Clinical Characteristics and Nomogram Model of Nosocomial Infection in Patients with Newly Diagnosed Multiple Myeloma / 中国实验血液学杂志

OBJECTIVE@#To explore the clinical characteristics of nosocomial infection in newly diagnosed multiple myeloma(NDMM) patients, and establish a predictive nomogram model.@*METHODS@#The clinical data of 164 patients with MM who were treated in Shanxi Bethune Hospital from January 2017 to December 2021 were retrospectively analyzed. The clinical characteristics of infection were analyzed. Infections were grouped as microbiologically defined infections and clinically defined infections. Univariate and multivariate regression models were used to analyze the risk factors of infection. A nomogram was established.@*RESULTS@#164 patients with NDMM were included in this study, and 122 patients (74.4%) were infected. The incidence of clinically defined infection was the highest (89 cases, 73.0%), followed by microbial infection (33 cases, 27.0%). Among 122 cases of infection, 89 cases (73.0%) had CTCAE grade 3 or above. The most common site of infection was lower respiratory in 52 cases (39.4%), upper respiratory tract in 45 cases (34.1%), and urinary system in 13 cases (9.8%). Bacteria(73.1%) were the main pathogens of infection. Univariate analysis showed that ECOG ≥2, ISS stage Ⅲ, C-reactive protein ≥10 mg/L, serum Creatinine ≥177 μmol/L had higher correlation with nosocomial infection in patients with NDMM. Multivariate regression analysis showed that C-reactive protein ≥10 mg/L (P＜0.001), ECOG ≥2 (P=0.011) and ISS stage Ⅲ （P=0.024） were independent risk factors for infection in patients with NDMM. The nomogram model established based on this has good accuracy and discrimination. The C-index of the nomogram was 0.779（95%CI: 0.682-0.875）. Median follow-up time was 17.5 months, the median OS of the two groups was not reached (P=0.285).@*CONCLUSION@#Patients with NDMM are prone to bacterial infection during hospitalization. C-reactive protein ≥10 mg/L, ECOG ≥2 and ISS stage Ⅲ are the risk factors of nosocomial infection in NDMM patients. The nomogram prediction model established based on this has great prediction value.

Application and effect evaluation of group prenatal care model in primiparas / 中国实用护理杂志

Objective:To explore application and effect evaluation of group prenatal care model in primiparas.Methods:A total of primiparas were recruited from December 2019 to May 2020 in the department of Obstetric clinic. Group prenatal care was carried out in the intervention group and the routine nursing was implemented in the control group. Positive capital Questionnaire and pregnancy outcome were used to evaluate the effects of intervention.Results:The scores of pre-intervention, intervention for one month and post-intervention of PPQ was (123.87±18.86), (130.70±13.41) and (142.23±8.37) respectively. Higher level of natural childbirth rate([86.7%] versus [63.3%]; χ2=4.356; P=0.037<0.05) and lower rate of perineal injury([16.7%] versus [43.3%]; χ2=5.079; P=0.024<0.05). The rate of exclusive breastfeeding during hospitalization ([90.0%] versus [66.7%]; χ2=4.812; P=0.028<0.05) after intervention as compared with those who received routine care. Conclusion:Group prenatal care intervention model can improve the level of positive psychological capital and pregnancy outcome.

Analysis of the risk factors of radiation-induced caries in patients with head and neck cancer / 华西口腔医学杂志

OBJECTIVE@#This study aimed to evaluate the risk factors of radiation-induced caries by using a multiple linear regression equation and to provide the basis for the effective prevention of radioactive caries.@*METHODS@#A total of 166 patients with head and neck cancer who underwent radiotherapy were selected as subjects. The number of decayed, missing or filled surfaces were recorded. Questionnaire contents included age, sex, radiation dose, and radiotherapy techniques. Multiple stepwise regression analyses were performed to identify the risk factors of radiation-induced caries.@*RESULTS@#Multiple stepwise regression analyses indicated that the main risk factors of radiation-induced caries were plaque index, radiotherapy techniques, time after radiotherapy, and radiotherapy dose.@*CONCLUSIONS@#The awareness of dental care and caries treatment should be improved to reduce the occurrence of radiation-induced caries in patients with head and neck cancer. In addition, intensity modulated radiation therapy should be employed to decrease the radiation exposure dose received by teeth.

