Rituximab is a monoclonal antibody targeting the CD20 antigen on the surface of B lymphocytes.Studies have shown that rituximab has brought hope for the treatment of malignant tumors and autoimmune diseases.In recent years,its application has expanded to immune-related renal diseases,including refractory minimal change nephrotic syndrome,focal segmental glomerulosclerosis,idiopathic membranous nephropathy,ANCA-associated vasculitis-induced renal injury,and lupus nephritis.This article reviews the application of rituximab in immune-related kidney diseases,providing a basis for the clinical treatment of related kidney diseases.

Objective:To evaluate the safety and efficacy of the probiotic Bifidobacterium longum subsp. longum BL21 (BL21) in preventing radiation-induced diarrhea (RID) in cervical cancer patients during radiotherapy (RT) and to investigate the intestinal microbiota in the patients. Methods:This study was a prospective, single-arm, phase Ⅱ clinical trial, involving cervical cancer patients treated with radical and adjuvant RT. From the first day of RT, participants took one pack of BL21 powder (containing 20 billion colony-forming unit(CFU) of Bifidobacterium longum subsp. longum BL21) orally every day until the end of RT. The occurrence of adverse events and RID during RT were assessed as per Common Terminology Criteria for Adverse Events ( CTCAE) v5.0. In this way, the safety and efficacy of BL21 in preventing RID were evaluated. Additionally, the intestinal microbiota in fecal samples collected from the patients before and after RT were analyzed using 16S rRNA sequencing. Results:A total of 35 cervical cancer patients were enrolled in this study, with 29 cases incorporated for the final analysis. No serious adverse event related to the administration of BL21 was observed. The patients exhibited slight RID, with the majority (22/29) developing no or grade 1 RID during RT. The microbiota in the fecal samples showed decreased alpha diversity after RT, as indicated by the Chao1 ( P = 0.002) and Shannon ( P = 0.005) indices. Furthermore, these samples exhibited a notably higher abundance of genus Clostridium (LDA score = 3.98). The fecal samples from patients with grade 1 RID or no RID post-RT exhibited higher alpha diversity than those from patients with grade 2 RID or above post-RT (Chao1: P = 0.07, Shannon: P = 0.28), as well as a high abundance of genera Gemmiger (LDA score = 4.48) and Dorea (LDA score = 3.83). Conclusions:The administration of BL21 to cervical cancer patients during RT is simple, convenient, safe, and effective in preventing RID, thus warranting further investigation.

Objective To analyze the distribution characteristics and trends of occupational exposure types of medical radiation workers in Gansu Province, China, and to provide a basis for administrative departments to formulate and adjust radiation protection policies. Methods According to the radiation health information platform, the data of occupational exposure types of radiation workers in Gansu Province from 2014 to 2023 were obtained. The proportions of occupational exposure types in each physical examination year was statistically analyzed. Results From 2014 to 2023, the number of medical radiation workers accounted for more than 70% of the total number of radiation workers. The proportion of X-ray imaging diagnostic radiation workers in the total number of medical radiation workers gradually decreased but remained the highest, exceeding 68% annually. The proportion of interventional radiology workers in the total number of medical radiation workers increased from 13.8% to 25.5%. The proportions of radiation therapy and nuclear medicine workers in the total number of medical radiation workers increased slowly. The numbers of interventional radiology and radiotherapy workers in tertiary hospitals both accounted for more than 70% of the total number of such workers in the province. The proportion of interventional radiology workers increased and then decreased. The proportion of radiotherapy workers increased significantly from 70.5% to 93.0%. The number of nuclear medicine workers in tertiary hospitals accounted for more than 80% of such workers in the province. Conclusion Radiation protection policies and measures should be adjusted according to the changes in the types of occupational exposure. The focus of these policies and measures should differ depending on the level of healthcare institutions, the type of radiological diagnostic and therapeutic services, and the characteristics of various occupational exposure types .

