Search Results
Results 501 - 550 of 709
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Hinrichs K - - 1999
A nonovulating, hormone-treated mare was used successfully as an oocyte recipient. The mare's ovarian activity was suppressed using progesterone and estrogen treatment. This treatment was stopped, then estrogen was administered for 3 d prior to the transfer. An oocyte was recovered from the follicle of a donor mare and was ...
Keen J E - - 1999
OBJECTIVE: To evaluate the breeding soundness examination procedure in plains bison bulls. DESIGN: Multiyear (1993 through 1997) cross-sectional clinical procedure evaluation. ANIMALS: Two hundred thirty-four 28- to 30-month-old bison bulls at Custer State Park. PROCEDURE: Breeding soundness examinations were performed on all bison bulls using 1992 Society for Theriogenology guidelines ...
Ezeh U I - - 1999
Although testicular biopsy for sperm extraction is a procedure with a potential for complications, sperm retrieval is successful in 30-70% of patients with non-obstructive azoospermia. In order to predict the probability of retrieving at least one testicular spermatozoon we conducted a prospective study of a set of variables in 40 ...
Boone W R - - 1999
In the near future, 6 of 8 bear species will face extinction mainly because of loss of their natural habitat. This loss of habitat will ultimately require some of these bears to be maintained in zoos and wildlife preserves in the hope of conserving genetic diversity. If the giant panda ...
- - 1999
Kim J K - - 1999
This study deals with the morphological degenerations of normal and atretic follicles based on artificially induced radiation apoptosis. ICR strain of 3 week-old female mice were whole body irradiated with 8.3 Gy and sacrificed by cervical dislocation. Ovaries were collected at 0 h, 6 h, 12 h, 1 d, 2 ...
Silva P D - - 1998
OBJECTIVE: To investigate whether gamete intrafallopian transfer (GIFT) may be a cost-effective alternative to donor oocyte procedures in women 40 and older with good ovarian reserve. STUDY DESIGN: Retrospective review of records at an infertility clinic in a large multispecialty group practice. Twenty two consecutive women aged 40 and older ...
Lang I M - - 1998
The objectives of this study were to identify and to characterize the pharyngoesophageal inhibitory reflex (PEIR) in an animal model. Thirty-one cats (2.4-5.0 kg) were anesthetized using alpha-chloralose (45 mg/kg ip), and esophageal peristalsis was recorded manometrically. Secondary peristalsis was activated by rapid air injection (8-20 ml) at midesophagus or ...
Kara A - - 1998
The acute onset of cyanosis in an infant is an alarming development. We report an infant who became cyanotic after injection of prilocaine. Prilocaine is a local anesthetic that is widely used in clinical practice, but usage in infancy easily causes methemoglobinemia. Acquired methemoglobinemia occurs in individuals exposed to an ...
Aytoz A - - 1998
OBJECTIVE: To describe the outcome of pregnancies obtained after intracytoplasmic sperm injection (ICSI) and the impact of the origin and quality of sperm used on this outcome. DESIGN: Retrospective analysis. SETTING: A tertiary referral center for assisted reproduction. PATIENT(S): Pregnant patients conceived after microinjection of ejaculated sperm (n=1,427), epididymal sperm ...
Robert L L - - 1998
The effect of Bacillus sphaericus, at various concentrations, on hatching of phlebotomine sand fly eggs was examined using laboratory bioassays. Aqueous suspensions of B. sphaericus, strain 2362, inhibited hatching of eggs of Phlebotomus duboscqi and Sergentomyia schwetzi by 95% at concentrations as low as 0.05 and 0.11 mg/cm2, respectively. In ...
Quiroga R - - 1998
This study evaluated the performance, acceptability, and appropriateness of a new, single-use, prefilled injection device called UniJect for an outreach immunization application. Between April and June 1995, UniJect devices were used by 36 traditional birth attendants to administer tetanus toxoid injections to 2,240 pregnant women during routine, antenatal home visits ...
Roepstorff A - - 1998
Paired samples of faeces and blood were collected from weaners (W), fatteners (F), lactating sows (S) and piglets (P) in 20 Danish sow herds. The samples were examined by a McMaster technique for Ascaris suum eggs and an indirect ELISA for anti-A. suum IgG. The coprological and serological results were ...
