Displaying publications 81 - 100 of 115 in total

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  1. Woon YH, Suhaini SA
    Data Brief, 2021 Apr;35:106501.
    PMID: 33997187 DOI: 10.1016/j.dib.2020.106501
    A caesarean section (CS) is a common birth delivery mode, which involves delivery of the baby through a surgical incision on the mother's abdomen and uterus. This article presents a survey dataset on the perception and response of women about the CS. This survey employed a quantitative research design. The data were collected by means of a face to face questionnaire. Majority of the respondents are in the age range of 31 - 40 years old. The findings indicate that the respondents mainly refer to the internet to obtain information about the birth delivery mode that helped the respondents to decide on their mode of preference. This is followed by obstetrician/midwife and friends. Various statements were used to determine the perception of respondents towards CS.
    Matched MeSH terms: Uterus
  2. Shahzad H, Giribabu N, Muniandy S, Salleh N
    Int J Clin Exp Pathol, 2014;7(9):5484-94.
    PMID: 25337190
    This study investigated the effect of 10 or 100 mg/kg/day quercetin on the uterus of ovariectomized adult female rats receiving sex-steroid replacement regime mimicking changes in hormonal profiles during the reproductive cycle. Following seven days of treatment with estrogen and progesterone with or without quercetin, uteri were harvested for histological and proliferative cell nuclear antigen (PCNA) protein and mRNA expression and PCNA protein distribution analyses. Our findings indicated that co-administration of 10 mg/kg/day quercetin with estrogen and progesterone caused a significant decrease in the size of uterine lumen and epithelial heights with lower PCNA protein and mRNA expression as compared to estrogen plus progesterone-only treatment (P < 0.05). Concomitant treatment with estrogen and progesterone with 100 mg/kg/day quercetin resulted in a marked increase in the number of glands with increased PCNA protein and mRNA expression. Significantly higher PCNA distribution was observed in the stroma and glands as compared to estrogen plus progesterone-only treatment (P < 0.05). In conclusion, at 10 mg/kg/day, quercetin affects uterine morphology but not proliferation, however at 100 mg/kg/day, quercetin induced significant stromal and glandular proliferation which could predispose the uterus towards neoplastic development.
    Matched MeSH terms: Uterus/drug effects*; Uterus/metabolism; Uterus/pathology
  3. Chinigarzadeh A, Muniandy S, Salleh N
    Theriogenology, 2015 Oct 1;84(6):911-26.
    PMID: 26154487 DOI: 10.1016/j.theriogenology.2015.05.029
    Estrogen, progesterone, and genistein could induce changes in uterine fluid volume and Na(+) concentration. Progesterone upregulates expression of epithelial sodium channel (ENaC) and Na(+)/K(+)-ATPase which contributed toward these changes. However, effects of estrogen and genistein were unknown. This study therefore investigated changes in expression of these proteins in the uterus under estrogen, progesterone, and genistein influences to further understand mechanisms underlying sex steroids and phytoestrogen effects on uterine fluid Na(+) regulation. In this study, uteri of ovariectomized female rats receiving 7-day treatment with genistein (25, 50, and 100 mg/kg/day), estrogen (0.8 × 10(-4) mg/kg/day), or progesterone (4 mg/kg/day) were harvested, and expression levels of α-, β-, and γ-ENaC proteins and messenger RNAs (mRNAs) and α-Na(+)/K(+)-ATPase protein were determined by Western blotting (proteins) and real-time polymerase chain reaction (mRNA). Meanwhile, distribution of α-, β-, and γ-ENaC and α-Na(+)/K(+)-ATPase proteins in the uterus was identified by immunohistochemistry. Our findings indicated that expression of α-, β-, and γ-ENaC proteins and mRNAs and α-Na(+)/K(+)-ATPase protein were enhanced under progesterone influence. Lower expressions were noted under estrogen and genistein influences compared to progesterone. Under estrogen, progesterone, and genistein influences, α- and β-ENaC were distributed at apical membrane and γ-ENaC was distributed at apical and basolateral membranes of uterine luminal epithelia. Under progesterone influence, α-Na(+)/K(+)-ATPase was highly expressed at basolateral membrane. In conclusion, high expression of α-, β-, and γ-ENaC and α-Na(+)/K(+)-ATPase under progesterone influence would contribute toward increased uterine fluid Na(+) reabsorption, whereas lesser expression of these proteins under estrogen and genistein influences would contribute toward lower reabsorption of uterine fluid Na(+).
