Picosecond 532-nm neodymium-doped yttrium aluminum garnet laser—a promising modality for the management of verrucous epidermal nevi

The verrucous epidermal nevus (VEN) is the most common type of epidermal nevi. As lesions can be disfiguring, treatment is often sought. Many therapeutic approaches have been reported, with variable efficacy and safety. Picosecond (PS) lasers are novel laser devices designated to target small chromophores. A side effect of these lasers is blistering due to epidermal-dermal separation. We aimed to harness this side effect of the PS lasers to treat patients with VEN. The purpose of this study was to report our experience treating VEN using a PS 532-nm laser. We present a retrospective case series of six patients with large VEN who were treated using a PS 532-nm laser (2–6 treatments, 8–10 weeks apart). Response in clinical photographs was assessed by two independent dermatologists and graded on a scale of 0 (exacerbation) to 4 (76–100% improvement). Patient satisfaction was recorded on a scale of 1–5. All patients demonstrated significant improvement. Average improvement was 3.7 on the quartile scale of improvement. Patient satisfaction rate averaged 4.7. The PS 532-nm laser is a promising novel modality for the treatment of large VEN.     

Erythropoietin has an anti-myeloma effect - a hypothesis based on a clinical observation supported by animal studies

Recombinant human erythropoietin (rHuEpo) was introduced into clinical practice more than a decade ago, and has been found to be effective in the treatment of several types of anemia, including anemia of end-stage renal failure and cancer-related anemia. No study has suggested that Epo might have an effect on the biology of the disease, nor any survival advantage to cancer patients treated with Epo for anemia has been reported. Here we report six patients with advanced multiple myeloma (MM) with very poor prognostic features, whose expected survival was <6 months. All six patients were treated with rHuEpo for their anemia, either without any chemotherapy or very mild chemotherapy for a short time. Yet, surprisingly they lived for 45-133 months totally from MM diagnosis and 38-94 months with rHuEpo (with a good quality of life). In fact, one patient, is still alive and well, more than 8 yr after chemotherapy was discontinued because of a resistant aggressive disease. The course in these six MM patients led us to hypothesize that Epo might have an antineoplastic or antimyeloma effect. We proceeded and tested that hypothesis in mouse models of myeloma (Mittelman M et al., Proc Natl Acad Sci USA 98:5181,2001). In these models we confirmed that rHuEpo induced tumor regression in about 50% of the BALB/c mice inoculated with MOPC-315 myeloma cells. We then presented evidence that the mechanism is a new immune-mediated phenomenon, via activation of CD8+ T cells. Furthermore, evidence from the literature supports the antineoplastic effect of Epo. Epo might be used as an adjunct immune treatment in various malignant diseases, in addition to the current regimens and chemotherapeutic protocols. Future trials should determine the role of Epo in myeloma and cancer treatment, besides clarifying concerns about the presence of Epo receptors on some tumor cells.     

Excitatory and inhibitory corticospinal responses to transcranial magnetic stimulation in patients with minor to moderate head injury

OBJECTIVES: The changes in excitatory and inhibitory responses to transcranial magnetic stimulation (TMS), as attested by motor evoked potential (MEP) and silent period (SP) parameters, were compared in patients who sustained minor to moderate head injury. METHODS: A total of 38 patients with brain concussion, and diffuse, focal, and combined brain injury and 20 healthy volunteers were examined. The MEPs and SPs were recorded from the abductor pollicis brevis muscle after single pulse TMS 2 weeks after head trauma. The parameters assessed were the MEP resting threshold, the MEP/M wave amplitude ratio, the central motor conduction time (CMCT), the SP threshold, the interthreshold difference (ITD), and the SP duration (SPD). RESULTS: The main finding was an increase in the ITD in patients with mild and moderate head injury due to the relatively greater augmentation of the MEP threshold. This was associated with a reduction of the MEP/M wave amplitude ratio. The degree of MEP and SP changes depended on severity of head injury and was not related to the type of brain lesions. The SPD did not differ significantly in brain concussion, or diffuse, focal and combined brain injury groups compared with the control group. The CMCT was prolonged in patients with diffuse and combined brain lesions. Among subjective complaints only fatigue was significantly related to ITD, MEP, and SP threshold abnormalities. CONCLUSIONS: The results suggest that mechanisms involved in MEP and SP generation are differently affected in head injury, the first being impaired more severely. The increase of the ITD accompanied by reduction of the MEP/M wave amplitude ratio may reflect a dissociated impairment of inhibitory and excitatory components of central motor control in head trauma.     

