Objective To select the optimum condition for the determination of formaldehyde in the car and to understand the formaldehyde pollution situation,dynamic change law and the influence factors.Methods The national standard method,acetyl acetone spectrophotometer,was used to determine formaldehyde.The investigated cars were the ones which left the factory for one month,three months,six months and one year.The sampling time,rate of flow and coloration time were determined.The influence of temperature and ventilation on the formaldehyde content in the car was analyzed.Results The formaldehyde content in the car was influenced by the temperature,ventilation,date of production and the type of the car.The optimum conditions for the determination of formaldehyde in the car were as follows,10 min of sampling time,0.3 L/min of sampling flow rate and 3 min of coloration time.Conclusion Ventilation is an effective measure to reduce the formaldehyde content in the car.Higher temperature is good for the release of formaldehyde.The formaldehyde content in the car will reach the standard limit in one year after left factory.

Objective Telomerase reverse transcriptase (TERT) participates in pathologic processes of many ischemic damages.It also plays an important role in ischemic brain damage.There are a lot of activation mechanisms of TERT after cerebral ischemia.At present,the hypoxia-inducible factor-1 has been more clearly studied.The protective effect of TERT in ischemic brain damage may be associated with anti-apoptosis,promoting cell survival,promoting angiogenesis,and protecting mitochondria.

To understand the present application of gene chip in ischemic brain damage,investigate the application value and the future trends of gene chip technology,the literatures on the application of gene chip in the research of all kinds of ischemic brain damage in the database including MEDLINE,EMBASE,CNKI and VIP were reviewed and comprehensively analyzed.Literatures showed that many differential expressed genes including the significant regulating genes in the pathomechanism and some new neuroprotective genes were found during the application in the research of brain damage including global ischemia,focal cerebral ischemia,and hypoxic ischemic brain damage.Therefore,gene chip has manifested its great application value in the research of ischemic brain damage and deserves a further investigation.

Objective To study the effect of La on antioxidase activity and ROS content in crucian liver stressed by cadmium.Methods The crucian were randomly divided into the control group, the 0.5 mg/L Cd2+exposed group and the low(0.5 mg/L Cd2++0.25 mg/L La3+),moderate(0.5 mg/L Cd2++0.5 mg/L La3+),high(0.5 mg/L Cd2++1 mg/L La3+)La3+ intervention groups.The activity of SOD,CAT and ROS activity in crucian liver was detected on the first day, the third day and the fifth day.Results The CAT and SOD activity in the Cd2+exposed group was higher than that in the control(P

The inflammatory response is an essential role of innate immune cells such as neutrophils, which plays an important role in the occurrence and development of inflammatory diseases. Neutrophil extracellular traps (NETs) are responsible for killing microorganisms and inducing the inflammatory response. We review the function of NETs in inflammatory diseases based on research publications since 2016. In addition, the ability of drugs that target NETs to ameliorate inflammation-related diseases is summarized. This review suggests a new strategy of targeting NETs for the treatment of inflammation-related diseases.

AIM: To investigate the effect of compound rhubarb preparation (Kintop) in preventing obesity in rats and its probable mechanism involved. METHODS: Twenty-six newborn SD rats were randomly grouped as rhubarb preparation plus high-energy forage group( n= 8), high-energy forage control group( n= 8) and ordinary forage control group( n= 10). The rats in rhubarb preparation plus high-energy forage group and high-energy forage control group were fed with high-energy forage and those in ordinary forage control group were fed with ordinary forage. The rats in rhubarb preparation plus high-energy forage group were administered by compound rhubarb preparation (40 mg?100 g -1 body weight?d -1 ) from 9th to 17th week. The dynamic changes in body weight, celiac fat weight and adipocytes size were measured. Immunohistochemical analysis of leptin in celiac adipocytes (ABC method) and measurement of serum leptin level (RID method) were performed. RESULTS: The body weight and the wet weights of celiac fat were lower, their adipocytes were smaller and immunohistochemical stainings of leptin were weaker in rhubarb preparation plus high-energy forage group than those in high-energy forage control group. There was an obvious positive correlation between the expression of leptin and celiac fat tissue weight( r= 0.8663, P

