Efficacy and Safety of Orally and Intravenously Administration of Tranexamic Acid in Patients with Elderly Femoral Neck Fracture.

OBJECTIVE: For elderly femoral neck fracture patients, anemia is one of the most common complications, increasing the risk of postoperative adverse events. Tranexamic acid (TXA) has been widely applied to the perioperative blood management. However, the optimal route of TXA administration in elderly femoral neck fracture remains unclear. The aim of this study is to evaluate the efficacy and safety of oral and intravenous (IV) application of TXA in elderly patients with femoral neck fracture undergoing total hip arthroplasty (THA) and hemiarthroplasty (HA). METHODS: All elderly patients aged over 65 years old diagnosed with femoral neck fracture admitted to the trauma orthopedics from August 1, 2020 to February 28, 2022 were enrolled in this prospective cohort study. Participants were divided into three groups: oral group: TXA 2g orally 2 h before incision; IV group: intravenous infusion of TXA 1g 15 min before incision; and control group: usual hemostatic method. The primary outcomes were total blood loss, allogeneic transfusion rate, and postoperative thromboembolic events. SPSS 23.0 (IBM, Armonk, NY, USA) was used for statistical analysis, and p ≤ 0.05 was considered statistically significant. RESULTS: A total of 100 patients were enrolled, including 32 cases in the oral group, 34 cases in the IV group and 34 cases in the control group. Compared with the control group, the total perioperative blood loss in the oral and IV groups was significantly decreased (763.92 ± 358.64 mL vs 744.62 ± 306.88 mL vs 1250.60 ± 563.37 mL, p = 0.048). No significant difference was identified between the oral and IV groups (p = 0.970). The rate of allogeneic transfusion was lower in the oral and IV groups than in the control group, but the difference had no statistical significant (6 vs 5 vs 12, p = 0.108), However, subgroup analysis showed that the IV and oral groups in patients who underwent THA have significant lower transfusion rate compared with the control group (1 vs 3 vs 7, p = 0.02). During 6 months follow-up, no thromboembolic events were identified. Two patients (one from the oral group and one from the control group) died of respiratory failure. The cost of blood management from the oral group was significantly lower than IV (p < 0.001) and control groups (p = 0.009). CONCLUSION: Elderly patients with femoral neck fracture undergoing THA can benefit from both IV and oral administration of tranexamic acid. The results of these two administration routes are similar in safety and effectiveness. A similar tendency was observed in patients undergoing HA. Oral TXA is more cost-benefit compared with intravenous applications.

Ameliorative effects of zinc and vitamin E against phthalates-induced reproductive toxicity in male rats.

OBJECTIVE: Phthalates (PEs) could cause reproductive harm to males. A mixture of three widely used PEs (MPEs) was used to investigate the ameliorative effects of zinc (Zn) and vitamin E (VE) against male reproductive toxicity. METHODS: Fifty male SD rats were randomly divided into five groups (n = 10). Rats in MPEs group were orally treated with 160 mg/kg/d MPEs, while rats in MPEs combined Zn and/or VE groups were treated with 160 mg/kg/d MPEs plus 25 mg/kg/d Zn and/or 25 mg/kg/d VE. After intervention for 70 days, it's was measured of male reproductive organs' weight, histopathological observation of sperms and testes, serum hormones, PIWI proteins and steroidogenic proteins. RESULTS: Compared with control, anogenital distance, testes weight, epididymides weight, and sex hormones were significantly decreased, while the sperm malformation rate was markedly increased in MPEs group (p < .05); the testicular tissues were injured in MPEs group with disordered and decreased spermatids, and arrested spermatogenesis. PIWIL1, PIWIL2, StAR, CYP11A1 and CYP19A1 were down-regulated in MPEs group (p < .05). However, the alterations of these parameters were restored in MPEs combined Zn and/or VE groups (p < .05). CONCLUSION: Zn and/or VE improved steroid hormone metabolism, and inhibited MPEs' male reproductive toxicity.

Long-term exposure to the mixture of phthalates induced male reproductive toxicity in rats and the alleviative effects of quercetin.

