OBJECTIVETo dicuss the application and therapeutic effect of middle-forearm flap based on perforator of ulnar artery for electrical burn wound on the wrist.

METHODSFrom Oct. 2009 to Oct. 2012, 10 cases of electrical burn wounds on the wrist were treated. A line from radialis medial epicondyle of humerus to the interior radialis pisiform bone was connected as flap axis. At the midpoint of the line, Doppler flow imaging meter was used to detect the emerging point of perforator vessel. The flap was designed and harvested. The flap was transferred reversely, with superficial vein retaining which was anastomosed with vein at recipient sites in 3 cases. The wounds in the donor sites were closed directly in 2 cases, and with skin graft in 8 cases.

RESULTSAll the 10 flaps survived completely. 7 cases without vein anastomosis underwent obvious flap edema during 2-4 days postoperatively, which resovled 1 week later. Sub-flap tissue necrosis and infection happened in 2 cases, which healed after dressing and drainage. Patients were followed up for 3-36 months with satisfactory results.

CONCLUSIONSThe middle-forearm flap based on perforator of ulnar artery has a stable and reliable blood supply. It offers a new choice for the electric burn wound on the wrist, especially at the ulnar side.

Burns, Electric ; surgery ; Forearm ; Humans ; Reconstructive Surgical Procedures ; Skin Transplantation ; Surgical Flaps ; blood supply ; transplantation ; Ulnar Artery ; Wrist Injuries ; surgery

Objective: To investigate the use of new types of drugs among HIV/AIDS patients in Ningbo City, Zhejiang Province, so as to provide insights into surveillance and interventions for use of new types of drugs among HIV/AIDS patients. Methods: The HIV/AIDS patients in Ningbo City were randomly sampled from the HIV/AIDS Prevention and Control Information System of Chinese Disease Prevention and Control Information System. Patients' demographics, use of new types of drugs and sexual behaviors were collected using questionnaire surveys. Patients' hair samples were collected, and new types of drugs were determined in hair using liquid chromatography-mass spectrometry (LC-MS). In addition, factors affecting the use of new types of drugs were identified using a multivariable logistic regression model. Results: A total of 254 HIV/AIDS patients were enrolled, including 214 men (84.25%), 31 cases aged under 25 years (12.20%), 66 cases aged 25 to 30 years (25.98%), and 157 cases aged 31 to 75 years (61.81%). There were 30 cases reported previous use of new drugs (11.81%), including 27 cases reported previous use of methamphetamine (90.00%). There were 48 cases tested positive of new types of drugs, with a positive rate of 18.90%, including 44 cases tested positive for methamphetamine (91.67%). Multivariable logistic regression analysis identified age (25 to 30 years, OR=6.926, 95%CI: 1.412-33.969), occupation (students/teachers/cadres/employees/retirees, OR=6.971, 95%CI: 2.123-22.889; housekeeping and housework servants/unemployed, OR=3.356, 95%CI: 1.289-8.739; business/public place servants, OR=2.447, 95%CI: 1.033-4.448) and syphilis infection during recent six months (OR=3.491, 95%CI: 1.664-7.326) as factors affecting the use of new types drugs among HIV/AIDS patients. Conclusions The use of new types of drugs exists in HIV/AIDS patients in Ningbo City. Age, occupation and syphilis infection were associated with the use of new types of drugs among HIV/AIDS patients.

