A neonatal intelligent regulation system based on the combination of mild hypothermia mattress and hyperbaric oxygen chamber: introduction to a patent / 中国当代儿科杂志

Neonatal hypoxic-ischemic encephalopathy (HIE) is a common disease that affects brain function in neonates. At present, mild hypothermia and hyperbaric oxygen therapy are the main methods for the treatment of neonatal HIE; however, they are independent of each other and cannot be combined for synchronous treatment, without monitoring of brain function-related physiological information. In addition, parameter setting of hyperbaric oxygen chamber and mild hypothermia mattress relies on the experience of the medical practitioner, and the parameters remain unchanged throughout the medical process. This article proposes a new device for the treatment of neonatal HIE, which has the modules of hyperbaric oxygen chamber and mild hypothermic mattress, so that neonates can receive the treatment of hyperbaric oxygen chamber and/or mild hypothermic mattress based on their conditions. Meanwhile, it can realize the real-time monitoring of various physiological information, including amplitude-integrated electroencephalogram, electrocardiogram, and near-infrared spectrum, which can monitor brain function, heart rate, rhythm, myocardial blood supply, hemoglobin concentration in brain tissue, and blood oxygen saturation. In combination with an intelligent control algorithm, the device can intelligently regulate parameters according to the physiological information of neonates and give recommendations for subsequent treatment.

Clinical treatment outcomes and their changes in extremely preterm twins: a multicenter retrospective study in Guangdong Province, China / 中国当代儿科杂志

OBJECTIVES@#To investigate the clinical treatment outcomes and the changes of the outcomes over time in extremely preterm twins in Guangdong Province, China.@*METHODS@#A retrospective analysis was performed for 269 pairs of extremely preterm twins with a gestational age of <28 weeks who were admitted to the department of neonatology in 26 grade A tertiary hospitals in Guangdong Province from January 2008 to December 2017. According to the admission time, they were divided into two groups: 2008-2012 and 2013-2017. Besides, each pair of twins was divided into the heavier infant and the lighter infant subgroups according to birth weight. The perinatal data of mothers and hospitalization data of neonates were collected. The survival rate of twins and the incidence rate of complications were compared between the 2008-2012 and 2013-2017 groups.@*RESULTS@#Compared with the 2008-2012 group, the 2013-2017 group (both the heavier infant and lighter infant subgroups) had lower incidence rates of severe asphyxia and smaller head circumference at birth (P<0.05). The mortality rates of both of the twins, the heavier infant of the twins, and the lighter infant of the twins were lower in the 2013-2017 group compared with the 2008-2012 group (P<0.05). Compared with the 2008-2012 group, the 2013-2017 group (both the heavier infant and lighter infant subgroups) had lower incidence rates of pulmonary hemorrhage, patent ductus arteriosus (PDA), periventricular-intraventricular hemorrhage (P-IVH), and neonatal respiratory distress syndrome (NRDS) and a higher incidence rate of bronchopulmonary dysplasia (P<0.05).@*CONCLUSIONS@#There is a significant increase in the survival rate over time in extremely preterm twins with a gestational age of <28 weeks in the 26 grade A tertiary hospitals in Guangdong Province. The incidences of severe asphyxia, pulmonary hemorrhage, PDA, P-IVH, and NRDS decrease in both the heavier and lighter infants of the twins, but the incidence of bronchopulmonary dysplasia increases. With the improvement of diagnosis and treatment, the multidisciplinary collaboration between different fields of fetal medicine including prenatal diagnosis, obstetrics, and neonatology is needed in the future to jointly develop management strategies for twin pregnancy.

