Investigation into diseases in free-ranging ring-necked pheasants (Phasianus colchicus) in northwestern Germany during population decline with special reference to infectious pathogens

The population of ring-necked pheasants (Phasianus colchicus) is decreasing all over Germany since the years 2008/2009. Besides impacts of habitat changes caused by current rates of land conversion, climatic influences or predators, a contribution of infectious pathogens needs also to be considered. Infectious and non-infectious diseases in free-living populations of ring-necked pheasants have been scarcely investigated so far. In the present study, carcasses of 258 deceased free-ranging pheasants of different age groups, predominantly adult pheasants, collected over a period of 4 years in the states of Lower Saxony, North Rhine–Westphalia and Schleswig-Holstein, were examined pathomorphologically, parasitologically, virologically and bacteriologically, with a focus set on infectious pathogens. A periocular and perinasal dermatitis of unknown origin was present in 62.3% of the pheasants. Additional alterations included protozoal cysts in the skeletal musculature (19.0%), hepatitis (21.7%), enteritis (18.7%), gastritis (12.6%), and pneumonia (11.7%). In single cases, neoplasms (2.6%) and mycobacteriosis (1.7%) occurred. Further findings included identification of coronaviral DNA from trachea or caecal tonsils (16.8%), siadenoviral DNA (7.6%), avian metapneumoviral RNA (6.6%), and infectious bursal disease viral RNA (3.7%). Polymerase chain reaction (PCR) on herpesvirus, avian influenza virus (AIV), paramyxovirus type 1 (PMV-1), avian encephalomyelitis virus (AEV), and chlamydia were negative. Based on the present results, there is no indication of a specific pathogen as a sole cause for population decline in adult pheasants. However, an infectious disease can still not be completely excluded as it may only affect reproduction effectivity or a certain age group of pheasants (e.g., chicks) which were not presented in the study.

Ultrasound guided percutaneous nephrostomy: Experience at ahmadu bello university teaching hospital, Zaria

BACKGROUND

Obstructive uropathy is a common problem in urologic practice; temporary relief of obstruction in the upper tract poses a significant challenge. Ultrasound-guided percutaneous nephrostomy (PCN) is an option for upper tract drainage; compared to fluoroscopic guidance, it is readily available, affordable, and not associated with radiation exposure. We present our experience with ultrasound-guided PCN.

PATIENTS AND METHODS

We studied all patients who had ultrasound-guided PCN in our center between January 2013 and January 2017. Information obtained included the patients' demographics, clinical details, primary pathology, indications, outcome, and complications within 30 days. Relevant data were extracted and analyzed using descriptive statistics.

RESULTS

A total number of 35 PCNs were performed in 26 patients within the period of study. The median age was 44.5 years. There were 17 females and 9 males. About 88.2% of the females had ureteric obstruction from advanced carcinoma of the cervix while the predominant cause of obstruction in the males was advanced carcinoma of the bladder. Kidney access under ultrasound guidance required well dilated collecting systems for success and ease of puncture. The most common complication was hematuria, which resolved within 24-48 h in all patients uneventfully.

CONCLUSION

PCN is an important and common procedure for temporary relief of upper urinary tract obstruction. While fluoroscopic guidance provides superior image guidance, ultrasound guidance is comparatively reliable, albeit with a longer learning curve. Adequate training, careful patients selection, and patience are key to success.

Self-perceived seizure precipitants among patients with epilepsy in Middle-belt of Nigeria

AIM

Patient's perception of seizure precipitant is crucial in epilepsy management, but it is often overlooked by physicians. This may be due to neglect and underestimation of its importance. This study looked at frequency and nature of self-perceived seizure precipitants among patients with epilepsy.

MATERIALS AND METHODS

A close-ended questionnaire-based study. Patients with active epilepsy (≥2 attacks/year) were recruited from the neurology clinic of the University of Ilorin Teaching Hospital (UITH), Ilorin.

RESULT

A total of 89 patients participated in the study and of these 41 (46.1%) were males. Their median age was 30 (21-52) years and median age at seizure onset was 22 (15-46) years. The median seizure duration was five (2-14) years. More patients (46.1%) had less than secondary school education and 12 (13.5) were uneducated. Generalized epilepsy was the predominant (68.6%) seizure type. A total of 33 (37.1%) subjects had ≥4 attacks/year, 29 (32.6%) had 5-12 attacks/year, and 27 (30.3%) >12 attacks/year. A total of 16 (18%) subjects did not mention any seizure precipitant, whereas 73 (82.2%) reported at least one specific seizure precipitant; of these, 62 (85%) patients reported ≥2 precipitants. Stress (41%), inadequate sleep (27%), and head trauma (26%) were the three leading seizure precipitants mentioned. Subject's age, sex, level of seizure control, and place of abode did not influence reported seizure precipitants. However, the more educated (>12 years education) patients significantly reported stress as seizure precipitant (P < 0.05). Most (80%) patients rightly indicated that antiepileptic drug was the best treatment for their seizure control.