Objective: To investigate the risk factors associated with thyroid cartilage invasion in laryngeal carcinoma, and to analyze the efficacy of tumor volume based on dual-energy CT (DECT) derived iodine overlay image for diagnosing thyroid cartilage invasion. Methods: Totally 108 patients with laryngeal squamous cell carcinoma confirmed by pathology were retrospectively analyzed. The patients were divided into thyroid cartilage invasion group (n=49) and non-invasion group (n=59). The clinic data and the tumor volume based on DECT derived iodine overlay image were compared. The risk factors related to thyroid cartilage invasion in laryngeal carcinoma were analyzed using binary Logistic regression, and the efficacy of each risk factor in diagnosing thyroid cartilage invasion was further analyzed. Results: No significant difference in gender, age, disease duration and tumor differentiation between thyroid cartilage invasion group and non-invasion group (all P>0.05), while the clinical type of tumor, anterior commissure involvement and tumor volume were significantly different between the two groups (all P<0.01). The Logistic regression analysis showed that tumor volume based on iodine overlay image (P<0.01) and anterior commissure involvement (P=0.03) were risk factors of thyroid cartilage invasion. Taking the tumor volume=3.91 cm3 as the cutoff value, the sensitivity and specificity for the diagnosis of thyroid cartilage invasion were 93.90% and 89.80%, with the Youden index of 0.84 and AUC of 0.97 (95%CI [0.94, 0.99], P<0.01), respectively. Conclusion: Tumor volume based on DECT derived iodine map and anterior commissure invasion are risk factors for thyroid cartilage invasion in laryngeal carcinoma. Tumor volume based on DECT derived iodine map can be used to diagnose thyroid cartilage invasion.

Objective To introduce the improvement of the flap from the dorsal site of the index in the application of treatment in the thumb web contracture. Methods Apply improved first dorsal metacarpal flap for 111 cases of patients of the thumb web contracture releasing. The original island or tongue-shaped flaps was modified to be the local flap transfer to the thumb web. Surgical method simplified. Before thumb web contracture was released, the flap was taken from ulnar aspect to radial aspect on the dorsum of the index. The flap was transferred to cover the soft tissue defect on the first web space following the contracture releasing. Flap donor area was closed by split-thickness skin graft. Results One hundred and eleven cases of flaps survived. After the 3-18 months (mean follow-up of 8.5 months), the local appearance, thumb function recovered well for 94.6 percent. Conclusion Improved first dorsal metacarpal flap is effective methods in thumb web contracture releasing.

Objective: To explore the value of dual-energy CT in detection of thyroid cartilage invasion of laryngeal carcinoma. Methods: Totally 106 patients with laryngeal carcinoma underwent preoperative dual-energy CT enhanced scan. Taken pathology as the gold standard, the diagnostic value of dual-energy CT derived weighted-average image and iodine overlay image combined with weighted-average image in detection of thyroid cartilage invasion were compared. And the objective parameters (the normalized iodine concentration [NIC] and the slope of spectral Hounsfield unit curve [λHU] of the invaded thyroid cartilage and contralateral normal non-ossified thyroid cartilage in arterial phase) were measured to analyze the effectiveness of dual-energy CT derived quantitative parameters in differentiating invaded thyroid cartilage and normal non-ossified thyroid cartilage. Results: Among 106 patients, thyroid cartilage invasion was found in 40 patients. The sensitivity, specificity and accuracy of weighted-average image in diagnosing thyroid cartilage invasion was 75.00% (30/40), 83.33% (55/66) and 80.19% (85/106), while of iodine overlay image combined with weighted-average image was 87.50% (35/40), 95.45% (63/66) and 92.45% (98/106), respectively. NIC and λHU of invaded thyroid cartilage was 0.16±0.05 and 1.92±0.39, respectively, both higher than those of the contralateral normal non-ossified thyroid cartilage (-0.01±0.02, 0.19±0.06; both P<0.05). The critical values of NIC and λHU for distinguishing invaded thyroid cartilage and normal un-ossified thyroid cartilage was 0.05 and 0.71, the AUC were both 0.98, and the sensitivity was 97.50% and 92.50%, the specificity was 92.50% and 97.50%, respectively. Conclusion: NIC and λHU in arterial phase have promising potential in distinguishing thyroid cartilage invasion of laryngeal carcinoma from normal non-ossified thyroid cartilage.

Hemiplegics after stroke are often disabled in sit-to-stand(STS).This article discussed the biomechanics of STS in the hemiplegic stroke patients,in terms of kinematics,kinetics and surface electromyography,and the rehabilitation for the stroke patients with STS dysfunction.It was found that the stability,duration,symmetry of support and degree and se-quence of muscular activation were different when the patients finished the STS task in three foot positions of natural, symmetrical and unaffected foot behind.The early STS rehabilitation training or other rehabilitation may improve the function of the hemiplegic lower extremity to prevent falls and apraxia.