OBJECTIVE: To analyze the Epstein-Barr virus (EBV) load in different lymphocyte subsets, as well as clinical characteristics and outcomes in patients with hematologic malignancies experiencing EBV reactivation. METHODS: Peripheral blood samples from patients were collected. B, T, and NK cells were isolated sorting with magnetic beads by flow cytometry. The EBV load in each subset was quantitated by real-time quantitative polymerase chain reaction (RT-qPCR). Clinical data were colleted from electronic medical records. Survival status was followed up through outpatient visits and telephone calls. Statistical analyses were performed using SPSS 25.0. RESULTS: A total of 39 patients with hematologic malignancies were included, among whom 35 patients had undergone allogeneic hematopoietic stem cell transplantation (allo-HSCT). The median time to EBV reactivation was 4.8 months (range: 1.7-57.1 months) after allo-HSCT. EBV was detected in B, T, and NK cells in 20 patients, in B and T cells in 11 patients, and only in B cells in 4 patients. In the 35 patients, the median EBV load in B cells was 2.19×10⁴ copies/ml, significantly higher than that in T cells (4.00×10³ copies/ml, P <0.01) and NK cells (2.85×10² copies/ml, P <0.01). Rituximab (RTX) was administered for 32 patients, resulting in EBV negativity in 32 patients with a median time of 8 days (range: 2-39 days). Post-treatment analysis of 13 patients showed EBV were all negative in B, T, and NK cells. In the four non-transplant patients, the median time to EBV reactivation was 35 days (range: 1-328 days) after diagnosis of the primary disease. EBV was detected in one or two subsets of B, T, or NK cells, but not simultaneously in all three subsets. These patients received a combination chemotherapy targeting at the primary disease, with 3 patients achieving EBV negativity, and the median time to be negative was 40 days (range: 13-75 days). CONCLUSION In hematologic malignancy patients after allo-HSCT, EBV reactivation commonly involves B, T, and NK cells, with a significantly higher viral load in B cells compared to T and NK cells. Rituximab is effective for EBV clearance. In non-transplant patients, EBV reactivation is restricted to one or two lymphocyte subsets, and clearance is slower, highlighting the need for prompt anti-tumor therapy.
Humans ; Hematologic Neoplasms/virology* ; Herpesvirus 4, Human/physiology* ; Epstein-Barr Virus Infections ; Hematopoietic Stem Cell Transplantation ; Virus Activation ; Lymphocyte Subsets/virology* ; Flow Cytometry ; Killer Cells, Natural/virology* ; Male ; Female ; B-Lymphocytes/virology* ; Viral Load ; Adult ; T-Lymphocytes/virology* ; Middle Aged

Research on immune checkpoints such as programmed death protein-1(PD-1)and cytotoxic T lymphocyte antigen-4(CTLA-4)has provided new directions for tumor treatment.V-domain immunoglobulin suppressor of T-cell activation(VISTA)is an emerging immune checkpoint within the B7 family.Functioning as both a ligand and a receptor,VISTA is an inhibitory immune checkpoint molecule expressed in tumor cells,myeloid cells and T lymphocytes.It plays a crucial role in regulating autoimmunity,inflammatory response and tumor immunity.The non-redundant interactions between VISTA and other immune checkpoints,such as PD-1,may offer new therapeutic strategies and serve as a new target for overcoming immunotherapy resistance.This review summarizes the recent research progress on VISTA in hematological tumors,aiming to provide new insights into its application in the treatment of these malignancies.

The improvement of food labeling can improve consumers' health awareness, reduce the burden of chronic diseases on the health and economy, and promote the development of the healthy food industry. Disease Risk Reduction Claim has been developed in European Union and the U.S. for over 20 years, with mature management methods and experience, but it is still lacking in China. Learning and drawing on the international management experience of food disease risk reduction claims can assist China to establish food disease risk reduction claims and improve the food health claims and labeling system.
Humans ; United States ; European Union ; Food Labeling ; Food Industry ; China/epidemiology*

The improvement of food labeling can improve consumers' health awareness, reduce the burden of chronic diseases on the health and economy, and promote the development of the healthy food industry. Disease Risk Reduction Claim has been developed in European Union and the U.S. for over 20 years, with mature management methods and experience, but it is still lacking in China. Learning and drawing on the international management experience of food disease risk reduction claims can assist China to establish food disease risk reduction claims and improve the food health claims and labeling system.
Humans ; United States ; European Union ; Food Labeling ; Food Industry ; China/epidemiology*

