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  1. Article ; Online: Progress in the elimination of lymphatic filariasis in the Western Pacific Region: successes and challenges.

    Yajima, Aya / Ichimori, Kazuyo

    International health

    2020  Volume 13, Issue Suppl 1, Page(s) S10–S16

    Abstract: The Western Pacific Region is the largest and most diverse region in the world, made up of 37 countries and territories in the Pacific, Oceania and parts of Asia, with a population of more than 1.9 billion people stretching over an area from China and ... ...

    Abstract The Western Pacific Region is the largest and most diverse region in the world, made up of 37 countries and territories in the Pacific, Oceania and parts of Asia, with a population of more than 1.9 billion people stretching over an area from China and Mongolia in the north to New Zealand in the south. In 1999, 22 countries and territories in the Pacific joined together and launched the Pacific Programme to Eliminate Lymphatic Filariasis. Shortly after, the Global Programme to Eliminate Lymphatic Filariasis was launched in 2000. In 2004, 12 countries in the Asia subregion of the Western Pacific Region and Southeast Asian Region joined and developed the Mekong-Plus Strategic Plan for Elimination of Lymphatic Filariasis. Since then, significant efforts have been made by all endemic countries, with annual mass drug administration (MDA) as a principal strategy, through strong partnership with the WHO and other donors and partners. As a result, by the end of 2019, 10 of 22 endemic countries in the region, including 8 of 16 countries in the Pacific and 2 countries in the Asia subregion, achieved WHO validation for elimination of lymphatic filariasis (LF) as a public health problem. All the other countries are either progressing with post-MDA surveillance or accelerating efforts by adoption of the new triple drug therapy strategy and enhancement of MDA campaigns to tackle persistent transmission. Some 85% of the originally endemic implementation units have stopped MDA and the number of people requiring MDA for LF in the Western Pacific Region was reduced by 72% from 2000 to 2018. This paper reviews the progress, key success factors and remaining challenges and indicates the way forward to achieve LF elimination in the Western Pacific Region.
    MeSH term(s) Asia ; China/epidemiology ; Elephantiasis, Filarial/drug therapy ; Elephantiasis, Filarial/epidemiology ; Elephantiasis, Filarial/prevention & control ; Filaricides/therapeutic use ; Humans ; Mongolia ; New Zealand
    Chemical Substances Filaricides
    Language English
    Publishing date 2020-12-21
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 2526175-7
    ISSN 1876-3405 ; 1876-3413
    ISSN (online) 1876-3405
    ISSN 1876-3413
    DOI 10.1093/inthealth/ihaa087
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Finishing the task of eliminating neglected tropical diseases (NTDs) in WHO South-East Asia Region: promises kept, challenges, and the way forward.

    Yajima, Aya / Lin, Zaw / Mohamed, Ahmed Jamsheed / Dash, A P / Rijal, Suman

    The Lancet regional health. Southeast Asia

    2023  Volume 18, Page(s) 100302

    Abstract: Globally 20 Neglected tropical diseases (NTDs) are prioritized by World Health Organization (WHO), of which 15 are present in the South-East Asia Region (SEAR) with all 11 countries being affected. As the region bears 54% of the global burden, "Finishing ...

    Abstract Globally 20 Neglected tropical diseases (NTDs) are prioritized by World Health Organization (WHO), of which 15 are present in the South-East Asia Region (SEAR) with all 11 countries being affected. As the region bears 54% of the global burden, "Finishing the task of eliminating neglected tropical diseases and other diseases on the verge of elimination" was identified as a regional flagship priority in 2014 with focus on lymphatic filariasis (LF), kala-azar, yaws, trachoma, and leprosy. Intensified efforts have been made to raise and sustain political commitment and momentum among partners innovate tools, interventions and strategies to accelerate elimination, and establish the process and support countries to accelerate and validate achievement of elimination targets. Seven countries have verified or validated for having eliminated at least one NTD since 2016, including yaws, LF and trachoma. Between 2010 and 2020, the number of people requiring interventions against NTDs in the South-East Asia Region reduced by 20%. The priorities in the next decade are to strengthen last-mile efforts to eliminate identified NTDs, sustain it and to use the lessons learnt to eliminate other NTDs.
    Funding: None.
    Language English
    Publishing date 2023-10-29
    Publishing country England
    Document type Journal Article ; Review
    ISSN 2772-3682
    ISSN (online) 2772-3682
    DOI 10.1016/j.lansea.2023.100302
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Evaluation of Crude and Recombinant Antigens of

    Angeles, Jose Ma M / Wanlop, Atcharaphan / Dang-Trinh, Minh-Anh / Kirinoki, Masashi / Kawazu, Shin-Ichiro / Yajima, Aya

    Diagnostics (Basel, Switzerland)

    2023  Volume 13, Issue 2

    Abstract: Asian schistosomiasis caused by the blood ... ...