Phthalates (PEs), such as di(2-ethylhexyl) phthalate (DEHP), dibutyl phthalate (DBP) and butyl benzyl phthalate (BBP) could cause reproductive and developmental toxicities, while human beings are increasingly exposed to them at low-doses. Phytochemical quercetin (Que) is a flavonoid that has estrogenic effect, anti-inflammatory and anti-oxidant effects. This study was conducted to assess the alleviative effect of Que. on male reproductive toxicity induced by the mixture of three commonly used PEs (MPEs) at low-dose in rats, and explore the underlying mechanism. Male rats were treated with MPEs (16 mg/kg/day) and/or Que. (50 mg/kg/d) for 91 days. The results showed that MPEs exposure caused male reproductive injuries, such as decreased serum sex hormones levels, abnormal testicular pathological structure, increased abnormal sperm rate and changed expressions of PIWIL1 and PIWIL2. Furthermore, MPEs also changed the expression of steroidogenic proteins in steroid hormone metabolism, including StAR, CYP11A1, CYP17A1, 17ß-HSD, CYP19A1. However, the alterations of these parameters were reversed by Que. MPEs caused male reproductive injuries in rats; Que. inhibited MPEs' male reproductive toxicity, which might relate to the improvement of testosterone biosynthesis.

Efficacy and safety of tranexamic acid in elderly patients with femoral neck fracture treated with hip arthroplasty: A systematic review and meta-analysis.

BACKGROUND: Elderly patients with femoral neck fracture have high perioperative blood loss according to the trauma and hip arthroplasty surgery. Tranexamic acid is a fibrinolytic inhibitor and has been widely used in hip fracture patients to against perioperative anemia. The aim of the present meta-analysis was to evaluate the efficacy and safety of Tranexamic acid (TXA) in elderly patients with femoral neck fracture undergoing hip arthroplasty. METHODS: We performed search using Pubmed, EMBASE, Cochrane Reviews, and Web of Science databases to identify all relevant research studies published from inception to June 2022. Randomized controlled studies and high-quality cohort studies that reported the perioperative use of TXA in patients with femoral neck fractures treated with arthroplasty, and made a comparison with the control group were included. Meta-analysis was performed using Review Manager 5.3 to assess the efficacy and safety of TXA. Subgroup analysis was conducted to further investigate the impact caused by surgery types and administration routes on the efficacy and safety outcomes. RESULTS: Five randomized controlled trials (RCTs) and eight cohort studies published from January 2015 to June 2022 were included in this meta-analysis. The results showed significant reductions in the rate of allogeneic blood transfusion, total blood loss (TBL) and postoperative hemoglobin (Hb) drop in the TXA group compared with the control group, while no significant difference was found in the intraoperative blood loss, postoperative drainage, hospital length of stay (LOS), re-admission rate, and wound complications between the two groups. The incidence of thromboembolic events and mortality showed no significant difference. Subgroup analysis indicated that surgery types and administration routes did not change the overall tendency. CONCLUSION: The current evidence shows that both intravascular administration (IV) and topical administration of TXA can significantly decrease the perioperative transfusion rate and TBL without increasing the risk of thromboembolic complications in elderly patients with femoral neck fracture.

Impact of uncertainty induced by fatality function on future tropical cyclone risk assessment.

Tropical cyclones (TCs) are among the deadliest extreme events occurring under a warming climate. Future TC risk assessment depend on TC projection from climate models and impact function relating TC to its possible consequence. Few studies have explored the uncertainty of impact function in future TC risk assessment compared to uncertainty in future TC characteristics. In this study, we investigate the uncertainty in TC fatality risk assessment induced by geographic and TC category-dependence of fatality function. We focus on all provinces in the mainland of China with historically recorded TC-induced fatalities and examine their TC fatality risks by assessing the difference in the annual average fatalities between current and future climate conditions. Synthetic TCs derived from four climate models and fatality functions parameterized from three grouped historical TC disaster datasets are used to observe the uncertainty induced by climate model and fatality function. Results show that the changes in the TC frequency, wind, TC-induced rainfall intensity, and exposure due to climate change in each province are dependent on the climate models. And the changes in the annual average fatality of each province are dependent on both the climate models and fatality functions. Climate models play a dominant role in determining the spatial pattern of future risk, while the fatality functions can alter the direction and magnitude of the risk change for certain provinces. Our results highlight the role of fatality function in detecting future TC risk under climate change, and inspire further TC impact studies that consider the heterogeneity of both climate conditions and geographical locations.

