Objective: Cardiac magnetic resonance (CMR) is a diagnostic tool that provides precise and reproducible information about cardiac structure, function, and tissue characterization, aiding in the monitoring of chemotherapy response in patients with lightchain cardiac amyloidosis (AL-CA). This study aimed to evaluate the feasibility of CMR in monitoring responses to chemotherapy in patients with AL-CA. Materials and Methods: In this prospective study, we enrolled 111 patients with AL-CA (50.5% male; median age, 54 [interquartile range, 49–63] years). Patients underwent longitudinal monitoring using biomarkers and CMR imaging. At followup after chemotherapy, patients were categorized into superior and inferior response groups based on their hematological and cardiac laboratory responses to chemotherapy. Changes in CMR findings across therapies and differences between response groups were analyzed. Results: Following chemotherapy (before vs. after), there were significant increases in myocardial T2 (43.6 ± 3.5 ms vs. 44.6 ± 4.1 ms; P = 0.008), recovery in right ventricular (RV) longitudinal strain (median of -9.6% vs. -11.7%; P = 0.031), and decrease in RV extracellular volume fraction (ECV) (median of 53.9% vs. 51.6%; P = 0.048). These changes were more pronounced in the superior-response group. Patients with superior cardiac laboratory response showed significantly greater reductions in RV ECV (-2.9% [interquartile range, -8.7%–1.1%] vs. 1.7% [-5.5%–7.1%]; P = 0.017) and left ventricular ECV (-2.0% [-6.0%–1.3%] vs. 2.0% [-3.0%–5.0%]; P = 0.01) compared with those with inferior response. Conclusion Cardiac amyloid deposition can regress following chemotherapy in patients with AL-CA, particularly showing more prominent regression, possibly earlier, in the RV. CMR emerges as an effective tool for monitoring associated tissue characteristics and ventricular functional recovery in patients with AL-CA undergoing chemotherapy, thereby supporting its utility in treatment response assessment.

  Objective  Myocardial fibrosis is a potential mechanism of light-chain myocardial amyloidosis(AL-CA). This research aimed at exploring the correlation between multiparameter cardiac magnetic resonance (CMR) and myocardial fibrosis by relating the CMR myocardial tissue characteristics, the morphological and the functional parameters with gallium-68-labeledfibroblast activation protein inhibitor 04 positron emission tomography (⁶⁸Ga-FAPI PET).  Methods  We gave the patients diagnosed with AL-CA in Peking Union Medical College Hospital from August to December 2021 the examinations of CMR and ⁶⁸Ga-FAPI PET/CT. We recorded and analyzed the information on clinical manifestations and examinations of the patients.  Results  A total of 23 patients with AL-CA were included, 15 (65.2%)of which were male and the mean age was 58.3±6.5 years. Patients with high ⁶⁸Ga-FAPI-04 uptake had shown growth in myocardial extracellular volume (ECV), significantly higher than those in the negative group (P=0.047). In addition, patients' myocardial ECV was positively correlated with myocardial FAPI uptake (r=0.628, P=0.001;r=0.727, P < 0.001;r=0.661, P=0.001). Patients in the positive group showd reduced left ventricular (LV) ejection fraction (EF)(P < 0.001).LVEF (r=-0.798, P < 0.001;r=-0.794, P < 0.001; r=-0.795, P < 0.001) and right ventricular (RV)EF (r=-0.735, P < 0.001;r=-0.739, P < 0.001;r=- 0.684, P < 0.001) showd negatively correlated with myocardial FAPI uptake, LV circumferential strain (r=0.668, P < 0.001;r=0.708, P < 0.001;r=0.705, P < 0.001), LV longitudinal strain (r=0.629, P=0.001;r=0.635, P=0.001; r=0.597, P=0.003), and RV longitudinal strain (r=0.575, P=0.004; r=0.792, P < 0.001;r=0.673, P < 0.001) were negatively correlated with myocardial FAPI uptake.  Conclusions  FAPI-related fibroblast activation is concurrent with CMR-related abnormal myocardial interstitial characteristics that leads to the decreased function of the myocardial movement. Patients with increased FAPI uptake present with increased ECV, decreased EF, and decreased strain with morphological abnormalities.

