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1.
Trop Biomed ; 39(1): 89-98, 2022 Mar 01.
Article in English | MEDLINE | ID: mdl-35507931

ABSTRACT

Epstein-Barr virus (EBV) was the first herpesvirus associated to human malignancies. Despite the well-known association between EBV and malignancies, the prevalence of EBV infection in Malaysians with malignancies is unknown. Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) was used to conduct a systematic review and meta- analysis of published data in this study. Studies reporting the occurrence of EBV infection in Malaysian malignancy patients were searched in electronic databases like PubMed, Scopus, ScienceDirect, and Google Scholar without year or language constraints. The study protocol was filed in PROSPERO (CRD42021273769). A total of 21 studies were included, with 1,036 EBV infection cases among 2,078 malignancy patients. The random-effects model was used to produce summary estimates. The pooled prevalence of EBV infection in Malaysians with malignancy was 36.3% (95% CI, 20.3 - 56.2). When the prevalence estimates were stratified by malignancy type, nasopharyngeal carcinoma has the highest prevalence (90.5%), followed by lymphoma (23.4%), and gastric carcinoma (10.0%). Male patients had a higher cases prevalence and most patients were above the age of 40. In Malaysia, many malignancies are increasingly linked to EBV infection. Screening for EBV infection in malignancy patients is therefore important to determine disease recurrence and metastases.


Subject(s)
Epstein-Barr Virus Infections , Nasopharyngeal Neoplasms , Epstein-Barr Virus Infections/epidemiology , Herpesvirus 4, Human , Humans , Malaysia/epidemiology , Male , Nasopharyngeal Carcinoma/epidemiology , Nasopharyngeal Neoplasms/pathology , Prevalence
2.
Tropical Biomedicine ; : 89-98, 2022.
Article in English | WPRIM (Western Pacific) | ID: wpr-936409

ABSTRACT

@#Epstein-Barr virus (EBV) was the first herpesvirus associated to human malignancies. Despite the well-known association between EBV and malignancies, the prevalence of EBV infection in Malaysians with malignancies is unknown. Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) was used to conduct a systematic review and metaanalysis of published data in this study. Studies reporting the occurrence of EBV infection in Malaysian malignancy patients were searched in electronic databases like PubMed, Scopus, ScienceDirect, and Google Scholar without year or language constraints. The study protocol was filed in PROSPERO (CRD42021273769). A total of 21 studies were included, with 1,036 EBV infection cases among 2,078 malignancy patients. The random-effects model was used to produce summary estimates. The pooled prevalence of EBV infection in Malaysians with malignancy was 36.3% (95% CI, 20.3 – 56.2). When the prevalence estimates were stratified by malignancy type, nasopharyngeal carcinoma has the highest prevalence (90.5%), followed by lymphoma (23.4%), and gastric carcinoma (10.0%). Male patients had a higher cases prevalence and most patients were above the age of 40. In Malaysia, many malignancies are increasingly linked to EBV infection. Screening for EBV infection in malignancy patients is therefore important to determine disease recurrence and metastases.

3.
BMJ Open ; 11(8): e051052, 2021 08 25.
Article in English | MEDLINE | ID: mdl-34433608

ABSTRACT

OBJECTIVES: This is a qualitative study which aims to understand the lived experience of dietary changes among Chinese survivors of colorectal cancer who participated in a dietary intervention. SETTING: The surgical and oncological departments of four public hospitals in Hong Kong. PARTICIPANTS: Fifty-five Chinese colorectal cancer survivors who were aged 18 years or above and had received potentially curative treatment in the surgical and oncological departments in Hong Kong were examined. Participants' mean age was 64 years, with 29 (53%) males. INTERVENTION: A 12-month dietary intervention delivered via face-to-face motivational interviews, fortnightly motivational phone calls, monthly electronic pamphlets, quarterly newsletters and quarterly group meeting. OUTCOME MEASURE: We adopted the qualitative approach to capture participants' perspectives and to apply the understanding pragmatically in everyday life. Content analysis was conducted. RESULTS: We identified themes of motives to changes of dietary practices including (1) individual commitment to dietary change; (2) adaptive strategies in interpersonal contexts and (3) working with healthcare professionals during the journey. CONCLUSIONS: The findings demonstrated how Chinese custom and culture posing unique challenges to colorectal cancer survivors and the need of having dietary advice from healthcare professionals. Participants were motivated to change their eating habits by support from family, friends and healthcare professionals. Our findings could help healthcare professionals provide specific dietary advice and guidance to Chinese colorectal cancer survivors. TRIAL REGISTRATION NUMBER: NCT01708824.


