1.Role of endoplasmic reticulum stress-mediated DEAD-box helicase 3 X-linked in a mouse model of concanavalin A-induced immune-mediated liver injury
Zhenzhen PAN ; Ling XU ; Xianru ZHU ; Zihao FAN ; Yaling CAO ; Yinkang MO ; Sai YAN ; Feng REN
Journal of Clinical Hepatology 2026;42(1):134-142
ObjectiveTo investigate the role of DEAD-box helicase 3 X-linked (DDX3X) in immune-mediated liver injury (ILI), and to clarify its mechanism by regulating endoplasmic reticulum stress (ERS)-dependent apoptotic pathway and its association with the clinical progression of hepatitis B. MethodsMice were given injection of concanavalin A (ConA) via the caudal vein to establish a model of ILI, PBS (control group) and different concentrations of ConA were injected into the tail vein of hepatocyte-specific DDX3X-knockout mice (DDX3XΔHep and DDX3X-flox mice (DDX3Xfl/fl), respectively.. The log-rank survival analysis, measurement of the serum levels of aspartate aminotransferase (AST) and alanine aminotransferase (ALT), and HE staining of liver tissue were performed to assess liver injury, and qRT-PCR and Western Blot were used to measure the mRNA and protein expression levels of glucose-regulated protein 78 (GRP78), CCAAT/enhancer-binding protein homologous protein (CHOP), and DDX3X in liver tissue. Intraperitoneal injection of 4-phenylbutyric acid (4-PBA, 100 mg/kg) was performed to inhibit ERS. Serum samples (n=30) and liver tissue samples (n=6) were collected from healthy controls, chronic hepatitis B (CHB) patients, and hepatitis B virus-associated liver failure (HBV-LF) patients; ELISA was used to measure the serum level of DDX3X, and qRT-PCR/Western Blot was used to analyze the expression of targets in liver tissue. A one-way analysis of variance was used for comparison of continuous data between multiple groups, and the least significant difference t-test was used for further comparison between two groups. ResultsCompared with the control group of mice, the expression of DDX3X in the liver of mice induced by ConA was significantly increased after liver injury (P<0.05), and hepatocyte-specific DDX3X knockout increased the 72-hour survival rate of mice by 55% (compared with 20% in the DDX3Xfl/fl group), with significant reductions in the serum levels of ALT and AST (P<0.000 1) and the expression levels of the ERS markers GRP78 and CHOP (P<0.05). After ERS was inhibited by 4-PBA, there was alleviation of liver injury (with reductions in ALT and AST, P <0.001) and a reduction in DDX3X expression (P<0.01). The analysis of clinical samples showed that the mRNA and protein expression levels of liver DDX3X in CHB patients and HBV-LF patients were significantly higher than those in healthy controls (all P<0.01), and there was a significant increase in the serum level of DDX3X in HBV-LF patients (P<0.000 1). ConclusionDDX3X exacerbates ILI by regulating the ERS-dependent apoptotic pathway (GRP78/CHOP), and its expression is associated with the progression of hepatitis B. Therefore, it can be used as a potential therapeutic target.
