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Objective:To explore the predictive value of 18F-FDG PET/CT metabolic parameters combined with inflammatory markers for the medium-term efficacy of chemotherapy in patients with primary gastrointestinal diffuse large B cell lymphoma (PGI-DLBCL). Methods:From April 2011 to May 2020, 67 patients (37 males, 30 females, age: 28-85 years) with PGI-DLBCL examined by 18F-FDG PET/CT before chemotherapy in Changhai Hospital, Navy Medical University were retrospectively analyzed. All patients were treated with cyclophosphamide+ doxorubicin+ vincristine+ prednisone (CHOP) or rituximab+ CHOP (R-CHOP) regimens, and the medium-term efficacy was evaluated after 2-4 cycles of chemotherapy. The effect outcome was divided into complete remission (CR) group and non-CR (NCR) group based on the Lugano lymphoma response evaluation criteria. Mann-Whitney U test was used to compare the differences of SUV max, peak of SUV (SUV peak), metabolic tumor volume (MTV), total lesion glycolysis (TLG), platelet/lymphocyte ratio (PLR) and neutrophil/lymphocyte ratio (NLR) between two groups. The independent risk factors of NCR were analyzed by multivariate logistic regression and the binary logistic regression model was established according to the results. The model was tested with external validation data ( n=15). Results:Of 67 PGI-DLBCL patients, 28(41.8%) were CR and 39(58.2%) were NCR. SUV peak, MTV, TLG, PLR and NLR in NCR group (17.3(12.3, 28.1), 73.8(42.9, 141.7) cm 3, 887.5(300.9, 2 075.3) g, 203.9(155.7, 297.1), 3.9(3.0, 4.9)) were significantly higher than those in CR group (9.5(6.2, 15.2), 11.3(4.7, 23.2) cm 3, 85.2(35.5, 214.6) g, 149.3(102.8, 173.1), 2.2(1.8, 4.6); z values: from -6.41 to -2.33, all P<0.05). The logistic regression model was as follows: P=1/(1+ e - x), x=0.100×MTV+ 0.024×PLR-8.064. The prediction accuracy for NCR risk was 86.57%(58/67), with the accuracy of 13/15 tested by external validation data. Conclusion:MTV combined with PLR has a good predictive value for medium-term efficacy of CHOP/R-CHOP chemotherapy in patients with PGI-DLBCL.
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The present study aimed to unravel the carbon metabolism pathway of Acinetobacter sp. TAC-1, a heterotrophic nitrification-aerobic denitrification (HN-AD) strain that utilizes poly (3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) as a carbon source. Sodium acetate was employed as a control to assess the gene expression of carbon metabolic pathways in the TAC-1 strain. The results of genome sequencing demonstrated that the TAC-1 strain possessed various genes encoding carbon metabolic enzymes, such as gltA, icd, sucAB, acs, and pckA. KEGG pathway database analysis further verified the presence of carbon metabolism pathways, including the glycolytic pathway (EMP), pentose phosphate pathway (PPP), glyoxylate cycle (GAC), and tricarboxylic acid (TCA) cycle in the TAC-1 strain. The differential expression of metabolites derived from distinct carbon sources provided further evidence that the carbon metabolism pathway of TAC-1 utilizing PHBV follows the sequential process of PHBV (via the PPP pathway)→gluconate (via the EMP pathway)→acetyl-CoA (entering the TCA cycle)→CO2+H2O (generating electron donors and releasing energy). This study is expected to furnish a theoretical foundation for the advancement and implementation of novel denitrification processes based on HN-AD and solid carbon sources.
