Objective To study the distribution and significance of free organophosphorus poisons (FOP)with different degrees of hudrosolubility in the blood and adipose tissues of poisoned rabbits.Methods Seventy two male livid blue rabbits with 2-2.5 kg body weight were divided into 3 groups as per the rabbits intoxicated with different kinds of organophosphorous given subcutaneously,namely monocrotophos(11.12 mg/kg)group,trichloffon(556.0 mg/kg)group and methyl parathion(37.05 mg/kg)group(n =24 in each).Each group was further divided into 4 subgroups(n =6,in each).Blood samples and adipose tissues were collected 1 h,6 h,24 h and 96 h after administration of organophosphorous.Blood cells and plasma were separated.Well-formed adipose tissue homogenates were made.Acetylcholinesterase(AChE)activities were assayed with dithiobisnitrobenzoic acid(DTNB)enzyme kinetic method.The levels of FOPs in blood plasma,blood cells and adipose tissues were determined with enzyme inhibition method.Results There were signiflc.ant differences in FOP concentrations of plasma,blood cells and adipose tissues among moncrotophos group,trichlorfon group and methyl pararthion group at the intervals of 1,6 and 24 hours after organophosphorous administered(all P ＜ 0.05).There were no significant differences in FOP concentrations of moncrotophos among blood plasma,blood cells and adipose tissues at intervals of 1,6,24 and 96 hours.FOP concentrations of trichlorfon in adipose tissues were significantly higher than those in blood cells and plasma at intervals of 1,6,24 hours after organophosphorous administered(P ＜ 0.05).There were significant differences in FOP concentrations of pararthion in blood plasma compared with blood cells and adipose tissues at intervals of 1 and 6 hours after organophosphorous administered(P ＜ 0.05)and no difference was found over 24 hours after administration of organophosphorous(P ＞ 0.05).The significant differences in the rates of FOP clearance from blood and adipose tissues were also found between different organophosphates(P ＜ 0.05,moncrotophos ＞ trichlorfon ＞methyl pararthion).Conclusions With the decrease in hydrosolubility of organophosphates,the increase in adipose tissue-specific retention was found and the time required for clearance from blood and adipose tissue was prolonged.Adipose tissue was the major storage site for organophosphates with low hydrosolubility.

Objective:To explore the feasibility of sustained-release ibuprofen gel as a new local drug and its efficacy in the treatment of chronic periodontitis.Methods:Sustained-release ibuprofen gel was manufactured with PLGA as sustained-release adjuvant.Its release in vitro was tested by UV-spectrophotometer.60 teeth from 30 chronic periodontitis patients were chosen.Each patient had two teeth which were similar.The two teeth of every patient were divided into experiment group and control group.After scaling and root planning the sustained-release ibuprofen gel was injected into the pocket in the experiment group every week,two times in all.While those in the control group only had scaling and root planning.The local symptoms,sulcus bleeding index(SBI),probing depth(PD) and attachment level(AL) of the two groups were observed in the second and fourth week after treatment.Results obtained from the two groups were compared.Results:There were significant differences in each clinical index between the experiment group and the control group(P

With the continuous development in microfluidic fabrication technology, microfluidic analysis has evolved from a concept to one of research frontiers in last twenty years. The research of enzymes and enzyme inhibitors based on microfluidic devices has also made great progress. Microfluidic technology improved greatly the analytical performance of the research of enzymes and enzyme inhibitors by reducing the consumption of reagents, decreasing the analysis time, and developing automation. This review focuses on the development and classification of enzymes and enzyme inhibitors research based on microfluidic devices.

Objective To determine the effect of individualized oral hygiene instruction (OHI) on volatile sulfur compounds (VSCs) level in mouth air of patients with chronic periodontitis.Methods The individualized oral hygiene instruction was provided for 31 patients with chronic periedontitis (Organoleptic score was over two points).The VSCs and plaque index (PLI) were evaluated pre-OHI and post-OHI.Results The score of PLI decreased from 3.09±0.44 to 2.63±0.46 significandy (P<0.05).The organoleptic score (OS) decreased from 2.68±0.70 to 2.35±0.75 significandy (P<0.05).While there was no significant difference on the VSCs level pre-OHI and post-OHI (P<0.05).Conclusions Individualized oral hygiene instruction is helpful to remove plaque and improve oral hygiene.But the effect of OHI on VSCs level in mouth air is limited.

