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https://www.readbyqxmd.com/read/28088090/degradation-in-forensic-trace-dna-samples-explored-by-massively-parallel-sequencing
#1
Eirik Nataas Hanssen, Robert Lyle, Thore Egeland, Peter Gill
Routine forensic analysis using STRs will fail if the DNA is too degraded. The DNA degradation process in biological stain material is not well understood. In this study we sequenced old semen and blood stains by massively parallel sequencing. The sequence data coverage was used to measure degradation across the genome. The results supported the contention that degradation is uniform across the genome, showing no evidence of regions with increased or decreased resistance towards degradation. Thus the lack of genetic regions robust to degradation removes the possibility of using such regions to further optimize analysis performance for degraded DNA...
January 3, 2017: Forensic Science International. Genetics
https://www.readbyqxmd.com/read/28087298/the-utility-of-sex-hormone-binding-globulin-in-hypogonadism-and-infertile-males
#2
Joshua Ring, Charles Welliver, Mike Parenteau, Stephen Markwell, Robert E Brannigan, Tobias S Köhler
PURPOSE: We sought to determine what role SHBG played with male infertility patients. METHODS: Retrospective review of 168 males seen in a fertility clinic from 2012-2014, to investigate the accuracy of TT in the biochemical diagnosis of hypogonadism using cBT as the reference value. We used a multivariable analysis to assess SHBG as an independent predictor of infertility. RESULTS: Computations using cBT as a standard in the measurement of definitive biochemical hypogonadism (<156 ng/dL) revealed a sensitivity, specificity, PPV, and NPV respectively of 81%, 83%, 81%, and 82% in diagnosing hypogonadism with TT alone...
January 10, 2017: Journal of Urology
https://www.readbyqxmd.com/read/28086915/comparative-study-in-infertile-couples-with-and-without-chlamydia-trachomatis-genital-infection
#3
Yuanchang Zhu, Biao Yin, Tonghua Wu, Lijun Ye, Chunmei Chen, Yong Zeng, Yaou Zhang
BACKGROUND: Chlamydia, caused by the bacterium Chlamydia trachomatis(C. trachomatis), is the most common sexually transmitted disease. The incidence is not clear due to the asymptomatic nature of early stage of infections. The incidence of Chlamydia has not been fully investigated in the Chinese Han population. Since chronic infection with can C. trachomatis can lead to infertility in males and females, it is important to determine the impact of infection on clinical outcomes. The aim of this study is to explore the epidemiology of C...
January 13, 2017: Reproductive Health
https://www.readbyqxmd.com/read/28078817/birth-of-puppies-of-predetermined-sex-after-artificial-insemination-with-a-low-number-of-sex-sorted-frozen-thawed-spermatozoa-in-field-conditions
#4
Yun-Fang Wei, Fang-Liang Chen, Shu-Sheng Tang, Ai-Guo Mao, Li-Guang Li, Lu-Guang Cheng, Chao Chen, Fei-Xiang Li, Bin Wang, Tao Xu, Yue-Jun Zhang, Jing Li, Jiu-Sheng Wan
The aim of this study was to evaluate fertility and sex ratios after artificial insemination in dogs under field conditions. Semen was cryopreserved as unsorted (control) or was separated into X- and Y-chromosome-bearing sperm using a cell sorter. Sixty female dogs were inseminated with frozen-thawed spermatozoa of 100 × 10(6) unsorted (a dose in practice) and 4 × 10(6) sorted (X and Y group, respectively). A total of 20 dogs became pregnant and 126 puppies were born from the three groups. The percentage of parturition was similar for the X (5/20; 25...
January 11, 2017: Animal Science Journal, Nihon Chikusan Gakkaihō
https://www.readbyqxmd.com/read/28078721/use-of-the-fluorescent-dye-tetramethylrhodamine-methyl-ester-perchlorate-for-mitochondrial-membrane-potential-assessment-in-human-spermatozoa
#5
P Uribe, J V Villegas, R Boguen, F Treulen, R Sánchez, P Mallmann, V Isachenko, G Rahimi, E Isachenko
Mitochondrial membrane potential (ΔΨm) is an indicator of sperm quality and its evaluation complements the standard semen analysis. The fluorescent dye JC-1 has been widely used to assess sperm ΔΨm; however, some problems have been detected under certain experimental conditions. Another fluorescent compound, tetramethylrhodamine methyl ester perchlorate (TMRM), has been used in somatic cells and bovine spermatozoa but not in human spermatozoa. TMRM accumulates in hyperpolarised mitochondria and the fluorescence intensity of this compound correlates with ΔΨm...
