Cardiovascular and digestive effects of 2 mydriatics in the low-birth-weight newborn infant

We studied the pupillary cardiovascular and gastrointestinal effects of two parasympathetic blocker mydriatics. Thirty-four neonates were randomly assigned into 3 groups: A: Atropine sulfate 0.3%, B: Tropicamide 0.5%, C: placebo. Mydriasis was obtained in groups A and B (p less than 0.001). No hypertension was observed and only an increase in heart rate with atropine was significant (p less than 0.001). Gastrointestinal side-effects studied in 25 children revealed a disturbance in groups A and B as compared to placebo (p less than 0.01). Tropicamide is therefore a more useful drug in low birth weight infants due to the absence of cardiovascular and hypertensive side-effects. Those infants with gastrointestinal disease should be treated with caution due to the side-effects which may be encountered.     

Appendectomy with intraoperative celioscopy in children. 465 cases]

The authors report a retrospective series of 465 appendectomies with intraoperative celioscopy in children under age 16. The technical issues and the indications are discussed. The results are the following: No death, 3.6% intraoperative incidents of no consequence, 3% postoperative complications, including 1.3% requiring second surgery or celioscopy. These results are better than those obtained with conventional surgery. The advantages of appendicectomy with intraoperative celioscopy are the following: easy, quick search for the appendix, whatever its location, exploration of the entire abdominal cavity, possibility to perform a complete peritoneal washing, suppression of parietal complications, and almost no skin scar, definite reduction in the number of intraperitoneal residual abscesses, and likely reduction of postoperative adhesions, which are a cause of obstruction, of chronic pain and of infertility in girls, rapid resumption of transit and of all activities, including sports.     

Local inflammatory reaction induced by Bothrops jararaca venom differs in mice selected for acute inflammatory response.

Bothrops jararaca venom (BjV) causes severe systemic and local reactions, characterized by an acute inflammatory reaction with accumulation of leukocytes and release of endogenous mediators. The systemic and local effects of BjV were compared in lines of mice genetically selected for maximal (AIR(max)) or minimal (AIR(min)) acute inflammatory reactivity (AIR). The systemic reaction was evaluated by LD(50) and the local reaction by edema formation, cellular influx, release of PGE(2), NO and H(2)O(2) and the production of the pro-inflammatory cytokines IL-6, Tumor necrosis factor-alpha (TNF-alpha) and IFN-gamma. Both mouse lines were equally susceptible to the lethal effects of the venom showing similar LD(50) but differed significantly in terms of the local inflammatory reaction. Footpad edema and leukocyte influx in the peritoneum after BjV inoculation was higher in AIR(max) compared to AIR(min), BALB/c or outbred Swiss mice. Coincidently, higher levels of the soluble mediators PGE(2), IFN-gamma and TNF-alpha were detected in the inflammatory exudate induced by BjV in AIR(max) mice. Cytokines levels were correlated to in vitro NO and H(2)O(2) production. The results demonstrate that the genetic factors selected in AIR(max) and AIR(min) lines of mice interfere in the control of the acute local reaction triggered by BjV venom.     

Combined estrogen and ghrelin administration restores number of blood vessels and collagen type I/III ratio in the urethral and anal canal submucosa of old ovariectomized rats

We compare the effects of estrogen and/or ghrelin on vascular counts and collagen I/III ratio of urethral and anal canal submucosa in old vs young-adult ovariectomized rats. Ovariectomized Fisher 344 rats (18 and 3 months old, n = 24 x 2) received 42 daily intraperitoneal 17-ss estradiol (10 microg/kg), ghrelin (2 microg/kg), both, or vehicle (n = 6 x 4 per group). Blood vessel counts and collagen I/III ratio were measured, respectively, by light microscopy and Western blot analysis with immunohistochemistry of ghrelin receptors. Estrogen significantly increased urethral and anal vascular counts and collagen I/III ratio in young-adult rats. In old rats, only combined estrogen/ghrelin administration significantly increased both variables. This was not observed with estrogen or ghrelin separately. Ghrelin receptors were immunostained in urethral and anal submucosa of all samples. Combined estrogen/ghrelin administration restored postovariectomy urethral and anal canal submucosal vessel number and collagen I/III ratio in old rats suggesting independent ageing effect.     

Serological, clinical and epidemiologic analysis of 53 cases of kala-azar in the Arab Republic of Yemen

The visceral leishmaniasis (Kala-Azar) is present in Republic Arab of Yemen. On 53 cases diagnosed during 21 months in Taez Republican Hospital the disease is affecting essentially children (55 under five years old) with predominant focus in the area of Charaab and Qobeita. Serology using passive hemagglutination is helpful for the diagnosis when the rate is higher or equal to 1/64e. The problem of wrong positive reaction in cases of lymphoblastic leukemia and Hodgkin is noticed.