Objective:To investigate the causal impact of maternal smoking around birth(MSAB)on off-spring's risk of attention deficit hyperactivity disorder(ADHD),autism spectrum disorder(ASD),bipolar disorder(BD),and major depressive disorder(MDD).Methods:The datasets for MSAB and 4 psychiatric disorders were extracted from genome-wide association studies(GWAS).Mendelian randomization(MR)was employed,using in-verse variance weighting(IVW)as the primary analysis method.Sensitivity analyses and outlier correction were conducted using weighted median(WM),MR-Egger regression,and MR-PRESSO.The results were expressed as odds ratios(OR)and corrected for false discovery rate(FDR).Results:MR analysis showed significant causal re-lationships between MSAB and increased risk of ADHD(OR=5.36,95％CI=2.58-7.63,PFDR=0.003),MDD(OR=1.92,95％CI=1.29-2.88,PFDR=0.003),and BD(OR=6.33,95％CI=1.56-8.73,PFDR=0.013).However,no statistically significant association was found between MSAB and ASD(OR=1.66,95％CI=0.23-5.87,PFDR=0.616).Conclusion:This study suggests a potential causal link between maternal smoking around the time of birth and an increased risk of attention deficit hyperactivity disorder,bipolar disorder,and major depressive disorder in offspring.

Objective:To explore the application strategies and clinical effects of superior gluteal artery perforator tissue flaps in repairing stage Ⅳ pressure ulcers in the sacrococcygeal region.Methods:This study was a retrospective observational study. From July 2019 to April 2024, 89 patients with stage Ⅳ pressure ulcers in the sacrococcygeal region who met the inclusion criteria were admitted to the First Affiliated Hospital of Nanchang University, including 59 males and 30 females, aged 21 to 84 years. There were 89 sacrococcygeal pressure ulcers, with an area of 5.0 cm×4.0 cm-21.0 cm×21.0 cm after debridement. According to the shape, size, and depth of the wounds after debridement, combined with the elasticity and texture of the skin around the wounds, and the principle of minimizing damage to the donor area, the appropriate forms of superior gluteal artery perforator tissue flaps were cut for wound repair in the following three conditions. (1) For wounds with a round shape, an area of 5.0 cm×5.0 cm-21.0 cm×21.0 cm, and a depth of 1.0-3.5 cm, the superior gluteal artery perforator propeller flap or myocutaneous flap, bilobed superior gluteal artery perforator relay flap, and bilateral superior gluteal artery perforator rotational flap were used. (2) For wounds with an oval shape, an area of 5.0 cm×4.0 cm-18.5 cm×10.5 cm, and a depth of 1.0-3.0 cm, the superior gluteal artery perforator propeller flap or myocutaneous flap, unilateral superior gluteal artery perforator propeller flap combined with contralateral superior gluteal artery perforator V-Y advanced flap or keystone flap were used. (3) For wounds with a fusiformis shape, an area of 7.0 cm×4.0 cm-17.5 cm×6.0 cm, and a depth of 1.5-5.0 cm, the unilateral or bilateral superior gluteal artery perforator V-Y advanced flap, superior gluteal artery perforator keystone flap, or superior gluteal artery perforator keystone flap combined with gluteus maximus muscle flap were used. In this group of patients, a total of 40 superior gluteal artery perforator propeller flaps (with an resection area of 11.0 cm×6.0 cm-17.0 cm×11.0 cm), 22 superior gluteal artery perforator propeller myocutaneous flaps (with an resection area of 10.0 cm×5.0 cm-14.0 cm×8.0 cm), 7 bilobed superior gluteal artery perforator relay flaps (with a main flap resection area of 5.5 cm×5.5 cm-18.0 cm×11.5 cm and a side flap resection area of 4.5 cm×3.0 cm-11.0 cm×6.5 cm), 5 bilateral superior gluteal artery perforator rotational flaps (with a total resection area of 20.0 cm×16.0 cm-26.0 cm×21.0 cm on both sides), 14 superior gluteal artery perforator V-Y advanced flaps (with an resection area of 12.0 cm×10.0 cm-18.0 cm×18.0 cm), 13 superior gluteal artery perforator keystone flaps (with an resection area of 13.0 cm×6.5 cm-19.0 cm×18.0 cm), and 3 gluteus maximus muscle flaps (with an resection area of 8.0 cm×3.0 cm-15.0 cm×4.5 cm). The donor area wounds were all directly sutured. The survival of tissue flaps was observed and the incidence rate of delayed wound healing in the reception area was calculated, and wound healing in the donor area was observed. The appearance and texture of tissue flaps and recurrence of pressure ulcers were followed up.Results:After surgery, all bilateral superior gluteal artery perforator rotational flaps, superior gluteal artery perforator V-Y advanced flaps, superior gluteal