Vidarsson G - - 1998
Streptococcus pneumoniae is a major respiratory pathogen of infants, children, and the elderly. Polysaccharide vaccines have been useful in adult populations but do not elicit protective immunity in infants and young children. To enhance their immunogenicity, vaccines of pneumococcal polysaccharides conjugated to proteins are being developed. In this study antibody ...
Suda T - - 1998
Thirty fertilized chicken eggs preincubated for 0, 7, and 10 days on earth (10 eggs each) were flown in the space shuttle "Endeavour" and further incubated for 7 days under microgravity. Twenty out of 30 eggs (nine out of ten 10-day-old eggs; 10 out of ten 7-day-old eggs; 1 out ...
Aslam I - - 1998
During 1995 and 1996 the first spermatid pregnancies were announced with both round spermatid (ROSI) and elongated spermatid (ELSI) injections. These publications were flanked by live births from ROSI in a number of animal species, with resulting offspring appearing normal, healthy and fertile. However, the live births in humans heralded ...
Cody M M - - 1998
Research is ongoing to develop improved birth control methods and additional contraceptive methods to increase reproductive choices for both men and women. To date, limited male contraceptive choices are available. Immunocontraceptives, injectables, implants, and pills are in developmental stages to become future male contraceptive options. Researchers are pursuing several new ...
Hearn C M - - 1998
The effects of the prolactin inhibiting drug, cabergoline, on pregnant and lactating marsupials were investigated in four species from three diverse families: the tammar wallaby, Macropus eugenii, the quokka, Setonix brachyurus, the brushtail possum, Trichosurus vulpecula, and the fat-tailed dunnart, Sminthopsis crassicaudata. In tammar wallabies, 20 micrograms cabergoline kg-1 injected ...
Latham V H - - 1998
For decades it has been assumed that in order to insert macromolecules into the embryo blastocoel for numerous experimental purposes, microinjection was required. Microinjection, however, can be only performed on a few embryos at a time, thus precluding many studies that could involve large populations of embryos. Laser scanning confocal ...
Lagos R - - 1998
BACKGROUND: In recent years additional parenteral vaccines have been recommended for routine immunization of infants in the US and elsewhere. The ability to administer multiple vaccines as a single injection without unacceptably increasing reactogenicity or decreasing immunogenicity of any component would offer many practical advantages. METHODS: A randomized, open, controlled ...
Songsasen N - - 1998
The objective of this study was to determine the viability and fertility of mouse spermatozoa obtained at various postmortem intervals. Male mice were euthanized, and the bodies were kept at approximately 22 degrees C for up to 24 hr. The epididymides were removed and spermatozoa were allowed to swim out ...
Yang X - - 1998
Since bovine in vitro fertilization became possible in the early 80s, a lot of effort has been done to clarify the mechanisms of what seems more and more one of the crucial steps in this procedure, being oocyte maturation. Undoubtedly, many biological factors act together to prepare the immature oocyte ...
Fanchin R - - 1998
OBJECTIVE: Our purpose was to assess the possible relationship between human embryo growth rates and sexual differentiation. STUDY DESIGN: We analyzed 142 conceptional in vitro fertilization and embryo transfer cycles undertaken in 137 women (151 embryos transferred) in which each embryo transferred led to a gestational sac. Embryos were sorted ...
Zwaan J - - 1997
A 4-month-old infant received an accidental intraocular injection of methylprednisolone while undergoing penetrating keratoplasty for congenital, hereditary endothelial dystrophy. This was not discovered until 4 months later, at which time the intraocular pressure (IOP) was increasing and an early cataract was forming. A lensectomy and vitrectomy were performed when the ...
Kurinczuk J J - - 1997
OBJECTIVE: To test the hypothesis that liveborn infants conceived by intracytoplasmic sperm injection are at an increased risk of having a major birth defect. DESIGN: Reclassification of the birth defects reported in infants born after intracytoplasmic sperm injection in Belgium and comparison with prevalence estimated in Western Australian population by ...
Fox H - - 1997
The clinicopathological features of hydatidiform moles are described. Criteria are given for distinguishing between partial and complete moles and it is stressed that this distinction can be difficult when complete moles are detected, by ultrasound, at an early stage of their development: the diagnostic value of cytometry is emphasized. The ...