Objective:To explore the application value of two-dimensional speckle tracking imaging (2D-STI) in evaluating diaphragm function, and to compare the ability of 2D-STI and conventional diaphragm ultrasonography in diagnosing diaphragmatic dysfunction and evaluating disease severity in patients with acute exacerbation of chronic obstructive pulmonary disease (AECOPD).Methods:A total of 58 AECOPD patients admitted to the First Affiliated Hospital of Xi′an Jiaotong University from January to October 2021 were retrospectively enrolled as AECOPD group, and 34 healthy subjects were recruited as control group during the same period. Repeatability test of diaphragmatic 2D-STI was performed. According to modified Medical Research Council (mMRC) dyspnea scores system and COPD Assessment Test (CAT), mMRC 0-1 and CAT<10 was classified as group A, mMRC≥2 and CAT≥10 was classified as group B. The baseline characteristics, conventional diaphragm ultrasonography parameters(thickening fraction and excursion) and 2D-STI parameters (longitudinal and radial strains) were compared between the AECOPD group and the control group, and the Spearman correlation between parameters of AECOPD group and forced expiratory volume in one second (FEV1) was analyzed. The differences of these parameters between group A and B were also compared. The ROC curve of conventional diaphragm ultrasonography parameters and 2D-STI parameters was plotted to differentiate group A from group B, and the diagnostic efficacy was evaluated.Results:Great intra- and inter-observer reproducibility was found for all diaphragmatic 2D-STI parameters, with ICCs above 0.80 for all measurements. The control group and the AECOPD group did not differ in age, sex and body mass index( P>0.05), whereas there were significant differences in smoking history, lung function, bilateral thickening fraction, excursion, longitudinal and radial strains( P<0.05). Compared with control group, patients in group A had a significant increase in diaphragm thickness ( P<0.05), while there was no significant difference in that between group B and control group ( P>0.05). The bilateral longitudinal strains, radial strains and thickening fraction of diaphragm were linearly correlated with FEV1 (right side rs=0.828, 0.794, 0.843, respectively; all P<0.001; left side rs=0.757, 0.704, 0.752, respectively; all P<0.001 ), while the correlation between excursion and FEV1 was not significant(right side rs=0.247, left side rs=0.253; all P>0.05). There were significant differences in bilateral longitudinal strains, radial strains and thickening fraction between group A and group B(all P<0.05), whereas there was no significant difference in excursion between the two groups ( P>0.05). ROC analysis showed bilateral longitudinal and radial strains had higher accuracy in distinguishing group A from group B than thickening fraction and excursion(right side AUCs 0.90, 0.84, 0.78 and 0.62, respectively; left side AUCs 0.85, 0.83, 0.77 and 0.62, respectively). Conclusions:2D-STI is a real-time noninvasive technique for diaphragm function assessment, which has high clinical value. Compared with conventional ultrasonography, 2D-STI shows more accuracy and effectiveness in diagnosing diaphragmatic dysfunction and evaluating disease severity of patients with AECOPD.

