Platelet-Derived Growth Factor Is Associated with Progression of Symptomatic Intracranial Atherosclerotic Stenosis

Background@#and Purpose We aimed to determine the relationships of 33 biomarkers of inflammation, oxidation, and adipokines with the risk of progression of symptomatic intracranial atherosclerotic stenosis (ICAS). @*Methods@#Fifty-two of 409 patients who participated in the TOSS-2 (Trial of Cilostazol in Symptomatic Intracranial Stenosis-2) showed progression of symptomatic ICAS in magnetic resonance angiography at 7 months after an index stroke. We randomly selected 20 patients with progression as well as 40 age- and sex-matched control patients. We serially collected blood samples at baseline, 1 month, and 7 months after an index stroke. Multiplex analysis of biomarkers was then performed. @*Results@#Demographic features and risk factors such as hypertension, diabetes, and smoking history were comparable between the two groups. Univariate analyses revealed that the levels of platelet-derived growth factor (PDGF)-AA [median (interquartile range)=1.64 (0.76–4.57) vs. 0.77 (0.51–1.71) ng/mL], PDGF-AB/BB [10.31 (2.60–25.90) vs. 2.35 (0.74–6.70) ng/mL], and myeloperoxidase [10.5 (7.5–22.3) vs. 7.8 (5.5–12.2) ng/mL] at 7 months were higher in the progression group. In the multivariate analysis using logistic regression, the PDGF AB/BB level at 7 months was independently associated with the progression of ICAS (p=0.02). @*Conclusions@#The PDGF-AB/BB level is associated with the progression of ICAS, and so may play a significant role in the progression of human ICAS.

10-Year Fracture Risk in Postmenopausal Women with Osteopenia and Osteoporosis in South Korea

Background@#In South Korea, women aged 66 years are eligible for complimentary bone mineral density (BMD) screening via the National Screening Program for Transitional Ages. We aimed to evaluate the 10-year fracture risk in women receiving BMD screening between January 2008 and December 2015. @*Methods@#BMD was classified as normal (T-score ≥–1.0 standard deviation [SD]), osteopenia (T-score –2.5 SD), and osteoporosis (T score ≤–2.5 SD) from dual-energy X-ray absorptiometry. Follow-up continued from the screening date until a diagnosis for clinical fragility fracture (including sites of the vertebrae, hip, pelvis, clavicle, humerus, forearm, wrist, lower leg, and ankle), censored at the earliest date of trauma, death, or December 2017; fracture was ascertained using diagnostic codes from the National Health Insurance Service database. A multivariable Cox proportional hazard model was used to estimate hazard ratios (HRs) and 95% confidence intervals (CIs) for the risk of fracture in women with osteopenia or osteoporosis relative to women with normal BMD. @*Results@#Among the 271,197 women screened, 44.0% had osteopenia and 35.2% had osteoporosis. The 10 year cumulative incidence of fragility fractures was 31.1%, 37.5%, and 44.3% in women with normal BMD, osteopenia, and osteoporosis, respectively. Fracture risk was higher in women with osteopenia (HR, 1.31; 95% CI, 1.28 to 1.34) and osteoporosis (HR, 1.68; 95% CI, 1.64 to 1.72) than in women with normal BMD. @*Conclusion@#Women with osteopenia and women with osteoporosis, identified by the national BMD screening program, demonstrated a substantially elevated risk of fracture.

Radial Artery Pseudoaneurysm following Transradial Artery Coronary Angiography: A case report