Objective: To investigate the awareness of knowledge about hepatitis C prevention and control among outpatients in Ningbo City, Zhejiang Province, and its influencing factors, so as to provide the evidence for strengthening health education on hepatitis C prevention and control. Methods: Based on sentinel surveillance of hepatitis C, the outpatients aged 15 to 65 years at seven hospitals in Yinzhou District, Cixi City and Xiangshan County of Ningbo City were selected using the convenient sampling method from April to June during 2020 and 2022. Demographic information, knowledge and behaviors related to hepatitis C prevention and control were collected through questionnaire surveys. The influencing factors for knowledge about hepatitis C prevention and control were analyzed using a multivariable logistic regression model. Results: A total of 2 792 participants were surveyed, including 1 157 males (41.44%) and 1 635 females (58.56%). The awareness rate of knowledge about hepatitis C prevention and control was 56.23%, and was lower in knowledge about hepatitis C vaccine and treatment. The awareness rates of knowledge about hepatitis C prevention and control among outpatients from 2020 to 2022 were 47.11%, 53.22% and 70.65%, respectively, showing an upward trend (P<0.05). Multivariable logistic regression analysis showed that participants aged 25 to <50 years (OR=1.358, 95%CI: 1.073-1.719), with an educational level of high school or junior college (OR=1.431, 95%CI: 1.134-1.806) or above junior college (OR=3.728, 95%CI: 2.958-4.699), with household monthly income per capita of 3 000 to <5 000 yuan (OR=1.828, 95%CI: 1.344-2.486) or ≥5 000 yuan (OR=1.858, 95%CI: 1.366-2.526), without a history of invasive treatments such as pedicure in public places (OR=1.287, 95%CI: 1.024-1.618), without a history of contact with family members' blood-contaminated items (OR=2.050, 95%CI: 1.552-2.707), and always using condoms during sexual contacts (OR=1.740, 95%CI: 1.273-2.378) had higher awareness of knowledge about hepatitis C prevention and control. Conclusions The awareness of knowledge about hepatitis C vaccine and treatment among outpatients in Ningbo City needs to be improved. Age, educational level, household monthly income per capita, history of invasive treatments such as pedicure in public places, history of contact with family members' blood-contaminated items and frequency of condom use during sexual contacts are associated with outpatients' awareness of knowledge about hepatitis C prevention and control.

Abstract On 18 May 2021, the Center for Disease Control and Prevention (CDC) of X District in P City, Z Province received a co-investigation of a suspected case of intentional HIV transmission from the public security branch, and conducted epidemiological investigations on Zhao and Wang (both males). Wang was confirmed HIV-positive in 2019. Zhao had unprotected sexual encounters several times with Wang in March 2021 without being informed of Wang's HIV infection. Zhao developed fever, sore throat and other symptoms of acute infection phase on 28 March, and were confirmed HIV positive by the CDC of P City on 11 May. Zhao did not have sex with anyone else before or after having sex with Wang. In addition, Zhao had no history of surgery, blood transfusions, drug use or any other history of HIV exposure. Laboratory tests conducted by the CDC of Z Province showed that the HIV nucleic acid sequences between the samples of Zhao and Wang had a high degree of homology. Combined with the epidemiological investigation, laboratory testing and the evidence from the public security branch, it was concluded that Wang intentionally transmitted HIV to Zhao through unprotected anal sex without disclosing his HIV infection status.

Fifteen patients with sinus-type pressure ulcer in ischial tuberosity were admitted to our unit from April 2013 to April 2017, including 12 patients of unilateral pressure ulcer and 3 patients of bilateral pressure ulcer. The wounds were with infection of different degrees. The outer wound area of pressure ulcer before debridement ranged from 1.5 cm×1.0 cm to 6.0 cm×5.0 cm. Fifteen patients with 15 pressure ulcers were treated with vacuum sealing drainage for 3 to 13 days after debridement and sinus wall resection. Unilateral pressure ulcer was repaired with posterior femoral bilobed flap. One side of bilateral pressure ulcer was repaired with posterior femoral bilobed flap, and the other side was repaired with gluteus maximus muscle flap combined with local flap. The size of flaps ranged from 11.0 cm×7.5 cm to 15.0 cm×10.0 cm. Epidermis of the distal part and edge of the main flap was removed to make complex dermal tissue flap to fill the deep cavity. The other part of the main flap was applied to cover wound, and another flap of the bilobed flap was applied to cover the donor site where main flap was resected. The donor sites were sutured directly. The posterior femoral bilobed flaps in 15 patients survived after operation. Pressure ulcers of 12 patients were healed well. Incision of 2 patients ruptured and healed 15 days after second sewing. One pressure ulcer with infection under the flap healed on 16 days post second completely debridement. During follow-up of 3 to 18 months, flaps were with soft texture, good appearance, and no recurrence.