Objective:To evaluate the clinical effect of Toric design orthokeratology in myopic teenagers with mild-to-moderate astigmatism.Methods:A non-randomized controlled clinical study was conducted.Eighty juvenile myopia patients (160 eyes) diagnosed with mild to moderate astigmatism with myopia after mydriatic computer optometry and received the treatment of orthokeratology at Zhejiang Rongjun Hospital from January 2016 to June 2017 were enrolled.The patients were divided into regular spherical design orthokeratology group and Toric design orthokeratology group, with 80 eyes (40 cases) in each group.The patients wore orthokeratology for 8 to 10 hours every night and were re-examined at 1 day, 1 week and 1, 3, 6, 12 and 18 months after wearing, respectively.The visual acuity, refraction, corneal health status and central deviation of the treatment area in the corneal topography map were measured and recorded during the 18-month treatment.The complications during treatment were recorded.After 12-month wearing, the uncorrected visual acuity and the center deviation of the treatment area were compared between the two groups.After 18-month wearing, patients in the two groups stopped wearing the orthokeratology lens for 1 month, and then the refraction examination, IOLMaster and corneal topography were performed to compare the spherical equivalent, axial length and degree of astigmatism.This study protocol adhered to the Declaration of Helsinki and was approved by an Ethics Committee of Zhejiang Rongjun Hospital (No.2020-10). Written informed consent was obtained from guardians prior to any medical examination.Results:After 12-month wearing, the center deviation of the shaping treatment area was (0.86±0.23)mm in the Toric design orthokeratology group, which was significantly lower than (1.16±0.44)mm in the regular spherical design orthokeratology group ( t=5.404, P<0.001). After 12-month wearing, the uncorrected visual acuity was (0.03±0.08) LogMAR in the Toric design orthokeratology group, which was significantly higher than (0.09±0.10) LogMAR in the regular spherical design orthokeratology group ( t=2.963, P=0.004). The spherical equivalent and the axial length of Toric design orthokeratology group were significantly smaller than those of the regular spherical design orthokeratology group ( t=2.542, 2.107; both at P<0.05), and there was no statistically significant difference in the degree of astigmatism between the two groups ( t=0.821, P=0.413). During the 18-month follow-up, the adverse reaction, punctate corneal epithelial opacity, occurred in 18 eyes.The incidence of adverse effect was 6.26%(5/80) in the Toric design orthokeratology group, which was significantly lower than the 16.25% (13/80) in the regular spherical design orthokeratology group ( χ2=3.897, P=0.048). Conclusions:The Toric design orthokeratology shows better efficacy in myopia control as well as reducing the adverse reaction rate in juvenile myopia, and it can better solve the deviation in corneal shaping in the use of regular spherical design orthokeratology.

Objective To explore the domestic and foreign research status and development trend of post stroke fatigue (PSF) by bibliometric analysis method,in order to provide recommendations for future research in this field.Methods Studies about PSF were retrieved from WanFang database,CNKI,VIP,China Biology Medicine (CBM),PubMed,Ovid,Embase,Google Scholar and authoritative journals in this field from January 1999 to March 2017.The information,including title,country,journal name,first author,publication year,institutions,research field,keywords,types of literature and research methods,was extracted,and statistical analysis was performed by SPSS19.0 and Nvivo11.0 software.Results A total of 279 literatures were included,and the total number of publication literatures showed an upward trend over time.These researches involved 167 institutions and 140 kinds of journals.The maximum number of articles published by the same first author was 9.According to the types of literatures and research methods,foreign literatures were divided into 9 categories which were mainly descriptive researches (95 papers,53.67％);domestic literatures were divided into 6 categories which were mainly interventional studies (39 papers,38.24％).The foreign researches involved 13 subjects which were mainly related to neurology (76 papers,42.94 ％) and rehabilitation medicine (27 papers,15.25 ％).The domestic researches only involved 5 subjects which were mainly related to neurology (45 papers,44.12 ％) and traditional Chinese medicine (34 papers,33.33 ％).Many of foreign researches focused on exploring risk factors of PSF,which accounted for about 62.11 ％ of the descriptive studies,and studies about pathogenesis of PSF have been extended to molecular biology.Domestic researches were more focused on Chinese medicine intervention methods,which accounted for 53.42％ (excepting review literatures).Conclusion PSF is still the research focus at home and abroad.Research on pathogenesis of PSF is at an exploratory stage,and there is still a lack of effective intervention method.Compare to foreign countries,subjects of domestic studies in PSF are limited,researches on etiology and mechanism of PSF are ignored,and research method is unitary.

