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https://www.readbyqxmd.com/read/29341951/spermicidal-constituents-of-ethanolic-extract-of-sacoglottis-gabonensis-stem-bark
#1
Gideon O Alade, Jones O Moody, Olanrewaju R Awotona, Saburi A Adesanya, Daowan Lai, Peter Proksch
AIM: To isolate the spermicidal constituents of Sacoglottis gabonensis. MATERIALS AND METHODS: The ethanolic extract with partitioned fractions of Sacoglottis gabonensis stem bark were subjected to sperm immobilization assay. The most active EtOAc fraction was further purifi ed by column and Semi-Preparative High Performance Liquid Chromatography to give compounds which were characterized by spectroscopic methods (UV, LC/MS, and NMR). The compound(s) was also tested for sperm immobilization activity...
December 20, 2017: Folia Medica
https://www.readbyqxmd.com/read/29325972/antioxidant-activity-of-cape-caffeic-acid-phenethyl-ester-in-vitro-can-protect-human-sperm-deoxyribonucleic-acid-from-oxidative-damage
#2
Şule Ayla, Gülden Tunalı, Bülent E Bilgiç, Kenan Sofuoğlu, A Arman Özdemir, Gamze Tanrıverdi, Semra Özdemir, B Cem Soner, Bahar Öztürk, Serçin Karahüseyinoğlu, Esra Güler Aslan, Ismail Seçkin
PURPOSE: Sperm processing (e.g., centrifugation) used in preparation for assisted reproduction can result in excessive generation of reactive oxygen species (ROS) and potential sperm damage. The use of antioxidants during sperm processing has been shown to prevent iatrogenic sperm damage, including DNA damage. In this study, we evaluated the effect of caffeic acid phenethyl ester (CAPE) on oxidative stress mediated sperm dysfunction and DNA damage. METHODS: Semen samples were obtained to liquefy at room temperature...
January 8, 2018: Acta Histochemica
https://www.readbyqxmd.com/read/29316840/protective-effect-of-motiliperm-in-varicocele-induced-oxidative-injury-in-rat-testis-by-activating-phosphorylated-inositol-requiring-kinase-1%C3%AE-p-ire1%C3%AE-and-phosphorylated-c-jun-n-terminal-kinase-p-jnk-pathways
#3
Kiran Kumar Soni, Li Tao Zhang, Bo Ram Choi, Keshab Kumar Karna, Jae Hyung You, Yu Seob Shin, Sung Won Lee, Chul Young Kim, Chen Zhao, Han-Jung Chae, Hye Kyung Kim, Jong Kwan Park
CONTEXT: MOTILIPERM was prepared as a mixture of extracts of three medicinal herbs [roots of Morinda officinalis How (Rubiaceae), outer scales of Allium cepa L. (Liliaceae) and seeds of Cuscuta chinensis Lamark (Convolvulaceae)]. OBJECTIVE: To investigate the role of reactive oxygen species (ROS)-based endoplasmic reticulum (ER) stress in a rat model of varicocele and the therapeutic efficacy of MOTILIPERM in this model. MATERIALS AND METHODS: Sixty male rats were divided into five experimental groups: a normal control group (CTR + vehicle), a control group administered MOTILIPERM 200 mg/kg (CTR + M 200), a varicocele-induced control group (VC + vehicle) and two varicocele-induced groups administered MOTILIPERM 100 (VC + M 100) or 200 (VC + M 200) mg/kg for 4 weeks...
December 2018: Pharmaceutical Biology
https://www.readbyqxmd.com/read/29314770/calibration-of-redox-potential-in-sperm-wash-media-and-evaluation-of-oxidation-reduction-potential-values-in-various-assisted-reproductive-technology-culture-media-using-mioxsys-system
#4
M K Panner Selvam, R Henkel, R Sharma, A Agarwal
Oxidation-reduction potential describes the balance between the oxidants and antioxidants in fluids including semen. Various artificial culture media are used in andrology and IVF laboratories for sperm preparation and to support the development of fertilized oocytes under in vitro conditions. The composition and conditions of these media are vital for optimal functioning of the gametes. Currently, there are no data on the status of redox potential of sperm processing and assisted reproduction media. The purpose of this study was to compare the oxidation-reduction potential values of the different media and to calibrate the oxidation-reduction potential values of the sperm wash medium using oxidative stress inducer cumene hydroperoxide and antioxidant ascorbic acid...
January 3, 2018: Andrology
https://www.readbyqxmd.com/read/29295903/intracytoplasmic-sperm-injection-in-mice
#5
Monika A Ward, Ryuzo Yanagimachi
Intracytoplasmic sperm injection (ICSI) is the injection of a single spermatozoon directly into the cytoplasm of an oocyte using an injection pipette. Spermatozoa that are used for ICSI do not need to be motile or alive. Indeed, for mouse ICSI, the sperm tail is typically broken off before injection into the oocyte, resulting essentially in a nuclear transfer. The protocol describes creation of the injection pipettes, preparation of oocytes and spermatozoa, and steps of the ICSI procedure. The technique can be used to create both hybrid and inbred mice, as well as transgenic animals...