    Matched MeSH terms: Uterus
  4. Mohamad Zaid SS, Kassim NM, Othman S
    PMID: 26788107 DOI: 10.1155/2015/202874
    Bisphenol A (BPA) is an endocrine disrupting chemical (EDC) that can disrupt the normal functions of the reproductive system. The objective of the study is to investigate the potential protective effects of Tualang honey against BPA-induced uterine toxicity in pubertal rats. The rats were administered with BPA by oral gavage over a period of six weeks. Uterine toxicity in BPA-exposed rats was determined by the degree of the morphological abnormalities, increased lipid peroxidation, and dysregulated expression and distribution of ERα, ERβ, and C3 as compared to the control rats. Concurrent treatment of rats with BPA and Tualang honey significantly improved the uterine morphological abnormalities, reduced lipid peroxidation, and normalized ERα, ERβ, and C3 expressions and distribution. There were no abnormal changes observed in rats treated with Tualang honey alone, comparable with the control rats. In conclusion, Tualang honey has potential roles in protecting the uterus from BPA-induced toxicity, possibly accounted for by its phytochemical properties.
    Matched MeSH terms: Uterus
  5. Loh HS, Mohd-Azmi ML, Lai KY, Sheikh-Omar AR, Zamri-Saad M
    Arch Virol, 2003 Dec;148(12):2353-67.
    PMID: 14648291
    A new rat cytomegalovirus (RCMV) isolated from the placenta/uterus of a house rat (Rattus rattus diardii) was found to productively infect rat embryo fibroblast (REF) cells. The virus produced typical herpesvirus-like cytopathic effects characterized by a lytic infection. The well-known herpesvirus morphology was confirmed by electron microscopy. Its slow growth in cell culture indicated that the virus is belonging to subfamily Betaherpesvirinae. Electron microscopy techniques and immunohistochemistry confirmed the presence of herpesviral inclusion bodies and virus related particles in the cytoplasm and nucleus of infected cells. Hyperimmune serum against the Maastricht strain of RCMV revealed the virus identity in neutralization test, immunoperoxidase and immunofluorescence techniques. Despite typical characteristics of CMV, the viral genome is significantly different from that of Maastricht, English, UPM/Sg and UPM/Kn strains. The dissimilarities, which have not been reported before, had been confirmed by mean of restriction endonuclease analysis. The new RCMV strain, a virus that infects placenta and uterus of rats, has been named as ALL-03.
    Matched MeSH terms: Uterus/virology*
  6. Farida Jamal, Mohd Salleh Mohd Yasin, Zooraidah Zainal, Hamid Arshat
    Malays J Reprod Health, 1983 Jan;1(1):55-9.
    PMID: 12279890
    Matched MeSH terms: Uterus*
  7. Lutterodt GD
    Pharmacol Res, 1995 Jul-Aug;32(1-2):89-94.