Association of peripheral blood pH early after birth with amplitude-integrated electroencephalography findings in neonates with intrauterine distress / 中国当代儿科杂志

OBJECTIVE@#To study the association of peripheral blood pH early after birth with amplitude-integrated electroencephalography (aEEG) findings in neonates with intrauterine distress.@*METHODS@#The clinical data of the neonates with intrauterine distress who were born from January 2017 to May 2018 were collected. According to peripheral blood pH within 30 minutes after birth, these neonates were divided into 3 groups: pH ≤7.15, 7.15 7.25, with 30 neonates in each group. aEEG mornitoring was performed within 6 hours after birth, and the abnormal rate of aEEG findings and average cerebral function monitoring (CFM) score were compared between groups.@*RESULTS@#The pH ≤7.15 group had a significantly higher abnormal rate of aEEG findings than the pH >7.25 group (P7.25 groups (P<0.05). Peripheral blood pH was positively correlated with the CFM score (r=0.26, P<0.05).@*CONCLUSIONS@#Peripheral blood pH is significantly associated with aEEG findings in neonates with intrauterine distress. Active measures should be adopted for the prevention and treatment of nervous system injury in neonates with intrauterine distress who have a significant reduction in peripheral blood pH early after birth (pH ≤7.15).

Clinical value of droplet digital PCR in rapid diagnosis of invasive fungal infection in neonates / 中国当代儿科杂志

OBJECTIVE@#To evaluate the clinical value of droplet digital PCR (ddPCR) in rapid and accurate diagnosis of invasive fungal infection (IFI) in neonates.@*METHODS@#The highly conserved sequence of fungi 18S RNA was selected as the target sequence, and primers were designed to establish a ddPCR fungal detection system. Blood samples were collected from 83 neonates with high-risk factors for IFI and/or related clinical symptoms in the neonatal intensive care unit (NICU) of a hospital in Shenzhen, China. Blood culture and ddPCR were used for fungal detection.@*RESULTS@#The ddPCR fungal detection system had a specificity of 100% and a sensitivity of 3.2 copies/μL, and had a good reproducibility. Among the 22 blood samples from neonates with a confirmed or clinical diagnosis of IFI, 19 were detected positive by ddPCR. Among the 61 blood samples from neonates who were suspected of IFI or had no IFI, 2 were detected positive by ddPCR.@*CONCLUSIONS@#The ddPCR technique can be used for the detection of neonatal IFI and is a promising tool for the screening and even diagnosis of neonatal IFI.

The prognostic value of the international prognostic index, the national comprehensive cancer network IPI and the age-adjusted IPI in diffuse large B cell lymphoma / 中华血液学杂志

Objective: To explore the prognostic value of the international prognostic index (IPI), the national comprehensive cancer network IPI(NCCN-IPI)and the age-adjusted IPI (aa-IPI) in diffuse large B cell lymphoma. Methods: A total of 311 patients with de novo diffuse large B-cell lymphoma (DLBCL) diagnosed from 2003 to 2012 in Nanfang hospital were included. All patients were divided into CHOP (cyclophosphamide, vincristine, doxorubicin, and prednisone) and R-CHOP (rituximab, CHOP) groups. Survival analysis was compared among IPI, NCCN-IPI and aa-IPI models. Discrimination of three different prognostic models was assessed using the Harrell's C statistic. Results: A total of 311 patients were analyzed. Among them, 128 patients were treated with CHOP regimen and other 183 patients were treated with R-CHOP regimen. In CHOP groups, both NCCN-IPI (5-year OS: 59.7% vs 26.8%, P<0.001) and aa-IPI (5-year OS: 71.0% vs 25.0%, P<0.001) showed better risk stratification for low-intermediate and high-intermediate group than the IPI (5-year OS: 47.6% vs 36.6%, P=0.003). However, in the patients treated with R-CHOP, NCCN-IPI showed better risk stratification in low, low-intermediate, high-intermediate groups (5-year OS: 96.0% vs 83.0% vs 66.5%, P=0.009). According to the Harrell's C statistic, C-index of IPI, NCCN-IPI and aa-IPI for overall survival (OS) were 0.546, 0.667, 0.698 in CHOP group and 0.611,0.654, 0.695 in R-CHOP group respectively. In patients younger than 60 years old, C-index of IPI, NCCN-IPI and aa-IPI for OS were 0.534, 0.675, 0.698 in CHOP group and 0.584, 0.648, 0.695 in R-CHOP respectively. Conclusion: The NCCN-IPI is more powerful than IPI and aa-IPI in DLBCL patients receiving R-CHOP. aa-IPI is a preferable model in predicting prognosis than IPI and NCCN-IPI in anthracycline-based chemotherapy without rituximab.

