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Changsri K, Duangchanda T, Soimanee T, Fuckpo W, Pipatsatitpong D, Akekawatchai C. Distribution and Clinical Significance of Hepatitis B virus A1762T/G1764A Double Mutation in Chronic Hepatitis B Patients: A Cross-Sectional Study. Asian Pac J Cancer Prev 2024; 25:371-377. [PMID: 38415521 DOI: 10.31557/apjcp.2024.25.2.371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Indexed: 02/29/2024] Open
Abstract
BACKGROUND Chronic hepatitis B (CHB) is well-known as a major risk for liver cirrhosis and hepatocellular carcinoma (HCC). The A1762T/G1764A double mutation in the hepatitis B virus genome affects the production of HBe antigen and is established as a predictive marker for progression to HCC. Thus, this study aimed to investigate the prevalence and clinical significance of the mutation in Thai CHB patients. METHODS A cross-sectional study was conducted in 78 Thai CHB patients who were assessed for hepatitis B profiles, HBsAg, HBeAg and anti-HBeAg, transaminitis, liver fibrosis defined by FIB-4 (FIB-4) score and AST to platelet ratio index (APRI), alpha-fetoprotein (AFP) and active hepatitis B status. HBV A1762T/G1764A mutation was examined by SYBR Green I Real-time PCR. Chi-square and Mann-Whiney U tests were performed to determine the association between the mutation and variables. RESULTS The prevalence of patients infected with the A1762T/G1764A mutation was 44.9%. The mutation was associated with HBeAg status (p=0.027) and HBsAg levels (p=0.008), transaminitis (p=0.011), and active hepatitis B (p=0.037), but not liver fibrosis markers, FIB-4 score and APRI, and AFP. Binary logistic regression identified the mutation as a predictive factor of active hepatitis B (OR 3.5, 95%CI, 1.1-11.3, p=0.037). Patients infected with the mutant exhibited significantly higher levels of HBsAg (p=0.011) and HBV viral load (p=0.047), but lower levels of HBeAg (p=0.12) than those infected with the wild-type HBV. CONCLUSION The data indicate the high prevalence of the A1762T/G1764A mutation and its significant association with the severity of Thai CHB patients and the HBV mutation is proposed as a predictive marker of active hepatitis B status in CHB patients.
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Affiliation(s)
- Khaimuk Changsri
- Department of Medical Technology, Faculty of Allied Health Sciences, Thammasat University, Pathum Thani, Thailand
- Thammasat University Research Unit in Diagnostic Molecular Biology of Chronic Diseases related to Cancer (DMB-CDC), Thailand
| | - Thitimonrat Duangchanda
- Department of Medical Technology, Faculty of Allied Health Sciences, Thammasat University, Pathum Thani, Thailand
- Thammasat University Research Unit in Diagnostic Molecular Biology of Chronic Diseases related to Cancer (DMB-CDC), Thailand
| | - Thanawan Soimanee
- Thammasat University Research Unit in Diagnostic Molecular Biology of Chronic Diseases related to Cancer (DMB-CDC), Thailand
| | - Waraporn Fuckpo
- Medical Technology laboratory section, Thammasat University Hospital, Pathum Thani, Thailand
| | - Duangnate Pipatsatitpong
- Department of Medical Technology, Faculty of Allied Health Sciences, Thammasat University, Pathum Thani, Thailand
| | - Chareeporn Akekawatchai
- Department of Medical Technology, Faculty of Allied Health Sciences, Thammasat University, Pathum Thani, Thailand
- Thammasat University Research Unit in Diagnostic Molecular Biology of Chronic Diseases related to Cancer (DMB-CDC), Thailand
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Abstract
Abstract
Background
Serum levels of soluble lectin-like oxidized low-density lipoprotein receptor-1 (sLOX-1) reflect increases in LOX-1 receptor expression associated with inflammation and metabolic disorders.
Objectives
To examine sLOX-1 levels in metabolic syndrome and association of sLOX-1 with classical risk factors, and with metabolic syndrome, a clustering of metabolic disorders associated with cardiovascular risk factors.
