An electron microscopic study on the type I pneumocyte in the cat: differentiation

This investigation describes the differentiation of the type I pneumocyte from undifferentiated pulmonary epithelium. Cells lining subpleural alveolar septa were photographed from serial sections with the electron microscope and a three dimensional representation of each cell was obtained by transferring the contours of the cell membranes from micrographs to transparent plastic sheets which were then spaced to scale and stacked. The results of this study indicate that: (1) the only reliable criterion for differentiating between type I and type II cells is the commencement of attenuation of the type I cell; (2) differentiation of the type I cell occurs via the formation of one or more cytoplasmic attenuations that eventually fuse peripherally, thereby surrounding the unattenuated cell soma; (3) with respect to individual cells, blood-air barriers tend to form in distal areas of the attenuating cytoplasm before proximal areas; (4) both type I and type II pneumocytes retain certain characteristics that reveal their common origin.     

Emotional arousal and aggressive behavior

Reviews evidence that (a) supported the proposition that general emotional arousal facilitates aggression in the presence of aggressive cues and (b) substantiated the position that an arousal state of anger specifically increases the instigation to aggression. Furthermore, research is reviewed which supports the view that additional general arousal increases or decreases the effect of anger on aggression, depending on whether the arousal state is attributed to the source of the anger or to another source of general arousal. Controversy about the anger/aggression relation is discussed in terms of the failure to specify the function of the aggressive response. Research revealed that if the aggressive response is directed primarily toward injuring the target (but not toward some other goal), an angered person expresses aggression. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Effect of prolactin on carbohydrate metabolism in human semen

In a pediatric office setting, car safety counseling was provided to 16 primigravida women during a prenatal pediatric interview. A control group of 19 women received no counseling during a similar interview. Forty-two percent of noncounseled mothers and 69% of counseled mothers were using a safe infant restraint system at the six-week well-child visit. Preventive counseling in car safety is an important role for the pediatrician.     

Management of uremic pericarditis: a report of 11 patients with cardiac tamponade and a review of the literature

Uremic pericarditis remains a significant cause of morbidity and mortality in most hemodialysis programs. A review of the literature and out own experience show that uremic pericarditis should be vigorously treated when detected. Usually an increase in the dialysis program with regional heparinization is sufficient to control the pericarditis. When signs of pericardial effusion are manifested, patients often progress rapidly to cardiac tamponade. A surgical anterolateral pericardiectomy is the most satisfactory measure in controlling pericardial effusion and preventing fatal cardiac tamponade. Although these patients have severely impaired renal function, the operation can be performed safely with a low morbidity and mortality.