Displaying publications 1 - 20 of 218 in total

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  1. Effects of cucumber mosaic virus-infected chilli plants on non-vector Bemisia tabaci (Hemiptera: Aleyrodidae)
    Saad KA, Mohamad Roff MN, Hallett RH, Abd-Ghani IB
    Insect Sci, 2019 Feb;26(1):76-85.
    PMID: 28594105 DOI: 10.1111/1744-7917.12488
    Plant virus infections are known to alter host plant attractiveness and suitability for insect herbivores. This study was conducted to determine how cucumber mosaic virus (CMV)-infected chilli plants affect the fitness and settling preferences of nonvector whitefly, Bemisia tabaci adults under dual-choice conditions with volatile organic compounds analyzed using solid phase microextraction coupled with gas chromatography-mass spectrometry (GC-MS). Results showed that the presence of CMV in chilli plants substantially affects the settling preferences of the B. tabaci, which preferred to settle on noninfected plants. Duration of the egg stage and the longevity and fecundity of adult B. tabaci on CMV-infected chilli plants were not markedly different from those on noninfected chilli plants. In contrast, the developmental time from egg to adult was significantly reduced in CMV-infected chilli plants compared to the noninfected plants. The results also showed that CMV-infected chilli plants released significantly more linalool and phenylacetaldehyde than noninfected plants. Overall, it was suggested that the behavioral response of B. tabaci might be modified by CMV-infected plants, which alter the release of specific headspace volatiles. Based on these results, the modification of plant volatile profiles may help in enhancing the effectiveness of biological control and the protection of crop plants against B. tabaci.
    Matched MeSH terms: Fertility
  2. Letter to the Editor: The Coronavirus Disease 2019 Impact on Oncofertility Services in Malaysia
    Ahmad MF, Abu MA, Abdul Karim AK
    J Adolesc Young Adult Oncol, 2020 12;9(6):693-694.
    PMID: 33090942 DOI: 10.1089/jayao.2020.0105
    Matched MeSH terms: Fertility/immunology*
  3. Fulltext Is Assisted Reproductive Technique Shari’aa-compliant? A case study at a fertility centre in Malaysia
    Ahmad Murad Z, Zailin Shah Y, Mansor S, Ahmad Irfan IH, Abdullah L
    International Medical Journal Malaysia, 2014;13(2):21-27.
    MyJurnal
    Introduction: To investigate the questions that Muslim patients, embryologists, paramedics, clinical counsellor and doctors may have pertaining to the compliance of Assisted Reproductive Technique (ART) to Shari’aa.

    Methods: As a preliminary study, an open-ended survey was administered to participants. Participants for the survey comprised of 21 patients, 2 embryologists, 2 doctors, 4 paramedics and 1 counsellor.

    Results: Data analysis showed that most of the participants posed questions that fall into six classifications which are: Munakahat (Family Law), social Hukm, Fiqh Ibadah, Fiqh Qadha (Islamic Hukm), General Fiqh and Usul Fiqh.

    Conclusion: It is clear that even though the participants were rather familiar with some of the existing Fatwas pertaining to ART and IVF in Malaysia, there are still remaining doubts which need to be clarified. This indicates that there are challenges faced in seeking and providing ART treatment to Muslim patients. This needs to be addressed perhaps in the form of Shari’aa-compliant guidelines to provide a clear explanation of each process and procedure in fertility treatment.
    Matched MeSH terms: Fertility
  4. The application of naked DNA plasmid (DrZP3) and recombinant adenovirus (Ad-rZP3) in rat animal model to determine comparative efficacy of ZP3-Immunocontraceptive vaccines
    Mohd-Lila MA, Yee LK, Cen LS, Bala JA, Balakrishnan KN, Allaudin ZN, et al.
    Microb Pathog, 2019 Sep;134:103572.