    PMID: 8668653 DOI: 10.1016/S1043-6618(95)80014-X
    Sidaverin, a crystalline compound extracted from a polar fraction of Sida veronicaefolia (Lam), elicited oxytocin-like contractions in the non-gravid rat isolated uterus preparation with a concentration-response relationship. Equipotent concentrations of oxytocin and sidaverin, using matched responses, were approximately 0.16 U and 0.4 micrograms ml-1, respectively. Sidaverin-induced contractile response was atropine reversible. The concentration-response curves for sidaverin and oxytocin were parallel, and both responses were inhibited by the specific oxytocin antagonist, Atosiban, indicating possible involvement of oxytocin receptors in the action of sidaverin. There were potentiation of action of one drug to that of the other, irrespective of the order of administration and even after washing off the first before introducing the second drug. In the gravid uterus, sidaverin produced contractions in preparations from day 1 to day 6 or 7, caused relaxation in days 7-11, and elicited contractions in day 11 through term, the sensitivity of the preparations increasing exponentially toward term with strong sustained contractions. With the exception of days 7-11, when sidaverin antagonized oxytocin action, it potentiated action of oxytocin on the gravid uterus.
    Matched MeSH terms: Uterus/drug effects*
  8. Lee CS, Lie AT
    Reprod Biomed Online, 2012 May;24(5):547-9.
    PMID: 22410277 DOI: 10.1016/j.rbmo.2012.01.021
    A 29-year-old lady with Müllerian dysgenesis was keen to have a baby. Clinically, she was medium built with well-developed secondary female sexual characteristics. There was a short and blind vagina. She had undergone surgery for an imperforated hymen. Her FSH and LH concentrations were normal. Laparoscopy revealed a patent right Fallopian tube, a rudimentary right uterus and extensive pelvic endometriosis. She subsequently underwent gamete intra-Fallopian transfer (GIFT). Oocyte retrieval was carried out laparoscopically and a total of nine oocytes were retrieved. Four of the oocytes were transferred together with motile spermatozoa into the right Fallopian tube and the remaining five oocytes were inseminated with spermatozoa for IVF. Three embryos resulted and were frozen. She subsequently developed moderate ovarian hyperstimulation syndrome. Serum β-human chorionic gonadotrophin concentration 14 days after GIFT was 1612 IU/l. Her antenatal care was relatively uneventful until 31 weeks of gestation when she was diagnosed to have intrauterine growth retardation and oligohydramnios. She then underwent an emergency Caesarean section at 32 weeks of pregnancy delivering a normal baby. This case study describes a successful pregnancy outcome following gamete intra-Fallopian transfer (GIFT) in a woman with malformation of the vagina (Müllerian dysgenesis). A 29-year-old lady with Müllerian dysgenesis diagnosed at 16 years of age was keen to become pregnant. Upon examination, a decision was made for a William's vulvovaginoplasty but as the patient was indecisive the surgery was deferred. Clinically, she is a medium-built lady with well-developed secondary female sexual characteristics. There was a short and blind vagina. Her serum FSH and LH concentrations were normal. Laparoscopy revealed a patent right Fallopian tube, a rudimentary right uterus and extensive pelvic endometriosis. She subsequently underwent GIFT. Nine oocytes were retrieved through laparoscopy. Four of the oocytes were transferred together with motile sperm into the right Fallopian tube and the remaining five oocytes were inseminated with sperm for IVF. Three embryos resulted and were frozen. Serum β human chorionic gonadotrophin concentration measured 14 days after GIFT was 1612 IU/l. An abdominal ultrasonography performed at 5 weeks showed one intrauterine gestational sac. Her antenatal care was uneventful until 31 weeks of gestation when she developed a deficiency of amniotic fluid in the amniotic sac. She then underwent an emergency Caesarean section at 32 weeks of pregnancy. She delivered a healthy, normal 1.24 kg baby boy. Her post-natal care was uneventful.
    Matched MeSH terms: Uterus/abnormalities
  9. Mosavat M, Ooi FK, Mohamed M
    Biomed Res Int, 2014;2014:123640.