Regulatory Effect of General Anesthetics on Activity of Potassium Channels / 神经科学通报·英文版

General anesthesia is an unconscious state induced by anesthetics for surgery. The molecular targets and cellular mechanisms of general anesthetics in the mammalian nervous system have been investigated during past decades. In recent years, K channels have been identified as important targets of both volatile and intravenous anesthetics. This review covers achievements that have been made both on the regulatory effect of general anesthetics on the activity of K channels and their underlying mechanisms. Advances in research on the modulation of K channels by general anesthetics are summarized and categorized according to four large K channel families based on their amino-acid sequence homology. In addition, research achievements on the roles of K channels in general anesthesia in vivo, especially with regard to studies using mice with K channel knockout, are particularly emphasized.

Evaluation of aorta's compliance after repair of coarctation of aorta using pulse wave velocity of MRI / 实用放射学杂志

Objective To evaluate aorta's compliance after repair of coarctation of the aorta (CoA)using the pulse wave velocity (PWV)of MRI.Methods A retrospective analysis of cardiac MR images in 22 patients after repair of CoA was performed.PWV was measured and calculated with phase contrast MRI,and echocardiography was performed to measure both ventricular function and myocardial thickness during the same period.Age and sex-matched 22 normal subjects were served as a control group and their aortic PWVs were measured.Results The averaged PWV in study group was significantly higher than that in control group [(4 .42 ± 3 .02 )m/s vs (2 .73 ± 0 .76 )m/s,P =0.02].In study group,the PWV value of children with moderate anastomotic stenosis was the highest. ROC curve analysis showed the highest sensitivity and specificity could be achieved to distinguish the mild or moderate anastomotic stenosis when the threshold for PWV was 3.37 m/s.No significant correlations were found between left ventricular end-diastolic volume,left ventricular end-systolic volume,ejection fraction,left ventricular thickness and PWV.Conclusion PWV is increased in children after repair of CoA.Significant aortic remodelling can be observed in patients with moderate anastomotic stenosis.

Imaging manifestations and clinical analysis of mycoplasma pneumonia combined with pulmonary embolism in children / 实用放射学杂志

Objective To explore the clinical and imaging features of pulmonary embolism (PE)in children with mycoplasma pneumonia (MP).Methods The clinical features,imaging manifestations and laboratory data of 6 children with MP complicated by PE were reviewed retrospectively.Results 6 cases of children were admitted with chief complaints of fever and cough,the D-dimer levels were increased obviously.Consolidation was observed in 4 cases in the right lower lobe combined with pleural effusion and in 2 cases in the left lobe,which showed homogeneous enhancement.Filling defect of pulmonary artery was observed in 1 case,and other 5 cases showed sparse pulmonary vascular in consolidation area.D-dimer returned to normal level and consolidation was absorbed after anticoagulation therapy.Conclusion MP combined with PE in children is rare,and the positive detection rate of pulmonary artery angiography is low.PE should be considered when MP continues to deterioration after anti-infection treatment,even though there is no typical imaging findings of PE.

Evaluation of aorta's compliance after repair of coarctation of aorta using pulse wave velocity of MRI / 实用放射学杂志

Objective To evaluate aorta's compliance after repair of coarctation of the aorta (CoA)using the pulse wave velocity (PWV)of MRI.Methods A retrospective analysis of cardiac MR images in 22 patients after repair of CoA was performed.PWV was measured and calculated with phase contrast MRI,and echocardiography was performed to measure both ventricular function and myocardial thickness during the same period.Age and sex-matched 22 normal subjects were served as a control group and their aortic PWVs were measured.Results The averaged PWV in study group was significantly higher than that in control group [(4 .42 ± 3 .02 )m/s vs (2 .73 ± 0 .76 )m/s,P =0.02].In study group,the PWV value of children with moderate anastomotic stenosis was the highest. ROC curve analysis showed the highest sensitivity and specificity could be achieved to distinguish the mild or moderate anastomotic stenosis when the threshold for PWV was 3.37 m/s.No significant correlations were found between left ventricular end-diastolic volume,left ventricular end-systolic volume,ejection fraction,left ventricular thickness and PWV.Conclusion PWV is increased in children after repair of CoA.Significant aortic remodelling can be observed in patients with moderate anastomotic stenosis.