Hlywka J J - - 1997
Chicken embryos and brine shrimp naulpii were utilized in short-term toxicity bioassays to assess their sensitivity to the mycotoxin fumonisin B1 (FB1). Fertile chicken eggs (Cobb x) were dosed with FB1 on day 2 of incubation by the injection of 100 microliters of aqueous solution into the air space of ...
Strong C - - 1997
Some have argued that embryos and fetuses have the moral status of personhood because of certain criteria that are satisfied during gestation. However, these attempts to base personhood during gestation on intrinsic characteristics have uniformly been unsuccessful. Within a secular framework, another approach to establishing a moral standing for embryos ...
Porcu E - - 1997
OBJECTIVE: To describe the first birth achieved after intracytoplasmic sperm injection (ICSI) of cryopreserved human oocytes. DESIGN: Case report. SETTING: University of Bologna Hospital, Department of Obstetrics and Gynecology, Reproductive Endocrinology Unit, IVF and Infertility Center. PATIENT(S): One patient undergoing IVF. INTERVENTION(S): Transvaginal ultrasound-guided oocyte retrieval followed by oocyte freezing. ...
Jimenez C - - 1997
OBJECTIVE: To assess whether sperm recovered from postejaculatory urine and cryopreserved can be used successfully for intracytoplasmic sperm injection (ICSI). DESIGN: Case report. SETTING: Laboratory of Developmental and Reproductive Biology, University Hospital. PATIENT(S): A couple with male infertility resulting from complete retrograde ejaculation. INTERVENTION(S): Freezing of sperm recovered from urine ...
Castellotti D S - - 1997
OBJECTIVE: To present a successful transfer of microhatched embryos to the fallopian tubes via microlaparoscopy. DESIGN: Case report. SETTING: Private practice affiliated with a medical university. PATIENT: A 40-year-old woman with primary infertility, mildly elevated baseline FSH levels, and a history of poor ovarian response to ovulation induction. Her husband ...
Meng L - - 1997
Genetically identical nonhuman primates can provide a powerful animal model for gene therapy and research activities where the physiological parameters directly or indirectly under study are heritable. Here we demonstrate that nuclear transfer is a viable technology for the production of identical rhesus macaques. Oocytes recovered from gonadotropin-treated females were ...
Bedford J M - - 1997
The gametes of the least shrew, Cryptotis parva, were studied in regard to their maturation and structure, and with particular emphasis on their behavior in the fallopian tube, from the time of ovulation until the appearance of two-cell embryos beginning some 9 h after ovulation. Cryptotis spermatozoa are organized according ...
Godfrey R W - - 1997
Two trials were conducted to evaluate the efficacy of oestrous synchronisation procedures in St. Croix White, Barbados Blackbelly hair and Florida Native wool ewes. In Trial 1 (conducted in June), 27 ewes were treated with controlled internal drug release (CIDR) devices for 12 days (CIDR1) and 29 untreated ewes served ...
Edirisinghe W R - - 1997
This case report describes the birth of a baby following the transfer of cryopreserved embryos generated from intracytoplasmic sperm injection (ICSI) carried out on the second day after oocyte pick-up of in-vitro-matured metaphase I and germinal vesicle stage oocytes. The couple had a history of three failed intrauterine insemination attempts ...
Soley J T - - 1997
Nuclear condensation during spermiogenesis in the ostrich follows the basic pattern established in other vertebrates. The fine granular nuclear substance of early spermatids is gradually replaced by numbers of coarse dense granules which appear to arise by aggregation of smaller dispersed elements of the chromatin. The granules increase in size ...
Dominko T - - 1997
The effect of maturational state of bovine oocytes at the time of insemination on early embryo development and the sex ratio of developing embryos was evaluated. Early maturing oocytes were inseminated either immediately after the first polar body extrusion or insemination was delayed for 8 h. Most of the zygotes ...
Nurmahmudi - - 1997
In this study, different methods of 0.2 M or 0.3 M CaCl2 delivery into hot-boned spent Leghorn breast fillets followed by tumbling were evaluated. The CaCl2 was delivered by adding 10% (wt/wt) solution into the tumbler, injection 10% (wt/wt) into the fillet, or soaking at room temperature for 15 min ...
