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Journal articles on the topic 'STEROPES'

Author: Grafiati

Published: 7 June 2025

Last updated: 2 August 2025

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1

McCone, Kim. "Warriors’ blazing heads and eyes, Cú Chulainn and other fiery cyclopes, ‘bright’ Balar, and the etymology of Old Irish cáech ‘one-eyed’." Zeitschrift für celtische Philologie 69, no. 1 (2022): 183–200. http://dx.doi.org/10.1515/zcph-2022-0003.

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Zusammenfassung Feurige Ausstrahlungen aus dem Kopf bzw. den Augen eines von Wut erhitzten Kriegers sind in den Literaturen mehrerer indogermanischer Völker belegt. Die Möglichkeit, derartige und andere feurige Aspekte mit dem anderswo (z. B. McCone 1996 und 2021) untersuchten kriegerischen Merkmal der Einäugigkeit zu verbinden, begründet einen offensichtlichen bzw. vermuteten etymologischen Zusammenhang zwischen Licht oder dgl. und sowohl den Namen einiger mythischer Zyklopen (z. B. Arges, Steropes und Balar) als auch gewissen Bezeichnungen der Einäugigkeit im allgemeinen wie lat. luscus und

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2

Ausich, William I., Elizabeth C. Rhenberg, and David L. Meyer. "Batocrinidae (Crinoidea) from the Lower Mississippian (lower Viséan) Fort Payne Formation of Kentucky, Tennessee, and Alabama: systematics, geographic occurrences, and facies distribution." Journal of Paleontology 92, no. 4 (2018): 681–712. http://dx.doi.org/10.1017/jpa.2017.135.

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AbstractThe Batocrinidae are characteristic faunal elements in Lower Mississippian shallow-marine settings in North America. Recent delineation of objectively defined genera allows a reexamination of batocrinid species and their distribution in the Fort Payne Formation (early Viséan, late Osagean), a well-studied array of carbonate and siliciclastic facies. The Fort Payne batocrinid fauna has 14 species assigned to six genera, plus hybrid specimens.Magnuscrinus spinosus(Miller and Gurley, 1895a) is reassigned to its original placement inEretmocrinus. Hybrid specimens (Ausich and Meyer, 1994) a

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3

Fischer, Robert T., and James M. Trzaskos. "Analysis of sterols and other biologically significant steroids." Analytical Biochemistry 183, no. 2 (1989): 325. http://dx.doi.org/10.1016/0003-2697(89)90487-9.

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4

Kopylov, Arthur T., Kristina A. Malsagova, Alexander A. Stepanov, and Anna L. Kaysheva. "Diversity of Plant Sterols Metabolism: The Impact on Human Health, Sport, and Accumulation of Contaminating Sterols." Nutrients 13, no. 5 (2021): 1623. http://dx.doi.org/10.3390/nu13051623.

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The way of plant sterols transformation and their benefits for humans is still a question under the massive continuing revision. In fact, there are no receptors for binding with sterols in mammalians. However, possible biotransformation to steroids that can be catalyzed by gastro-intestinal microflora, microbial cells in prebiotics or cytochromes system were repeatedly reported. Some products of sterols metabolization are capable to imitate resident human steroids and compete with them for the binding with corresponding receptors, thus affecting endocrine balance and entire physiology conditio

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5

P., Vijayashalini, Anjanadevi N., and Abirami P. "PRELIMINARY PHYTOCHEMICAL SCREENING AND GC-MS PROFILING OF AN ENDANGERED MEDICINAL PLANT BRYONIA LACINIOSA L." International Journal of Applied and Advanced Scientific Research 1, no. 1 (2016): 181–85. https://doi.org/10.5281/zenodo.168221.