January 11, 2017: Andrologia
https://www.readbyqxmd.com/read/28078226/clinical-utility-of-sperm-dna-fragmentation-testing-practice-recommendations-based-on-clinical-scenarios
#6
REVIEW
Ashok Agarwal, Ahmad Majzoub, Sandro C Esteves, Edmund Ko, Ranjith Ramasamy, Armand Zini
Sperm DNA fragmentation (SDF) has been generally acknowledged as a valuable tool for male fertility evaluation. While its detrimental implications on sperm function were extensively investigated, little is known about the actual indications for performing SDF analysis. This review delivers practice based recommendations on commonly encountered scenarios in the clinic. An illustrative description of the different SDF measurement techniques is presented. SDF testing is recommended in patients with clinical varicocele and borderline to normal semen parameters as it can better select varicocelectomy candidates...
December 2016: Translational Andrology and Urology
https://www.readbyqxmd.com/read/28077271/occupational-exposure-to-pesticides-reproductive-hormone-levels-and-sperm-quality-in-young-brazilian-men
#7
Cleber Cremonese, Camila Piccoli, Fabio Pasqualotto, Ruth Clapauch, Rosalina Jorge Koifman, Sergio Koifman, Carmen Freire
The association of occupational exposure to current-use pesticides with reproductive hormones, semen quality, and genital measures was investigated among young men in the South of Brazil. A cross-sectional study was conducted in 99 rural and 36 urban men aged 18-23 years. Information on pesticide use was obtained through questionnaire. Serum and semen samples were analyzed for sex hormones and sperm parameters, respectively, and measurement of anogenital distance (AGD) and testis volume (TV) were performed...
January 7, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/28076980/status-of-sperm-born-oocyte-activating-factors-pawp-plc%C3%AE-and-sperm-chromatin-in-uncapacitated-capacitated-and-acrosome-reacted-conditions
#8
Marziyeh Tavalaee, Kazem Parivar, Abdol-Hossein Shahverdi, Kamran Ghaedi, Mohammad Hossein Nasr-Esfahani
The aim of this study was to investigate the value of sperm factors PAWP and PLCζ involved in oocyte activation and sperm chromatin status, as indicators of sperm quality during uncapacitated, capacitated and acrosome-reacted conditions. Semen samples collected from 10 normozoospermic men and sperm factors PAWP, PLCζ, protamine deficiency and DNA fragmentation evaluated in fresh samples, processed sample by DGC (density gradient centrifugation), capacitated and acrosome reacted sperm, using immunofluorescence and flow cytometry...
January 12, 2017: Human Fertility: Journal of the British Fertility Society
https://www.readbyqxmd.com/read/28073497/development-of-a-quantitative-pcr-method-to-explore-the-historical-occurrence-of-a-nuisance-microalga-under-expansion
#9
Karin S L Johansson, Katharina Lührig, Jonatan Klaminder, Karin Rengefors
A number of marine and freshwater harmful algal bloom (HAB) species have colonized new areas and expanded their habitat range in recent years. Nevertheless it is notoriously difficult to establish when colonization first occurred, what the dispersal routes are, and to separate recent invasion from increases in existent but small populations. The freshwater raphidophyte Gonyostomum semen is a nuisance species that has expanded its habitat range and increased in abundance in northern Europe during the past decades...
June 2016: Harmful Algae
https://www.readbyqxmd.com/read/28073193/analysis-of-myo-inositol-effect-on-spermatozoa-motility-in-hyper-viscous-ejaculates-and-in-patients-with-grades-ii-and-iii-varicocele
#10
Filomena Scarselli, Anna Maria Lobascio, Mario Terribile, Valentina Casciani, Pierfrancesco Greco, Giorgio Franco, Maria Giulia Minasi, Ermanno Greco
The goal of this study is to evaluate MYOInositol effects on spermatozoa motility, in patients' ejaculates with severe varicocele or hyper viscosity. The study included normal viscosity ejaculate from 30 patients affected by varicocele and hyper viscosity ejaculate from 33 patients without any testicular pathologies. All selected samples showed sperm concentration > 2 million/ml and progressive motility < 32%. In both groups, the pellet obtained after centrifugation in buffered medium, was divided in two aliquots, both incubated for 15 minutes at 37°C: one with MYO-Inositol and the other one, as control, only in phosphate buffered saline (PBS)...