OBJECTIVE@#This report aims to raise physician clinical awareness of radial artery pseudoaneurysm (RAP) and promote early recognition of this potentially serious complication. The article highlights various proposed treatment strategies in the management of this condition. @*BACKGROUND@#Radial artery pseudoaneurysm is a rare potentially serious complication following transradial artery coronary angiography for left heart catheterization and percutaneous coronary intervention. Risk factors associated with the development of RAP include multiple arterial puncture attempts, use of systemic anticoagulation, inadequate hemostasis following post-procedural compression, vascular site infection, use of larger sheaths, female gender, age of 70 years and older, diabetes mellitus, obesity and/or patients with high body mass index.1-3 Conservative medical treatment and/or surgical repair are the primary therapeutic approaches in the management of RAP. @*CONCLUSION@#Transradial artery access is associated with a significantly lower risk of major bleeding and vascular access site complications, reduces morbidity and mortality compared with the transfemoral approach. It is important to recognize though that complications do still occur with the transradial approach. RAP is one such entity wherein prevention is key - with adequate post-procedural compression, frequent observation, and careful assessment of the radial access site.

Decision-Making Visual Aids for Late, Imaging-Guided Endovascular Thrombectomy for Acute Ischemic Stroke / 대한뇌졸중학회지

Background@#and Purpose Speedy decision-making is important for optimal outcomes from endovascular thrombectomy (EVT) for acute ischemic stroke (AIS). Figural decision aids facilitate rapid review of treatment benefits and harms, but have not yet been developed for late-presenting patients selected for EVT based on multimodal computed tomography or magnetic resonance imaging. @*Methods@#For combined pooled study-level randomized trial (DAWN and DEFUSE 3) data, as well as each trial singly, 100 person-icon arrays (Kuiper-Marshall personographs) were generated showing beneficial and adverse effects of EVT for patients with AIS and large vessel occlusion using automated (algorithmic) and expert-guided joint outcome table specification. @*Results@#Among imaging-selected patients 6 to 24 hours from last known well, for the full 7-category modified Rankin Scale (mRS), EVT had number needed to treat to benefit 1.9 (interquartile range [IQR], 1.9 to 2.1) and number needed to harm 40.0 (IQR, 29.2 to 58.3). Visual displays of treatment effects among 100 patients showed that, with EVT: 52 patients have better disability outcome, including 32 more achieving functional independence (mRS 0 to 2); three patients have worse disability outcome, including one more experiencing severe disability or death (mRS 5 to 6), mediated by symptomatic intracranial hemorrhage and infarct in new territory. Similar features were present in person-icon figures based on a 6-level mRS (levels 5 and 6 combined) rather than 7-level mRS, and based on the DAWN trial alone and DEFUSE 3 trial alone. @*Conclusions@#Personograph visual decision aids are now available to rapidly educate patients, family, and healthcare providers regarding benefits and risks of EVT for late-presenting, imaging-selected AIS patients.

Pain management strategies in penile implantation / 亚洲男科学杂志(英文版)

The opioid epidemic continues to be a serious public health concern. Many have pointed to prescription drug misuse as a nidus for patients to become addicted to opioids and as such, urologists and other surgical subspecialists must critically define optimal pain management for the various procedures performed within their respective disciplines. Controlling pain following penile prosthesis implantation remains a unique challenge for urologists, given the increased pain patients commonly experience in the postoperative setting. Although most of the existing urological literature focuses on interventions performed in the operating room, there are many studies that examine the role of preoperative adjunctive pain medicine in diminishing postoperative narcotic requirements. There are relatively few studies looking at postoperative strategies for managing pain in prosthetic surgery with follow-up past the immediate hospitalization. This review assess the various strategies employed for managing pain following penile implantation through the lens of the current state of the opioid crisis, thus examining how urologists can responsibly treat pain without contributing to the growing threat of opioid addiction.

The Effect of Bracing on Spinopelvic Rotation and Psychosocial Parameters in Adolescents with Idiopathic Scoliosis