Objective To investigate the relationship between serum vitamin D level and prognosis in patients with acute cerebral infarction. Methods One hundred patients with acute cerebral infarction within 48 h and 60 healthy subjects were selected. The serum 25-hydroxy-vitamin D level was measured. The patients with acute cerebral infarction were divided into vitamin D sufficient group, vitamin D insufficient group and vitamin D deficiency group according to the serum 25- hydroxy- vitamin D level. The National Institutes of Health stroke scale (NIHSS) before treatment and 14 d after treatment was evaluated, and this result reflected short- term prognosis; the long- term prognosis was evaluated by modified Rankin scale (mRS) 3 months after treatment. Results The serum 25-hydroxy-vitamin D level in patients with acute cerebral infarction was significantly lower than that in healthy subjects:(14.21 ± 0.98)μg/L vs. (22.43 ± 1.01)μg/L, and there was statistical difference (t=3.95, P=0.012). The patients with acute cerebral infarction were divided into 3 groups according to the serum 25- hydroxy-vitamin D level:vitamin D sufficient group (19 cases), vitamin D insufficient group (28 cases) and vitamin D deficiency group (53 cases). The NIHSS before treatment and 14 d after treatment in vitamin D sufficient group was significantly lower than that in vitamin D insufficient group and vitamin D deficiency group: (7.03 ± 1.82) scores vs. (10.21 ± 2.03) and (14.35 ± 2.96) scores, (2.04 ± 1.86) scores vs. (5.21 ± 2.28) and (10.38 ± 2.34) scores, and that in vitamin D insufficient group was significantly lower than that in vitamin D deficiency group, and there were statistical differences (P<0.01). The Pearson correlation analysis result showed that the serum 25- hydroxy- vitamin D level was negatively correlated with NIHSS scores (r = -1.738, P = 0.031). The short- term total effective rate in vitamin D sufficient group was significantly higher than that in vitamin D insufficient group and vitamin D deficiency group:17/19 vs. 67.9% (19/28) and 47.2% (25/53), and that in vitamin D insufficient group was significantly higher than that in vitamin D deficiency group, and there were statistical differences (P<0.05). The long- term good prognosis rate in vitamin D sufficient group was significantly higher than that in vitamin D insufficient group and vitamin D deficiency group:18/19 vs. 75.0%(21/28) and 50.9%(27/53), and that in vitamin D insufficient group was significantly higher than that in vitamin D deficiency group, and there were statistical differences (P<0.05). Conclusions The serum vitamin D level is significantly decreased in patients with acute cerebral infarction. It is negatively correlated with NIHSS scores. And it is important to judge prognosis.

Objective: To discuss the pathogenesis,clinical manifestations,diagnosis,differential diagnosis, treatment,and prognosis of the patient with rituximab (RTX)-induced interstitial lung disease (ILD) (RTX-ILD).Methods:A male patient aged 19 years old was confirmed as classical Hodgkin's lymphoma more than 2 years ago,and received autologous hemopoietic stem cell transplantation (HSCT)when the disease recurred 1 year ago.Two months after HSCT,the maintenance chemotherapy was given every month with 375 mg· m-2 RTX,but the mediastinal recurrence appeared during the period,then the mediastinal residual lesion radiotherapy was done for 10 times.However,8 d after the third RTX chemotherapy,the patient experienced post-exercising tachypnea,fever,cough,chest congestion,and limb weakness.The chest CT scanning results suggested ground gloss opacity on both lungs,and blood gas analysis suggested a hypoxemia.Neither antibacterial nor antifungal treatment worked well.Afterwards,the sequential etiological examination showed the negative results,and the bronchoscope examination showed the normal results as well.Considering about the possibility of RTX-ILD,RTX was stopped immediately and turned to intravenous infusion of methylprednisolone 40 mg per day.Results:Five d later,the symptoms of the patients were improved,and the follow-up methylprednisolone was changed to oral and gradually reduced to discontinuation.Conclusion:RTX-ILD is relatively rare,and its clinical manifestations lack specificity. Hormonotherapy is the main method in treatment of RTX-ILD. The patients sensitive to hormonotherapy have better prognosis than those insensitive to hormonotherapy.