Methods
We selected 148 serum samples from patient participants with metabolic syndrome and 206 samples from patients with non-metabolic syndrome as controls, using the modified National Cholesterol Educational Program Adult Treatment Panel III (NCEP-ATP III) criteria.
Results
Levels of sLOX-1 were increased significantly in participants with metabolic syndrome (P < 0.001). Serum sLOX-1 was positively associated with body mass index (BMI), blood pressure, fasting plasma glucose, triglyceride, and total cholesterol, but negatively associated with high-density lipoprotein cholesterol. Analysis of serum sLOX-1 for metabolic syndrome showed 99.03% specificity and 100% sensitivity. The area under the receiver operating characteristic curve was 0.998 (95%CI 0.996-1.001, P < 0.001). A univariate analysis showed sLOX-1 was significantly correlated with metabolic syndrome, but was not after adjustment for sex, age, blood pressure, and BMI. Multivariate regression analysis found that being overweight (82.3; 95%CI 10.7–631.9), hyperglycemia (1.1; 95%CI 1.1–1.2), and hypertriglyceridemia (1.1; 95%CI 1.0–1.1) were significantly correlated with metabolic syndrome. HDL cholesterol was a protective factor (0.96; 95%CI: 0.93–0.99).
Conclusions
Serum sLOX-1 is a suitable biomarker for diagnosis of metabolic syndrome. However, univariate and multivariate analysis suggested that sLOX-1 may be a modulating factor, and not an independent risk factor.
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Affiliation(s)
- Palakorn Puttaruk
- Department of Medical Technology Laboratory , Thammasat University Hospital , Pathum Thani 12120 , Thailand
| | - Duangnate Pipatsatitpong
- Department of Medical Technology , Faculty of Allied Health Sciences , Thammasat University , Pathum Thani , 12120 , Thailand
| | - Pilaiwan Siripurkpong
- Department of Medical Technology , Faculty of Allied Health Sciences , Thammasat University , Pathum Thani 12120 , Thailand
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Pipatsatitpong D, Leelayoova S, Mungthin M, Aunpad R, Naaglor T, Rangsin R. Prevalence and Risk Factors for Blastocystis Infection Among Children and Caregivers in a Child Care Center, Bangkok, Thailand. Am J Trop Med Hyg 2015; 93:310-5. [PMID: 26033017 DOI: 10.4269/ajtmh.14-0492] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2014] [Accepted: 04/11/2015] [Indexed: 11/07/2022] Open
Abstract
In September 2009, a cross-sectional study was conducted to evaluate parasitic infections in a child care center in Khlong Toei, Bangkok, Thailand. Of 503 children and staff members, 258 (51.3%) stool samples and questionnaires were obtained. The most common parasitic infection was Blastocystis sp. (13.6%). Blastocystis sp. subtype 3 was predominantly found (80.0%), followed by subtypes 2 (12.0%) and 1 (8.0%). The prevalence of Blastocystis infection varied among different age groups. The prevalence of Blastocystis infection in non-HIV-infected children aged < 10 and 10-19 years were 14.5% and 10.3%, respectively, which were not significantly different. All 31 HIV-infected children were not infected with Blastocystis sp. The most likely reason could be the result of properly using prevention measures for this specific group.