STUDY DESIGN: Retrospective study.PURPOSE: To evaluate the effect of bracing on spinopelvic rotation and psychosocial parameters in adolescents with idiopathic scoliosis (AIS).OVERVIEW OF LITERATURE: Complex three-dimensional deformity in AIS is proposed to influence the spinopelvic parameters and psychosocial condition in adolescents; however, few studies have quantitatively evaluated these parameters.METHODS: Thirty AIS who were prescribed a brace were included in the study. The patients’ standing postero-anterior and total spine radiographs were used to measure the primary curve Cobb angle, vertebral rotation, and pelvic rotation. Apical vertebral rotation (AVR), upper AVR, and lower AVR were measured using the Nash-Moe method. Pelvic rotation was determined using the left-to-right hemipelvic width ratio. The curve pattern was classified as per the Lenke classification system. In all, 14 patients had a type I curve, five had type II, six had type III, one had type IV, and four had type V curves. Brace compliance was subjectively evaluated by interviewing the patients and their parents. The health-related quality of life (HRQOL) and stress level of the recruited patients were assessed using the Brace Questionnaire and Bad Sobernheim Stress Questionnaire, respectively.RESULTS: The Cobb angle significantly decreased with at least 6 months of brace use. AVR correction changed significantly; however, no such results were observed for upper and lower AVR. Pelvic rotation and psychosocial parameters were not significantly affected by brace use. No statistically significant correlation was observed between brace compliance and curve correction.CONCLUSIONS: The Cobb angle and AVR are crucial measurements that help evaluate the treatment efficacy in AIS with small curves who undergo brace treatment. HRQOL and pelvic axial rotation are not influenced by the brace treatment.

Folic Acid in Stroke Prevention in Countries without Mandatory Folic Acid Food Fortification: A Meta-Analysis of Randomized Controlled Trials / 대한뇌졸중학회지

BACKGROUND AND PURPOSE: Additional folic acid (FA) treatment appears to have a neutral effect on reducing vascular risk in countries that mandate FA fortification of food (e.g., USA and Canada). However, it is uncertain whether FA therapy reduces stroke risk in countries without FA food fortification. The purpose of this study was to comprehensively evaluate the efficacy of FA therapy on stroke prevention in countries without FA food fortification. METHODS: PubMed, EMBASE, and clinicaltrials.gov from January 1966 to August 2016 were searched to identify relevant studies. Relative risk (RR) with 95% confidence interval (CI) was used as a measure of the association between FA supplementation and risk of stroke, after pooling data across trials in a random-effects model. RESULTS: The search identified 13 randomized controlled trials (RCTs) involving treatment with FA that had enrolled 65,812 participants, all of which stroke was reported as an outcome measure. After all 13 RCTs were pooled, FA therapy versus control was associated with a lower risk of any future stroke (RR, 0.85; 95% CI, 0.77 to 0.95). FA alone or combination of FA and minimal cyanocobalamin (≤0.05 mg/day) was associated with a lower risk of future stroke (RR, 0.75; 95% CI, 0.66 to 0.86) whereas combination of FA and cyanocobalamin (≥0.4 mg/day) was not associated with a lower risk of future stroke (RR, 0.95; 95% CI, 0.86 to 1.05). CONCLUSIONS: FA supplement reduced stroke in countries without mandatory FA food fortification. The benefit was found mostly in patients receiving FA alone or combination of FA and minimal cyanocobalamin.

Clinical Characteristics of Patients with Untreated Achalasia

BACKGROUND/AIMS: Patients with untreated achalasia frequently complain of heartburn and regurgitation. The diagnosis of achalasia might be delayed because these symptoms are misinterpreted as gastroesophageal reflux. We aim to evaluate the clinical, radiologic, and manometric findings in patient with untreated achalasia. METHODS: The records of patients diagnosed with primary achalasia between July 2004 and January 2012 at Gangnam Severance Hospital, Seoul, Korea were evaluated. We reviewed their clinical history and the findings of barium esophagogram, upper gastrointestinal endoscopy, and esophageal transit scintigraphy. We also compared the clinical, radiologic, and manometric findings of patients according to heartburn symptoms and proton pump inhibitor use. RESULTS: Our study included a total of 64 patients with a median age of 44.5 (interquartile range, 31.5–54.0). The median duration of symptoms was 23.5 (interquartile range, 5.3–57.0) months. Sixty-four patients (100%) had dysphagia, 49 (76.6%) had regurgitation, 35 (54.7%) had chest pain, and 38 (59.4%) had heartburn. Typical clinical features of gastroesophageal reflux disease (GERD) such as regurgitation, heartburn, and chest pain were observed in more than 50% of achalasia patients. Proton pump inhibitors were prescribed for 16 patients (25%) on the assumption that they had GERD. Patients with heartburn were more likely to experience weight loss (P = 0.009), regurgitation (P = 0.001), or chest pain (P = 0.019). CONCLUSIONS: Heartburn, regurgitation, and chest pain were commonly observed in patients with untreated achalasia. Therefore, these findings suggest that achalasia should be suspected in patients with refractory GERD.