Subject(s)
Cancer Survivors , Colorectal Neoplasms , China , Hong Kong , Humans , Male , Middle Aged , Survivors
4.
Trop Biomed ; 38(1): 183-186, 2021 Mar 01.
Article in English | MEDLINE | ID: mdl-33797544

ABSTRACT

Spontaneous bacterial peritonitis caused by Vibrio cholerae non-O1/ non-O139 is a rare phenomenon. V. cholerae is known as a common aetiology of epidemic diarrheal disease and rarely causes extra-gastrointestinal infections. In this report, a 52-year-old man presented to our hospital with a clinical scenario for chronic liver cirrhosis with low grade fever and loose stools. V. cholerae was isolated from peritoneal fluid culture, which was further confirmed as non-O1/ non-O139 strain by multiplex polymerase chain reaction. The patient was successfully treated with antimicrobial therapy and peritoneal drainage. This case represents the first isolation of V. cholerae non-O1/ non-O139 strain from peritoneal fluid.


Subject(s)
Cholera/microbiology , Liver Cirrhosis/complications , Peritonitis/microbiology , Vibrio cholerae non-O1 , Cholera/complications , Humans , Male , Middle Aged
5.
Tropical Biomedicine ; : 183-186, 2021.
Article in English | WPRIM (Western Pacific) | ID: wpr-886634

ABSTRACT

@#Spontaneous bacterial peritonitis caused by Vibrio cholerae non-O1/ non-O139 is a rare phenomenon. V. cholerae is known as a common aetiology of epidemic diarrheal disease and rarely causes extra-gastrointestinal infections. In this report, a 52-year-old man presented to our hospital with a clinical scenario for chronic liver cirrhosis with low grade fever and loose stools. V. cholerae was isolated from peritoneal fluid culture, which was further confirmed as non-O1/ non-O139 strain by multiplex polymerase chain reaction. The patient was successfully treated with antimicrobial therapy and peritoneal drainage. This case represents the first isolation of V. cholerae non-O1/ non-O139 strain from peritoneal fluid.

6.
Epidemiol Infect ; 147: e111, 2019 01.
Article in English | MEDLINE | ID: mdl-30868987

ABSTRACT

Upper respiratory tract infections (URTIs) account for substantial attendances at emergency departments (EDs). There is a need to elucidate determinants of antibiotic prescribing in time-strapped EDs - popular choices for primary care despite highly accessible primary care clinics. Semi-structured in-depth interviews were conducted with purposively sampled physicians (n = 9) in an adult ED in Singapore. All interviews were analysed using thematic analysis and further interpreted using the Social Ecological Model to explain prescribing determinants. Themes included: (1) reliance on clinical knowledge and judgement, (2) patient-related factors, (3) patient-physician relationship factors, (4) perceived practice norms, (5) policies and treatment guidelines and (6) patient education and awareness. The physicians relied strongly on their clinical knowledge and judgement in managing URTI cases and seldom interfered with their peers' clinical decisions. Despite departmental norms of not prescribing antibiotics for URTIs, physicians would prescribe antibiotics when faced with uncertainty in patients' diagnoses, treating immunocompromised or older patients with comorbidities, and for patients demanding antibiotics, especially under time constraints. Participants had a preference for antibiotic prescribing guidelines based on local epidemiology, but viewed hospital policies on prescribing as a hindrance to clinical judgement. Participants highlighted the need for more public education and awareness on the appropriate use of antibiotics and management of URTIs. Organisational practice norms strongly influenced antibiotic prescribing decisions by physicians, who can be swayed by time pressures and patient demands. Clinical decision support tools, hospital guidelines and patient education targeting at individual, interpersonal and community levels could reduce unnecessary antibiotic use.