Unilateral versus bilateral percutaneous kyphoplasty for osteoporotic vertebraI fractures: a meta-analysis / 中国组织工程研究

BACKGROUND: Minimally invasive surgery is the main method for senile osteoporotic vertebral fractures, and percutaneous kyphoplasty (PKP) has been rapidly popularized. As the conventional bilateral transpedicular puncture needs a longer operation time and higher costs, unilateral transpedicular puncture is gradually applied in clinic. However, the long-term clinical efficacy of unilateral and bilateral PKP remains controversial. OBJECTIVE: To evaluate the effectiveness and safety of unilateral and bilateral PKP for osteoporotic vertebral fractures through a meta-analysis. METHODS: A computer-based retrieval of PubMed, Cochrane Library, Embase, Engineering Village, Web of Science, Wiley, OVID, Google Scholar, WanFang, CNKI and VIP databases was performed for the randomized controlled trials of unilateral and bilateral PKP for osteoporotic vertebral fractures through meta-analysis. Date and language of studies were not limited. Two reviewers screened the retrieved studies in accordance with the inclusion and exclusion criteria. The quality of the studies was evaluated by a modified Jadad scale prior to the meta-analysis on Review Manager 5.2 software.RESULTS AND CONCLUSION: (1) Finally, 956 patients from 11 randomized controlled trials were included and divided into two groups,unilateral group (n=483) and bilateral group (n=473) (1:1). (2) The meta-analysis results showed that the operation time in the unilateral group was significantly better than that in the bilateral group (MD=-20.38, 95%CI(-24.10, -16.65), P < 0.000 01); the dose and duration of intraoperative radiation exposure to the patients in the unilateral group were less than those in the bilateral group; the bone cement used in the unilateral group was significantly less than that in the bilateral group (P < 0.000 01); the incidence of bone cement leakage in the unilateral group was less than that in the bilateral group (P=0.005); there were no significant differences in the Visual Analogue Scale scores, vertebral height restoration, Cobb angle of the fractured vertebra and re-fracture rate of the adjacent vertebrae between two groups during long-term follow-up. (3) Compared with bilateral PKP, unilateral PKP exhibits a shorter operation time, less intraoperative radiation exposure and a lower incidence of bone cement leakage in the treatment of osteoporotic vertebral fractures, so it is a safer surgical method.

Effect of rhubarb on neonatal rats with bronchopulmonary dysplasia induced by hyperoxia / 中国当代儿科杂志

<p><b>OBJECTIVE</b>To study the effect of rhubarb on neonatal rats with bronchopulmonary dysplasia (BPD) induced by hyperoxia.</p><p><b>METHODS</b>A total of 64 rats (postnatal day 4) were randomly divided into four groups: air control, rhubarb control, hyperoxia model, and hyperoxia+rhubarb (n=16 each). The rats in the hyperoxia model and hyperoxia+rhubarb groups were exposed to hyperoxia (60% O2) to establish a BPD model. The rats in the rhubarb control and hyperoxia+rhubarb groups were given rhubarb extract suspension (600 mg/kg) by gavage daily. The pathological changes of lung tissue were evaluated by hematoxylin-eosin staining on postnatal days 14 and 21. The content of malondialdehyde (MDA) and the activity of superoxide dismutase (SOD) were measured by spectrophotometry. The mRNA and protein expression levels of tumor necrosis factor-alpha (TNF-α) and interleukin-6 (IL-6) were determined by RT-PCR and Western blot respectively.</p><p><b>RESULTS</b>The hyperoxia model group showed reduced alveolar number, increased alveolar volume, and simplified alveolar structure, which worsened over the time of exposure to hyperoxia. These pathological changes were significantly reduced in the hyperoxia+rhubarb group. On postnatal days 14 and 21, compared with the air control and rhubarb control groups, the hyperoxia model group had significantly reduced radical alveolar count (RAC), significantly reduced activity of SOD in the lung tissue, and significantly increased content of MDA and mRNA and protein expression levels of TNF-α and IL-6 (P<0.05). Compared with the hyperoxia model group, the hyperoxia+rhubarb group had significantly increased RAC, significantly increased activity of SOD in the lung tissue, and significantly reduced content of MDA and mRNA and protein expression levels of TNF-α and IL-6 (P<0.05).</p><p><b>CONCLUSIONS</b>Rhubarb may play a protective role in rats with BPD induced by hyperoxia through inhibiting inflammatory response and oxidative stress.</p>