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Petroleum ether and benzene leaf extracts of an endangered medicinal plant <em>Bryonia laciniosa</em> L was screened for primary and secondary metabolites and GC-MS profiling. Phytochemical screening of benzene and petroleum ether solvent extracts of <em>Bryonia</em> leaf showed the presence of Carbohydrates, proteins and amino acids, alkaloids, anthraquinones, flavonoids, glycosides, phenols, tannins, and triterpenoids. Both the extracts showed negative response to saponin and volatile oil. The petroleum extract showed Positive response to steroids and sterols and benzene extract did not resp

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6

Ali Esmail Al-Snafi. "Pharmacological and toxicological effects of the Ranunculus species (Ranunculus arvensis and Ranunculus sceleratus) grown in Iraq." International Journal of Biological and Pharmaceutical Sciences Archive 3, no. 1 (2022): 064–72. http://dx.doi.org/10.53771/ijbpsa.2022.3.1.0032.

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The current review revealed that Ranunculus arvensis contained carbohydrates, protein, amino acids, tannins, glycosides, phenols steroids, sterols, saponosides, leucoanthocyanes, di and tri terpenes, coumarins and flavanoids. It possessed antimicrobial, antioxidant and antitumor effects. Ranunculus sceleratus contained amino acid, proteins, alkaloids, phytosterols, flavonoids, steroids, fatty acid, terpenoids, phenols, saponin, tannins and resins. It exerted antibacterial, antifungal, antiviral, antiparasitic, antioxidant and anti-inflammatory effects. However both species were not free from a

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7

Byakov, Artem, Mikhail Karpov, Nikolai Strizhov, and Marina Donova. "Creation and Characterization of Mycolicibacterium Smegmatis mc²155 with Deletions in Genes Encoding Sterol Oxidation Enzymes." BIO Web of Conferences 57 (2023): 03004. http://dx.doi.org/10.1051/bioconf/20235703004.

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The fast-growing saprotrophic strain Mycolicibacterium smegmatis mc2155 is capable of utilizing plant and animal sterols and can be used for creation of genetically engineered strains producing biologically active steroids. Oxidation of the 3β-hydroxyl group and Δ5(6)→Δ4(5) double bond isomerization followed by formation of stenones from sterols are considered as the initial stage of steroid catabolism in some actinobacteria. The study of the mechanism of steroid nucleus 3β-hydroxyl group oxidation is relevant for the creation of a method of the microbiological production of valuable 3β-hydrox

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8

Ahmad, S., P. K. Roy, A. W. Khan, S. K. Basu, and B. N. Johri. "Microbial transformation of sterols to C19-steroids by Rhodococcus equi." World Journal of Microbiology & Biotechnology 7, no. 5 (1991): 557–61. http://dx.doi.org/10.1007/bf00368360.

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9

Goetschel, Ruth, and Raphael Bar. "Formation of mixed crystals in microbial conversion of sterols and steroids." Enzyme and Microbial Technology 14, no. 6 (1992): 462–69. http://dx.doi.org/10.1016/0141-0229(92)90138-e.

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10

Mazzuca, Marcia, and Vilma T. Balzaretti. "Fatty acids, sterols and other steroids from seeds of PatagonianProsopis species." Journal of the Science of Food and Agriculture 83, no. 10 (2003): 1072–75. http://dx.doi.org/10.1002/jsfa.1510.

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11

Sain, Sonam, Sangeeta Saini, Suvitha S.V, and Nilkanth Upadhyaya. "UNDERSTANDING THE THERAPEUTIC AND PHARMACOLOGICAL EFFECTS OF COMMI-PHORA MUKUL (GUGGULU): A CRITICAL REVIEW." International Ayurvedic Medical Journal 9, no. 11 (2021): 2769–74. http://dx.doi.org/10.46607/iamj2009112021.

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Guggulu has been a key element in the ancient Indian Ayurvedic system of medication. It has been used extensively by Ayurvedic Acharya for thousands of years to treat a large variety of disorders, besides its use in the pharmaceutical and perfume industries. Guggulu is a gum or resin extracted from the plant Commiphora mukul or Guggulu tree. Guggulu is a shrub or small tree belonging to Burseraceae family. a small perennial tree or shrub up to 1.2-1.8 m high, occurring in rocky tracts of Rajasthan, Barar, Khandesh, Maisoor, Kathiyabad, Belari. Exudate is collected during the winter season by m

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12

Batth, Rituraj, Clément Nicolle, Ilenuta Simina Cuciurean, and Henrik Toft Simonsen. "Biosynthesis and Industrial Production of Androsteroids." Plants 9, no. 9 (2020): 1144. http://dx.doi.org/10.3390/plants9091144.