artery perforator keystone flaps, and gluteus maximus muscle flaps survived well. There were 6 cases of delayed wound healing in the reception area after surgery, with an incidence rate of 6.7% (6/89). Two patients had incision dehiscence in the donor area wounds due to postoperative bleeding, the wounds healed after debridement, vacuum sealing drainage, and dressing change. The wounds in the donor area of the remaining patients healed well. Six patients were lost to follow-up. Eighty-three patients were followed up for 3-48 months, of whom 4 patients died. Among the remaining 79 patients, 3 cases had pressure ulcers recur due to improper nursing, while the rest of the patients had tissue flaps with good appearance and soft texture and no recurrence of pressure ulcers.Conclusions:Based on the characteristics of wound shape, size, and depth after debridement of stage Ⅳ pressure ulcers in the sacrococcygeal region, individualized selection of flap, myocutaneous flap, or a combination of flap and gluteus maximus muscle flap based on the perforating branch of the superior gluteal artery perforator can achieve good clinical repair results. The postoperative tissue flap survived well, with a good appearance, soft texture, and less recurrence of pressure ulcers.

ObjectiveTo establish background data for a 90-day feeding trial of SD rats to ensure the reliability of research data. MethodsBackground data from six independent 90-day feeding trials of SD rats conducted by the National Center for Safety Evaluation of Drugs from 2020 to 2023 were summarized. These studies involved a blank control group of 120 SPF-grade 4-week-old SD rats, with an equal number of males and females, which were only given standard full-nutrient pelleted rat feed. After the quarantine period, the animals were observed for an additional 90 days, followed by intraperitoneal injection of Zoletil (50 mg/mL) for anesthesia, blood sampling, euthanasia, and necropsy. By analyzing the data from the blank control group, a relevant background database for SD rats was established. ResultsBoth male and female rats exhibited steady weight gain, with a more pronounced increase in male rats. Within 90 days, the average body weight of male and female rats increased to over 500 g and 300 g, respectively. Three weeks later, the average daily food intake of male rats stabilized at approximately 25~28 g per rat, while that of female rats remained stable at approximately 16~19 g per rat. The food utilization rate of all animals gradually decreased from the first week of the experiment. In the white blood cell (WBC) differential count results, significant differences were observed in the counts of WBCs, neutrophils (Neut), lymphocytes (Lymph), and monocytes (Mono) between males and females (P<0.001). However, there were no significant differences in the percentages of neutrophil (%Neut), lymphocyte (%Lymph), and monocyte (%Mono) between the sexes (P>0.05). The average red blood cell count (RBC), hemoglobin concentration (HGB), hematocrit (HCT), platelet count (PLT), prothrombin time (PT), and activated partial thromboplastin time (APTT) were higher in male animals than in female animals (P<0.05). The average values of alanine aminotransferase (ALT), aspartate aminotransferase (AST), alkaline phosphatase (ALP), creatine phosphokinase (CK), lactate dehydrogenase (LDH), glucose (GLU), and triglyceride (TG) in male rats were higher than those in female rats (P<0.05). The urinary pH range for male animals was 5.0 to 8.5, while for female animals it was 6.5 to 9.0. The majority of male animals had a urinary specific gravity lower than 1.020, and the majority of female animals had a urinary specific gravity lower than 1.015. The weights of various organs (excluding the adrenal glands and reproductive organs) in male animals were heavier than those in female animals (P<0.001), while the organ/body weight ratios (excluding the kidneys and reproductive organs) of female animals were higher than those of male animals (P<0.001). ConclusionThis study summarizes the background reference ranges for body weight, food intake, hematology, and serum biochemistry indicators in SPF-grade SD rats in the untreated control group from six 90-day feeding trials conducted by the National Center for Safety Evaluation of Drugs. It provides important reference data for related research. By summarizing the background and spontaneous histopathological changes in rats, this study aids in the standardization and normalization of subsequent research, as well as in the evaluation and analysis of abnormal results.