Subject(s)
Anti-Bacterial Agents/administration & dosage , Bacterial Infections/drug therapy , Emergency Service, Hospital , Practice Patterns, Physicians' , Respiratory Tract Infections/drug therapy , Respiratory Tract Infections/epidemiology , Adult , Aging , Comorbidity , Drug Utilization , Female , Humans , Immunocompromised Host , Male , Middle Aged , Primary Health Care , Singapore , Surveys and Questionnaires , Young Adult
7.
Public Health ; 169: 84-92, 2019 Apr.
Article in English | MEDLINE | ID: mdl-30826688

ABSTRACT

OBJECTIVES: This systematic review aims to provide updated and comprehensive evidence on the validity and feasibility of screening tools for mild cognitive impairment (MCI) and dementia among the elderly at primary healthcare level. STUDY DESIGN: A review of articles was performed. METHODS: A search strategy was used by using electronic bibliographic databases including PubMed, Embase and CENTRAL for published studies and reference list of published studies. The articles were exported to a bibliographic database for further screening process. Two reviewers worked independently to screen results and extract data from the included studies. Any discrepancies were resolved and confirmed by the consensus of all authors. RESULTS: There were three screening approaches for detecting MCI and dementia - screening by a healthcare provider, screening by a self-administered questionnaire and caretaker informant screening. Montreal Cognitive Assessment (MoCA) was the most common and preferable tool for MCI screening (sensitivity [Sn]: 81-97%; specificity [Sp]: 60-86%), whereas Addenbrooke's Cognitive Examination (ACE) was the preferable tool for dementia screening (Sn: 79-100%; Sp: 86%). CONCLUSION: This systematic review found that there are three screening approaches for detecting early dementia and MCI at primary health care. ACE and MoCA are recommended tools for screening of dementia and MCI, respectively.


Subject(s)
Cognitive Dysfunction/diagnosis , Dementia/diagnosis , Mass Screening/methods , Primary Health Care , Aged , Humans , Reproducibility of Results , Sensitivity and Specificity
8.
Trop Biomed ; 36(2): 379-389, 2019 Jun 01.
Article in English | MEDLINE | ID: mdl-33597399

ABSTRACT

Rapid detection of Burkholderia pseudomallei, the etiologic agent of melioidosis, allows for timely initiation of appropriate treatment and better clinical outcomes. In the current gold standard, the culture method is time consuming and suffers from low sensitivity. Meanwhile, previously reported molecular assays are fast and sensitive, but their performance on isolates from Malaysia, an endemic region of melioidosis is under reported. This study designed oligonucleotides targeting orf2 of Type III secretion system (TTSS) genes cluster for the detection of Malaysian B. pseudomallei isolates and evaluated the assay on 95 local B. pseudomallei strains, 58 other microorganisms and 71 clinical specimens from patients. The developed assay exclusively detected all tested B. pseudomallei isolates with a detection limit of 20 fg per reaction (equivalent to ~2.5 copies). Subsequent testing on clinical samples showed that the assay detected all confirmed specimens with the growth of B. pseudomallei (n = 10/10). None of the negative specimens had a detectable signal of our TTSS-orf2 assay (n = 0/61). In conclusion, the present study provides crucial preliminary data for a subsequent study and should be considered as a potential alternative to current time-consuming culture method for the detection of B. pseudomallei.

9.
Tropical Biomedicine ; : 379-389, 2019.
Article in English | WPRIM (Western Pacific) | ID: wpr-777843

ABSTRACT

@#Rapid detection of Burkholderia pseudomallei, the etiologic agent of melioidosis, allows for timely initiation of appropriate treatment and better clinical outcomes. In the current gold standard, the culture method is time consuming and suffers from low sensitivity. Meanwhile, previously reported molecular assays are fast and sensitive, but their performance on isolates from Malaysia, an endemic region of melioidosis is under reported. This study designed oligonucleotides targeting orf2 of Type III secretion system (TTSS) genes cluster for the detection of Malaysian B. pseudomallei isolates and evaluated the assay on 95 local B. pseudomallei strains, 58 other microorganisms and 71 clinical specimens from patients. The developed assay exclusively detected all tested B. pseudomallei isolates with a detection limit of 20 fg per reaction (equivalent to ~2.5 copies). Subsequent testing on clinical samples showed that the assay detected all confirmed specimens with the growth of B. pseudomallei (n = 10/10). None of the negative specimens had a detectable signal of our TTSS-orf2 assay (n = 0/61). In conclusion, the present study provides crucial preliminary data for a subsequent study and should be considered as a potential alternative to current time-consuming culture method for the detection of B. pseudomallei.

