Displaying publications 1 - 20 of 94 in total

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  1. Wan Adnan WF, Shamsudin F, Mohamad Zon E
    Eur J Obstet Gynecol Reprod Biol, 2021 Mar;258:467-469.
    PMID: 33483151 DOI: 10.1016/j.ejogrb.2020.12.007
    Matched MeSH terms: Placenta Accreta*
  2. LLEWELLYN-JONES D
    Med J Malaya, 1958 Sep;13(1):38-42.
    PMID: 13589367
    Matched MeSH terms: Placenta Previa*
  3. RODDIE TW
    Med J Malaya, 1957 Sep;12(1):379-83.
    PMID: 13492809
    Matched MeSH terms: Placenta Previa*
  4. Hayati AR, Khong TY, Zainul R
    Malays J Pathol, 1998 Dec;20(2):99-102.
    PMID: 10879270
    144 placentas were sampled from all cases of stillbirth weighing 500 g and above seen over a period of thirteen months in the UKM Unit of the Maternity Hospital, Kuala Lumpur. Sampling was limited to 1-3 blocks per placenta for histological study. Placental abnormalities were found in 121 (85%) placentas, 78 of which had definite lesions known to contribute to foetal death while the remainder showed lesions suggestive of an underlying disease. This study supports the usefulness of limited sampling of the placenta in the face of unavailability of complete placental examination and autopsy for assessment of the cause of stillbirth.
    Matched MeSH terms: Placenta/pathology*; Placenta Diseases/pathology
  5. Tan YL, Suharjono H, Lau NL, Voon HY
    Med J Malaysia, 2016 Jun;71(3):111-6.
    PMID: 27495883
    The contemporary obstetrician is increasingly put to the test by rising numbers of pregnancies with morbidly adherent placenta. This study illustrates our experience with prophylactic bilateral internal iliac artery occlusion as part of its management.
    Matched MeSH terms: Placenta Accreta*
  6. Sen DK
    Med J Malaysia, 1977 Sep;32(1):96-9.
    PMID: 609354
    Matched MeSH terms: Placenta/anatomy & histology*; Placenta/pathology; Placenta Diseases/pathology
  7. Roziana R, Kamarul Azhar K, Lau JH, Aina MAA, Nadia R, Siti Nordiana A, et al.
    Med J Malaysia, 2019 04;74(2):128-132.
    PMID: 31079123
    OBJECTIVE: To analyse the clinical characteristics of patients with morbidly adherent placenta (MAP). Findings of this study will be used to identify patients at risk of MAP and to outline the best management strategy to deal with this devastating condition.

    METHODS: Delivery records in Hospital Sultanah Nur Zahirah, Terengganu from 1st. January 2016 until 31st. December 2016 were reviewed and analysed.

    RESULTS: Out of the 15,837 deliveries, eight cases of MAP were identified. Six out of eight patients had previous caesarean scar with concomitant placenta praevia, the other two patients had previous caesarean scar with history of placenta praevia in previous pregnancies. Seven out of eight cases were suspected to have MAP based on risk factors. Correct diagnosis was made by ultrasound in five patients, all with histologically confirmed moderate/severe degree of abnormal placentation. The other two cases of 'unlikely MAP', demonstrated segmental MAP intra-operatively with histologically confirmed milder degree of abnormal placentation. Total intraoperative blood loss ranged from 0.8 to 20 litres. Prophylactic internal iliac artery balloon occlusion was associated with significantly less blood loss.

    CONCLUSION: Antenatal diagnosis is essential in outlining the best management strategy in patients with MAP. Ultrasound may not be accurate in ruling out lower degree of MAP. Apart from having a scarred uterus with concomitant placenta praevia, history of having placenta praevia in previous pregnancy is also a risk factor for MAP. Prophylactic internal iliac artery balloon occlusion is associated with significantly less blood loss and should be considered in cases suspected with MAP.