Objective:To investigate the causal impact of maternal smoking around birth(MSAB)on off-spring's risk of attention deficit hyperactivity disorder(ADHD),autism spectrum disorder(ASD),bipolar disorder(BD),and major depressive disorder(MDD).Methods:The datasets for MSAB and 4 psychiatric disorders were extracted from genome-wide association studies(GWAS).Mendelian randomization(MR)was employed,using in-verse variance weighting(IVW)as the primary analysis method.Sensitivity analyses and outlier correction were conducted using weighted median(WM),MR-Egger regression,and MR-PRESSO.The results were expressed as odds ratios(OR)and corrected for false discovery rate(FDR).Results:MR analysis showed significant causal re-lationships between MSAB and increased risk of ADHD(OR=5.36,95％CI=2.58-7.63,PFDR=0.003),MDD(OR=1.92,95％CI=1.29-2.88,PFDR=0.003),and BD(OR=6.33,95％CI=1.56-8.73,PFDR=0.013).However,no statistically significant association was found between MSAB and ASD(OR=1.66,95％CI=0.23-5.87,PFDR=0.616).Conclusion:This study suggests a potential causal link between maternal smoking around the time of birth and an increased risk of attention deficit hyperactivity disorder,bipolar disorder,and major depressive disorder in offspring.

Objective:To explore the application strategies and clinical effects of superior gluteal artery perforator tissue flaps in repairing stage Ⅳ pressure ulcers in the sacrococcygeal region.Methods:This study was a retrospective observational study. From July 2019 to April 2024, 89 patients with stage Ⅳ pressure ulcers in the sacrococcygeal region who met the inclusion criteria were admitted to the First Affiliated Hospital of Nanchang University, including 59 males and 30 females, aged 21 to 84 years. There were 89 sacrococcygeal pressure ulcers, with an area of 5.0 cm×4.0 cm-21.0 cm×21.0 cm after debridement. According to the shape, size, and depth of the wounds after debridement, combined with the elasticity and texture of the skin around the wounds, and the principle of minimizing damage to the donor area, the appropriate forms of superior gluteal artery perforator tissue flaps were cut for wound repair in the following three conditions. (1) For wounds with a round shape, an area of 5.0 cm×5.0 cm-21.0 cm×21.0 cm, and a depth of 1.0-3.5 cm, the superior gluteal artery perforator propeller flap or myocutaneous flap, bilobed superior gluteal artery perforator relay flap, and bilateral superior gluteal artery perforator rotational flap were used. (2) For wounds with an oval shape, an area of 5.0 cm×4.0 cm-18.5 cm×10.5 cm, and a depth of 1.0-3.0 cm, the superior gluteal artery perforator propeller flap or myocutaneous flap, unilateral superior gluteal artery perforator propeller flap combined with contralateral superior gluteal artery perforator V-Y advanced flap or keystone flap were used. (3) For wounds with a fusiformis shape, an area of 7.0 cm×4.0 cm-17.5 cm×6.0 cm, and a depth of 1.5-5.0 cm, the unilateral or bilateral superior gluteal artery perforator V-Y advanced flap, superior gluteal artery perforator keystone flap, or superior gluteal artery perforator keystone flap combined with gluteus maximus muscle flap were used. In this group of patients, a total of 40 superior gluteal artery perforator propeller flaps (with an resection area of 11.0 cm×6.0 cm-17.0 cm×11.0 cm), 22 superior gluteal artery perforator propeller myocutaneous flaps (with an resection area of 10.0 cm×5.0 cm-14.0 cm×8.0 cm), 7 bilobed superior gluteal artery perforator relay flaps (with a main flap resection area of 5.5 cm×5.5 cm-18.0 cm×11.5 cm and a side flap resection area of 4.5 cm×3.0 cm-11.0 cm×6.5 cm), 5 bilateral superior gluteal artery perforator rotational flaps (with a total resection area of 20.0 cm×16.0 cm-26.0 cm×21.0 cm on both sides), 14 superior gluteal artery perforator V-Y advanced flaps (with an resection area of 12.0 cm×10.0 cm-18.0 cm×18.0 cm), 13 superior gluteal artery perforator keystone flaps (with an resection area of 13.0 cm×6.5 cm-19.0 cm×18.0 cm), and 3 gluteus maximus muscle flaps (with an resection area of 8.0 cm×3.0 cm-15.0 cm×4.5 cm). The donor area wounds were all directly sutured. The survival of tissue flaps was observed and the incidence rate of delayed wound healing in the reception area was calculated, and wound healing in the donor area was observed. The appearance and texture of tissue flaps and recurrence of pressure ulcers were followed up.Results:After surgery, all bilateral superior gluteal artery perforator rotational flaps, superior gluteal artery perforator V-Y advanced flaps, superior gluteal artery perforator keystone flaps, and gluteus maximus muscle flaps survived well. There were 6 cases of delayed wound healing in the reception area after surgery, with an incidence rate of 6.7% (6/89). Two patients had incision dehiscence in the donor area wounds due to postoperative bleeding, the wounds healed after debridement, vacuum sealing drainage, and dressing change. The wounds in the donor area of the remaining patients healed well. Six patients were lost to follow-up. Eighty-three patients were followed up for 3-48 months, of whom 4 patients died. Among the remaining 79 patients, 3 cases had pressure ulcers recur due to improper nursing, while the rest of the patients had tissue flaps with good appearance and soft texture and no recurrence of pressure ulcers.Conclusions:Based on the characteristics of wound shape, size, and depth after debridement of stage Ⅳ pressure ulcers in the sacrococcygeal region, individualized selection of flap, myocutaneous flap, or a combination of flap and gluteus maximus muscle flap based on the perforating branch of the superior gluteal artery perforator can achieve good clinical repair results. The postoperative tissue flap survived well, with a good appearance, soft texture, and less recurrence of pressure ulcers.

Objective:To improve the ability of aviation physicians and physical examiners in differential diagnosis of primary angiitis of the central nervous system (PACNS) and the level of aeromedical assessment by exploring the diagnosis and treatment of PACNS.Methods:The clinical diagnosis and treatment of a pilot with PACNS were reported and the related literatures were reviewed.Results:The clinical manifestation of the fighter trainer pilot was numbness of the left finger, and then gradually appeared numbness and weakness of the left face and left upper limb more than 1 month. The initial diagnosis was viral encephalitis and acute disseminated encephalomyelitis and the hormonal shock treatment was ineffective. The final diagnosis was PACNS. The patient′s condition was improved by cyclophosphamide shock treatment. Aeromedical assessment concluded that the pilot was temporarily grounded.Conclusions:Pilot with PACNS is rarely reported and easy to be misdiagnosed due to the clinical and imaging findings are lack of specificity. The aeromedical assessment of PACNS pilots should be individualized according to the severity of illness, type of aircraft and flight duties.