CONCLUSION

The result of this study showed that the leading perceived seizure precipitants among epilepsy patients attending the neurology clinic of UITH were stress, inadequate sleep, head trauma, and demonic attacks and spells.

Electrochemical performance of polypyrrole derived porous activated carbon-based symmetric supercapacitors in various electrolytes

The electrochemical performance of porous carbon prepared from the polymerization and carbonization of pyrrole is presented in this work.

A wafer-scale Bernal-stacked bilayer graphene film obtained on a dilute Cu (0.61 at% Ni) foil using atmospheric pressure chemical vapour deposition

A wafer-scale (scale of an entire foil) AB-stacked bilayer graphene film obtained on a dilute Cu(Ni) foil using AP-CVD.

Exploring the stability and electronic structure of beryllium and sulphur co-doped graphene: a first principles study

First principles density functional theory calculations have been performed to explore the stability, structural and electronic properties of Be and S co-doped graphene sheets.

The Impact of an educational intervention on knowledge of attention-deficit hyperactivity disorder among primary school teachers in Lagos Nigeria

Objective: Primary school teachers have been identified as important partners in the prompt recognition, referral and management of children with ADHD. However their capacity to function in these roles is hinged on their extent of knowledge about ADHD. Furthermore teachers' knowledge about ADHD may influence the education and clinical outcomes of children with ADHD. This study assessed the impact of an educational intervention program on knowledge about ADHD among primary school teachers in Lagos, Nigeria. Method: An experimental study of the impact of a brief educational intervention on ADHD literacy among primary school teachers (n=144) in Lagos, Nigeria. At baseline, knowledge about symptoms and treatment of ADHD was elicited with a vignette-based questionnaire. The intervention consisted of the administration of an educational leaflet about ADHD, designed by the American Academy of Child and Adolescent Psychiatry. One week post-intervention, the baseline assessments were repeated. Results: At baseline, 92.4% of the teachers could not recognise features of ADHD. The majority were also unaware of the role of teachers, medications and psychological interventions in the management of children with ADHD. Post-intervention, significantly greater number of respondents compared with baseline (88.0% vs. 7.6%) correctly identified symptoms of ADHD (p<0.005), and agreed that ADHD could be successfully managed with medications (63.2% vs. 9.0%; p<0.005) and psychological treatment (79.2% vs. 16.7%; p<0.005). Conclusion: A simple low-cost educational intervention is effective in improving knowledge about ADHD among primary school teachers in the shortterm. Further research is required to evaluate the impact of this intervention in the long term.

Asymmetric supercapacitor based on an α-MoO3 cathode and porous activated carbon anode materials

Low cost porous carbon materials were produced from cheap polymer materials and graphene foam materials which were tested as a negative electrode material in an asymmetric cell configuration with α-MoO₃ as a positive electrode.

Investigation of different aqueous electrolytes on the electrochemical performance of activated carbon-based supercapacitors

Porous activated carbons was synthesized by an environmentally friendly technique, with an in-depth experimental study carried out to understand the electrochemical behaviour in different aqueous electrolytes (KOH, LiCl, and Na₂SO₄).

An additional strip of mesh minimizes hernia recurrence after laparoscopic totally extraperitoneal (TEP) inguinal hernia repair. An analysis of 490 cases over 10 years

AIM

The laparoscopic inguinal hernia repair has gained significant interest over the years as an alternative to the conventional open technique as a result of its faster recovery time, reduced postoperative pain and numbness. However the recurrence rates are in the order of 2.3% compared to the 1.3% quoted for the equivalent open approach. Much of these recurrences occur either caudal to the fold created in the mesh once in-situ or lateral to the border of the mesh. This technique aims to address both these areas of concern using an additional strip of mesh across the centre to brace the mesh and create a bolster to maintain mesh stability.

METHODS

The technique involves cutting a 2 cm strip from the 15x15 cm mesh which is laid length-ways over the remaining 13x15 cm mesh, keeping the longest dimension in the medial to lateral plane, and loosely tacked. The strip over hangs the lateral border of the mesh to control the lateral space. Recurrence rates were evaluated from a prospectively collected data series as well as outcomes collected from a questionnaire over a 10 year period between January 2001 and October 2011. Primary outcomes were confirmed hernia recurrence requiring surgical repair.

RESULTS

Four hundred ninety-one patients underwent laparoscopic totally extraperitoneal (TEP) hernia repair with outcomes including recurrence rates were retrospectively examined through a prospectively collected database. Subsequently 400 patients were sent a validated questionnaire. 246 responded (62% response rate). One recurrence (0.3%), which occurred 4 years after the original laparoscopic repair, was described across the series.

CONCLUSION

The use of the additional mesh strip potentially reduces TEP hernia recurrence rates beyond simply the benefits of the learning curve. Although, questionnaires are notoriously inaccurate, the value and consistency between both evaluation techniques suggests that this level of reduction is significant to warrant further prospective trials.