    Matched MeSH terms: Placenta/abnormalities*; Placenta Accreta/diagnosis*; Placenta Accreta/therapy
  8. Nur Azurah AG, Wan Zainol Z, Lim PS, Shafiee MN, Kampan N, Mohsin WS, et al.
    ScientificWorldJournal, 2014;2014:270120.
    PMID: 25478587 DOI: 10.1155/2014/270120
    To examine the factors associated with placenta praevia in primigravidas and also compare the pregnancy outcomes between primigravidas and nonprimigravidas.
    Matched MeSH terms: Placenta Previa/pathology; Placenta Previa/surgery*
  9. Sofiah S, Fung YC
    Med J Malaysia, 2009 Dec;64(4):298-302.
    PMID: 20954554 MyJurnal
    The aim of this study is to evaluate the clinical risk factors, accuracy of antenatal ultrasound for diagnosis, and the effect of these on pregnancy outcome. It is a retrospective study looking at cases which had hysterectomy following vaginal or caesarean section deliveries from 1993 to 2005. Data regarding the maternal demographic characteristics, number of previous CS, number of previous termination/curettage, antenatal scan findings (state features) and the gestation at which accreta was first suspected/diagnosed, MRI scan findings, pregnancy outcome (need for hysterectomy, amount of blood loss, amount of transfusion, length of ICU and hospital stay, other maternal complications, and neonatal outcome) were collected and evaluated. There were a total of 40 cases diagnosed to have abnormal placental attachment and majority of these were actually diagnosed antenatally by sonography. Visualisation of an absence or thinning of hypoechoic myometrial zone had the highest sensitivity to detect placenta accreta followed by intraplacental lacunae, focal mass tissue elevation and disruption of uterine serosal bladder wall.
    Matched MeSH terms: Placenta Accreta/diagnosis; Placenta Accreta/etiology*
  10. Wan Masliza WD, Bajuri MY, Hassan MR, Naim NM, Shuhaila A, Das S
    Clin Ter, 2017 10 19;168(5):e283-e289.
    PMID: 29044348 DOI: 10.7417/T.2017.2021
    BACKGROUND: The placenta is a most interesting but unfortunately often ignored and misunderstood organ. Placental abnormalities, therefore, can be an "early warning system" for fetal problems. A complete prenatal sonographic examination of the placenta is an essential component as its abnormalities can have a direct effect on fetal or maternal outcomes, obstetrical management and future fertility.

    OBJECTIVE: To determine whether any association exists between the finding of an increased thickness of placenta, abnormal placenta shape, placental calcification, placental lake and abnormal cord insertion site at 20-22 and 30-32 weeks gestation with an increased risk of uteroplacental complications or a poor pregnancy outcome.

    METHODOLOGY: A real-time ultrasound was used at the time of detail scan (at 20-22 weeks gestation) and at 30-32 weeks gestation to look for placenta appearance, fetal growth and anomaly. The main outcome measures were risk of hypertension disease in pregnancy, fetal growth restriction and poor fetal outcomes such as low Apgar score and low cord pH.

    RESULT: The majority of the participants were Malay (77.9%). Abnormal placenta found at both gestations were placental lakes and thickness, and only one case had marginal cord insertion. Approximately 6% of the cases were confirmed placenta previa. No abnormal shape or abnormal calcification found at both gestations. About 10% patient developed hypertensive disease in pregnancy, 15% of the fetus was found to have growth restriction and another 16% have low umbilical cord pH. Majority of them delivered at term (90%) and via vaginal delivery (81%). There was no significance between presence of abnormal placental lake and thickness at both gestations with the maternal and fetal outcome.

    CONCLUSION: Presence of abnormal placental thickness and lakes at 30-32 weeks scan associated with maternal hypertensive disease, fetal growth restriction and low umbilical cord pH, however these were not statistically significant.