Incidence and risk factors for cognitive impairment in rural elderly populations in Costa Rica / Incidencia y factores de riesgo para la discapacidad cognitiva en poblaciones rurales de tercera edad en Costa Rica

Risk factors for the onset of cognitive impairment in Costa Rica are not well understood, despite a substantial elderly population stemming from a higher than average life expectancy for the western hemisphere. To investigate the risk factors that predict the onset of cognitive impairment in the rural elderly of Costa Rica, a modified version of the Mini Mental State Exam-designed for illiterate populations-was administered to 90 elderly inhabitants of San Carlos, Alajuela, Costa Rica between April and May of 2011. Subsequently, each participant took a structured interview assessing viability of risk factors and behaviors potentially contributing to a diagnosis of cognitive impairment. Results showed strong dependencies between age (p=0.0001), education level (p=0.0095), the ability to read (p=0.0001) and write (p=0.0153), frequency of reading (p=0.0011), use of puzzles and mind games (p<0.0001), vocation (p=0.0225), area of residence (p<0.0001), comorbid mental diseases (p=0.0005), history of stroke or brain trauma (p=0.0104), urinary or renal problems (p=0.0443), consistent cooking practices (p=0.0262) and number of living companions (p=0.0299) in susceptibility for developing cognitive impairment. The study concluded that high intellectual use, or lack thereof, during the lifetime of a person was a predictor for cognitive status later in life. In addition, comorbid mental disorders, including neurological trauma due to stroke, impeded normal cognitive function. Future research should examine incidence and risk factors of cognitive impairment in urban, more educated populations. Rev. Biol. Trop. 62 (3): 869-876. Epub 2014 September 01.

Los factores de riesgo asociados con el inicio de la discapacidad cognitiva en Costa Rica son poco comprendidos, a pesar de la existencia de una considerable población de la tercera edad que ha resultado de una expectativa de vida mayor que el promedio en el hemisferio occidental. Para investigar los factores de riesgo que indican el inicio de la discapacidad cognitiva en adultos mayores de zonas rurales en Costa Rica, se les administró una versión modificada del Mini Examen del Estado Mental diseñado para poblaciones analfabetas a 90 adultos mayores residentes en San Carlos de Alajuela, Costa Rica, entre abril y mayo 2011. Posteriormente cada participante recibió una entrevista estructurada para evaluar la viabilidad de los factores de riesgo y comportamientos que podrían contribuir a un diagnóstico de discapacidad cognitiva. Los resultados mostraron una fuerte relación de dependencia entre la edad (p=0.0001), el nivel educativo (p=0.0095), la capacidad de leer (p=0.0001) y escribir (p=0.0153), la frecuencia de lectura (p=0.0011), la utilización de rompecabezas y juegos de estímulo intelectual (p<0.0001), la vocación (p=0.0225), el lugar de residencia (p<0.0001), las enfermedades mentales comórbidas (p=0.0005), un historial de derrame o de trauma cerebral (p=0.0104), los trastornos urinarios o renales (p=0.0443), la preparación de alimentos en forma consistente (p=0.0262), el número de personas con quienes convive (p=0.0299) y la susceptibilidad de desarrollar la discapacidad cognitiva. El estudio concluyó que un alto nivel de uso del intelecto, o la falta del mismo, durante la vida es un indicador del estatus cognitivo en etapas más avanzadas de la vida. Además, se encontró que las enfermedades mentales comórbidas, como el trauma neurológico provocado por un derrame cerebral, impiden la función cognitiva normal. Se recomienda que futuras investigaciones examinen la incidencia y los factores de riesgo asociados con la discapacidad cognitiva en poblaciones urbanas de mayores niveles educativos.

