Guillain-Barre syndrome rarely develops after allogeneic hematopoietic stem cell transplantation (allo-HSCT), and only a few reports exist in China. Guillain-Barre syndrome is an acute and life-threatening condition that requires early diagnosis and treatment. A patient with acute myeloid leukemia underwent allogeneic HSCT for >5 months and gradually developed limb muscle weakness and limited eye movement after coexisting with delayed acute intestinal graft-versus-host disease. After the examination of cerebrospinal fluid and electromyography, the diagnosis of Guillain–Barre syndrome was confirmed. After a high-dose intravenous immunoglobulin (IVIg) treatment, muscle strength gradually recovered, and the prognosis was good.

Humans ; East Asian People ; Surveys and Questionnaires ; Vitiligo/epidemiology*

Allografts ; COVID-19 ; China/epidemiology* ; Disease Outbreaks ; Humans ; Kidney Transplantation/adverse effects* ; SARS-CoV-2

Objective:To evaluate the effect of edaravone on long-term cognitive function in elderly patients undergoing hip replacement.Methods:A total of 160 patients, aged≥65 yr, undergoing elective hip replacement, were divided into 2 groups ( n=80 each) using the random sequence generated by the McLeod-modified Wichmann-Hill pseudo-random number generator: edaravone group (group E) and control group (group C). Spinal-epidural anesthesia was applied in two groups.Edaravone 60 mg (in 100 ml of normal saline, infusion rate 200 ml/h) was intravenously infused from the time point immediately after achieving the anesthesia plane until the following 30 min.Serum chemokine ligand 13 (CXCL13) and interleukin-6 (IL-6) concentrations were detected by enzyme-linked immunosorbent assay before anesthesia, during surgery (30 min after skin incision), and at postoperative days 1, 3 and 7.The Confusion Assessment Method Scale in Chinese was used to detect the postoperative delirium at postoperative days 1, 2, 3 and 7, and the Telephone Interview for Cognitive Status-Modified and ADL score were adopted to assess the cognitive function and quality of daily living, respectively, and the occurrence of cognitive impairment was recorded at 1 and 12 months after surgery. Results:Compared with group C, the total Telephone Interview for Cognitive Status-Modified score and ADL score were significantly increased, the incidence of postoperative delirium and cognitive impairment was decreased, and the serum CXCL13 and IL-6 concentrations were decreased during surgery and at each time point after surgery in group E ( P<0.05). Conclusion:Edaravone can reduce inflammatory responses and improve long-term cognitive function in elderly patients undergoing hip replacement.

Objective: To explore the relationship between anthropometric indices and the incident risk of hypertension, compare novel anthropometric indices with traditional indices in hypertension prediction and establish hypertension prediction models among elderly Chinese. Methods: A total of 27 009 retirees from the Dongfeng Motor Corporation were recruited at baseline in 2008 and the first follow-up was conducted in 2013. After the exclusion of participants less than 60 years old, participants with hypertension, coronary heart disease, stroke, cancer, and those with missing data, a total of 6 784 elderly participants were enrolled in this study. A multivariate logistic regression model was used to analyze the relationship between traditional anthropometric indices, body mass index (BMI), waist circumference (WC), waist-to-height ratio (WHtR), novel anthropometric indices, visceral adiposity index (VAI), body shape index (ABSI), body roundness index (BRI), and the incident risk of hypertension. Meanwhile, a multivariate logistic regression model was used to establish hypertension prediction models. Receiver operating characteristic (ROC) curve was applied to compare the prediction ability of different models. Results: A total of 1 787 incident cases of hypertension were identified, with the incidence of hypertension about 27.59%. Significant positive associations were detected between BMI, WC, WHtR, VAI, BRI and the incident risk of hypertension after adjusting for potential confounders (all P values<0.05). In men, the OR (95%CI) (upper tertile vs lower tertile) was 1.45 (1.22-1.73) for VAI, and 1.86 (1.55-2.23) for BRI. In women, the OR (95% CI) (upper tertile vs lower tertile) was 1.55 (1.22-1.96) for VAI, and 1.60 (1.27-2.01) for BRI. For ABSI, no significant association was observed in either men (OR (95%CI): 1.07 (0.90-1.28)) or women (OR (95%CI): 1.03 (0.82-1.29), both P values >0.05). The basic hypertension prediction model included age, drinking (only in men), education status (only in men), systolic blood pressure (SBP), diastolic blood pressure (DBP), and fasting blood glucose levels. Based on the basic prediction model, BMI (in men: AUC=0.697) and BRI (only in men: AUC=0.696) improved area under ROC curve (AUC) significantly (P<0.05). BMI was the strongest predictor in both men (AUC=0.697) and women (AUC=0.685) in the extended model. Conclusion Significant positive associations were detected between BMI, WC, WHtR, VAI, BRI and the incident risk of hypertension among elderly Chinese. BMI was the strongest predictor in hypertension prediction model compared with other anthropometric indices.

