OBJECTIVE: Peripheral neuropathy is characterized by hyperalgesia, spontaneous burning pain, and allodynia. The purpose of this study was to investigate the effect of rolipram, a phosphodiesterase-4-specific inhibitor, in a segmental spinal nerve ligation model in rats. METHODS: Both the L5 and L6 spinal nerves of the left side of the rats were ligated. Phosphodiesterase-4 inhibitor (rolipram) and saline (vehicle) were administered intraperitoneally. We measured mechanical allodynia using von Frey filaments and a nerve conduction study. RESULTS: The mechanical allodynia, which began to manifest on the first day, peaked within 2 days. Multiple intraperitoneal injections of rolipram ameliorated the mechanical allodynia. Furthermore, an intraperitoneal administration of rolipram improved the development of pain behavior and nerve conduction velocity. CONCLUSION: This study suggests that the phosphodiesterase-4 inhibitor, rolipram, alleviates mechanical allodynia induced by segmental spinal nerve ligation in rats. This finding may have clinical implications.
Animals ; Burns ; Cyclic Nucleotide Phosphodiesterases, Type 4 ; Hyperalgesia ; Injections, Intraperitoneal ; Ligation ; Neural Conduction ; Peripheral Nerve Injuries ; Peripheral Nervous System Diseases ; Rats ; Rolipram ; Spinal Nerves

PURPOSE: The objective of this study is to evaluate the effects of heat and massage application on autonomic nervous system. MATERIALS AND METHODS: One hundred thirty-nine subjects volunteered and completed this study. Heat and massage was daily applied for 40 minutes, 5 days a week for 2 weeks. Primary-dependent measures included heart rate variability, sympathetic skin response, and serum cortisol and norepinephrine levels. RESULTS: Serum cortisol levels were significantly decreased at 2 weeks compared to baseline (p=0.003). Plasma norepinephrine levels at 4 weeks were significantly decreased compared to baseline (p=0.010). Heart rate, using the power spectra, increased significantly after 2 weeks compared to baseline. Of autonomic nerve conduction measures, latency was significantly increased at 2 and 4 weeks compared to baseline (p=0.023, 0.012), and amplitude was significantly decreased at 4 weeks compared to baseline (p=0.008). There were no serious adverse events such as burns or other major complications. CONCLUSION: The results of this study suggest that heat and massage applications provide relaxation to the autonomic nervous system without serious adverse events.
Autonomic Nervous System/*physiopathology ; Female ; Heart Rate/*physiology ; Hot Temperature/adverse effects/*therapeutic use ; Humans ; Hydrocortisone/blood ; Male ; Massage/adverse effects/*methods ; Norepinephrine/blood

OBJECTIVE: Alcoholic neuropathy is characterized by allodynia (a discomfort evoked by normally innocuous stimuli), hyperalgesia (an exaggerated pain in response to painful stimuli) and spontaneous burning pain. The aim of the present study is to investigate the effect of rolipram, a phosphodiesterase 4 inhibitor, against alcohol-induced neuropathy in rats. METHODS: Allodynia was induced by administering 35% v/v ethanol (10 g/kg; oral gavage) to Spraue-Dawley rats for 8 weeks. Rolipram and saline (vehicle) were administered intraperitoneally. Mechanical allodynia was measured by using von Frey filaments. Somatosensory evoked potential (SEP) was proposed as complementary measure to assess the integrity of nerve pathway. RESULTS: The ethanol-induced mechanical allodynia began to manifest from 3 week, and then peaked within 1 week. Beginning from 3 week, latency significantly started to increased in control group. In rolipram treated rats, the shorter latency was sustained until 8 weeks (p<0.05). The mechanical allodynia, which began to manifest on the 3 weeks, intraperitoneal injections of rolipram sustained statistical difference until 8 weeks, the final week of the study (p<0.05). CONCLUSION: This study suggests that rolipram might alleviate mechanical allodynia induced by alcohol in rats, which clearly has clinical implication.
Alcoholic Neuropathy ; Alcoholics ; Animals ; Burns ; Cyclic Nucleotide Phosphodiesterases, Type 4 ; Ethanol ; Evoked Potentials, Somatosensory ; Humans ; Hyperalgesia ; Injections, Intraperitoneal ; Rats ; Rolipram