Objective:To improve the ability of aviation physicians and physical examiners in differential diagnosis of primary angiitis of the central nervous system (PACNS) and the level of aeromedical assessment by exploring the diagnosis and treatment of PACNS.Methods:The clinical diagnosis and treatment of a pilot with PACNS were reported and the related literatures were reviewed.Results:The clinical manifestation of the fighter trainer pilot was numbness of the left finger, and then gradually appeared numbness and weakness of the left face and left upper limb more than 1 month. The initial diagnosis was viral encephalitis and acute disseminated encephalomyelitis and the hormonal shock treatment was ineffective. The final diagnosis was PACNS. The patient′s condition was improved by cyclophosphamide shock treatment. Aeromedical assessment concluded that the pilot was temporarily grounded.Conclusions:Pilot with PACNS is rarely reported and easy to be misdiagnosed due to the clinical and imaging findings are lack of specificity. The aeromedical assessment of PACNS pilots should be individualized according to the severity of illness, type of aircraft and flight duties.

Objective:To explore the feasibility and clinical efficacy of reconstruction of the soft tissue defect after keloidectomy and/or cicatricial ulcers excision caused by sternotomy with the 5th intercostal perforator flap of the internal thoracic artery.Methods:From September 2016 to August 2023, 10 patients with sternal keloids and/or sternal scar ulcers caused by sternotomy were treated in the Medical Centre of Burn Plastic Surgery and Wound Repair, the First Affiliated Hospital of Nanchang University. The soft tissue defect after resection reconstructed by the pedicled 5th intercostal perforator flap of the internal thoracic artery. The patients were 7 males and 3 females, aged 17-65 years, with an average age of 43 years. The history of sternal scar was 2-15 years, with an average of 5.5 years. And the sizes of sternal scars were 2.0 cm×6.5 cm-5.5 cm×10.0 cm. After admission, the patients firstly received surgery to remove sternal keloids and/or scar ulcers. The defects of soft tissue were found from 2.5 cm×7.0 cm to 6.0 cm×10.5 cm in size after surgery. Then one-stage reconstructive surgery were performed on all of the patients with a transposition of the pedicled 5th intercostal perforator flap of the internal thoracic artery. Flaps were harvested in surgery at 3.5 cm×7.5 cm-6.0 cm×11.0 cm in size. The donor sites of flaps were pulled and directly sutured. After the surgery, wound healing and flap survival were observed, through regular follow-ups at outpatient clinics, and via internet hospitals or WeChat reviews to monitor the colour and appearance of the flaps, recurrence of keloids and/or ulcers, the appearance of donor sites and the secondary dysfunction of surgery.Results:All incisions healed well after surgery, and all the pedicled 5th intercostal perforator flaps of the internal thoracic artery survived. All 10 patients were included in the postoperative follow-up for a period of 6-31 months, with an average of 15 months. During follow-up, the colour and appearance of the flaps were found good, and the patients were satisfied. There was no recurrence of keloid and/or scar ulcer in the reception sites. Two patients had linear scar hyperplasia at the incision sites over the period of follow-up, due to the failure of adherence to regular scar prevention and treatment after wound healing. Appearances of the donor sites were good without functional impairment.Conclusion:The pedicled 5th intercostal perforator flap of the internal thoracic artery has a better clinical effect in reconstruction of the soft tissue defect after keloidectomy and/or cicatriciad ulcers excision caused by sternotomy and without a postoperative recurrence of a keloid and/or scar ulcer, with a good colour and appearance in the affected area and in a good appearance without a secondary functional impairment at the donor site.