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Steroids are a group of organic compounds that include sex hormones, adrenal cortical hormones, sterols, and phytosterols. In mammals, steroid biosynthesis starts from cholesterol via multiple steps to the final steroid and occurs in the gonads, adrenal glands, and placenta. This highly regulated pathway involves several cytochrome P450, as well as different dehydrogenases and reductases. Steroids in mammals have also been associated with drug production. Steroid pharmaceuticals such as testosterone and progesterone represent the second largest category of marketed medical products. There hete

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13

Baker, Doha H. Abou, Eman A. Ibrahim, Ahmed Kandeil, and Farouk K. El Baz. "STEROLS BIOACTIVITY OF RUTA GRAVEOLENS L. AND MURRAYA PANICULATA L." International Journal of Pharmacy and Pharmaceutical Sciences 9, no. 2 (2017): 103. http://dx.doi.org/10.22159/ijpps.2017v9i2.15790.

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<p><strong>Objective: </strong><em>Ruta graveolens </em>L. (<em>R. graveolens</em>) and <em>Murraya paniculata </em>L. (<em>M. paniculata</em>) are medicinal plants belonging to Rutaceae family have many uses in traditional medicine. The aim of the present study was to investigate sterols bioactivity of the two Rutaceae plant leaves.</p><p><strong>Methods: </strong>Sterols of the two Rutaceae plant leaves were identified using GC/MS. The antioxidant activities of the sterols of these herbs were evaluated

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14

Silbernagel, Günther, and Winfried März. "Pflanzliche Sterole: Risikofaktoren für kardiovaskuläre Erkrankungen? / Plant sterols: Cardiovascular risk factors?" LaboratoriumsMedizin 32, no. 4 (2008): 209–18. http://dx.doi.org/10.1515/jlm.2008.040.

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15

Vanden Bossche, Hugo. "A wealth of information Analysis of sterols and other biologically significant steroids." Trends in Biochemical Sciences 15, no. 5 (1990): 209. http://dx.doi.org/10.1016/0968-0004(90)90165-8.

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16

Tang, Rui, Junhao Liang, Xiangfeng Jing, and Tongxian Liu. "Discrepancy in Sterol Usage between Two Polyphagous Caterpillars, Mythimna separata and Spodoptera frugiperda." Insects 13, no. 10 (2022): 876. http://dx.doi.org/10.3390/insects13100876.

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Insects are sterol auxotrophs and typically obtain sterols from food. However, the sterol demand and metabolic capacity vary greatly among species, even for closely related species. The low survival of many insects on atypical sterols, such as cholestanol and cholestanone, raises the possibility of using sterol-modified plants to control insect herbivore pests. In this study, we evaluated two devastating migratory crop pests, Mythimna separata and Spodoptera frugiperda, in response to atypical sterols and explored the reasons that caused the divergences in sterol nutritional biology between th

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17

Gauvin, Anne, Jacqueline Smadja, Maurice Aknin, Robert Faure та Emile-Marcel Gaydou. "Isolation of bioactive 5α,8α-epidioxy sterols from the marine sponge Luffariella cf. variabilis". Canadian Journal of Chemistry 78, № 7 (2000): 986–92. http://dx.doi.org/10.1139/v00-083.

