1.Interferon beta-1b is effective and has a favourable safety profile in Chinese patients with relapsing forms of multiple sclerosis
ZX Li ; CZ Lu ; XH Zhang ; LY Cui ; XH Xu ; E Radue ; SG Chu ; LR Wang ; K Beckmann ; J Lampe ; C Pohl ; B Stemper ; R Sandbrink
Neurology Asia 2014;19(2):179-189
Background & Objective: No clinical study of any interferon beta therapy has yet been successfully conducted in Chinese multiple sclerosis patients, probably due to the low incidence of this disease in China. The primary objective of this study was to demonstrate that treating multiple sclerosis patients of Chinese origin with interferon beta-1b has a beneficial effect on disease course, as measured by the decrease of newly active lesions on magnetic resonance imaging. Methods: Chinese patients diagnosed with relapsing-remitting or secondary-progressive multiple sclerosis were enrolled in this multicenter, open label, single-arm study. Following a 3-month pre-treatment phase, patients were treated with 250 µg interferon beta-1b subcutaneously every other day for 6 months. Patients had regular assessments for treatment safety and efficacy of the treatment. Results: Thirty seven patients completed the trial. Significant decreases in the number of newly active lesions were observed in the 6-month treatment period compared with the pre-treatment period (median decrease 1.5 lesions, p<0.001). Most adverse events were mild and transient and no serious ones were observed. Conclusions: Treatment with interferon beta-1b significantly reduced the occurrence of new lesions and was well tolerated in this Chinese population. These findings support the use of interferon beta- 1b for treating Chinese MS patients.
2.Experimental study on high-frequency subharmonic scattering characteristics of ultrasound contrast agent microbubbles under low ambient pressure.
Huimin LU ; Yun WANG ; Laixin HUANG ; Gang XU ; Juan ZHOU ; Wenkui YU ; Fei LI
Journal of Biomedical Engineering 2023;40(6):1209-1216
Correlation between nonlinear subharmonic scattering of ultrasound contrast agent microbubbles and ambient pressure is expected to be used for local brain tissue pressure monitoring. Although high-frequency ultrasound has achieved high-resolution imaging of intracranial microvessels, the research on high-frequency subharmonic scattering characteristics of microbubbles is insufficient at present, which restricts the research progress of estimating local brain tissue pressure based on high-frequency subharmonic scattering of microbubbles. Therefore, under the excitation of 10 MHz high-frequency ultrasound, the effects of different acoustic pressures and ambient pressures on the high-frequency subharmonic scattering characteristics of three different ultrasound contrast agents including SonoVue, Sonazoid and Huashengxian were investigated in this in vitro study. Results showed that the subharmonic scattering amplitudes of the three microbubbles increased with the increase of ambient pressure at the peak negative acoustic pressures of 696, 766 and 817 kPa, and there was a favorable linear correlation between subharmonic amplitude and ambient pressure. Under the above three acoustic pressures, the highest correlation coefficient of SonoVue was 0.948 ( P = 0.03), the highest sensitivity of pressure measurement was 0.248 dB/mm Hg and the minimum root mean square error (RMSE) was 2.64 mm Hg. Sonazoid's highest correlation coefficient was 0.982 ( P < 0.01), the highest sensitivity of pressure measurement was 0.052 dB/mm Hg and the minimum RMSE was 1.51 mm Hg. The highest correlation coefficient of Huashengxian was 0.969 ( P = 0.02), the highest sensitivity of pressure measurement was 0.098 dB/mm Hg and the minimum RMSE was 2.00 mm Hg. The above in vitro experimental results indicate that by selecting ultrasound contrast agent microbubbles and optimizing acoustic pressure, the correlation between high-frequency subharmonic scattering of microbubbles and ambient pressure can be improved, the sensitivity of pressure measurement can be upgraded, and the measurement error can be reduced to meet the clinical demand for local brain tissue pressure measurement, which provided an important experimental basis for subsequent research in vivo.