Imaging manifestations and clinical analysis of mycoplasma pneumonia combined with pulmonary embolism in children / 实用放射学杂志

Objective To explore the clinical and imaging features of pulmonary embolism (PE)in children with mycoplasma pneumonia (MP).Methods The clinical features,imaging manifestations and laboratory data of 6 children with MP complicated by PE were reviewed retrospectively.Results 6 cases of children were admitted with chief complaints of fever and cough,the D-dimer levels were increased obviously.Consolidation was observed in 4 cases in the right lower lobe combined with pleural effusion and in 2 cases in the left lobe,which showed homogeneous enhancement.Filling defect of pulmonary artery was observed in 1 case,and other 5 cases showed sparse pulmonary vascular in consolidation area.D-dimer returned to normal level and consolidation was absorbed after anticoagulation therapy.Conclusion MP combined with PE in children is rare,and the positive detection rate of pulmonary artery angiography is low.PE should be considered when MP continues to deterioration after anti-infection treatment,even though there is no typical imaging findings of PE.

Influence of nitrogen forms ratio on growth and photosynthetic characteristics in Prunella vulgaris / 中国中药杂志

<p><b>OBJECTIVE</b>The effects of different nitrogen forms on the growth and photosynthetic characteristics of Prunella vulgaris were observed.</p><p><b>METHOD</b>Water culture experiments were carried out to observe the effects of NH4+: NO3- ratios(100:0, 75: 25, 50:50, 25:75, 0:100 in mmol x L(-1)) on the growth and photosynthetic characteristics of P. vulgaris.</p><p><b>RESULT</b>The leaf area, fresh biomass and P(n) of these cultivars increased with the increasing of NH4(+) -N: NO3(-) -N ratios, and they were found to be the highest in 25: 75 NH4(+) -N: NO3)-) -N. However, they decreased with the increasing NH4(+) -N: NO3(-) -N ratio further. P. vulgaris had a minimum leaf area, biomass, chlorophyll content and P(n) in pure ammonium group. The biggest chlorophyll and carotenoid contents were found in the ratios of NH4(+) -N to NO3(-) -N of 50: 50.</p><p><b>CONCLUSION</b>The results indicated that properly increasing nitrate proportion could promote the growth and photosynthesis of P. vulgaris.</p>

Identification of differentially expressed proteins in the liver of Oncomelania snails induced by Eomecon chinanthe sanguinarine / 中华预防医学杂志

<p><b>OBJECTIVE</b>To identify the differentially expressed proteins in the liver of Oncomelania snails induced by Eomecon chinanthe sanguinarine.</p><p><b>METHODS</b>Sanguinarine was extracted and purified from the dry powder of Eomecon chinanthe. Oncomelania snails were immersed in 5 mg/L sanguinarine (50 Oncomelania snails per 500 ml) or pure water for 36 h (25°C) and the livers were isolated from live snails. Total liver proteins were extracted and separated by two-dimensional gel electrophoresis. Electrophoretogram was analyzed by Image Master 2D 5.0 software. The differentially expressed proteins between sanguinarine group and pure water group were selected and analyzed by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS) and tandem mass spectrometry sequencing of tryptic peptides.</p><p><b>RESULTS</b>In terms of protein spots, 433 ± 14 and 385 ± 12 were observed in sanguinarine group and in water group respectively. The eleven identified differentially expressed proteins included tropomyosin, hypothetical protein XP_533132, actin 87E, keratin 6A, beta-tubulin, mitochondrial inner membrane protein isoform 4, keratin 2, allatostatin precursor, ENSANGP00000020184, actin-3 and ENSANGP00000013943. Among them, hypothetical protein XP_533132 and ENSANGP00000013943 were down-regulated and the other nine proteins were up-regulated in sanguinarine group.</p><p><b>CONCLUSION</b>Sanguinarine could alter the expression of proteins in livers of Oncomelania snails.</p>

The protective effect of melatonin on auditory cortex toxicity induced by cis-platinum / 中国应用生理学杂志