Objective Comparative effect of WeChat platform nursing intervention and routine nursing intervention on reducing the incidence of complications of children skin expansion in the process of external ear reconstruction. Methods 132 cases of congenital microtia received skin expander implantation at our institution from Jan 2014 to Aug 20 14 were included as control group. 122 cases of congenital microtia received skin expander implantation at our institution from Sep 2014 to Apr 2015 were included as the intervention group. Children and their families in the control group were treated with routine propaganda and education, and the intervention group were added with internet nursing intervention. Collection and analysis the family health knowledge degree and the occurrence of complications in children of the two groups. Results The score of health knowledge about skin expansion in the intervention group was (33.67 ± 2.44),which was significant higher than that of in the control group (25.07 ± 2.02), t=9.71, P < 0.01. The incidence rate of complication in the intervention group was 2.46%(3/122), which was significant lower than that of in the control group, 8.33%(11/132),χ2=4.20, P<0.05. The satisfaction rate of patients′family member in the intervention group was 95.08%(116/122), which was significant higher than that of in the control group, 84.09%(111/132 ),χ2=15.65, P<0.05. Conclusions WeChat platform nursing intervention can reduce expansion flap complications occurrence rate in the periods of expander. It is worthy of clinical application.

In recent years, the research on boron-containing drugs, especially boric acid drugs, has been increasing gradually.Boron-containing drugs, which have been a new area of research for pharmaceutical chemists in the development of new drugs, play an increasingly important anti-inflammatory, antibacterial, and anti-tumor role.At present, five boron-containing drugs have been approved, many are under clinical trials, and more are under investigation around the world, which has greatly expanded the application of boron in the research of new drugs.This paper introduces the characteristics of boron, and reviews the indications of representative boron-containing drugs in various research stages, their binding mechanisms with targets, and their progress after entering clinical trials, aiming to provide reference for further research on boron-containing drugs.

Epithelial membrane protein 3 (EMP3) is a trans-membrane signaling molecule with important roles in the regulation of apoptosis, differentiation and invasion of cancer cells, but the detailed is largely still unknown. We analyzed the mRNA levels and methylation statuses of EMP3 in 63 primary breast carcinomas and assessed their correlations with clinicopathologic variables. The expression of EMP3 mRNA in primary breast carcinomas was significantly higher than the expression of 20 normal breast tissues (p<10(-7)). EMP3 overexpression in breast carcinomas was significantly related to histological grade III (p=3.9X10(-7)), lymph node metastasis (p= 0.003), and strong Her-2 expression (p=3.3X10(-6)). Hypermethylation frequencies of EMP3 were detected in 36.5% of breast carcinomas by methylation-specific polymerase chain reaction. However, no significant correlations were found between methylation status of EMP3 and mRNA expression levels as well as other clinical parameters. In conclusion, EMP3 may be a novel marker of tumor aggressiveness. Overexpression of EMP3 in primary breast carcinoma is not associated with DNA methylation.
Adult ; Breast Neoplasms/*genetics/pathology ; Carcinoma/*genetics/pathology ; DNA Methylation ; Epigenesis, Genetic ; Female ; Gene Expression Regulation, Neoplastic ; Humans ; Lymphatic Metastasis ; Membrane Glycoproteins/*genetics/metabolism ; Middle Aged ; Neoplasm Staging ; RNA, Messenger/metabolism ; Receptor, erbB-2/genetics/metabolism ; Severity of Illness Index