Contrast Media
;
Microbubbles
;
Ultrasonography/methods*
3.The treatment of primary and metastatic renal cell carcinoma (RCC) with image-guided stereotactic body radiation therapy (SBRT)
BS Teh ; C Bloch ; M Galli-Guevara ; L Doh ; S Richardson ; S Chiang ; P Yeh ; M Gonzalez ; W Lunn ; R Marco ; J Jac ; AC Paulino ; HH Lu ; EB Butler ; RJ Amato
Biomedical Imaging and Intervention Journal 2007;3(1):1-9
Purpose: Brain metastases from renal cell carcinoma (RCC) have been successfully treated with stereotactic
radiosurgery (SRS). Metastases to extra-cranial sites may be treated with similar success using stereotactic body
radiation therapy (SBRT), where image-guidance allows for the delivery of precise high-dose radiation in a few fractions.
This paper reports the authors’ initial experience with image-guided SBRT in treating primary and metastatic RCC.
Materials and methods: The image-guided Brainlab Novalis stereotactic system was used. Fourteen patients with
23 extra-cranial metastatic RCC lesions (orbits, head and neck, lung, mediastinum, sternum, clavicle, scapula, humerus,
rib, spine and abdominal wall) and two patients with biopsy-proven primary RCC (not surgical candidates) were treated
with SBRT (24-40 Gy in 3-6 fractions over 1-2 weeks). All patients were immobilised in body cast or head and neck
mask. Image-guidance was used for all fractions. PET/CT images were fused with simulation CT images to assist in
target delineation and dose determination. SMART (simultaneous modulated accelerated radiation therapy) boost
approach was adopted. 4D-CT was utilised to assess tumour/organ motion and assist in determining planning target
volume margins.
Results: Median follow-up was nine months. Thirteen patients (93%) who received SBRT to extra-cranial
metastases achieved symptomatic relief. Two patients had local progression, yielding a local control rate of 87%. In the two patients with primary RCC, tumour size remained unchanged but their pain improved, and their renal function was
unchanged post SBRT. There were no significant treatment-related side effects.
Conclusion: Image-guided SBRT provides excellent symptom palliation and local control without any significant
toxicity. SBRT may represent a novel, non-invasive, nephron-sparing option for the treatment of primary RCC as well as extra-cranial metastatic RCC.
4.Preoperative evaluation of gastric cancer and risk factors for postoperative complications.
K C ZHANG ; C R LU ; B L ZHANG ; L CHEN
Chinese Journal of Gastrointestinal Surgery 2023;26(2):144-147
Surgical resection plays pivotal role in the treatment of gastric cancer. Adequate preoperative evaluation, precise intraoperative maneuver and delicate postoperative management lay the foundation for successful gastrectomy. The aim of preoperative evaluation is to stage tumor and identify potential risk factors (including preoperative factors like age, ASA status, body mass index, comorbidity, hypoalbuminemia, and intraoperative factors like blood loss and combined resection) which could lead to postoperative complication. With the management of prehabilitation, adequate medical decision could be made and patient's fast recovery could be ensured. With the rapid adoption of ERAS concept, there is increasing attention to prehabilitation which focus on optimization of cardio-pulmonary capacity and muscular-skeletal capacity. Despite of the efficacy of prehabilitation demonstrated by randomized controlled trials, consensus has yet to be reached on the following items: specific intervention, optimal measurement, candidate population and optimal timing for intervention. Balancing the efficiency and safety, preoperative evaluation could be put into clinical practice smoothly.
Humans
;
Stomach Neoplasms/complications*
;
Preoperative Care/adverse effects*
;
Postoperative Complications/etiology*
;
Gastrectomy/adverse effects*
;
Risk Factors
5.One new truxillic amide compound from Abrus mollis leaves
Xu-jiang YUAN ; Ping ZHANG ; Chun-yang LI ; Wu-zhen HUO ; Xiang-e LU ; Yan-hong WU
Acta Pharmaceutica Sinica 2016;51(10):1595-
The butanol extract part was extracted and isolated with water, alcohol and different organic solvents from Abrus mollis leaves. 6 compounds were isolated and purified using various column chromatographies and identified with the spectral techniques such as UV, MS, TLC, HPLC and NMR. The structures of 6 compounds were trigonelline (1), praline (2), alanine anhydride (3), (Z)-N-(4-hydroxycinnamoyl)tyrosine (4), (E)-N-(4-hydroxycinnamoyl)tyrosine (5), and abrusamide C (6). Compound 6 is a new compound, and compounds 1-4 were isolated from the plant for the first time.
6.Detection of TMPRSS2:ERG fusion gene in circulating prostate cancer cells.