December 30, 2016: Archivio Italiano di Urologia, Andrologia
https://www.readbyqxmd.com/read/28070710/the-accumulation-of-vitrified-oocytes-is-a-strategy-to-increase-the-number-of-euploid-available-blastocysts-for-transfer-after-preimplantation-genetic-testing
#11
Sandrine Chamayou, Maria Sicali, Carmelita Alecci, Carmen Ragolia, Annalisa Liprino, Daniela Nibali, Giorgia Storaci, Antonietta Cardea, Antonino Guglielmino
PURPOSE: In a preimplantation genetic diagnosis for aneuploidy (PGD-A) program, the more embryos available for biopsy, consequently increases the chances of obtaining euploid embryos to transfer. The aim was to increase the number of viable euploid blastocysts in patients undergoing PGD-A using fresh oocytes together with previously accumulated vitrified oocytes. METHODS: Sixty-nine patients with normal ovarian reserve underwent PGD-A for repeated implantation failure or recurrent pregnancy loss indication...
January 9, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/28070708/delayed-treatment-of-undescended-testes-may-promote-hypogonadism-and-infertility
#12
Julia Rohayem, Alessandra Luberto, Eberhard Nieschlag, Michael Zitzmann, Sabine Kliesch
CONTEXT: Undescended testes at birth may be caused by testosterone deficiency during fetal development. It is unclear whether the process of failed descent contributes to permanent endocrine impairment. OBJECTIVES: To evaluate the impact of age at treatment of undescended testes on endocrine and spermatogenic testicular function in middle-aged men. PATIENTS AND METHODS: Reproductive hormone and semen data of 357 men with previously undescended testes were evaluated with respect to age at correction of testicular position and compared to those of 709 controls with eutopic testes at birth and normozoospermia...
January 9, 2017: Endocrine
https://www.readbyqxmd.com/read/28069184/sperm-aneuploidy-after-testicular-cancer-treatment-data-from-a-prospective-multicenter-study-performed-within-the-french-centre-d-%C3%A3-tude-et-de-conservation-des-oeufs-et-du-sperme-network
#13
Nathalie Rives, Marie Walschaerts, Véronique Setif, Sylvianne Hennebicq, Jacqueline Saias, Florence Brugnon, Jacques Auger, Isabelle Berthaut, Ethel Szerman, Myriam Daudin, Louis Bujan
OBJECTIVE: To study sperm aneuploidy in a population of testicular cancer (TC) patients treated with the use of either bleomycin-etoposide-cisplatin (BEP) chemotherapy or radiotherapy. DESIGN: Multicenter prospective longitudinal study of TC patients analyzed before treatment and after 3, 6, 12, and 24 months (T3-T24). PATIENT(S): Fifty-four TC patients and a control group of 10 fertile sperm donors. SETTING: University hospital laboratories...
January 6, 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28069178/outcomes-of-anastrozole-in-oligozoospermic-hypoandrogenic-subfertile-men
#14
Ohad Shoshany, Nikita Abhyankar, Naem Mufarreh, Garvey Daniel, Craig Niederberger
OBJECTIVE: To determine whether the change in sperm parameters in subfertile hypoandrogenic men treated with anastrozole is correlated to the magnitude of increase in testosterone (T) to estrogen ratio in men responding to treatment. DESIGN: Retrospective study. SETTING: Male fertility clinic. PATIENT(S): The study group consisted of 86 subfertile hypoandrogenic men with low T/estradiol (E2) ratio (n = 78) or a prior aversive reaction to clomiphene citrate (n = 8)...
January 6, 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28069174/management-and-counseling-of-the-male-with-advanced-paternal-age
#15
REVIEW
Michael O Jennings, Ryan C Owen, David Keefe, Edward D Kim
Increasing percentages of children are being born to older fathers. This has resulted in concerns about the potential adverse effects of advanced paternal age. To help clinicians counsel couples, a systemic review was performed to attempt to address questions that these couples may ask: Should routine sperm testing be performed in older males? Should preimplantation genetic diagnosis (PGD) be performed? How do providers counsel patients about risk? Should young males freeze sperm if they plan to delay paternity? Using the terms "advanced paternal age", "semen testing", "preimplantation genetic diagnosis/screening", and "cryopreservation", a comprehensive search was performed in PubMed and the Cochrane Library, and numerous international societal guidelines were reviewed...