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The lipid extract of the marine sponge Luffariella cf. variabilis from Mayotte (Indian Ocean) has proven to be an extraordinarily rich source of a wide variety of unusual steroids belonging to the 5α,8α-epidioxy sterol family. Ten epidioxy sterols have been identified: 5α,8α-epidioxycholesta-6,22-dien-3β-ol, 5α,8α-epidioxycholest-6-en-3β-ol, 5α,8α-epidioxy-24(ξ)-methylcholesta-6,22-dien-3β-ol, 5α,8α-epidioxy-24(S)-methylcholest-6-en-3β-ol and its epimer (24R), 5α,8α-epidioxy-24(S)-ethylcholesta-6,22-dien-3β-ol and its epimer (24R), 5α,8α-epidioxy-24(S)-ethylcholest-6-en-3β-ol and its epimer (2

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18

de, Rosa, Carmine Iodice, Jordan Nechev, Kamen Stefanov, and Simeon Popov. "Composition of the lipophilic extract from the sponge Suberites domuncula." Journal of the Serbian Chemical Society 68, no. 4-5 (2003): 249–56. http://dx.doi.org/10.2298/jsc0305249d.

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The composition of the lipophylic extract from the sponge Suberites domuncula was investigated. Lipids and their fatty acids, as well as volatile compounds and sterols were identified. Stanols are the main class of steroids in the investigated sponge. A high concentration of unsaturated long chain fatty acids (C26?C28) was identified. The presence of branched and odd fatty acids indicates associated bacteria in the sponge.

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19

Seldes, Alicia M., Mónica E. Deluca, Eduardo G. Grosa, Juana Rovirosa, Aurelio San-Martín, and José Darias. "Steroids from Aquatic Organisms, XIX. New Sterols from the Antarctic Sponge Artemisina apollinis." Zeitschrift für Naturforschung B 45, no. 1 (1990): 83–86. http://dx.doi.org/10.1515/znb-1990-0116.

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Abstract The steroidal composition of the sponge Artemisina apollinis from the Antarctic Ocean was studied by GC-MS and 'H NMR. The sponge contains twenty-eight C 25—C30 derivatives having four different types of nucleus: 3/3-hydroxy-5aH-, 3-keto-5aH-derivatives, 3/3-hydroxy-zl5-and 3/?-hydroxy-zl7-derivatives. Compounds with the first two nucleus are the most abundant, with similar side chain patterns and identical GC profiles. The 3-keto-5aH-derivatives constitute a new group of natural products.

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20

Adamski, Jerzy, Frauke Leenders, Joshua F. Carstensen, et al. "Steroids, fatty acyl-CoA, and sterols are substrates of 80-kDa multifunctional protein." Steroids 62, no. 1 (1997): 159–63. http://dx.doi.org/10.1016/s0039-128x(96)00175-4.

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21

G.J. Beckett. "Steroid analysis in the pharmaceutical industry: Hormonal steroids, sterols, vitamin D, cardiac glycosides." Clinica Chimica Acta 190, no. 1-2 (1990): 127. http://dx.doi.org/10.1016/0009-8981(90)90292-z.

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22

Szaleniec, Maciej, Agnieszka Rugor, Tomasz Janeczko, Mateusz Hochołowski, and Maciej Guzik. "Selective modifications of steroids and sterols by enzymes from bacterial cholesterol degradation pathway." New Biotechnology 33 (July 2016): S107. http://dx.doi.org/10.1016/j.nbt.2016.06.1094.

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23

Halkes, S. J., A. B. van Etten, T. L. Postmus, J. S. Bontekoe та M. P. Rappoldt. "Investigations on sterols. 40. The synthesis of ring D substituted 9β,10α-steroids". Recueil des Travaux Chimiques des Pays-Bas 98, № 3 (2010): 78–81. http://dx.doi.org/10.1002/recl.19790980307.

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24

Westerhof, P., J. Hartog та S. J. Halkes. "Investigations on sterols XXVI: Synthesis and properties of 6-substituted 9β,10α-steroids". Recueil des Travaux Chimiques des Pays-Bas 84, № 7 (2010): 863–84. http://dx.doi.org/10.1002/recl.19650840708.