10.
Public Health ; 153: 52-57, 2017 Dec.
Article in English | MEDLINE | ID: mdl-28915402

ABSTRACT

OBJECTIVES: The success of the Expanded Program on Immunization among children will greatly reduce the burden of illness and disability from vaccine preventable diseases. The aim of the study was to evaluate the complete immunization coverage and its determinants among children aged 12-23 months in Malaysia. STUDY DESIGN: Cross-sectional study. METHODS: Data on immunization were extracted from the 2016 National Health and Morbidity Survey. Complete immunization coverage was classified as received all recommended primary vaccine doses by the age of 12 months and verified by vaccination cards, and incompletely immunized if they received partially recommended vaccine dose or not received any recommended vaccine dose or had no vaccination card. The multiple logistic regression analyses were conducted to determine the sociodemographic factors associated with complete immunization coverage. RESULTS: The overall complete immunization coverage among children (verified by cards) was 86.4% (n = 8920, 95% confidence interval: 85.4-87.4). Multivariable logistic regression analyses model revealed that factors significantly associated with complete immunization coverage were ethnicity, occupation of the mother, head of household's education level, and head of household's occupation. While sex, citizenship, household income, mother's age, and marital status were not significantly associated with complete immunization coverage. CONCLUSIONS: According to the World Health Organization criteria, the present study demonstrated that the immunization coverage of 86.4% is still unsatisfactory. Thus, the current intervention program should be enhanced in order to achieve the 95% coverage for all antigens in the national vaccination program.


Subject(s)
Vaccination Coverage/statistics & numerical data , Cross-Sectional Studies , Female , Health Surveys , Humans , Immunization Programs , Infant , Malaysia , Male , Socioeconomic Factors
11.
BMC Med Res Methodol ; 17(1): 85, 2017 Jun 02.
Article in English | MEDLINE | ID: mdl-28577547

ABSTRACT

BACKGROUND: Self-reported weight and height are commonly used in lieu of direct measurements of weight and height in large epidemiological surveys due to inevitable constraints such as budget and human resource. However, the validity of self-reported weight and height, particularly among adolescents, needs to be verified as misreporting could lead to misclassification of body mass index and therefore overestimation or underestimation of the burden of BMI-related diseases. The objective of this study was to determine the validity of self-reported weight and height among Malaysian secondary school children. METHODS: Both self-reported and directly measured weight and height of a subgroup of 663 apparently healthy schoolchildren from the Malaysian Adolescent Health Risk Behaviour (MyAHRB) survey 2013/2014 were analysed. Respondents were required to report their current body weight and height via a self-administrative questionnaire before they were measured by investigators. The validity of self-reported against directly measured weight and height was examined using intraclass correlation coefficient (ICC), the Bland-Altman plot and weighted Kappa statistics. RESULTS: There was very good intraclass correlation between self-reported and directly measured weight [r = 0.96, 95% confidence interval (CI): 0.93, 0.97] and height (r = 0.94, 95% CI: 0.90, 0.96). In addition the Bland-Altman plots indicated that the mean difference between self-reported and direct measurement was relatively small. The mean difference (self-reported minus direct measurements) was, for boys: weight, -2.1 kg; height, -1.6 cm; BMI, -0.44 kg/m2 and girls: weight, -1.2 kg; height, -0.9 cm; BMI, -0.3 kg/m2. However, 95% limits of agreement were wide which indicated substantial discrepancies between self-reported and direct measurements method at the individual level. Nonetheless, the weighted Kappa statistics demonstrated a substantial agreement between BMI status categorised based on self-reported weight and height and the direct measurements (kappa = 0.76, 95% CI: 0.67, 0.84). CONCLUSION: Our results show that the self-reported weight and height were consistent with direct measurements and therefore can be used in assessing the nutritional status of Malaysian school children from the age of 13 to 17 years old in epidemiological studies and for surveillance purposes when direct measurements are not feasible, but not for assessing nutritional status at the individual level.