Objective: To investigate the lifespan of erythrocytes in megaloblastic anemia (MA) patients. Methods: A prospective cohort study analysis. Clinical data from 42 MA patients who were newly diagnosed at the Department of Hematology, Lanzhou University Second Hospital from January 2021 to August 2021 were analyzed, as were control data from 24 healthy volunteers acquired during the same period. The carbon monoxide breath test was used to measure erythrocyte lifespan, and correlations between erythrocyte lifespan and laboratory test indexes before and after treatment were calculated. Statistical analysis included the t-test and Pearson correlation. Results: The mean erythrocyte lifespan in the 42 newly diagnosed MA patients was (49.05±41.60) d, which was significantly shorter than that in the healthy control group [(104.13±42.62) d; t=5.13,P=0.001]. In a vitamin B₁₂-deficient subset of MA patients the mean erythrocyte lifespan was (30.09±15.14) d, and in a folic acid-deficient subgroup it was (72.00±51.44) d, and the difference between these two MA subsets was significant (t=3.73, P=0.001). The mean erythrocyte lifespan after MA treatment was (101.28±33.02) d, which differed significantly from that before MA treatment (t=4.72, P=0.001). In MA patients erythrocyte lifespan was positively correlated with hemoglobin concentration (r=0.373), and negatively correlated with total bilirubin level (r=-0.425), indirect bilirubin level (r=-0.431), and lactate dehydrogenase level (r=-0.504) (all P<0.05). Conclusions: Erythrocyte lifespan was shortened in MA patients, and there was a significant difference between a vitamin B₁₂-deficient group and a folic acid-deficient group. After treatment the erythrocyte lifespan can return to normal. Erythrocyte lifespan is expected to become an informative index for the diagnosis and treatment of MA.
Humans ; Longevity ; Clinical Relevance ; Prospective Studies ; Erythrocytes ; Anemia, Megaloblastic ; Folic Acid ; Bilirubin ; Vitamins

OBJECTIVE: To retrospectively analyze clinical effect of 3D mirror printing combining with minimally invasive percutaneous plate osteosynthesis(MIPPO) technology in the treatment of adult clavicle fracture. METHODS: The clinical data of 32 adult patients with collarbone AllmanⅠdisplacement of fracture who had undergone the combination of 3D mirror printing with MIPPO technology treatment were collected from October 2019 to October 2020. There were 19 males and 13 females, aged from 19 to 55 years old with an average of(34.12±16.42) years old. According to Allman classification, there were 14 cases of AllmanⅠb and 18 cases of AllmanⅠc. Fracture occurred on the left in 17 cases and on the right in 15 cases. Postoperative complications, operation time, incision length, intraoperative blood loss, the number of fluoroscopies, fracture healing time of all patients were retrospectively analyzed, and the curative effect was evaluated by Constant-Murley shoulder joint score before operation, 1 and 6 months after operation. RESULTS: All the 32 patients were followed up for 6 to 8 months, with an average of (6.67±2.13) months. All the patients did not have postoperative complications such as incision infection and skin numbness in the operating area. The operation time was (35.37±4.28) min. The incision length was (3.78±0.45) cm. Intraoperative blood loss was(37.23±4.76) ml. The number of fluoroscopies was(3.12±0.47) times. Fracture healing time was (8.18±2.58) weeks. Constant-Murley shoulder joint score of the affected side at 1 and 6 months after operation was 81.08±3.92 and 98.03±1.05 respectively, which had a significant difference compared with 54.62±5.25 before operation(P<0.05). According to Constant-Murley shoulder function score at 6 months after operation, 30 cases were excellent and 2 cases were good. CONCLUSION 3D mirror printing can effectively assist MIPPO technique in the treatment of adult clavicle AllmanⅠdisplaced fracture. It not only has the advantages of less trauma and fewer complications of the MIPPO technique, but also can further shorten the operation time and improve the operation maneuverability. It is a better method in the treatment of adult clavicle AllmanⅠdisplaced fracture.
Adolescent ; Adult ; Blood Loss, Surgical ; Bone Plates ; Clavicle/surgery* ; Female ; Fracture Fixation, Internal/methods* ; Fractures, Bone/surgery* ; Humans ; Male ; Middle Aged ; Minimally Invasive Surgical Procedures/methods* ; Printing, Three-Dimensional ; Retrospective Studies ; Treatment Outcome ; Young Adult

Muscle spindle is the key proprioceptor in skeletal muscles and plays important roles in many physiological activities, such as maintaining posture, regulating movement and controlling speed variation. It has significant clinical relevance and is emerging as a promising therapeutic target for the treatment of motor functional impairment and metabolic diseases. In this review, we summarized muscle spindle distribution and the mechanism of mechanical signal transmission, and reviewed the research progress on morphological and structural characteristics of muscle spindles.
Muscle Spindles/physiology* ; Muscle, Skeletal/physiology* ; Clinical Relevance

