Growth of mountain belts in central Asia triggers a new collision zone in central India.

Several unusual strong earthquakes occurred in central India along the Narmada-Son Lineament (NSL) zone, far from active plate boundaries. To understand the role of collisional processes in the origin of this seismicity, we develop a numerical thermomechanical model of shortening between the Indian Plate and Asia. We show that at the final stage of collision, the shortening rate of the high mountain areas slows. The continuing convergence of India and Asia triggers the initiation of a new collision zone in continental part of India. Various geological and geophysical observations indicate that the NSL is a weakest zone with northward thrusting of the thinner central Indian lithosphere underneath the thicker northern part of the Indian Plate. We hypothesize that the NSL was reactivated during the final stage of the India Asia convergence and it will possibly form a new mountain belt within the Indian continent.

[CLINICO-MORPHOLOGICAL FEATURES OF FEMALE URETHRAL MEATUS POLYPS].

The aim of the study was to establish the clinical and morphological characteristics of female urethral polyps including cases with concomitant sexually transmitted infections. A total of 150 women were enrolled in the study. The evaluation of microcirculatory changes, morphological parameters and immunogram indices of urethral polyps were carried out. The most common infectious agent in patients with urethral polyps was Ureaplasma urealyticum. In those cases predominance of inflammatory symptoms and elevated levels of serum proinflammatory cytokines were identified. It is found that the pronounced inflammatory reaction leads to an increase in the relative area of the subepithelial microvascular bed and the cellular elements population of lamina mucosa propria, as well as to the relative predominance of congestive forms of microcirculation disturbances according to the laser Doppler flowmetry.

[Experimental microscopy and photography of the bulbar conjunctiva capillaries]. / Die Methodik der Capillaroskopie und der Capillarographie der Bindehaut des Auges beim Experiment.

The authors worked out a new method of in vivo observation and microphotography of the rabbit bulbar conjunctiva capillaries in this experiment. A Soviet-made luminescent contact microscope LUMAM K-1 (LOMO) was employed. In general, maximal magnification of this microscope for visual observation equals more than 600. The photographs for this experiment were made with magnifications of 150 and 200. A 10% sodium fluorescein solution was injected in the ear vein before the experiment (0.2 ml/kg of the body weight). The 500-unit, sensitive film was used for the photographs. Microvessel diameter was measured on the film with the help of a stereocamparator. As the data obtained demonstrate, conjunctival capillary diameter varied from 3 to 9 mcm, averaging 8 mcm. This method of contact biomicroscopy permits to the performance of capillarography and capillaroscopy of bulbar conjunctiva along with quantitative evaluation of capillary parameters and some reological indicators.

[Contact biomicroscopy in examination of blood vessels of the eye (author's transl)]. / Kontakt-Biomikroskopie bei der Untersuchung der Gefässe des Auges.

The vessels of the conjunctiva and iris were studied in 20 gray and albino rabbits. The luminescent contact microscope (MLC-1) was used, at maximum magnification 174 x for visual observation and 33 x for photography. The particular advantage of contact biomicroscopy is that it makes possible detailed observation not only of the superficial network, but also of the deep network of conjunctival vessels. Both the blood flow and the distribution of formal elements in vessel lumina can be observed.

[Model and the experimental therapy of acute increase of intraocular pressure (author's transl)]. / Modell und experimentelle Therapie akuter Steigerungen des intraokularen Druckes

Comparative experiments were carried out on 63 rabbits to study the acute increase in intraocular pressure which develops in the eye after introduction of prostaglandin F2 (instillations, subconjunctival injections) and other substances (hypertonic solution of sodium chloride, and reopirin). Tonometry, tonography, and radioisotope studies of aqueous humor (24Na, albumin-labeled 131I) were done. Differences in the display and mechanisms of acute increase of intraocular pressure were marked following administration of prostaglandin and a hypertonic solution of sodium chloride. It is stated that prostaglandin increases the permeability of the blood-aqueous humor barrier for the 24Na ions in comparison with hypertonic solution of sodium chloride, and that the eye, under the influence of prostaglandin, heightens intraocular pressure. Pretreatment with dizinon (etamsilat) reduces the increase in intraocular pressure caused by prostaglandin.

[The influence of isoglaucon on the hydrodynamics and haemodynamics of the eye (author's transl)]. / Einfluss des Isoglaucons auf die Hydro- und hämodynamik des Auges, Experimentelle und klinische Untersuchungen

By animal experiments and clinically we could prove that isoglaucon instillation caused the decrease in IOP due to both increase in outflow and reduction of humor secretion; the IOP decrease and changes in hydrodynamics being manifested more markedly in the fellow-eye. As reoophthalmography demonstrated "Isoglaucon" produced lumen narrowing in the anterior portion of the uveal tract. "Isoglaucon" was prescribed to 20 patients having open-angle-glaucoma, Two hours after instillation the 23 decreased in 26 eyes (of 28) by 9.3 +/- 1.0 mm Hg. When prescribed regularly "Isoglaucon" raised the outflow facility coefficient from 0.10 +/- 0.01 to 0.20 +/-0.02. The secretion decreased from 2.0 +/- 0.2 to 0.9 +/- 0.15. Thus, IOP decrease after "Isoglaucon" is accounted for by both improved outflow and reduction of aqueous humor secretion. The "isoglucon" instillation produced a rather moderate decrease in the total arterial pressure, though no expected parallelism in arterial and intraocular pressure was marked.