Extracorporeal photopheresis for chronic graft-versus-host disease: a systematic review and meta-analysis

BACKGROUND: The safety of extracorporeal photopheresis (ECP) in steroid-refractory chronic graft-versus-host disease (SR-cGVHD) has been explored in multiple studies but reported response rates (RR) vary significantly across studies. METHODS: We conducted a meta-analysis to assess the efficacy of ECP for SR-cGVHD. A search of electronic databases for studies published between 1984 and 2012 was conducted. End points included RR: complete response (CR), overall response rates (ORR), and organ-specific RR. The initial search generated 312 studies, of which 18 met the selection criteria (N=595). A random effects model was used for pooled rates. RESULTS: Pooled CR rates and ORR were 29% (confidence interval [CI], 19-42%) and 64% (CI, 65-82%), respectively. One-year overall survival was available for 4 studies only and was 49% (CI, 29-70%). The pooled RR for skin, liver, ocular, oral, lung, gastrointestinal and musculoskeletal SR-cGVHD was 74%, 68%, 60%, 72%, 48%, 53%, and 64%, respectively. There was a significant heterogeneity among studies due to differences in ECP schedules and duration. No significant differences in responses to ECP for pediatric and adult populations were found. Sensitivity analysis could not be undertaken due to a limited number of prospective studies. CONCLUSION: ECP is an effective therapy for oral, skin, and liver SR-cGVHD, with modest activity in lung and gastrointestinal SR-cGVHD.

Recorded Lower Esophageal Pressures as a Function of Electronic Sleeve Placement and Location of Gastric Pressure Measurement in Patients With Hiatal Hernia

BACKGROUND/AIMS: In high-resolution manometry lower esophageal sphincter pressure (LESP) is measured relative to intragastric pressure, however Gastric Marker(TM) (GM) location used to determine resting LESP is not well established with hiatal hernia (HH). We test the hypothesis that measured resting LESP varies with HH based on GM location. METHODS: Subjects with HH > or = 2 cm were included. The eSleeve(TM) was adjusted to span only the LES, excluding the crural diaphragm (CD). Resting LESP was determined by placing the GM below and above the CD (in the position yielding the highest resting LESP). Resting pressure across the lower esophageal sphincter (LES) to CD and pressure in the HH relative to subdiaphragmatic intragastric pressure were also measured. RESULTS: HH > or = 2 cm was present in 98 patients (mean length 2.7 cm). LESP decreased when GM was moved from below the CD into the HH: respiratory minimum LESP 7.5 +/- 1.1 to 3.6 +/- 0.9 mmHg; P < 0.001, mean LESP 17.7 +/- 1.3 to 13.7 +/- 1.1 mmHg; P < 0.001. When the eSleeve encompassed the LES and CD, the respiratory minimum pressure was 12.2 +/- 0.9 mmHg and mean pressure was 23.9 +/- 1.0 mmHg pressure (P < 0.001 for both). Pressure in the hernia pouch was greater than intragastric pressure: respiratory minimum 3.0 +/- 0.7 mmHg and mean 9.0 +/- 0.8 mmHg (P < 0.001 for both). pH studies showed a trend toward an association between abnormal distal esophagus acid exposure and lower resting LESP. CONCLUSIONS: GM placement in the HH produces lower resting LESPs. This may provide a more physiologic representation of LESP in HH.

