ABSTRACT
OBJECTIVE: To investigate the expression of apoptosis related proteins and apoptotic cells on the human ovarian follicles. MATERIALS AND METHODS: Thirty five Formalin-fixed paraffin-embedded human ovarian tissue blocks were selected from the surgical pathology files of the department of pathology, College of Medicine, Yonsei University, for the period from 1996 to 1998. All specimen were from premenopausal women aged from 32~45. Ovarian tissues were collected from the patients performing hysterectomy for benign uterine diseases. Immunohistochemical staining was performed for the detection of DNA fragmented cell, Bcl-2, Bax, Fas and Fas-ligand. RESULTS: Bcl-2 and bax were not expressed on the surrounding cells and oocyte of the primary, primordial and preantral follicles. Fas and Fas-ligand (Fas-L) were not expressed on the surrounding cells on the primordial and primary follicles. But expressed on the surrounding granulosa cells and oocyte in the primordial and primary follicles. In the healthy follicles, Bcl-2 was expressed on the granulosa cells, however, Bax was not expressed. DNA fragmented cells were expressed on the inner granulosa cell layer of atretic follicles. CONCLUSION: Fas, Fas-ligand, and Bax may be responsible for the follicular atresia and Bcl-2 may be involved in the follicular survival in the human ovary.
Subject(s)
Female , Humans , Apoptosis , DNA , Follicular Atresia , Granulosa Cells , Hysterectomy , Oocytes , Ovarian Follicle , Ovary , Pathology , Pathology, Surgical , Uterine DiseasesABSTRACT
Periventricular leukomalacia is a major cause of neuro-developmental delay in premature infant. Although it develops in only a small percentage of preterm infants, the condition poses a major problem. The pathogenesis of periventricular leukomalacia is not well established. Because of the topography of the lesion, a decreased cerebral perfusion occurred before delivery is thought to be a critical pathogenetic factor. Therefore, hypoxic brain damage is thought to be a major cause of periventricular leukomalacia. The importance of neurochemically mediated injury to the white matter has been stressed. Recently, high incidence of placental chorioamnionitis with periventricular leukomalacia. We experienced a case of periventricular leukomalacia related to chorioamnionitis. The pathology of placenta was chorioamniontis, and it was thought to be a cause of periventricular leukomalacia. So, we report our case with a short literature review to ensuring that chorioamionitis without perinatal asphyxia cause a periventricular leukomalacia.
Subject(s)
Female , Humans , Infant, Newborn , Pregnancy , Asphyxia , Chorioamnionitis , Hypoxia, Brain , Incidence , Infant, Premature , Leukomalacia, Periventricular , Pathology , Perfusion , PlacentaABSTRACT
Periventricular leukomalacia is a major cause of neuro-developmental delay in premature infant. Although it develops in only a small percentage of preterm infants, the condition poses a major problem. The pathogenesis of periventricular leukomalacia is not well established. Because of the topography of the lesion, a decreased cerebral perfusion occurred before delivery is thought to be a critical pathogenetic factor. Therefore, hypoxic brain damage is thought to be a major cause of periventricular leukomalacia. The importance of neurochemically mediated injury to the white matter has been stressed. Recently, high incidence of placental chorioamnionitis with periventricular leukomalacia. We experienced a case of periventricular leukomalacia related to chorioamnionitis. The pathology of placenta was chorioamniontis, and it was thought to be a cause of periventricular leukomalacia. So, we report our case with a short literature review to ensuring that chorioamionitis without perinatal asphyxia cause a periventricular leukomalacia.