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"Penelitian kromosom meiosis dan berbagai tahapan pembelahan sel dari beberapa stages perkembangan bunga Hibiscus schizopetalus telah dilakukan sejak bulan Maret hingga Mei 2018. Penelitian ini mengamati kromosom meiosis dan melihat berbagai tahapan pembelahan sel yang ditemukan pada stage 1 sampai 6 yang dikaitkan dengan proses mikrosporogenesis dan karakteristik kromosom haploid atau diploid yang ditemukan pada tiap stages tersebut. Sampel kuncup bunga yang digunakan dalam penelitian diisolasi dari stage 1 sampai 6 dan dikumpulkan pada pukul 09.00 WIB. Sampel kuncup bunga yang berada pada stage 1 sampai 3 diisolasi dari bagian calyx dan epicalyx-nya, sedangkan sampel kuncup bunga yang berada pada stage 4 sampai 6 diisolasi bagian anther-nya untuk digunakan dalam penelitian. Preparat kromosom dibuat dengan menggunakan metode squash aceto-orcein. Hasil pengamatan kromosom menunjukkan bahwa kecenderungan pembelahan meiosis 1 ditemukan pada stage 1 sampai 3, sedangkan pembelahan meiosis 2 cenderung ditemukan pada stage 4 sampai 6. Struktur mikrospora diketahui ditemukan pada stage 4, 5, dan 6, sedangkan struktur polen ditemukan pada stage 6. Peluang ditemukannya kromosom yang bersifat haploid semakin tinggi seiring dengan peningkatan stages perkembangan bunga. Diperlukan studi lebih lanjut terkait kromosom dan pembelahan sel pada stages perkembangan bunga dari tanaman lain.

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The research on meiotic chromosome and various cell division phases from several stages of Hibiscus schizopetalus flower development had been conducted from March to May 2018. This research observed meiotic chromosome and discovered the various cell division phases that took place in stages 1 to 6 of the flower developmental stages. The association of the results with the process of microsporogenesis and the chromosomal characteristics haploid or diploid which were found at those stages were further assessed.

Flower buds that were used in the study were isolated from stages 1 to 6 and were collected at 9 A.M. Flower buds from stages 1 to 3 were isolated from the calyx and epicalyx, while flower buds from stages 4 to 6 were isolated on the anther part. Chromosome preparation was carried out using the method of aceto orcein squash.

The result of chromosomal observation found that the tendency of meiosis 1 was found in stages 1 to 3, whereas meiosis 2 tended to be found in stages 4 to 6. The microspore structure was found in stage 4, 5, and 6, while the structure of pollen was found in stage 6. Haploid chromosomes were found to increase along with the increase of the stages of flower development. Further studies are needed to learn more about chromosome and cell division in the flower developmental stages of other plants. "

"Gangguan keseimbangan hormonal dapat menyebabkan infertilitas pada pria, salah satunya adalah Hipogonadisme. Hipogonadisme ditandai dengan abnormalitas kadar hormon testosteron yang dapat mengganggu proses spermatogenesis. Kuda laut ( Hippocampus spp.) merupakan sumber daya kelautan yang digunakan sebagai pengobatan tradisional di wilayah asia untuk mengatasi infertilitas pada pria. Hippocampus comes merupakan salah satu spesies kuda laut yang memiliki habitat di perairan Indonesia, namun belum banyak penelitian yang meneliti pengaruh spesies kuda laut ini terhadap biomarker terkait infertilitas pria, terutama kadar Luteinizing Hormone sebagai hormon gonadotropin yang menstimulasi sekresi hormon testosteron, serta kajian histologi testikuler mengenai indeks meiosis dan indeks sel Sertoli. Induksi Depot Medroksiprogesteron asetat (DMPA) dapat mengganggu aksis hipotalamus-pituitari-gonad yang menyebabkan turunnya sekresi hormon gonadotropin serta hormon testosteron sehingga mempengaruhi proliferasi dan maturasi sel spermatogenik. Dua puluh delapan tikus jantan Sprague Dawley  diinduksikan DMPA 1,25 mg/kgBB pada minggu ke- 0 dan 12, kemudian dibagi menjadi empat kelompok, yaitu kontrol negatif (CMC Na 1%), dosis ekstrak 150 mg/kgBB, 225 mg/kgBB, dan 300 mg/kgBB. Parameter kadar LH tikus dianalisis menggunakan Enzyme-Linked Immunosorbent Assay (ELISA), sedangkan parameter indeks meiosis dan indeks sel Sertoli dianalisis melalui pemeriksaan histologi pewarnaan H&E. Hasil menunjukkan bahwa ketiga varian dosis tidak menghasilkan perbedaan yang bermakna antar kelompok pada ketiga parameter, namun cenderung mengalami peningkatan pada dosis 300 mg/kgBB setelah 18 minggu perlakuan.

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Hormonal imbalances can lead to male infertility, one of which is hypogonadism. Hypogonadism is characterized by abnormal levels of testosterone hormone that can disrupt the process of spermatogenesis. Seahorses (Hippocampus spp.) are marine resources used in traditional medicine in Asia to address male infertility. Hippocampus comes is one of the seahorse species that inhabits the waters of Indonesia, but there have been few studies examining the effects of this seahorse species on biomarkers related to male infertility, especially the levels of Luteinizing Hormone as a gonadotropin hormone that stimulates testosterone secretion as well as histological studies of testicular meiotic index and Sertoli cell index. Induction of Depot Medroxyprogesterone Acetate (DMPA) can disrupt the hypothalamic-pituitary-gonadal axis, leading to a decrease in the secretion of gonadotropin hormones and testosterone, thus affecting the proliferation and maturation of spermatogenic cells. Twenty-eight male Sprague Dawley rats were induced with 1.25 mg/kg body weight of DMPA in weeks 0 and 12, then divided into four groups: negative control (CMC Na 1%), extract dose of 150 mg/kg BW, 225 mg/kg BW, and 300 mg/kg BW. The levels of LH in the rats were analyzed using Enzyme-Linked Immunosorbent Assay (ELISA), while the meiotic index and Sertoli cell index parameters were analyzed through histological examination using H&E staining. The results showed that the three dose variants did not produce significant differences between groups in all three parameters, but tended to increase at a dose of 300 mg/kg body weight after 18 weeks of treatment."