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25

Lobastova, Tatyana, Victoria Fokina, Irina Pozdnyakova-Filatova, Sergey Tarlachkov, Andrey Shutov, and Marina Donova. "Insight into Different Stages of Steroid Degradation in Thermophilic Saccharopolyspora hirsuta VKM Ac-666T Strain." International Journal of Molecular Sciences 23, no. 24 (2022): 16174. http://dx.doi.org/10.3390/ijms232416174.

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Steroids are abundant molecules in nature, and various microorganisms evolved to utilize steroids. Thermophilic actinobacteria play an important role in such processes. However, very few thermophiles have so far been reported capable of degrading or modifying natural sterols. Recently, genes putatively involved in the sterol catabolic pathway have been revealed in the moderately thermophilic actinobacterium Saccharopolyspora hirsuta VKM Ac-666T, but peculiarities of strain activity toward sterols are still poorly understood. S. hirsuta catalyzed cholesterol bioconversion at a rate significantl

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26

Tiwari, Rashi, René Köffel, and Roger Schneiter. "An acetylation/deacetylation cycle controls the export of sterols and steroids from S. cerevisiae." EMBO Journal 26, no. 24 (2007): 5109–19. http://dx.doi.org/10.1038/sj.emboj.7601924.

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27

Firmanul Arifin, Yudi, Eko Suhartono, and Siti Hamidah. "Relationship between growth sites and content of steroids and sterols from Pikajar (Schizaea digitata)." IOP Conference Series: Earth and Environmental Science 528 (July 22, 2020): 012030. http://dx.doi.org/10.1088/1755-1315/528/1/012030.

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28

Mondy, Nathalie, Vincent Grossi, Eva Cathalan, Jean-Paul Delbecque, Florian Mermillod-Blondin, and Christophe J. Douady. "Sterols and steroids in a freshwater crustacean (Proasellus meridianus): hormonal response to nutritional input." Invertebrate Biology 133, no. 1 (2014): 99–107. http://dx.doi.org/10.1111/ivb.12044.

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29

Vanhanen, H., Y. A. Kesäniemi, and T. A. Miettinen. "Pravastatin lowers serum cholesterol, cholesterol-precursor sterols, fecal steroids, and cholesterol absorption in man." Metabolism 41, no. 6 (1992): 588–95. http://dx.doi.org/10.1016/0026-0495(92)90050-k.

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30

Manconi, R., V. Piccialli, R. Pronzato, and D. Sica. "Steroids in porifera, sterols from freshwater sponges Ephydatia fluviatilis (L.) and Spongilla lacustris (L.)." Comparative Biochemistry and Physiology Part B: Comparative Biochemistry 91, no. 2 (1988): 237–45. http://dx.doi.org/10.1016/0305-0491(88)90138-1.

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31

Westerhof, P., та J. Hartog. "Investigations on sterols XXIX: Synthesis and properties of some 6,7-dehydro-9β,10α-steroids". Recueil des Travaux Chimiques des Pays-Bas 84, № 7 (2010): 918–31. http://dx.doi.org/10.1002/recl.19650840712.

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32

Zhao, Ming, Xiangfei Li, Liangbin Xiong, et al. "Green Manufacturing of Steroids via Mycolicbacteria: Current Status and Development Trends." Fermentation 9, no. 10 (2023): 890. http://dx.doi.org/10.3390/fermentation9100890.

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Steroids, the second largest drug category ranked after antibiotics, find widespread use in treatments for reproductive health, endocrine regulation, and inflammation. Advances in steroidal chemistry to date have led to the widespread use of sterols as starting substances in the development of environmentally friendly biotechnologies for steroid production, including biocatalysis, microbial transformations, and biosynthesis using engineered micro-organisms. In this review, we synthesize some of the recent advancements in steroid biocatalysis using the Mycolicibacterium species, including the i

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33

Zhao, Jin-Xin, Shan-Shan Shi, Li Sheng, Jia Li, and Jian-Min Yue. "Terpenoids and Steroids from Euphorbia hypericifolia." Natural Product Communications 10, no. 12 (2015): 1934578X1501001. http://dx.doi.org/10.1177/1934578x1501001209.

