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ABSTRACT: Aim: To evaluate if anti-Müllerian hormone (AMH) is a reliable marker of ovarian reserve in young women undergoing ovarian tissue cryopreservation. Patients & methods: Relationships of serum AMH levels with primordial follicle density, age and reproductive hormones were investigated using the Pearson or Spearman correlation coefficient in 86 women with cancer (12–38 years) undergoing ovarian tissue cryopreservation. AMH variations through the menstrual cycle were assessed by the Kruskal–Wallis test. p

Metabolic activation of peripheral blood leukocytes (chemiluminescence) from 27 children with Down syndrome (DS) and 23 age and sex-matched control children after phagocytic stimulation by opsonized zymosan particles was investigated through a chemiluminescence assay. Using autologous plasma or serum as opsonizing media, phagocytic activity of circulating leukocytes was significantly decreased in DS subjects. A further decrease of phagocytic activity was found in neutrophils from DS children, when normal heterologous plasma or sera were used. On the other hand, sera or plasma from DS subjects significantly increased phagocytic activation of leukocytes from normal donors. In DS subjects opsonizing agents such as serum immunoglobulins and complement fractions were in the normal ranges of concentration. Thus, the impaired chemiluminescence of neutrophils was mainly due to a metabolic impairment at the cellular level. A decreased production of radicals derived from the oxygen metabolism in neutrophils may be an important step of immune derangement leading to the increased incidence of infectious diseases frequently associated with DS.

Apparently healthy elderly donors were screened according to a simple protocol that included clinical examination and the determination of hematological and biochemical values. This screening was performed to detect subclinical alterations which might interfere with immune responses and trace element status. The elderly were divided into two groups. The first group consisted of 22 (age 76 +/- 1 years) positively selected elderly (PSE), i.e. healthy subjects with no hematological and laboratory alterations, the second one comprised 13 (age 75 +/- 1 years) negatively selected elderly (NSE). Data were then compared with those obtained from 40 (age 35 +/- 2 years) healthy young controls. In both groups of elderly donors, plasma zinc levels were normal, while plasma copper concentrations were increased. Intracellular values of zinc and copper in mono- and polymorphonuclear cells from both groups of elderly were within reference limits. After in vitro activation, granulocyte chemiluminescence activity was impaired only in NSE. A decrement in the number of circulating CD3 lymphocytes and an increase in CD8d, CD57 cells were found in PSE, while NSE showed an increased number of CD3,DR cells and CD8d, CD57, CD8b,CD57 and CD16,CD56 positive cells. Our results indicate that only plasma copper levels were affected by age, whereas subclinical alterations in hematological or biochemical values appear to impair immune responses in the elderly.

Background: Tuftsin activity (TA) is reduced in cirrhosis. This contributes to the defective phagocytic activity (PA) of neutrophil granulocytes and is related to the impairment of splenic function. Orthotopic liver transplantation (OLT) cures cirrhosis and might restore TA. This study was aimed at determining if OLT restores TA and PA. Methods: We measured in 9 cirrhotic patients, before and after successful OLT, TA by a bioassay and PA by chemiluminescence in which neutrophils of the patient were tested with both autologous (PA1) and pooled sera from healthy subjects (PA2). Splenic function was assayed by the pitted red cell count. Results: Before OLT, TA was reduced in 7 patients, and PA1 in all the patients. Pitted cell count was elevated in all the patients. After OLT (median 39 months; range 21–49), TA improved in all cases [median: from 8% (5–16%) to 20% (9–22%), p < 0.008], normalizing in 5 out of the 7 patients with low values. PA1 improved in all the patients [from 102 cpm (65–128 cpm) to 235 cpm (78–280 cpm), p < 0.008], normalizing in 5. Pitted red count decreased in 7 patients and normalized in 3 [from 3.3% (2.1–6.0%) to 2.4% (1.4–2.8%), p < 0.021]. Platelet count [from 55 × 103 (30–100) to 185 × 103 (93–286), p < 0.008] and leucocyte count [from 3.60 × 103 (1.81–5.23) to 5.53 × 103 (3.31–6.71), p < 0.008] also improved. Conclusions: OLT improves TA and PA of cirrhotic patients. This effect is associated with an improvement of both functional hyposplenism and haematological hypersplenism. The restoration of natural defences against infections may mitigate the adverse effect of immunosuppressive treatment.

The metabolic activity of circulating neutrophils from patients with senile dementia of the Alzheimer's type (SDAT) was investigated by a chemiluminescence assay and compared with that of old and young healthy controls. Neutrophils from demented patients showed a higher and faster chemiluminescence emission than those of controls when activated in vitro by autologous or heterologous sera. Granulocytes from patients with Parkinson's disease did not show an increased chemiluminescence activity. Moreover, serum from patients with SDAT depressed the chemiluminescence emission of granulocytes from young donors. Serum levels of α 1 -antichymotrypsin ( α 1 -ACT) were also determined and were found to be higher in demented subjects than in old and young controls. These data suggest that peripheral and systemic indexes of inflammation are present in the disease and might be associated with mental deterioration.