ahmad yousef

Epididymal sperm collection is allowed by using genetic material post-mortem or after orchiec-tomy from high-value animals or endangered species.

The aim of this study was to improve the accessibility of the dog epididymal sperm cryopreserva-tion system based on the appropriate dose of lecithin.

Epididymal sperm from castrated testes of mature healthy dogs in veterinary centers were collected and divided into six groups: G1: egg yolk 20% (control), G2: lecithin 0.4% (L0.4), G3: lecithin 0.8% (L0.8), G4: lecithin 1.2% (L1.2), G5: lecithin 1.6% (L1.6), and G6: lecithin 2% (L2). Evaluation of Spermatozoa was done before freezing by Motility test, Eosin- Nigrosin vital staining and Hypo-Osmotic Swelling Test (HOST) and after thawing by Computer Assisted Semen Analysis (CASA), HOST, Eosin-Nigrosin vital staining, Mitochondrial Membrane Potential (MMP) and Intracellular Reactive Oxygen Species (ROS).

In frozen samples, total motility and proportion of sperm with intact plasma membrane integrity based on the HOS test were lesser in all groups treated with different concentrations of lecithin than in the control group (P≤0.05). However, beat cross frequency (BCF) was higher in all groups treated with different concentrations of lecithin as compared with the control group (P≤0.05). Yet progressive motility, the proportion of live sperm based on the Eosin- Nigrosin test, VAP, VSL, VCL, STR, LIN, and ALH did not differ among various experimental groups (P>0.05). The proportion of sperm with morphological defects did not differ between fresh and frozen sam-ples and among various experimental groups (P>0.05). Mitochondrial membrane potential was greater in the control group than 0.4% lecithin group (P=0.026). The proportion of sperm positive for ROS was lesser in the control group than 0.4% lecithin group (P=0.049).

Traumatic hip dislocations are common in high-energy motor vehicle accidents. We present a case of a 43-year old man who sustained posterior hip dislocation with posterior wall acetabular fracture and ipsilateral intertrochantric fracture following a motorcycle accident. Urgent open reduction and internal fixation of the hip fracture-dislocation and fixation of intertrochantric fracture with a dynamic hip screw were done. To our knowledge, such an injury has been rarely reported in the literature. Possible mechanisms of injury and operative procedures are discussed. Radiographic follow-up after eight months showed union. No major complications were observed in our patient.