Results 71 to 80 of about 23,657 (193)

E84G mutation in dihydrofolate reductase from drug resistant strains of Mycobacterium tuberculosis (Mumbai, India) leads to increased interaction with Trimethoprim

International Journal of Mycobacteriology, 2015
Background: Dihydrofolate reductase (DHFR) (dfrA gene) is an essential enzyme for cell survival and an unexplored target in Mycobacterium tuberculosis (Mtb). This study was carried out to analyze mutations in the dfrA gene amongst 20 clinical DNA samples
Archana Raju, Savita Kulkarni, M K Ray, M G.R Rajan, Mariam S Degani   +4 more
doaj   +1 more source

Innovative Microneedle Patches for Psoriasis Treatment: A Dual Approach With Methotrexate‐Zinc and Difelikefalin for Enhanced Therapeutic Outcomes

Small, Volume 22, Issue 36, 26 June 2026.
This study presents a novel dual‐layer microneedle platform for psoriasis treatment, integrating rapid itch relief with sustained immunomodulatory and antibacterial effects. By combining difelikefalin and methotrexate‐zinc, this system effectively targets pruritus, epidermal hyperplasia, immune dysregulation, and infection, offering a promising ...
Xiaolong Xu, Chunhao Long, Yuze Zhou, Lujing Fei, Youyou Zhou, Min Qi   +5 more
wiley   +1 more source

Cloning and expression of ricin a- and b-subunits genes in fusion constructions with dihydrofolate reductase gene in escheriсhia coli.

Тонкие химические технологии, 2007
Recombinant chimeric constructions RTA-DHFR and RTВ-DHFR consisting of ricin Aand B-subunits genes (RTA and RTB) and dihydrofolate reductase (DHFR) gene were cloned and expressed in Escheriсhia coli.
M. А. Gracheva, Z. М. Galushkina, N. N. Poletaeva, L. V. Verhovskaya, V. G. Lunin, V. I. Shvets   +5 more
doaj  

Caesarean Scar Ectopic Pregnancy: A Case Study

Sonography, Volume 13, Issue 2, June 2026.
ABSTRACT Caesarean scar ectopic pregnancy (CSEP) occurs when a blastocyst implants into the residual scar from a previous caesarean section delivery, in the anterior lower uterine segment. In this region the endometrium is thin or absent, and may represent a dehiscence of the mucosal margin of the myometrium, with implantation into the myometrium ...
Tony Parmiter
wiley   +1 more source

Structural and Dynamics Perspectives on the Binding of Substrate and Inhibitors in Mycobacterium tuberculosis DHFR

Scientia Pharmaceutica, 2017
Dihydrofolate reductase (DHFR), an essential enzyme in the folate pathway, is a potential target for new anti-tuberculosis drugs. Fifteen crystal structures of Mycobacterium tuberculosis DHFR complexed with NADPH and various inhibitors are available in ...
Pimonluck Sittikornpaiboon, Pisanu Toochinda, Luckhana Lawtrakul   +2 more
doaj   +1 more source

Structural insights into urocanate reductase using room‐temperature X‐ray crystallography

Acta Crystallographica Section D, Volume 82, Issue 6, Page 603-614, June 2026.
The active‐site dynamics of the microbial enzyme urocanate reductase were revealed by room‐temperature X‐ray crystallography.Urocanate reductase (UrdA) is a bacterial enzyme that converts urocanic acid to imidazole propionate. Its catalytic residue Arg411 undergoes a large conformational change in the substrate‐bound versus product‐bound states.
Swati Aggarwal, Nitisha Gurav, Esko Oksanen, Karin Lindkvist-Petersson, Raminta Venskutonytė   +4 more
wiley   +1 more source

Antibacterial Potential of Ximenia americana L. Olacaceae: Molecular Docking, Molecular Dynamics, and ADMET Prediction

Journal of Pharmacy
Introduction:  The devastating effect of persistent and recurrent bacterial infections coupled with antibiotic resistance is a driving force for prospects into alternative antibacterial therapeutics to achieve treatment.
Mubarak Muhammad Dahiru, Abdulazeez Mumsiri Abaka, Ibrahim Ya'u   +2 more
doaj   +1 more source

PEGylated Chitosan Nanoparticles: Engineering Multifunctional Platforms for Targeted Cervical and Lung Cancer Treatment

Cancer Science, Volume 117, Issue 6, Page 1531-1542, June 2026.
Graphical representation of formation of self‐assembled PEGylated Chitosan Nanoparticles and their mechanism in tumor localization. ABSTRACT Polymer‐based nanocarriers have emerged as transformative platforms in cancer nanomedicine, enabling controlled and site‐specific delivery of therapeutic agents.
Prashant Kesharwani, Nazim Nasir, Shadma Wahab, Garima Gupta, Khang Wen Goh, Amirhossein Sahebkar   +5 more
wiley   +1 more source

Genetic Diversity of Dihydropteroate synthetase Gene (dhps) Of Plasmodium vivax in Hormozgan Province, Iran

Iranian Journal of Parasitology, 2016
Background: The present study was formulated in order to determine pol­ymorphism of dihydropteroate synthetase gene (dhps) of Plasmodium vivax (P. vivax) in Hormozgan Province, southern Iran and mutations at codons 382, 383, 512, 553, and 585 associated ...
Somayeh MAGHSOODLOORAD, Ali HAGHIGHI, Khojasteh SHARIFI SARASIABI, Niloofar TAGHIPOOR, Nahid HOSSEINZADEH, Latif GACHKAR, Ehsan NAZEMALHOSSEINI MOJARRAD, Elham MAGHSOODLOORAD   +7 more
doaj  

Intestinal Uptake of 6(R)-L-erythro-Tetrahydrobiopterin is Distinct from the Liver-Type MTX-Sensitive Accumulation Process

Pteridines, 2005
In order to increase the tissue level of tetrahydrobiopterin (BH4 ) , supplementation with 6R-tetrahydrobiopterin (6RBH4) has been widely employed. In this work, the profile of BH4 accumulation was compared between the liver and the small intestine after
Sawabe Keiko, Suetake Yasuko, Wakasugi Kazunori Osuke, Hasegawa Hiroyuki   +3 more
doaj   +1 more source