Evaluation of Esophageal Motor Function With High-resolution Manometry

For several decades esophageal manometry has been the test of choice to evaluate disorders of esophageal motor function. The recent introduction of high-resolution manometry for the study of esophageal motor function simplified performance of esophageal manometry, and revealed previously unidentified patterns of normal and abnormal esophageal motor function. Presentation of pressure data as color contour plots or esophageal pressure topography led to the development of new tools for analyzing and classifying esophageal motor patterns. The current standard and still developing approach to do this is the Chicago classification. While this methodical approach is improving our diagnosis of esophageal motor disorders, it currently does not address all motor abnormalities. We will explore the Chicago classification and disorders that it does not address.

Adequacy of Care in patient with Psoriasis (ADECAP) Study

Introduction: Psoriasis is a chronic recurrent inflammatory skin disease and poses a lifelong burden. Psoriasis is now considered a systemic inflammatory disease. Increasing epidemiological studies have established the role of psoriasis as an independent risk factor in the development of metabolic syndrome and its components. This has led to changes in standard of care recommendations for patients with psoriasis. We conducted a clinical audit on “adequacy of care in patient with psoriasis”. Objective: To examine current trend of practice in the treatment of adults with psoriasis in Dermatology clinic (tertiary referral centre), Penang Hospital. This study also aims to determine the adequacy of care in psoriasis patients in general, and those on systemic agents in specific. Method: A retrospective study examined all adult psoriasis patients who visited Dermatology Clinic, Penang Hospital within 1st July - 31st July 2009. Only those who have been on follow-up for at least 1 year were included in the study. Demographic characteristics, disease burden and details of psoriasis management were documented and analysed. Standards were derived from recommendations of the British Association of Dermatologists (BAD) and American Academy of Dermatology (AAD). Results: Of the 112 patients, 67 were males (59.8%). The mean age of patients was 48.8 years. Fifty (44.6%) were Chinese, 35 Malay (31.3%), 26 Indians (23.2%) and 1 foreigner (0.9%). The mean frequency of clinic visit was 8.2. Forty-seven patients required systemic agents to achieve better disease control. Eighty-three (74.1%) patients were offered “Psoriasis Education Programme”. Percentage of patients who had their severity scoring done by using the DLQI, BSA & Pain score were 73.2%, 90.2% and 85.7% respectively. Only less than 50% of our patients were offered “Metabolic Syndrome Risk Factors Screening”. Of those on systemic agents, only 87.2% and 46.8% of patients, had their baseline and follow up blood investigations done respectively. Conclusion: The care of psoriasis patients in Dermatology Clinic, Penang Hospital is still not adequate. Particular areas of concern include blood monitoring for those on systemic agents and screening for metabolic syndrome risk factors. Remedial measures: Guidelines have been designed to create awareness and to educate doctors and patients on psoriasis and its association with metabolic syndrome. This includes a flow chart / tables to facilitate monitoring and screening of patients. Patients will be given pamphlets on the general knowledge on psoriasis, treatments and the risk of co-morbidities.

Changing seroprevalence of hepatitis B virus markers of adults in Singapore

<p><b>INTRODUCTION</b>We presented the findings from 2 seroprevalence studies conducted 6 years apart, so as to determine changes in the hepatitis B surface antigen (HBsAg) positivity rate and immunity to hepatitis B virus (HBV) among Singapore residents aged 18 to 69 years, and to assess the impact of a 4-year catch-up hepatitis B immunisation programme for adolescents and young adults launched in 2001.</p><p><b>MATERIALS AND METHODS</b>Two hepatitis B seroprevalence studies (HBSS) were conducted in 1999 and 2005 based on stored blood samples collected from 4698 participants aged 18 to 69 years during the national health survey (NHS) 1998 and from 3460 participants during the NHS 2004, respectively. Serology for HBsAg, hepatitis B e antigen (HBeAg) and antibody to HBsAg (anti-HBs) were tested by enzyme immunoassay in HBSS 1999 and electrochemiluminescence in HBSS 2005.</p><p><b>RESULTS</b>The overall age-standardised prevalence of HBsAg among Singapore residents aged 18 to 69 years decreased significantly from 4.0% in HBSS 1999 to 2.8% in HBSS 2005 (P = 0.002). The age-standardised prevalence of HBsAg in males (4.9% in 1999) and Chinese (4.7% in 1999) both decreased significantly to 2.7% and 2.8%, respectively in 2005. The overall age-standardised population immunity to HBV (anti-HBs >10 mIU/ml) increased from 39.7% in 1999 to 42.1% in 2005 (P = 0.019). In particular, the age-specific prevalence of anti-HBs showed a significant increase among those in the age group of 18 to 29 years from 27.9% in 1999 to 41.7% in 2005 (P <0.001) and among those in the age group of 30 to 39 years from 39.9% in 1999 to 44.7% in 2005 (P = 0.021).</p><p><b>CONCLUSION</b>There was an overall decline in the HBsAg positivity rate as well as an overall increase in population immunity to HBV. Following the 4-year catch-up immunisation programme, there was a significant increase in the immunity to HBV infection in the younger population aged 18 to 29 years.</p>