    PMID: 31163251 DOI: 10.1016/j.micpath.2019.103572
    The common physical and chemical methods for controlling rat pest are less than satisfactory and inhumane. Immunocontraception approach has been considered more humane and it can be accomplished by inducing the relevant host immune response that block further development of reproductive gametes. ZP3 proteins are known to play very important role during sperm-ovum fertilization. It is a self-antigen and only localized in female ovaries. Therefore, an immunization with ZP3 protein elsewhere will induce a generalize host immune response against ZP3 protein. This study employed rat ZP3 (rZP3) gene prepared from its cDNA of Rattus rattus diardii. It was delivered and expressed in vivo by naked plamid DNA (DrZP3) or recombinant ZP3-Adenovirus (Ad-rZP3). Expression studies in vitro with DrZP3 or Ad-ZP3 showed rZP3 proteins were successfully expressed in Vero cells. Hyperimmune serum against rZP3 that were prepared by immunizing several rats with purified rZP3-pichia yeast fusion protein showed it blocked sperms from binding DrZP3-transfected Vero cells. Female Sprague Dawley rats immunized with DrZP3 demonstrated a long-term effect for significant reduction of fertility up to 92.6%. Ovaries from rats immunized with DrZP3 were severely atrophied with disappearance of primordial follicles from ovarian cortex with an increased in the amount of oocyte-free cell clusters. Female rats immunized with Ad-rZP3 demonstrated 27% reduction of fertility. The infertility induced by Ad-rZP3 is comparatively low and ineffective. This could be due to a strong host immune response that suppresses the recombinant virus itself resulted in minimum rZP3 protein presentation to the host immune system. As a result, low antibody titers produced against rZP3 is insufficient to block oocytes from maturity and fertilization. Therefore, immunization with DrZP3 for immunocontraception is more effective than Ad-rZP3 recombinant adenovirus. It is proposed to explore further on the use of adenovirus or other alternative viruses to deliver ZP3 protein and for the development of enhanced expression of rZP3 in target host.
    Matched MeSH terms: Fertility/immunology
  5. Contraceptive method switching in Peninsular Malaysia: ethnic differences, 1940s-1970s
    Davanzo J, Starbird E, Reboussin D, Tan Boon Ann, Abdullah SH
    Malays J Reprod Health, 1988 Jun;6(1):1-21.
    PMID: 12281591
    Matched MeSH terms: Fertility
  6. Fulltext A scoping review on the use of different blood sources and components in the artificial membrane feeding system and its effects on blood-feeding and fecundity rate of Aedes aegypti
    Suresh Y, Azil AH, Abdullah SR
    PLoS One, 2024;19(1):e0295961.
    PMID: 38252615 DOI: 10.1371/journal.pone.0295961
    In some laboratories, mosquitoes' direct blood-feeding on live animals has been replaced with various membrane blood-feeding systems. The selection of blood meal sources used in membrane feeding is crucial in vector mass rearing as it influences the mosquitoes' development and reproductive fitness. Therefore, this scoping review aimed to evaluate the existing literature on the use of different blood sources and components in artificial membrane feeding systems and their effects on blood-feeding and the fecundity rate of Ae. aegypti. A literature review search was conducted by using PubMed, Scopus, and Web of Science databases according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA-ScR). The EndNote version 20 software was used to import all searched articles. Relevant information was retrieved for analysis into a Microsoft Excel Spreadsheet. A total of 104 full-text articles were assessed for eligibility criteria, whereby the articles should include the comparison between different types of blood source by using the membrane feeding systems. Only 16 articles were finally included in the analysis. Several studies had reported that human blood was superior in blood-feeding Ae. aegypti as compared to sheep blood which resulted in lower fecundity due to accumulation of free fatty acids (FFA) in the cuticles. In contrast, cattle whole blood and pig whole blood showed no significant differences in the blood-feeding and fecundity rate as compared to human blood. This review also indicated that bovine whole blood and pig whole blood enhanced Ae. aegypti's vitellogenesis and egg production as compared to plasma and blood cells. In addition, human blood of up to 10 days after the expiration date could still be used to establish Ae. aegypti colonies with good blood-feeding rates and number of eggs produced. Thus, future studies must consider the importance of selecting suitable blood sources and components for membrane blood feeding especially in mosquito colonisation and control measure studies.