    Matched MeSH terms: Placenta/abnormalities*; Placenta Diseases
  11. Macdonald AA, Bosma AA
    Placenta, 1985 1 1;6(1):83-91.
    PMID: 3991477
    We examined the gross and microscopic anatomy of placental tissues and umbilical cords from six species representing the three living families of the Suina. These species included, of the Suidae, the wart hog (Phacochoerus aethiopicus), the giant forest hog (Hylochoerus meinertzhageni), the domestic pig (Sus scrofa), and the banded pig of Malaysia (Sus scrofa vittatus); of the Tayassuidae, the white-lipped peccary (Tayassu pecari); of the Hippopotamidae, the hippopotamus (Hippopotamus amphibius) and the pigmy hippopotamus (Choeropsis liberiensis). All these species have a diffuse epitheliochorial placenta. The chorion is folded, and has on its surface rows of shallow ripples or villi, interrupted by round, oval or irregularly shaped areolae. Placental capillaries indent the epithelial layer covering the tops and sides of the interareolar villi, but not the columnar cell layer lying in the troughs between these villi or covering the areolae. Cuboidal cells cover the crests of the villi in the Suidae and Hippopotamidae, whereas in the Tayassuidae the epithelium is syncytial in appearance. The similarities in placental structure between the six species are more apparent than the differences. Suidae and Tayassuidae have smooth umbilical cords containing two arteries and one vein; those of the Hippopotamidae are pustule-encrusted and contain two arteries and two veins.
    Matched MeSH terms: Placenta/anatomy & histology*; Placenta/ultrastructure
  12. Hong J, Kumar S
    Clin Sci (Lond), 2023 Apr 26;137(8):579-595.
    PMID: 37075762 DOI: 10.1042/CS20220300
    Fetal growth restriction (FGR) leading to low birth weight (LBW) is a major cause of neonatal morbidity and mortality worldwide. Normal placental development involves a series of highly regulated processes involving a multitude of hormones, transcription factors, and cell lineages. Failure to achieve this leads to placental dysfunction and related placental diseases such as pre-clampsia and FGR. Early recognition of at-risk pregnancies is important because careful maternal and fetal surveillance can potentially prevent adverse maternal and perinatal outcomes by judicious pregnancy surveillance and careful timing of birth. Given the association between a variety of circulating maternal biomarkers, adverse pregnancy, and perinatal outcomes, screening tests based on these biomarkers, incorporating maternal characteristics, fetal biophysical or circulatory variables have been developed. However, their clinical utility has yet to be proven. Of the current biomarkers, placental growth factor and soluble fms-like tyrosine kinase 1 appear to have the most promise for placental dysfunction and predictive utility for FGR.
    Matched MeSH terms: Placenta/metabolism; Placenta Growth Factor
  13. Blake NM, Kirk RL, Matsumoto H
    Jinrui Idengaku Zasshi, 1969 Mar;13(4):243-8.
    PMID: 5815017
    Matched MeSH terms: Placenta/enzymology*
  14. Ng KH, Sinnathuray TA, Lau KS
    Med J Malaya, 1972 Mar;26(3):159-63.
    PMID: 5031010
    Matched MeSH terms: Placenta*
  15. MENG LY
    Med J Malaya, 1958 Sep;13(1):74-9.
    PMID: 13589374
    Matched MeSH terms: Placenta*
  16. Ismail NI
    Front Immunol, 2023;14:1166451.
    PMID: 37051244 DOI: 10.3389/fimmu.2023.1166451
    One would expect maternal immune cells to attack the invading trophoblast as the placenta is semi-allogenic. However, they appear to cooperate with the trophoblast in disrupting the arterial wall which has been determined in several studies. uNK cells are a particular type of immune cell that appears to play a role in pregnancy. As in pregnancy, the key contributors to trophoblast invasion appear to be a unique combination of genes, which appear to regulate multiple components of the interactions between placental and maternal cells, called HLA class 1b genes. The HLA class 1b genes have few alleles, which makes them unlikely to be recognized as foreign by the maternal cells. The low polymorphic properties of these particular HLAs may aid trophoblasts in actively avoiding immune attacks. This review gives a complete description of the mechanisms of interaction between HLAs and maternal uNK cells in humans.
    Matched MeSH terms: Placenta*
  17. Wong YP, Tan GC, Khong TY
    Malays J Pathol, 2024 Apr;46(1):41-49.
    PMID: 38682843
    INTRODUCTION: Identification of acute funisitis, a sign of foetal inflammatory response (FIR), is crucial as their presence is associated with ominous neonatal outcomes. Recommendation on which part of umbilical cord should be sampled to facilitate optimal identification of acute funisitis is limited.

