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Effect of testosterone loading on the kinetic of faecal testosterone excretion in mallards
Authors: Zsuzsa Szőke, Éva Váradi, K. Kelemen, A. Biczó and P. Péczely

Intestinal passage time of coloured fodder and testosterone turnover were examined by faecal steroid analysis in mallards in the reproductive and postrefractory period. In the latter, the discharge of coloured fodder began 36 minutes after ingestion in males, and 56 minutes in females. During reproduction the discharge began 93 minutes and 112 minutes after ingestion in males and females, respectively. Total passage time was similar in the reproductive and postrefractory period in both sexes. After intraperitoneal testosterone injection, faecal samples were collected for 8 hours and testosterone levels were measured using RIA. In the postrefractory period, 1-2 hours after testosterone loading a strong increase of faecal testosterone content developed in males, meanwhile a slighter testosterone peak appeared in females. During reproduction testosterone excretion began 1.5-2 hours after injection in both sexes but in females its increase was smaller. The duration of response to testosterone loading was 5 hours in both periods and both sexes. Intensive excretion after T loading appeared earlier in males than in females, but total passage time finished at the same time: 5 hours after loading. The character of testosterone excretion was corresponding to the passage of fodder-chimus-faeces in the reproductive and postrefractory period in both sexes.

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Comparative archaeometric study of bricks from the Southern Alföld
Authors: Éva Kelemen, Mária Tóth, Ferenc Kristály, Péter Rózsa and István Nyilas

The study focuses on the comparative archaeometric (petrographic, geochemical and archaeobotanical) analysis of the brick samples from the excavation of twenty-four rural churches of the Árpádian Age and the Late Middle Ages (11th–16th centuries), two kindred monasteries and three Árpádian Age settlements in Counties Békés and Csongrád. One of the main goals of the analysis was to determine the composition and the firing temperature of the bricks.

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Tracheotomia az új típusú koronavírus okozta járvány idején

(A COVID–19-pandémia orvosszakmai kérdései)
Authors: Ádám Perényi, Balázs Sztanó, Zsolt Bella, Ilona Szegesdi, Miklós Csanády, Éva Kelemen, Barna Babik and László Rovó

Absztrakt:

A jelenleg is zajló SARS-CoV-2 okozta pandémia miatt a betegek 6%-ában tartós gépi lélegeztetést igénylő légzési elégtelenség alakul ki. A későbbi felső légúti szűkület létrejöttének veszélye miatt „békeidőben” korai tracheotomia jönne szóba. A jelen helyzetben azonban a fokozott aeroszolképződéssel járó beavatkozások kerülendők, ezért a javallatok újragondolására van szükség. A nemzetközi ajánlások alapján alakítottuk ki saját eljárásrendünket. Orv Hetil. 2020; 161(19): 767–770.

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