Objective To comprehensively investigate the levels of exposure and distribution characteristics of trihalomethanes (THMs) in drinking water in Guangzhou City, and evaluate the health risks of different groups of children, adolescents and adults, and to provide data and evidence for protecting human health and promoting risk control of drinking water. Methods According to the technical requirements of the ^"Standards for Drinking Water Quality Testing Methods^" (GB/T 5750-2023), the concentration of THMs, including trichloromethane (TCM), bromodichloromethane (BDCM), dibromochloromethane (DBCM), and tribromomethane (TBM) in drinking water in Guangzhou City from 2023-2024 were detected. The health risk model recommended by USEPA was used for risk assessment．Results TCM, BDCM and DBCM were detected in the factory water and terminal water, with TCM contributing the most. There was a statistically significant difference (P<0.05) between the wet and dry seasons, and the concentration of TCM in the wet season was higher than that in the dry season. Among the multiple exposure factors, the amount of exposure through drinking water intake was much greater than that through skin absorption. The carcinogenic risk index of THMs for children, adolescents, and adults was 22.0×10^-6, 12.2×10^-6, and 11.4×10^-6, respectively, while the non-carcinogenic risk was less than 1. Conclusion The exposure risks of THMs in children, adolescents, and adults is within an acceptable range, but monitoring needs to be strengthened, with a particular focus on children.

OBJECTIVE: To explore the clinical characteristics and genetic etiology of a child with Osteopathia striata with cranial sclerosis (OSCS) due to variant of AMER1 gene. METHODS: A child presented at the Affiliated Children's Hospital of Zhengzhou University in July 2024 due to growth and development retardation was selected as the study subject. A retrospective study was conducted to collect the child's clinical data. Peripheral blood samples (2 mL each) were collected from the child and her parents, and genomic DNA was extracted for whole exome sequencing (WES). Sanger sequencing was used for the verification of candidate variants. The pathogenicity of variant was rated according to the guidelines from American College of Medical Genetics and Genomics (ACMG). The study has been approved by the Medical Ethics Committee of the Children's Hospital Affiliated to Zhengzhou University (Ethics No.: 2024-108-001). RESULTS: The patient, a 4-year-and-10-month-old girl, presented with global developmental delay, short stature, cleft palate, distinct facial features, and hearing impairment. WES revealed that she has harbored a heterozygous c.790_794dup (p.Cys265Trpfs*19) variant of the AMER1 gene, which was not detected in either parent. Based on the guidelines from ACMG, the gene variant was classified as pathogenic (PVS1 + PS2 + PM2_supporting). As the result of a non-triplet base insertion in the coding region of the AMER1 gene, it has converted a codon originally encoding an amino acid into a stop codon, and led to a truncated protein, causing severe alteration and dysfunction of the protein. CONCLUSION The child was diagnosed with OSCS for clinical features such as global developmental delay, short stature, cleft palate, distinctive facial features, and hearing impairment, for which the de novo heterozygous frameshift variant AMER1: c.790_794dup (p.Cys265Trpfs*19) may be accountable. Above finding has expanded the mutational spectrum of OSCS and provided a basis for genetic counseling and prenatal diagnosis for the family.
Humans ; Female ; Child, Preschool ; Osteosclerosis/genetics* ; Adaptor Proteins, Signal Transducing/genetics* ; Mutation ; Exome Sequencing ; Retrospective Studies ; Tumor Suppressor Proteins

Objective To investigate the safety and feasibility of two-port laparoscopic inner ring closure assisted by extracorporeal suture traction for indirect inguinal hernia with folded peritoneum around inner orifice in children.Methods Between October 2019 and February 2023,a total of 322 children with indirect inguinal hernia underwent two-port laparoscopic inner ring closure,in which 186 cases(292 sides)with folded peritoneum around inner ring orifice were given assistance by extracorporeal suture traction.Under laparoscopic vision in the umbilicus,a needle with a non-absorbable suture was inserted into the abdominal cavity through the outer lower edge of the inner ring,followed by inserted from the extraperitoneal space to the outer edge of the spermatic cord blood vessel.The needle was again inserted at the outer edge of the spermatic cord blood vessel,and the suture tail was gently pulled outside the body.Under direct laparoscopy,the retroperitoneal space near the insertion point was enlarged.Afterwards the suture was crossed the surface of the spermatic cord blood vessel in the retroperitoneal space.In the same way the extracorporeal suture traction was engaged to expand folded peritoneum and enlarge extraperitoneal space for convenience of needle passing through the Doom's triangle,as well as the vas deferens.The inner wall and upper wall peritoneal tissue of the inner ring were continuously sutured under direct visualization.The needle was removed and a knot was made at the initial insertion point,with the inner ring opening being closed.Results In 292 sides,after extracorporeal suture was used to stretch the folded peritoneum,the suture was able to smoothly cross the spermatic cord blood vessels,the Doom's triangle,and the surface of the vas deferens.The operating time for unilateral hernia was(18.5±3.2)min in80 cases and for bilateral hernia was(32.6±5.3)min in106 cases.No intraoperative complications were found and all the patients were discharged from hospital within 6 hours.A total of 122 cases were followed up for 3-18 months(mean,8.5 months)after surgery.No complications such as incision infection,iatrogenic cryptorchidism,or testicular atrophy were observed.There were no recurrent hernia or hydrocele.Conclusion For indirect hernia with folded peritoneum around inner ring orifice,extracorporeal suture traction effectively expands the folded peritoneum,and assists the needle with suture passing through the surface of spermatic cord blood vessels,the Doom's triangle,and the vas deferens in extraperitoneal space,and decreases the difficulty of surgery,presenting better safety and feasibility.

