Toxoplasmosis is a zoonotic disease caused by Toxoplasma gondii. Risk factors include consumption of undercooked meat, raw vegetables, and unfiltered water. Aim: This study aims to screen antibodies titer in toxoplasmosis positive patients in Asabieh city in Libya and to screen risk factors associated with infection in this area. Study design: Data were collected using a cross-sectional design. Study Duration and Location: Data were collected from patients of different ages and gendersattending Ali Omar Ascar hospital, Asabieh, during the period of January 2017 to January 2018. Methodology: A single blood sample was collected from 150 patients and spun at 3000 rpm to obtain serum. The serum samples were analysedto detect anti-Toxoplasma IgG and IgM antibodies using enzyme linked immunosorbant assay (ELISA, BioChec) kit according to manufacturer’s instructions. A self-structured questionnaire was used to obtain information on farm animal’s contact, the process of vegetables washing, meatcooking, Water resource and raw water consumption. Results: The total seroprevalence of toxoplasmosis was 78.6%,out of which IgG and IgM were 68%, and 77.4% respectively. Several risk factors were identified, including daily contact with farm animals (82.6% were +ve, P = .0.01), unfiltered water (61.3% were +ve; P = 0.003). Conclusion: asabieh area showed a high prevalence of toxoplasmosis, and many environmental risk factors associated with the infection as animal hosts, human lifestyle were also identified, that could help to reduce the risk of spreading and transmission of infection among the populations in the future.
Basma Doro, Hend Shubar, Asma Ramadan, Badereddin Annajar(8-2019)

مرض الاكتئاب هو عبارة عن اضطراب عقلى واسع الانتشار يصيب الملايين من الاشخاص حول العالم وهو احدالاسباب المهمة المؤدية للإعاقة في جميع أنحاء العالم و في أسوأ حالاته يمكن أن يؤدي إلى الانتحار, والوفاة المأساوية المرتبطة بفقدان نحو 850 ألف شخص سنويا. هناك العديد من النواقل العصبية التى لها دور معروف في آليات الاكتئاب, والعقاقير المضادة له. ان المونوامين (السيروتونين والدوبامين والنورادرينالين) من المعروف أنها لها دور واضح فى هذا الشأن ولكن دور حمض غاما امينوبيمتاريك ( الجابا ) لا يزال غير واضح بشكل جيد, كما انه هناك العديد من الدراسات المعملية و السريرية التى أظهرت نتائج متضاربة بشأن الدور الحاسم للجابا في الاكتئاب. لذلك تقرر دراسة إذا كان الجابا له دور مباشر في علاج الاكتئاب من خلال دراسة التأثير المضاد للاكتئاب للأدوية المختلفة التي تنشط نظام الجابا بآليات مختلفة فى نموذج الكآبة المعترف به وهو (اختبار سباحة اليأس السلوكى) و هذه الأدوية تشمل؛ ( الدايازيبام ) وهو مضاد للقلق يعمل كمحور ايجابى للجابا عندما يتحد مع مستقبلات البنزوديازيبين، ( البرازولام ) الذى يعمل كمعزز لمستقبل (الجابا أ) ولديه ثأثير مزدوج كمضا د للقلق والاكتئاب عندما يتحد مع مستقبلات البنزوديازيبين، ( الزولبيدم ) وهو عقار منوم يستعمل على نطاق واسع و يعمل على مستقبل (الجابا أ) ويظهر جادبية عالية الى ( مستقبل الجابا أ الفرعى ( الفا1)، مضاد الصرع ( فيغاباترين) وهو مثبط غير رجعى وذو انتقائية عالية لئنزيم (غاما امينوبيمتاريك اسيد ترانزامينيز)، وأخيرا كان من الضرورى أن نشمل فى دراستنا مضاد الاكتئاب القياسى (الأميبرامين) الذى يعمل بتثبيط إعادة امتصاص ( السيروتونين، والنورادرينالين) من قبل الخلايا العصبية نتائج الدراسة المتصلة بقياس مدّة السكون الحركى فى اختبار سباحة اليأس السلوكى بعد 60 دقيقة من اعطاء الدواء اظهرت أن كل الأدوية المختارة المنشطة لنظام الجابا بآليات مختلفة ماعدا الجرعة العالية من ( البرازولام) قد انتجت زيادة مهمة فى مدّة السكون الحركى (مفعول مسبب للاكتئاب). هذه النتائج تدل على أن الناقل العصبى المثبط (الجابا)، ربما يكون قد سبب المفعول المشابه للاكتئاب نتجية تأثيره المسبب لنقص توفر المونوامين فى مناطق معينة من الدماغ، وللذلك استنتاجنا أن الزيادة فىنشاط نظام الجابا بالآليات المختلفة لن ينتج عنه مفعول مضاد للاكتئاب. Abstract: Depression is a common mental disorder affecting many millions of people worldwide and among the leading causes of disability worldwide. At its worst, depression can lead to suicide, a tragic fatality associated with the loss of about 850,000 lives every year. Many neurotransmitters have been suggested to be involved in the mechanisms of depression and antidepressant drugs. The role of the monoamines (serotonin, noradrenaline and dopamine) is well recognized. On the other hand, the role of gamma aminobutyric acid (GABA) is still not well recognized and many of the animal and clinical studies are showing conflicting findings regarding a crucial role of GABA in the pathophysiology of depression. Therefore, it was decided to examine if GABA has a direct role in depression by studying the antidepressant effect of different drugs that enhance GABA system by different mechanism by using a will established model of animal depression (forced swim test-FST). The drugs included diazepam an anxiolytic which acts as positive allosteric modulator of GABA when it binds to benzodiazepine receptors; alprazolam that act as GABAA receptor agonist with reported anxiolytic-antidepressant effect when it binds to benzodiazepine receptors; zolpidem which is a widely used hypnotic agent acting at the GABAA receptor and displays a high affinity to 1-GABAA receptor; the antiepileptic vigabatrin which is an irreversible and highly selective inhibitor of γ-aminobutyric acid transaminase; and finally imipramine was included as a standard antidepressant drug which acts by inhibiting the re-uptake of the neurotransmitters noradrenaline and serotonin. The results related to the measurement of the duration of immobility during FST after 60 min of drugs treatment showed that there was a tendency for all drugs (except for the high dose of alprazolam) to prolong the duration of immobility in dose dependent manner i.e. a depressant like action. These findings suggest that the neurotransmitter GABA might have produced a depressant like action by decreasing the availability of monoamines at certain brain areas. It was concluded therefore that increasing central GABAergic activity by different mechanisms will not result in an antidepressant activity.
نجوى أحمد الزحاف (2009)

The antibiotic elansolid C1 (8) was isolated from Chitinophaga sancti strain FxGBF13 after fermentation in the presence of anthranilic acid. Remarkably, 8 was also obtained by addition of anthranilic acid to a crude fermentation extract containing the macrolide elansolid A2 (1*). This Michael-type conjugate addition allowed us to generate 21 new derivatives of elansolid C1 (9-29) by using various nucleophiles. Biological activities of all derivatives were evaluated against Staphylococcus aureus, Micrococcus luteus, and the mouse cell line L929. arabic 9 English 74
Heinrich Steinmetz, Wiebke Zander, Muftah A. M. Shushni, Rolf Jansen, Klaus Gerth, Richard Dehn, Gerald Dräger, Andreas Kirschning, Rolf Müller(8-2012)