    Matched MeSH terms: Fertility
  7. A seasonal analysis of Chinese births
    Abeysinghe T
    J Appl Stat, 1991;18(2):275-86.
    PMID: 12343764
    Matched MeSH terms: Fertility*
  8. Fecundity, embryonic and ovarian development of blue swimming crab, Portunus pelagicus (Linnaeus, 1758) in coastal water of Johor, Malaysia
    Ikhwanuddin M, Azra MN, Siti-Aimuni H, Abol-Munafi AB
    Pak J Biol Sci, 2012 Aug 01;15(15):720-8.
    PMID: 24171257
    Blue swimming crab, Portunus pelagicus is widely study and research throughout the Indo-West Pacific, but little is known of its reproductive biology in Malaysia. The present study describes the fecundity, embryonic development and ovarian development stages of the P. pelagicus from Johor coastal water, Malaysia. Carapace width range of berried crabs sampled was from 9.64 to 13.32 cm, while the body weight range was from 75 to 235 g. The mean number of egg produced by females in different sizes ranged from 105443.333 +/- 35448.075 per eggs batch. Mean egg size during embryonic development at stage 1 was 0.307 +/- 0.037, while 0.386 +/- 0.039 and 0.396 +/- 0.033 for stage 2 and stage 3, respectively. Study showed that there was significant (p < 0.05) relationship between the number of eggs and carapace width/body weight. Mean diameter oocyte during ovarian development at stage 1 was 97.732 +/- 12.391 while for stage 2 was 149.516 +/- 23.287. Stage 3 showed increasingly of size with mean diameter was 158.506 +/- 27.616 and 181.013 +/- 24.339 for stage 4.
    Matched MeSH terms: Fertility/physiology
  9. Determinants of birth-interval length in the Philippines, Malaysia, and Indonesia: a hazard-model analysis
    Trussell J, Martin LG, Feldman R, Palmore JA, Concepcion M, Abu Bakar D
    Demography, 1985 May;22(2):145-68.
    PMID: 3996687
    Matched MeSH terms: Fertility*
  10. Ovarian tissue cryopreservation in Malaysia: a case series
    Mat Jin N, Ahmad SM, Mohd Faizal A, Abdul Karim AKB, Abu MA
    Horm Mol Biol Clin Investig, 2022 Dec 01;43(4):469-474.
    PMID: 35545610 DOI: 10.1515/hmbci-2021-0096
    OBJECTIVES: We aim to discuss the hematological cancer cases that opted for ovarian tissue cryopreservation (OTC) as fertility preservation before the gonadotoxic chemotherapy agent.

    CASE PRESENTATION: The ovarian tissue cryopreservation (OTC) was started in August 2020 in our center. Up to now, there were four cases have been performed and included in this report. The ovarian tissue cortex was cryopreserved with cryoprotectant using Kitazato™ (Tokyo, Japan) media and fit in the closed system devices. A total of four post-OTC patients were included. The mean age was 24 years old, whereas the mean serum AMH level was 30.43 pmol/L. Most of them were diagnosed with lymphoma, except one was leukemia. All of them received additional GnRH analog following OTC as a chemoprotective agent before cancer treatment. Currently, they are recovering well and on regular follow-up with the hematological department.

    CONCLUSIONS: Although The OTC is an ultimate option for prepubertal girls, it can be proposed as a good strategy for adult cancer women who could not delay cancer therapy.

    Matched MeSH terms: Fertility Preservation*
  11. Indirect effects of cigarette butt waste on the dengue vector Aedes aegypti (Diptera: Culicidae)
    Dieng H, Rajasaygar S, Ahmad AH, Rawi CS, Ahmad H, Satho T, et al.
    Acta Trop, 2014 Feb;130:123-30.