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Two new triterpenoids and two new sterols, named euphyperins A-D (1–4), including an oleanane-type triterpenoid (1), a lupane-type nortriterpenoid (2), and two cholestane-type steroids (3 and 4), along with five known compounds (5–9) were isolated from the twigs and leaves of Euphorbia hypericifolia. Euphyperin B (2) represents a rare lupane-type nortriterpenoid, and euphyperin C (3) is a novel 8,14-secocholestane-type steroid. Euphyperin A (1) exhibited moderate PTP1B inhibitory activity with an IC50 = 17.05 ± 1.12 μg/mL.

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Rogowska, Agata, Cezary Pączkowski, and Anna Szakiel. "Modulation of Steroid and Triterpenoid Metabolism in Calendula officinalis Plants and Hairy Root Cultures Exposed to Cadmium Stress." International Journal of Molecular Sciences 23, no. 10 (2022): 5640. http://dx.doi.org/10.3390/ijms23105640.

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The present study investigated the changes in the content of steroids and triterpenoids in C. officinalis hairy root cultures and plants exposed to cadmium stress. The observed effects included the content and composition of analyzed groups of compounds, particularly the proportions among individual sterols (e.g., stigmasterol-to-sitosterol ratio), their ester and glycoside conjugates. The total sterol content increased in roots (by 30%) and hairy root culture (by 44%), whereas it decreased in shoots (by 15%); moreover, these effects were inversely correlated with Cd-induced growth suppression

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35

Biliavska, L. O., A. M. Ostapchuk, S. I. Voychuk, and G. O. Iutynska. "Sterols biosynthesis by soil streptomycetes." Ukrainian Biochemical Journal 89, no. 2 (2017): 78–84. http://dx.doi.org/10.15407/ubj89.02.078.

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Ali Esmail Al-Snafi, Hussein Ali Al-Saedy, Tayseer Ali Talab, Wajdi Jabbar Majid, Gaber El-Saber Batiha, and Jafari-Sales Abolfazl. "The bioactive ingredients and therapeutic effects of Marrubium vulgare - A review." International Journal of Biological and Pharmaceutical Sciences Archive 1, no. 2 (2021): 09–021. http://dx.doi.org/10.30574/ijbpsa.2021.1.2.0301.

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Marrubium vulgare (Family: Lamiaceae) was used traditionally in the treatment of dyspeptic complains, pulmonary infections, cough, rheumatoid arthritis, night blindness, loss of appetite, as cholagogue, purgative, diuretic, bitter tonic, carminative and appetizer. The phytochemical analysis revealed that the plant contained alkaloids, sterols, steroids, terpenoids (diterpene), saponins, flavonoid, catecholic tannins, anthocyans, phenolic compounds and many other bioactive ingredients. The pharmacological investigations showed that the plant exerted anti-inflammatory, antiedematogenic, analgesi

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Menon, Rani, Sara E. Watson, Laura N. Thomas та ін. "Diet Complexity and Estrogen Receptor β Status Affect the Composition of the Murine Intestinal Microbiota". Applied and Environmental Microbiology 79, № 18 (2013): 5763–73. http://dx.doi.org/10.1128/aem.01182-13.

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ABSTRACTIntestinal microbial dysbiosis contributes to the dysmetabolism of luminal factors, including steroid hormones (sterones) that affect the development of chronic gastrointestinal inflammation and the incidence of sterone-responsive cancers of the breast, prostate, and colon. Little is known, however, about the role of specific host sterone nucleoreceptors, including estrogen receptor β (ERβ), in microbiota maintenance. Herein, we test the hypothesis that ERβ status affects microbiota composition and determine if such compositionally distinct microbiota respond differently to changes in

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38

Seldes, A. M., J. Rovirosa, A. San Martín, and E. G. Gros. "Steroids from aquatic organisms—XII. Sterols from the antarctic sponge Homaxinella balfourensis (Ridley and Dendy)." Comparative Biochemistry and Physiology Part B: Comparative Biochemistry 83, no. 4 (1986): 841–42. http://dx.doi.org/10.1016/0305-0491(86)90157-4.