January 2, 2018: Cold Spring Harbor Protocols
https://www.readbyqxmd.com/read/29287262/dna-binding-of-sunitinib-spectroscopic-evidence-via-circular-dichroism-and-nuclear-magnetic-resonance
#6
Eszter Kiss, Arash Mirzahosseini, Ágnes Hubert, Attila Ambrus, László Őrfi, Péter Horváth
Sunitinib is a non-selective tyrosine kinase inhibitor, but in its chemical structure there can be discovered certain features, which suggest the ability to bind to DNA. These elements are the planar aromatic system and the tertiary amine function, which is protonated at the pH of the organism. In this study, the binding of the drug sunitinib to DNA was investigated using circular dichroism (CD), 1H NMR and UV spectroscopies, along with CD melting. For these studies DNA was isolated from calf thymus (CT), salmon fish sperm (SS), and chicken erythrocyte (CE), however for our purposes an artificially constructed and highly purified plasmid DNA (pUC18) preparation proved to be the most suitable...
December 16, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/29277349/diabetes-mellitus-induction-effect-of-different-streptozotocin-doses-on-male-reproductive-parameters
#7
Temidayo S Omolaoye, Bongekile T Skosana, Stefan S du Plessis
Diabetes mellitus (DM) is reported to be involved in male reproductive impairment, and its impact is evident in the increased prevalence of infertility. Various studies have reported that a single parenteral injection of <40 mg/kg Streptozotocin (STZ) is ineffective in ablating pancreatic β-cells and creating a rat model to investigate the effect of DM on the male reproductive system. This study therefore aims to validate these claims. Adult male Wistar rats received either a single intraperitoneal injection of STZ (30 mg/kg or 60 mg/kg) or saline (0...
December 22, 2017: Acta Histochemica
https://www.readbyqxmd.com/read/29258709/partial-deoxygenation-of-extender-improves-sperm-quality-reduces-lipid-peroxidation-and-reactive-oxygen-species-during-cryopreservation-of-buffalo-bubalus-bubalis-semen
#8
B Balamurugan, S K Ghosh, S A Lone, J K Prasad, G K Das, R Katiyar, Abdul Rahman Mustapha, Ajay Kumar, M R Verma
The present study was designed to investigate the effect of partial deoxygenation of extender on sperm quality, lipid peroxidation (LPO) and reactive oxygen species (ROS) in buffalo (Bubalus bubalis) during cryopreservation of semen. Semen extender was prepared freshly and split into three sub-extenders [Extender I: control (non-deoxygenated), Extender II (partially deoxygenated by using LN2 flushing) and Extender III (partially deoxygenated mechanically by vacuum pump)]. Amounts of dissolved oxygen (DO) were determined in all the three extenders and also in post-thaw semen...
December 16, 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/29247471/hypothesis-does-exposure-to-sperm-lead-to-pregnancy
#9
David H Barad
This issue of BJOG includes a manuscript by G. Saccone et al (BJOG) examining if exposure to semen is associated with the clinical outcome of pregnancy, in IVF cycles. While it seems obvious that exposure to semen with sperm should increase the chance of pregnancy in a woman who has recently undergone induction of ovulation, some of these studies used only seminal plasma or were performed in cycles with ovulation suppression in preparation for transfer of cryopreserved embryos. This article is protected by copyright...
December 16, 2017: BJOG: An International Journal of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/29239046/sperm-preparation-through-sephadex%C3%A2-filtration-improves-in-vitro-fertilization-rate-of-buffalo-oocytes
#10
A U Husna, A Azam, S Qadeer, M A Awan, S Nasreen, Q Shahzad, A Fouladi-Nashta, M Khalid, S Akhter
Routinely, swim-up method is used to separate high-quality sperm; however, long processing time and close cell-to-cell contact during the centrifugation step are inevitable elements of oxidative stress to sperm. The objective was to evaluate Sephadex™ and glass wool filtration to separate motile, intact and viable sperm for in vitro fertilization in buffalo. The cumulus-oocyte complexes (COCs) were collected from ovaries of slaughtered buffaloes by aspiration and matured for 24 hr in CO2 incubator at 38...