2.Role and mechanism of mitochondrial calcium uniporter in the cytoskeleton of pancreatic ductal epithelial cells in a mouse model of acute pancreatitis
Qiaofeng CHEN ; Qingzi FU ; Huiying YANG ; Junbo HONG ; Liang ZHU ; Zhenzhen YANG ; Guodu TANG ; Shiyu ZHANG
Journal of Clinical Hepatology 2026;42(2):400-408
ObjectiveTo investigate the effect of mitochondrial calcium uniporter (MCU) on the cytoskeleton of pancreatic ductal epithelial cells in a mouse model of acute pancreatitis (AP) induced by caerulein (CAE), to analyze the role of MCU in the development of AP, and to provide a theoretical basis for clinical treatment. MethodsIn the in vivo experiment, wild-type male C57BL6/J mice, aged 4 weeks, were randomly divided into control group and AP group, with 6 mice in each group. The mice in the AP group were given intraperitoneal injection of CAE to establish a model of AP, and those in the control group were given intraperitoneal injection of an equal volume of normal saline. Serum and pancreatic tissue samples were collected after 24 hours of modeling. HE staining was used to observe pancreatic histopathological changes; Western Blot was used to measure the expression levels of MCU, glutathione peroxidase 4 (GPX4), and acyl-CoA synthetase long chain family member 4 (ASCL4); kits were used to measure the serum level of amylase. In the in vitro experiment, the human pancreatic ductal epithelial cell line HPDE6-C7 was co-cultured with CAE for 24 hours to establish an in vitro AP model, and the cells were divided into control group, CAE group, RR (an MCU activity inhibitor) group, CAE+RR group, Fer-1 (an ferroptosis inhibitor) group, CAE+Fer-1 group, Erastin (an ferroptosis inducer) group, and CAE+Erastin group. CCK-8 assay was used to observe the influence of different agents on cell viability; Western Blot was used to measure the expression levels of MCU, GPX4, and ASCL4; immunofluorescence assay was used to measure reactive oxygen species (ROS), actin cytoskeleton, and monolayer permeability; kits were used to measure the concentrations of malondialdehyde (MDA), glutathione (GSH), Fe2+, and total iron. A one-way analysis of variance was used for comparison of continuous data between multiple groups, and the least significant difference t-test was used for comparison between two groups. ResultsIn the in vivo experiment, compared with the control group, the AP group had significant increases in pancreatic histopathological score, the serum level of amylase, and the expression levels of MCU and ASCL4, as well as a significant reduction in the expression of GPX4 (all P<0.05). In the in vitro experiment, compared with the control group, the CAE group had significant increases in the expression levels of MCU and ASCL4, a significant reduction in the expression of GPX4, and significant increases in the concentrations of Fe2+, total iron, and MDA, the green fluorescence intensity of ROS, and monolayer permeability, as well as a significant reduction in the concentration of GSH (all P<0.05), with the presence of actin cytoskeleton disruption. Compared with the CAE group, the CAE+RR group had a significant increase in the expression level of GPX4, a significant reduction in the expression level of ASCL4, and significant reductions in the concentrations of Fe2+, total iron, and MDA, the green fluorescence intensity of ROS, and monolayer permeability and a significant increase in the concentration of GSH (all P<0.05), with alleviation of actin cytoskeleton disruption. Compared with the CAE group, the CAE+Fer-1 group had significant reductions in the concentrations of Fe2+, total iron, and MDA, the green fluorescence intensity of ROS, and monolayer permeability and a significant increase in the concentration of GSH (all P<0.05), with alleviation of actin cytoskeleton disruption. Compared with the CAE group, the CAE+Erastin group had significant increases in the concentrations of Fe2+, total iron, and MDA, the green fluorescence intensity of ROS, and monolayer permeability and a significant reduction in the concentration of GSH (all P<0.05), with aggravation of actin cytoskeleton disruption. ConclusionDuring the onset of AP, MCU mediates oxidative stress-induced ferroptosis and leads to the disruption of the pancreatic ductal epithelial barrier, which may be one of the possible pathogeneses of AP.
3.A Case of Multidisciplinary Treatment for Inflammatory Myofibroblastic Tumor Complicated by ANCA-Associated Vasculitis
Shaoying WANG ; Linyi PENG ; Ke ZHENG ; Zhiwei WANG ; Dachun ZHAO ; Xia ZHANG ; Lin ZHAO ; Wenhui WANG ; Weiqing WANG ; Zhenzhen ZHU ; Jin XU ; Min SHEN
JOURNAL OF RARE DISEASES 2026;5(1):43-51
A 51-year-old male presented with nasal obstruction, followed by progressive hearing loss and blurred vision. Imaging identified space-occupying lesions in the paranasal sinuses, orbits, and paraspinal regions, while laboratory tests confirmed positive anti-proteinase 3 anti-neutrophil cytoplasmic antibody(PR3- ANCA) immunoglobulin G (IgG)and markedly elevated serum IgG4. Despite treatment with corticosteroids, immunosuppressants, and radiotherapy, the patient exhibited steroid dependency with relentless disease progression. Following multidisciplinary consultation, a diagnosis of inflammatory myofibroblastic tumor (IMT) coexisting with ANCA- associated vasculitis (AAV) was favored, though IgG4-related disease remained a critical differential. Ultimately, profound immunosuppression precipitated a severe herpesvirus infection, leading to disseminated intravascular coagulation and multiple organ dysfunction syndrome. This case underscores the rarity and diagnostic complexity of concurrent IMT and AAV, highlights the therapeutic dilemma of balancing primary disease control against fatal opportunistic infections, and emphasizes the critical role of multidisciplinary collaboration in the diagnosis and treatment of complex diseases.
