132 research outputs found
Table_2_Prognosis of resectable colorectal liver metastases after surgery associated with pathological features of primary tumor.docx
BackgroundSurgery is an important means for patients with colorectal liver metastases (CRLM) to improve their long-term survival, and accurate screening of high-risk factors is crucial to guiding postoperative monitoring and treatment. With this in mind, the aim of this study was to investigate the expression levels and prognostic roles of Mismatch Repair (MMR), Ki67, and Lymphovascular invasion(LVI) in the tumor tissues of colorectal of CRLM.Methods85 Patients with CRLM who received surgical treatment for liver metastases after colorectal cancer resection from June, 2017 and Jan, 2020 were included in this study. Independent risk factors affecting the survival of patients with CRLM were investigated using a Cox regression model and the Kaplan-Meier method, and a nomogram for predicting the OS of patients with CRLM was established according to a Cox multivariate regression model. Calibration plots and Kaplan-Meier curves were used to assess the performance of the nomogram.ResultsThe median survival time was 39 months (95% CI: 32.05-45.950), and MMR, Ki67 and LVI were significantly correlated with prognosis. Univariate analysis indicated that larger metastasis size (p=0.028), more than one liver metastases (p=0.001),higher serum CA199 (pConclusionThis study showed that MMR, Ki67, and Lymphovascular invasion were independent risk factors for the postoperative survival of CRLM patients, and a nomogram model was constructed to predict the OS of these patients after liver metastasis surgery. These results can help surgeons and patients to develop more accurate and individualized follow-up strategies and treatment plans after this surgery.</p
Predicting Solvent Effects on S<sub>N</sub>2 Reaction Rates: Comparison of QM/MM, Implicit, and MM Explicit Solvent Models
Solvents are one of the key variables in the optimization
of a
synthesis yield or properties of a synthesis product. In this paper,
contemporary solvent models are applied to predict the rates of SN2 reactions in a range of aqueous and non-aqueous solvents.
High-level CCSD(T)/CBS//M06-2X/6-31+G(d) gas phase energies were combined
with solvation free energies from SMD, SM12, and ADF-COSMO-RS continuum
solvent models, as well as molecular mechanics (MM) explicit solvent
models with different atomic charge schemes to predict the rate constants
of three SN2 reactions in eight protic and aprotic solvents.
It is revealed that the prediction of rate constants in organic solvents
is not necessarily less challenging than in water and popular solvent
models struggle to predict their rate constants to within 3 log units
of experimental values. Among the continuum solvent models, the ADF-COSMO-RS
model performed the best in predicting absolute rate contants while
the SM12 model was best at predicting relative rate constants with
an average accuracy of about 1.5 and 0.8 log units, respectively.
The use of computationally more demanding MM explicit solvent models
did not translate to improvements in absolute rate constants but was
quite effective at predicting relative rate constants due to systematic
error cancellation. Free energy barriers obtained from umbrella sampling
with explicit solvent QM/MM simulations led to excellent agreement
with experimental values, provided that a validated level of theory
is used to treat the QM region
From Spirolactam Mixtures to Regioisomerically Pure 5- and 6-Rhodamines: A Chemodosimeter-Inspired Strategy
Inspired by the ring-open reaction of rhodamine spriolactams as typical chemodosimeters, a general strategy is proposed to conveniently and efficiently synthesize isomerically pure 5- and 6-R-tetramethylrhodamine on a larger scale
Table_3_Prognosis of resectable colorectal liver metastases after surgery associated with pathological features of primary tumor.docx
