 c-C5H9MgCl reagent, react with imines to give a titanium-imine complex that can couple with terminal alkynes to provide azatitanacyclopentenes with excellent regioselectivity. Stereodefined allylic amines are obtained in good yields after hydrolysis or iodonolysis of the corresponding azatitanacyclopentenes. When ethynylcyclopropane is used as the coupling partner to react with imines in this reaction, the initially generated allylic amine undergoes an unexpected 1,3-amino migration on silica gel during the column chromatography.

19.
Thorac Cancer ; 14(20): 1969-1979, 2023 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-37220935

RESUMEN

BACKGROUND: Circular RNA (circRNA) circ_0072088 has been reported to be associated with NSCLC cell growth, migration, and invasion. However, the role and mechanism of circ_0072088 on NSCLC development have not yet been determined. METHODS: Circ_0072088, microRNA-1225 (miR-1225-5p), and Wilms' tumor (WT1) suppressor gene level was detected by reverse transcription-quantitative polymerase chain reaction (RT-qPCR). Migration, invasion, and apoptosis were detected using transwell and flow cytometry assays. Matrix metallopeptidase 9 (MMP9), hexokinase 2 (HK2), and WT1 were examined using western blot assay. The biological role of circ_0072088 on NSCLC tumor growth was examined by the xenograft tumor model in vivo. Circular RNA Interactome and TargetScan were used to predict the binding between miR-1225-5p and circ_0072088 or WT1, followed by confirmation using a dual-luciferase reporter. RESULTS: Circ_0072088 and WT1 were highly expressed in NSCLC tissues and cells, and miR-1225-5p was decreased. Knockdown of circ_0072088 might repress migration, invasion, and glycolysis, and facilitate apoptosis of NSCLC cells in vitro. Circ_0072088 silencing also blocked NSCLC tumor growth in vivo. Mechanistically, circ_0072088 acted as a sponge of miR-1225-5p to regulate WT1 expression. CONCLUSION: Circ_0072088 knockdown could inhibit cell growth, migration, invasion, and glycolysis partially by regulating the miR-1225-5p/WT1 axis, thus providing a promising therapeutic target for NSCLC treatment.


Asunto(s)
Carcinoma de Pulmón de Células no Pequeñas , Neoplasias Renales , Neoplasias Pulmonares , MicroARNs , Tumor de Wilms , Animales , Humanos , Carcinoma de Pulmón de Células no Pequeñas/genética , ARN Circular/genética , Neoplasias Pulmonares/genética , Proliferación Celular , Modelos Animales de Enfermedad , ARN no Traducido , MicroARNs/genética , Línea Celular Tumoral , Proteínas WT1
20.
Front Psychiatry ; 14: 1126615, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37065902

RESUMEN

Background: Non-suicidal self-injury (NSSI) is self-injurious behavior without suicidal intent commonly seen in the adolescent population and poses a serious threat to the life safety of adolescents. Related researches suggest a possible correlation between addiction and the occurrence of NSSI. This study aimed to explore the correlation between addiction and NSSI from a molecular biological perspective by analyzing the differential expression of addiction-related genes in NSSI patients. Methods: (1) The association between addiction and non-suicidal self-injury in a Chinese adolescent population was verified with the help of questionnaires on substance and non-substance addictions and non-suicidal self-injury among 1,329 adolescents in China, (2) Screening for key genes associated with addiction by bioinformatics analysis, and (3) RT-qPCR experiment was performed to validate key genes and Receiver Operating Characteristic curves were plotted for target genes. Results: (1) Substance and non-substance addictions were all significantly correlated with non-suicidal self-injury, (2) Four target genes: SERPINA3, SLC14A1, RPS6 and RPS3A were screened by bioinformatics technique, and (3) Relative quantitative analysis by RT-qPCR revealed that the expression levels of SLC14A1 (p < 0.01), RPS6 (p < 0.05) and RPS3A (p < 0.01) were significantly higher in NSSI patients than in healthy controls. Conclusion: (1) The significant association between addiction and NSSI exists in the Chinese adolescent population and (2) Addiction-related genes SLC14A1, RPS6, and RPS3A are differentially expressed in adolescents with NSSI. The genes have the potential to become biological markers for the diagnosis of NSSI.

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