December 14, 2017: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/29238921/bacillus-probiotic-supplementations-improve-laying-performance-egg-quality-hatching-of-laying-hens-and-sperm-quality-of-roosters
#11
Maria S Mazanko, Ivan F Gorlov, Evgeniya V Prazdnova, Maxim S Makarenko, Alexander V Usatov, Anzhelika B Bren, Vladimir A Chistyakov, Alexey V Tutelyan, Zoya B Komarova, Natalia I Mosolova, Denis N Pilipenko, Olga E Krotova, Aleksandr N Struk, Angela Lin, Michael L Chikindas
The study aims at elucidating the effect of bacilli probiotic preparations on the physiology of laying hens and roosters. Probiotic formulations were prepared as soybean products fermented by Bacillus subtilis KATMIRA1933 and Bacillus amyloliquefaciens B-1895. In this study, groups of male and female chickens were used. These groups received a probiotic preparation based on either B. subtilis KATMIRA1933 or B. amyloliquefaciens B-1895, or of a mixture of strains, from the first day to the age of 39 weeks. These preparations positively affected egg production, quality of sperm production, and quality and hatchery of eggs...
December 13, 2017: Probiotics and Antimicrobial Proteins
https://www.readbyqxmd.com/read/29237004/surrogacy-families-headed-by-gay-men-relationships-with-surrogates-and-egg-donors-fathers-decisions-over-disclosure-and-children-s-views-on-their-surrogacy-origins
#12
Nicola Carone, Roberto Baiocco, Demetria Manzi, Chiara Antoniucci, Victoria Caricato, Eugenio Pagliarulo, Vittorio Lingiardi
STUDY QUESTION: How do gay father families experience surrogacy in terms of their relationships with surrogates and egg donors, fathers' disclosure decisions and children's views on their surrogacy origins? SUMMARY ANSWER: More families had a relationship with the surrogate than the egg donor, and almost all had started to disclose to their children, the majority of whom expressed limited interest in their surrogacy conception. WHAT IS KNOWN ALREADY: Gay fathers tend to report greater contact with the surrogate than the egg donor and to disclose only the use of a surrogate (omitting discussion of the egg donor and the respective fathers' genetic relatedness)...
December 11, 2017: Human Reproduction
https://www.readbyqxmd.com/read/29229959/insulin-like-peptide-3-expressed-in-the-silkworm-possesses-intrinsic-disulfide-bonds-and-full-biological-activity
#13
Takatsugu Miyazaki, Masaaki Ishizaki, Hideo Dohra, Sungjo Park, Andre Terzic, Tatsuya Kato, Tetsuya Kohsaka, Enoch Y Park
Insulin-like peptide 3 (INSL3) is a member of the relaxin/insulin superfamily and is expressed in testicular Leydig cells. Essential for fetal testis descent, INSL3 has been implicated in testicular and sperm function in adult males via interaction with relaxin/insulin-like family peptide receptor 2 (RXFP2). The INSL3 is typically prepared using chemical synthesis or overexpression in Escherichia coli followed by oxidative refolding and proteolysis. Here, we expressed and purified full-length porcine INSL3 (pINSL3) using a silkworm-based Bombyx mori nucleopolyhedrovirus bacmid expression system...
December 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29214348/effect-of-laser-assisted-zona-thinning-during-assisted-reproduction-on-pregnancy-outcome-in-women-with-endometriosis-randomized-controlled-trial
#14
Adel Mohamed Nada, Amr El-Noury, Hesham Al-Inany, Mamdouh Bibars, Tamer Taha, Sameh Salama, Fatma Hassan, Eman Zein
OBJECTIVE: To compare the ICSI-ET outcomes in patients with endometriosis with or without laser-assisted zona pellucida thinning. DESIGN: Randomized controlled trial. SETTING: The study was conducted in the Obstetrics & Gynecology Department, Cairo University hospital, and two private IVF centers in Cairo & Beni-Suif from July 2015 to January 2017 upon infertile and known endometriosis patients who planned to do ICSI-ET. INTERVENTIONS: Before randomization, all patients received the same ovarian stimulation preparation, oocyte retrieval procedures, and the same intracytoplasmic sperm injection procedures...
December 6, 2017: Archives of Gynecology and Obstetrics
https://www.readbyqxmd.com/read/29179435/genome-wide-5-hydroxymethylcytosine-patterns-in-human-spermatogenesis-are-associated-with-semen-quality
#15
Olga A Efimova, Anna A Pendina, Andrei V Tikhonov, Sergey E Parfenyev, Irina D Mekina, Evgeniia M Komarova, Mariia A Mazilina, Eugene V Daev, Olga G Chiryaeva, Ilona A Galembo, Mikhail I Krapivin, Oleg S Glotov, Irina S Stepanova, Svetlana A Shlykova, Igor Yu Kogan, Alexander M Gzgzyan, Tatyana V Kuznetzova, Vladislav S Baranov
We performed immunofluorescent analysis of DNA hydroxymethylation and methylation in human testicular spermatogenic cells from azoospermic patients and ejaculated spermatozoa from sperm donors and patients from infertile couples. In contrast to methylation which was present throughout spermatogenesis, hydroxymethylation was either high or almost undetectable in both spermatogenic cells and ejaculated spermatozoa. On testicular cytogenetic preparations, 5-hydroxymethylcytosine was undetectable in mitotic and meiotic chromosomes, and was present exclusively in interphase spermatogonia Ad and in a minor spermatid population...