    Abstract Asian schistosomiasis caused by the blood fluke
    Language English
    Publishing date 2023-01-04
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2662336-5
    ISSN 2075-4418
    ISSN 2075-4418
    DOI 10.3390/diagnostics13020184
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: Current advances in serological and molecular diagnosis of Schistosoma mekongi infection.

    Macalanda, Adrian Miki C / Wanlop, Atcharaphan / Ona, Kevin Austin L / Galon, Eloiza May S / Khieu, Virak / Sayasone, Somphou / Yajima, Aya / Angeles, Jose Ma M / Kawazu, Shin-Ichiro

    Tropical medicine and health

    2024  Volume 52, Issue 1, Page(s) 32

    Abstract: Schistosomiasis, a neglected tropical disease, caused by blood flukes belonging to the genus Schistosoma; it persists as a public health problem in selected regions throughout Africa, South America, and Asia. Schistosoma mekongi, a zoonotic schistosome ... ...

    Abstract Schistosomiasis, a neglected tropical disease, caused by blood flukes belonging to the genus Schistosoma; it persists as a public health problem in selected regions throughout Africa, South America, and Asia. Schistosoma mekongi, a zoonotic schistosome species endemic to the Mekong River in Laos and Cambodia, is one of the significant causes of human schistosomiasis along with S. japonicum, S. mansoni, S. haematobium and S. intercalatum. Since its discovery, S. mekongi infection has been highly prevalent in communities along the Mekong River. Although surveillance and control measures have shown success in recent years, more robust diagnostic tools are still needed to establish more efficient control and prevention strategies to achieve and sustain an elimination status. Diagnosis of S. mekongi infection still relies on copro-parasitological techniques, commonly made by Kato-Katz stool examination. Serological techniques such as enzyme-linked immunosorbent assay (ELISA) may also be applicable but in a limited setting. Targeted molecular and serological tools specific to the species, on the other hand, have been limited. This is due, in part, to the limited research and studies on the molecular biology of S. mekongi since genome information of this species has not yet been released. In this review, current advances, and gaps and limitations in the molecular and immunological diagnosis of S. mekongi are discussed.
    Language English
    Publishing date 2024-04-22
    Publishing country Japan
    Document type Journal Article ; Review
    ZDB-ID 2209835-5
    ISSN 1349-4147 ; 1348-8945
    ISSN (online) 1349-4147
    ISSN 1348-8945
    DOI 10.1186/s41182-024-00598-0
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Cross-reaction of POC-CCA urine test for detection of Schistosoma mekongi in Lao PDR: a cross-sectional study.

    Homsana, Anousin / Odermatt, Peter / Southisavath, Phonesavanh / Yajima, Aya / Sayasone, Somphou

    Infectious diseases of poverty

    2020  Volume 9, Issue 1, Page(s) 114

    Abstract: Background: The point-of-care circulating cathodic antigen (POC-CCA) test is increasingly used as a rapid diagnostic method for Schistosoma mansoni infection. The test has good sensitivity, although false positive results have been reported among ... ...