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39

Jing, Xiangfeng, Heiko Vogel, Robert J. Grebenok, Keyan Zhu-Salzman, and Spencer T. Behmer. "Dietary sterols/steroids and the generalist caterpillar Helicoverpa zea: Physiology, biochemistry and midgut gene expression." Insect Biochemistry and Molecular Biology 42, no. 11 (2012): 835–45. http://dx.doi.org/10.1016/j.ibmb.2012.07.009.

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40

Sykłowska-Baranek, Katarzyna, Monika Kamińska, Cezary Pączkowski, Agnieszka Pietrosiuk, and Anna Szakiel. "Metabolic Modifications in Terpenoid and Steroid Pathways Triggered by Methyl Jasmonate in Taxus × media Hairy Roots." Plants 11, no. 9 (2022): 1120. http://dx.doi.org/10.3390/plants11091120.

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The in vitro cultures of Taxus spp. were one of the first plant in vitro systems proved to exert the positive effect of elicitation with methyl jasmonate (MeJA) on the biosynthesis of specialized metabolites. The main aim of the present study is to examine the effect of MeJA treatment on the steroid and triterpenoid content of two genetically different hairy root lines of Taxus × media, KT and ATMA. The results revealed that the two lines differed in the total content of steroids and triterpenoids (in the ATMA root line, their amounts were lower than those in the KT line by 43% and 30%, respec

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41

Dlugovitzky, Diana G., María Sol Fontela, Diego J. Martinel Lamas, Ricardo A. Valdez, and Marta C. Romano. "Mycobacterium smegmatis synthesizes in vitro androgens and estrogens from different steroid precursors." Canadian Journal of Microbiology 61, no. 7 (2015): 451–55. http://dx.doi.org/10.1139/cjm-2015-0025.

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Fast-growing mycobacteria such as Mycobacterium sp. and Mycobacterium smegmatis degrade natural sterols. They are a model to study tuberculosis. Interestingly, M. smegmatis has been found in river effluents derived from paper production, and therefore, it would be important to gain further insight into its capacity to synthesize steroids that are potential endocrine disruptors affecting the development and reproduction of fishes. To our knowledge, the capacity of M. smegmatis to synthesize estrogens and even testosterone has not been previously reported. Therefore, the objective of this study

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42

Jabeen, Shazia, Nazia Amir, and Syeda Shaima Meryem. "Qualitative and Quantitative Assesment of Phytochemicals in Selected Medicinal Plants native to Shujabad, Punjab, Pakistan." Pakistan Journal of Biochemistry and Biotechnology 3, no. 1 (2022): 161–74. http://dx.doi.org/10.52700/pjbb.v3i1.128.

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The present study aimed at screening of phytochemicals qualitatively and quantitatively in six selected medicinal plants native to Shujabad, Multan, Pakistan. Screening of various phytochemicals (phenols, tannins, flavonoids, saponins, glycosides, steroids, terpenoids, anthocayanins, phlobatannins, coumarins, triterpenoids, cardiac glycosides, sterols and alkaloids)was done by preparing plant leaf extracts in different solvents i.e., ethanol, methanol and water. Optical density of total phenolic and alkaloid compounds was measured via UV-Visible spectrophotometer at 640 nm and 470 nm res

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Shen, Yan, Volker Thiel, Pablo Suarez-Gonzalez, Sebastiaan W. Rampen, and Joachim Reitner. "Sterol preservation in hypersaline microbial mats." Biogeosciences 17, no. 3 (2020): 649–66. http://dx.doi.org/10.5194/bg-17-649-2020.