4.Literature analysis of euglycemic diabetic ketoacidosis induced by empagliflozin
Zhenzhen LEI ; Wei RUI ; Yanling SHI ; Jiayue ZHU ; Ying GANG ; Xiaodi SUN ; Hao ZHAN ; Junnan WANG ; Yukun NIU ; Wenxiang ZHANG
China Pharmacy 2026;37(14):1874-1879
OBJECTIVE To investigate the clinical characteristics of euglycemic diabetic ketoacidosis (euDKA) induced by empagliflozin, and provide references for safe medication. METHODS Case reports of euDKA induced by empagliflozin were retrieved and analyzed from PubMed, Web of Science, CNKI, and Wanfang Data. The Naranjo’s scale was adopted to assess the causal relationship between empagliflozin and euDKA. RESULTS A total of 29 patients were enrolled, including 16 males and 13 females,with a median age of 58 years. All patients were diagnosed with type 2 diabetes mellitus; 22 patients had at least one comorbidity. The median time to euDKA onset was 60 days after administration, and 7 cases occurred within 2 weeks of treatment. Perioperative periods,fasting,and low-carbohydrate or ketogenic diets were the main predisposing factors. Common presentations included nausea,vomiting, fatigue, tachypnea,and tachycardia. The causal relationship between empagliflozin and euDKA was assessed as “probable” in all cases. According to adverse reaction severity grading, 13 cases were grade 3 (severe) and 16 cases were grade 4 (life-threatening). All patients discontinued empagliflozin and recovered after corresponding treatment. CONCLUSIONS euDKA is a serious adverse reaction to empagliflozin, which mostly occurs early in treatment. Perioperative periods, fasting, and ketogenic diets are prone to induce euDKA. Elderly patients and those with comorbidities are at higher risk. Risk assessment should be conducted before clinical administration; blood ketones and acid-base monitoring should be strengthened in the early medication period; withhold the drug before elective surgery, avoid prolonged fasting;upon diagnosis, discontinue empagliflozin and initiate intravenous insulin, provide fluid resuscitation promptly, and use other treatments to improve patient prognosis.
5.Effect of Scutellariae Radix Combined with EGFR-TKIs on Non-small Cell Lung Cancer
Yaya YU ; Chenjing LEI ; Zhenzhen XIAO ; Qi MO ; Changju MA ; Lina DING ; Yadong CHEN ; Yanjuan ZHU ; Haibo ZHANG
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(18):106-115
ObjectiveTo investigate the effects of Scutellariae Radix combined with epidermal growth factor receptor-tyrosine kinase inhibitors (EGFR-TKIs) on cell proliferation, apoptosis, cancer stem cell (CSC) marker expression, and metabolism in non-small cell lung cancer (NSCLC) cells. MethodsThe anti-tumor effects of Scutellariae Radix and EGFR-TKIs (gefitinib or osimertinib) in NSCLC cells were evaluated using the cell counting kit-8 (CCK-8) and Annexin V-FITC/propidium iodide (PI) double staining apoptosis assay. The activity of Scutellariae Radix and EGFR-TKIs in three-dimensional (3D) cultures of NSCLC cells was assessed using the CellTiter-Glo® 3D cell viability assay. The mRNA and protein expression levels of CSC markers, sex determining region y box protein 2 (SOX2) and aldehyde dehydrogenase 1 family member A1 (ALDH1A1), were detected by quantitative real-time polymerase chain reaction (Real-time PCR) and Western blot, respectively. Changes in intracellular reactive oxygen species (ROS) levels were detected by ROS staining, and the redox ratio was detected by femtosecond laser labeling free imaging (FLI). ResultsUnder both two-dimensional (2D) and 3D culture conditions, compared with the blank group and EGFR-TKI group, the combination group showed significantly reduced cell viability and increased apoptosis rate (P<0.05). Compared with the EGFR-TKI group, the mRNA and protein levels of CSC markers were significantly downregulated in the combination group (P<0.05). Additionally, the redox ratio was significantly elevated (P<0.05), and ROS levels were also increased in the combination group compared with the EGFR-TKI group. ConclusionIn NSCLC cells, Scutellariae Radix enhances the redox ratio and increases ROS levels, thereby inhibiting the expression of CSC markers and strengthening the anti-tumor effects of EGFR-TKIs. This provides a novel molecular mechanism by which Scutellariae Radix may enhance the sensitivity of targeted therapies.
