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"Tujuan: Mendapatkan alat (Mikrokapiler Digital/MD) untuk mengukur viskositas darah dan plasma yang mempunyai presisi dan akurasi yang baik. Mengetahui peran viskositas darah dan plasma yang diukur dengan MD, faktor risiko dan determinan terhadap prognosis stroke iskemik akut berdasarkan National Institute of Health Stroke Scale (NIHSS), Modified Rankin Score (mRS), Interleukin 6 (IL-6), dan neuron-specific enolase (NSE). Penelitian tahap pertama meliputi uji presisi dan akurasi, sedangkan tahap kedua adalah uji prognosis. Subjek penelitian: Subjek untuk uji presisi adalah 40 dewasa sehat yang melakukan Medical Check Up (MCU). Subjek untuk uji akurasi dan prognosis adalah 135 pasien stroke iskemik akut onset ≤ 3 hari, usia 35 – 74 tahun. Pengukuran dan intervensi: Presisi dinilai dengan coefficient of variation (CV), interrater variability Cronbach Alpha dan coefficient of reliability Bland Altman. Akurasi dinilai dengan uji diagnostik. Uji prognosis meliputi analisis bivariat dilanjutkan dengan analisis multivariat cox proportional hazards regression. Hasil: Dari penelitian tahap pertama, didapatkan CV sebesar 0,04, nilai interrater variability Cronbach Alpha dan mean difference Bland Altman adalah baik. Sensitivitas dan spesifisitas MD untuk viskositas darah adalah 88,9 % dan 88,9 %, sedangkan untuk viskositas plasma adalah 100 % dan 84 %. Rumus prediksi untuk konversi viskositas darah MD ke satuan poise adalah y = 0,846x + 0,614, dan untuk viskositas plasma adalah y = 1,072x + (-0,160). Pada uji tahap kedua, didapatkan faktor determinan antara lain: fibrinogen merupakan faktor determinan perubahan viskositas darah dan plasma; viskositas darah merupakan faktor determinan perburukan kondisi klinis (National Institute of Health Stroke Scale/NIHSS dan modified Rankin Scale/mRS); viskositas darah dan diabetes melitus (DM) merupakan faktor determinan prognosis stroke iskemik akut berdasarkan interleukin 6 (IL-6); dan HDL merupakan faktor determinan prognosis stroke iskemik akut berdasarkan neuron specific enolase (NSE). Simpulan: MD memiliki presisi dan akurasi yang baik. Viskositas darah merupakan faktor determinan perburukan kondisi klinis baik akut maupun pasca perawatan.

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Objectives: To design a simple and portable instrument (Digital Microcapillary) for measuring blood and plasma viscosity values with high precision and accuracy. To assess the roles of these values, the risk and determining factors in predicting the outcome of acute ischemic stroke assessed using National Institute of Health Stroke Scale (NIHSS), modified Rankin Scale (mRS), interleukin 6 (IL-6), and neuron specific enolase (NSE). The first stage of this study included precision and accuracy tests, while the second stade was the prognostic test.

Research subjects: 40 healthy adults admitted for Medical Check Up (MCU) were recruited for the precision test while the subjects for accuracy and prognostic tests were 135 acute ischemic stroke patients, either inpatients or outpatients, aged 35 - 74 years old, with up to 3 days stroke onset.

Measurement and intervention: The precision was assessed by calculating coefficient of variation (CV), Cronbach Alpha interrater variability, and Bland Altman coefficient of reliability, while the accuracy was assessed using diagnostic test. The prognostic test included bi- and multivariate analyses using Cox proportional hazards regression.

Results: The results of the first stage study were that the CV was 0.04; Cronbach Alpha interrater variability and Bland Altman mean difference values were excellent. The prediction formula used to convert blood viscosity value measured with digital microcapillary to poise unit was y = 0.846x + 0.614, and the formula for plasma viscosity was y = 1.072x + (-0.160). The sensitivity and specificity of Digital Microcapillary for blood viscosity measurement were 88.9 % and 88.9 %, respectively and for plasma viscosity measurement were 100 % and 84 %, respectively. The second stage of the study showed that the variables proven to be the determinants were: fibrinogen as the determinant of blood and plasma viscosity, blood viscosity as the determinant of clinical outcome (NIHSS and mRS), blood viscosity and diabetes mellitus as the determinants of acute ischemic stroke outcome indicated by blood IL-6 level, and HDL as the determinant of acute ischemic stroke outcome indicated by NSE level.

Conclusions: Digital Microcapillary has high precision and accuracy. Blood viscosity is a determining factor in the ischemic stroke outcome, both acute and one month after hospital discharge."