OBJECTIVE: To analyze the clinical phenotype and genetic variant of a child with Snijders Blok-Campeau syndrome (SBCS). METHODS: A child who was diagnosed with SBCS in June 2017 at Henan Children's Hospital was selected as the study subject. Clinical data of the child was collected. Peripheral blood samples of the child and his parents were collected and the extraction of genomic DNA, which was subjected to trio-whole exome sequencing (trio-WES) and genome copy number variation (CNV) analysis. Candidate variant was verified by Sanger sequencing of his pedigree members. RESULTS: The main clinical manifestations of the child have included language delay, intellectual impairment and motor development delay, which were accompanied with facial dysmorphisms (broad forehead, inverted triangular face, sparse eyebrows, widely spaced eyes, narrow palpebral fissures, broad nose bridge, midface hypoplasia, thin upper lip, pointed jaw, low-set ears and posteriorly rotated ears). Trio-WES and Sanger sequencing revealed that the child has harbored a heterozygous splicing variant of the CHD3 gene, namely c.4073-2A>G, for which both of his parents were of wild-type. No pathogenic variant was identified by CNV testing. CONCLUSION The c.4073-2A>G splicing variant of the CHD3 gene probably underlay the SBCS in this patient.
DNA Copy Number Variations ; Heterozygote ; Pedigree ; Phenotype ; RNA Splicing ; Mutation

OBJECTIVE To optimize the preparation technology of the volatile oil microcapsules of Cinnamomi Ramulus and Angelicae Sinensis Radix, characterize the microcapsules prepared after the formulation optimization and study pharmacokinetics characteristics in rats. METHODS Spray drying was used to prepare the volatile oil microcapsules of Cinnamomi Ramulus and Angelicae Sinensis Radix. The preparation process was optimized by Box-Behnken response surface method with the drug loading and encapsulation efficiency as indexes. The microcapsules were characterized by Fourier transform infrared spectroscopy(FT-IR) and scanning electron microscopy(SEM). Blood samples were collected after gastric administration at a dose of 100 mg·kg-1. HPLC method was adopted in the plasma concentration determination, and pharmacokinetics behavior in vivo was also compared. RESULTS The optimal formulation: core material-capsules material ratio was 1∶1.7, capsules material concentration was 10.25%, sodium starch octenyl succinate∶maltodextrin was 3.8∶1, high pressure homogenization pressure was 20 MPa and the inlet temperature of spray drying was 185 ℃. Under the optimized conditions, the drug loading was (18.94±1.09)% and the encapsulation rate was (96.03±2.91)%, respectively. The results of FT-IR and SEM showed that the essential oils had been successfully coated in the capsule wall material. The microcapsules were basically spherical in shape, with concave surface but no obvious cracks. The main pharmacokinetic parameters such as tmax, t1/2, CL, AUC0-t, k10,k12, and k21 of microcapsules had significant difference of the volatile oil(P<0.05 or P<0.01). Microcapsules effectively prolonged the circulation time of volatile oil in the body, promoted the absorption of drugs in the body and the oral bioavailability was enhanced to 2.62 times. CONCLUSION The model established by the Box-Behnken design-response surface method can be used to optimize the formulation of volatile oil microcapsules of Cinnamomi Ramulus and Angelicae Sinensis Radix with great prediction effect. The microcapsules prepared by the optimized process has good drug loading properties and the bioavailability of volatile oil is increased.