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Ácido 3-Hidroxibutírico , Carbono/metabolismo , Poliésteres , Hidroxibutiratos , Redes e Vias MetabólicasRESUMO
OBJECTIVE To establish the fingerprints of dried Houttuynia cordata and its decoction pieces ，conduct chemometrics analysis and determine the contents of 5 flavonoids such as neochlorogenic acid. METHODS High performance liquid chromatography （HPLC）method was adopted. Using quercitrin as reference ，HPLC fingerprints of 10 batches of dried H. cordata and its decoction pieces were drawn. The similarity evaluation was conducted by Similarity Evaluation System of TCM Chromatographic Fingerprint （2012 edition），the common peaks were also confirmed. SIMCA-P 14.1 software was applied for principal component analysis （PCA）and partial least square-discriminant analysis （PLS-DA），and the variable importance in projection（VIP）value more than 1 was considered as a standard to screen the differential components affecting the quality of these two products ；meanwhile，the contents of 5 components such as neochlorogenic acid in both products were determined by the same HPLC method. RESULTS There were 20 common peaks in 10 batches of dried H. cordata and 10 batches of its decoction pieces with the similarity values more than 0.960. A total of 5 common peaks were identified ，which were neochlorogenic acid （peak 1）， chlorogenic acid （peak 3），cryptochlorogenic acid （peak 4），rutin（peak 7）and quercitrin （peak 11）. The results of PCA and PLS-DA showed that dried H. cordata could be distinguished from its decoction pieces obviously ；the common peaks with VIP value greater than 1 were as follows ：peak 7（rutin），peak 20，peak 5，peak 13，peak 2，peak 18，peak 3（chlorogenic acid ）， peak 14，peak 17 and peak 19. The linear range of neochlorogenic acid ，chlorogenic acid ，cryptochlorogenic acid ，rutin and quercitrin were 3.77-60.29 μg/mL（r＝0.999 7），1.40-22.42 μg/mL（r＝0.999 5），3.76-60.22 μg/mL（r＝0.999 9），2.19-35.06 μg/mL （r＝0.999 9）and 25.49-407.88 μg/mL（r＝0.999 7），respectively. RSDs of precision ，stability（24 h）and reproducibility E-mail：20190394@njucm.edu.cn tests were all lower than 3％. The average recoveries of the above components in these two products were 98.72％-101.12％ and 98.86％ -100.63％ with RSDs less than 3％（n＝9）. In dried H. cordata ，the average contents of 5 components were 0.87，0.33，0.59，0.61 and 6.17 mg/g，while the average contents were 0.42，0.11，0.26，0.23 and 3.16 mg/g in its decoction pieces ，respectively. CONCLUSIONS HPLC fingerprint and the method of content determination are stable and feasible ，which could be used for the quality control of dried H. cordata and its decoction pieces. Besides ，rutin and other components may be the differential components which could affect the quality of these two products ；the average contents of the 5 flavonoids such as neochlorogenic acid in dried H. cordata all decrease after processing.
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We report on two cases of type C insulin resistance syndrome(TCIRS) admitted to the Department of Endocrinology, Peking Union Medical College Hospital from January 2000 to December 2020. Both patients presented with persistent hyperglycemia, low immunoreactive insulin, extreme insulin resistance, high insulin autoantibodies, high total insulin, and large insulin antibody pool. TCIRS is marked by extreme insulin resistance with ketoacidosis and respond to medium to high doses glucocorticoids rather than plasmapheresis.
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Objective:Under the guidance of "Five Elements Construction Model(FECM)" , Chengdu elderly care hospital has conducted the combination model of medical care and elderly care service.Based on the FECM, in the practice of health services for the elderly, Chengdu Elderly Care Hospital has actively explored the training of professional technicians, the creating of an aging patients-caring environment, the taking of effective and scientific measures, the adopting of the advanced theory at home and abroad, the setting up and operating of the specialized wards for the cognitive impairment in the elderly.And the combination model of Medical Care and Elderly Care in our hospital has got obvious achievement and progress.
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Objective To investigate the changes and significance of the serum myeloperoxidase (MPO) and lipoxin (LXA4) in patients with coronary heart disease (CHD). Methods From December 2010 to February 2011,143 patients with CHD (CHD group) and 44 patients without CHD (control group) were selected. The serum high sensitive C-reactive protein (hs-CRP), MPO and LXA4 levels were assessed, and the ratio of MPO and LXA4 (M/L) was calculated. These indexes were compared between 2 groups. The influencing factors of MPO, LXA4 and M/L levels were analyzed by multifactor Logistic regression analysis. Results The serum levels of hs-CRP, LXA4, MPO, and M/L in CHD group were significantly higher than those in control group: 3.25 mg/L vs. 0.99 mg/L, 229.88 ng/L vs. 178.63 ng/L, 422.58 U/L vs. 186.85 U/L and (1.78 ± 0.52) U/ng vs. (1.02 ± 0.17) U/ng, and there were statistical differences (P0.05). MPO was the impact factor for the increase of LXA4 (P0.05). Stable angina, unstable angina and acute myocardial infarction were the impact factors for the elevation of M/L (P0.05). Conclusions The inflammatory response in patients with CHD is accompanied by the presence of inflammation and resolution imbalance.