    Abstract Background: The point-of-care circulating cathodic antigen (POC-CCA) test is increasingly used as a rapid diagnostic method for Schistosoma mansoni infection. The test has good sensitivity, although false positive results have been reported among pregnant women and patients with urine infections and hematuria. We validated the POC-CCA test's ability to diagnose Schistosoma mekongi infection in Lao People's Democratic Republic (Lao PDR), where S. mekongi is endemic. Of particular interest was the test's specificity and possible cross-reactivity with other helminth infections.
    Methods: We conducted a cross-sectional study of children and adults in the provinces of Champasack (Schistosoma mekongi and Opisthorchis viverrini endemic), Savannakhet (O. viverrini endemic) and Luang Prabang (soil-transmitted helminths endemic) between October 2018 and April 2019. POC-CCA and urine dipstick tests were administered to all study participants, while an additional pregnancy test was offered to women. Two stool samples were collected from participants and examined with a Kato-Katz test (two smears per stool). Logistic regression was used to associate potential confounding factors (predictors) with POC-CCA test results (outcome).
    Results: In S. mekongi-endemic Champasack, 11.5% (n = 366) and 0.5% (n = 2) of study participants had positive POC-CCA and Kato-Katz test results, respectively. Only one of the two Kato-Katz positive patients was also POC-CCA positive. In Champasack and Luang Prabang, where S. mekongi is not endemic, the POC-CCA test yielded (presumably) false positive results for 6.0% (n = 22) and 2.5% (n = 9) of study participants, respectively, while all of the Kato-Katz tests were negative. POC-CCA positive test results were significantly associated with O. viverrini infection (1.69, 95% confidence interval (CI): 1.02-2.77, P = 0.042), increased leukocytes (adjusted Odds Ratio (aOR) = 1.58, 95% CI: 1.15-2.17, P = 0.005) and hematuria (aOR = 1.50, 95% CI: 1.07-2.10, P = 0.019) if the observed trace was counted as a positive test result. Two pregnant women from Champasack province had POC-CCA positive tests.
    Conclusions: We observed a cross-reaction between the POC-CCA test and O. viverrini infection. To some extent, we can confirm previous observations asserting that POC-CCA provides false positive results among patients with urinary tract infections and hematuria. In S. mekongi-endemic areas, POC-CCA can be applied cautiously for surveillance purposes, keeping in mind the considerable risk of false positive results and its unknown sensitivity.
    MeSH term(s) Adolescent ; Adult ; Animals ; Antigens, Helminth/isolation & purification ; Child ; Cross-Sectional Studies ; Feces/parasitology ; Female ; Humans ; Laos/epidemiology ; Male ; Middle Aged ; Opisthorchis/immunology ; Opisthorchis/isolation & purification ; Point-of-Care Testing ; Schistosoma/immunology ; Schistosoma/isolation & purification ; Schistosomiasis/diagnosis ; Schistosomiasis/urine ; Sensitivity and Specificity
    Chemical Substances Antigens, Helminth
    Language English
    Publishing date 2020-08-12
    Publishing country England
    Document type Comparative Study ; Journal Article ; Validation Study
    ZDB-ID 2689396-4
    ISSN 2049-9957 ; 2049-9957
    ISSN (online) 2049-9957
    ISSN 2049-9957
    DOI 10.1186/s40249-020-00733-z
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Diagnostic test accuracy for detecting Schistosoma japonicum and S. mekongi in humans: A systematic review and meta-analysis.

    Rahman, Md Obaidur / Sassa, Miho / Parvin, Natasha / Islam, Md Rashedul / Yajima, Aya / Ota, Erika

    PLoS neglected tropical diseases

    2021  Volume 15, Issue 3, Page(s) e0009244

    Abstract: Background: Most of national schistosomiasis elimination programmes in Asia are relying on stool examination, particularly Kato Katz stool examination technique for regular transmission monitoring. However, the Kato-Katz technique has shown low ... ...

    Abstract Background: Most of national schistosomiasis elimination programmes in Asia are relying on stool examination, particularly Kato Katz stool examination technique for regular transmission monitoring. However, the Kato-Katz technique has shown low sensitivity for the detection of light-intensity infections, and therefore highly sensitive diagnostic tools are urgently required to monitor prevalence of infection in low transmission settings. The objective of this systematic review was to evaluate and synthesize the performance of diagnostic tests for detecting Schistosoma japonicum and S. mekongi infection in people living in endemic areas.
    Methodology/principal findings: We comprehensively searched these nine electronic databases and other resources until July 2019, with no language or publication limits: PubMed, EMBASE, MEDLINE, Web of Science, BIOSIS Citation Index, HTA, CINAHL PLUS, The Cochrane Library, and PsycINFO. We included original studies that assessed diagnostic performance using antibody, antigen, and molecular tests with stool examination test as a reference standard. Two reviewers independently extracted a standard set of data and assessed study quality. We estimated the pooled estimates of sensitivity and specificity for each index test. We used diagnostic odds ratio to determine the overall accuracy and hierarchical summary receiver operating characteristics (HSROC) curve to assess the index tests performance. Fifteen studies (S. japonicum [n = 13] and S. mekongi [n = 2]) testing 15,303 participants were included in the review. Five studies reported performance of enzyme-linked immunosorbent assay (ELISA), seven studies reported indirect hemagglutination assay (IHA), and four studies reported polymerase chain reaction (PCR) for detecting S. japonicum. The pooled sensitivity and specificity were 0.93 (95% CI: 0.84-0.98) and 0.40 (95% CI: 0.29-0.53) for ELISA, 0.97 (95% CI: 0.90-0.99) and 0.66 (95% CI: 0.58-0.73) for IHA, and 0.89 (95% CI: 0.71-0.96) and 0.49 (95% CI: 0.29-0.69) for PCR respectively. A global summary indicated the best performance for IHA, closely followed by ELISA. We were unable to perform meta-analysis for S. mekongi due to insufficient number of studies.
    Conclusions/significance: IHA showed the highest detection accuracy for S. japonicum. Further studies are needed to determine the suitable diagnostic methods to verify the absence of transmission of S. mekongi and also to compare detection accuracy against more sensitive reference standards such as PCR.
    MeSH term(s) Animals ; Enzyme-Linked Immunosorbent Assay ; Fluorescent Antibody Technique, Indirect ; Humans ; Polymerase Chain Reaction ; Schistosoma/isolation & purification ; Schistosoma japonicum/isolation & purification
    Language English
    Publishing date 2021-03-17
    Publishing country United States
    Document type Journal Article ; Meta-Analysis ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S. ; Systematic Review
    ZDB-ID 2429704-5
    ISSN 1935-2735 ; 1935-2727
    ISSN (online) 1935-2735
    ISSN 1935-2727
    DOI 10.1371/journal.pntd.0009244
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Benefit of home parenteral nutrition (HPN) and chemotherapy in patients with invasive lobular carcinoma developed peritoneal metastases.