Relationship Between Intestinal Gas and the Development of Right Colonic Diverticula

BACKGROUNDS/AIMS: High intraluminal pressure has been reported to cause left colonic diverticula. However, the pathophysiology of right colonic diverticula is still unclear. Methane gas has been reported to delay small intestinal transit and to increase intraluminal pressure. The aim of this study was to evaluate the relationship between right colonic diverticula and intestinal gas produced by enteric bacteria. METHODS: Lactulose breath tests were performed in 30 patients who were diagnosed with right colonic diverticula via colonoscopy. The control group consisted of 30 healthy adults with no specific symptoms or medical histories. A hydrogen or methane producer was defined in 2 ways: either one that exhibited a breath hydrogen level > or = 20 ppm (methane > or = 10 ppm) baseline or one that exhibited an increase in breath hydrogen > or = 20 ppm (methane > or = 10 ppm) above baseline within the first 90 minutes of the test. RESULTS: The lactulose breath test (LBT) positivity in the diverticular group and the control group were 40.0% and 33.3%, respectively, without a statistically significant difference. The concentrations of methane and hydrogen gas measured by LBT increased over time, but there was no significant difference between the control and the diverticular groups. CONCLUSIONS: There was no significant relationship between right colonic diverticula and intestinal gases produced by enteric bacteria. However, time-dependent formation of diverticula should be taken into consideration, therefore long-term, large-scale follow-up studies may reveal further pathogenesis of right colonic diverticulosis.

Prevalence of intestinal microsporidiosis in Human Immunodeficiency Virus-infected patients with diarrhea in major United States cities

To determine the prevalence of intestinal microsporidiosis in HIV-infected patients, we performed a prospective study of HIV-infected patients with diarrheal illnesses in three US hospitals and examined an observational database of HIV-infected patients in 10 US cities. Among 737 specimens from the three hospitals, results were positive for 11 (prevalence 1.5 percent); seven (64 percent) acquired HIV through male-to-male sexual contact, two (18 percent) through male-to-male sexual contact and injection drug use, and one (9 percent) through heterosexual contact; one (9 percent) had an undetermined mode of transmission. Median CD4 count within six months of diagnosis of microsporidiosis was 33 cells/µL (range 3 to 319 cells/µL). For the national observational database (n = 24,098), the overall prevalence of microsporidiosis was 0.16 percent. Prevalence of microsporidiosis among HIV-infected patients with diarrheal disease is low, and microsporidiosis is most often diagnosed in patients with very low CD4+ cell counts. Testing for microsporidia appears to be indicated, especially for patients with very low CD4+ cell counts.