6.Effectiveness of group skills training intervention on social ability of high functional autism spectrum disorder children
HU Shasha, ZHAO Xiao, ZHU Zhenzhen, LIU Xiaoli, WANG Rong, HU Zhenyu, ZHANG Wenwu
Chinese Journal of School Health 2025;46(2):167-171
Objective:
To evaluate the intervention efficacy of integrated group social skills training on social ability in school age patients with high functioning ASD, so as to provide a reference for improving social skills in children with high functioning ASD.
Methods:
From January 2021 to December 2023, 62 children aged 7-12 with high functioning ASD who visited the Children s Psychiatry Outpatient Department of the Affiliated Kangning Hospital of Ningbo University were recruited, and were randomly divided into a training ( n =31) and a control group ( n =31) by a random number table method. The training group received a 20 week structured group social training program (mental interpretation courses and social courses), while the control group received only conventional treatment. Chinese version of Griffith Empathy Measure Parent Ratings (GEM-PR) and Social Response Scale (SRS) were used to assess the symptoms of social deficits before and after treatment. Emotional face recognition tasks and eye movement trajectories were used to test the characteristics of social visual attention in children with ASD. Group comparison was conducted using t-test and Mann-Whitney U test.
Results:
At baseline, there were no significant differences in GEM-PR score ( t = -1.20 to -0.81), SRS score ( t =-0.36-1.75), emotional face recognition accuracy and reaction time ( t =-0.58-1.85), and eye movement trajectory ( U/t =-1.63-0.29) between the two group ( P >0.05). After intervention, the total GEM-PR score and empathic cognitive factor score of training group [18.00(10.00,24.00),9.00(8.00,13.00)] were significantly higher than those of the control group [12.00(-1.00,18.00),2.00(-2.00,7.00)], and the total SRS score and social cognition, social perception, social communication, social motivation (73.23±14.20, 16.16±2.72, 6.58±2.50, 24.29±5.61, 9.52±3.73) were significantly lower than those of the control group (95.26±15.29, 19.90±2.84, 12.58±2.49,31.94±6.38, 13.74±4.81) ( U/t =-2.38, -4.59; -5.88, -5.29, -9.47, -5.01, -3.87, P <0.05). The overall correct rate of emotional face recognition and the correct rate of angry, fearful and neutral faces recognition in the training group [(81.55±6.62)%,(76.86±12.06)%,(79.61±12.42)%,(94.27±6.26)%] were significantly higher than the control group [(70.55±13.82)%,(62.82±18.77)%,(67.18±18.85)%,(79.60±20.05)%], and the average reaction time [(2 226.70±274.43)ms] was lower than the control group [(2 417.27±324.10)ms] (t=4.00, 3.50, 3.07, 3.89, -2.42, P<0.05). The time to first eye gaze [764.74 (748.64, 793.73) ms] in the training group was significantly lower than that in the control group [810.92 (782.86, 877.42) ms], and the proportion of moderatetohigh intensity attention area in the face [(37.37±1.27)%] was significantly higher than that in the control group [(30.34±1.23)%] (U/t=3.44, 8.89, P<0.05).
Conclusion
Integrated group social training can significantly improve the social communication and empathy ability of high functioning ASD children, increase active attention and recognition ability of faces, and improve mental development of children with ASD.