    METHODS: This is a retrospective cross-sectional study over a seven-month duration recruiting all patients with clinical suspicion of chorioamnionitis and/or maternal intrapartum pyrexia. The distribution and the degree of cord inflammation were assessed. The cases were also evaluated for maternal inflammatory response (MIR) and chorionic vasculitis (CV).

    RESULTS: Of the 191 placentas, 88 (46.1%) had some degree of cord inflammation. Forty-nine (55.7%) had a differential in cord inflammation, with distal cord section (n = 38) demonstrating significant greater inflammation than that of proximal cord section (n = 11) (p<0.001). There were 20 cases with phlebitis only and 8 cases demonstrated arteritis only in either proximal or distal cord sections. Increasing magnitude of cord inflammation was significantly associated with increasing severity of MIR and the rate of CV (p<0.001). CV was observed in 25 (24.3%) cases showing absence of cord inflammation, while 12 (13.6%) cases with cord FIR demonstrated no CV.

    DISCUSSION: Inflammatory reaction can occur variably throughout the length of the umbilical cord and chorionic plate vessels, with greater inflammation seen in the distal cord section. We affirm the current Amsterdam recommendation of submitting at least two cross sections of the cord representing proximal and distal sites and two sections from placental parenchyma to facilitate the identification of FIR.

    Matched MeSH terms: Placenta/pathology
  18. Tan KY, Deng S, Tan TK, Hari R, Sitam FT, Othman RY, et al.
    PeerJ, 2023;11:e16002.
    PMID: 37810781 DOI: 10.7717/peerj.16002
    BACKGROUND: The Malayan pangolin (Manis javanica) is a placental mammal and is listed as Critically Endangered on the IUCN Red List of Threatened Species. Most previous attempts to breed pangolins in captivity have met with little success because of dietary issues, infections, and other complications, although a previous study reported breeding pangolins in captivity to the third generation. In our previous pangolin genome sequencing data analysis, we obtained a considerable amount of bacterial DNA from a pregnant female Malayan pangolin (named "UM3"), which was likely infected by Paraburkholderia fungorum-an agent of biodegradation and bioremediation in agriculture.

    METHODOLOGY: Here, we further confirmed and characterized this bacterial species using PCR, histological staining, whole-genome sequencing, and bioinformatics approaches. PCR assays with in-house designed primer sets and 16S universal primers showed clear positive bands in the cerebrum, cerebellum, lung, and blood of UM3 suggesting that UM3 might have developed septicaemia. Histological staining showed the presence of Gram-negative rod-shaped bacteria in the pangolin brain and lungs, indicating the colonization of the bacteria in these two organs. In addition, PCR screening of UM3's fetal tissues revealed the presence of P. fungorum in the gastrocnemius muscle, but not in other tissues that we examined. We also sequenced and reconstructed the genome of pangolin P. fungorum, which has a genome size of 7.7 Mbps.

    CONCLUSION: Our study is the first to present detailed evidence of the presence of P. fungorum in a pangolin and her fetus (although preliminary results were presented in our previous article). Here, we raise the concern that P. fungorum may potentially infect humans, especially YOPI (young, old, pregnant, and immunocompromised) people. Therefore, caution should be exercised when using this bacterial species as biodegradation or bioremediation agents in agriculture.

    Matched MeSH terms: Placenta
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