Woods K L - - 1997
The goal of these experiments was to determine the effects of CaCl2 and NaCl injections on spent fowl meat tenderness and oxidative stability. Two hundred spent Leghorn hens were used in this two-part study. In the first experiment, breast fillets from 160 spent Leghorn hens were harvested immediately after death, ...
Donders G G - - 1997
BACKGROUND: Syphilis remains a major cause of premature birth, fetal and perinatal death, and congenital syphilis in South Africa, despite systematic antenatal screening by rapid plasma reagin and treatment with 2.4 million U of benzathine penicillin G. GOAL: To determine whether one injection of 2.4 million of U of benzathine ...
Adams C F - - 1996
We observed the effect of the 5-hydroxytryptamine synthesis inhibitor p-chlorophenylalanine on aggression in male firemouth cichlids (Cichlasoma meeki). p-Chlorophenylalanine-treated firemouths showed a significantly greater number of mirror-directed bites as compared with saline-injected controls. This finding is consistent with the effects of this drug on social aggression in mammals and birds ...
Hornung M W - - 1996
Use of fish-specific toxic equivalency factors (TEFs) to estimate the risk that exposure to polybrominated dibenzo-p-dioxins (PBDDs), dibenzofurans (PBDFs), and biphenyls (PBBs) pose to fish early life stage survival depends on validation of the hypothesis that these chemicals act additively to produce mortality. A rainbow trout early life stage bioassay ...
Ford-Jones E - - 1996
To determine the prevalence of infection with toxoplasmosis by country of birth and age in a sample of convenience. Banked sera and the computerized data base of demographic and other factors from an earlier epidemiological study were retrieved. Thirty-eight infant-toddler day care centres in Toronto. Day care providers from whom ...
Saha S - - 1996
In the present study, IVF bovine embryos were vitrified using as the cryoprotectants, ethylene glycol plus trehalose plus the polymer, polyvinylpyrrolidone (PVP). In Experiment I, toxicity of the vitrification solution (VS) containing 20% PVP was tested in relation to temperature and exposure time. One hundred percent embryo development was observed ...
Kraushar M F - - 1996
To prevent accidental intraocular injection after inadvertent single needle perforation of the eyeball, the authors recommend moving the needle and watching for corresponding movement of the globe following peribulbar or retrobulbar placement of the needle and prior to injecting. The authors have found this technique to be safe and reliable, ...
Walker M K - - 1996
Use of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) toxicity equivalents concentration (TEC) assumes that polychlorinated dibenzo-p-dioxins (PCDDs), dibenzofurans (PCDFs), and biphenyls (PCBs) act additively and via a common mechanism to cause toxicity. To test these assumptions, 11 TCDD-like congeners and three non-TCDD-like congeners were combined at ratios typically found in Lake Michigan lake trout. ...
Nestor K E - - 1996
Japanese quail lines were divergently selected for 4-wk BW (HW and LW lines) and plasma yolk precursor [total plasma phosphorus (TPP); HP and LP lines] for 30 generations. The base population was a randombred control line (R1) that was maintained along with the selected lines. Sublines were established from the ...
Brown C R - - 1996
1. The ostrich industry in South Africa (and elsewhere) experiences a high rate of embryo mortality during artificial incubation of eggs. Most of this mortality takes place in the last l0-l4 d of incubation. 2. We carried out post-mortem examinations on 111 embryos that died within this period to assess ...
Irvine S - - 1996
OBJECTIVE: To determine whether the quality of semen has changed in a group of over 500 Scottish men born between 1951 and 1973. DESIGN: Retrospective review of data on semen quality collected in a single laboratory over 11 years and according to World Health Organisation guidelines. SETTING: Programme of gamete ...
Claeys D - - 1996
Human type A chronic gastritis or autoimmune gastritis (AIG) is associated with gastric H,K-ATPase-specific autoantibodies (HKAb). The pathogenic role of the HKAb and the triggering autoantigen(s) are unknown. In a mouse model, neonatal thymectomy (nTx) induces AIG, which is likely T cell mediated, although HKAb are always present. Our aim ...
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