7.Clinical analysis of Haemophilus influenzae meningitis in children
Zhenzhen DOU ; Hong LI ; Qiang YE ; Wenbin LIU ; Lingyun GUO ; Bing HU ; Tianming CHEN ; Huili HU ; Xin GUO ; Heying CHEN ; Liang ZHU ; Haijuan XIAO ; Gang LIU
Chinese Journal of Pediatrics 2025;63(3):288-292
Objective:To analyze the clinical characteristics and outcomes of Haemophilus influenzae (Hi) meningitis in children. Methods:This is a retrospective case series study. This study included 34 Hi meningitis patients who admitted to Beijing Children′s Hospital, Capital Medical University, from January 1, 2010, to December 31, 2023. Data on clinical presentations, laboratory tests, hearing assessment and outcomes at discharge were collected. Patients were divided into 2 groups according to the outcome at discharge: favorable outcome group and unfavorable outcome group. Mann-Whitney U test and Fisher exact test was used to estimate the risk factors for an unfavorable outcome at discharge. Results:Thirty-four patients were enrolled. There were 16 males and 18 females. The age at onset ranged from 3 months to 12 years. Fever (34 patients (100%)), convulsions (17 patients (50%)), and coma (21 patients (62%)) were the common clinical presentations. Twenty-four patients (71%) developed complications. There were 15 patients (44%) needed treatment in the intensive care unit, 5 patients (15%) received intubation, and 4 patients (12%) had developed shock. The favorable outcome group included 23 patients, and the unfavorable outcome group included 11 patients. Female, patients with limb movement disability, dystonia, ventriculomegaly or hydrocephalus, and a concentration of glucose in the initial cerebrospinal fluid lower than 1 mmol/L were risk factors of unfavorable outcome at discharge (all P<0.05). Among the 23 patients (68%) in favorable outcomes group, 13 patients (57%) had data available on their long-term follow-up results, including 12 patients with favorable long-term outcomes and 1 patient with unfavorable long-term outcome. Among the 11 patients (32%) in unfavorable outcomegroup, 1 patient died, the other 10 patients (91%) had data available on their long-term outcomes. Eight patients had unfavorable long-term outcomes and 2 patients with favorable long-term outcomes. Patients who had unfavorable outcomes at discharge were at a greater risk of experiencing unfavorable long-term outcomes ( P=0.001). Conclusions:It is common for patients with Hi meningitis to have intracranial complications or develop into critical conditions. Patients who have limb movement disability, dystonia, ventriculomegaly or hydrocephalus, and who exhibit a concentration of glucose in the initial cerebrospinal fluid lower than 1 mmol/L tend to have unfavorable outcomes; they need to be assessed for sequelae.
8.Exploration on the mechanism of Lanqin Granules in the treatment of respiratory tract infection based on UPLC-Q-TOF-MS/MS and network pharmacology
Zhenzhen BI ; Gang ZHU ; Xin ZHOU ; Jianfang WANG ; Jianbiao YAO ; Hao LIU
International Journal of Traditional Chinese Medicine 2025;47(3):348-356
Objective:To analyze the main chemical components of Lanqin Granules based on UPLC-Q-TOF-MS/MS; To explore the potential targets, core components and related pathways of Lanqin Granules in the treatment of respiratory tract infection through network pharmacology.Methods:Using UPLC-Q-TOF-MS/MS secondary fragment cleavage information, combined with literature and database, the chemical components of Lanqin Granules were analyzed; the related action targets of Lanqin Granules were obtained by PharmMapper; The related targets of respiratory tract infection were obtained from GeneCards and OMIM databases, and the common targets were selected by intersection with the relevant action targets of Lanqin Granules. The common targets were imported into string database, and the protein interaction data were downloaded and input into Cytoscape 3.7.2 software to obtain hub gene; Go function and KEGG pathway enrichment analysis were carried out on DAVID platform, and chemical components closely related to hub gene were obtained by using the Network Anlyzer plug-in.Results:53 chemical constituents of Lanqin Granules were obtained, including 11 alkaloids, 20 flavonoids, 5 terpenoids, 7 organic esters, 2 amino acids and 8 other compounds. 28 hub genes and 38 related core components were obtained. The results of GO analysis showed that the treatment of respiratory tract infection with Lanqin Granules was related to neutrophil degranulation, negative regulation of apoptosis, protein hydrolysis and other biological processes; extracellular exosomes, cytoplasm, extracellular components and other cellular components; the same protein binding, RNA polymerase Ⅱtranscription factor activity, ligand activated sequence specific DNA binding, protein serine/ threonine/ tyrosine kinase activity and other molecular processes. KEGG analysis results mainly involved cancer pathway, lipid and atherosclerosis, metabolic pathway and other signaling pathways.Conclusion:Lanqin Granules can treat respiratory tract infection through multi-component, multi-target and multi-channel, and play the role of anti-inflammatory, antibacterial and anti-virus.