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Affiliation(s)
- Duangnate Pipatsatitpong
- Department of Medical Technology and Graduate Program in Biomedical Sciences, Faculty of Allied Health Sciences, Thammasat University, Pathum Thani, Thailand; Department of Parasitology, Phramongkutklao College of Medicine, Bangkok, Thailand; Department of Military and Community Medicine, Phramongkutklao College of Medicine, Bangkok, Thailand
| | - Saovanee Leelayoova
- Department of Medical Technology and Graduate Program in Biomedical Sciences, Faculty of Allied Health Sciences, Thammasat University, Pathum Thani, Thailand; Department of Parasitology, Phramongkutklao College of Medicine, Bangkok, Thailand; Department of Military and Community Medicine, Phramongkutklao College of Medicine, Bangkok, Thailand
| | - Mathirut Mungthin
- Department of Medical Technology and Graduate Program in Biomedical Sciences, Faculty of Allied Health Sciences, Thammasat University, Pathum Thani, Thailand; Department of Parasitology, Phramongkutklao College of Medicine, Bangkok, Thailand; Department of Military and Community Medicine, Phramongkutklao College of Medicine, Bangkok, Thailand
| | - Ratchaneewan Aunpad
- Department of Medical Technology and Graduate Program in Biomedical Sciences, Faculty of Allied Health Sciences, Thammasat University, Pathum Thani, Thailand; Department of Parasitology, Phramongkutklao College of Medicine, Bangkok, Thailand; Department of Military and Community Medicine, Phramongkutklao College of Medicine, Bangkok, Thailand
| | - Tawee Naaglor
- Department of Medical Technology and Graduate Program in Biomedical Sciences, Faculty of Allied Health Sciences, Thammasat University, Pathum Thani, Thailand; Department of Parasitology, Phramongkutklao College of Medicine, Bangkok, Thailand; Department of Military and Community Medicine, Phramongkutklao College of Medicine, Bangkok, Thailand
| | - Ram Rangsin
- Department of Medical Technology and Graduate Program in Biomedical Sciences, Faculty of Allied Health Sciences, Thammasat University, Pathum Thani, Thailand; Department of Parasitology, Phramongkutklao College of Medicine, Bangkok, Thailand; Department of Military and Community Medicine, Phramongkutklao College of Medicine, Bangkok, Thailand
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Boontanom P, Pipatsatitpong D, Tan-Ariya P, Mungthin M, Siripattanapipong S, Naaglor T, Leelayoova S. Incidence and risk factors of Giardia duodenalis infection in an orphanage, Thailand. Trop Biomed 2014; 31:525-533. [PMID: 25382480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A cohort study was performed to evaluate the incidence and risk factors of Giardia duodenalis infection in an orphanage in suburban area outside Bangkok, central Thailand. Stool specimens were examined for the presence of G. duodenalis in January 2007, May 2007 and January 2008. Of 892 stool specimens from 481 individuals, simple wet preparation, PBS ethyl-acetate sedimentation and PCR amplification of the SSU-rRNA gene were performed to detect G. duodenalis. Using PCR of the glutamate dehydrogenase gene and sequence analysis, G. duodenalis assemblages were identified. Associated risk factors were analysed using Fisher's exact test which revealed significant infection of G. duodenalis in boys and specific rooms where orphans aged 25-48 months old lived. Genotypic characterization of G. duodenalis revealed that assemblage A subtype AII was the most predominant found in orphans living in the specific rooms, thus the transmission was likely to occur via person-to-person. Other modes of transmission were less likely to occur. This study showed that the incidence rate of Giardia infection gradually decreased significantly after the implementation of health education and appropriate treatment of infected orphans.
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Affiliation(s)
- P Boontanom
- Department of Microbiology, Faculty of Science, Mahidol University, Bangkok 10400, Thailand
| | - D Pipatsatitpong
- Department of Medical Technology, Faculty of Allied Health Sciences, Thammasat University, Khlong Luang, Pathum Thani 12121, Thailand
| | - P Tan-Ariya
- Department of Microbiology, Faculty of Science, Mahidol University, Bangkok 10400, Thailand
| | - M Mungthin
- Department of Parasitology, Phramongkutklao College of Medicine, Ratchawithi Rd., Bangkok 10400, Thailand
| | - S Siripattanapipong
- Department of Parasitology, Phramongkutklao College of Medicine, Ratchawithi Rd., Bangkok 10400, Thailand