    Inoue, Masayuki / Kimura, Ayako / Oka, Tomomi / Yajima, Aya / Higuchi, Yudai / Endo, Tatsuki / Watanabe, Hideki / Nakagomi, Hiroshi

    International cancer conference journal

    2022  Volume 11, Issue 2, Page(s) 147–151

    Abstract: The benefit of home parenteral nutrition (HPN) for patients with malnutrition due to peritoneal metastasis depends on the type of cancer. During the period 1999-2020, we treated 460 patients with metastatic and stage 4 breast cancer, 23 of whom were ... ...

    Abstract The benefit of home parenteral nutrition (HPN) for patients with malnutrition due to peritoneal metastasis depends on the type of cancer. During the period 1999-2020, we treated 460 patients with metastatic and stage 4 breast cancer, 23 of whom were invasive lobular carcinoma (ILC). Of the 23 patients with ILC, 13 (57%) developed peritoneal metastasis, and 11 died of progression of peritoneal metastasis. Among these 11 patients, 2 patients who underwent surgery due to bowel obstruction, had no improvement, and died 1-4 months after surgery. The prognosis of the other 7 patients under BSC alone was poor, survival time were ranging from 1 to 5 months. The remaining two patients who were able to continue outpatient chemotherapy under HPN were able to prolong their survival time by 18 months and 26 months, respectively. We need to recognize that HPN and chemotherapy may prolong survival time in patients with peritoneal metastasis of ILC, and determine the indication for HPN based on the non-peritoneal life-threatening metastasis, length of treatment, availability of support for HPN management and outpatient chemotherapy, and the patient's willingness to accept it.
    Language English
    Publishing date 2022-03-01
    Publishing country Singapore
    Document type Case Reports
    ISSN 2192-3183
    ISSN (online) 2192-3183
    DOI 10.1007/s13691-022-00539-w
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Cystic degeneration during neo-adjuvant chemotherapy predicts squamous metaplasia of triple negative breast cancer: report of two cases.

    Inoue, Masayuki / Kimura, Ayako / Oka, Tomomi / Yajima, Aya / Higuchi, Yudai / Endo, Tatsuki / Watanabe, Hideki / Nakagomi, Hiroshi / Oyama, Toshio

    International cancer conference journal

    2022  Volume 11, Issue 4, Page(s) 247–252

    Abstract: Neo-adjuvant chemotherapy (NAC) has become a standard treatment for advanced breast cancer because of the advantage of monitoring drug sensitivity and enabling breast-conserving therapy. The changes during NAC are also important to know the biological ... ...

    Abstract Neo-adjuvant chemotherapy (NAC) has become a standard treatment for advanced breast cancer because of the advantage of monitoring drug sensitivity and enabling breast-conserving therapy. The changes during NAC are also important to know the biological characteristics of the tumor. We experienced two cases with cystic degeneration and enhancement of the cyst wall during NAC for triple negative breast cancer (TNBC). They were diagnosed to have breast cancer with squamous metaplasia. In case 1, a 37-year-old woman with right breast cancer diagnosed as TNBC, T3N3M0, Stage 3b was treated with NAC. MRI showed a cystic degeneration with a diameter of 3.5 cm and enhancement of the cyst wall, and the other nodules were extinguished. The histopathological finding of the surgical specimen revealed solid tubular carcinoma with squamous metaplasia. In case 2, a 58-year-old woman with right breast cancer diagnosed as HER2 enriched subtype, T2N0M0 stage 2 was treated with NAC containing trastuzumab. The post-NAC MRI showed extinguishment of the mass in the right breast, but showed a cystic lesion with 24 mm in diameter and enhancement of its wall in the left breast. She underwent breast conserving surgery for bilateral breast cancer, and histopathological finding of the surgical specimen indicated complete remission of right breast cancer and squamous cell carcinoma developed in the left breast. These changes are impressive and remind us that there are metaplastic changes (especially for squamous metaplasia) with resistance to chemotherapy.
    Language English
    Publishing date 2022-06-17
    Publishing country Singapore
    Document type Case Reports
    ISSN 2192-3183
    ISSN (online) 2192-3183
    DOI 10.1007/s13691-022-00553-y
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  9. Article ; Online: A long-term survival case with recurrent esophageal adenosquamous carcinoma.