9.Influencing factors and nursing enlightenment of exercise self-efficacy in patients with inflammatory bowel disease
Yanfang LUO ; Leilei ZHANG ; Lingyun ZHU ; Xiaoyan YU ; Bingyuan LU ; Ying LIU ; Tianhao LIU ; Renjuan SUN ; Zhenzhen SU
Chinese Journal of Nursing 2025;60(11):1315-1322
Objective In this study,the potential profile characteristics of exercise self-efficacy of patients with inflammatory bowel disease(IBD)were explored,and the influencing factors of different types of patients were an-alyzed,so as to provide a reference for nurses to formulate standardized management measures.Methods From June 2023 to May 2024,a total of 342 hospitalized patients with IBD in tertiary A hospital in Wuxi were recruited as research subjects by a convenience sampling method.The General Information Questionnaire,Exercise Self-effica-cy Scale,Exercise Behavioral Stage Distribution Scale and the Social Support Rating Scale were used for investiga-tion.The latent profile analysis was conducted to classify exercise self-efficacy levels,while multiple Logistic regres-sion analysis was utilized to evaluate the influencing factors.Results A total of 320 valid questionnaires were col-lected,and the effective questionnaire recovery rate was 93.57%.The total score of exercise self-efficacy for IBD pa-tients was(64.61±14.83)points.The exercise self-efficacy was classified into 3 latent categories:low efficacy-somatic emotion group(n=64,20.00%),medium efficacy-work conflict group(n=158,49.38%),and high efficacy-social interfer-ence group(n=98,30.62%).Occupation,recurrence times,comorbid chronic diseases,self-assessed economic pressure,and social support level were found to be influencing factors of the latent profile classification of exercise self-effi-cacy in IBD patients(P<0.05).Conclusion The levels of exercise self-efficacy of patients with IBD are significant-ly heterogeneous,and there are several important influencing factors.Nursing staff should formulate targeted inter-vention strategies based on the characteristics of exercise self-efficacy in such patients,so as to improve patients' exercise self-efficacy and the effectiveness of disease rehabilitation.
10.Investigation and management of an intracranial infection event after endoscopic microvascular decompression for treatment of trigeminal neuralgia
Zuozhen LI ; Xiaohui WANG ; Zhenzhen LIU ; Nan JIA ; Yuanqi ZHU
Chinese Journal of Nosocomiology 2025;35(22):3468-3472
OBJECTIVE To investigate the causes of intracranial infection after endoscopic microvascular decom-pression for the treatment of trigeminal neuralgia in a teaching hospital.METHODS An epidemiological survey was conducted on 2 patients(F and Z)who developed intracranial infections after microvascular decompression for trigemi-nal neuralgia in the department of neurosurgery of the Affiliated Hospital of Qingdao University in July 2024.Bacteriolog-ical sampling and culture were carried out for the staff,environment and materials involved in the surgery.The homology of strains between the strains recovered from the patients and those from the environmental was analyzed by means of pulsed-field gel electrophoresis(PFGE)and second-generation illumina sequencing.RESULTS All the three electric ra-zors that were used for preoperative shaving of the patients were found to be contaminated with Enterobacter hor-maechei and Klebsiella pneumoniae.Enterobacter hormaechei strain(E1)and K.pneumoniae strains(K1 to K4)were isolated from the cerebrospinal fluid of patient F.Enterobacter hormaechei strains(E2 and E3)were isolated from the cerebrospinal fluid and wound secretion of patient Z.PFGE analysis showed that the E.hormaechei strains(E1,E2 and E3)isolated from the patients were homologous to the strains of E.hormaechei isolated from the electric shavers(B2-E,B3-E and B4-E),and all these strains were of ST50 type and carried blaACT-15 and 6laCTX-M-3 genes,and that the K.pneumoniae strains(K1-K4)were also homologous to the K.pneumoniae strains isolated from the electric shavers(B2-K,B3-K and B4-K),and all these strains were of ST8 type and car-riedblaSHV-164 and blaTEM-1A genes.CONCLUSIONS The intracranial infections that occur after endoscopic microvas-cular decompression for the treatment of trigeminal neuralgia are related to the preoperative use of electric shavers contaminated with E.hormaechei and K.pneumonia during skin preparation.Therefore,it is necessary to carry out the disinfection of electric shavers that are used for skin preparation and monitor the disinfection effect.


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