October 24, 2017: Oncotarget
https://www.readbyqxmd.com/read/29165686/optimal-timing-for-blastomere-biopsy-of-8-cell-embryos-for-preimplantation-genetic-diagnosis
#16
Y Kalma, L Bar-El, S Asaf-Tisser, M Malcov, A Reches, J Hasson, H Amir, F Azem, D Ben-Yosef
STUDY QUESTION: What is the optimal timing for blastomere biopsy during the 8-cell stage, at which embryos will have the best implantation potential? SUMMARY ANSWER: Fast-cleaving embryos that are biopsied during the last quarter (Q4) of the 8-cell stage and are less affected by the biopsy procedure, and their implantation potential is better than that of embryos biopsied earlier during the 8-cell stage (Q1-Q3). WHAT IS KNOWN ALREADY: Blastomer biopsy from cleavage-stage embryos is usually performed on the morning of Day 3 when the embryos are at the 6- to 8-cell stage and is still the preferred biopsy method for preimplantation genetic diagnosis (PGD) for monogentic disorders or chromosomal translocations...
November 20, 2017: Human Reproduction
https://www.readbyqxmd.com/read/29157008/a-comparative-evaluation-of-migration-sedimentation-method-for-sperm-preparation
#17
Sevil Kiratli, Mehmet Yuncu, Kenan Kose, Sinan Ozkavukcu
The effectiveness of semen preparation using the migration-sedimentation (MS) method was evaluated, and compared to density gradient centrifuge and swim-up combination (DGC+SU). Sperm selection using MS is based on motility, thus, deleterious effects for which centrifugation has been blamed, are believed to be avoided. Normozoospermic male patients who had more than 10% forward progressive motile sperm in their ejaculate were included in the study. Spermatozoa selected by two different methods were investigated and compared according to sperm motility, concentration, morphology, vitality, DNA fragmentation, and presence of persistent histones...
November 20, 2017: Systems Biology in Reproductive Medicine
https://www.readbyqxmd.com/read/29136144/antioxidants-improve-ivf-outcome-and-subsequent-embryo-development-in-the-mouse
#18
T Truong, D K Gardner
STUDY QUESTION: What is the effect of a combination of three antioxidants (Acetyl-L-Carnitine, N-Acetyl-L-Cysteine and α-Lipoic Acid), present in IVF medium during mouse oocyte and sperm collection, on fertilization and subsequent IVF embryo development? SUMMARY ANSWER: A combination of antioxidants resulted in faster developmental times from the 2-cell stage through to expanded blastocyst stage, accompanied by a significant increase in blastocyst cell number and a reduction of intracellular hydrogen peroxide (H2O2) levels...
December 1, 2017: Human Reproduction
https://www.readbyqxmd.com/read/29110260/disparities-in-reproductive-outcomes-according-to-the-endometrial-preparation-protocol-in-frozen-embryo-transfer-the-risk-of-early-pregnancy-loss-in-frozen-embryo-transfer-cycles
#19
I Hatoum, L Bellon, N Swierkowski, M Ouazana, S Bouba, K Fathallah, B Paillusson, M Bailly, F Boitrelle, L Alter, M Bergère, J Selva, R Wainer
PURPOSE: The purpose of this study was to determine the effect of stimulated and artificial endometrial preparation protocols on reproductive outcomes in frozen embryo transfer (FET) cycles. METHODS: We performed a retrospective study of 1926 FET cycles over a 3.5-year period in the Fertility Unit at a University Hospital. Stimulated and artificial protocols were used for endometrial preparation. The embryos for FET were obtained from either in vitro fertilization or intracytoplasmic sperm injection cycles...
November 6, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/29108863/alterations-in-sperm-dna-methylation-patterns-of-oligospermic-males
#20
Mohammed Laqqan, Sascha Tierling, Yaser Alkhaled, Christina LoPorto, Mohamad Eid Hammadeh
Aberrant in sperm DNA methylation patterns and histone modification play a role in male fecundity decline. This study was prepared to determine whether sperm DNA methylation at CpG dinucleotides is different in oligospermic males compared to proven fertile males and then to evaluate the correlation between the changes in sperm DNA methylation patterns and semen parameters of oligospermic males. A total of 165 males (64 proven fertile males "controls" and 101 oligospermic males "cases") were included in the study...
December 2017: Reproductive Biology
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