Acupuncture Enhances Signals at Sensitized Acupoints to Elevate Pressure Pain Threshold in Knee Osteoarthritis Patients.

OBJECTIVE: To observe the pressure pain threshold (PPT), skin conductance (SC) and blood perfusion (BP) of the sensitized acupoints in patients with knee osteoarthritis (KOA), and explore the mechanism of acupuncture at the sensitized acupoints for treating diseases. METHODS: Eleven healthy subjects and 11 unilateral KOA patients were recruited from July 2020 to March 2021 in this study. The PPT, SC and BP of control acupoints in healthy controls, and non-sensitized and sensitized acupoints in KOA patients were measured and compared between baseline and after manual acupuncture (MA) treatment. RESULTS: Before MA treatment, lower PPT was observed at the sensitized acupoints compared with non-sensitized and control acupoints (P<0.05). After MA treatment, PPT at the sensitized acupoints increased significantly in KOA patients (P<0.05). Before MA treatment, there was no statistical difference in SC and BP among control, non-sensitized and sensitized acupoints (P>0.05). Compared with the control and non-sensitized acupoints, there were significant increases of SC and BP in sensitized acupoints of KOA patients after MA treatment (P<0.05 or P<0.01). CONCLUSION: MA at sensitized acupoints could elevate PPT of KOA patients, which may be associated with the increment of SC and BP.

A cross-sectional study of Chinese women facial skin status with environmental factors and individual lifestyles.

Geographical, environmental and pollution conditions affect facial skin health, but their effects on skin appearance have not been elucidated. This study aimed to describe the skin barrier and skin tone characteristics of Chinese subjects according to lifestyle and environmental conditions using in vitro measurements. In total, 1092 women aged 22-42 years were recruited from 7 representative Chinese cities. Eight skin parameters (hydration, sebum, pH, transdermal water loss, individual type angle, melanin index, erythema index, yellowness) were measured using noninvasive instruments; individual lifestyle data were also collected. Data on four meteorological factors (air temperature, relative humidity, sunshine duration, wind speed) and seven air pollution indicators (air quality index, fine particulate matter, breathable particulate matter, sulfur dioxide, nitrogen dioxide, carbon monoxide and ozone) were collected in each city from the China Meteorological Administration. Facial skin characteristics differed significantly between cities. Facial skin barrier characteristics and skin tones showed regional differences, with a better skin barrier associated with the western region, as indicated by high skin hydration and sebum secretion and a low pH value. According to the value of transdermal water loss, lighter and darker skin tones were found in the western and southern regions, respectively. Environmental conditions affected facial skin status. Air pollution induced facial skin issues, with fine particulate matter and nitrogen dioxide contributing the most. Individual lifestyles affected the facial skin barrier and skin tone.

Oral versus intravenous tranexamic acid in elderly patients with intertrochanteric fracture undergoing proximal femur intramedullary nailing: A prospective cohort study.

Objective: To investigate and compare the efficacy and safety of intravenous and oral application of tranexamic acid (TXA) in geriatric patients undergoing intertrochanteric fracture surgeries. Methods: All patients with intertrochanteric fracture admitted to the trauma center of the Zhongda hospital were selected after January 1st, 2020. The final patients were divided into three groups. Oral group: 2 â€‹g oral TXA 2 â€‹h preoperatively; intravenous group: 15 â€‹mg/kg intravenous TXA before incision; control group: no intervention. The main outcome measures were blood transfusion rate and total blood loss. Secondary outcomes include intraoperative blood loss, postoperative blood loss, perioperative blood transfusion volumes, length of hospital stay, thromboembolism events and other adverse events. Results: From January 1, 2020 to December 31, 2020, 124 patients with intertrochanteric fracture were enrolled. According to the inclusion and exclusion criteria, 105 patients were included, including 32 patients in the oral group, 36 patients in the intravenous group and 37 patients in the control group. The demographic characteristics of each group were similar. The blood transfusion rate in the control group was significantly more than that in the experimental group (64.9% vs 40.6% vs 36.1%, P â€‹= â€‹0.041). There was no significant difference between the oral group and the intravenous group (P â€‹= â€‹0.704). The total blood loss of the oral group and the intravenous group were less than the control group (990.29 â€‹± â€‹250.19 â€‹ml vs 997.47 â€‹± â€‹452.34 â€‹ml vs 1408.54 â€‹± â€‹461.74 â€‹ml), the difference was statistically significant (P â€‹= â€‹0.001), and there was no significant difference between the intravenous group and the oral group (P â€‹= â€‹0.459). The perioperative blood transfusion volumes of the oral group and the intravenous group were less than the control group (250.00 â€‹± â€‹198.62 â€‹ml vs 227.78 â€‹± â€‹179.27 â€‹ml vs 367.57 â€‹± â€‹323.90 â€‹ml), the difference was statistically significant (P â€‹= â€‹0.001), and there was no significant difference between the intravenous group and the oral group (P â€‹= â€‹0.832). During hospitalization and follow-up, there were no thromboembolism events such as deep vein thrombosis and pulmonary embolism. Conclusion: It is safe and effective to use TXA intravenously and orally in elderly patients with intertrochanteric fracture. The results of the two methods are similar in safety and effectiveness. Oral TXA is recommended because of its cost-benefit superiority and its ease of administration. The translational potential of this article: The result of this prospective cohort study shows that the utilization of oral TXA in elderly patients with intertrochanteric fracture undergoing proximal femur intramedullary nailing possesses great potential in reducing blood loss and cost-benefit superiority.