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Abstract. Microbial mats are self-sustaining benthic ecosystems composed of highly diverse microbial communities. It has been proposed that microbial mats were widespread in Proterozoic marine environments, prior to the emergence of bioturbating organisms at the Precambrian–Cambrian transition. One characteristic feature of Precambrian biomarker records is that steranes are typically absent or occur in very low concentrations. This has been explained by low eukaryotic source inputs, or degradation of primary produced sterols in benthic microbial mats (“mat-seal effect”). To better understand t

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Doden, Heidi L., and Jason M. Ridlon. "Microbial Hydroxysteroid Dehydrogenases: From Alpha to Omega." Microorganisms 9, no. 3 (2021): 469. http://dx.doi.org/10.3390/microorganisms9030469.

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Bile acids (BAs) and glucocorticoids are steroid hormones derived from cholesterol that are important signaling molecules in humans and other vertebrates. Hydroxysteroid dehydrogenases (HSDHs) are encoded both by the host and by their resident gut microbiota, and they reversibly convert steroid hydroxyl groups to keto groups. Pairs of HSDHs can reversibly epimerize steroids from α-hydroxy conformations to β-hydroxy, or β-hydroxy to ω-hydroxy in the case of ω-muricholic acid. These reactions often result in products with drastically different physicochemical properties than their precursors, wh

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Shaaban, Mohamed, Mohamed A. Ghani, and Khaled A. Shaaban. "Zahramycins A-B, Two New Steroids from the Coral Sarcophyton trocheliophorum." Zeitschrift für Naturforschung B 68, no. 8 (2013): 939–45. http://dx.doi.org/10.5560/znb.2013-3131.

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Two new poly-hydroxy steroids, zahramycins A (1) and B (2), have been isolated from the polar fraction of the extract of the coral Sarcophyton trocheliophorum. Compound 1 was confirmed to bear an oxirane ring at C-5 and C-6, while 2 has a keto-hydroxy sterol structure. The known DNA primary metabolites uracil, thymine, adenine, uridine, 2´-deoxyuridine, and thymidine were also isolated and identified. Structures of the new sterols 1 and 2 were confirmed by NMR ( 1H, 13C, 1H-1H COSY, HMQC, HMBC, and NOESY) spectroscopy, mass spectrometry (EI, ESI, and HRMS), and by comparison with related struc

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., K. Bouhadjera, T. Kebir ., A. Baba-Ahmed ., and M. Bendahou . "Anti-microbial Activity of the Sterols and Steroids Extracted from the Algerian Oudneya africana R. Br." Pakistan Journal of Biological Sciences 8, no. 6 (2005): 834–38. http://dx.doi.org/10.3923/pjbs.2005.834.838.

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Tsafriri, A., X. Cao, H. Ashkenazi, S. Motola, M. Popliker, and S. H. Pomerantz. "Resumption of oocyte meiosis in mammals: On models, meiosis activating sterols, steroids and EGF-like factors." Molecular and Cellular Endocrinology 234, no. 1-2 (2005): 37–45. http://dx.doi.org/10.1016/j.mce.2004.09.009.

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Peri, Alessandro, Giovanna Danza, Susanna Benvenuti, et al. "New insights on the neuroprotective role of sterols and sex steroids: The seladin-1/DHCR24 paradigm." Frontiers in Neuroendocrinology 30, no. 2 (2009): 119–29. http://dx.doi.org/10.1016/j.yfrne.2009.03.006.

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KOBAYASHI, Masaru, Madala M. KRISHNA, Keisuke ISHIDA, and Vallurupalli ANJANEYULU. "Marine Sterols. XXII. Occurrence of 3-Oxo-4,6,8(14)-triunsaturated Steroids in the Sponge Dysidea herbacea." CHEMICAL & PHARMACEUTICAL BULLETIN 40, no. 1 (1992): 72–74. http://dx.doi.org/10.1248/cpb.40.72.

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Carvalho, João F. S., M. Manuel Cruz Silva, João N. Moreira, Sérgio Simões, and M. Luisa Sá e Melo. "Sterols as Anticancer Agents: Synthesis of Ring-B Oxygenated Steroids, Cytotoxic Profile, and Comprehensive SAR Analysis." Journal of Medicinal Chemistry 53, no. 21 (2010): 7632–38. http://dx.doi.org/10.1021/jm1007769.

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