OBJECTIVE: After spinal cord injury (SCI), functional and structural reorganization occurs at multiple levels of brain including motor cortex. However, the underlying mechanism still remains unclear. The current study was performed to investigate the alterations in the expression of the main regulators of neuronal development, survival and death, in the brain following thoracic contusive SCI in a mouse model. METHODS: Eight-week-old female imprinting control region mice (n=60; 30-35 g) were used in this study. We analyzed the expression levels of regulators such as brain-derived neurotrophic factor (BDNF), glial cell line-derived neurotrophic factor (GDNF), nerve growth factor (NGF) and histone deacetylase (HDAC) 1 in the brain following thoracic contusive SCI. RESULTS: The expression of BDNF levels were elevated significantly compared with control group at 2 weeks after injury (p<0.05). The expression of NGF levels were elevated at 2, 4 weeks compared with control group, but these difference were not significant (p>0.05). The GDNF levels were elevated at 2 week compared with control group, but these differences were not significant (p>0.05). The difference of HDAC1 levels were not significant at 2, 4 and 8 weeks compared with control group (p>0.05). CONCLUSION: These results demonstrate that the upregulation of BDNF may play on important role in brain reorganization after SCI.
Animals ; Brain ; Brain-Derived Neurotrophic Factor ; Epigenomics ; Female ; Glial Cell Line-Derived Neurotrophic Factor ; Histone Deacetylases ; Humans ; Mice ; Motor Cortex ; Nerve Growth Factor ; Neurons ; Spinal Cord ; Spinal Cord Injuries ; Up-Regulation

OBJECTIVE: The object of this study was to evaluate the indications, effectiveness and complications associated with arterial embolization as a safe and effective alternative treatment of obstetrical hemorrhage. METHODS: From September 1998 to October 2005, 42 patients who had a pregnancy related hemorrhage which did not respond to treatment using obstetric maneuvers and uterotonic drugs were included in our study. The patients underwent angiographic embolization for the management of intractable obstetrical hemorrhage at Department of Obstetrics and Gynecology, Yonsei University Medical Center. All available medical records and telephone interviews were reviewed and detailed to collect adequate clinical data such as clinical status, underlying conditions, amount of transfusion, embolization sites, materials of embolization, hospital stay, the success rate and the complications. RESULTS: We have experienced clinically successful embolization in 40 (95.2%) of 42 patients of obstetrical hemorrhage resulting from various causes. After embolization, the patient's vital sign was stabilized. The causes of hemorrhage were atony of uterus (n=17), cervical pregnancy (n=5), abnormal placentation (n=5), laceration of uterine cervix and vagina (n=6). The average amount of blood transfusion was 10.3 unit (range; 0-63 unit). The average duration of hospitalization was 7.4 days (range; 4-18 days). We were able to follow up on 32 patients. The main complications after embolization were hypomenorrhea (n=6), numbness of lower extremities (n=3). In all cases menses resumed spontaneously after procedures. CONCLUSION: The arterial embolization is one of the safe and the effective procedures and offers patients a fertility-preserving alternative to hysterectomy for treatment of intractable postpartum hemorrhage.
Academic Medical Centers ; Blood Transfusion ; Cervix Uteri ; Female ; Follow-Up Studies ; Gynecology ; Hemorrhage* ; Hospitalization ; Humans ; Hypesthesia ; Hysterectomy ; Interviews as Topic ; Lacerations ; Length of Stay ; Lower Extremity ; Medical Records ; Menstruation Disturbances ; Obstetrics ; Placentation ; Postpartum Hemorrhage ; Pregnancy ; Uterus ; Vagina ; Vital Signs