Objective:To explore the clinical efficacy of adult donor dual kidney transplantation.Methods:Retrospective analysis of case data of 13 adult donor kidney dual kidney transplantation (DKT) performed in the The Second Xiangya Hospital of Central South University from September 2016 to December 2020. For 13 donors, the average age and BMI were (53.5±12.4)years and (24.3±2.8) kg/m 2, respectively. Their mean Serum creatinine (SCr) at admission and before procurement was (132.9±54.1)and (228.7±112.4)μmol/L, respectively. 3 of them had diabetes mellitus history, and 8 had hypertension history. 11 met the United Network for Organ Sharing (UNOS) DKT criteria and 6 met Remuzzi score DKT criteria. For 13 recipients, the average age and BMI were (39.3±8.9)years and (20.2±2.4)kg/m 2, respectively. All of them received ABO blood type-matched kidney transplants. 2 of them had their grafts transplanted in the bilateral iliac. In 12 cases, the grafts filled rapidly and urinated immediately when opening blood flow. In 1 case, the grafts were dark in color and vascular showed weak pulsation after opening blood flow. The time to recovery of perioperative graft function (from the day of surgery to the natural reduction of SCr to the normal range 44-133μmol/L), the occurrence of delayed graft function (DGF), acute rejection (AR), ureteral and surgical incision complications, as well as the recipients’ final follow-up SCr, eGFR, urinary protein, and grafts outcome were observed. Risk factors affecting outcomes were assessed by univariate logistic regression analysis. Results:The SCr dropped to the normal range at discharge in 10 recipients, and the average recovery time was (13.8±13.0) days. In other 3 cases SCr at discharge were 300.0, 149.0, 152.5μmol/L. 4 cases had DGF, 4 had AR, 1 experienced urinary fistula, and 1 experienced incisional dehiscence, which were treated with anti-rejection, J-tube implantation, continuous catheterization to maintain bladder void, secondary suturing, respectively. The follow-up time ranged from 4 to 54 months, with a median of 28(15.5, 31.0) months. At the final follow-up time, 10 cases had good graft function, 2 suffered impaired kidney function, and 1 experienced graft failure. The average SCr and eGFR except for graft failure patient were (144.2±101.3)μmol/L and (52.9±21.2)ml/min, respectively. 4 had positive urine protein. Univariate logistic regression analysis showed that donor age, BMI, history of diabetes mellitus and hypertension, and SCr were not significantly correlated with recipients’ DGF and graft impairment ( P>0.05), and due to the small sample size, multifactorial logistic regression analysis was not performed. Conclusion:The short to medium-term effects of adult donor DKT coule be safe and feasible.

