Publications by authors named "Zheng-Zhi Zhang"

Digital flexor tendon repair poses a significant challenge for hand surgeons. Currently, extrasynovial tendon grafts are frequently used in clinical settings to bridge flexor tendon defects. However, the healing process is always accompanied by postoperative adhesion.

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Article Synopsis
  • The CRY gene family in plants encodes photoreceptors that help regulate their growth in response to blue light, with this study focusing on hexaploid wheat.
  • Researchers identified and characterized several CRY gene homologs (CRY1a, CRY1b, and CRY2) using PCR techniques and traced their lineage back to wheat's ancestral species.
  • They confirmed that certain CRY genes are single copy and located on specific chromosomes, while a phylogenetic analysis revealed that the diversification of the CRY gene subfamily predates the split between monocots and dicots.
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Two silver(I) N-heterocyclic carbene-bridged calix[4]arene analogues 4 and 5 were synthesized by a fragment-coupling approach; the preliminary inclusion properties of 5 with [60]fullerene shows that it is a novel efficient [60]fullerene fluorescent sensor.

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Two novel extended calix[4]arene analogues by two P-Cu(I)-P bridges have been synthesized. The molecular structures and anion encapsulation ability for ClO4- and BF4- have been studied by X-ray analysis.

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The reaction of 9-{[N-n-propyl-N-(diphenylphosphino)amino]methyl}anthracene (1) with Au(SMe2)Cl yields complex 2 with an arm-opening configuration. The latter is treated with AgClO4 to form complex 4 and then respectively reacted with acetonitrile, pyridine, and triphenylphosphine sulfide to afford novel gold(I) eta2-arene complexes 3a-c, which have arm-closing configurations and feeble or weak fluorescence emissions. The observation can be attributed to charge transfer from the anthracene unit to the Au+ ion.

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The dominant male sterility gene Ms2 in wheat has been widely used in recurrent selection and variety improvement. Identification of genes associated with the male sterility in Ms2-carrying wheat will help us understand how Ms2 functions. Using a pair of isogenic lines of Ms2, subtractive hybridization was conducted with cDNA from bulked spikelets at meiophase of sterile plants as the tester and cDNA from the same tissues of fertile plants as the driver.

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The cDNA encoding TOM7 (translocase of outer mitochondrial membrane subunit 7) like protein in wheat was cloned through RT-PCR, and its genomic DNA fragment was subsequently cloned. This gene was tentatively designated as TaTOM7. It has no intron in the coding region and its product possesses one hydrophobic trans-membrane domain in the middle, and one hydrophilic domain in the N-terminal and C-terminal domain, respectively.

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Objective: To build three-dimensional (3-D) visible model for surgical treatment of infection of fascial spaces of hand.

Methods: Serial thin cross-sections (0.2 mm) of hand were made by cryomicrotome, and the thin cross-sections of metacarpal parts were observed.

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Two novel tweezer-like 25,27-dihydroxy-26,28-bis(phenylthiaethoxy)calix[4]arenes 6 and 7 were synthesized by the reaction of 25,27-dihydroxy-26,28-bis(bromoethoxy)calix[4]arenes 3 and 4 for the evaluation of their ion-selectivity in ion-selective electrodes (ISEs). X-ray structural analysis indicated that calix[4]arene 7 is in an interesting infinite linear aggregate via self-inclusion. For investigation of the influences of substitutes on the behavior of the ISEs, the halogen substituted aryl analogues of 25,27-dihydroxy-26,28-bis(arylthiaethoxy)calix[4]arenes 8-12 were also synthesized and their ISE performances were evaluated under the same conditions.

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The P,N,P-tridentate ligand 2,6-bis(diphenylphosphino)pyridine, L, was employed to generate a twelve-membered metallomacrocyclic host species cis-Pt(2)Me(4)(mu-L)(2) that encapsulates Tl(I) and Cu(I) guest ions. The ligand was also used to synthesize another two linear heterotrinuclear complexes, [Me(2)Pt(mu-L)(2)Ag(2)(MeCN)(2)](BF(4))(2).MeCN and [(CO)(3)Fe(mu-L)(2)Ag(2)(Et(2)O)](ClO(4))(2), both containing a metal-metal dative bond (Pt-->Ag and Fe-->Ag, respectively) and stabilized by the d(10)-d(10) argentophilic interaction.

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