The possibility of using citric phosphate dextrose in chilling ram semen instead of egg yolk and soybean lecithin to improve fertility
JOURNAL OF ANIMAL PHYSIOLOGY AND ANIMAL NUTRITION
Authors: Mohamed, Mahmoud Yassin; Mahdy, Tarek M. M.; Khalifa, Ezz I.
Abstract
Semen chilling has some harmful effects on sperm characteristics. Modification of extenders by using conventional and non-conventional chilling substances can affect sperm characteristics and fertility. One of the important substances using to chilling human blood cells is citric phosphate dextrose (CPD); therefore, it can be used to store ram semen. This study aimed to assay the ability of CPD instead of egg yolk (EGD) and soybean lecithin (SLD)-based extenders to store ram semen at 5 degrees C. This trial was carried on pooling semen samples that were collected from five rams using a standard artificial vagina and an oestrous restrained ewe. Immediately after semen collection, semen was divided into four portions. The EGD, SLD and citric phosphate dextrose with an antibiotic (CPDA) and without antibiotic (CPD) were extender in the first, second, third and fourth portions of semen, respectively. Sperm characteristics were evaluated after dilution and cooling up to 7 days. Also, conception rate and fertility potential were assayed by 48 ewes (12 each) after 2 days of store ram semen extenders. Data clearly indicated that higher (p > .05) sperm characteristics in EGD, SLD and CPDA than CPD at 0 day of storage. Whilst, sperm characteristics from 1 day up to 7 days of storage were higher (p < .05) in EGD, SLD, CPDA extenders than CPD. Moreover amongst extender types, the advancing of chilling days reduced sperm characteristics. Also, the results showed an acceptable conception rate and the fertility rate of dilution ram semen, which stored 2 days in EGD, SLD and CPDA than CPD. Using of CPD substances with antibiotic in chilling extension ram semen has benefits as well as EGD- and SLD-based extenders. The future work should be conducted to validate these results in frozen ram semen.
Long-term Outcomes After Controlled Pericardial Drainage for Acute Type A Aortic Dissection
ANNALS OF THORACIC SURGERY
Authors: Nakai, Chikashi; Izumi, So; Haraguchi, Tomonori; Okada, Yasushi; Ijuin, Shinichi; Nakayama, Shinichi; Tsukube, Takuro
Abstract
Background. Cardiac tamponade with acute aortic dissection type A can cause fatal outcomes. We previously reported excellent outcomes using percutaneous pericardial drainage with controlled volumes of aspirated pericardial effusion (controlled pericardial drainage [CPD]) to stabilize patients with critical cardiac tamponade. This study evaluates the early and late outcomes using this approach. Methods. Between September 2003 and July 2018, 308 patients with acute aortic dissection type A were treated surgically, including 76 patients who presented with cardiac tamponade on hospital arrival. Forty-nine patients who did not respond to intravenous volume resuscitation underwent CPD in the emergency room, including 14 patients (28.6%) who presented with cardiopulmonary arrest. After CPD 39 patients (79.6%) were transferred to the operating room to undergo immediate aortic repair. The remaining 10 patients (20.4%) received medical treatment on arrival, followed by aortic repair within several days. Results. In 49 patients the mean systolic blood pressure before CPD was 64.4 +/- 10.3 mm Hg. Blood pressure rose significantly in all patients after CPD. The total volume of aspirated pericardial effusion was 46.8 +/- 56.2 mL, and 30 of 49 patients (61%) required only 30 mL or less of aspiration to improve their blood pressure. All patients underwent successful aortic repair. Early hospital mortality was 16%. However there was no mortality related to CPD. The mean follow-up period was 52.9 +/- 54.3 months. The cumulative survival rate was 63.4% after 5 years. Conclusions. CPD for critical cardiac tamponade with acute type A aortic dissection produced satisfactory early and late outcomes. (C) 2020 by The Society of Thoracic Surgeons