Subject(s)
Body Height , Body Weight , Data Collection/methods , Self Report/standards , Adolescent , Body Mass Index , Cross-Sectional Studies , Female , Humans , Malaysia , Male , Reproducibility of Results , Rural Population/statistics & numerical data , Urban Population/statistics & numerical data
12.
Environ Sci Process Impacts ; 17(9): 1578-86, 2015 Sep.
Article in English | MEDLINE | ID: mdl-26220212

ABSTRACT

Burning of joss paper and incense is still a very common traditional custom in countries with a majority Chinese population. The Hungry Ghost Festival which is celebrated in the 7 month of the Chinese calendar is one of the events where joss paper and incense are burned as offerings. This study investigates the impact of the Ghost Month Festival (open burning event) on air quality by analysis of the chemical composition of particulate matter (PM) and rainwater samples collected during this event, compared with data collected throughout the year, as well as bottom ash samples from burning the original joss paper and incense. The results showed that the change in the chemical composition of the rainwater and PM2.5 (PM ≤ 2.5 µm) atmospheric samples could be correlated directly with burning events during this festival, with many elements increasing between 18% and 60% during August and September compared to the yearly mean concentrations. The order of percentage increase in elemental composition (in rain water and PM2.5) during the Hungry Ghost Festival is as follows: Zn > Ca > K > Mg > Fe > Al > Na ∼ Mn ∼ Ti ∼ V > Cu > As > Ni > Co > Cd > Cr > Pb. The chemical composition of the original source materials (joss paper and incense for combustion) and their associated bottom ash were analysed to explain the impact of burning on air quality.


Subject(s)
Air Pollutants/analysis , Air Pollution/statistics & numerical data , Environmental Monitoring , Fires , Holidays , Particulate Matter/analysis , China , Paper
13.
Public Health ; 128(5): 416-23, 2014 May.
Article in English | MEDLINE | ID: mdl-24726414

ABSTRACT

OBJECTIVES: Despite the health-enhancing benefits of physical activity, a large segment of the Malaysian population does not engage in regular physical activity at the recommended level. This study aimed to determine physical activity patterns and the associated sociodemographic correlates of physical activity. STUDY DESIGN: Data on physical activity were obtained from the National Health and Morbidity Survey (NHMS) 2011, a nationally representative, population-based cross-sectional study. A two-stage stratified sampling method was used to select a representative sample of Malaysian adults aged 16 years and above. METHODS: A total of 19,145 adults aged 16 years and above were recruited, and face-to-face interviews were conducted using the International Physical Activity Questionnaire (IPAQ), short version. The correlates for physical activity were identified using multivariate analysis. RESULTS: In this study, 64.3% (95%CI: 63.1-65.5) of Malaysian adults aged 16 and above were physically active, but overall physical activity levels decreased with advancing age. Men, rural residents, 'other' ethnic groups, and married women were more likely to demonstrate higher levels of physical activity. CONCLUSION: Approximately 65% of Malaysian adults were physically active. However, it is recommended that health promotions for active lifestyles should be targeted to the least active segments, which constitute more than a quarter of the Malaysian population.


Subject(s)
Ethnicity/psychology , Health Behavior , Motor Activity/physiology , Sedentary Behavior , Walking/physiology , Adolescent , Adult , Aged , Cross-Sectional Studies , Ethnicity/statistics & numerical data , Female , Health Surveys , Humans , Malaysia/epidemiology , Male , Metabolic Equivalent , Middle Aged , Multivariate Analysis , Prevalence , Residence Characteristics , Rural Population/statistics & numerical data , Sampling Studies , Sex Distribution , Socioeconomic Factors , Surveys and Questionnaires , Time Factors , Urban Population/statistics & numerical data , Young Adult
14.
J Bone Miner Metab ; 32(1): 48-55, 2014 Jan.
Article in English | MEDLINE | ID: mdl-23636506

ABSTRACT

Population-based studies have revealed a decline in the incidence of age-adjusted hip fractures in southern Chinese women during the past decade. To determine whether there was a secular change in population characteristics that accounted for this decline, we compared the bone mineral density (BMD) and lifestyle habits of two cohorts of women who were more than 50 years of age and who were recruited from 1995 to 2000 and 2005 to 2010. The BMD levels in the 2005-2010 cohort were significantly higher at the spine and hip and ranged from 3.6 to 17.8% among the different age groups. Additionally, a significantly lower prevalence of subjects with osteoporosis and osteopenia was observed. Longer reproductive years, higher levels of physical activity, higher estradiol and 25(OH) vitamin D levels, and lower alkaline phosphatase levels were found in the 2005-2010 cohort. After adjusting for bone-determining factors, significant differences were detected in the BMD levels at the lumbar spine, femoral neck, and total hip (4.17, 9.02, and 9.34%, respectively) in women >50 years of age but not in women ≤50 years of age. The secular increase in BMD and healthier lifestyles most likely led to the decline in the incidence of age-adjusted fractures.