Objective:To understand the current genotype distribution, epidemiological characteristics, and their relationship with pregnancy outcomes in pregnant women with hepatitis C in Nanjing city.Methods:An epidemiological survey method was used to analyze the data of 113 pregnant women with hepatitis C who were successfully genotyped and admitted to Nanjing Second Hospital from January 2018 to December 2023. The comparison of the quantitative data was analyzed by a t-test or rank-sum test between the two groups. The comparison of the enumeration data was analyzed using the χ2 test, adjusted χ2 test, or Fisher's exact probability method between the two groups. Results:A total of six kinds of genotypes (1b, 2a, 3a, 3b, 6a, 6n) were identified in 113 cases. The primary genotype was 1b (accounted for 76.1%), followed by 6, 3, and 2 rare genotypes, while 1 mixed type (type 2 mixed with type 6) and genotypes 4 and 5 were non-identified. The proportion of genotype 1b increased with the extension of the birth cohort, and the difference was statistically significant ( χ2=24.35, P＜0.001). There was a difference in genotyping proportions with educational and employment background ( χ2=14.74, P＜0.001; χ2=19.50, P＜0.001). The proportion of non-1b types increased in populations with low educational backgrounds and unemployment. The proportion of type 1b was higher in those with a history of blood transfusion and hospitalization during infancy ( χ2=5.57, P=0.018; χ2=5.17, P=0.023). The proportion of non-1b type was higher in those with a history of drug abuse ( χ2=22.32, P＜0.001). Normal pregnancy outcomes had no statistically significant difference between genotype 1b and non-1b groups. However, all pregnant women who experienced adverse infant outcomes had genotype 1b. Conclusion:Pregnant women with hepatitis C in Nanjing city are mainly genotype 1b, with genotype 3b<5%, and there is no significant difference in maternal and infant outcomes among different genotype subtypes. Therefore, no testing of genotype for women of childbearing age. However, the focus should be on the management of pregnancy, health education, and postpartum preparation for direct acting antiviral treatment.

Objective:To explore the feasibility and clinical efficacy of reconstruction of the soft tissue defect after keloidectomy and/or cicatricial ulcers excision caused by sternotomy with the 5th intercostal perforator flap of the internal thoracic artery.Methods:From September 2016 to August 2023, 10 patients with sternal keloids and/or sternal scar ulcers caused by sternotomy were treated in the Medical Centre of Burn Plastic Surgery and Wound Repair, the First Affiliated Hospital of Nanchang University. The soft tissue defect after resection reconstructed by the pedicled 5th intercostal perforator flap of the internal thoracic artery. The patients were 7 males and 3 females, aged 17-65 years, with an average age of 43 years. The history of sternal scar was 2-15 years, with an average of 5.5 years. And the sizes of sternal scars were 2.0 cm×6.5 cm-5.5 cm×10.0 cm. After admission, the patients firstly received surgery to remove sternal keloids and/or scar ulcers. The defects of soft tissue were found from 2.5 cm×7.0 cm to 6.0 cm×10.5 cm in size after surgery. Then one-stage reconstructive surgery were performed on all of the patients with a transposition of the pedicled 5th intercostal perforator flap of the internal thoracic artery. Flaps were harvested in surgery at 3.5 cm×7.5 cm-6.0 cm×11.0 cm in size. The donor sites of flaps were pulled and directly sutured. After the surgery, wound healing and flap survival were observed, through regular follow-ups at outpatient clinics, and via internet hospitals or WeChat reviews to monitor the colour and appearance of the flaps, recurrence of keloids and/or ulcers, the appearance of donor sites and the secondary dysfunction of surgery.Results:All incisions healed well after surgery, and all the pedicled 5th intercostal perforator flaps of the internal thoracic artery survived. All 10 patients were included in the postoperative follow-up for a period of 6-31 months, with an average of 15 months. During follow-up, the colour and appearance of the flaps were found good, and the patients were satisfied. There was no recurrence of keloid and/or scar ulcer in the reception sites. Two patients had linear scar hyperplasia at the incision sites over the period of follow-up, due to the failure of adherence to regular scar prevention and treatment after wound healing. Appearances of the donor sites were good without functional impairment.Conclusion:The pedicled 5th intercostal perforator flap of the internal thoracic artery has a better clinical effect in reconstruction of the soft tissue defect after keloidectomy and/or cicatriciad ulcers excision caused by sternotomy and without a postoperative recurrence of a keloid and/or scar ulcer, with a good colour and appearance in the affected area and in a good appearance without a secondary functional impairment at the donor site.