Objective: To investigate the clinical manifestation, cytogenetics, gene mutations and prognostic factors of chronic neutrophilic leukemia (CNL) . Methods: 16 CNL cases, according to WHO (2016) -definition, were reviewed retrospectively. Identifications of the CSF3R, ASXL1, SETBP1, CALR and MPL mutations were performed by direct sequencing. JAK2 V617F mutation was detected by AS-PCR. Results: Of the 16 CNL patients, the median age was 64 (43-80) years with a male predominance of 75% (12/16) . The median hemoglobin was 114 (81-154) g/L, with median WBC of 41.20 (26.05-167.70) (10⁹/L and median PLT of 238 (91-394) ×10⁹/L.The median level of marrow fibrosis (MF) was 1 (0-3) degree. There was no other cytogenetic abnormalities except t (1;7) (p32;q11) , +21 and 14ps+ for each. All the 16 CNL patients harbored CSF3R T618I mutation. ASXL1 mutations were identified in 81% (13/16) , while SETBP1 mutations were confirmed in 63% (10/16) . The CALR K385fs*47 mutation was found. There was no mutation in JAK2 V617F or MPL in the above 16 patients. The median overall survival (OS) of patients presented with WBC≥50×10⁹/L at diagnosis (11 months) was significantly shorter than of WBC<50×10⁹/L (39 months, P=0.005) . Conclusion CSF3R T618I mutation was specific for CNL. The median OS of CNL patients was 24 months, and WBC≥50×10⁹/L at diagnosis was an unfavorable prognostic factor.

Objective To observe the effect of connect meridians inducing Yin from Yang on muscle-tension after cerebral infarction. Methods 82 patients with cerebral infarction in Second Hospital of Harbin from 2010 to 2014 were divided into observation group (n=41) and control group (n=41) according to hospitalization order. The observation group accepted acupuncture of connecting meridians inducing Yin from Yang, and the control group accepted the traditional acupuncture method for 2 weeks. The situation of spasticity, the motor limb function of limbs, and activities of daily living were evaluated with modified Ashworth Scale (MAS), Clinic Spasticity Index (CSI), Fugl-Meyer Assessment (FMA) and Barthel index (BI), respectively. Results Compared with the control group, the score of MAS decreased (t=2.212, P=0.030), the score of CSI decreased (t=2.514, P=0.014), the score of FMA increased (t=4.288, P<0.001), and the score of BI in-creased (t=2.970, P=0.004) in the observation group after treatment. Conclusion The acupuncture of connecting meridians inducing Yin from Yang can reduce the muscle-tension of limbs, improve the motor function and increase the activities of daily living.

Objective To evaluate effects of daily average temperature on the occurrence of urticaria in Lanzhou city,and to analyze differences in the effects between different populations.Methods Time-series data on daily outpatient visits for urticaria between January 1,2007 and December 31,2013 were collected from the First Hospital of Lanzhou University and Lanzhou University Second Hospital.Daily meteorological data during this peroid were obtained from the Gansu Meteorological Bureau.Distributed lag non-linear models were used to analyze the association between daily average temperature and occurrence of urticaria,and the analysis was stratified by age and gender.Results The association between daily average temperature and daily number of outpatient visits for urticaria was nonlinear.Low temperature had significant lag effects on the daily number of outpatient visits for urticaria,with the maximum relative risk (RR) value (1.014 [95％ CI 1.000-1.023]) observed at 6 ℃ on lag day 18.Stratification analysis demonstrated that the effects of high temperature on the number of outpatient visits for urticaria were apparent on the day of exposure in age groups of 0-18 and 19-64 years,but decreased on the day of exposure in the age group ≥ 65 years.The effects of low temperature,which showed similar trends along with the increment of lag days in all groups,were relatively delayed and occurred 2 to 4 days after exposure.Conclusions Air temperature affects the occurrence of urticaria in Lanzhou city.Low temperature has evident lag effects on the occurrence of urticaria,while high temperature does not have.