Effects of Yinzhihuang oral liquid and Lonicera japonica extract on hemolysis and hyperbilirubinemia in rats with glucose-6-phosphate dehydrogenase deficiency / 中国当代儿科杂志

<p><b>OBJECTIVE</b>To investigate the effects of different doses of Yinzhihuang oral liquid and different concentrations of Lonicera japonica extract on hemolysis and hyperbilirubinemia in rats with glucose-6-phosphate dehydrogenase (G6PD) deficiency.</p><p><b>METHODS</b>Male Wistar rats were randomly divided into 10 groups (n=10 each): normal control group (untreated), negative control group (saline-treated), positive control group (primaquine-treated), low-, medium- and high-dose Yinzhihuang oral liquid groups (13.4, 26.8, and 53.6 mL/kg, respectively), and low-, medium-, high-, and very-high-concentration Lonicera japonica groups (6.7 mL/kg administered, containing 8, 40, 80, and 160 mg/mL Lonicera japonica extract, respectively). A rat model of acetylphenylhydrazine-induced G6PD deficiency was established in all groups except the normal control group, as confirmed by the morphological changes in erythrocytes observed using Wright's stain. After treatment, routine blood and biochemical tests were conducted to measure hemolytic indices, as well as changes in total and indirect bilirubin levels.</p><p><b>RESULTS</b>Rats with G6PD deficiency demonstrated irregular erythrocytes with a lighter-staining center. In the positive control group, the red blood cell count decreased, while the free hemoglobin count and the reticulocyte percentage increased, as compared with before treatment (P<0.05); in all the Yinzhihuang oral liquid groups and Lonicera japonica extract groups, all the above indices except reticulocyte percentage returned to the levels before treatment (P<0.05). Compared with the positive control group, all the Yinzhihuang oral liquid groups had significantly reduced total and indirect bilirubin levels (P<0.05), and all the Lonicera japonica group had significantly reduced indirect bilirubin levels (P<0.05). However, the total bilirubin level was significantly higher in the Lonicera japonica groups than in the Yinzhihuang oral liquid groups (P<0.05). The low-dose Yinzhihuang oral liquid group demonstrated a significantly greater decrease in total bilirubin level than the medium- and high-dose Yinzhihuang oral liquid group (P<0.05).</p><p><b>CONCLUSIONS</b>Administration of high-dose Yinzhihuang oral liquid and different concentrations of Lonicera Japonica extract do not cause hemolysis in rats with G6PD deficiency. Yinzhihuang oral liquid is more effective in treating hyperbilirubinemia than Lonicera Japonica extract. However, the efficacy of Yinzhihuang oral liquid may not be dose-dependent.</p>

A comparative analysis of neonatal critical illness score and score for neonatal acute physiology, perinatal extension, version II / 中国当代儿科杂志

<p><b>OBJECTIVE</b>To investigate the accuracy and clinical utility of neonatal critical illness score (NCIS) and score for neonatal acute physiology, perinatal extension, version II (SNAPPE-II) in predicting the "dead and abandoned" risk in critically ill neonates.</p><p><b>METHODS</b>A total of 269 critically ill neonates were divided into two groups according to their prognosis: dead/abandoned and improved/cured. The accuracy of these two scoring systems, NCIS and SNAPPE-II, in predicting the "dead and abandoned" risk was compared.</p><p><b>RESULTS</b>The dead/abandoned group had a significantly higher SNAPPE-II score than the improved/cured group (P<0.001), while there was no significant difference in the NCIS score between the two groups (P=0.091). The children who were in line with the individual indicator in the NCIS results had a significantly higher "dead and abandoned" risk than those who were not (P=0.005).</p><p><b>CONCLUSIONS</b>SNAPPE-II is more accurate in early prediction of the "dead and abandoned" risk in critically ill neonates compared with NCIS. NCIS has the ability to predict the "dead and abandoned" risk in children in line with the individual indicator.</p>