January 6, 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28068904/long-term-kinetics-of-zika-virus-rna-and-antibodies-in-body-fluids-of-a-vasectomized-traveller-returning-from-martinique-a-case-report
#16
Guenter Froeschl, Kristina Huber, Frank von Sonnenburg, Hans-Dieter Nothdurft, Gisela Bretzel, Michael Hoelscher, Lothar Zoeller, Matthias Trottmann, Francisco Pan-Montojo, Gerhard Dobler, Silke Woelfel
BACKGROUND: The magnitude of the current Zika virus (ZIKV) epidemic has led to a declaration of a Public Health Emergency of International Concern by the WHO. Findings of viable viral particles in semen for several weeks are corroborating reports of sexual transmission of ZIKV. Serious consequences of a positive diagnostic result particularly in the pregnant patient are calling for precise diagnostic tools also at later time points after infection. Currently, recommendations suggest a diagnostic period of direct viral detection of 5 to 7 days after onset of symptoms in serum or plasma, and up to 3 weeks in urine samples...
January 10, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28068399/effect-of-calf-gender-on-milk-yield-and-fatty-acid-content-in-holstein-dairy-cows
#17
Amy V Gillespie, James L Ehrlich, Dai H Grove-White
The scale of sexed semen use to avoid the birth of unwanted bull calves in the UK dairy industry depends on several economic factors. It has been suggested in other studies that calf gender may affect milk yield in Holsteins- something that would affect the economics of sexed semen use. The present study used a large milk recording data set to evaluate the effect of calf gender (both calf born and calf in utero) on both milk yield and saturated fat content. Linear regression was used to model data for first lactation and second lactation separately...
2017: PloS One
https://www.readbyqxmd.com/read/28068003/brucella-abortus-is-prevalent-in-both-humans-and-animals-in-bangladesh
#18
A K M A Rahman, C Saegerman, D Berkvens, F Melzer, H Neubauer, D Fretin, E Abatih, N Dhand, M P Ward
To determine the role of different Brucella (B.) spp. in Bangladesh, 62 animal samples and 500 human sera were tested. Animal samples from cattle, goats and sheep (including milk, bull semen, vaginal swabs and placentas) were cultured for Brucella spp. Three test-positive human sera and all animal samples were screened by Brucella genus-specific real-time PCR (RT-PCR), and positive samples were then tested by IS711 RT-PCR to detect B. abortus and B. melitensis DNA. Only B. abortus DNA was amplified from 13 human and six animal samples...
January 9, 2017: Zoonoses and Public Health
https://www.readbyqxmd.com/read/28067604/central-hypogonadism-due-to-a-giant-silent-fsh-secreting-atypical-pituitary-adenoma-effects-of-adenoma-dissection-and-short-term-leydig-cell-stimulation-by-luteinizing-hormone-lh-and-human-chorionic-gonadotropin-hcg
#19
Daniele Santi, Giorgia Spaggiari, Livio Casarini, Flaminia Fanelli, Marco Mezzullo, Uberto Pagotto, Antonio R M Granata, Cesare Carani, Manuela Simoni
We present a case report of an atypical giant pituitary adenoma secreting follicle-stimulating hormone (FSH). A 55-year-old patient presented for erectile dysfunction, loss of libido and fatigue. The biochemical evaluation showed very high FSH serum levels in the presence of central hypogonadism. Neither testicular enlargement nor increased sperm count was observed, thus a secretion of FSH with reduced biological activity was supposed. The histological examination after neuro-surgery showed an atypical pituitary adenoma with FSH-positive cells...
January 9, 2017: Aging Male: the Official Journal of the International Society for the Study of the Aging Male
https://www.readbyqxmd.com/read/28066955/dose-rates-of-antimicrobial-substances-in-boar-semen-preservation-time-to-establish-new-protocols
#20
M Schulze, M Grobbel, A Riesenbeck, S Brüning, J Schaefer, M Jung, R Grossfeld
To achieve a standardized number of spermatozoa in the final AI dose, varying amounts of extender fluid with a fixed concentration of antimicrobial substances are currently added to boar ejaculates. This practice ignores the different degrees of dilution of the antimicrobials in the end product. In calculating the final concentration of gentamicin in AI doses from 27,538 processed boar ejaculates, we demonstrated varying gentamicin concentrations in the resultant extended boar semen samples. The median concentration was 220...
January 9, 2017: Reproduction in Domestic Animals, Zuchthygiene
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