Acupuncture mechanism studies employing task-based fMRI: a scoping review protocol.

BACKGROUND: Acupuncture is a widely used alternative and complementary therapy. Functional magnetic resonance imaging (fMRI) is an important technique to explore the underlying mechanism of acupuncture, and the task-based fMRI can reflect the instant effects or sustained effects of acupuncture in the brain. This scoping review aims to summarize the characteristics of acupuncture mechanism studies employing task-based fMRI and conclude a reference for future studies. METHODS/DESIGN: This review will follow the Guidance for Conducting Scoping Reviews. Eligible articles will be collected from 7 databases (PubMed, Embase, Cochrane, CNKI, WanFang, VIP, and CBM) with the related keywords such as "Acupuncture" and "fMRI"; those articles should be published from January 1, 2000, to December 31, 2021; and the language should be restricted in English or Chinese. Each research step will involve at least two reviewers. The PRISMA-ScR (Preferred Reporting Items for Systemic Reviews and Meta-Analysis Extension for Scoping Reviews) will be used to organize the review. Data will be extracted from the illegible articles, and findings will be presented in tables and narrative form. A descriptive qualitative approach to analysis will be conducted to form the scoping review. DISCUSSION: This review aims to clarify the extent of acupuncture mechanism studies employing task-based fMRI. It is supposed to make a critical evaluation or propose quality requirements for future studies by summarizing the objectives and designs of eligible studies. What is more, directional suggestions will be provided for further studies. SCOPING REVIEW REGISTRATION: Open Science Framework https://osf.io/zjrdc/ .

[Panlong acupuncture combined with Xingnao Kaiqiao acupuncture for post-stroke fatigue: a randomized controlled trial].

OBJECTIVE: To observe the clinical effect of Panlong (dragon-like) acupuncture combined with Xingnao Kaiqiao (regaining consciousness and opening orifice) acupuncture on post-stroke fatigue. METHODS: Sixty patients with post-stroke fatigue were randomly divided into an observation group (30 cases, 1 case dropped off) and a control group (30 cases, 2 cases dropped off). The patients in the control group were treated with Xingnao Kaiqiao acupuncture at Neiguan (PC 6), Shuigou (GV 26), etc. for 30 min; based on the treatment of the control group, the patients in the observation group were treated with Panlong acupuncture at Jiaji (EX-B 2) of T1 to L5 for 15 min. The two groups were treated once a day, 6 times a week, for a total of 4 weeks. The scores of fatigue assessment instrument (FAI), energy of stroke-specific quality of life (SS-QOL), and modified Barthel index (MBI) in the two groups were compared before and after treatment, and the clinical efficacy was evaluated. RESULTS: Compared before treatment, the total score and each item score of FAI in the observation group were reduced after treatment (P<0.05), while the total score and FAI-1 and FAI-4 scores in the control group were reduced after treatment (P<0.05). The total score of FAI and FAI-1, FAI-2 and FAI-4 scores in the observation group were lower than those in the control group (P<0.05). After treatment, the SS-QOL energy scores and MBI scores of the two groups were increased compared before treatment (P<0.05), and the SS-QOL energy score in the observation group was higher than that in the control group (P<0.01). The total effective rate was 72.4% (21/29) in the observation group, which was better than 46.4% (13/28) in the control group (P<0.05). CONCLUSION: The Panlong acupuncture combined with Xingnao Kaiqiao acupuncture could effectively alleviate the fatigue symptoms and improve quality of life in patients with post-stroke fatigue.

