Bella Amanda

Bella Amanda

*This is an algorithmically generated author record based on publicly available information.

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Bella Amanda has a total of 34 co-authors. Here are the top co-authors by number of shared publications:


Latest Publications

  • Open Access

    Identification of Sexual Behaviour of Feminist Men Who Have Sex with Woman in Indonesia

    by Cennikon Pakpahan, Christian Melka Parmanto, Bella Amanda, An Nguyen, Andri Rezano

    As a patriarchal country with dominant religious and cultural values, it is not easy to accept feminism in Indonesia. However, the idea has been growing and gaining acceptance in Indonesia for the past couple of years, influenced by media and technology. Feminism is not only embraced by women but also by men, which may affect men’s sexual behaviour with their partners. Therefore, we conducted a cross-sectional study with an online data survey by distributing questionnaires involving 335 participants. Our pilot study reported the sexual behaviours of (heterosexual feminist) in Indonesia compared to (non-feminist) men. Despite some indifferent behaviour, feminist men tend to ensure the satisfaction of their female partners as a form of respect for their partners. Some sexual behaviours that were significantly different between heterosexual feminist and non-feminist men always began with foreplay duration of foreplay (average) asking for the position (p = 0.001), and asking if the partner was satisfied or not. This study implies that heterosexual feminist men exhibit tremendous respect toward women and can contribute to more equitable and fulfilling relationships, fostering mutual respect and more profound emotional connection.


  • Open Access

    The role of vitamin d receptor gene polymorphisms in obesity: a systematic review and meta-analysis

    by Tri Hartini Yuliawati, Dewi Ratna Sari, Citrawati Dyah Kencono Wungu, Zakiyatul Faizah, Berliana Hamidah, Bella Amanda, Lucky Prasetiowati, Rimbun Rimbun, Kusuma Eko Purwantari, Ninik Darsini, et al.

    Introduction: Obesity has become a major global issue since it can increase the risk of fatal disease. Genetic variation in the vitamin D receptor (VDR) gene is a potential candidate for obesity, though findings are inconclusive. Objectives: This meta-analysis aims to determine the association between VDR polymorphisms and obesity risk.Methods: All relevant studies from 1990 to January 2024 were screened using PubMed, Web of Science, Science Direct, and Scopus. This meta-analysis included studies meeting PROSPERO-registered eligibility criteria. Pooled odds ratios (OR) with 95% confidence intervals (CI) for six VDR gene polymorphisms (BsmI, FokI, TaqI, ApaI, and Cdx2) were generated using RevMan 5.4.Results: This meta-analysis included 23 studies with 5715 obese/overweight and 4887 non-obese individuals from China, Malaysia, Egypt, Turkey, India, Iran, UAE, Saudi Arabia, Czech Republic, Greece, USA, Denmark, Hungary, and Belgium. The findings show an association between VDR ApaI polymorphism and reduced obesity risk in homozygous models [aa vs. AA: OR=0.76, CI=0.60-0.97; P=0.03]. The TaqI variant is linked to increased obesity risk in Europeans under allelic [t vs. T: OR=1.33, CI=1.11-1.60; P=0.002], homozygous [tt vs. TT: OR=1.68, CI=1.13-2.50; P=0.010], dominant [tt vs. TT+Tt: OR=1.47, CI=1.07-2.03; P=0.02], and recessive [Tt+tt vs. TT: OR=1.43, CI=1.08-1.89; P=0.01] models.Conclusions: This meta-analysis suggests the aa genotype of VDR ApaI polymorphism may protect against obesity across populations. In Europeans, the t allele of VDR TaqI polymorphism is identified as an obesity risk factor


  • Open Access

    The Hippo Signaling Pathway, Reactive Oxygen Species Production, and Oxidative Stress: A Two-Way Traffic Regulation

    by Bella Amanda, Rangga Pragasta, Haris Cakrasana, Arifa Mustika, Zakiyatul Faizah, Delvac Oceandy

    The Hippo signaling pathway is recognized for its significant role in cell differentiation, proliferation, survival, and tissue regeneration. Recently, the Hippo signaling pathway was also found to be associated with oxidative stress and reactive oxygen species (ROS) regulation, which are important in the regulation of cell survival. Studies indicate a correlation between components of the Hippo signaling pathway, including MST1, YAP, and TAZ, and the generation of ROS. On the other hand, ROS and oxidative stress can activate key components of the Hippo signaling pathway. For example, ROS production activates MST1, which subsequently phosphorylates FOXO3, leading to apoptotic cell death. ROS was also found to regulate YAP, in addition to MST1/2. Oxidative stress and ROS formation can impair lipids, proteins, and DNA, leading to many disorders, including aging, neurodegeneration, atherosclerosis, and diabetes. Consequently, understanding the interplay between the Hippo signaling pathway, ROS, and oxidative stress is crucial for developing future disease management strategies. This paper aimed to review the association between the Hippo signaling pathway, regulation of ROS production, and oxidative stress to provide beneficial information in understanding cell function and pathological processes.