    PMID: 24239749 DOI: 10.1016/j.actatropica.2013.11.001
    Despite major insecticide-based vector control programs, dengue continues to be a major threat to public health in urban areas. The reasons for this failure include the emergence of insecticide resistance and the narrowing of the spectrum of efficient products. Cigarette butts (CBs), the most commonly discarded piece of waste, also represent a major health hazard to human and animal life. CBs are impregnated with thousands of chemical compounds, many of which are highly toxic and none of which has history of resistance in mosquitoes. This study was performed to examine whether exposure to CB alters various biological parameters of parents and their progeny. We examined whether the mosquito changes its ovipositional behaviors, egg hatching, reproductive capacity, longevity and fecundity in response to CB exposure at three different concentrations. Females tended to prefer microcosms containing CBs for egg deposition than those with water only. There were equivalent rates of eclosion success among larvae from eggs that matured in CB and water environments. We also observed decreased life span among adults that survived CB exposure. Extracts of CB waste have detrimental effects on the fecundity and longevity of its offspring, while being attractive to its gravid females. These results altogether indicate that CB waste indirectly affect key adult life traits of Aedes aegypti and could conceivably be developed as a novel dengue vector control strategy, referring to previously documented direct toxicity on the larval stage. But this will require further research on CB waste effects on non-target organisms including humans.
    Matched MeSH terms: Fertility
  12. Fulltext Indoor-breeding of Aedes albopictus in northern peninsular Malaysia and its potential epidemiological implications
    Dieng H, Saifur RG, Hassan AA, Salmah MR, Boots M, Satho T, et al.
    PLoS One, 2010;5(7):e11790.
    PMID: 20668543 DOI: 10.1371/journal.pone.0011790
    The mosquito Ae. albopictus is usually adapted to the peri-domestic environment and typically breeds outdoors. However, we observed its larvae in most containers within homes in northern peninsular Malaysia. To anticipate the epidemiological implications of this indoor-breeding, we assessed some fitness traits affecting vectorial capacity during colonization process. Specifically, we examined whether Ae. albopictus exhibits increased survival, gonotrophic activity and fecundity due to the potential increase in blood feeding opportunities.
    Matched MeSH terms: Fertility/physiology
  13. Fulltext Life Table and Population Parameters of Nilaparvata lugens Stal. (Homoptera: Delphacidae) on Rice
    Win SS, Muhamad R, Ahmad ZA, Adam NA
    Trop Life Sci Res, 2011 May;22(1):25-35.
    PMID: 24575207 MyJurnal
    Survival and fertility characteristics of the brown planthopper (BPH), Nilaparvata lugens were assessed in the laboratory and field. Life tables and population parameters of the BPH were constructed in an environment with unlimited food supply and that was free of natural enemies. The highest mortality occurred in the immature stage, especially in the first and second instars. The life table analysis showed that the population density of BPH decreased gradually. The survival ratio of male to female was 0.512:0.488. The females lived for a maximum of 20 days. The trend of oviposition showed a peak at around the tenth day of the female life. The highest number of eggs produced per female per day was 9.63. The intrinsic rate of increase (rm) in egg production per female per day was 0.0677 and the daily finite of increase (λ) was 1.0688 females per female per day, with a mean generation time (T) of 34.05 days. The net reproductive rate (Ro) of the population was 10.02. The population doubling time (DT) was 10.42 days.
    Matched MeSH terms: Fertility
  14. Sperm DNA fragmentation test: usefulness in assessing male fertility and assisted reproductive technology outcomes
    Evgeni E, Sabbaghian M, Saleh R, Gül M, Vogiatzi P, Durairajanayagam D, et al.
    Panminerva Med, 2023 Jun;65(2):135-147.