Study of the characteristics of facial skin tone status in 1092 young Chinese females according to the ITA°.

BACKGROUND: The ITA° is the gold standard for skin tone classification. Different skin tones are often associated with different skin characteristics and issues. Different skin types are often associated with different skin characteristics and issues in China. AIMS: To study the population's skin color distribution and accompanying skin problems according to the ITA° classification standard. METHODS: A total of 1092 women aged 22-42 years were recruited in 7 cities in China. All biophysical parameter measurements (SM, CM, TWEL, pH, R2, GLOSS_DSCT, MEXA, ERYTH, ITA°; 9 indexes total) were quantified with noninvasive instruments. All volunteers provided consent before enrollment. RESULT: The main skin color categories were light (II), very light (I), intermediate (III), and tan (IV). The results demonstrated that the characteristics of the facial skin based on the ITA° were significantly different among cities and age groups and were associated with different skin issues. CONCLUSIONS: Lighter skin was associated with worse skin elasticity; intermediate skin was associated with worse skin hydration content and was most prone to being oily; and darker skin was associated with poor barrier function. Established principal component regression (PCR) indicated that pH, gloss GLOSS_DSC, MEXA, ERYTH, TEWL, and SM had significant effects on the ITA°.

Salvianolic acid B regulates collagen synthesis: Indirect influence on human dermal fibroblasts through the microvascular endothelial cell pathway.

BACKGROUND: Salvianolic acid B (SAB) is one of the main active ingredients of Salvia Miltiorrhiza. It has significant skin anti-aging, whitening, and sun protection properties. AIMS: The study aimed at studying the mechanism underlying the effect of salvianolic acid Bon collagen synthesis, which has good anti-aging efficacy and modulates microcirculation. METHODS: This study employed available public databases, bioinformatics methodologies, and the inverse docking approach to explore the effectiveness of SAB in the regulating collagen synthesis, and then used an human dermal fibroblast (HDF)- Human dermal microvascular endothelial cell (HDMEC) in vitro model to validate the predicted mechanism of SAB in influencing collagen synthesis. RESULTS: The results showed that NO production in SAB-treated HDMEC-conditioned medium was increased compared to that in control media, and the same tendency was also observed for growth factor production. SAB also upregulated HDMEC cellular eNOS and VEGF. When SAB-treated HDMEC conditioned medium was transferred to HDFs, the expression of collagen I, collagen III, and elastin in HDFs was upregulated and MMP-1 was downregulated. CONCLUSIONS: The results show that SAB regulates collagen through the HDMEC-HDF pathway. Furthermore, the mechanisms might be closely related to the microcirculation factors NO and VEGF.

Selection of different surgical methods for uterine fibroids: Protocol for a retrospective clinical study.

INTRODUCTION: Uterine fibroids is a common benign tumor disease of the female reproductive system. The main methods of current clinical treatment of uterine fibroids are conservative treatment and surgical treatment. With the rise of the concept of minimally invasive surgery in gynecology, laparoscopic myomectomy, and vaginal myomectomy have been widely used. METHODS/DESIGN: This study plans to retrospectively analyze 150 patients with uterine fibroids. They will be divided into laparoscopic myomectomy, vaginal myomectomy group, and open hysteromyoma resection group. This study will compare the intraoperative blood loss, operation time, postoperative exhaust time, postoperative hospital stay and postoperative complications of different surgical methods. DISCUSSION: This study will compare the clinical efficacy of these 3 common surgical methods through retrospective medical record analysis, and provide more reliable evidence-based medical evidence for clinical treatment choices.

Duality of capacities and Sobolev extendability in the plane.