    PMID: 24672778 DOI: 10.1155/2014/123640
    This study was performed to determine the effects of 8-week honey supplementation combined with different jumping exercise intensities on serum cortisol, progesterone, estradiol, and reproductive organs. Eighty-four 9-week-old female rats were divided into 7 groups: baseline controls (C0), sedentary group (C), 20 and 80 jumps per day (Ex(20J), Ex(80J)), honey (H), and combined honey with 20 and 80 jumps per day (HEx(20J), HEx(80J)) groups. Jumping exercise was performed at 5 days/week and honey was given at a dosage of 1 g/kg body weight/day for 7 days/week. The level of serum cortisol was higher in Ex(20J) and Ex(80J) compared to C. There was significantly lower value of serum cortisol in HEx(20J) compared to Ex(80J). Serum progesterone levels were significantly lower in Ex(20J) and Ex(80J) compared to C. However, serum progesterone levels were significantly higher in HEx(20J) and HEx(80J) compared to Ex(20J) and Ex(80J). Relative uterine weights were significantly greater in HEx(20J) compared to C and HEx(80J), respectively. There was no significant difference in estradiol level and relative ovarian weights among all the groups. Therefore, honey elicited beneficial effects in reducing the increase of cortisol and in increasing the reduce of progesterone levels induced by different intensities jumping exercise in female rats.
    Matched MeSH terms: Uterus/anatomy & histology
  10. Bamaiyi PH, Hassan L, Khairani-Bejo S, Zainal Abidin M, Ramlan M, Krishnan N, et al.
    Trop Biomed, 2012 Dec;29(4):513-8.
    PMID: 23202595
    A study was carried out to isolate Brucella melitensis using established bacteriological and PCR techniques in Brucella seropositive goats in farms in Selangor, Negeri Sembilan, Melaka and Pulau Pinang. Brucella melitensis was isolated from 7 of 134 reactors with the highest isolation from the vaginal swabs (57.14%) followed by the spleen (28.57%), uterine fluid (14.29%). No Brucella was isolated from the lymph nodes. PCR confirmed all the seven isolates as B. melitensis and isolates were phylogenetically related to other isolates from India, Iran, and Israel but most closely related to isolates from Singapore.
    Matched MeSH terms: Uterus/microbiology
  11. Zin SR, Omar SZ, Khan NL, Musameh NI, Das S, Kassim NM
    Clinics (Sao Paulo), 2013;68(2):253-62.
    PMID: 23525324
    OBJECTIVES: Genistein is known to influence reproductive system development through its binding affinity for estrogen receptors. The present study aimed to further explore the effect of Genistein on the development of the reproductive system of experimental rats.

    METHODS: Eighteen post-weaning female Sprague Dawley rats were divided into the following groups: (i) a control group that received vehicle (distilled water and Tween 80); (ii) a group treated with 10 mg/kg body weight (BW) of Genistein (Gen 10); and (iii) a group treated with a higher dose of Genistein (Gen 100). The rats were treated daily for three weeks from postnatal day 22 (P22) to P42. After the animals were sacrificed, blood samples were collected, and the uteri and ovaries were harvested and subjected to light microscopy and immunohistochemical study.

    RESULTS: A reduction of the mean weekly BW gain and organ weights (uteri and ovaries) were observed in the Gen 10 group compared to the control group; these findings were reversed in the Gen 100 group. Follicle stimulating hormone and estrogen levels were increased in the Gen 10 group and reduced in the Gen 100 group. Luteinizing hormone was reduced in both groups of Genistein-treated animals, and there was a significant difference between the Gen 10 and control groups (p<0.05). These findings were consistent with increased atretic follicular count, a decreased number of corpus luteum and down-regulation of estrogen receptors-a in the uterine tissues of the Genistein-treated animals compared to the control animals.

    CONCLUSION: Post-weaning exposure to Genistein could affect the development of the reproductive system of ovarian-intact experimental rats because of its action on the hypothalamic-pituitary-gonadal axis by regulating hormones and estrogen receptors.

    Matched MeSH terms: Uterus/drug effects*
  12. Thilagar S, Yew YC, Dhaliwal GK, Toh I, Tong LL
    Vet Rec, 2005 Oct 29;157(18):558-60.