Study of 17 immune cytokines in the peripheral blood of premature infants with chronic lung disease / 南方医科大学学报

<p><b>OBJECTIVE</b>To explore the immunomechanism of chronic lung disease (CLD) in premature infants by investigating the changes of 17 cytokines.</p><p><b>METHODS</b>Twenty-six preterm neonates who had been in the NICU for over 28 days were divided into CLD group (n=14) and control group consisting of 12 preterm neonates. Seventeen cytokines, namely interleukin 1b (IL-1b), IL-2, IL-4, IL-5, IL-6, IL-7, IL-8, IL-10, IL-12, IL-13, IL-17, granulocyte-macrophage colony-stimulating factor, interferon-gamma, tumour necrosis factor alpha, granulocyte colony-stimulating factor, monocyte chemoattractant protein 1, and macrophage inflammatory protein-1b were detected in a single sample of peripheral blood by multi-plex technology (Bio-plex).</p><p><b>RESULTS</b>There were no significant differences in the level of the 17 cytokines between the two groups (P>0.05).</p><p><b>CONCLUSION</b>The cytokines examined may not be involved in the later period pathogenesis of CLD.</p>

Levels of cytokines in peripheral blood of premature infants with chronic lung disease / 中国当代儿科杂志

<p><b>OBJECTIVE</b>This study examined the levels of interleukin (IL)-1β, IL-6, IL-8 and tumor necrosis factor alpha (TNF-α) in peripheral blood of premature infants with chronic lung disease (CLD) in order to investigate the possible role of immunologic factors in CLD.</p><p><b>METHODS</b>Twenty-six premature infants who had been admitted to the neonatal intensive care unit for 28 days were classified into CLD (n=14) and non-CLD (control, n=12) groups. IL-1β, IL-6, IL-8 and TNF-α concentrations in peripheral blood were measured by multiplex technique (Bio-plex).</p><p><b>RESULTS</b>There were no significant differences in peripheral blood levels of IL-1β, IL-6, IL-8 and TNF-α between the two groups.</p><p><b>CONCLUSIONS</b>There are no significant changes in peripheral blood levels of IL-1β, IL-6, IL-8 and TNF-α in premature infants with CLD on the non-acute phase. Immunologic factors might not play a key role in CLD on the phase.</p>

Risk factors for adverse neonatal outcomes in 254 twins / 中国当代儿科杂志

<p><b>OBJECTIVE</b>The aim of this study was to identify the risk factors for adverse neonatal outcome in twins in order to provide a basis for the improvement of the survival and neonatal outcomes of twins.</p><p><b>METHODS</b>Data from 254 twins admitted to Nanfang Hospital of Southern Medical University From January 2005 to December 2009 were retrospectively studied. Risk factors for adverse neonatal outcomes were assessed by logistic regression analysis.</p><p><b>RESULTS</b>Of the 254 twins, 84 (33.1%) had an adverse outcome, including 10 (3.9%) neonatal deaths. Logistic regression analysis demonstrated that gestational age (≤34 weeks), cord abnormalities, meconium-stained amniotic fluid and 5-min Apgar scores (≤7) were independent risk factors for adverse neonatal outcomes (OR=4.434, 4.731, 3.424, 18.958, respectively; P=0.021, 0.001, 0.037, 0.011, respectively). Conception by assisted reproductive technology was shown as a protective factor for adverse neonatal outcomes (OR=0.389, P=0.037).</p><p><b>CONCLUSIONS</b>The twins with gestational age ≤34 weeks, cord abnormalities, meconium-stained amniotic fluid or 5-min Apgar scores (≤7) are subject to adverse neonatal outcome.</p>