    PMID: 37103485 DOI: 10.23736/S0031-0808.23.04836-X
    Male infertility is attributed to multiple factors including high levels of sperm DNA fragmentation (SDF). Conventional semen analysis continues to be the gold standard for diagnosis of male factor infertility around the world. However, the limitations of basic semen analysis have prompted the search for complementary assessments of sperm function and integrity. Sperm DNA fragmentation assays (direct or indirect) are emerging as important diagnostic tools in male infertility workups, and have been advocated for use in infertile couples for a variety of reasons. While a controlled degree of DNA nicking is required for appropriate DNA compaction, excessive fragmentation of sperm DNA is linked to impaired male fertility potential, decreased fertilization, poor embryo quality, recurrent pregnancy loss, and failure of assisted reproductive technology procedures. However, there is an ongoing debate regarding whether or not to employ SDF as a routine test for male infertility. This review compiles up-to-date information regarding the pathophysiology of SDF, the currently available SDF tests, and the role of SDF tests in natural and assisted conception conditions.
    Matched MeSH terms: Fertility
  15. Age at first birth and completed family size in West Malaysia
    Aghajanian A
    J Biosoc Sci, 1981 Apr;13(2):197-201.
    PMID: 7287777 DOI: 10.1017/s0021932000013365
    Matched MeSH terms: Fertility*
  16. Breast-feeding in some developing countries
    Ahmad M
    Egypt Popul Fam Plann Rev, 1979;13(1-2):168-86.
    PMID: 12312263
    PIP: Responses to questions relating to breastfeeding in the World Fertility Surveys of South Korea, Indonesia, Nepal, Sri Lanka, Malaysia, and Bangladesh are analyzed. Of these countries, the percentage of ever-married women who had breastfed in the last closed interval was between 94-99%, except for Malaysia (81%) and average number of months breastfeeding took place was from 16.5-19.2, except for Malaysia (7.3). The infant mortality rate in these countries was 33/1000 live births for South Korea, 45/1000 for Malaysia, 51/1000 for Sri Lanka, 137/1000 for Indonesia, 150/1000 for Bangladesh, and 152/1000 for Nepal. Responses, however, might vary according to different interview situations. Assuming that the reporting errors are of similar magnitude and direction, the relationship between duration of breastfeeding and the birth interval can be studied. But it is possible that breastfeeding was prolonged due to other reasons for which conception was delayed; thus the regression of breastfeeding duration on the birth interval is not as logical as the regression of the birth interval on the breastfeeding is, especially when habitual breastfeeding can be avoided. The negative relationship between breastfeeding and infant mortality does exist, assuming that a woman breastfeeds all her children for similar durations. Some breastfeeding differentials are place of residence (less for rural areas), education (reduces duration), and religion (Christians have shorter duration than Muslims, Hindus, or Buddhists). In South Korea the mean length of breastfeeding of women aged 25-34 and 35-44 are 17.5 and 20.5, and women using contraceptives are 26% for 25-34 and 20% for 35-44. South Korea also has the highest level of breastfeeding, highest incidence of ever use of contraceptives, and a very low level of fertility. Nepal and Bangladesh have a high level of breastfeeding but since their contraceptive incidence is low, their fertility level remains high. Some areas of further research include influence of breastfeeding on infant and child mortality.
    Matched MeSH terms: Fertility*
  17. Fulltext The link between climate change, food security and fertility: The case of Bangladesh
    Chen M, Atiqul Haq SM, Ahmed KJ, Hussain AHMB, Ahmed MNQ
    PLoS One, 2021;16(10):e0258196.
    PMID: 34673797 DOI: 10.1371/journal.pone.0258196
    Climate change is likely to worsen the food security situation through its impact on food production, which may indirectly affect fertility behaviour. This study examines the direct and indirect effects of climate change (e.g., temperature and precipitation) via the production of major crops, as well as their short- and long-term effects on the total fertility rate (TFR) in Bangladesh. We used structural equation modelling (SEM) to perform path analysis and distinguish the direct influence of climate change on fertility and its indirect influence on fertility through food security. We also applied the error correction model (ECM) to analyze the time-series data on temperature and precipitation, crop production and fertility rate of Bangladesh from 1966 to 2015. The results show that maximum temperature has a direct effect and indirect negative effect-via crop production-on TFR, while crop production has a direct positive effect and indirect negative effect-via infant mortality-on TFR. In the short term, TFR responds negatively to the maximum temperature but positively in the long term. The effect of rainfall on TFR is found to be direct, positive, but mainly short-term. Although indicators of economic development play an important part in the fertility decline in Bangladesh, some climate change parameters and crop production are non-negligible factors.