| | - T Naaglor
- Department of Parasitology, Phramongkutklao College of Medicine, Ratchawithi Rd., Bangkok 10400, Thailand
| | - S Leelayoova
- Department of Parasitology, Phramongkutklao College of Medicine, Ratchawithi Rd., Bangkok 10400, Thailand
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Boondit J, Pipatsatitpong D, Mungthin M, Taamasri P, Tan-ariya P, Naaglor T, Leelayoova S. Incidence and risk factors of blastocystis infection in orphans at the Babies' Home, Nonthaburi Province, Thailand. J Med Assoc Thai 2014; 97 Suppl 2:S52-S59. [PMID: 25518176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
BACKGROUND Blastocystis infection is one of the most common intestinal protozoan infections reported in Thai population of all age groups for which epidemiological information is important to understand patterns of transmission for developing methods ofprevention and control for each specific group. The authors aimed to study prevalence, incidence and riskfactors associated with Blastocystis infection in orphans and childcare workers. Additionally, subtypes ofBlastocystis were identified MATERIAL AND METHOD A retrospective cohort study of Blastocystis sp. was conducted in orphans aged less than 5 years and their childcare workers at Babies' Home, Nonthaburi Province, Thailand. A base line survey was conducted in December 2009 and afollow-up survey was conducted in April 2010. A total of 336 and 331 stool samples were collected. Blastocystis infection was examined using short-term in vitro cultivation in Jones's medium supplemented with 10% fetal calf serum. To analyze subtypes ofBlastocystis sp., PCR-RFLP of the small subunit ribosomal RNA gene was performed. RESULTS Theprevalence ofBlastocystis infection in December 2009 and April 2010 were 8.1% and 13.3%, respectively The inlcidence rate ofBlastocystis infection was 1.6/100 person-months. Subtype analysis ofBlastocystis sp. in December 2009 and in April 2010 showed that subtype 3 was the most predominant (76% and 76%), followed by subtype 1 (16% and 20%), and unidentified subtype (8% and 4%), respectively. Subtype 3 is of human origin, thus person-to-person transmission is considered a major route ofBlastocystis infection in this population. CONCLUSION Person-to-person transmission of Blastocystis infection in orphans living in the same house had been proposed, thus the prevalence and incidence of Blastocystis infection could be used to reflect the hygienic condition in the orphanage. Infection prevention and control practice can be effectively implemented.
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Kaewklom S, Samosornsuk S, Pipatsatitpong D, Aunpad R. Colicin type 7 produced by majority of Shigella sonnei isolated from Thai patients with diarrhoea. Braz J Microbiol 2014; 44:731-6. [PMID: 24516440 PMCID: PMC3910181 DOI: 10.1590/s1517-83822013000300010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2011] [Accepted: 11/13/2012] [Indexed: 11/24/2022] Open
Abstract
Thirty one out of 153 strains of Shigella sonnei isolated from Thai patients with diarrhoea showed antibacterial activity against S. sonnei by agar well diffusion method. All of them harbor plasmids with the genetic determination of colicin type 7 (Js) gene but without colicin E and colicin U gene. The PCR product obtained from strain 35/44 was shown to be the gene for colicin type 7 lytic protein (cja). The partially purified bacteriocin (PPB) containing colicin type 7 of strain 35/44 was prepared and used for characterization. The antibacterial activity of PPB against a total of 17 selected Gram-positive and Gram-negative bacteria was tested. It was found that PPB of strain 35/44 was active against E. coli O157, S. sonnei and S. boydii. The sensitivity of PPB from this strain to proteinase K, trypsin and α-chymotrypsin suggests the proteinaceous nature of these antimicrobial substances. Therefore, this isolated bacterium can be regarded as bacteriocin producing bacteria. The bacteriocin produced by this isolated S. sonnei was heat stable as evidenced by its ability to maintain the activity at 80 °C for 60 min. In addition, it was stable within a wide range of pH (3–9). The molecular weight of colicin type 7 from isolated S. sonnei strain 35/44 analyzed by SDS-PAGE was 54.4 kDa composing of at least five subunits. It is to our knowledge; the first report of Thai patients with diarrhoea that S. sonnei isolated from them contained colicin type 7.