Objective:To analyze the clinical characteristics of gastrointestinal symptoms and liver function injury in patients with coronavirus disease 2019 (COVID-19).Methods:From January 23, 2020 to February 29, 2020, the medical records of 251 patients with COVID-19 admitted to the West Campus of the Union Hospital, Tongji Medical College of Huazhong University of Science and Technology, were collected. The proportion of the patients with gastrointestinal symptoms including anorexia, nausea and vomiting, diarrhea and abdominal pain were analyzed respectively. The patients were divided into common type (76 cases), severe type (65 cases) and critical type (110 cases). The incidence of liver function injury and the changes of liver function parameters such as total bilirubin (TBil), direct bilirubin (DBil), alanine aminotransferase (ALT), aspartate aminotransferase (AST), alkaline phosphatase (ALP), γ-glutamyl transpeptidase (GGT), lactate dehydrogenase (LDH), albumin and globulin of the patients with different clinical types and with or without gastrointestinal symptoms were analyzed. Mann-Whitney U test, Chi square test and Fisher′s exact test were used for statistical analysis. Results:The main gastrointestinal symptoms of patients with COVID-19 were anorexia (33.9%, 85/251), diarrhea (12.0%, 30/251), nausea and vomiting (7.6%, 19/251) and abdominal pain (1.2%, 3/251). 143 patients (57.0%) had liver function injury, the rate of liver function injury in critical type patients was 75.5% (83/110), which was higher than that of common type patients (40.8%, 31/76) and severe type patients (44.6%, 29/65), and the differences were statistically significant ( χ2=22.765 and 16.865, both P<0.01). There was no significant difference in the proportion of patients with liver function injury between common type and severe type patients ( P>0.05). There was no statistically significant difference in the proportion of liver function injury between patients with gastrointestinal symptoms and those without gastrointestinal symptoms (57.8%(67/116) vs. 56.3%(76/135), P>0.05). The median values of TBil, DBil, ALT, AST, ALP, GGT, LDH and globulin level of critical type patients were 13.5 μmol/L, 4.9 μmol/L, 44.5 U/L, 50.0 U/L, 64.0 U/L, 41.0 U/L, 527.0 U/L and 33.6 g/L respectively. The proportions of critical type patients with TBil level >34.2 μmol/L, DBil level>13.6 μmol/L, ALT level>80 U/L and AST level>80 U/L were 7.3% (8/110), 7.3% (8/110), 17.3% (19/110) and 17.3% (19/110), respectively. These results were all higher than those of common type patients (9.5 μmol/L, 2.9 μmol/L, 28.5 U/L, 28.5 U/L, 54.0 U/L, 25.5 U/L, 225.5 U/L, 30.1 g/L, 0, 0, 6.6% (5/76) and 2.6% (2/76) ) and severe type patients (10.4 μmol/L, 3.4 μmol/L, 30.0 U/L, 31.0 U/L, 49.0 U/L, 25.0 U/L, 284.0 U/L, 30.7 g/L, 0, 0, 6.2% (4/65) and 1.5% (1/65)), and the differences were statistically significant ( Z=-4.264, -5.507, -4.000, -6.558, -3.112, -4.333, -4.858, -3.873, Fisher′s exact test, Fisher′s exact test, χ2=4.574, 9.620; Z=-3.060, -3.850, -3.923, -5.005, -9.495, -7.651, -3.853, -2.725, Fisher′s exact test, Fisher′s exact test, χ2=4.425, 10.169; all P<0.01). The median values of pre-albumin level, albumin level and the albumin to globulin ratio of critical type patients were 85.3 g/L, 28.2 g/L and 0.8, which were all lower than those of common type patients (157.3 g/L, 32.3 g/L and 1.1, respectively) and severe type patients (133.6 g/L, 31.6 g/L and 1.1, respectively), and the differences were statistically significant ( Z=-6.631, -3.647, -4.924, -4.503, -5.283 and -3.903, all P<0.01). The median albumin level of patients with diarrhea was lower than that of patients without diarrhea (28.2 g/L vs. 30.5 g/L), the proportion of diarrhea patients whose TBil level >20.0 to 34.2 μmol/L was higher than that of patients without diarrhea (70.0%, 21/30 vs. 10.9%, 24/221), and the differences were statistically significant ( Z=-2.182, χ2 =62.788; both P<0.05). Conclusions:Anorexia is the most common digestive symptom in COVID-19 patients, and the incidences of abdominal pain is low. The incidence of liver function injury of critical type patients is high. There is no significant correlation between gastrointestinal symptoms and liver function injury, and patients with diarrhea have lower albumin levels.

Objective:To investigate the feasibility and safety of right-sided abdominal evisceration in retroperitoneal liposarcoma.Methods:The clinical data of 16 cases of retroperitoneal liposarcoma performed with right-sided abdominal evisceration at Sarcoma Center of Peking University Cancer Hospital from Sep 2015 to Feb 2019 were analyzed retrospectively.Results:Complete resection were successfully performed in all 16 cases.The median tumor size was 29cm(13-43 cm), the median operative time was 660 min(429-940 min), the median estimated blood loss was 2 000 ml(300-6 000 ml). The major postoperative complications rate (Clavien-Dindo classification Ⅲ-Ⅴ) was 38%. Median overall survival is 41.0 months while the median disease-free survival is 32.6 months.Conclusions:Right-sided abdominal evisceration is a favorable procedure to attain complete resection with acceptable complication rate.