Subject(s)
Asian People , Bone Density/physiology , Adult , Age Distribution , Aged , Aged, 80 and over , China/epidemiology , Female , Humans , Middle Aged , Osteoporosis/epidemiology , Osteoporosis/physiopathology , Prevalence , Risk Factors , Young Adult
15.
16.
J Ethnopharmacol ; 137(3): 1183-8, 2011 Oct 11.
Article in English | MEDLINE | ID: mdl-21810462

ABSTRACT

ETHNOPHARMACOLOGICAL RELEVANCE: Sargassum polycystum, a type of brown seaweed, has been used for the treatment of skin-related disorders in traditional medicine. AIM OF THE STUDY: The aim of the present study is to investigate the antimelanogenesis effect of Sargassum polycystum extracts by cell-free mushroom tyrosinase assay followed by cell viability assay, cellular tyrosinase assay and melanin content assay using B16F10 murine melanoma cells. MATERIALS AND METHODS: Sargassum polycystum was extracted with 95% ethanol and further fractionated with hexane, ethyl acetate and water. The ethanolic crude extract and its fractionated extracts were tested for their potential to act as antimelanogenesis or skin-whitening agents by their abilities to inhibit tyrosinase activity in the cell-free mushroom tyrosinase assay and cellular tyrosinase derived from melanin-forming B16F10 murine melanoma cells. The tyrosinase inhibitory activity was correlated to the inhibition of melanin production in α-MSH-stimulated and unstimulated B16F10 cells. RESULTS: Sargassum polycystum ethanolic extract and its fractions had little or no inhibitory effect on mushroom tyrosinase activity. However, when tested on cellular tyrosinase, the ethanolic extract and its non-polar fraction, hexane fraction (SPHF), showed significant inhibition of cellular tyrosinase activity. In parallel to its cellular tyrosinase inhibitory activity, SPHF was also able to inhibit basal and α-MSH-stimulated melanin production in B16F10 cells. CONCLUSIONS: Our findings showed that (i) cellular tyrosinase assay is more reliable than mushroom tyrosinase assay in the initial testing of potential antimelanogenesis agents and, (ii) SPHF inhibited melanogenesis by inhibiting cellular tyrosinase activity. SPHF may be useful for treating hyperpigmentation and as a skin-whitening agent in cosmetics industry.


Subject(s)
Bleaching Agents/pharmacology , Enzyme Inhibitors/pharmacology , Melanins/metabolism , Melanocytes/drug effects , Melanoma, Experimental/enzymology , Monophenol Monooxygenase/antagonists & inhibitors , Sargassum , Skin Pigmentation/drug effects , Animals , Bleaching Agents/isolation & purification , Cell Line, Tumor , Cell Survival/drug effects , Dose-Response Relationship, Drug , Enzyme Inhibitors/isolation & purification , Ethanol/chemistry , Hexanes/chemistry , Melanocytes/enzymology , Melanocytes/pathology , Melanoma, Experimental/pathology , Mice , Monophenol Monooxygenase/metabolism , Sargassum/chemistry , Solvents/chemistry , alpha-MSH/metabolism
17.
Ultrasound Obstet Gynecol ; 38(4): 371-82, 2011 Oct.
Article in English | MEDLINE | ID: mdl-21830244

