Angiotensin‐converting enzyme inhibition increases glucose‐induced insulin secretion in response to acute restraint

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Segmental contractile activity of the left ventricle in life threatening arrhythmia]

Intramural pressure (IMP) in the middle segment of the left ventricle and in the apex under ventricular extrasystoles was measured in experiments on the hearts of narcotized dogs. Early extrasystoles caused greater lowering of IMP and blood ejection. Bigeminia was associated with segmental and transmural nonuniformities of IMP which may be due to additional dragging effects in the myocardium. Magnitude of cardiac ejection under extrasystoles depends on nonuniform contractions of the segments of the left ventricle.     

Levamisole and splenin in combined therapy of patients with bronchiectasis

Follow-up of 114 patients with bronchiectasis has demonstrated that immunomodulation agents levamisole and splenin included in combined treatment augment their therapeutic effect and normalize the immune status of patients. This is manifested by normalization of the amount and functional activity to T-lymphocytes, the content of IgG, IgM and IgA and the autoimmune shifts. A favourable effect was encountered significantly more often than that in patient who were treated by the traditional methods without the use of the immunomodulation agents and in those who were given only levamisole and splenin together with anti-bacterial and hygienic therapy.     

Congenital abnormalities of the aortic arch: MR imaging

Thirty-four patients, 1 month to 63 years old, with known or suspected congenital abnormalities of the aortic arch underwent magnetic resonance (MR) imaging. Sixteen patients were studied retrospectively, 18 prospectively. In all retrospective studies, the aortic arch abnormality was seen with MR imaging. In the prospective studies, MR imaging enabled diagnosis in 15 of 18 (83%) patients. Twenty-nine of 34 patients underwent two-dimensional echocardiography; nine were studied retrospectively, 20 prospectively. In the prospective studies, echocardiography enabled diagnosis in 13 of 20 (65%) patients. Although two-dimensional echocardiography has a high sensitivity in the detection of aortic arch abnormalities in the neonate, arch abnormalities in the neonate, its sensitivity is lower in older children, adults, and postoperative patients. The authors' experience shows that MR imaging is an important, noninvasive modality in the evaluation of older children, adults, and postoperative patients with congenital aortic arch abnormalities.     

Biologically active substances in hydrazide derivatives of succinic heterylamides

Translated from Khimiko-farmatsevticheskii Zhurnal, Vol. 23, No. 7, pp. 825–828, July, 1989.     

The use of flannel flags for collecting fleas at the entrances of rodent holes in the steppes

Flannel flags (100 X 200 mm) were tested for fleas collection directly at the entrances of rodents' holes in the steppe region. The method proved to be most effective compared to some other wide-spread techniques. Flannel flags assured the highest number of insects collected during quantitative assessment of fleas' populations. Some insects belonging to other systematic groups can be also collected using the flags. Various number of fleas at the holes' entrances was revealed by this method of collection.     

Intrauterine contraceptive devices: MR imaging

To assess the safety of magnetic resonance (MR) imaging in women who have an intrauterine contraceptive device (IUD) in place, in vitro and in vivo studies were performed at both 0.35 and 1.5 T. Two commonly used IUDs were tested, one all of plastic, the other with a coil of copper wire on it. Specifically, the study assessed possible motion of the IUD in the magnetic field, potential of the IUD to heat up during two spin-echo imaging sequences commonly used in MR imaging of the pelvis (2,000/30 and 60 [repetition time, msec/echo time, msec], and 500/30), and the appearance on MR images of the IUD devices. A retrospective review of MR images of the pelvis in six women who had an IUD in place was also performed. Results show that an IUD does not move under the influence of the magnetic field, does not heat during spin-echo sequences commonly used for pelvic imaging, and does not produce artifacts in vitro or in vivo. Patients with either type of IUD can be safely imaged with MR, and MR images of the pelvis are not degraded by the presence of an IUD.