Alveolar capillary dysplasia: a case report and review of literature / 中华儿科杂志

<p><b>OBJECTIVE</b>To report a newborn infant who died of alveolar capillary dysplasia (ACD). The literature on about 20 cases of ACD was reviewed.</p><p><b>METHODS</b>A retrospective review of records of infants from Medline with a diagnosis of ACD was carried out.</p><p><b>RESULTS</b>The case was a newborn female infant who developed respiratory distress 5 hours after an uncomplicated delivery. She died at the fourth day after birth despite full ventilatory support. The lung autopsy provided a diagnosis of ACD. In the 21 infants, 7 were male and 14 were female; 19 infants were born full-term and 2 were born pre-term. The birth weight of 19 infants and Apgar score of 15 infants were normal; 16 infants developed progressing tachypnea and cyanosis within 24 hours of age, 5 developed cyanosis at 1 day to 19 days. Echocardiography demonstrated a right to left shunt in the hearts of all the 21 infants, and pulmonary hypertension in 20 infants. Twenty infants were treated with conventional mechanical ventilation, 7 infants with high-frequency oscillatory ventilation and 12 infants with extracorporeal membrane oxygenation (ECMO). Fourteen infants were also treated with inhaled nitric oxide therapy and 4 with exogenous surfactant. Diagnostic open lung biopsy was performed in 6 infants. The chest radiography showed normal findings in 3 infants, pneumothoraces in 9 infants, reticular markings, granular, patchy or diffuse opacity in lungs of 7 infants, and decreased pulmonary vascular markings in two infants. All the 21 infants died; 8 of them died within 10 days of age, 7 within 30 days of age, and one died at the age of 4 months who was the longest survivor. Fourteen infants were associated with congenital malformations, such as cardiovascular, gastrointestinal, and genitourinary systems, including one infant associated with chromosomal abnormalities, two infants of familial genetic predisposition.</p><p><b>CONCLUSIONS</b>At present, ACD is still a disease with poor prognosis, significant medical expenses and no specific treatment. When respiratory failure or persistent pulmonary hypertension (PPHN) is persistent after routine treatment in an infant, ACD should be highly suspected and conventional open-lung biopsy should be preformed to confirm the diagnosis.</p>

Astragalus polysaccharides-induced gamma-globin mRNA expression in K562 cells / 南方医科大学学报

<p><b>OBJECTIVE</b>To investigate the effects of Astragalus polysaccharides (APS) in inducing the mRNA expression of Agamma- and Ggamma-globin in K562 cells.</p><p><b>METHODS</b>K562 cells were treated with APS at the concentration of 150, 300, and 450 mg/L, with Na-butyrate (NaB)-treated cells serving as the positive control and untreated cells as the blank control. Benzidine staining was used to examine the changes in hemoglobin synthesis in K562 cells after the treatments, and RT-PCR was employed to investigate the mRAN expression of Agamma- and Ggamma-globin.</p><p><b>RESULTS</b>Compared with the untreated cells, APS treatment (300 mg/L) for 48 h resulted in a significant increase of the percentages of benzidine-positive cells from (4.37-/+0.58)% to (15.67-/+1.80)%, and also in significantly increased expression of Agamma-globin and Ggamma-globin mRNAs by 3.59-/+0.16 and 5.02-/+0.81 folds, respectively (P=0.000).</p><p><b>CONCLUSION</b>APS potently enhances the mRNA expression of Agamma- and Ggamma-globin in K562 cells and warrants further evaluation as a potential therapeutic agent for beta-thalassemia.</p>

Clinical study of early interventions for ABO hemolytic disease of the newborn / 南方医科大学学报

<p><b>OBJECTIVE</b>To investigate therapeutic effect of high-dose intravenous immunoglobulin (IVIG) for early management of ABO hemolytic disease of the newborn (ABO-HDN).</p><p><b>METHODS</b>A total of 121 cases with ABO-HDN were randomly divided into treatment group (n=61) and control group (n=60). In addition to the routine treatment of the control group, IVIG were given at a daily dose of 400 mg/kg to the cases in the treatment group for 2-3 times, and therapeutic effects were evaluated and compared between the two groups.</p><p><b>RESULTS</b>The serum total billirubin concentration on the third day after treatment (153.42-/+45.21 micromol/L) and mean daily serum total billirubin concentration reduction (56.49-/+24.05 micromol/L) in treatment group were lower than those in the control group (P<0.01). The jaundice resolution time (23.51-/+11.19 h) and the phototherapy time (3.01-/+0.89 h) for billirubinemia treatment in treatment group were shorter than those in the control group (P<0.01). The patients in the the treatment group had higher hemoglobin level after treatment (15.59-/+2.01 g/L) than those of the control group (P<0.01).</p><p><b>CONCLUSION</b>High-dose IVIG can effectively arrest the progression of hemolytic disease, quickly reduce serum total billirubin concentration and shorten phototherapy time for early treatment of ABO-HDN.</p>