Xueying MAO ; Greg SHAW ; Sharon Y JAMES ; Patricia PURKIS ; Sakunthala C KUDAHETTI ; Theodora TSIGANI ; Saname KIA ; Bryan D YOUNG ; R Tim D OLIVER ; Dan BERNEY ; David M PROWSE ; Yong-Jie LU
Asian Journal of Andrology 2008;10(3):467-473
AIMTo investigate the existence of TMPRSS2:ERG fusion gene in circulating tumor cells (CTC) from prostate cancer patients and its potential in monitoring tumor metastasis.
METHODSWe analyzed the frequency of TMPRSS2:ERG and TMPRSS2:ETV1 transcripts in 27 prostate cancer biopsies from prostatectomies, and TMPRSS2:ERG transcripts in CTC isolated from 15 patients with advanced androgen independent disease using reverse transcription polymerase chain reaction (RT-PCR). Fluorescence in situ hybridization (FISH) was applied to analyze the genomic truncation of ERG, which is the result of TMPRSS2:ERG fusion in 10 of the 15 CTC samples.
RESULTSTMPRSS2:ERG transcripts were found in 44% of our samples, but we did not detect expression of TMPRSS2:ETV1. Using FISH analysis we detected chromosomal rearrangements affecting the ERG gene in 6 of 10 CTC samples, including 1 case with associated TMPRSS2:ERG fusion at the primary site. However, TMPRSS2:ERG transcripts were not detected in any of the 15 CTC samples, including the 10 cases analyzed by FISH.
CONCLUSIONAlthough further study is required to address the association between TMPRSS2:ERG fusion and prostate cancer metastasis, detection of genomic truncation of the ERG gene by FISH analysis could be useful for monitoring the appearance of CTC and the potential for prostate cancer metastasis.
Base Sequence ; DNA Primers ; Humans ; In Situ Hybridization, Fluorescence ; Male ; Neoplastic Cells, Circulating ; Oncogene Proteins, Fusion ; genetics ; Prostatic Neoplasms ; blood ; genetics ; Reverse Transcriptase Polymerase Chain Reaction
7.Development, Translation and Validation of Enhanced Asian Rome III Questionnaires for Diagnosis of Functional Bowel Diseases in Major Asian Languages: A Rome Foundation-Asian Neurogastroenterology and Motility Association Working Team Report.
Uday C GHOSHAL ; Kok Ann GWEE ; Minhu CHEN ; Xiao R GONG ; Nitesh PRATAP ; Xiaohua HOU ; Ari F SYAM ; Murdani ABDULLAH ; Young Tae BAK ; Myung Gyu CHOI ; Sutep GONLACHANVIT ; Andrew S B CHUA ; Kuck Meng CHONG ; Kewin T H SIAH ; Ching Liang LU ; Lishou XIONG ; William E WHITEHEAD
Journal of Neurogastroenterology and Motility 2015;21(1):83-92
BAome III criteria. METHODS: After EAR3Q was developed by Asian experts by cCKGROUND/AIMS: The development-processes by regional socio-cultural adaptation of an Enhanced Asian Rome III questionnaire (EAR3Q), a cultural adaptation of the Rome III diagnostic questionnaire (R3DQ), and its translation-validation in Asian languages are presented. As English is not the first language for most Asians, translation-validation of EAR3Q is essential. Hence, we aimed to culturally adapt the R3DQ to develop EAR3Q and linguistically validate it to show that the EAR3Q is able to allocate diagnosis according to Ronsensus, it was translated into Chinese, Hindi-Telugu, Indonesian, Korean, and Thai, following Rome Foundation guidelines; these were then validated on native subjects (healthy [n = 60], and patients with irritable bowel syndrome [n = 59], functional dyspepsia [n = 53] and functional constipation [n = 61]) diagnosed by clinicians using Rome III criteria, negative alarm features and investigations. RESULTS: Experts noted words for constipation, bloating, fullness and heartburn, posed difficulty. The English back-translated questionnaires demonstrated concordance with the original EAR3Q. Sensitivity and specificity of the questionnaires were high enough to diagnose respective functional gastrointestinal disorders (gold standard: clinical diagnoses) in most except Korean and Indonesian languages. Questionnaires often uncovered overlapping functional gastrointestinal disorders. Test-retest agreement (kappa) values of the translated questionnaires were high (0.700-1.000) except in Korean (0.300-0.500) and Indonesian (0.100-0.400) languages at the initial and 2-week follow-up visit. CONCLUSIONS: Though Chinese, Hindi and Telugu translations were performed well, Korean and Indonesian versions were not. Questionnaires often uncovered overlapping FGIDs, which were quite common.