OBJECTIVE: To explore the effect of anterolateral spinal canal decompression combined with short segment screw fixation with posterior approach for severe thoracolumbar burst fractures with spinal cord injury. METHODS: From January 2016 to June 2018, 16 patients with severe thoracolumbar burst fractures (more than 50% of ratio of spinal canal encroachment, reverse fragment at the posterior edge of the vertebral body) with spinal cord injury were retrospectively analyzed, including 10 males and 6 females, ranging in age from 19 to 57 years old. Causes of injury:8 cases of fall injury, 6 cases of traffic accident injury and 2 cases of other injuries. Fracture site:T RESULTS: All 16 patients were followed up, and the average follow up time was (15.9±5.4) months. The average operation time was (234±41) minutes and the average amount of bleeding was (431±93) ml. The loss of anterior height of injured vertebrae was (52.25±10.10)% before operation, (8.93± 3.61)% at 3 days after operation, and (9.25±2.88)% at the latest follow up. The results of 3 days after operation and the latest follow up were better than that before operation, and there was no significant differencesbetween results at the latest follow up and 3 days after operation ( CONCLUSION For severe thoracolumbar burst fracture and spinal cord injury, with more than 50% of ratio of spinal canal encroachment and reverse fragment at the posterior edge of the vertebral body, the anterolateral spinal canal decompression combined with short segment screw fixation with posterior approach has the characteristics of accurate reduction, complete decompression and firm fixation, and the clinical effect is satisfactory.
Adult ; Bone Screws ; Decompression ; Female ; Fracture Fixation, Internal ; Humans ; Lumbar Vertebrae/surgery* ; Male ; Middle Aged ; Retrospective Studies ; Spinal Canal ; Spinal Cord Injuries/surgery* ; Spinal Fractures/surgery* ; Thoracic Vertebrae/surgery* ; Treatment Outcome ; Young Adult

BACKGROUND: A novel coronavirus called severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), first identified in Wuhan, China, has been rapidly spreading around the world. This study investigates the epidemiological and clinical characteristics of coronavirus disease 2019 (COVID-19) patients in Zhejiang Province who did or did not have a history of Wuhan exposure. METHODS: We collected data from medical records of confirmed COVID-19 patients in Zhejiang Province from Jan. 17 to Feb. 7, 2020 and analyzed epidemiological, clinical, and treatment data of those with and without recorded recent exposure in Wuhan. RESULTS: Patients in the control group were older than those in the exposure group ((48.19±16.13) years vs. (43.47±13.12) years, P<0.001), and more were over 65 years old (15.95% control vs. 5.60% exposure, P<0.001). The rate of clustered onset was also significantly higher in the control group than in the exposure group (31.39% vs. 18.66%, P<0.001). The symptom of a sore throat in patients in the exposure group was significantly higher than that in the control group (17.30% vs. 10.89%, P=0.01); however, headache in the exposure group was significantly lower than that in the control group (6.87% vs. 12.15%, P=0.015). More patients in the exposure group had a significantly lower level of lactate dehydrogenase (LDH) and aspartate aminotransferase (AST) than those in the control group. There was no significant difference in any degree of COVID-19 including mild, severe, and critical between the two groups. CONCLUSIONS From the perspective of epidemiological and clinical characteristics, there was no significant difference between COVID-19 patients with and without Wuhan exposure history.
Adolescent ; Adult ; Aged ; Aspartate Aminotransferases ; blood ; Betacoronavirus ; Case-Control Studies ; Child ; Child, Preschool ; China ; epidemiology ; Coronavirus Infections ; epidemiology ; physiopathology ; therapy ; Female ; Humans ; Infant ; Infant, Newborn ; L-Lactate Dehydrogenase ; blood ; Male ; Middle Aged ; Pandemics ; Pneumonia, Viral ; epidemiology ; physiopathology ; therapy ; Retrospective Studies ; Young Adult

Salvia plebeia has been in use as traditional Chinese medicine (TCM) for more than 500 years. In this study, the complete chloroplast (cp) genome of S. plebeia was sequenced, assembled and compared to those of other five published Salvia cp genomes. It was found that the cp genome structure of S. plebeia was well conserved and had a total size of 151 062 bp. Four parameters were used to display the usage conditions of the codons of the amino acids in Salvia genus. Although the number of protein-coding genes in each species was the same, the total number of codons was different. Except for amino acids Trp and Met whose Relative Synonymous Codon Usage (RSCU) value of one condon was equal to 1, the remaining 19 amino acids had 1-3 preferred codons. The preferred codon names of each amino acid were coincident. The period size for the tandem repeats of six species ranged from 9 to 410 bp. Salvia cp genomes mainly possessed tandem repeats with a copy number less than or equal to 3. The sequence length of tandem repeats of the six species ranged from 25 to 824 bp. Highly viarable regions including four intergenic spacers and six partial genes were discovered as potential specific barcodes for Salvia species through cp genome-wide comparison. Finally, we performed phylogenetic analyses based on the complete cp genome and coding sequences respectively. These results provide information to help construct the cp genome library for Salvia, which may support studies of phylogenetics, DNA barcoding, population and transplastomics.