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Objective To investigate the correlation of uric acid(UA) level and the circadian rhythm of blood pressure in hypertensive patients. Methods Among the individuals who presented to the cardiology clinic, 70 patients who had hypertension and were diagnozed with non- dipper hypertension (non-dipper hypertension group) by 24 h ambulatory blood pressure monitoring (ABPM), 70 patients with dipper hypertension patients (dipper hypertension group), and 52 normotensive individuals (control group) were enrolled in this study. Peripheral venous blood samples were collected from all the patients in order to evaluate the hematological and biochemical parameters. All the assessed parameters were compared among three groups. Results The level of UA in non-dipper hypertension group was the highest, in dipper hypertension group was higher and in contrl group was the lowerst:(393.57 ± 53.52), (280.57 ± 41.64), (267.66 ± 59.38) μmol/L, and there were significant differences (P<0.01). Multivariate Logistic regression analysis revealed that the level of UA was an independent risk factor for non-dipper circadian rhythm of blood pressure (P = 0.003, OR = 2.26, 95% CI: 1.34- 3.89). Conclusions The higher level of UA may be a risk factor for non-dipper circadian rhythm of blood pressure in hypertension patients.
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Objective To preliminarily explore the clinical significance of word recognition scores in evalua_ting the curative effects of sudden hearing loss .Methods Pure tone averages (PTA) and word recognition scores (WRS) in 11 cases of sudden hearing loss were obtained on the pre-treatment day and the post -treatment day , and the results were compared .ResuIts The average PTA of 11 cases was 62 .27 ± 15 .36 dB HL on the pre-treat_ment day ,and 60 .23 ± 14 .32 dB HL on the post -treatment day .The average WRS in 11 cases was 42 .91% ± 30 .83% on the pre-treatment day ,and 72 .73% ± 26 .72% on the post-treatment day .There were no significant differences in PTA and the intensity of the sound for testing WRS before and after treatment(P> 0 .05) ,and the difference of the WRS between the pre -treatment and the post -treatment day was statistically significant(P<0 .05) .ConcIusion The WRS could be used in evaluating the curative effect of sudden hearing loss ,which is a sup_plement for PTA .
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OBJECTIVE@#To investigate the change of serum myeloperoxidase (MPO) and lipoxin A4 (LXA4) in coronary heart disease (CHD) patients with anxiety and depression and its clinical significance.@*METHODS@#From December 2010 to February 2011, 143 CHD patients and 44 non-CHD patients (the control group) hospitalized in the Department of Cardiology at the Second Xiangya Hospital were enrolled. The hospital anxiety and depression scale (HADS) was used to evaluate the psychological state of all patients and the CHD patients were assigned to an anxiety and depression group (n=57) or a non-depression and anxiety group (n=86). The serum levels of high sensitive C-reactive protein (Hs-CRP), MPO, and LXA4 were examined, and the ratio of MPO and LXA4 (M/L) was calculated.@*RESULTS@#The levels of Hs-CRP, MPO, and LXA4 as well as M/L ratios in both CHD groups were significantly higher than those in the control group (all P<0.01). Compared with the non-anxiety and depression group, the levels of MPO and LXA4, and M/L ratios in the anxiety and depression group increased (all P<0.05). Correlation analysis showed that MPO was positively correlated with the score of HADS-total (HADS-t), HADS-anxiety (HADS-a), or HADS-depression (HADS-d), while LXA4 was negatively correlated with HADS-t or HADS-d. Multiple ordinal logistic regression analysis revealed that higher HADS-t score, stable angina, unstable angina, and acute myocardial infarction were the independent impact factors for the elevation of M/L ratio.@*CONCLUSION@#Anxiety and depression may aggravate the inflammatory response in CHD patients. The imbalance between inflammation and anti-inflammation may be part of the mechanism.