Asia
;
Asian Continental Ancestry Group*
;
Constipation
;
Diagnosis*
;
Dyspepsia
;
Follow-Up Studies
;
Gastrointestinal Diseases
;
Heartburn
;
Humans
;
Irritable Bowel Syndrome
;
Surveys and Questionnaires*
;
Sensitivity and Specificity
;
Translations
8.Readiness of clients in returning to face-to-face therapy in an outpatient rehabilitation clinic: a preliminary study.
Jaymilyn C. Ombao ; Charlemaine Deane A. Perez ; Audrey Anne D. Esguerra ; Ferdiliza Dandah S. Garcia ; Czarina Camille A. Lazaro ; Michael P. Longno ; Mariam Lujain J. Anwar Bahraq ; Angelika Marie R. Gonzales ; Jen Aebriel DC. Leynes ; Kyla Kristiana F. Lu ; Maria Inez Corazon T. Recto ; Maria Blanquita M. Salvador ; Regina Ariane DR. Tayag
Philippine Journal of Health Research and Development 2023;27(2):1-
BACKGROUND:
The Clinic for the Therapy Services (CTS) has considered reverting to face-to-face service delivery due to the downward trend in COVID-19 cases in the Philippines. However, the clinic has yet to investigate the willingness of the clients to this mode as a basis for its effective implementation.
OBJECTIVES:
The study described the readiness of CTS clients in returning to face-to-face therapy amidst the pandemic. It also discussed the factors affecting readiness based on a survey.
METHODOLOGY:
Fifty-five screened survey responses on the readiness of clients in returning to face-to-face therapy were gathered from January 30 to February 28, 2021. These underwent retrospective data analysis. Eight prospective online key informant interviews were conducted for clarifications in May 2022. This study utilized a descriptive analysis of quantitative categorical variables and a thematic content analysis of qualitative data.
RESULTS:
The majority of the respondents (35) stated readiness to attend face-to-face therapy followed by those who answered “No” (11), “Maybe” (5), and others (4). Factors that may have affected
readiness included travel, characteristics of face-to-face therapy, health conditions, vaccine, and
COVID-19 concerns. Frequently preferred health and safety strategies were the provision of hygiene
products, disinfection, limited people inside the clinic, separate therapy areas, and ventilation.
CONCLUSION
Most of the respondents expressed willingness to receive face-to-face therapy in April or May of 2021. Feasibility of travel and decreased number of COVID-19 cases may have encouraged
willingness to attend. Those who were hesitant reported concerns with traveling, characteristics of
face-to-face therapy, health conditions, the COVID-19 situation, and the vaccine.
rehabilitation
;
COVID-19
9.Stratified sampling survey of major human parasitic diseases in Henan province.
B L XU ; H W ZHANG ; Y DENG ; Z L CHEN ; W Q CHEN ; D L LU ; Y L ZHANG ; Y L ZHAO ; X M LIN ; Q HUANG ; C Y YANG ; Y LIU ; R M ZHOU ; P LI ; J S CHEN ; L J HE ; D QIAN
Chinese Journal of Epidemiology 2018;39(3):322-328
Objective: To understand the prevalence of major human parasitic diseases and related factors in Henan province. Methods: This stratified sampling survey was carried out according to the requirement of national survey protocol of major human parasitic diseases, 2014-2015. The prevalence of soil-transmitted helminths infection, taeniasis and intestinal protozoiasis were surveyed in 104 sites selected from 35 counties (districts) and the prevalence of clonorchiasis was surveyed in 62 sites selected from 37 townships. In each survey spot, 250 persons were surveyed. A total of 26 866 persons and 15 893 persons were surveyed. Modified Kato-Katz thick smear was used to detect the eggs of intestinal helminthes. Tube fecal culture was used to identify the species of hookworm. The Enterobius eggs were detected in children aged 3 to 6 years by using adhesive tape. The cyst and trophozoite of intestinal protozoa were examined with physiological saline direct smear method and iodine stain method. Results: The overall infestation rate of intestinal parasites was2.02% in Henan, and the worm infection rate was higher than protozoa infection rate. Fourteen kinds of intestinal parasites were found, including nematode (5 species), trematode (2 species), and protozoan (7 species). The infection rate of Enterobius vermicularis was highest, and Qinba Mountain ecological area had the highest infestation rate of intestinal parasites in 4 ecological areas