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Affiliation(s)
- Siriporn Kaewklom
- Graduate Program in Biomedical Sciences, Faculty of Allied Health Sciences, Thammasat University, Rangsit Campus, Klonglaung, Pathumthai, Thailand
| | - Seksun Samosornsuk
- Department of Medical Technology, Faculty of Allied Health Sciences, Thammasat University, Rangsit Campus, Klonglaung, Pathumthai, Thailand
| | - Duangnate Pipatsatitpong
- Department of Medical Technology, Faculty of Allied Health Sciences, Thammasat University, Rangsit Campus, Klonglaung, Pathumthai, Thailand
| | - Ratchaneewan Aunpad
- Graduate Program in Biomedical Sciences, Faculty of Allied Health Sciences, Thammasat University, Rangsit Campus, Klonglaung, Pathumthai, Thailand
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Thathaisong U, Siripattanapipong S, Mungthin M, Pipatsatitpong D, Tan-ariya P, Naaglor T, Leelayoova S. Identification of Blastocystis subtype 1 variants in the Home for Girls, Bangkok, Thailand. Am J Trop Med Hyg 2012; 88:352-8. [PMID: 23166199 DOI: 10.4269/ajtmh.2012.12-0237] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
A cross-sectional study of Blastocystis infection was conducted to evaluate the prevalence, risk factors, and subtypes of Blastocystis at the Home for Girls, Bangkok, Thailand in November 2008. Of 370 stool samples, 118 (31.9%) were infected with Blastocystis. Genotypic characterization of Blastocystis was performed by polymerase chain reaction and sequence analysis of the partial small subunit ribosomal RNA (SSU rRNA) gene. Subtype 1 was the most predominant (94.8%), followed by subtype 6 (3.5%) and subtype 2 (1.7%). Sequence analyses revealed nucleotide polymorphisms for Blastocystis subtype 1, which were described as subtype 1/variant 1, subtype 1/variant 2. Blastocystis subtype 1/variant 1 was the most predominant infection occurring in almost every house. The results showed that subtype analysis of Blastocystis was useful for molecular epidemiological study.
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Affiliation(s)
- Umaporn Thathaisong
- Department of Microbiology, Faculty of Science, Burapha University, Chonburi, Thailand.
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Pipatsatitpong D, Rangsin R, Leelayoova S, Naaglor T, Mungthin M. Incidence and risk factors of Blastocystis infection in an orphanage in Bangkok, Thailand. Parasit Vectors 2012; 5:37. [PMID: 22330427 PMCID: PMC3299613 DOI: 10.1186/1756-3305-5-37] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2011] [Accepted: 02/14/2012] [Indexed: 12/03/2022] Open
Abstract
BACKGROUND Blastocystis sp. is one of the most common intestinal protozoa in humans. Unlike other intestinal parasitic infections such as giardiasis and cryptosporidiosis, the epidemiology of blastocystosis in children who live in crowded settings such as day-care centers and orphanages has been rarely explored. METHODS A retrospective cohort study was conducted to evaluate incidence and risk factors of Blastocystis infection in an orphanage every two consecutive months during April 2003 to April 2004, in Bangkok, Thailand. Blastocystis sp. was identified using direct simple smear, and in vitro cultivation in Jones' medium. RESULTS The incidence rate was 1.8/100 person-months and the independent risk factors associated with Blastocystis infection were age, nutritional status and orphans living in the room where their childcare workers were infected. CONCLUSIONS Person-to-person transmission was most likely to occur either from orphans to childcare workers or from childcare workers to orphans living in the same room. Universal precautions such as regular hand washing and careful handling of fecally contaminated materials are indicated.
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Affiliation(s)
- Duangnate Pipatsatitpong
- Biomedical Sciences Program, Faculty of Allied Health Sciences, Thammasat University, Khlong Luang, Pathum Thani 12121, Thailand
| | - Ram Rangsin
- Department of Military and Community Medicine, Phramongkutklao College of Medicine, Ratchathewi, Bangkok 10400, Thailand
| | - Saovanee Leelayoova
- Department of Parasitology, Phramongkutklao College of Medicine, Ratchathewi, Bangkok 10400, Thailand
| | - Tawee Naaglor
- Department of Parasitology, Phramongkutklao College of Medicine, Ratchathewi, Bangkok 10400, Thailand
| | - Mathirut Mungthin
- Department of Parasitology, Phramongkutklao College of Medicine, Ratchathewi, Bangkok 10400, Thailand
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