    PMID: 16258139
    Matched MeSH terms: Uterus/pathology
  13. Chinigarzadeh A, Kasim NF, Muniandy S, Kassim NM, Salleh N
    Int J Mol Sci, 2014;15(1):958-76.
    PMID: 24434640 DOI: 10.3390/ijms15010958
    Genistein has been reported to stimulate luminal HCO3(-) secretion. We hypothesized that genistein mediates this effect via SLC26A6 and SLC4A4 (NBCe1) transporters. Our study aimed to: investigate changes in uterine fluid pH, Na+ and HCO3(-) concentration and expression of uterine SLC26A6 and NBCe1 under genistein effect. Ovariectomized adult female rats received 25, 50 and 100 mg/kg/day genistein for a week with and without ICI 182780. A day after the last injection, in vivo uterine perfusion was performed to collect uterine fluid for Na+, HCO3(-) and pH determination. The animals were then sacrificed and uteri were removed for mRNA and protein expression analyses. SLC26A6 and NBCe1-A and NBCe1-B distribution were visualized by immunohistochemistry (IHC). Genistein at 50 and 100 mg/kg/day stimulates uterine fluid pH, Na+ and HCO3(-) concentration increase. Genistein at 100 mg/kg/day up-regulates the expression of SLC26A6 and SLC4A4 mRNA, which were reduced following concomitant ICI 182780 administration. In parallel, SLC26A6 and NBCe1-B protein expression were also increased following high dose genistein treatment and were localized mainly at the apical membrane of the luminal epithelia. SLC26A6 and NBCe1-B up-regulation by genistein could be responsible for the observed increase in the uterine fluid pH, Na+ and HCO3(-) concentration under this condition.
    Matched MeSH terms: Uterus/metabolism*
  14. Sayem ASM, Giribabu N, Muniandy S, Salleh N
    Biomed Pharmacother, 2017 Dec;96:1016-1021.
    PMID: 29221723 DOI: 10.1016/j.biopha.2017.11.128
    INTRODUCTION: Thyroid hormone is known to play important role during embryo implantation, however mechanisms underlying its actions in uterus during peri-implantation period has not been fully identified. In this study, we hypothesized that thyroid hormone could affect expression of proteins related to its function, where these could explain mechanisms for its action in uterus during this period.

    METHODS: Female rats, once rendered hypothyroid via oral administration of methimazole (0.03% in drinking water) for twenty-one days were mated with fertile euthyroid male rats at 1:1 ratio. Pregnancy was confirmed by the presence of vaginal plug and this was designated as day-1. Thyroxine (20, 40 and 80 μg/kg/day) was then subcutaneously administered to pregnant, hypothyroid female rats for three days. A day after last injection (day four pregnancy), female rats were sacrificed and expression of thyroid hormone receptors (TR-α and β), retinoid X receptor (RXR) and extracellular signal-regulated kinase (ERK1/2) in uterus were quantified by Western blotting while their distribution in endometrium was visualized by immunofluorescence.

    RESULTS: Expression of TRα-1, TRβ-1 and ERK1/2 proteins in uterus increased with increasing doses of thyroxine however no changes in RXR expression was observed. These proteins were found in the stroma with their distribution levels were relatively higher following thyroxine treatment.

    CONCLUSIONS: Increased expression of TRα-1, TRβ-1 and ERK1/2 at day 4 pregnancy in thyroxine-treated hypothyroid pregnant rats indicate the importance of thyroxine in up-regulating expression of these proteins that could help mediate the uterine changes prior to embryo implantation.

    Matched MeSH terms: Uterus/drug effects; Uterus/metabolism*
  15. Salleh N, Sayem ASM, Giribabu N, Khaing SL
    Cell Biol Int, 2019 May;43(5):486-494.