BackgroundSurgery is an important means for patients with colorectal liver metastases (CRLM) to improve their long-term survival, and accurate screening of high-risk factors is crucial to guiding postoperative monitoring and treatment. With this in mind, the aim of this study was to investigate the expression levels and prognostic roles of Mismatch Repair (MMR), Ki67, and Lymphovascular invasion(LVI) in the tumor tissues of colorectal of CRLM.Methods85 Patients with CRLM who received surgical treatment for liver metastases after colorectal cancer resection from June, 2017 and Jan, 2020 were included in this study. Independent risk factors affecting the survival of patients with CRLM were investigated using a Cox regression model and the Kaplan-Meier method, and a nomogram for predicting the OS of patients with CRLM was established according to a Cox multivariate regression model. Calibration plots and Kaplan-Meier curves were used to assess the performance of the nomogram.ResultsThe median survival time was 39 months (95% CI: 32.05-45.950), and MMR, Ki67 and LVI were significantly correlated with prognosis. Univariate analysis indicated that larger metastasis size (p=0.028), more than one liver metastases (p=0.001),higher serum CA199 (pConclusionThis study showed that MMR, Ki67, and Lymphovascular invasion were independent risk factors for the postoperative survival of CRLM patients, and a nomogram model was constructed to predict the OS of these patients after liver metastasis surgery. These results can help surgeons and patients to develop more accurate and individualized follow-up strategies and treatment plans after this surgery.</p
Table_1_Prognosis of resectable colorectal liver metastases after surgery associated with pathological features of primary tumor.docx
BackgroundSurgery is an important means for patients with colorectal liver metastases (CRLM) to improve their long-term survival, and accurate screening of high-risk factors is crucial to guiding postoperative monitoring and treatment. With this in mind, the aim of this study was to investigate the expression levels and prognostic roles of Mismatch Repair (MMR), Ki67, and Lymphovascular invasion(LVI) in the tumor tissues of colorectal of CRLM.Methods85 Patients with CRLM who received surgical treatment for liver metastases after colorectal cancer resection from June, 2017 and Jan, 2020 were included in this study. Independent risk factors affecting the survival of patients with CRLM were investigated using a Cox regression model and the Kaplan-Meier method, and a nomogram for predicting the OS of patients with CRLM was established according to a Cox multivariate regression model. Calibration plots and Kaplan-Meier curves were used to assess the performance of the nomogram.ResultsThe median survival time was 39 months (95% CI: 32.05-45.950), and MMR, Ki67 and LVI were significantly correlated with prognosis. Univariate analysis indicated that larger metastasis size (p=0.028), more than one liver metastases (p=0.001),higher serum CA199 (pConclusionThis study showed that MMR, Ki67, and Lymphovascular invasion were independent risk factors for the postoperative survival of CRLM patients, and a nomogram model was constructed to predict the OS of these patients after liver metastasis surgery. These results can help surgeons and patients to develop more accurate and individualized follow-up strategies and treatment plans after this surgery.</p
Replacing Phenyl Ring with Thiophene: An Approach to Longer Wavelength Aza-dipyrromethene Boron Difluoride (Aza-BODIPY) Dyes
In the orignial 1,3,5,7-tetraphenyl aza-BODIPY, replacing
the phenyl
rings with thiophene achieved significant bathochromic shifts. One
of the target molecules, <b>DPDTAB</b>, emitting strong NIR
fluorescence with a quantum yield of 0.46 in acetonitrile, is a very
competitive NIR fluorophore
Replacing Phenyl Ring with Thiophene: An Approach to Longer Wavelength Aza-dipyrromethene Boron Difluoride (Aza-BODIPY) Dyes
In the orignial 1,3,5,7-tetraphenyl aza-BODIPY, replacing
the phenyl
rings with thiophene achieved significant bathochromic shifts. One
of the target molecules, <b>DPDTAB</b>, emitting strong NIR
fluorescence with a quantum yield of 0.46 in acetonitrile, is a very
competitive NIR fluorophore
A Lysosome-Targetable and Two-Photon Fluorescent Probe for Monitoring Endogenous and Exogenous Nitric Oxide in Living Cells
A lysosome-specific and two-photon fluorescent probe, <b>Lyso-NINO</b>, demonstrates high selectivity and sensitivity toward
NO, lower
cytotoxicity, and perfect lysosomal localization. With the aid of <b>Lyso-NINO</b>, the first capture of NO within lysosomes of macrophage
cells has been achieved using both two-photon fluorescence microscopy
and flow cytometry
Replacing Phenyl Ring with Thiophene: An Approach to Longer Wavelength Aza-dipyrromethene Boron Difluoride (Aza-BODIPY) Dyes
In the orignial 1,3,5,7-tetraphenyl aza-BODIPY, replacing
the phenyl
rings with thiophene achieved significant bathochromic shifts. One
of the target molecules, <b>DPDTAB</b>, emitting strong NIR
fluorescence with a quantum yield of 0.46 in acetonitrile, is a very
competitive NIR fluorophore
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