    Matsuoka, Koichi / Hada, Masao / Ohmori, Hayato / Yajima, Aya / Nadaya, Tatsunori / Watanabe, Hideki / Nakagomi, Hiroshi / Oyama, Toshio

    International cancer conference journal

    2021  Volume 10, Issue 3, Page(s) 191–196

    Abstract: We experienced an extremely rare case of recurrent esophageal adenosquamous carcinoma showing cutis, bone and adrenal gland metastases. Furthermore, the patient showed complete remission by chemotherapy and irradiation, with a long-term survival of over ... ...

    Abstract We experienced an extremely rare case of recurrent esophageal adenosquamous carcinoma showing cutis, bone and adrenal gland metastases. Furthermore, the patient showed complete remission by chemotherapy and irradiation, with a long-term survival of over 8 years. A 46-year-old man with esophago-gastric junction cancer of clinical stage II was administered two cycles of neo-adjuvant chemotherapy with FP (5FU 800 mg/mm
    Language English
    Publishing date 2021-03-14
    Publishing country Singapore
    Document type Case Reports
    ISSN 2192-3183
    ISSN (online) 2192-3183
    DOI 10.1007/s13691-021-00473-3
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  10. Article ; Online: Corneal pannus, Herbert's pits and conjunctival inflammation in older children in Papua New Guinea.

    Cochrane, Gillian M / Mangot, Magdelene / Houinei, Wendy / Susapu, Melinda / Cama, Anasaini / Le Mesurier, Richard / Webster, Sara / Hillgrove, Tessa / Barton, Jaki / Butcher, Robert / Harding-Esch, Emma M / Mabey, David / Bakhtiari, Ana / Müller, Andreas / Yajima, Aya / Solomon, Anthony W / Kaldor, John / Koim, Samuel Peter / Ko, Robert /
    Garap, Jambi

    Ophthalmic epidemiology

    2024  , Page(s) 1–8

    Abstract: Purpose: The prevalence of trachomatous inflammation-follicular (TF) in Papua New Guinea (PNG) suggests antibiotic mass drug administration (MDA) is needed to eliminate trachoma as a public health problem but the burden of trichiasis is low. As a result, ...

    Abstract Purpose: The prevalence of trachomatous inflammation-follicular (TF) in Papua New Guinea (PNG) suggests antibiotic mass drug administration (MDA) is needed to eliminate trachoma as a public health problem but the burden of trichiasis is low. As a result, WHO issued bespoke recommendations for the region. If ≥ 20% of 10-14-year-olds have both any conjunctival scarring (C1 or C2 or C3) and corneal pannus and/or Herbert's pits, MDA should be continued. Equally, if ≥ 5% of that group have both moderate/severe conjunctival scarring (C2 or C3) and corneal pannus and/or Herbert's pits, MDA should be continued.
    Methods: We identified 14 villages where > 20% of 1-9-year-olds had TF during baseline mapping undertaken 4 years and 1 month previously. Every child aged 10-14 years in those villages was eligible to be examined for clinical signs of corneal pannus, Herbert's pits and conjunctival scarring. A grading system that built on existing WHO grading systems was used.
    Results: Of 1,293 resident children, 1,181 (91%) were examined. Of 1,178 with complete examination data, only one (0.08%) individual had concurrent scarring and limbal signs.
    Conclusions: The WHO-predefined criteria for continuation of MDA were not met. Ongoing behavioural and environmental improvement aspects of the SAFE strategy may contribute to integrated NTD control. Surveillance methods should be strengthened to enable PNG health authorities to identify future changes in disease prevalence.
    Language English
    Publishing date 2024-02-08
    Publishing country England
    Document type Journal Article
    ZDB-ID 1213070-9
    ISSN 1744-5086 ; 0928-6586
    ISSN (online) 1744-5086
    ISSN 0928-6586
    DOI 10.1080/09286586.2023.2273507
    Database MEDical Literature Analysis and Retrieval System OnLINE

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