Preparation and in vitro and in vivo evaluations of topically applied capsaicin transfersomes / 药学学报

<p><b>AIM</b>To prepare capsaicin transfersomes and evaluate them in vitro and in vivo.</p><p><b>METHODS</b>Capsaicin transfersomes were prepared by high shear dispersing machine and evaluated by entrapment efficiency, release rate, in vitro skin permeation and distribution in different tissues in vivo.</p><p><b>RESULTS</b>Capsaicin transfersomes were composed of single unilamellar vesicles with an average diameter of 150.6 nm. Capsaicin entrapment efficiency increased distinctly with increasing of concentration of lecithin and entrapment efficiency is 96.7% while concentration of lecithin to 8%. Cumulative release amount of capsaicin is in direct proportion to the ethanol concentration in the receptor medium. In vitro capsaicin cumulative penetration amount showed higher levels in transfersomes than cream and suspension in rat abdominal skin. Abdominal skin cumulative penetration amount in vitro of capsaicin transfersomes in mouse was significantly higher than that from rat and men. In the same way, abdominal skin epidermal membrane cumulative penetration amount in vitro of capsaicin transfersomes was significantly higher than that from derma and full skin in human abdominal skin. The capsaicin tissue distribution of capsaicin injection by multiple celiac injections in rats is different: bone > plasma > skin > muscle. There is a similar result by multiple thigh topical application of capsaicin transfersomes: bone > skin > plasma > muscle.</p><p><b>CONCLUSION</b>Entrapment efficiency of capsaicin transfersomes reached the criterion of China Pharmacopoeia (> 80%) and capsaicin skin penetration can be increased by capsaicin transfersomes. It should be noted that the diverse characters and levels of skin may probably affect the permeating capability of capsaicin. Capsaicin tissue distribution in bone and muscle is similar and is different in plasma and skin by multiple injections and topical skin apply.</p>

Preparation and in vitro evaluations of topically applied capsaicin transfersomes / 中国中药杂志

<p><b>OBJECTIVE</b>Capsaicin transfersomes were prepared and its quality specifications were evaluated.</p><p><b>METHOD</b>Capsaicin transfersomes were prepared by high shear dispersing machine and evaluated on the entrapment efficiency, drugs release rate and in vitro skin permeation.</p><p><b>RESULT</b>Capsaicin transfersomes is composed of single unilamellar vesicles, with average size of 150.6 nm. Capsaicin entrapment efficiency achieved 96.7% while concentration of lecithin used was 8%. cumulative release amount of capsaicin was in direct proportion to the ethanol concentration in the medium. The in vitro rate cumulative penetration rate of capsaicin was higher in transfersomes than in cream and suspension in rats. Adomen skin cumulative penetration rate in vitro of capsaicin transfersomes in mouse was significantly higher than that from rat and men. In the same way,cumulative penetration rate in vitro of capsaicin transfersomes through abdomen skin epidermal membrance was significantly higher than that with derma and full skin in men.</p><p><b>CONCLUSION</b>Entrapment efficiency of capsaicin transfersomes reached 96.7%, meeting the criterion of China pharmacopia( > 80%), skin penetration of capsaicin was enhanced by a capsaicin transfersomes preparation and was affected by diverse characters and levels of skin.</p>

Influence of Astragalus Polysaccharides on Fetal Hemoglobin Synthesis and Cell Proliferation in K562 Cells / 实用儿科临床杂志

