Histological changes in the gills, livers and muscles of Oreochromis niloticus fed with steriod, natural hormone and pawpaw seed based diets

This study was conducted to evaluate the histological changes of 17αmethyl-testosterone (MT), wet testes of bull (Bos indicus), boar (Sus domesticus), bull/mud catfish testes (B. indicus/C. gariepinus) and pawpaw (Carica papaya) seed powder-based diet on the Nile tilapia fry in an indoor experimental pond. Histological changes and efficacies in producing monosex males were determined after four months. Fifty-five fry were assigned randomly to three experimental ponds in triplicates. Five experimental feeds composed of soya-bean, fish meal, wheat bran, cassava flour were formulated by adding 0.06g of 17α- methyl-testosterone, 17.47g of bull wet testes, 25.59g of boar wet testes, 20.48g of bull/catfish and 20g of pawpaw seed powder per kg of feed to group 1, 2, 3, 4, 5 respectively. Obtained results from the morphological examination revealed a significant difference (p < 0.05) in phenotypic males of the Nile tilapia fry fed with the experimental diets. The highest indistinct percentage was recorded in the 17αmethyl-testosterone-treated diet while the lowest was recorded in diets 3 and 4 with no significant differences. All the groups showed histopathological differences in the livers, gills, and muscles. However, the liver histology of groups 1 and 5 showed central vessels that are mildly congested with abundant glycogen vacuolation and somewhat fat infiltration, while the histology of the muscles of group 5 showed pathological lesions including moderate to severe necrosis. These alterations can be considered an indication of the performance and health of fish in monosex culture medium indicating effects of plant extract and MT.

Melatonin and doxorubicin synergistically enhance apoptosis via autophagy-dependent reduction of AMPKα1 transcription in human breast cancer cells

Doxorubicin is one of the most effective agents used to treat various cancers, including breast cancer, but its usage is limited by the risk of adverse effects, including cardiotoxicity. Melatonin, a natural hormone that functions as a major regulator of circadian rhythms, has been considered a supplemental component for doxorubicin due to its potential to improve its effectiveness. However, the mechanisms and biological targets of the combination of melatonin and doxorubicin with respect to cancer cell death are not well understood. In the present study, we found that melatonin synergized with doxorubicin to induce apoptosis of breast cancer cells by decreasing the expression of AMP-activated protein kinase α1 (AMPK α1), which acts as a critical survival factor for cancer cells. This cotreatment-induced reduction in AMPKα1 expression occurred at the transcriptional level via an autophagy-dependent mechanism. The synergistic effects of the combined treatment were evident in many other cancer cell lines, and melatonin was also highly effective in inducing cancer death when combined with other cancer drugs, including cisplatin, 5-fluorouracil, irinotecan, and sorafenib. AMPKα1 expression was decreased in all of these cases, suggesting that reducing AMPKα1 can be considered an effective method to increase the sensitivity of cancer cells to doxorubicin treatment.

Micropropagation of Rose (Rosa Hybrida) Using Invitro Technique by Natural Hormone

In recent years ,several Micropropagation technique has been established, to make some improved method of crop yield production the natural hormone from other plant species were selected for the beneficial result in the plant species. The Micro propagation technique is carried out in Rosa hybrida explant by providing the different natural shooting and rooting hormone in three different compositions with the half strength of MS medium , it is to predict the ability of which natural hormone is being utilized by the nodal explant of Rosa hybrida. The three different natural shooting and rooting hormone are Aloe vera gel extract and the tender coconut water with 50 ml and 100 ml and 150 ml of concentration in half strength MS media and the Cinnamon powder alone taken in the .5 g,1g and 1.5 g of concentration in half strength MS media due to the powdery form. These were proceeded in aseptic condition of propagation as a result it has been noticed that among the three natural hormone the remarkable growth has been found in the tender coconut water provided nodal segment in all the three concentration .This article has a goal to promote the use of the natural rooting role in the plant breeding industry.

Levothyroxine Administration Timing in Hypothyroidism Patients

Levothyroxine is a synthetic T4 hormone that is biochemically and physiologically identical to the natural hormone, and it is used when the body is deficient in the natural hormone. This study was conducted to summarize the current evidence that compare evidence supporting morning dose to evening dose of levothyroxine in patients with hypothyroidism‎. A simple systematic review was carried out, searching databases PubMed, Google Scholar, and EBSCO. The authors extracted the needed data. There is conflicting data regarding effectiveness of morning dose versus evening dose in management of levothyroxine. More studies reported effectiveness of bedtime dose more than breakfast dose in hypothyroidism management. Numerous studies reported effectiveness of bedtime dose more than breakfast dose in hypothyroidism management. The most resent evidences recommended that, if possible, L‐T4 be consistently taken either 60 minutes before breakfast or at bedtime (3 or more hours after the evening meal), for optimal, consistent absorption.

Aplikasi Asam Giberelin (GA) Alami dari Ekstrak Rebung untuk Meningkatkan Kualitas Buah Tomat (Lycopersicum esculentum Mill.)

The Application of Natural Gibberellic Acid (GA) from Bamboo Shoot Extract to Increase Quality of Tomato (Lycopersicum esculentum Mill). Tomato is a horticultural plant that has a lot of benefits. To increase the quality and productivity of tomatoes can be done by giving plant growth substances. This research aimed to find out the effect of natural gibberellic acid (GA) from bamboo shoot on the quality of tomatoes and to get the best natural gibberellic acid concentration from bamboo shoot to increase the quality and productivity of tomatoes. This research was designed using Randomized Block Design which consisted of 1 factor that is natural hormone concentration from bamboo shoot, with 5 treatments. Every treatment was repeated for 5 times. The standard of the treatment consisted of K0 as a control, K1 which was sprayed by 25% of bamboo shoot extract concentration, K2 which was squirted by sprayed by 50% of bamboo shoot extract concentration, K3 which was squirted by 75% of bamboo shoot extract concentration, and K4 which was sprayed by 100% of bamboo shoot extract concentration. The bamboo shoot was sprayed before the tomatoes’ flower blossomed. This research found that the application of bamboo shoot extract affected the quality of the tomatoes itself and reduced the number of seeds of tomato itself. In conclusion, the best concentration that can reduce the number of tomatoe’s seeds is the concentration of 75% (K3) compared to control one with 77%.