Kleptomania: comorbid psychiatric diagnosis in patients and their families

OBJECTIVES: Kleptomania, defined by DSM-IV as the inability to resist the impulse to steal objects which are not needed for personal use or for their monetary value, may reflect a form of obsessive-compulsive spectrum disorder and/or affective spectrum disorder. METHODS: Twenty-one kleptomanic patients and 57 first-degree relatives completed a semistructured DSM-IV-based interview and questionnaires. Questionnaires are: the HDRS-17 (the Hamilton Rating Scale for Depression), the HARS (Hamilton Rating Scale for Anxiety), the Y-BOCS (Yale-Brown Obsessive Compulsive Scale), the YMRS (Young Mania Rating Scale). The two groups were compared to demographically matched normal controls (n = 64). RESULTS: We found a high prevalence of affective and anxiety disorders in our sample of kleptomanic patients and their first-degree relatives. In addition, the scores on the HDRS, HARS, and Y-BOCS were significantly higher in the study group than in the control group. CONCLUSIONS: Our finding of a high prevalence of psychiatric comorbidity in kleptomanic patients could lead to the development of new treatment strategies for this disorder. Furthermore, the pattern of psychiatric disorders seen in the first-degree relatives can lead to new insights about the nosology and etiopathology of kleptomania.     

Increased circulatory dehydroepiandrosterone and dehydroepiandrosterone-sulphate in first-episode schizophrenia: relationship to gender, aggression and symptomatology

Dehydroepiandrosterone (DHEA) is a major circulating neurosteroid in humans and its administration has demonstrated efficacy in the improvement of mood, with increased energy, interest, confidence and activity levels. Since recent findings have suggested the role of neurosteroids in general, and DHEA in particular, in the symptomatology and pharmacotherapy of schizophrenia patients with chronic illness, we investigated DHEA and DHEA-S blood levels in individuals in their first-episode of psychosis in order to exclude effects of age, chronic illness, long-term treatment and institutionalization. Blood levels for DHEA, DHEA-S and cortisol were obtained for 37 first-episode schizophrenia subjects and 27 normal age- and sex-matched controls and correlated with a range of clinical and side-effect rating scales. Baseline DHEA and DHEA-S levels were significantly higher in schizophrenia patients (p<0.05 and p<0.001, respectively). No gender differences were noted in DHEA levels; however, DHEA-S levels were significantly higher in male patients. DHEA-S levels inversely correlated with severity of illness (p<0.05) and aggressive behavior (p<0.05). Patients with higher DHEA-S levels tended to have shorter hospitalizations. Results suggest that individuals in their first-episode of schizophrenia psychosis may develop a neurosteroid response to the first onset of psychosis, which may be associated with a reduction in various adverse clinical features including aggression. Such a putative mechanism may become desensitized with the onset of chronic illness. While preliminary, these results further imply the role of these neurosteroids in the pathophysiology and management of schizophrenia.     

Evidence for cortical hyperexcitability of the affected limb representation area in CRPS: a psychophysical and transcranial magnetic stimulation study

Functional alterations in noxious, sensory and motor circuits within the central nervous system may play an important role in the pathophysiology of complex regional pain syndrome (CRPS). The aim of the present study was to search for further evidence of hyperexcitability in the hemisphere contralateral to the affected limb in patients with CRPS by employing both psychophysical and transcranial magnetic stimulation (TMS) methods. Twelve patients with CRPS type I, confined to the distal part of a limb (six in an upper-limb and six in a lower-limb), were enrolled in the study. The quantitative thermal, mechanical and 'wind-up' like pain testing was performed at the most painful site in the affected limb and in the ipsilateral limb. Results were then compared to those found at mirror sites in the contralateral limbs. TMS was used to assess the inter-hemispheric difference in parameters of corticospinal excitability, intracortical inhibition, and intracortical facilitation. The quantitative thermal and mechanical testing showed significant differences in cold, heat and mechanical pain thresholds, as well as in the first and last 'wind-up' stimuli between the affected and the contralateral limbs of the CRPS patients. No significant differences between the ipsilateral unaffected limbs and their contralateral pair limbs were found. A significant reduction in the short intracortical inhibition associated with a significant increase of the I-wave facilitation was found in the hemisphere contralateral to the affected side in the upper-limb CRPS group. No significant inter-hemispheric asymmetry between the affected and the non-affected sides was revealed in the lower-limb CRPS group. Taken together, these results suggest that in patients with well-localized CRPS, there is evidence for sensory and motor CNS hyperexcitability, though it seems to involve only corresponding regions within the CNS rather than the entire hemisphere.