of Henan. There was no significant difference in intestinal parasite infection rate between males and females (χ(2)=3.630, P=0.057), and the differences in intestinal parasite infection rate among different age groups had significance (χ(2)=124.783, P=0.000 1). The infection rate reached the peak in age group ≤9 years and the major parasite was Enterobius vermicularis. Furthermore the overall human infection rate of parasite showed a downward trend with the increase of educational level of the people (χ(2)=70.969, P=0.000 1), the differences had significance (χ(2)=120.118, P=0.000 1). For different populations, the infection rate of intestinal parasites was highest among preschool children. The infection of intestinal helminth was mainly mild, only 2 severe cases were detected. The infection rate of Clonorchis sinensis in urban residents was only 0.006%. Logistic regression analysis showed that being preschool children (χ(2)=15.765, P=0.000 1) and drinking well water (χ(2)=45.589, P=0.000 1) were the risk factors for intestinal parasite infection, and annual income per capita of farmers was the protective factor against intestinal parasite infection. The infection rates of protozoa and intestinal parasites decreased sharply compared with the results of previous two surveys, and the rate of intestinal helminth infection also dropped sharply compared with the second survey. The numbers of protozoa, helminth and intestinal parasites detected in this survey were all less than the numbers found in the previous two surveys. Conclusions: Compared the results of three surveys in Henan, the infection rate of protozoa and intestinal parasites showed a downward trend. The prevention and treatment of Enterobius vermicularis infection in children should be the key point of parasitic disease control in the future.
Animals
;
Child
;
Child, Preschool
;
Clonorchiasis/epidemiology*
;
Farmers
;
Feces/parasitology*
;
Female
;
Helminthiasis/epidemiology*
;
Helminths
;
Humans
;
Intestinal Diseases, Parasitic/parasitology*
;
Male
;
Prevalence
;
Protective Factors
;
Risk Factors
;
Rural Population
;
Soil Microbiology
;
Surveys and Questionnaires
;
Taeniasis/epidemiology*
;
Trematode Infections/parasitology*
;
Urban Population
;
Water Wells
10.Development of Human in vitro Brain-blood Barrier Model from Induced Pluripotent Stem Cell-derived Endothelial Cells to Predict the in vivo Permeability of Drugs.
Yuan LI ; Xueying SUN ; Houfu LIU ; Liang HUANG ; Guofeng MENG ; Yu DING ; Wenji SU ; Jiaqi LU ; Sophie GONG ; Georg C TERSTAPPEN ; Ru ZHANG ; Wandong ZHANG
Neuroscience Bulletin 2019;35(6):996-1010
An in vitro blood-brain barrier (BBB) model is critical for enabling rapid screening of the BBB permeability of the drugs targeting on the central nervous system. Though many models have been developed, their reproducibility and renewability remain a challenge. Furthermore, drug transport data from many of the models do not correlate well with the data for in vivo BBB drug transport. Induced-pluripotent stem cell (iPSC) technology provides reproducible cell resources for in vitro BBB modeling. Here, we generated a human in vitro BBB model by differentiating the human iPSC (hiPSC) line GM25256 into brain endothelial-type cells. The model displayed BBB characteristics including tight junction proteins (ZO-1, claudin-5, and occludin) and endothelial markers (von Willebrand factor and Ulex), as well as high trans-endothelial electrical resistance (TEER) (1560 Ω.cm ± 230 Ω.cm) and γ-GTPase activity. Co-culture with primary rat astrocytes significantly increased the TEER of the model (2970 Ω.cm to 4185 Ω.cm). RNAseq analysis confirmed the expression of key BBB-related genes in the hiPSC-derived endothelial cells in comparison with primary human brain microvascular endothelial cells, including P-glycoprotein (Pgp) and breast cancer resistant protein (BCRP). Drug transport assays for nine CNS compounds showed that the permeability of non-Pgp/BCRP and Pgp/BCRP substrates across the model was strongly correlated with rodent in situ brain perfusion data for these compounds (R = 0.982 and R = 0.9973, respectively), demonstrating the functionality of the drug transporters in the model. Thus, this model may be used to rapidly screen CNS compounds, to predict the in vivo BBB permeability of these compounds and to study the biology of the BBB.