  • Open Access

    Mammalian Ste-20-like Kinase 1/2 (MST1/2) Inhibitor XMU-MP-1: A Potential Compound to Improve Spermatogenesis in Mouse Model of Diabetes Mellitus

    by Bella Amanda, Zakiyatul Faizah, Cennikon Pakpahan, M. Aminudin Aziz, Berliana Hamidah, Faisal Yusuf Ashari, Delvac Oceandy

    Background/Objectives: Spermatogenesis is a key process in male reproduction that, if it does not happen correctly, can lead to infertility, with diabetes being one of the most prevalent causes of spermatogenesis disruption. Currently, there is a lack of research examining the potential benefits of targeting cell proliferation to enhance spermatogenesis in this condition. XMU-MP1 has been identified as an inhibitor of MST1, a core component of the Hippo pathway, which is anticipated to promote proliferation and regeneration. This study aims to evaluate the effects of XMU-MP1 treatment on sperm and testicular characteristics in mice. Methods: We used the STZ-induced diabetic mouse model to investigate the impact of administering XMU-MP1 on testicular tissue and sperm parameters. This study compared the seminiferous tubules, specifically focusing on the diameter of the seminiferous tubule, the thickness of the seminiferous tubule epithelium, the ratio of the thickness of the seminiferous tubule epithelium to the diameter of the seminiferous tubules, and the lumen diameter of the seminiferous tubules. We also conducted a comparison of sperm parameters, including sperm concentration, progressive motility, total motility, total motility, and morphology. Results: XMU-MP1-treated mice had a larger spermatogenesis area and better sperm motility than control mice. Diabetic mice treated with XMU-MP1 also showed a trend toward improvements in the spermatogenesis area, sperm concentration, sperm motility, and sperm morphology, although these improvements were not statistically significant. Conclusions: XMU-MP1 serves as a potential compound to improve spermatogenesis in mice.


  • Open Access

    Understanding Islamic Junior High School Students' Attitudes and Thoughts Toward Puberty: A Qualitative Study

    by Reny Sumino, Cennikon Pakpahan, Bella Amanda

    Puberty is a transitional period experienced by humans. This period is closely associated with physical, psychological, and emotional changes. Adolescents' responses to puberty can vary. We conducted a qualitative study to determine the definition of puberty and opinions and feelings about facing or experiencing puberty. Our research was conducted in one junior high school by conducting interviews in two focus group discussions. We found two major themes in this study: first is the definition of puberty, and second is the feeling about puberty. Both themes consisted of several sub-themes. The respondents stated that puberty is a maturity period characterized by significant physical, psychological, and emotional changes. The respondents also expressed that they were surprised by the changes they experienced. In addition, for them, puberty is the beginning of new obligations in their social environment. Attraction to the opposite sex makes them more careful and they must be able to control themselves. The need to share friends and role models is one of their recognitions in puberty. Other than that sex education indeed for better information.  This study can be used as a reference for understanding the needs of adolescents regarding puberty so that they can better adapt and maintain sexual and reproductive health for good health and well being.


  • Open Access

    WORKSHOP ON EARLY DETECTION OF CONGENITAL DISORDERS FOR KNOWLEDGE UPDATE AND IMPROVEMENT OF PRIMARY HEALTH CARE PERSONNEL IN PROBOLINGGO CITY

    by Bella Amanda, Rimbun, Zakiyatul Faizah, Tri Hartini Yuliawati, Puguh Setyo Nugroho, Yuni Hisbiyah

    Congenital disorders are a group of rare diseases and one of the health problems that are often overlooked. Congenital disorder needs to get more attention because it can affect the quality of life of the patient and the affected family. Because of its impact on the patient's quality of life in the future, early detection is needed to be able to provide early intervention and minimize long-term effects. Doctors who work in primary health facilities have an important role in early detection of congenital abnormalities in the community. They are one of the first health workers visited by the community when they have questions and complaints about certain diseases. Improvement and update of knowledge for health workers is very important as an effort to reduce mortality and morbidity caused by congenital abnormalities. This community service is carried out by holding training activities for early detection of congenital abnormalities aimed at doctors who work in primary health care facilities. Increased knowledge of community service participants showed significant results (p

  • Open Access

    Treatment with Mammalian Ste-20-like Kinase 1/2 (MST1/2) Inhibitor XMU-MP-1 Improves Glucose Tolerance in Streptozotocin-Induced Diabetes Mice

    by Zakiyatul Faizah, Bella Amanda, Faisal Yusuf Ashari, Efta Triastuti, Rebecca Oxtoby, Anny Setijo Rahaju, M. Aminudin Aziz, Maria Inge Lusida, Delvac Oceandy

    Diabetes mellitus (DM) is one of the major causes of death in the world. There are two types of DM—type 1 DM and type 2 DM. Type 1 DM can only be treated by insulin injection whereas type 2 DM is commonly treated using anti-hyperglycemic agents. Despite its effectiveness in controlling blood glucose level, this therapeutic approach is not able to reduce the decline in the number of functional pancreatic β cells. MST1 is a strong pro-apoptotic kinase that is expressed in pancreatic β cells. It induces β cell death and impairs insulin secretion. Recently, a potent and specific inhibitor for MST1, called XMU-MP-1, was identified and characterized. We hypothesized that treatment with XMU-MP-1 would produce beneficial effects by improving the survival and function of the pancreatic β cells. We used INS-1 cells and STZ-induced diabetic mice as in vitro and in vivo models to test the effect of XMU-MP-1 treatment. We found that XMU-MP-1 inhibited MST1/2 activity in INS-1 cells. Moreover, treatment with XMU-MP-1 produced a beneficial effect in improving glucose tolerance in the STZ-induced diabetic mouse model. Histological analysis indicated that XMU-MP-1 increased the number of pancreatic β cells and enhanced Langerhans islet area in the severe diabetic mice. Overall, this study showed that MST1 could become a promising therapeutic target for diabetes mellitus.