Para determinar a prevalência de microsporidiose intestinal em pacientes infectados pelo HIV foi realizado um estudo prospectivo em três hospitais dos Estados Unidos da América do Norte (EUA) e analizada uma base de dados nacional composta de dados coletados de pacientes infectados pelo HIV em 10 cidades dos EUA. De um total de 737 amostras de fezes de pacientes infectados pelo HIV que apresentavam diarréia, amostras de 11 pacientes (prevalência de 1,5 por cento) foram positivas para microsporídios. Todos os positivos eram do sexo masculino e, entre eles, sete (64 por cento) pacientes adquiriram a infecção pelo HIV através de relação homossexual, dois (18 por cento) através de relação sexual e drogas injetáveis e um (9 por cento) através de contato heterosexual, enquanto que em um paciente o modo de transmissão do HIV não foi determinado. A contagem média de linfócitos CD4 realizada até seis meses do diagnóstico de microsporidiose foi de 33 células/microlitro (3 a 319 células/microlitro). A análise da base de dados nacional (n = 24.098) mostrou uma prevalência de microsporidiose de 0,16 por cento. A prevalência de microsporidiose em pacientes HIV-positivos com diarréia é baixa. Entretando, como a microsporidiose é mais frequentemente diagnosticada em pacientes com contagens de CD4 muito baixas, a indicação de pesquisa de microsporídios é justificada, especialmente para estes pacientes.

Generation of Nitric Oxide in the Opossum Lower Esophageal Sphincter during Physiological Experimentation

Lipopolysaccharide (LPS), given in vivo, modulates opossum esophageal motor functions by inducing the inducible nitric oxide synthase (iNOS), which increases nitric oxide (NO) production. Superoxide, a NO scavenger, is generated during this endotoxemia. Superoxide is cleared by superoxide dismutase (SOD) and catalase (CAT) to protect the physiological function of NO. This study examined whether lower esophageal sphincter (LES) motility, NO release, and iNOS and nitrotyrosine accumulation in the LES are affected by LPS in vitro. Muscle strips from the opossum LES were placed in tissue baths containing oxygenated Krebs buffer. NO release was measured with a chemiluminescence NOx analyzer, and Western blots were performed to analyze iNOS and nitrotyrosine production. The percent change in resting LES tone after a 6-hour exposure to LPS was significantly increased compared to pretreatment values. The percent LES relaxation upon electrical stimulation was significantly decreased in the control group at 6 hours, indicating that the LPS treatment had an effect. The NO concentration in the tissue bath of LPS-treated muscle without nerve stimulation was significantly less than that of LPS treatment combined with SOD/CAT or SOD/CAT alone. iNOS and nitrotyrosine were detectable and increased over time in the LES muscle of both the control and LPS-treated groups. Antioxidant enzymes may play a role in regulating NO-mediated neuromuscular functions in the LES.

Non-cardiac Chest Pain: Too Hot to Handle, a Tight Squeeze, Nonsense or Off the Wall / 대한소화관운동학회지

No abstract available.

A Preliminary Survey of Emergency Medicine in 12 Asian Countries

BACKGROUND: To assess the current level of development of emergency medicine (EM) systems in Asia. METHOD: Survey of EM professionals from 12 Asian countries during a 90-day period from August to November 1998. 12 EM professionals from 12 Asian countries completed the survey. All participants were physicians. 7 participants (58%) gave presentations at an international EM conference during the study period. Respondents completed a 103 question questionnaire about the status of EM specialty, academic, patient care, information and management systems and the factors influencing the future of EM in their countries. RESULTS: 92% of respondents stated that their countries have hospital-based emergency departments (ED). More than 80% of respondents reported that their countries have EMS systems and ED systems for trauma care and patient transfer. More than 70% stated that their countries have national EM organizations, EM research, national EMS activation phone numbers, ED systems for pediatric emergency care, emergency physician (EP) training in ACLS and ATLS and peer review. More than 60% reported official recognition of EM as an independent specialty status, ED triage systems and systems for customer service. More than 50% reported EM residency training programs, EM journals and EP ability to perform rapid sequence intubation (RSI). 50% reported EP ability to perform thrombolysis for acute MI and 33% reported EP ultrasonography. 92% felt that a lack of funding posed a moderate or great obstacle to the future development of EM in their countries. CONCLUSION: Many essential systems of EM now exist throughout Asia. In the systems of administration and emergency medical information in many countries, there are some parts to be developed further.