    Matched MeSH terms: Fertility*
  18. Fulltext Swyer syndrome in a woman with pure 46, XY gonadal dysgenesis and a hypoplastic uterus
    Azidah A, Nik Hazlina N, Aishah M
    Malays Fam Physician, 2013;8(2):58-61.
    PMID: 25606286 MyJurnal
    Swyer syndrome or pure 46, XY gonadal dysgenesis is a condition in which the individuals have female appearance. They classically present as sexually infantile phenotypic females with primary amenorrhoea. People with this disorder have female external genitalia but the uterus and fallopian tubes are underdeveloped. However, they do not have functional gonads (ovaries or testes). Instead, they have streak gonads. We are reporting a case of Swyer syndrome with partially developed breasts, hypoplastic uterus, and absent streak gonads. The patient was treated with hormonal therapy and few years after her presentation, breast and uterine development were noted. In view that the patient is already married, the option of fertility was discussed with her. This case illustrates a rare case of gonadal dysgenesis and demonstrates the importance of counseling on the options of treatment, especially regarding fertility.
    Matched MeSH terms: Fertility
  19. Fecundity, fertility and survival of red palm weevil (Rhynchophorus ferrugineus) larvae reared on sago palm
    Wahizatul Afzan Azmi, Yong Kah Wai, Aisyah Abu Bakar
    Sains Malaysiana, 2015;44:1371-1375.
    AISYAH ABU BAKARRed palm weevil (RPW), Rhynchophorus ferrugineus has been reported as a serious pest of coconut, sago palm and date palm in many parts of the world. In Malaysia, RPW is a lethal pest of coconut in Terengganu and sago palm in Sarawak. However, very limited information about the reproductive performance of RPW is available, specifically in Malaysia. In the present study, the reproductive performance of RPW reared on sago palm (Metroxylon sagu) were studied using nine pairs of virgin RPW under laboratory conditions. The number of eggs laid and eggs viability were recorded daily until females could not produce eggs. The total number of eggs laid were 3081 and the average number of eggs deposited by a female was 342.3+0.97 eggs (ranged from 270 to 396). The percentage of hatchability was 52.4% and out of the total 1614 hatched eggs, only 118 individuals (7.3%) were survived until late instar. However, no significant differences in fecundity, hatchability and total survived larvae in different RPW pairs were observed. Females longevity was found to be strongly influenced by the number of eggs laid; the higher number of eggs laid, the shorter is the life span of the female. This study is important to understand the biological aspects of RPW, as a first step to develop effective control strategy of the pest.
    Matched MeSH terms: Fertility
  20. The Impact of Plant Bioactive Compounds on Aging and Fertility of Diverse Organisms: A Review
    Noordin MAM, Noor MM, Aizat WM
    Mini Rev Med Chem, 2020;20(13):1287-1299.
    PMID: 32348218 DOI: 10.2174/1389557520666200429101942
    It is expected that in 2050, there will be more than 20% of senior citizens aged over 60 years worldwide. Such alarming statistics require immediate attention to improve the health of the aging population. Since aging is closely related to the loss of antioxidant defense mechanisms, this situation eventually leads to numerous health problems, including fertility reduction. Furthermore, plant extracts have been used in traditional medicine as potent antioxidant sources. Although many experiments had reported the impact of various bioactive compounds on aging or fertility, there is a lack of review papers that combine both subjects. In this review, we have collected and discussed various bioactive compounds from 26 different plant species known to affect both longevity and fertility. These compounds, including phenolics and terpenes, are mostly involved in the antioxidant defense mechanisms of diverse organisms such as rats, mites, fruit flies, roundworms, and even roosters. A human clinical trial should be considered in the future to measure the effects of these bioactive compounds on human health and longevity. Ultimately, these plant-derived compounds could be developed into health supplements or potential medical drugs to ensure a healthy aging population.
    Matched MeSH terms: Fertility
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