    PMID: 30761678 DOI: 10.1002/cbin.11114
    Hypothyroidism has been linked to infertility, but the mechanisms underlying infertility-related hypothyroidism have yet to be fully elucidated. Therefore, in this study, effects of hypothyroidism on expression of the proteins related to thyroid hormone function in the uterus, which were thought to play a role implantation, including thyroid hormone receptor (TR), thyroid stimulating hormone receptor (TSHR), retinoic acid receptor (RAR) and extracellular kinase (ERK) were identified. Pregnant female rats were rendered hypothyroid by giving methimazole (MMI), orally. Following hypothyroid induction, rats were grouped into control (non-treated) and received subcutaneous thyroxine at 20, 40, and 80 μg/kg/day for five consecutive days. At Day 6, which is the day of implantation (GD 6), rats were sacrificed and the number of embryo implantation site in the uterus was calculated. Then, uterine horns were harvested and expression of the above proteins and their mRNAs were identified by Western blotting and real-time PCR, respectively. In non-treated hypothyroid pregnant rats, the number of embryo implantation sites decreased as compared to euthyroid and hypothyroid rats receiving thyroxine treatment. Similarly, expression of TRα-1, TRβ-1, TSHR, ERK1/2 and RAR proteins and mRNA in the uterus of non-treated hypothyroid rats also decreased (P 
    Matched MeSH terms: Uterus/metabolism; Uterus/physiology
  16. Zakaria R, Rajikin MH, Yaacob NS, Nor NM
    Acta Histochem, 2009;111(1):52-60.
    PMID: 18676006 DOI: 10.1016/j.acthis.2008.04.002
    The aim of the present study was to analyze the immunolocalization of insulin-like growth factor (IGF)-1 and IGF-2 and their receptors in the oviduct and uterus of control and diabetic mice. Sexually mature female ICR mice aged 6-8 weeks were rendered diabetic by streptozotocin (200 mg/kg, administered intraperitoneally). Oviductal and uterine tissues were obtained from the superovulated control and diabetic mice at 48, 72 and 96 h post-human chorionic gonadotropin (hCG) treatment. Localization of IGF-1, IGF-2, IGF-1R and IGF-2R was determined by immunohistochemistry and a semi-quantitative scoring of immunolabelling was performed using a standardized 5-point system. The immunohistochemical scorings for both IGF-1 and IGF-1R were significantly decreased in the oviducts of diabetic mice at 96 h post-hCG treatment. The scores for IGF-2 were significantly increased in the oviducts of diabetic mice at 48 and 72 h post-hCG treatment, and for IGF-2R at 72 h post-hCG treatment. However, there was no significant difference in the scores of IGFs and their receptors in the uterus of control and diabetic mice. In conclusion, the oviductal immunolabelling for IGFs and their receptors was significantly altered by maternal diabetes, which may be of importance in the pathogenesis of preimplantation diabetic embryopathy.
    Matched MeSH terms: Uterus/metabolism*; Uterus/pathology
  17. Jesse FFA, Odhah MN, Abba Y, Garba B, Mahmood Z, Hambali IU, et al.
    Microb Pathog, 2020 Feb;139:103852.
    PMID: 31730998 DOI: 10.1016/j.micpath.2019.103852
    BACKGROUND: Corynebacterium pseudotuberculosis biotype ovis is a bacterium that causes caseous lymphadenitis (CLA), a chronic disease of sheep and goats characterized by the formation of suppurative abscesses in superficial and visceral lymph nodes and internal organs of small ruminants. This study was designed to evaluate the reproductive hormonal changes (estrogen and progesterone) and histopathology in the reproductive organs and associated lymph nodes of does challenged with C. pseudotuberculosis biotype ovis and its immunogen; corynomycolic acid. A total of 12 healthy non-pregnant female goats were grouped into three: A, B and C consisting of four does each. Group A was intradermally inoculated with 2 mL of sterile phosphate buffered saline (PBS) pH 7 (negative control group); group B was intradermally inoculated with 2 mL of corynomycolic acid extract (CMAs), while group C was intradermally inoculated with 2 mL of 10⁹ colony-forming unit (cfu) of live C. pseudotuberculosis. Blood samples were also collected at predetermined intervals for estrogen and progesterone hormonal assays. The does were euthanized 90 days post challenge and tissue samples of the uterus, ovaries, fallopian tubes, cervix and associated lymph nodes were collected and fixed in 10% neutral buffered formalin for histopathological processing. The result showed various degrees of histopathological changes (hemorrhage, congestion, degeneration, necrosis, edema, leucocytic infiltrations) in the reproductive organs and associated lymph nodes of both inoculation groups. Increases in estrogen hormone concentration were observed in both inoculation groups in comparison to the control group. However, progesterone concentration was only increased in group C. This study highlighted that corynomycolic acid extract from C. pseudotuberculosis biotype ovis resulted in significant histopathology in the reproductive organs and associated lymph nodes of does and increase estrogen concentration.