Objective To explore the value of diffusion weighted imaging (DWI) in combination with susceptibility weighted imaging (SWI) in prognosis prediction of traumatic axonal injury (TAI).Methods A retrospective study of 75 patients with TAI was performed to analyze the clinical data and the follow-up prognosis in the 6 months after injury.The detection rate of TAI lesion by DWI,SWI and conventional MRI was compared.Multiple factors analysis applied logistic regression analysis to analyze the relationship between associated factors and prognosis.Results The average detected TAI lesions were (19.92 ± 8.62) by DWI and (22.17 ± 11.72) by SWI,which had no significant differences (t=1.24,P＞0.05),but there was a significant difference bettween by conventional MRI and by DWI or SWI (all P＜0.05).DWI was more sensitive to non-hemorrhagic lesions and SWI was more sensitive to hemorrhagic lesions.However,the lesions revealed by them existed the overlap of location and pathology of lesions.Patients with poor outcomes had more number of central lesions than those patient with good outcomes (t=2.455,P＜ 0.05).Logistic regression analysis revealed that the predictive accuracy provided by the combination with imaging and clinical factors was 95.7 ％.Conclusions DWI and SWI both are sensitive to TAI lesions,and have ability to detect the lesions with different pathological characteristics,separately.Accurate prognosis prediction for patients with TAI may be provided by the combination of clinical and imaging factors.

A microcapsule is a spherical, with a diameter that can be controlled in the range of 200 -1500 μm and biocompatible semipermeable membrane, which allows the bidirectional diffusion of nutrients,oxygen, secreted therapeutic product, and waste but prevents the penetration of high molecular weight substances from the microcapsule, such as antibodies and immunocytes. In comparison to monolayer culture and multicellular tumor spheroid model, orthotopic injection of microencapsulated tumor cells has uncomparable advantages in cell proliferation, mimicking the in vivo situation, making orthotopic tumor model and distant organ metastases model. Microencapsulated tumor assay has the potential of being widely used for in vitro anticancer drug screening and evaluation of the effects. This article mainly reviews the advantages of microencapsulated tumor assay and its application.

Pancreatic cancer is a highly malignant tumor. Animal models of pancreatic cancer included xenograft models, carcinogen induced models, genetically engineered models. Xenograft models are relatively reliable and feasible, but the growth pattern is different between serve immunodeficienct animals and human beings. Carcinogens induced models simulated the environmental factors to reconstruct the development of pancreatic cancer. But carcinogens could have other biological effects. Genetically engineered models could make the occurrence of pancreatic cancer at the molecular level. But it is difficult to control the transgenic product accurately. No model could meet all the needs of different experiments. It is important to choose a suitable animal model in different experiments.

Objective To observe the process of polyamidoamine dendrimer modified single walled carbon nanotubes complexes (CNT-PAMAM-D) entering into pancreatic cancer BxPC3 cells, and to evaluate its safety as a vector. Methods The CNT-PAMAM-D were prepared by ultrasound, mixing and rinsing, and the morphology was characterized by atom force microscopy and transmission electron microscope. Then the prepared CNT-PAMAM-D was incubated with human pancreatic cancer cell line BxPC3 cells for 12, 48, 72hours, and then the cells were collected. Distribution of CNT-PAMAM-D in cells and cell ultrastructure was observed by transmission electron microscopy. Results After the combination of PAMAM-D and CNT, the surface of CNT was surrounded by dendrimer and nanocomposite particles with a size of 20 nm was formed. It was showed that CNT-PAMAM-D could be transfected into human pancreatic cancer cells by cell pinocytotic way, and it entered cytoplasm at 12 h. With the extension of the transfecting time, CNT-PAMAM-D could enter lysosomal and nucleus, but the morphology and ultrastructure ocf BxPC 3 cells was not significantly changed. Conclusions The CNT-PAMAM-D is a highly effective and safe nano vector.

Objective To summarize and analyze the pathological characteristics of solid pseudopapillary tumor of pancreas (SPTs).Methods The clinical data of 51 cases of SPTs were retrospectively analyzed.The immunohistochemical localizations of different markers (HSE,SYN,CD_(56),CD_(10),Nestin,Vim,a1-ACT,EMA,AE1/AE3 and CK19) on 39 SPTs were studied.Results Pathological features included a combination of solid and cystic components with pseudopapillae formation and degenerative regions without glands.Among the 39 cases of SPTs,the expression rate of NSE was 97.4%,the expression rate of CD_(56),CD_(10) was 84.6%,the expression rate of Nestin and Vim was 64% and 87%,the expression rate of S100 was 79.5%,the expression rate of a1-ACT and a1-AT was 82.1% and 79.5%,while the expression rate of SYN was 12.8%;however there was low expression and weak positive reaction of EMA,AE1/AE3 and CK19.Conclusions The typical pathological characteristics of SPTs may result from gradual degenerative changes induced anoxemia in some SPT's areas.The heterogeneity of SPTs on different antibody markers showed that the SPTs may be originated from pancreatic embryonic stem cells,and result from immature differentiation of the pluripotential stem cells during pancreatic genesis.