Pyriproxyfen (PPF) has been shown to affect the pupal stage and ecdysone levels in holometabolous insects, such as silkworms and mealworms. It remains unknown whether it affects hemimetabolous insects with their hormone levels in insects lacking a pupal stage. In this laboratory study, bioassays were conducted to investigate the effects of varying doses of PPF on Aphis craccivora Koch (Hemiptera: Aphididae).
View Article and Find Full Text PDFAllatostatin (AS) or Allatotropin (AT) is a class of insect short neuropeptide F (sNPF) that affects insect growth and development by inhibiting or promote the synthesis of juvenile hormone (JH) in different insects. III-2 is a novel sNPF analog derived from a group of nitroaromatic groups connected by different amino acids. In this study, we found that III-2 showed high insecticidal activity against S.
View Article and Find Full Text PDFJuvenile hormone III (JH III) is a crucial hormone synthesized exclusively as -stereoisomer in most insects. Herein, we established a mature Tris-HCl culture system for essential biochemical reactions and applied stable instrumental detection methods to analyze JH III, methyl farnesoate (MF) and juvenile hormone acid (JHA) using UPLC-MS/MS. Our results revealed that the -JH III terminal synthesis pathway in follows the "esterify then epoxidize" sequence, with precise methyl-(2,6)-farnesoate titer regulation and its spatial isomerism, achieving selective -JH III synthesis.
View Article and Find Full Text PDFBackground: The effect and mechanisms of the ingredients (IRAB) of Radix Achyranthis Bidentatae (RAB) on treating osteoporosis (OP) remains debated. We aimed to summary the evidence to evaluate the efficacy of IRAB for animal model OP and elucidate the potential mechanism of IRAB in the treatment of OP.
Methods: In this review and meta-analysis, we searched PubMed, EMBASE, Web of Science, Cochrane Library, Chinese National Knowledge Infrastructure, Wanfang, Chinese Biomedical Literature Database, as well as Chinese VIP databases for targeting articles published from inception to March 2023 in English or Chinese.
Background And Aim: The biological functions of non-coding RNAs (ncRNAs) have been widely identified in many human diseases. In the present study, the relationship between long non-coding RNA HOTAIR and microRNA-17-5p (miR-17-5p) and their roles in osteogenic differentiation and proliferation in non-traumatic osteonecrosis of femoral head (ONFH) were investigated.
Methods: The expression levels of HOTAIR and miR-17-5p in the mesenchymal stem cells (MSCs) derived from patients with non-traumatic ONFH and osteoarthritis (OA) were examined by real-time PCR.
Acta Crystallogr Sect E Struct Rep Online
August 2011
The asymmetric unit of the title compound, C(10)H(8)N(2)·C(9)H(10)O(8), contains a half-molecule of 2,2'-bipyridine and a half-molecule of 1,2,3,4-cyclopentanetetracarboxylic acid, both components being completed by crystallographic inversion symmetry. In the crystal, the mol-ecules are assembled into chains extending along [010] by O-H⋯N hydrogen bonds; adjacent chains are linked by O-H⋯O hydrogen bonds into a three-dimensional network.
View Article and Find Full Text PDFActa Crystallogr Sect E Struct Rep Online
July 2011
The title compound, {[Dy(2)(C(4)H(4)O(4))(3)(H(2)O)(2)]·H(2)O}(n), is isostructural with other lanthanide succinates of the same formula. The Dy(III) atom is nine-coordinated in a tricapped trigonal-prismatic environment by eight O atoms, derived from six carboxyl-ate groups and a water mol-ecule. One of the independent succinate anions is located about a crystallographic inversion center and the uncoordinated water mol-ecule lies on a twofold axis.
View Article and Find Full Text PDFActa Crystallogr Sect E Struct Rep Online
June 2011
In the title compound, [Mg(2)(C(7)H(10)O(4))(2)(H(2)O)(6)](n), the Mg(II) ion is coordinated by three aqua ligands and three O atoms from three heptanedioato ligands in a distorted octa-hedral geometry. Each heptanedioato ligand bridges three Mg atoms, generating polymeric layers parallel to the bc plane. The polymeric layers related by translation along the a axis inter-act further via O-H⋯O hydrogen bonds, which consolidate the crystal packing.
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