Rituximab is a monoclonal antibody targeting the CD20 antigen on the surface of B lymphocytes.Studies have shown that rituximab has brought hope for the treatment of malignant tumors and autoimmune diseases.In recent years,its application has expanded to immune-related renal diseases,including refractory minimal change nephrotic syndrome,focal segmental glomerulosclerosis,idiopathic membranous nephropathy,ANCA-associated vasculitis-induced renal injury,and lupus nephritis.This article reviews the application of rituximab in immune-related kidney diseases,providing a basis for the clinical treatment of related kidney diseases.

Objective:To evaluate the safety and efficacy of the probiotic Bifidobacterium longum subsp. longum BL21 (BL21) in preventing radiation-induced diarrhea (RID) in cervical cancer patients during radiotherapy (RT) and to investigate the intestinal microbiota in the patients. Methods:This study was a prospective, single-arm, phase Ⅱ clinical trial, involving cervical cancer patients treated with radical and adjuvant RT. From the first day of RT, participants took one pack of BL21 powder (containing 20 billion colony-forming unit(CFU) of Bifidobacterium longum subsp. longum BL21) orally every day until the end of RT. The occurrence of adverse events and RID during RT were assessed as per Common Terminology Criteria for Adverse Events ( CTCAE) v5.0. In this way, the safety and efficacy of BL21 in preventing RID were evaluated. Additionally, the intestinal microbiota in fecal samples collected from the patients before and after RT were analyzed using 16S rRNA sequencing. Results:A total of 35 cervical cancer patients were enrolled in this study, with 29 cases incorporated for the final analysis. No serious adverse event related to the administration of BL21 was observed. The patients exhibited slight RID, with the majority (22/29) developing no or grade 1 RID during RT. The microbiota in the fecal samples showed decreased alpha diversity after RT, as indicated by the Chao1 ( P = 0.002) and Shannon ( P = 0.005) indices. Furthermore, these samples exhibited a notably higher abundance of genus Clostridium (LDA score = 3.98). The fecal samples from patients with grade 1 RID or no RID post-RT exhibited higher alpha diversity than those from patients with grade 2 RID or above post-RT (Chao1: P = 0.07, Shannon: P = 0.28), as well as a high abundance of genera Gemmiger (LDA score = 4.48) and Dorea (LDA score = 3.83). Conclusions:The administration of BL21 to cervical cancer patients during RT is simple, convenient, safe, and effective in preventing RID, thus warranting further investigation.

Humans ; HIV-1/genetics* ; Anti-Retroviral Agents/therapeutic use* ; Mutation/genetics* ; Treatment Failure ; HIV Infections/genetics* ; Drug Resistance, Viral/genetics* ; Anti-HIV Agents/therapeutic use* ; Genotype

Objective:To explore the influencing factors of whole blood cells and genetics of medical radiation workers, and provide technical support for improving occupational health management and strengthening radiation protection.Methods:In January 2022, a total of 4180 medical radiation workers who underwent occupational health examination in Gansu Provincial Center for Disease Control and Prevention from January 2020 to December 2021 were collected as the research objects, and the results of demographic characteristics, whole blood cells, chromosome aberrations, lymphocyte micronucleus and other results were collected. The whole blood cells and genetic abnormalities of different demographic characteristics of medical radiation workers were compared. And the influencing factors of whole blood cells and genetic abnormalities were analyzed by multivariate logistic regression.Results:The rates of hemoglobin (HGB), chromosome aberration and lymphocyte micronucleus abnormality were the highest in the nuclear medicine group, and the rate of white blood cell (WBC) abnormality in the radiotherapy group was higher than those in other occupational groups, the differences were statistically significant ( P<0.05). The abnormal rates of WBC, HGB and lymphocyte micronucleus in female radiation workers were significantly higher than those in male radiation workers ( P<0.001). The abnormal rates of HGB and lymphocyte micronucleus were statistically different among different working years and different age radiation workers ( P<0.001). And the abnormal rate of platelet (PLT) was statistically different among different working years radiation workers ( P<0.05). The abnormal rate of HGB in radiation workers of different hospital levels was statistically different ( P<0.001). Logistic regression analysis showed that the risk of abnormal WBC and HGB in females radiation workers were 3.048 times and 13.122 times of those in males, respectively ( P<0.001). The abnormal risks of WBC in the 6-20 working years group and >20 working years group were 1.517 times and 1.874 times of that in the ≤5 working years group, respectively ( P<0.05). The abnormal risk of PLT in the >20 working years group was 2.643 times of that in ≤5 working years group ( P<0.05). The abnormal risk of WBC in radiotherapy group and intervention group were 2.407 times and 1.341 times of that in general radiotherapy group, respectively ( P<0.05) . Conclusion:Ionizing radiation has different effects on the whole blood cells and genetic indexes of workers in the nuclear medicine, interventional group and radiotherapy group. The occupational health protection of female radiation workers should be paid attention to.