<p><b>AIM</b>To investigate the toxic response in auditory cortex of guinea pigs caused by cis-platinum (DDP), and the protective role of melatonin in this effect.</p><p><b>METHODS</b>Cis-platinum and melatonin were injected peritoneally. LDH, MDA, NO in the auditory cortex were detected by spectrophotometeR.</p><p><b>RESULTS</b>The body weight of the guinea pigs was diminished by peritoneal injection of Cis-platinum for 7 days (P < 0.01). Peritoneal injection of Cis-platinum induced the increased leakage of LDH (P < 0.05 vs injection of normal saline). This effect was reduced by injection of MT (P < 0.05). The content of MDA in the auditory cortex was also increased because of injection of Cis-platinumv for 7 days (P < 0.01) and MT reduced this effect (P < 0.05). The change of NO in the auditory cortex was not statistically significant after injection of Cis-platinum or Cis-platinum with MT.</p><p><b>CONCLUSION</b>Peritoneal injection of Cis-platinum could destroy neurons in the auditory cortex. This effect could be reduced by melatonin by an anti-free radials mechanism.</p>

Screening and identification of differentially expressed proteins between adult female and male worms of Schistosoma japonicum / 中华预防医学杂志

<p><b>OBJECTIVE</b>To screen and identify differentially expressed proteins between adult female and male worms of Schistosoma japonicum(S.japonicum).</p><p><b>METHODS</b>Two rabbits infected with the cercaria were perfused with saline in carotid, and approximately two hundred adult female and two hundred male worms of S.japonicum were collected. Approximately 300 microg soluble and hydrophobic proteins of adult female and male worms of S.japonicum were extracted and then the proteins were separated by two-dimensional gel electrophoresis respectively. The analysis using ImageMaster Platinum 2D 5.0 resulted in differentially expressed proteins between adult female and male worms, which were subjected to matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS) and tandem mass spectrometry sequencing of tryptic peptides.</p><p><b>RESULTS</b>There were (255 +/- 10) and (224 +/- 12) spots detected for soluble proteins and (200 +/- 11) and (132 +/- 8) spots for hydrophobic proteins from adult female and male worms respectively. Six differential proteins were identified, five up-regulated proteins in female worms were thioredoxin, putative ferritin-1 heavy chain, chain B in solution structure of the human ubiquitin-conjugating-enzyme-like protein Mms2-Ubiquitin Complex, heat shock protein 10, cytoplasmic fatty acid binding protein variant H; while only one up-regulated proteins in male worms was identified as 48 kDa histamine receptor subunit peptide 4.</p><p><b>CONCLUSION</b>Several differentially expressed proteins between female and male worms of S. japonicum were recognized through screening and identifying differential proteins between female and male worms of S.japonicum.</p>

The digit map based on gridding orientation pattern showing the distribution of Oncomelania / 中国地方病学杂志

Objective To explore the Oneomehnia distribution on electronic map based on gridding orientation pattern of marshlands in Changsha along Xiangjiang River,in order to manage snail information in a visual and digital way.Methods The data of geographic information and snail information were collected by global positioning system(GPS)and database was established using systematic sampling,and then an information management system of electronic map about the distribution of Oncomelania was designed.The degree of Oncomelania was expressed in different colors,the Oncomelania information in the database on the digital map wag reflected accurately using the geographic information system(GIS)technology.Results The electronic map of the distribution information of 20 marshlands in Changsha along Xiangjiang River were drawn.At the same time,the information could be grasped compreheusively.Digit map contains geographic information and database of snail information,such as the row and rnum,the density of alive and infectious snails,the area and geographic information et al.A method of managing and analyzing snail information with higher efficiency was offerred in this article.Conclusion Conventional methods of managing and analyzing Oncomelania information are reformed into digitalization and visualization.

Relationship between insulin resistance and other metabolic disorders in hypertensive patients / 中华全科医师杂志

Objective To explore the relationship between insulin resistance and other metabolic disorders in patients with essential hypertension (EH).Methods Glucose metabolism rate (GMR) was measured by euglycemic insulin clamp technique,and salt sensitivity was tested by increase in blood pressure after salt load and its decreases alter depletion of sodium in 26 healthy subjects and 84 patients with EH.Results GMR lowered significantly in patients with EH than that in healthy subjects,P