Melatonin Inhibits Dengue Virus Infection via the Sirtuin 1-Mediated Interferon Pathway

Dengue virus (DENV) is the causative pathogen in the life-threatening dengue hemorrhagic fever and dengue shock syndrome. DENV is transmitted to humans via the bite of an infected Aedes mosquito. Approximately 100 million people are infected annually worldwide, and most of those live in tropical and subtropical areas. There is still no effective drug or vaccine for treatment of DENV infection. In this study, we set forth to investigate the effect of melatonin, which is a natural hormone with multiple pharmacological functions, against DENV infection. Treatment with subtoxic doses of melatonin dose-dependently inhibited DENV production. Cross-protection across serotypes and various cell types was also observed. Time-of-addition assay suggested that melatonin exerts its influence during the post-entry step of viral infection. The antiviral activity of melatonin partly originates from activation of the sirtuin pathway since co-treatment with melatonin and the sirtuin 1 (SIRT1) inhibitor reversed the effect of melatonin treatment alone. Moreover, melatonin could modulate the transcription of antiviral genes that aid in suppression of DENV production. This antiviral mechanism of melatonin suggests a possible new strategy for treating DENV infection.

BODIPY Conjugate of Epibrassinolide as a Novel Biologically Active Probe for In Vivo Imaging

Brassinosteroids (BRs) are plant hormones of steroid nature, regulating various developmental and adaptive processes. The perception, transport, and signaling of BRs are actively studied nowadays via a wide range of biochemical and genetic tools. However, most of the knowledge about BRs intracellular localization and turnover relies on the visualization of the receptors or cellular compartments using dyes or fluorescent protein fusions. We have previously synthesized a conjugate of epibrassinolide with green fluorescent dye BODIPY (eBL-BODIPY). Here we present a detailed assessment of the compound bioactivity and its suitability as probe for in vivo visualization of BRs. We show that eBL-BODIPY rapidly penetrates epidermal cells of Arabidopsis thaliana roots and after long exposure causes physiological and transcriptomic responses similar to the natural hormone.

Endocrine-Disrupting Chemicals Role in Drug Abuser: A Review Study

Endocrine-disrupting Chemicals (EDCs) are exogenous chemicals that influence many aspects of natural hormone actions. Bisphenol is used in the industry, for increasing the thickness and durability of materials in certain plastics and resins. Paraben is used as preservatives in many pharmaceuticals, cosmetics, and some food products. EDCs can increase estrogen levels inside the body, and estrogen itself can increase the monoamine effect (dopamine, serotonin), neuronal excitability, neuropeptide transmitter mechanism, and drug metabolism. In drug abusers, this effect can develop greater craving behavior, addiction, and relapse.

Melatonin prevents doxorubicin-induced cardiotoxicity through suppression of AMPKα2-dependent mitochondrial damage

The clinical application of doxorubicin, one of the most effective anticancer drugs, has been limited due to its adverse effects, including cardiotoxicity. One of the hallmarks of doxorubicin-induced cytotoxicity is mitochondrial dysfunction. Despite intensive research over recent decades, there are no effective approaches for alleviating doxorubicin-induced cytotoxicity. Melatonin, a natural hormone that is primarily secreted by the pineal gland, is emerging as a promising adjuvant that protects against doxorubicin-induced cytotoxicity owing to its pharmaceutical effect of preserving mitochondrial integrity. However, the underlying mechanisms are far from completely understood. Here, we provide novel evidence that treatment of H9c2 cardiomyoblasts with doxorubicin strongly induced AMP-activated protein kinase α2 (AMPKα2), which translocated to mitochondria and interfered with their function and integrity, ultimately leading to cellular apoptosis. These phenomena were significantly blocked by melatonin treatment. The levels of AMPKα2 in murine hearts were tightly associated with cardiotoxicity in the context of doxorubicin and melatonin treatment. Therefore, our study suggests that the maintenance of mitochondrial integrity is a key factor in reducing doxorubicin-induced cytotoxicity and indicates that AMPKα2 may serve as a novel target in the design of cytoprotective combination therapies that include doxorubicin.

Strategies for the Synthesis of 19-nor-Vitamin D Analogs

1α,25-Dihydroxyvitamin D3 [1α,25-(OH)2-D3], the hormonally active form of vitamin D3, classically regulates bone formation, calcium, and phosphate homeostasis. In addition, this hormone also exerts non-classical effects in a wide variety of target tissues and cell types, such as inhibition of the proliferation and stimulation of the differentiation of normal and malignant cells. However, to produce these actions, supraphysiological doses are required resulting in calcemic effects that limit the use of this natural hormone. During the past 30 years, many structurally modified analogs of the 1α,25-(OH)2-D3 have been synthesized in order to find derivatives that can dissociate the beneficial antiproliferative effects from undesired calcemic effects. Among these candidates, 1α,25-(OH)2-19-nor-D3 analogs have shown promise as good derivatives since they show equal or better activity relative to the parent hormone but with reduced calcemic effects. In this review, we describe the synthetic strategies to obtain the 19-nor-D3 derivatives and briefly describe their physiological activities.