Étude biologique de deux espèces d'Aleurodes Bemisia tabaci Gennadius et Trialeurodes vaporariorum West (Homoptera, Aleurodidae) sur tomate dans la région du Souss Massa

L’étude biologique de deux espèces d’aleurodes inféodées à la tomate (Bemisia. tabaci et Trialeurodes vaporariorum) a été réalisée, d’une part, dans la station expérimentale d’Ait Amira et, d’autre part, dans trois exploitations dans région du Souss Massa. L’analyse de la composition démographique de leurs populations sur feuilles et le suivi de leurs adultes sur plaques jaunes ont permis de montrer que B. tabaci est le ravageur nuisible et le vecteur le mieux représenté sur tomate dans la région. Il atteint des proportions variant de 52 à 92%. L’espèce semble évoluer en 3 à 4 générations chevauchantes lorsqu’on se base sur le suivi hebdomadaire de ses pupes et la chronologie d’émergence de ses adultes

Modulation of left ventricular diastolic distensibility by collateral flow recruitment during balloon coronary occlusion

AbstractOBJECTIVESThe goals of this study were to elucidate the scaffolding effect of blood-filled coronary vasculature and to determine the functional role of recruited collateral flow in modulating left ventricular (LV) distensibility during balloon coronary occlusion (BCO).BACKGROUNDAlthough LV distensibility is an important factor affecting acute dilation after myocardial infarction, the response of LV diastolic pressure–volume (P-V) relations to coronary occlusion is inconsistent in humans.METHODSMicromanometer and conductance derived LV P-V loops were serially obtained from 16 patients undergoing percutaneous transluminal coronary angioplasty. Coronary collateral flow recruitment was angiographically evaluated by contralateral and ipsilateral contrast injection during BCO.RESULTSIn the group with poor collateral flow (grades 0–I; n = 8), BCO resulted in a downward and rightward shift of the diastolic P-V relations, where end-diastolic volume (EDV) increased by 13% (p < 0.05) without appreciable change in end-diastolic pressure (EDP; 18 ± 6 to 18 ± 8 mm Hg). In contrast, BCO in the group with good collateral flow (grades II–III; n = 8) shifted the diastolic P-V relations upward to the right with a concomitant increase in minimal pressure (min-P; 6 ± 4 to 10 ± 5 mm Hg, p < 0.05), EDP (15 ± 7 to 21 ± 9 mm Hg, p < 0.05) and EDV (+10%, p < 0.05). Reactive hyperemia after balloon deflation caused a rapid and parallel upward shift of the diastolic P-V relations with a marked increase in min-P and EDP, especially in the group with poor collateral flow, before any improvement in LV contraction or relaxation abnormalities.CONCLUSIONSGrades of coronary filling, either retrograde or anterograde, abruptly modulate LV distensibility through the rapid scaffolding effect of coronary vascular turgor

Knowledge and practice about mycetoma infection among community pharmacists in Khartoum State: A descriptive cross-sectional study

Mycetoma is classified as a neglected tropical disease, and despite its spread in Sudan, most physicians and pharmacists do not pay attention to the symptoms and proper treatment of mycetoma. Thus, this study aimed to evaluate knowledge and practice on mycetoma among community pharmacists in Khartoum state. A cross-sectional descriptive study was carried out among community pharmacists in Khartoum state, in the period from August to October 2021. Data was collected from the seven localities within Khartoum state using a validated self-administered questionnaire. The knowledge and practice of community pharmacists were assessed, and their association with demographic characteristics was calculated. Out of 347 pharmacists, 59.9% were females, 64.8% were between 22 and 28 years of age, and 79.3% were bachelor holders. Most of the participants (52.7%) had sufficient knowledge about mycetoma, the most common source of information was lectures (36.6%), more than half participants heard about the Mycetoma Research Center, and most of the cases seen by the participants were in the community (30.5%). There was no association between demographic data and knowledge score, except for knowing about the Mycetoma Research Center and attending workshops and seminars. Moreover, more than half of the participants showed good practice with mycetoma patients. The findings of the current study reflect that more efforts are needed to increase the knowledge and improve the practice of community pharmacists toward mycetoma

Screening Perspectives: The Role of Colorectal Cancer Awareness in Shaping Attitudes Toward Colonoscopy in Palestine

PURPOSETo assess colorectal cancer (CRC) awareness and its influence on attitudes toward colonoscopy in Palestine.MATERIALS AND METHODSConvenience sampling was used to recruit Palestinian adults from hospitals, primary health care centers, and public spaces across 11 governorates. To evaluate the awareness of CRC signs/symptoms, risk factors, and mythical causes, the Bowel Cancer Awareness Measure and Cancer Awareness Measure-Mythical Causes Scale were used after translation into Arabic. For each correctly recognized item, one point was given. The total awareness score of each domain was calculated and categorized into tertiles; the top tertile was considered high awareness, and the other two tertiles were considered low awareness.RESULTSA total of 4,623 questionnaires were included. Only 1,849 participants (40.0%) exhibited high awareness of CRC signs/symptoms. High awareness of CRC symptoms was associated with higher likelihood of showing positive attitudes toward colonoscopy (odds ratio [OR], 1.21 [95% CI, 1.07 to 1.37]). A total of 1,840 participants (38.9%) demonstrated high awareness of CRC risk factors. Participants with high awareness of CRC risk factors were more likely to display positive attitudes toward colonoscopy (OR, 1.20 [95% CI, 1.07 to 1.37]). Only 219 participants (4.7%) demonstrated high awareness of CRC causation myths. There was no association between awareness of CRC causation myths and positive attitudes toward colonoscopy.CONCLUSIONAwareness of CRC was poor with less than half of the study participants demonstrating high awareness of CRC signs/symptoms and risk factors, and a minority (<5%) displaying high awareness of CRC causation myths. High awareness of CRC signs/symptoms and risk factors was associated with greater likelihood of demonstrating positive attitudes toward colonoscopy. Educational initiatives are needed to address knowledge gaps and dispel misconceptions surrounding CRC