Animals ; Inflammation Mediators/metabolism* ; Macrophages/metabolism* ; Mice ; Stromal Interaction Molecule 1/metabolism*

Objective:To explore the relationship between rumination and depression and suicide attempts, and the mediating effect of rumination between depression and suicide attempts in adolescents with depressive disorder.Methods:Clinical interviews and questionnaires were conducted on 331 adolescents aged 11-18 with depressive disorders.Depressive symptoms were assessed with patient health questionnaire-9 (PHQ-9). Rumination was assessed with ruminative responses scale-10 (RRS-10), and Chinese version of the sociality module of MINI5.0 was used to assess suicide.SPSS 23.0 software was applied to descriptive statistics, Chi-square test, t-test, Spearman correlation analysis and hierarchical regression analysis, and the SPSS macro program PROCESS V 3.4 was used for Bootstrap mediating effect. Results:The incidence of suicide attempts in adolescents with depressive disorder was 53.78%, which was significantly higher in girls (59.48%) than that in boys (40.40%), and the difference was significant ( χ2=10.16, P<0.01). In contrast to the non-suicide attempt group, suicide attempt group had higher scores on PHQ-9((11.08±9.26) vs (14.43±7.49), t=-3.634, P<0.01), brooding ((10.76±3.89) vs (12.44±3.87), t=-3.926, P<0.01), reflection ((10.05±3.54) vs (11.20±3.33), t=-3.044, P<0.01) and rumination total score ((20.81±6.78) vs (23.64±6.42), t=-3.898, P<0.01). Regression analysis revealed that girl ( β=0.175, t=3.228, P=0.001), depressive symptoms ( β=0.168, t=3.082, P=0.002), rumination ( β=0.138, t=2.364, P=0.019) were risk factors for suicide attempts.Rumination played a complete mediating effect between depressive symptoms and suicide attempts (effect value=0.013, 95% CI=0.003-0.027). Depression symptoms significantly and positively predicted rumination ( P<0.01), and rumination significantly and positively predicted suicide attempts ( P<0.05). Conclusion:The incidence of suicide attempts was high in adolescents with depressive disorders.Depressive symptoms affect suicide attempts mainly through rumination.Clinicians should assess the rumination of adolescents with depressive disorders.In addition, clinicians should implement concurrent psychotherapy to adjust the cognitive response and reduce rumination, in order to improve the mental health and reduce suicide attempts.

Objective:To investigate the incidence, risk factors and early prognosis of acute kidney injury (AKI) after heart valve surgery in adults, and to provide evidence for the early prevention and treatment of AKI after heart valve surgery.Methods:Clinical data of patients undergoing heart valve surgery from January 2016 to March 2017 were collected retrospectively. Early postoperative AKI was diagnosed and staged according to Kidney Disease Improving Global Outcomes (KDIGO) clinical guidelines for AKI. Patients were divided into AKI group and non-AKI group according to whether AKI occurred within 48 hours after surgery, and the differences in clinical indexes between the two groups were compared and analyzed. Influencing factors for early postoperative AKI were screened by stepwise multivariate logistic regression.Results:A total of 600 patients were enrolled, including 197 patients in the AKI group and 403 patients in the non-AKI group. The incidence of AKI was 32.83%. In the non-AKI and AKI groups, proportion of renal replacement therapy (RRT) during hospitalization, mechanical ventilation time, intensive care unit (ICU) time and proportion of hospital mortality were different (all P<0.001). In the AKI group, 160 patients (81.22%) were in stage I, 33 patients (16.75%) were in stage Ⅱ, and 4 patients (2.03%) were in stage Ⅲ. The proportion of patients receiving RRT, mechanical ventilation time, ICU time, hospital mortality were also different in patients with AKI of different stages (all P<0.05). Logistic regression analysis results showed that males, body mass index≥24.0 kg/m 2, previous history of cardiac surgery, baseline serum creatinine >115 mmol/L, albumin<35 g/L, aortic occlusion time (AOT)>90 min, blood glucose in ICU after operation>11.1 mmol/L, the difference between the highest blood glucose within 48 hours after the operation and the blood glucose at 0 h after the operation≥2 mmol/L, blood lactic acid in ICU after operation>4 mmol/L and maximum vasoactive drug score within 48 hours after surgery>9 were independent influencing factors for early AKI (all P<0.05). Conclusions:The incidence of AKI within 48 hours after heart valve surgery is over 30%. The independent influencing factors include male, overweight/obesity, previous cardiac surgery, preoperative renal insufficiency, hypoproteinemia, long duration of AOT, post-operative stress hyperglycemia, fluctuating blood glucose levels wildly, hyperlactacidemia, and using more vasoactive drugs. AKI after cardiac surgery affects the early prognosis of patients, the later of the stage leads to the worse prognosis.

In recent years, the IVD industry has developed rapidly based on the increasing market demand, and plays an important role in disease prevention, clinical diagnosis, health monitoring and guiding treatment. Therefore, followed quality and safety issues are highly concerned. The unique advantages of blockchain technology, decentralization, distrust and non-tampering, can write into trusted node data in every link covering production, circulation and usage of IVD reagents, and establish a distributed ledger with full backup, which makes the anti-conterfeiting and traceability for IVD reagents possible. We discuss whole process intelligent tracing system for IVD reagents based on blockchain technology. Through the strong mechanism of pre-supervision and post-punishment, the source of reagents can be traced, quality and responsibility can be investigated, and the medical inspection quality and diagnostic safety can be guarded.
Blockchain ; Indicators and Reagents ; Reagent Kits, Diagnostic ; Technology