ABSTRACT

OBJECTIVE: Congenital uterine anomalies are common but their effect on reproductive outcome is unclear. We conducted a systematic review to evaluate the association between different types of congenital uterine anomaly and various reproductive outcomes. METHODS: Searches were performed using MEDLINE, EMBASE, the Cochrane Library and Web of Science. The Newcastle-Ottawa Quality Assessment Scale was used for quality assessment. Uterine defects were grouped into arcuate uteri, canalization defects (septate and subseptate uteri) and unification defects (unicornuate, bicornuate and didelphys uteri). Pooled risk ratios (RR) with 95% confidence intervals (CI) were computed using random effects models. RESULTS: We identified nine studies comprising 3805 women. Meta-analysis showed that arcuate uteri were associated with increased rates of second-trimester miscarriage (RR, 2.39; 95% CI, 1.33-4.27, P = 0.003) and fetal malpresentation at delivery (RR, 2.53; 95% CI, 1.54-4.18; P < 0.001). Canalization defects were associated with reduced clinical pregnancy rates (RR, 0.86; 95% CI, 0.77-0.96; P = 0.009) and increased rates of first-trimester miscarriage (RR, 2.89; 95% CI; 2.02-4.14; P < 0.001), preterm birth (RR, 2.14; 95% CI, 1.48-3.11; P < 0.001) and fetal malpresentation (RR, 6.24; 95% CI, 4.05-9.62; P < 0.001). Unification defects were associated with increased rates of preterm birth (RR, 2.97; 95% CI, 2.08-4.23; P < 0.001) and fetal malpresentation (RR, 3.87; 95% CI, 2.42-6.18; P < 0.001). CONCLUSIONS: Canalization defects reduce fertility and increase rates of miscarriage and preterm delivery. None of the unification defects reduces fertility but some are associated with miscarriage and preterm delivery. Arcuate uteri are specifically associated with second-trimester miscarriage. All uterine anomalies increase the chance of fetal malpresentation at delivery.


Subject(s)
Abortion, Spontaneous , Labor Presentation , Premature Birth , Uterine Diseases/congenital , Uterus/abnormalities , Female , Fertility , Humans , Meta-Analysis as Topic , Pregnancy , Pregnancy Outcome , Risk Factors , Uterine Diseases/complications
18.
Hum Reprod Update ; 17(6): 761-71, 2011.
Article in English | MEDLINE | ID: mdl-21705770

ABSTRACT

BACKGROUND: The prevalence of congenital uterine anomalies in high-risk women is unclear, as several different diagnostic approaches have been applied to different groups of patients. This review aims to evaluate the prevalence of such anomalies in unselected populations and in women with infertility, including those undergoing IVF treatment, women with a history of miscarriage, women with infertility and recurrent miscarriage combined, and women with a history of preterm delivery. METHODS: Searches of MEDLINE, EMBASE, Web of Science and the Cochrane register were performed. Study selection and data extraction were conducted independently by two reviewers. Studies were grouped into those that used 'optimal' and 'suboptimal' tests for uterine anomalies. Meta-analyses were performed to establish the prevalence of uterine anomalies and their subtypes within the various populations. RESULTS: We identified 94 observational studies comprising 89 861 women. The prevalence of uterine anomalies diagnosed by optimal tests was 5.5% [95% confidence interval (CI), 3.5-8.5] in the unselected population, 8.0% (95% CI, 5.3-12) in infertile women, 13.3% (95% CI, 8.9-20.0) in those with a history of miscarriage and 24.5% (95% CI, 18.3-32.8) in those with miscarriage and infertility. Arcuate uterus is most common in the unselected population (3.9%; 95% CI, 2.1-7.1), and its prevalence is not increased in high-risk groups. In contrast, septate uterus is the most common anomaly in high-risk populations. CONCLUSIONS: Women with a history of miscarriage or miscarriage and infertility have higher prevalence of congenital uterine anomalies compared with the unselected population.


Subject(s)
Uterus/abnormalities , Abortion, Spontaneous/etiology , Female , Humans , Infant, Newborn , Infertility, Female/epidemiology , Infertility, Female/etiology , Pregnancy , Premature Birth/etiology , Prevalence , Risk Factors , Urogenital Abnormalities/complications , Urogenital Abnormalities/diagnosis , Urogenital Abnormalities/epidemiology
19.
Clin Neurol Neurosurg ; 113(8): 612-6, 2011 Oct.
Article in English | MEDLINE | ID: mdl-21530070

