Results 101 to 110 of about 502,954 (343)

Assisted conception and Embryo Research with reference to the tenets of Catholic Christianity [PDF]

open access: yes, 2017
Religion has a considerable influence over the public’s attitudes towards science and technologies. The objective of the paper is to understand the ethical and religious problems concerning the use of embryo for research in assisting conception for ...
Mitra, Piyali
core  

Embryo donation families : a follow-up in middle childhood [PDF]

open access: yes, 2007
Couples who conceive using donated embryos rear a child to whom they are genetically unrelated. It has been suggested that this may have negative consequences for parenting and child development.
Keeley, Sarah, MacCallum, Fiona
core   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

open access: yesFEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa   +5 more
wiley   +1 more source

Outcome of twin pregnancies conceived after assisted reproductive techniques

open access: yesJournal of Human Reproductive Sciences, 2008
Context : There is a continuous controversy regarding the obstetric perinatal outcome of twin pregnancies conceived after assisted reproductive techniques (ART). There is an ongoing discussion whether theses parameters may show poorer results as compared
A Baxi, M Kaushal
doaj   +1 more source

Customizing Conception: A Survey of Preimplantation Genetic Diagnosis and the Resulting Social, Ethical, and Legal Dilemmas [PDF]

open access: yes, 2002
One in six American couples experience difficulties conceiving a child. With fertility rates at an all time low, the business of treating infertility is booming.
Roberts, Jason Christopher
core   +1 more source

Advanced sperm selection techniques for assisted reproduction [PDF]

open access: yesCochrane Database of Systematic Reviews, 2013
Assisted reproductive technologies (ART) including in vitro fertilisation (IVF) and intracytoplasmic sperm injection (ICSI), combine gametes to enhance the probability of fertilisation and pregnancy. Advanced sperm selection techniques are increasingly employed in ART, most commonly in cycles utilising ICSI.
Lepine, Sam   +5 more
openaire   +6 more sources

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

open access: yesFEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel   +13 more
wiley   +1 more source

Acupuncture for infertile women without undergoing assisted reproductive techniques (ART)

open access: yesMedicine, 2019
Supplemental Digital Content is available in the ...
Liu Yun   +5 more
semanticscholar   +1 more source

The neural crest‐associated gene ERRFI1 is involved in melanoma progression and resistance toward targeted therapy

open access: yesMolecular Oncology, EarlyView.
ERRFI1, a neural crest (NC)‐associated gene, was upregulated in melanoma and negatively correlated with the expression of melanocytic differentiation markers and the susceptibility of melanoma cells toward BRAF inhibitors (BRAFi). Knocking down ERRFI1 significantly increased the sensitivity of melanoma cells to BRAFi.
Nina Wang   +8 more
wiley   +1 more source

Sperm chromatin dispersion test before sperm preparation is predictive of clinical pregnancy in cases of unexplained infertility treated with intrauterine insemination and induction with clomiphene citrate [PDF]

open access: yes, 2016
Background/aims: A large proportion of men with normal sperm results as analyzed using conventional techniques have fragmented DNA in their spermatozoa.
De Croo, Ilse   +4 more
core   +2 more sources

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