We reveal relations between the duality of capacities and the duality between Sobolev extendability of Jordan domains in the plane, and explain how to read the curve conditions involved in the Sobolev extendability of Jordan domains via the duality of capacities. Finally as an application, we give an alternative proof of the necessary condition for a Jordan planar domain to be W 1 , q -extension domain when 2 < q < ∞ .

Preparation of Deep Sea Fish Oil-Based Nanostructured Lipid Carriers with Enhanced Cellular Uptake.

Nanostructured lipid carriers (NLC) are a promising pharmaceutical delivery system with mean diameter less than 200 nm which are dispersed in an aqueous phase containing emulsifier(s), to increase the water solubility, stability and bioavailability of oil compounds. Herein we prepared a promising NLC with glyceryl monostearate (GMS) as the solid lipid template and deep sea fish oil as the liquid lipid template using melted-ultrasonic method. Fish oil-NLC had a mean size of 84.7 ± 2.6 nm and a zeta potential that ranged from -17.87 mV to -32.91 mV. The nanoparticles exhibited good stability for four weeks with a high encapsulation efficiency of 87.5 ± 5.2%. Afterwards, confocal laser scanning microscopy (CLSM) and flow cytometry (FCM) were used to investigate the contribution of Fish oil-NLC in enhancing fluorescein isothiocyanate (FITC) cellular uptake in comparison with free FITC. The results of this study indicated the possibility of this carrier to overcome the shortcomings of deep sea fish oil and to provide a novel bifunctional carrier with nutritional potential and drug delivery ability.

MicroRNA-214 induces dendritic cell switching from tolerance to immunity by targeting ß-Catenin signaling.

MicroRNAs (miRNAs) are known to function as negative gene regulators. Recently, miRNAs have been shown to regulate immunity processes; however, the mechanism is unclear. The role of microRNA-214 (miR-214) in dendritic cell (DC) maturation has not been investigated. We found that the miR-214 level was correlated with the maturation of DCs and inflammatory cytokine secretion, as depressed miR-214 levels induced DC tolerance. We also identified ß-catenin as a target gene of miR-214 and demonstrated its association with Treg cell differentiation. MiR-214 regulates gene expression by binding to the 3'UTR of ß-catenin. The results suggest that ß-catenin is a critical regulator of tolerance in DCs via miR-214. The expression of miR-214 could be a potential therapeutic strategy in organ transplantation or autoimmunity patients.

Efficacy and safety of combination therapy with vildagliptin and metformin versus metformin up-titration in Chinese patients with type 2 diabetes mellitus: study design and rationale of the vision study.

BACKGROUND AND AIM: Limitations of the currently recommended stepwise treatment pathway for type 2 diabetes mellitus (T2DM), especially the failure of monotherapies to maintain good glycemic control, have prompted use of early, more aggressive combination therapies.The VISION study is designed to explore the efficacy and safety of vildagliptin as an add-on to metformin therapy compared with up-titration of metformin monotherapy in Chinese patients with T2DM. METHODS: VISION, a 24-week, phase 4, prospective, randomized, multicenter, open-label, parallel-group study, will include 3312 Chinese T2DM patients aged ≥18 years who are inadequately controlled (6.5% >HbA1c ≤9%) by metformin (750-1000 mg/day). Eligible patients will be randomized to receive either vildagliptin plus metformin or up-titration of metformin monotherapy (5:1). Patients will also be subgrouped (1:1:1:1) based on their age and body mass index (BMI): <60 years and <24 kg/m²; <60 years and ≥24 kg/m²; ≥60 years and <24 kg/m²; and ≥60 years and ≥24 kg/m². CONCLUSION: The VISION study will test the hypothesis that early use of combination therapy with vildagliptin and metformin will provide good glycemic control and will be better tolerated than up-titration of metformin monotherapy. The study will also correlate these benefits with age and BMI.

Proteomic analysis of glutathione S-transferase isoforms in mouse liver mitochondria.