Hypothyroidism (HT) can arise as a complication of radiotherapy for breast cancer. Despite having a significant impact on patients′ quality of life, HT had always been overlooked by radiotherapists in the past. In recent years, many studies highlighting the protection of the thyroid in the process of radiotherapy for breast cancer have been conducted, achieving valuable conclusion. These studies can serve as a guide for radiotherapists to limit the dose to the thyroid during radiotherapy, thus reducing the incidence of HT.

Objective:To explore the influencing factors of whole blood cells and genetics of medical radiation workers, and provide technical support for improving occupational health management and strengthening radiation protection.Methods:In January 2022, a total of 4180 medical radiation workers who underwent occupational health examination in Gansu Provincial Center for Disease Control and Prevention from January 2020 to December 2021 were collected as the research objects, and the results of demographic characteristics, whole blood cells, chromosome aberrations, lymphocyte micronucleus and other results were collected. The whole blood cells and genetic abnormalities of different demographic characteristics of medical radiation workers were compared. And the influencing factors of whole blood cells and genetic abnormalities were analyzed by multivariate logistic regression.Results:The rates of hemoglobin (HGB), chromosome aberration and lymphocyte micronucleus abnormality were the highest in the nuclear medicine group, and the rate of white blood cell (WBC) abnormality in the radiotherapy group was higher than those in other occupational groups, the differences were statistically significant ( P<0.05). The abnormal rates of WBC, HGB and lymphocyte micronucleus in female radiation workers were significantly higher than those in male radiation workers ( P<0.001). The abnormal rates of HGB and lymphocyte micronucleus were statistically different among different working years and different age radiation workers ( P<0.001). And the abnormal rate of platelet (PLT) was statistically different among different working years radiation workers ( P<0.05). The abnormal rate of HGB in radiation workers of different hospital levels was statistically different ( P<0.001). Logistic regression analysis showed that the risk of abnormal WBC and HGB in females radiation workers were 3.048 times and 13.122 times of those in males, respectively ( P<0.001). The abnormal risks of WBC in the 6-20 working years group and >20 working years group were 1.517 times and 1.874 times of that in the ≤5 working years group, respectively ( P<0.05). The abnormal risk of PLT in the >20 working years group was 2.643 times of that in ≤5 working years group ( P<0.05). The abnormal risk of WBC in radiotherapy group and intervention group were 2.407 times and 1.341 times of that in general radiotherapy group, respectively ( P<0.05) . Conclusion:Ionizing radiation has different effects on the whole blood cells and genetic indexes of workers in the nuclear medicine, interventional group and radiotherapy group. The occupational health protection of female radiation workers should be paid attention to.

Objective: To investigate occupational health status about radiation workers from township hospitals in Gansu, China, and to explore the dose-effect relationship of exposure dose of radiation workers. Methods: A total of 390 X-ray workers from township hospitals in Gansu Province and 450 X-ray workers from the county/district-level hospitals in the county/district where the township hospitals were located were divided into research group and control group. Their workload, radiation protection condition, and occupational health monitoring data were used for impact assessment and risk estimation. Results: The annual workload of radiation workers from township hospitals was 845.33±361.622 people, and that of radiation workers from county/district-level hospitals was 1967.74±762.055 people; there was a significant difference in annual workload between the two groups of subjects (P<0.05) . Indices such as detection rate of lens opacity, detection rate of abnormal platelet count, red blood cell count, and hemoglobin count, micronucleated lymphocyte rate, and chromosome aberration rate were significantly different between the two groups (P<0.05) . Conclusion Radiation workers from township hospitals suffer from certain radiation damage.