"Latar Belakang : Acalypha indica Linn. merupaksn tanaman yang mudah didapat tumbuh .Sepanjang tahun dan bisa ditemukan di kebun, halaman rumah maupun tempat-tempat pembuangan sampah. Semua bagian dari tanaman ini bisa digunakan dalam pengobatan trndisiooal untllk menangani berbagai masalah kesehatan. Pada penelitian sebelumnya didapatkan data bahwa ekstrak Acalypha indica Linn. terhukti memiliki efek. Sebagai neuroproteksi dan neuroterapi pada neuromuscular junction jaringan kstak dan mampu menghambat efek neurotoksik pada jaringan kalak. Oleh karena itu, ekstrak air akar Acalypha indica Linn. bisa mempengaruhi perbaikan neuron hipokampus pascahipoksia serebri. Tujuan : untllk menganalisa kerusakan sel neuron hipokampus pascahipoksia setelah pemberian ekstrak air akar Acalypha indica Linn. Metode penelitian : 30 ekor tikss Sprague Dawley tetbagi secara acak dalarn enam kelompok. Kelompok hlpoksia, tikss dimasukkan ke dalam sungkup hipoksia yang mengandung gas campuran (02 10% dan nitrogen 90 %) selama tujuh hari, untuk kelompok reoksigenasi tikss dibiarken mengbirup udara bebas. Setelah perlakuan hipoksia. Tiga kelompok terapi lainnya, setelab perlakuan hipoksia tikss kemndian dilanjutkan dengan pemberian ekstrak air akar Acalypha indica Linn pada dosis 300, 400 dan 500 mglkg BB selama tujuh hari. Kriteria penilaian yang digunakan dalam studi ini adalah jumlah sel rusak neuron hipokampus den gao mengamati : bentuk sel, ada tidaknya kodensasi kromatin, piksotik dan rasio sitoplasma dengan inti setelah pewaraan hemaktosilin eosin. Hasil : ekstrak air akar Acalypha indica Linn. pada dosis 400 dan 500 mg/kg BB secara signitikan mampu memperbaiki kerusakan sel neuron ( efek neuroterapi) hipokampus pascabipoksia serebral (p = 0,0 I). Kesimpulan : ekstrak air akar Acalypha indica Linn memiliki efek neuroterapi pada dosis 400 dan 500 mglkg BB.

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Background : Acalypha indica Linn is a common herb which can easily be found elsewhere in Indonesia, All the parts of plants are used in various traditional therapy for some diseases. Previous studies showed that Acalypha indica Linn extracts have neuro-protective and neuro-therapy effects on neuromuscular junction and inhibit neurotoxin on isolated frog tissues. Thus, administration of aqueous extracts of Acalyjpha. indica Linn root was assumed to improve hippocampus neuron injury after cerebral hypoxia.

Objective : To investigate the effects of aqueous extracts of Acalypha indica Linn root on hippocampus neuron injury after cerebral hypoxia in the rat.

Methods : Thirty male Sprague Dawley with 200-250 gr Body weight of rats were divided into six groups randomly. The rats were housed in hypoxic chamber containing gas mixture of I0 % O2 and 90 % N2 for seven days, followed by administration of 300, 400 and 500 mg/kg BW aqueous extracts of A. indica Linn root for seven days.. The other group was exposed to room air after hypoxia. The parameters measured were hippocampal cell damage ie : the quantity and type of hippocampal cell, chromatin condensation, pycnotic and cytoplasm nucleus ratio using hematoxyline eosin staining.

Result : The aqueous extracts of A. indica Linn root of 400 and 500 mg/kg BW improve hippocampus neuron injury (neurothcrapy effect) alter cerebral hypoxia significantly (p = 0,0l).

Conclusion : The aqueous extracts of A. indica Linn roots have neurotherapy effects on hippocampal neuron after cerebral hypoxia of 400 and 500 mg/kg BB."

"This book will provide a basic reference for students, clinicians, and researchers on how synapses in the auditory system function to encode acoustic signals. These mechanisms are the groundwork for all auditory processing, and understanding them requires knowledge of the microphysiology of synapses, cellular biophysics, receptor pharmacology, and an appreciation for what these synapses must do for a living, what unique jobs they carry out."

"Neuronal noise combines experimental, theoretical and computational results to show how noise is inherent to neuronal activity, and how noise can be important for neuronal computations. The book covers many aspects of noise in neurons, with an emphasis on the largest source of noise : synaptic noise. It also provides the specialist with a summary of the large body of sometimes contrasting experimental data, and different theories proposed to explore the computational power that various forms of "noise" can confer to neurons."

"This monograph is centered on quantitative analysis of nerve-cell behavior. The work is foundational, with many higher order problems still remaining, especially in connection with neural networks. Thoroughly addressed topics include stochastic problems in neurobiology, and the treatment of the theory of related Markov processes."