ABSTRACT

BACKGROUND AND PURPOSE: Concurrent small vessel, intracranial and extracranial large artery disease (SLAD) is common in Asian but its impact on cognitive and functional outcomes is unclear. We aimed to evaluate the clinical, cognitive and functional outcomes in ischemic stroke patients with SLAD. METHODS: Chinese ischemic stroke patients with diffuse white matter lesions (WMLs) were recruited as part of the VITATOPS Trial. They were studied with MRI and MRA of brain. Various neuropsychiatric batteries were used to assess the cognitive functions. RESULTS: Totally 97 patients with acute ischemic stroke and diffuse WMLs were included, of whom 44 (45%) had SLAD. Patients with SLAD had lower Mini Mental State Examination (MMSE) when compared with the patients without SLAD. They had more behavioral symptoms and caused more stress in caregivers as assessed by the Neuropsychiatric Inventory (NPI). Multivariate regression analysis showed SLAD contributed significantly to MMSE, NPI Patient (NPI P) and NPI Care Giver (NPI CG). Among 44 patients with SLAD, 30 (68%) had severe cognitive impairment. They were older and less educated. They had more diabetes and poorer performance in neuropsychiatric tests including Mattis Dementia Rating Scale Initiation/Perseveration subset (MDRS I/P) and Clinical Dementia Rating (CDR). They also had poorer functional outcomes as assessed by Barthel Index (BI) and Instrumental activities of daily living (IADL). CONCLUSIONS: This was the first MRA-based study to take into consideration the clinical, cognitive and functional outcomes in ischemic stroke patients with SLAD. Patients with SLAD had poorer cognitive and functional outcomes when compared to patients without SLAD.


Subject(s)
Brain Ischemia/psychology , Capillaries/pathology , Cerebral Arteries/pathology , Cognition Disorders/etiology , Stroke/psychology , Aged , Anxiety/complications , Anxiety/psychology , Asian People , Brain/pathology , Brain Ischemia/complications , Brain Ischemia/pathology , Carotid Arteries/pathology , Cerebral Angiography , Cerebrovascular Circulation/physiology , Cognition Disorders/pathology , Dementia/psychology , Depression/complications , Depression/psychology , Female , Hong Kong , Humans , Magnetic Resonance Angiography , Magnetic Resonance Imaging , Male , Neuropsychological Tests , Psychiatric Status Rating Scales , Stroke/etiology , Stroke/pathology , Treatment Outcome
20.
Ultrasound Obstet Gynecol ; 37(6): 727-32, 2011 Jun.
Article in English | MEDLINE | ID: mdl-21337662

ABSTRACT

OBJECTIVE: To estimate the prevalence of congenital uterine anomalies in subfertile women and to evaluate their influence on early pregnancy following assisted reproduction treatment (ART). METHODS: We prospectively recruited 1402 subjects undergoing ART over a period of 5 years from 2005 to 2009. Three-dimensional transvaginal sonography was performed in the early follicular phase of the menstrual cycle (days 2-5) and repeated in the late follicular phase (days 10-14) if the shape of the uterine cavity could not be assessed at the first scan. All subjects who conceived following ART were followed up to 12 weeks' gestation. Chi-square test was used to compare the pregnancy rates and miscarriage rates between women shown to have uterine anomalies and those with a normal uterus. RESULTS: One thousand three hundred and eighty-five subjects were included for final analysis after excluding 17 subjects in whom a definitive diagnosis could not be made. While 1201 (86.7%) subjects had a normal uterine cavity, uterine anomalies were demonstrated in 184 (13.3%) subjects. Arcuate uteri represented the commonest anomaly (n = 164 (11.8%)) followed by septate (n = 7 (0.5%)), unicornuate (n = 6 (0.4%)), subseptate (n = 5 (0.4%)), bicornuate (n = 1 (0.1%)) and T-shaped uteri (n = 1 (0.1%)). A total of 440 subjects who underwent ART were followed up. The pregnancy rates in women with arcuate uteri (36/66 (54.5%)) and major uterine anomalies (7/10 (70.0%)) were statistically similar (P = 0.09 and P = 0.11, respectively) to that of the matched controls with normal uteri (158/364 (43.4%)). While first-trimester miscarriage rates were similar (P = 0.81) between the control group (20/158 (12.7%)) and women with arcuate uteri (5/36 (13.9%)), women with major uterine anomalies experienced a higher miscarriage rate (3/7 (42.9%); P = 0.05). CONCLUSIONS: Women who are referred for ART have a high prevalence of congenital uterine anomalies, the most common anomaly being an arcuate uterus. These anomalies are not associated with a reduction in pregnancy rates following ART. However, while the arcuate uterus was not associated with an increase in first-trimester miscarriage, major uterine anomalies seemed to increase the risk of first-trimester miscarriage.


Subject(s)
Pregnancy Rate , Reproductive Techniques, Assisted , Uterus/abnormalities , Abortion, Spontaneous/epidemiology , Adult , Female , Humans , Pregnancy , Pregnancy Outcome , Prospective Studies , Reproductive Techniques, Assisted/statistics & numerical data , Ultrasonography , Uterus/diagnostic imaging
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