AIM: To survey glutathione (GSH) S-transferase (GST) isoforms in mitochondria and to reveal the isoforms' biological significance in diabetic mice. METHODS: The presence of GSTs in mouse liver mitochondria was systematically screened by two proteomic approaches, namely, GSH affinity chromatography/two dimensional electrophoresis (2DE/MALDI TOF/TOF MS) and SDS-PAGE/LC ESI MS/MS. The proteomic results were further confirmed by Western blotting using monoclonal antibodies against GSTs. To evaluate the liver mitochondrial GSTs quantitatively, calibration curves were generated by the loading amounts of individual recombinant GST protein vs the relative intensities elicited from the Western blotting. An extensive comparison of the liver mitochondrial GSTs was conducted between normal and db/db diabetic mice. Student's t test was adopted for the estimation of regression and significant difference. RESULTS: Using GSH affinity/2DE/MALDI TOF/TOF MS, three GSTs, namely, alpha3, mu1 and pi1, were identified; whereas five GSTs, alpha3, mu1, pi1, kappa1 and zeta1, were detected in mouse liver mitochondria using SDS-PAGE/LC ESI MS/MS, of these GSTs, GST kappa1 was reported as a specific mitochondrial GST. The R² values of regression ranged between values of about 0.86 and 0.98, which were acceptable for the quantification. Based on the measurement of the GST abundances in liver mitochondria of normal and diabetic mice, the four GSTs, alpha3, kappa1, mu1 and zeta1, were found to be almost comparable between the two sets of animals, whereas, lower GST pi1 was detected in the diabetic mice compared with normal ones, the signal of Western blotting in control and db/db diabetic mice liver mitochondria is 134.61 ± 53.84 vs 99.74 ± 46.2, with P < 0.05. CONCLUSION: Our results indicate that GSTs exist widely in mitochondria and its abundances of mitochondrial GSTs might be tissue-dependent and disease-related.

[Mechanism of pigment content on infrared emissivity of composite coatings].

Polyurethane (PU)/flaky metal composite coatings were prepared by using PU and flaky metal powders as adhesives and pigments, respectively. The infrared emissivity of coatings with different metal content was measured by infrared emissometer, and the microstructure of PU/flaky metal composite coatings was observed by scanning electron microscopy. The results of infrared emissivity measurement indicate that the emissivity changes significantly with increasing metal content and presents a "U" type. The results of microstructure observation indicate that PU/flaky metal composite coatings have one-dimensional photonic structural characteristics. According to the microstructure characteristics, the optical reflection spectra of one-dimensional photonic structure in PU/flaky metal composite coatings with different metal content were simulated, and the results show that "U" type variation of emissivity with increasing metal content is derived from the blueshift of reflection peak wavelength with increasing metal content of one-dimensional photonic structure in coatings.

[Effect of Tangzhiping granule on blood lipids and free fatty acids in rats with insulin resistant diabetes].

OBJECTIVE: To investigate the effects of Tangzhiping Granule (TZPG) on blood lipids and free fatty acids (FFA) in rats with insulin resistant diabetes (IRD). METHODS: A blank control group consisted of randomly selected normal rats was set up. The remaining rats were established to IRD model by high-fat high-sugar diet feeding and streptozotocin injection. Then the 32 successfully modeled rats were randomized into the model group (treated by saline), the Tangmaikang group (treated with Tangmaikang Granule 1.35 g/kg), and the two TZPG groups treated with high dose (2.70 g/kg) and low dose TZPG (1.35 g/kg) respectively through intragastric infusion for 4 weeks. The body weight (BW), fasting blood glucose (FBG), insulin (INS), blood lipids including triglyceride (TG), total cholesterol (TC), low-density lipoprotein cholesterol (LDL-C), high-density lipoprotein cholesterol (HDL-C), and FFA were detected, and the insulin sensitivity index (ISI) calculated. RESULTS: Compared with the blank control group, BW, FBG and INS increased while ISI decreased in the model group (P < 0.05 or P < 0.01). All the above-mentioned abnormal indices were improved in the three treated groups (Tangmaikang, high and low dose TZPG group), but the improvements in the high dose TZPG group were more significant than those in the other two groups (P < 0.05 or P < 0.01). Similar outcomes were also seen in blood lipids detection, in which TG, TC, LDL-C and FFA were higher and HDL-C were lower in model rats than those in blank controls, they were improved in the three treated groups (P < 0.05), and the best improvements were seen in the high dose TZPG group (P < 0.05). CONCLUSION: TZPG could reduce levels of BW, FBG, INS, TC, TG, LDL-C and FFA, and increase levels of ISI and HDL-C in rat model of insulin resistant type 2 diabetes, so as to improve the insulin resistance in them.