Objective To explore the effects of astragalus polysaccharides(APS) on fetal hemoglobin(HbF) synthesis and cell proli-feration in K562 cells.Methods K562 cells were chosen as the cell model and cells treated with Na-butyrate(NaB) were taken as the po-sitive control.Western blot was applied to study the level of HbF expression in K562 cells and Trypan blue dye exclusion test was employed to analyze the influence of APS(150 mg/L,300 mg/L,450 mg/L)on K562 cells proliferation.Results 1.Dosage effect:when compared with untreated K562 cells,the HbF expression level increased to(1.56?0.03),(1.78?0.04) and(1.51?0.32) fold,respectively after 48 h treated with different concentrations of APS(150 mg/L,300 mg/L,450 mg/L,F=310.476 P=0).The best inducing concentration was 300 mg/L(P=0.005).2.Time course: HbF levels raised up gradually and the maximum was(2.88?0.27) fold over baseline(P=0) at 48-60 h in the presence of 300 mg/L APS.Then it went to decline.There was statistical significance of HbF expression between K562 cells treated with 300 mg/L APS or NaB [(2.88?0.27) folds,P=0].3.Effects of APS on K562 cells proliferation:the highest reduction of the cell proliferative was obtained in K562 cells cultured in the presence of 0.5 mmol/L NaB.As detected by Trypan blue exclusion met-hod,growth rate of cells stimulated by APS was affect in a dose dependent manner,and significantly higher than NaB.For example,the inhibition rate at 48 hours was 20.45% for 300 mg/L APS but 79.55% for 0.5 mmol/L NaB(P=0).Conclusion APS has ability to induce HbF synthesis in K562 cells and revealed less cells reduction than that of NaB.

Experimental Study of Rotavirus Infection in Whole Body of Newborn Mouse / 实用儿科临床杂志

Objective To explore the hurt of susceptibility organs and critical orgens followed by rotavirus (RV) infection of whole body in newborn mouse.Methods RV strain was derived from the stool samples of patients with RV diarrhea and was proved to be long type by methods of ELISA and polyacrylamide gel electrophoresis (PAGE). RV was inoculated by the pathways of taking orally and injected to abdominal cavities,respectively. The pathological changes of the newborn mouse model infected with human natural RV by light microscope and electron microscope. The gene probe was marked by digoxin.The direct prove of RV infection in these organs was got by the detection of in situ PCR. Results Pathological changes were found in the small intestinal villus,lamina propria of the stomach and the heart cells of the mice taken RV orally.The mice with intraabdominal RV injection showed pathological changes of the cells in the small intestinal villus,liver and kidneys observed by electron microscope.Shortened small intestinal villus,nuclear membrane disorganization,massive vacuolization,mitochondrial swelling and rough endoplasmic reticulum dilation were observed in the cells of small intestinal.In the liver of the mice,marked mitochondrial swelling and agglutination,cell nucleus pyknosis or collapse,presence of numerous lipid droplets and vacuoles were found in the li-ver cells,with lymphocyte and plasmacyte infiltration.Obvious dilatation and shedding of the microvillus were found in cholangioles.The mitochondria of the proximal convoluted renal tubule showed mild swelling,but the cells in the heart and lung did not display obvious changes.Conclusion RV can damage lots of extra intestinal organs of the newborn mice if RV diffuses to the whole body of the mice.

Analysis of MHC complotype of han nationality chinese in guangdong area / 中国免疫学杂志

It was the first time that the complotypes of 84 chromosomes from Han nationality healthyChinese families investigated and analyzed in Guangdong are a with the methods adopted fromthe international complement reference laboratory.The results showed 18 various complolypeswere identified.The precedent complotypes are SC31,SC42,SC32 and SC41.There were 7 com-potypes of them existing the linkage disequilibria.The highest allotypes gene frequencies of thefour loci of complotypes were respectively as follows,BF S for BF alleles,C2C for C2 alleles,C4A3 and C4A4 for C4A alleles,C4B2 and C4B1 for C4B alleles.The C4AQO allele for C4A lo-cus was 4.8% and 1.2%C4BQO alleles for C4B locus.The frequencies of major complolypesfrom the data showed the similarities among Mongolian,Caucasian,Japanese and south easternAsia populations.The significance of the different frepuencies between the complotypes has beendiscussed.