Objective:To explore the application of carotid ultrasonography in detecting carotid artery lesions of patients with ischemic cerebrovascular disease(ICVD).Methods:Carotid ultrasonography and vascular reactivity(VR)were performed on 82 patients with ICVD and 40 health controls with Color Doppler Ultrasound.The ultrasonic indexes were statistically analyzed. The intima-media thickness(IMT)and the plaque score,the plaque total area and the cerebral blood flow volume of two groups were compared with each other.Results:Vessel diameter (VD),IMT,peak systolic velocity (PSV),end-diastolic velocity (EDV),mean flow velocity(MFV)in patients with severe stenosis of internal carotid artery and common carotid artery in ICVD group were significantly higher than those in control group,and the differences were statistically significant(P <0.01).VR in patients without stenosis and with mild,moderate and severe stenosis was lower than that in the control group(P <0.05).In ICVD group,IMT,carotid plaque score and plaque total area were significantly higher than those in the control group(P <0.01).Conclusions:The detection on degree of carotid lesions in patients with ICVD via carotid ultrasonography was conducive to understanding the status of ICVD,so as to determine the course and the prognosis.It was significant to clinical treatment of ICVD.

Objective:To analyze the use of medicare antiviral drugs (ART) and related factors among HIV-infected people in Ningbo City.Methods:The retrospective data was collected related to infection and treatment of HIV-infected people in ART in Ningbo up to February 2023 through the National Infectious Disease Surveillance System. Binary logistic regression was used to analyze the factors related to medicare antiviral drug use in HIV-infected people. R 4.2.2 software was used for statistical analysis.Results:A total of 6 433 HIV-infected people with ART records were collected, among which 5 783 were in ART. The prevalence of medicare drugs use among people in ART was 24.8% (1 435/5 783, 95% CI: 23.7%-25.9%). Beilun District (8.7%, 43/497) and Fenghua District (5.7%, 14/247) had the lowest level in medicare drugs use. Among people in ART using medicare or out‐of‐pocket drugs, the prevalence of those who had at least one viral load test in the last year (84.9%, 1 352/1 593) was significantly lower than that of those using free drugs (91.4%, 3 829/4 190) ( χ2=52.50, P<0.001). The results of multivariate logistic analysis showed that the factors influencing medicare drug use included low educational level (junior high school and below: a OR=0.24, 95% CI:0.17-0.34), farmer or worker (farmer: a OR=0.60, 95% CI: 0.39-0.91; worker: a OR=0.42, 95% CI: 0.27-0.64), low monthly income (<3 000 Yuan: a OR=0.29, 95% CI: 0.18-0.45), the longer interval time between diagnosis and treatment (≥21 days: a OR=0.47, 95% CI: 0.30-0.74). Conclusions:Significant regional differences on the prevalence of medicare antiviral drugs use in HIV-infected people exist in Ningbo City. Follow-up management program of patients should be improved to strengthen patient compliance to mobilize medicare drug promotion. Meanwhile, publicity of medicare drugs should be strengthened for farmers or workers with low education level and patients with delayed treatment.

Objective To determine the chemical constituents in BSLYT by ultra-high performance liquid chromatography-mass spectrometry(UHPLC-MS/MS),and to establish a high-performance liquid chromatographic fingerprint of the material basis of BSLYT and the content determination of its six main constituents,mononoside,loganin,oroxin A,oroxin B,baicalein and astilbin,providing a reference for the quality control.Methods The mass spectrometry data were used to establish the fingerprints.The content of the main components in the BSLYT samples was calculated by using the external method,and the discrepency between different batches of samples were analyzed by combining with chemometric methods.Results A total of 69 compounds were identified by mass spectrometry,and 13 compounds were identified after comparison with high-performance liquid chromatography(HPLC).The similarity of the baseline characterization profiles of the 15 batches of BSLYT substances was above 0.90,and a total of 27 common peaks were identified.Cluster analysis(CA)classified the substance benchmarks into 2 classes,S1,S2,S5,S8,S9,S13,and S15 were clustered into one class,and S3,S4,S6,S7,S10-S12,and S16 were clustered into one class.By combining PCA and OPLS-DA,the chemical components affecting the baseline classification of the substances were screened and attributed to wood butterfly,cornelian cherry and cocos nigra,respectively.The contents of six components were determined by MICS,which ranged from 0.31%-0.51%,0.12%-0.22%,0.09%-0.19%,0.09%-0.24%,0.07%-0.18%,and 0.08%-0.29%for mononoside,loganin,oroxin A,oroxin B,baicalein and astilbin respectively.Conclusion The fingerprint and multi-indicator content determination method established in this paper are accurate and stable,which provide a basis for the quality control of the material benchmark of Kidney and Pharynx Formula and its related preparations.