    Matched MeSH terms: Uterus/pathology
  18. Rasdi Z, Kamaludin R, Ab Rahim S, Syed Ahmad Fuad SB, Othman MHD, Siran R, et al.
    Sci Rep, 2020 Apr 03;10(1):5882.
    PMID: 32246001 DOI: 10.1038/s41598-020-62420-1
    This study aimed to examine the impact of BPA exposure on pregnancy and foetuses on cardiac tissues and the expression of cardiac microRNAs (miRNAs) related to heart development and diseases. Pregnancy is known to be the "critical windows" in determining the offspring physical and cells development in their life after birth. The increment of the risk of cardiovascular disease (CVD) in a later stage of life has been reported by few studies demonstrated from prenatal exposure of BPA. BPA has been shown to alter miRNAs expression profiles for organ development, regeneration and metabolic functions. These alterations have been associated with the risk of CVDs. However, the associations between pregnancy outcomes and miRNAs expression in cardiac of mother- and foetuses-exposed to BPA are still not entirely explored. In BPA-exposed pregnant rat groups, a significant weight gained was observed in comparison to control (p 
    Matched MeSH terms: Uterus/drug effects*
  19. Nesaretnam K, Dorasamy S, Darbre PD
    Int J Food Sci Nutr, 2000;51 Suppl:S95-103.
    PMID: 11271861
    The vitamin E component of palm oil provides a rich source of tocotrienols which have been shown previously to be growth inhibitory to two human breast cancer cell lines: responsive MCF7 cells and unresponsive MDA-MB-231 cells. Data presented here shows that the tocotrienol-rich fraction (TRF) of palm oil and individual fractions (alpha, gamma and delta) can also inhibit the growth of another responsive human breast cancer cell line, ZR-75-1. At low concentrations in the absence of oestrogen tocotrienols stimulated growth of the ZR-75-1 cells, but at higher concentrations in the presence as well as in the absence of oestradiol, tocotrienols inhibited cell growth strongly. As for MCF7 cells, alpha-tocopherol had no effect on growth of the ZR-75-1 cells in either the absence or presence of oestradiol. In studying the effects of tocotrienols in combination with antioestrogens, it was found that TRF could further inhibit growth of ZR-75-1 cells in the presence of tamoxifen (10(-7) M and 10(-8) M). Individual tocotrienol fractions (alpha, gamma, delta) could inhibit growth of ZR-75-1 cells in the presence of 10(-8) M oestradiol and 10(-8) M pure antioestrogen ICI 164,384. The immature mouse uterine weight bioassay confirmed that TRF could not exert oestrogen antagonist action in vivo. These results provide evidence of wider growth-inhibitory effects of tocotrienols beyond MCF7 and MDA-MB-231 cells, and with an oestrogen-independent mechanism of action, suggest a possible clinical advantage in combining administration of tocotrienols with antioestrogen therapy.
    Matched MeSH terms: Uterus/drug effects
  20. Arumugam K, Ng KB
    Malays J Reprod Health, 1987 Dec;5(2):85-8.
    PMID: 12315186
    Matched MeSH terms: Uterus*
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