The massive water and steam are consumed in the production of cellulose ethanol, which correspondingly results in the significant increase of energy cost, waster water discharge and production cost as well. In this study, the process strategy under extremely low water usage and high solids loading of corn stover was investigated experimentally and computationally. The novel pretreatment technology with zero waste water discharge was developed; in which a unique biodetoxification method using a kerosene fungus strain Amorphotheca resinae ZN1 to degrade the lignocellulose derived inhibitors was applied. With high solids loading of pretreated corn stover, high ethanol titer was achieved in the simultaneous saccharification and fermentation process, and the scale-up principles were studied. Furthermore, the flowsheet simulation of the whole process was carried out with the Aspen plus based physical database, and the integrated process developed was tested in the biorefinery mini-plant. Finally, the core technologies were applied in the cellulose ethanol demonstration plant, which paved a way for the establishment of an energy saving and environment friendly technology of lignocellulose biotransformation with industry application potential.
Bioelectric Energy Sources ; economics ; Biofuels ; analysis ; Biotransformation ; Ethanol ; analysis ; metabolism ; Fungi ; metabolism ; Industrial Microbiology ; methods ; Lignin ; metabolism ; Steam ; Water ; analysis

Background Perfluoroalkyl substances (PFASs) are classified as persistent organic pollutants and have been widely detected in human. Studies investigating the associations between PFASs exposure and estimated glomerular filtration rate (eGFR) yielded inconsistent results, and little is known about the effects of PFASs on eGFR in population without kidney disease. Objective To explore the associations of exposure to PFASs with eGFR and renal dysfunction in population without kidney disease. Methods A total of 609 participants with an eGFR > 60 mL·min⁻¹·1.73 m⁻² and without renal impairment matched for sex and age (1∶1) were recruited from endocrinology department and medical examination center of two hospitals in Tianjin, China, from April 2021 to March 2022. Each subject was interviewed using a structured questionnaire to collect information about sex, age, height, weight, disease history, smoking, alcohol intake, etc. Clinical parameters were obtained from medical record, such as fasting blood glucose (FBG), creatinine (Cre), total cholesterol (TC), and triglyceride (TG). Systolic blood pressure (SBP) and diastolic blood pressure (DBP) were measured by professionals using standard methods. The serum concentrations of PFASs were determined by liquid chromatography/mass spectrometry. Multivariable linear and logistic regression models were performed to evaluate the associations of PFASs exposure with eGFR and renal dysfunction, respectively. Subgroup analyses stratified by age and sex were also performed to assess the modified effects of covariates on the associations of PFASs exposure with eGFR. Results There were 283 males, accounting for 46.5% of the total population. The mean age of the participants was (56.86±12.47) years, and the average body mass index (BMI) was (25.59±3.84) kg·m⁻². Perfluoro-n-octanoic acid (PFOA), perfluorohexane sulfonic acid (PFHxS), perfluorooctane sulfonic acid (PFOS), perfluoro-n-nonanoic acid (PFNA), perfluoro-n-decanoic acid (PFDA), perfluoro-n-undecanoic acid (PFUnDA), sodium 1H, 1H, 2H, 2H-perfluoro-1-octanesulfonate (6:2 FTS), and perfluoropentane sulfonic acid (PFPeS) were positive in more than 75% of serum samples, and the corresponding median concentrations were 9.50, 1.67, 17.22, 1.86, 1.41, 0.78, 0.42, and 0.43 μg·L⁻¹, respectively. After full adjustments of sex, age, BMI, hypertension, diabetes, TC, TG, smoking, and drinking, the linear regression models showed that log₂-transformed PFHxS concentration was negatively associated with eGFR (b=−1.160, 95%CI: −2.280, −0.410). Compared with the lowest exposure tertile, the estimated change of eGFR in the highest tertile for PFHxS was significantly decreased (b=−2.471, 95%CI: −4.574, −0.368). Furthermore, compared with males, the negative association of PFHxS with eGFR was strengthened among females (female: b=−1.281, 95%CI: −2.388, −0.174; male: b=−0.781, 95%CI: −2.823, 1.261, P_interaction=0.043). Conclusion A significant negative association between serum PFHxS and eGFR is observed in the sampled population without kidney disease, and females are more susceptible to PFASs exposure than the males.